WO2013001819A1 - 可溶性インテグリンα4変異体 - Google Patents
可溶性インテグリンα4変異体 Download PDFInfo
- Publication number
- WO2013001819A1 WO2013001819A1 PCT/JP2012/004191 JP2012004191W WO2013001819A1 WO 2013001819 A1 WO2013001819 A1 WO 2013001819A1 JP 2012004191 W JP2012004191 W JP 2012004191W WO 2013001819 A1 WO2013001819 A1 WO 2013001819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- integrin
- itg
- ligand
- mutant
- seq
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/70546—Integrin superfamily
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0007—Nervous system antigens; Prions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/18—Antivirals for RNA viruses for HIV
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/71—Receptors; Cell surface antigens; Cell surface determinants for growth factors; for growth regulators
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2839—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the integrin superfamily
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/555—Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
- A61K2039/55511—Organic adjuvants
- A61K2039/55566—Emulsions, e.g. Freund's adjuvant, MF59
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/60—Medicinal preparations containing antigens or antibodies characteristics by the carrier linked to the antigen
- A61K2039/6031—Proteins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
Definitions
- the present invention relates to the field of treatment or prevention of diseases involving integrin ⁇ 4 and integrin ⁇ 9. More specifically, the present invention relates to a method for treating or preventing a disease involving integrin ⁇ 4 and integrin ⁇ 9 using a soluble integrin ⁇ 4 mutant.
- Integrin is a transmembrane receptor protein in which ⁇ chain and ⁇ chain form a heterodimer of 1: 1.
- Integrin ⁇ 4 (hereinafter referred to as “ITG- ⁇ 4”) is expressed mainly on lymphocytes and tumor cells, and is a vascular cell adhesion molecule 1 (VCAM1), fibronectin (Fn), junction adhesion molecule 2 (JAM2), mucosal addressin Cell adhesion molecule 1 (MAdCAM1), human lymphocyte-expressing metal proteinase-like disintegrin-like cysteine protein family member (MDC-L; disintegrin and metalloprotease 28 (ADAM28)), von Willebrand factor (pp-vWF) and osteopontin ( It is known to adhere to a ligand such as OPN (Non-Patent Document 1, Non-Patent Document 2).
- VCAM1 vascular cell adhesion molecule 1
- Fn fibronectin
- JAM2 junction adhesion molecule 2
- ITG- ⁇ 4 binds to these ligands and is thought to exert various functions such as cell adhesion, migration (eg, migration of lymphocytes, monocytes, eosinophils to inflammatory sites), lymphocyte homing, etc. ing.
- Non-patent Document 3 cancer metastasis
- Patent Document 1 multiple myeloma
- Patent Document 2 rheumatoid arthritis
- bronchitis inflammatory bowel disease
- Crohn's disease multiple sclerosis and other inflammatory diseases
- Non-patent document 4 acute central nervous system injury
- patent document 2 acute central nervous system injury
- HIV HIV
- anti-ITG- ⁇ 4 antibody is effective in suppressing skin sclerosis and fibrin deposition in allergic pneumonia, immune complex-mediated lung injury, acute nephrotoxic nephritis, and delayed hypersensitivity. It is known to suppress allograft rejection (Non-patent Document 1).
- ITG- ⁇ 4 inhibitors are expected to be used as pharmaceuticals.
- anti-ITG- ⁇ 4 antibodies, ITG- ⁇ 4 antagonists (Patent Document 4, etc.), ITG- ⁇ 4 receptor antagonists (Patent Document 5, etc.) have been studied as substances that inhibit the function of ITG- ⁇ 4.
- Tysabri an ITG- ⁇ 4 antibody, has already been approved as a therapeutic agent for multiple sclerosis and Crohn's disease.
- a therapeutic method that targets a functional motif in the cytoplasmic domain of ITG- ⁇ 4 (Patent Document 6) has been reported.
- Non-Patent Document 1 Non-Patent Document 2
- the binding site of Fn and the binding site of VCAM1 overlap each other in ITG- ⁇ 4
- the binding of ITG- ⁇ 4 and VCAM1 requires the help of calcium ions.
- Non-patent Document 1 Non-patent Document 1
- ITG- ⁇ 9 integrin ⁇ 9
- EAE experimental autoimmune encephalomyelitis
- Non-patent Document 5 The present inventors have previously produced an antibody against ITG- ⁇ 9 and found a therapeutic effect on rheumatoid arthritis (Non-patent Document 6 and Patent Document 7).
- ITG- ⁇ 9 is considered to have a function similar to ITG- ⁇ 4 because it has a common ligand with ITG- ⁇ 4.
- the ITG- ⁇ 9 amino acid sequence has 39% homology with the amino acid sequence of ITG- ⁇ 4, and is known to have the highest homology among ITG (Non-patent Document 7).
- SF ⁇ 9 an ⁇ 9 variant
- SF ⁇ 9 an alternative splicing variant composed only of a part of the extracellular region of ITG- ⁇ 9 and a new C-terminal amino acid
- ITG- ⁇ 4 and ITG- ⁇ 9 have a common ligand and are considered to be involved in the development of similar diseases such as EAE, substances that can simultaneously inhibit ITG- ⁇ 4 and ITG- ⁇ 9 are ITG- ⁇ 4 and It is expected to be an effective therapeutic agent for diseases involving ITG- ⁇ 9.
- Cancer cells such as melanoma are known to express both ITG- ⁇ 4 and ITG- ⁇ 9 (J Cell Physiol. (2007) 212: 368-74 .; Exp Cell Res. (2009). ) 315: 3312-24.). It is known that cancer metastasis involves steps of rolling, adhesion, and extravasation within blood vessels, and it is considered that ITG plays an important function during this adhesion.
- the present inventors tried to identify a novel alternative splicing variant of ITG- ⁇ 4 in order to search for an effective inhibitor of ITG- ⁇ 4. As a result, six new alternative splicing variants were successfully identified (FIGS. 1-3 and SEQ ID NOs: 4-9). As a result of analyzing the structure of the obtained alternative splicing variant of ITG- ⁇ 4, the present inventors surprisingly found that 5 out of 6 alternative splicing variants are human ITG- ⁇ 4 (SEQ ID NO: 10) on the C-terminal side. It had a novel and unique intron-derived amino acid sequence that was not derived (the new amino acid sequence on the C-terminal side of each ITG- ⁇ 4 alternative splicing variant is shown in FIG. 3).
- the present inventors have found that these alternative splicing variants can inhibit the binding of ITG- ⁇ 4 to a plurality of different ligands. Furthermore, the present inventors have found that the obtained ITG- ⁇ 4 alternative splicing variant not only inhibits the binding between ITG- ⁇ 4 and its ligand, but also inhibits the binding between ITG- ⁇ 9 and its ligand. It was.
- an object of the present invention is to provide a novel substance capable of inhibiting various functions of ITG- ⁇ 4 and / or to provide a novel substance capable of inhibiting both ITG- ⁇ 4 and ITG- ⁇ 9. To do.
- the present invention is based on the discovery of a novel alternative splicing variant of ITG- ⁇ 4. Specifically, the present invention relates to the inventions described in the following (1) to (15). (1) An integrin ⁇ 4 mutant having a part of the extracellular region of human integrin ⁇ 4 (SEQ ID NO: 10).
- the peptide according to (1), wherein the extracellular region of human integrin ⁇ 4 (SEQ ID NO: 10) is one sequence selected from SEQ ID NO: 9 and SEQ ID NOs: 11-14.
- one sequence selected from SEQ ID NOs: 15 to 19 is bound to the C terminus of the extracellular region of human integrin ⁇ 4 (SEQ ID NO: 10) (1) to (3) The peptide of any one of these.
- the peptide according to (10), wherein the ligand for integrin ⁇ 9 is pp-vWF or OPN.
- the peptide according to (10), wherein the ligand of integrin ⁇ 9 is a peptide having the amino acid sequence of SEQ ID NO: 20 or 21.
- a pharmaceutical composition comprising the peptide according to any one of (1) to (14) as an active ingredient.
- integratedin ⁇ 4 mutant and “ITG- ⁇ 4 mutant” have the same meaning, and are alternative splicing of ITG- ⁇ 4 derived from the ITG- ⁇ 4 genome and produced by splicing different from ITG- ⁇ 4. It means a variant peptide or a peptide having substantially the same amino acid sequence as the peptide.
- the “integrin ⁇ 4 variant” in the present specification has a part of the extracellular region of human ITG- ⁇ 4 (part consisting of amino acid sequences 1 to 977 of SEQ ID NO: 10), a transmembrane region and an intracellular region. Is not included.
- a signal sequence (part consisting of the first to 33rd amino acid sequence in SEQ ID NO: 10), ⁇ -propeller (part consisting of the 34th to 465th amino acid sequence in SEQ ID NO: 10) , High (part consisting of 466th to 618th amino acid sequence in SEQ ID NO: 10), Genu (part consisting of 619th to 626th amino acid sequence in SEQ ID NO: 10), Calf1 (627th to 770th in SEQ ID NO: 10) And a domain called Calf2 (part consisting of amino acid sequences 771 to 977 in SEQ ID NO: 10).
- a part of the extracellular region of human ITG- ⁇ 4 in the present invention is preferably a ⁇ -propeller domain and / or a High domain.
- a part of the extracellular region of human ITG- ⁇ 4 in the present specification has an amino acid sequence derived from the ⁇ -propeller domain of human ITG- ⁇ 4.
- the amino acid sequence derived from the ⁇ -propeller domain may be the sequence of any site as long as it is a part of the amino acid sequence constituting the ⁇ -propeller domain located at the N-terminus of ITG- ⁇ 4.
- a part of the extracellular region of human ITG- ⁇ 4 is, for example, an amino acid constituting a ⁇ -propeller domain (consisting of 432 amino acids) of 50 amino acids or more, 100 amino acids or more, 150 amino acids or more, 180 amino acids or more, or 185 amino acids or more It can have an amino acid sequence derived from the sequence.
- the amino acid sequence derived from the ⁇ -propeller domain of human ITG- ⁇ 4 preferably contains the 34th amino acid sequence in SEQ ID NO: 10.
- a part of the extracellular region of human ITG- ⁇ 4 having an amino acid sequence derived from ⁇ -propeller domain of human ITG- ⁇ 4 may consist of only an amino acid sequence derived from ⁇ -propeller domain, or ⁇ -propeller.
- amino acid sequence derived from the domain may have an amino acid sequence derived from the extracellular region of human ITG- ⁇ 4 other than the ⁇ -propeller domain. More specifically, a part of the extracellular region of human ITG- ⁇ 4 in the present specification is the amino acid sequence shown in SEQ ID NOs: 11 to 14 (or from the amino acid sequence of 1st to 33rd in the amino acid sequence).
- Amino acid sequence lacking a signal sequence or 1st to 185th, 1st to 384th, 1st to 513th, or 1st to 640th of SEQ ID NO: 10 (or 34th to 185th, 34th of SEQ ID NO: 10) 384th, 34th to 513th, or 34th to 640th amino acids).
- the “integrin ⁇ 4 variant” can have an amino acid sequence not derived from ITG- ⁇ 4 (hereinafter referred to as “ITG- ⁇ 4 variant-specific amino acid sequence”).
- the “ITG- ⁇ 4 variant-specific amino acid sequence” is a sequence derived from an intron of ITG- ⁇ 4.
- the ITG- ⁇ 4 variant-specific amino acid sequence in the present specification is SEQ ID NO: 15- The amino acid sequence described in 19 may be used.
- the “integrin ⁇ 4 variant” in the present specification consists of only a part of the extracellular region of human ITG- ⁇ 4 or a part of the extracellular region of human ITG- ⁇ 4. It includes peptides consisting of ITG- ⁇ 4 variant-specific amino acid sequences (hereinafter collectively referred to as “alternative splicing variants of ITG- ⁇ 4”).
- the ITG- ⁇ 4 mutants in the present specification are SEQ ID NOS: 4 to 9 (in order, “1-2-1 mutant” (SEQ ID NO: 4) and “1-1-2 mutant”, respectively) SEQ ID NO: 5), “7-3-2 mutant” (SEQ ID NO: 6), “10-7-3 mutant” (SEQ ID NO: 7), “10-7-2 mutant” (SEQ ID NO: 8), And a peptide comprising the amino acid sequence described in “9-5-4 variant” (SEQ ID NO: 9).
- the alternative splicing variant of ITG- ⁇ 4 in the present specification binds to a ligand of ITG- ⁇ 4 and / or inhibits the binding between ITG- ⁇ 4 and its ligand, and / or ITG- ⁇ 9. It has an activity of binding to a ligand and / or inhibiting the binding of ITG- ⁇ 9 to the ligand.
- the “integrin ⁇ 4 mutant having a part of the extracellular region of human integrin ⁇ 4” in the present specification includes a peptide substantially the same as the alternative splicing variant of ITG- ⁇ 4.
- the substantially identical peptide is encoded by the alternative splicing variant of ITG- ⁇ 4, which is highly homologous in amino acid sequence, and is hybridized with DNA encoding the peptide under stringent conditions, And / or a peptide in which a small number of amino acid residues are substituted, deleted, added, and / or inserted, and has biological activity equivalent to that of the alternative splicing variant of ITG- ⁇ 4 herein.
- amino acid sequence having high homology means an amino acid sequence having 80%, 85%, 90%, 95%, 98%, or 99% homology with the alternative splicing variant of ITG- ⁇ 4. It means having.
- a peptide having high homology in amino acid sequence with the alternative splicing variant of ITG- ⁇ 4 is 80%, 85%, 90%, 95%, 98% with any one of the amino acid sequences of SEQ ID NOs: 4-9.
- it may have an amino acid sequence having 99% homology.
- the homology of amino acid sequences can be determined by a method commonly used by those skilled in the art using known programs such as BLAST and FASTA.
- the term "encoded by DNA that hybridizes under stringent conditions with DNA encoding the alternative splicing variant of ITG- ⁇ 4" means that DNA encoding the alternative splicing variant of ITG- ⁇ 4 is commonly used by those skilled in the art. It means to hybridize under the hybridization conditions to be determined.
- DNA that hybridizes under stringent conditions with DNA encoding an alternative splicing variant of ITG- ⁇ 4 hybridizes under stringent conditions with DNA encoding any one of the amino acid sequences of SEQ ID NOs: 4-9. It may be a peptide encoded by soybean DNA.
- stringent hybridization conditions are 6 ⁇ SSC (0.9 M NaCl, 0.09 M trisodium citrate) or 6 ⁇ SSPE (3 M NaCl, 0,2 M NaH 2 PO 4 , 20 mM EDTA ⁇ 2Na, pH 7 .4) may be hybridized at 42 ° C. and then washed at 42 ° C. with 0.5 ⁇ SSC.
- a peptide in which a few amino acid residues are substituted, deleted, added, and / or inserted into the alternative splicing variant of ITG- ⁇ 4 is one of the amino acid sequences constituting the alternative splicing variant of ITG- ⁇ 4.
- a peptide in which a small number of amino acid residues are substituted, deleted, added, and / or inserted into the alternative splicing variant of ITG- ⁇ 4 a peptide comprising any one of the amino acid sequences of SEQ ID NOs: 4 to 9 And peptides in which a small number of amino acid residues are substituted, deleted, added, and / or inserted.
- the number of amino acids to be substituted, deleted, added, and / or inserted is not particularly limited as long as it does not affect the biological activity of the alternative splicing variant of ITG- ⁇ 4. For example, 1-10 It can be 1 to 5, 1 to 4, or 1 to 3.
- the peptide substantially identical to the alternative splicing variant of ITG- ⁇ 4 has a biological activity equivalent to that of the alternative splicing variant of ITG- ⁇ 4.
- the “biological activity equivalent to the alternative splicing variant of ITG- ⁇ 4” means an activity that binds to the ligand of ITG- ⁇ 4 and / or inhibits the binding of integrin ⁇ 4 to the ligand.
- the ITG- ⁇ 4 ligand is not particularly limited as long as it is a protein or peptide already known as an ITG- ⁇ 4 ligand, but preferably VCAM1, Fn (particularly, fibronectin EIIIA (Fn-EIIIA)).
- ligand in the case of binding to the ligand of ITG- ⁇ 4 and / or inhibiting the binding of integrin ⁇ 4 to the ligand does not have to be all of these ligands. It may bind to a ligand and / or inhibit the binding of integrin ⁇ 4 to some of the aforementioned ligands.
- the two or more ligands are preferably Fn-EIIIA, pp-vWF and OPN More preferably, a peptide having the amino acid sequence of SEQ ID NO: 20 and a peptide having the amino acid sequence of SEQ ID NO: 21 are included.
- the “biological activity equivalent to the alternative splicing variant of ITG- ⁇ 4” is in addition to the activity of binding to a ligand of ITG- ⁇ 4 and / or inhibiting the binding of ITG- ⁇ 4 to the ligand. , Or an activity that binds to a ligand of ITG- ⁇ 9 and / or inhibits the binding of ITG- ⁇ 9 to the ligand.
- the ITG- ⁇ 9 ligand is not particularly limited as long as it is a protein or peptide already known as an ITG- ⁇ 9 ligand, but preferably VCAM1, Fn (particularly, fibronectin EIIIA (Fn-EIIIA)).
- pp-vWF or OPN more preferably Fn-EIIIA, pp-vWF or OPN, and still more preferably a peptide having the amino acid sequence of SEQ ID NO: 20 or 21 is there.
- the type of ligand does not have to be all of these ligands. And / or may inhibit the binding of integrin ⁇ 9 to some of the aforementioned ligands.
- a peptide having the amino acid sequence of SEQ ID NO: 20 and a peptide having the amino acid sequence of SEQ ID NO: 21 are included.
- the activity to inhibit the binding between ITG- ⁇ 4 and its ligand, and the activity to inhibit the binding between ITG- ⁇ 9 and its ligand, respectively are the cells expressing ITG- ⁇ 4 and the ITG- ⁇ 4 ligand, respectively.
- Binding activity (cell adhesion of ITG- ⁇ 4 expressing cells to ITG- ⁇ 4 ligand) and binding of ITG- ⁇ 9 expressing cells to ITG- ⁇ 9 ligand (ITG- ⁇ 9 is expressed) It may be replaced with an activity that inhibits cell adhesion to the ITG- ⁇ 9 ligand).
- the ITG- ⁇ 4 mutant of the present invention binds to a ligand of ITG- ⁇ 4 and / or inhibits the binding between ITG- ⁇ 4 and its ligand, and / or a ligand of ITG- ⁇ 9. And / or has an activity of inhibiting the binding between ITG- ⁇ 9 and its ligand.
- the ITG- ⁇ 4 variant of the present invention binds to an ITG- ⁇ 4 ligand and / or inhibits the binding between ITG- ⁇ 4 and its ligand, and binds to an ITG- ⁇ 9 ligand. And / or has an activity of inhibiting the binding between ITG- ⁇ 9 and its ligand.
- the ITG- ⁇ 4 variant of the present invention binds to a common ligand to which both ITG- ⁇ 4 and ITG- ⁇ 9 bind, or a common ligand to which both ITG- ⁇ 4 and ITG- ⁇ 9 bind. And ITG- ⁇ 4 and ITG- ⁇ 9 binding to a common ligand to which both ITG- ⁇ 4 and ITG- ⁇ 9 bind.
- Common ligands to which both ITG- ⁇ 4 and ITG- ⁇ 9 bind include Fn-EIIIA, pp-vWF and OPN.
- the “biological activity equivalent to the alternative splicing variant of ITG- ⁇ 4” may include being soluble in addition to the above activities. Whether or not the peptide of interest is soluble is determined, for example, by recombining the DNA encoding the peptide modified with FLAG or the like into a host cell, culturing the cell, and then determining the presence of the peptide in the culture supernatant. It can be examined by confirming with an anti-FLAG antibody or the like. When the peptide is released in the culture supernatant, it can be determined that the peptide is soluble. In the present specification, “soluble” means that most (a majority) of the produced peptide is released into the culture solution without remaining in the cell or on the cell surface, and all the produced peptides are cultured. It does not need to be released into the liquid.
- biological activity equivalent to that of alternative splicing variant of ITG- ⁇ 4 means, in principle, a qualitative property and does not ask for its magnitude as long as it has the above-mentioned activity. However, it is preferably the same level as that of the alternative splicing variant of ITG- ⁇ 4 (preferably a peptide comprising the amino acid sequence set forth in SEQ ID NOs: 4 to 9) (for example, the activity value is ⁇ 25%, ⁇ 20%, ⁇ 15%) Or within a range of ⁇ 10%.
- the “integrin ⁇ 4 mutant” in the present specification amino acids constituting it may be appropriately chemically modified as necessary.
- the “integrin ⁇ 4 variant” in the present specification refers to a peptide that does not bind to the RGD sequence (SEQ ID NO: 1), and / or the RDG sequence (SEQ ID NO: 1) and ITG (particularly ITG- ⁇ 4 and / or ITG). It may be a peptide that does not inhibit the binding to - ⁇ 9).
- the present invention relates to an antibody that specifically recognizes an ITG- ⁇ 4 mutant.
- the antibody of the present invention may be a polyclonal antibody or a monoclonal antibody, but is preferably a monoclonal antibody.
- a “monoclonal antibody” is highly specific for an antigen and recognizes a single antigen.
- the antibody of the present invention includes non-human animal antibodies, antibodies having the amino acid sequences of non-human animal antibodies and human-derived antibodies, and human antibodies. Examples of antibodies from non-human animals include antibodies such as mice, rats, hamsters, guinea pigs, rabbits, dogs, monkeys, sheep, goats, chickens and ducks, and preferably hybridomas can be produced.
- Animal antibodies more preferably mouse antibodies.
- Examples of the antibody having the amino acid sequence of a non-human animal antibody and the amino acid sequence of a human-derived antibody include human chimeric antibodies and humanized antibodies.
- “chimeric antibody” is a non-human animal-derived antibody that specifically binds to an ITG- ⁇ 4 variant and has been genetically modified to have the same constant region as a human antibody. It is an antibody, and is preferably a human / mouse chimeric antibody (see European Patent Publication EP0125023).
- “Humanized antibody” refers to the primary structure of non-human animal-derived primary structures other than the complementary recognition regions (CDRs) of the H and L chains that specifically bind to the ITG- ⁇ 4 variant.
- CDR refers to Kabat et al. (“Sequences of Proteins of Immunological Interest”, Kabat, E. et al., US Department of Health Services and Human Services, 1983) or ChoC. Biol., 196: 901-917).
- Human antibody refers to a human antibody that is an expression product of a fully human-derived antibody gene. For example, a monoclonal antibody prepared using a transgenic animal into which a gene involved in human antibody production has been introduced. (See European Patent Publication No. EP0546073).
- the ITG- ⁇ 4 mutant of the present invention can inhibit various functions of ITG- ⁇ 4, it is possible to treat or prevent various diseases in which ITG- ⁇ 4 is involved in onset or exacerbation.
- the ITG- ⁇ 4 mutant of the present invention is capable of inhibiting the binding between ITG- ⁇ 4 and its ligand and in addition to inhibiting the binding between ITG- ⁇ 4 and its ligand, It is possible to treat or prevent various diseases in which ITG- ⁇ 4 and ITG- ⁇ 9 are involved in the onset or exacerbation.
- FIG. 3 is a view showing amino acid sequences of alternative splicing variants of ITG- ⁇ 4, the 1-2-1 mutant, the 1-1-2 mutant, the 7-3-2 mutant, and the 10-7-3 mutant. .
- FIG. 3 is a view showing amino acid sequences of 10-7-2 mutant and 9-5-4 mutant, which are alternative splicing variants of ITG- ⁇ 4.
- FIG. 3 is a schematic diagram of the sequence of an alternative splicing variant of ITG- ⁇ 4. It is a figure which shows the gene structure in chromosome 2 of the alternative splicing variant of ITG- ⁇ 4.
- the vertical axis indicates the absorbance at 450 nm of the labeled antibody, which is an index of the amount of integrin ⁇ 4 mutant bound to the ligand
- the horizontal axis indicates the alternative splicing variant of each ITG- ⁇ 4 used.
- the black graph shows the binding between each ITG- ⁇ 4 alternative splicing variant and human OPN RAA Nhalf protein
- the gray graph shows the binding between each ITG- ⁇ 4 alternative splicing variant and BSA.
- the result of analyzing the expression of the endogenous 1-2-1 mutant by Western blot is shown.
- the numerical value on the left indicates the molecular weight (kDa) of the protein.
- 1-2-1 / COS posi-con at the top of the photo indicates the culture supernatant of COS1 cells in which the 1-2-1 mutant is forcibly expressed.
- “Jurkat sup” indicates the culture supernatant of Jurkat cells.
- “Rec-1 sup” indicates the culture supernatant of Rec-1 cells.
- the results of measurement of the cell adhesion inhibitory function through integrin ⁇ 4 and integrin ⁇ 9 of the 1-2-1 mutant are shown.
- the vertical axis shows the absorbance at 595 nm, which is an index of the number of cells bound to the ligand, and the horizontal axis shows each ligand used.
- M ⁇ 4 / CHO means that CHO cells expressing mouse integrin ⁇ 4 integrin were used, and “m ⁇ 9 / CHO” means that CHO cells expressing mouse integrin integrin ⁇ 9 were used.
- the white line indicates that the 1-2-1 mutant is not added (-)
- the black indicates that the 1-2-1 mutant is added with 6.25 ⁇ g / mL
- the dot indicates that 12.5 ⁇ g / mL is added
- the hatched line indicates 25 ⁇ g. / ML means addition.
- the vertical axis represents the EAE score
- the horizontal axis represents the number of days elapsed after administration of the 1-2-1 mutant.
- the ITG- ⁇ 4 mutant of the present invention can be obtained by referring to the description of the present specification while employing a method well known to those skilled in the art with reference to the structure (FIG. 3) and sequence (SEQ ID NO: 10) of ITG- ⁇ 4. be able to.
- the ITG- ⁇ 4 mutant can be obtained by performing 3′-lace method using cDNA of cells known to express ITG- ⁇ 4 (eg, T cells such as Jurkat cells, Rec-1 cells, etc.). Can be obtained.
- ITG- ⁇ 4 has been reported to be expressed in the intestine, T cells, IgA-producing B cells, (mononuclear) leukocytes, and the like.
- RNA from cells known to express ITG- ⁇ 4 is extracted using a QIAGEN RNeasy kit (QIAGEN).
- CDNA synthesis for 3′-lace from total RNA can be performed using a Firststrand cDNA synthesis kit (Roche).
- 3′-lace cDNA is synthesized using a 3′-lace primer QT primer (eg, SEQ ID NO: 22) as a primer used for reverse transcription.
- Q0 primer for example, SEQ ID NO: 23
- primers for various regions of ITG- ⁇ 4 shown below for example, in the case of human ITG- ⁇ 4, SEQ ID NO: 24, SEQ ID NO: 25, SEQ ID NO: 26) Etc.
- the obtained PCR product was diluted 20 times, and 1 ⁇ L of the diluted product was used as a template, and Q1 primer (for example, SEQ ID NO: 27) and ITG- ⁇ 4 primer (for example, in the case of human ITG- ⁇ 4, SEQ ID NO: 25, 2nd PCR is performed using SEQ ID NO: 26, SEQ ID NO: 28, etc.
- the resulting band is purified by gel extraction and cloned to obtain an ITG- ⁇ 4 mutant.
- the ITG- ⁇ 4 mutant of the present invention is a 1-2-1 mutant, 1-1-2 mutant, 7-3-2 mutant, 10-7-3 mutant, 10-7-2 mutation.
- the 9-5-4 mutant can be obtained as they are or as appropriate.
- ITG- ⁇ 4 mutant, 1-2-1 mutant, 1-1-2 mutant, 7-3-2 mutant, 10-7-3 mutant, 10-7-2 mutant, and 9- When the 5-4 mutant is used as it is, it can be prepared according to the method of Example 2 of the present specification. Further, the alteration can be performed by appropriately modifying the amino acid, in addition to performing substitution, deletion, addition and / or insertion of an amino acid by using a technique usually used in the field of protein engineering.
- the ITG- ⁇ 4 mutant of the present invention can be obtained by the following method. Using the cellular cDNA from which the mutant was obtained as a template, primers for amplifying the DNA encoding the target mutant are appropriately designed and PCR is performed. The PCR product is digested with an appropriately set restriction enzyme, incorporated into an expression vector, an expression vector prepared using Lipofectamine 2000 (Invitrogen) or the like is introduced into a host cell, and the culture supernatant is purified as necessary.
- a DNA sequence may be designed from an amino acid sequence using a method well known to those skilled in the art, and the DNA may be synthesized and used for incorporation into an expression vector.
- short mutants such as 1-2-1 mutants may be made by direct peptide synthesis.
- ITG- ⁇ 4 mutant has the ability to bind to the ITG- ⁇ 4 or ITG- ⁇ 9 ligand should be determined by referring to the description of the present specification while employing a method well known to those skilled in the art. Can do. Specifically, it can be carried out by the following method using a ligand solid phase ELISA. ITG- ⁇ 4 or ITG- ⁇ 9 ligand is immobilized on a solid phase, blocked with BSA / PBS, and a solution containing the test ITG- ⁇ 4 mutant labeled with FLAG is added. After reacting at 4 ° C. for 1 hour, the anti-FLAG antibody and anti-mouse IgG mixture is added, reacted at 4 ° C. for 30 minutes, washed and developed with TMB solution to analyze the binding ability.
- a ligand solid phase ELISA ITG- ⁇ 4 or ITG- ⁇ 9 ligand is immobilized on a solid phase, blocked with BSA / PBS, and a solution containing the test ITG
- Whether the ITG- ⁇ 4 mutant has an activity of inhibiting the binding between ITG- ⁇ 4 and its ligand or ITG- ⁇ 9 and its ligand is determined by whether the ITG- ⁇ 4 mutant expresses ITG- ⁇ 4 or ITG- ⁇ 9 It can be determined by whether or not binding (cell adhesion) between cells to be bound and their ligands is inhibited. Specifically, BSA is coupled to the ITG- ⁇ 4 ligand or ITG- ⁇ 9 ligand and allowed to stand overnight at 4 ° C. to solid phase.
- a mixture of cells expressing integrin ⁇ 4 or integrin ⁇ 9 (for example, CHO cells) and GST fusion test ITG- ⁇ 4 mutant was added at 37 ° C. in a CO 2 incubator. Incubate for 1 hour. Non-adherent cells are removed with PBS, and adherent cells are fixed and stained with 20% methanol containing 0.5% crystal violet. The cell adhesion inhibitory effect can be measured and quantified at an absorbance of 595 nm by dissolving with 20% acetic acid.
- the ITG- ⁇ 4 mutant of the present invention can be used as a pharmaceutical composition based on knowledge normally used by those skilled in the art of protein medicine. Therefore, in one aspect, the present invention relates to a pharmaceutical composition containing the ITG- ⁇ 4 variant of the present invention as an active ingredient.
- the pharmaceutical composition of the present invention is an inflammatory disease or autoimmune disease such as cancer, cancer metastasis, multiple myeloma or rheumatoid arthritis, bronchitis, inflammatory bowel disease, Crohn's disease, multiple sclerosis and the like.
- Acute central nervous system injury such as HIV, allergic encephalomyelitis, hypersensitivity, T cell-dependent autoimmune diseases such as type I diabetes, allergic pneumonia, immune complex-mediated lung injury, acute nephrotoxic nephritis , Delayed hypersensitivity (skin sclerosis and fibrin deposition, etc.), arteriosclerosis, therapeutic or preventive agent for myocardial infarction, or suppression of rejection at the time of transplantation, such as suppression of rejection of allografts of vascularized heart can do.
- the ITG- ⁇ 4 variant of the present invention when used as a pharmaceutical composition, examples of the administration site include oral administration, buccal administration, intratracheal administration, subcutaneous administration, intramuscular administration, intravascular (intravenous) administration, Examples include transdermal administration.
- the pharmaceutical composition can be a preparation of a coating agent such as an injection, a capsule, a tablet, a syrup, a granule, or an ointment.
- the antibody of the present invention may be administered alone or together with a pharmacologically acceptable single substance.
- the immunogen used for the production of the antibody of the present invention is a polypeptide having all or part of the ITG- ⁇ 4 variant (preferably an ITG- ⁇ 4 variant-specific amino acid sequence not present in ITG- ⁇ 4,
- expression vectors eg, pGEX (for E. coli), pcDNA3.1 (for expression of animal cells), etc.) containing DNA encoding SEQ ID NOs: 15 to 19)
- E. coli, yeast, insect cells, animal cells, etc. containing DNA encoding SEQ ID NOs: 15 to 19
- It can be obtained by culturing and expressing a transformed host microorganism / cultured cell such as Escherichia coli in an appropriate medium (for example, LB medium).
- an appropriate medium for example, LB medium.
- the animal is immunized with the antigen by dissolving the antigen in a sodium phosphate buffer (PBS) and, if necessary, an immunostimulant (eg, mineral oil or aluminum precipitate and heat-killed bacteria or lipopolysaccharide, Freund's). Immunization of non-human mammals or birds with a complete adjuvant or Freund's incomplete adjuvant.
- Administration of the immunogen to the animal can be performed, for example, by subcutaneous injection, intraperitoneal injection, intravenous injection, intramuscular injection, or footpad injection.
- the amount of the immunogen used is not particularly limited as long as it is an amount capable of producing an antibody, but is preferably 0.1 to 1000 ⁇ g, more preferably 1 to 500 ⁇ g, and still more preferably 10 to 100 ⁇ g. Immunization can be performed once or several times at appropriate intervals. Preferably, immunization once per 1 to 5 weeks can be performed a plurality of times (preferably 2 to 5 times in total). Polyclonal antibodies can be obtained by purification from the sera of animals that exhibit a sufficient antibody titer.
- a monoclonal antibody When producing a monoclonal antibody, it is obtained by culturing a hybridoma obtained by fusing an antibody-producing cell obtained from the spleen of an immunized animal immunized by the above method with a myeloma cell (myeloma cell). Can do. Examples of the fusion method include the method of Milstein et al. (Galfre, G. & Milstein, C., Methods Enzymol. 73: 3-46, 1981). The antibody can be obtained by culturing the hybridoma in vitro and purifying the culture solution.
- the antibody of the present invention is a human chimeric antibody
- DNA encoding VH and VL of a non-human animal monoclonal antibody that binds to the ITG- ⁇ 4 variant is prepared, and this is combined with human immunoglobulin constant region cDNA. It can be obtained by incorporating into an expression vector and introducing the vector into an appropriate host cell for expression (Morrison, SL, et al., Proc. Natl. Acad. Sci. USA, 81, 6851-6855, 1984). ).
- a V region obtained by grafting amino acid sequences encoding CDRs of VH and VL of a non-human animal monoclonal antibody that binds to an ITG- ⁇ 4 mutant into VH and VL of a human antibody Can be obtained by constructing a DNA encoding the DNA, combining the constructed DNA with a constant region cDNA of a human-derived immunoglobulin, incorporating the vector into an expression vector, introducing the vector into an appropriate host cell and expressing it (L Rieohmann et al., Nature, 332, 323, 1988: Kettleborough, CA et al., Protein Eng., 4, 773-783, 1991; Clark M., Immunol.
- the CDR of the non-human animal monoclonal antibody includes the amino acid sequence predicted from the DNA sequence encoding the VH and VL of the non-human animal monoclonal antibody obtained by the above-described method, the entire amino acid sequence of VH and VL of the known antibody, Can be obtained by comparing.
- the amino acid sequence of a known antibody can be obtained from the amino acid sequence of an antibody registered in a database such as a protein data bank.
- the FR of the humanized antibody is not particularly limited as long as the antibody after transplantation exerts the effects of the present invention, but preferably the variable region of the humanized antibody (hereinafter referred to as “V region”).
- the DNA sequence encoding the V region of the humanized antibody to be used is designed as a DNA sequence corresponding to the amino acid sequence obtained by combining the CDR amino acid sequence of the non-human animal monoclonal antibody and the FR amino acid sequence of the human antibody.
- DNA encoding the V region of a humanized antibody can be prepared by a method well known to those skilled in the art based on the designed DNA sequence.
- Human antibodies can be obtained, for example, by using a human antibody phage library or a human antibody-producing transgenic mouse (Tomitsuka et al., Nature Genet., 15, 146-156 (1997)).
- a human antibody phage library for example, an ITG- ⁇ 4 mutant or a peptide having an epitope sequence recognized by the antibody of the present invention is immobilized on a solid phase, and the phage antibody library is reacted to form a non-binding phage. After washing and removing the bound phages, a desired clone can be obtained (panning) by collecting the bound phages.
- the accuracy of the obtained clone can be raised by amplifying the obtained phage and repeatedly performing panning for the amplified library.
- a complete human antibody having these gene sequences can be prepared.
- a human antibody-producing transgenic mouse is a mouse in which an Ig gene of a human antibody is introduced into a mouse in which an endogenous immunoglobulin (Ig) gene is knocked out.
- a human antibody-producing transgenic mouse can be obtained, for example, by the following method.
- a human-mouse hybrid cell is treated with colcemid (spindle formation inhibitor) for 48 hours to form a microcell, which is a structure in which one to several chromosomes are enveloped in the nuclear membrane.
- Microcells isolated in the presence of cytochalasin B are fused with chromosome recipient cells (mouse ES cells) with polyethylene glycol to produce microcell hybrid ES cells, which are injected into mouse embryos.
- ITG- ⁇ 4 mutant human antibodies By immunizing a human antibody-producing transgenic mouse as an immunized animal with an antigen (preferably a peptide having an epitope sequence recognized by the antibody of the present invention) according to the above-described method for producing an anti-ITG- ⁇ 4 mutant antibody, ITG- ⁇ 4 mutant human antibodies can be obtained.
- an antigen preferably a peptide having an epitope sequence recognized by the antibody of the present invention
- An F (ab ′) 2 fragment (an antibody fragment having an antigen binding activity with a molecular weight of about 100,000) is obtained by cleaving at the 234th amino acid residue of the H chain by treating the IgG antibody of the present invention with pepsin. be able to.
- the Fab ′ fragment can be obtained by treating F (ab ′) 2 obtained by the above-described method with dithiothreitol.
- the Fab ′ fragment of the present invention can be obtained from DNA encoding Fab ′ of the antibody of the present invention.
- Fab fragments (antibody fragments having an antigen binding activity of about 50,000 molecular weight in which about half of the region on the N-terminal side of the H chain and all regions of the L chain are bound by disulfide bonds) are treated with papain. By doing so, it can be obtained by cleaving at the 224th amino acid residue of the H chain.
- the Fab fragment of the present invention can be obtained from DNA encoding the Fab of the antibody of the present invention.
- the scFv can be obtained by inserting a DNA encoding a linker sequence between cDNAs encoding the VH and VL of the antibody of the present invention to construct a DNA encoding scFv.
- the length of the linker is not particularly limited as long as VH and VL can associate with each other, but is preferably 10 to 20 residues, and more preferably 15 residues.
- the linker sequence is not particularly limited as long as it does not inhibit the folding of the polypeptide chains of the two domains of VH and VL, but is preferably a linker consisting of glycine and / or serine, more preferably , GGGGS (G: glycine, S: serine) or a repetitive sequence thereof.
- dsFv can be obtained by substituting one cysteine residue in each of VH and VL with a cysteine residue and connecting the cysteine residues with a disulfide bond.
- Diabody can be obtained by constructing the above-mentioned scFv-encoding DNA such that the amino acid sequence of the linker is 8 residues or less (preferably 5 residues).
- Bispecific diabody can be obtained by preparing scFv by combining VH and VL DNAs of two different types of scFv.
- the peptide containing CDR of the present invention can be obtained by designing as a peptide having the amino acid sequence of CDR of VH or VL of the antibody of the present invention.
- Example 1 Identification of integrin ⁇ 4 mutant A novel human ⁇ 4 integrin mutant was identified by 3'-lace method using Jurkat cell and Rec-1 cell cDNA.
- QIAGEN QIAGEN RNeasy kit
- 3′-race cDNA synthesis was performed using 3′-race primer QT primer (5′-CCAGTGAGCAGAGTGACGAGGAACTCGAGCTCAAGCTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
- Q0 primer (5′-CCAGTGAGCAGAGTGACG-3 ′: SEQ ID NO: 23) and three primers ( ⁇ 4-N: 5′-TGTCTCGAGTGGCCGTTTTAGGTTTGAATGT-3 ′) of various regions of human integrin ⁇ 4 shown below using the obtained cDNA as a template : SEQ ID NO: 24; ⁇ 4-1246: 5′-ACTGGTGGTTGCTATGGAGTA-3 ′: SEQ ID NO: 25; ⁇ 4-2118: 5′-CTTTTCGGTCTGATTCTGCTG-3 ′: SEQ ID NO: 26).
- the obtained PCR product was diluted 20 times, and 2nd PCR was performed using 1 ⁇ L thereof as a template.
- a Q1 primer (5′-GAGGACTCGAGCTCAAGC-3 ′: SEQ ID NO: 27) and three human integrin ⁇ 4 primers ( ⁇ 4-1246: 5′-ACTGGTGTGTCTCTAGGGAGTA-3 ′: SEQ ID NO: 25; ⁇ 4- 2118: 5′-CTTTTCGGTCTGATTCTGCTG-3 ′: SEQ ID NO: 26; ⁇ 4-2556: 5′-CACTTCAGCCCAATTCTTCAGC-3 ′: SEQ ID NO: 28) was used.
- the obtained plurality of bands were purified by gel extraction, cloned using a TOPO cloning kit (Invitrogen), and the nucleotide sequence was determined by sequencing.
- PCR was performed using ⁇ 4-N primer and 3′-end primer specific for each mutant. went. The 3 ′ end primers used are shown below. A FLAG tag sequence for expression analysis was added to each primer.
- ha4-1-1-2-FLAG-RV primer 5'-TTACTCTAGACTATTTATCGTCATCATCTTTGTTAGCATTACTCCTCAAAGCCATCATT-3 '(SEQ ID NO: 29); ha4-1-2-1-FLAG-RV primer: 5′-TCGTTCTAGACTATTTATCGTCATCATCTTTGTTAGCTGTCCTAGCTCTGTACTTGCT-3 ′ (SEQ ID NO: 30); ha4-7-3-2-FLAG-RV primer: 5'-CCACTCTAGACTATTTATCGTCATCATCTTTGTTAGCATGTGTGGGCATACCCACC-3 '(SEQ ID NO: 31); ha4-10-6-3-FLAG-RV primer: 5′-TTGATCTAGACTACTTTATCGCATCATCTTTGTTAGTCTGAGGAAAAGCTGAGAGAGT-3 ′ (SEQ ID NO: 32); ha4-10-7-2-FLAG-RV primer: 5′-CCCATCTAGACTATTTATCGTCATCATCTTTGTTAGTCGAGACAACACTTCAAAAACC
- Example 4 Expression analysis of endogenous 1-2-1 mutant (1) Preparation of anti-1-2-1 mutant antibody 1-2-1 mutant-specific amino acid sequence GSISKYRART (SEQ ID NO: 15) A rabbit polyclonal antibody was prepared using as an antigen, and expression analysis of the endogenous 1-2-1 mutant was performed. Specifically, bovine thyroglobulin was introduced into the GSISKYRART sequence (SEQ ID NO: 15), which is a 1-2-1 mutant-specific amino acid sequence, and rabbits were immunized. The antiserum was purified using thiol Sepharose beads (GE) conjugated with GSISKYRART peptide (SEQ ID NO: 15) to obtain an anti-1-2-1 mutant antibody.
- GSISKYRART SEQ ID NO: 15
- Jurkat cells (ATCC, TIB-152) and Rec-1 cells (ATCC, CRL-3004) were serum-free cultured in TIL medium (Immuno-Biological Laboratories, Inc.), and the culture supernatant after 3 days was increased 20 times with Vivaspin. Concentrated and used for Western blot.
- Example 5 Cell adhesion inhibition function of integrin ⁇ 4 and integrin ⁇ 9 of 1-2-1 mutant (1) Preparation of GST-fused 1-2-1 mutant protein Analysis of function of 1-2-1 mutant Therefore, it was expressed in E. coli as a GST fusion protein and purified by a conventional method using glutathione sepharose. In order to produce an integrin ⁇ 4 mutant (1-2-1 mutant) protein in E. coli, the 1-2-1 mutant was recombined into pGEX6P-1 (GE).
- GE pGEX6P-1
- 5 ′ end primer (5′-GAGGATATTCACACGTGGACACTGAGAG-3 ′: SEQ ID NO: 35) and 3 ′ end primer (5′-CGTCTCGAGTTATGTTCCTAGCTCTGTACTTGC-3 ′: sequence designed to delete the N-terminal signal sequence of 1-2-1 No. 36) was used for PCR using the 1-2-1 mutant expression vector as a template.
- the PCR product was digested with EcoRI and XhoI restriction enzymes and then incorporated into the pGEX6P-1 vector so that the frame matched the GST part. The sequence was confirmed by sequencing.
- This plasmid was transformed into Escherichia coli, grown in LB medium containing ampicillin at 37 ° C., cultured at 20 ° C.
- IPTG isopropyl- ⁇ -thiogalactopyranoside
- the beads were collected by centrifugation, washed 3 times with NETN100 (20 mM Tris-HCl (pH 8.0), 100 mM NaCl, 1 mM EDTA, 0.5% (v / v) NP-40), and then the eluate (20 mM reduced glutathione). (Sigma), 100 mM Tris-HCl (pH 8.8)).
- NETN100 20 mM Tris-HCl (pH 8.0), 100 mM NaCl, 1 mM EDTA, 0.5% (v / v) NP-40
- the eluate (20 mM reduced glutathione).
- Sigma 100 mM Tris-HCl (pH 8.8)).
- the obtained GST fusion 1-2-1 mutant protein was dialyzed against PBS and quantified with a protein assay kit (BioRad).
- Mouse ⁇ 4 integrin (referred to herein as “m ⁇ 4”) expression vector is: Using the m ⁇ 4-Fw primer (5′-CGAGGATCCTGAATGTTCTCACCCAAGAGC-3 ′: SEQ ID NO: 37) and the m ⁇ 4-RV primer (5′-TTACTCGAGACGGGTCTTCTGAACGAGATT-3 ′: SEQ ID NO: 38), the mouse melanoma cell line B16-F10 (ATCC, CRL- 6475) as a template, the PCR product was cleaved with restriction enzymes BamHI and XhoI, and then cloned into pcDNA3.1 vector (Invitrogen).
- a mouse ⁇ 9 integrin (referred to herein as “m ⁇ 9”) expression vector was constructed by the following method. PCR was performed using m ⁇ 9-Fw primer (5′-GCTAAGCTTCTCTCCGACTGTTAGCCCATCG-3 ′: SEQ ID NO: 39) and m ⁇ 9-RV primer (5′-CCATCTAGAGACTACTCTCGAGAGGAAACC-3 ′: SEQ ID NO: 40) as a template. First, cloning was performed using the TOPO cloning kit (Invitrogen) (m ⁇ 9 / TOPO). After confirming the mouse ⁇ 9 integrin sequence by sequencing, a m ⁇ 9 integrin expression vector to which a FLAG tag was added was prepared.
- m ⁇ 9-Fw primer 5′-GCTAAGCTTCTCTCTCCGACTGTTAGCCCATCG-3 ′: SEQ ID NO: 39
- m ⁇ 9-RV primer 5′-CCATCTAGAGACTACTCTCGAGAGGAAACC-3 ′: SEQ
- PCR was performed using m ⁇ 9 / TOPO as a template.
- the obtained PCR product was cleaved with restriction enzymes HindIII and XbaI and then incorporated into a pcDNA3.1 vector (Invitrogen).
- the vectors constructed for each of mouse ⁇ 4 integrin and ⁇ 9 integrin were sequence confirmed by the sequencing method.
- Each gene was introduced into CHO-K1 cells (ATCC, CCL-61) using lipofectamine 2000 (Invitrogen), and after selection with DMEM, 10% FCS containing 1 mg / mL G418 (PAA) as an antibiotic, restriction was performed. External dilution was performed to confirm the expression of mouse ⁇ 4 integrin and mouse ⁇ 9 integrin in a single colony.
- Mouse ⁇ 4 integrin is expressed by flow cytometric analysis using an anti-mouse ⁇ 4 integrin antibody (R1-2) (Biolegend), and mouse ⁇ 9 integrin is expressed by Western blot using an anti-FLAG antibody (Wako). Highly expressed clones were used for the cell adhesion inhibitory activity test.
- the functional site peptide of extracellular matrix protein to which BSA was coupled was allowed to stand overnight at 4 ° C. and solid-phased. After blocking with DMEM medium containing 0.5% BSA for 1 hour, CHO cells expressing ⁇ 4 integrin and ⁇ 9 integrin and 1-2-1 / GST protein (final concentration, 6.25 ⁇ g / mL, 12.5 ⁇ g, respectively) / ML, and 25 ⁇ g / mL) was added, and the mixture was cultured at 37 ° C. for 1 hour in a CO 2 incubator. Non-adherent cells were removed with PBS, and adherent cells were fixed and stained with 20% methanol containing 0.5% crystal violet. The cell adhesion inhibitory effect was examined by dissolving with 20% acetic acid and measuring the absorbance at 595 nm with an immunoreader.
- the 1-2-1-GST protein had a function of simultaneously inhibiting cell adhesion via integrin ⁇ 4 and integrin ⁇ 9 (not shown).
- OPN is known to be involved in arteriosclerosis, myocardial infarction, cancer metastasis, and inflammatory diseases. Since the ITG- ⁇ 4 mutant of the present invention can inhibit adhesion through both OPN and integrin ⁇ 4 and integrin ⁇ 9, it has been shown that it can be a more effective therapeutic agent for these diseases.
- Pp-vWF is known to be involved in thrombus, platelet function, inflammation and the like.
- the ITG ⁇ 4 mutant of the present invention can inhibit adhesion via both pp-vWF and integrin ⁇ 4 and integrin ⁇ 9, it can be a more effective therapeutic agent for inflammatory diseases (Japanese Patent Laid-Open No. 2005-298336). It was shown that. Furthermore. Fibronectin EIIIA (also known as EDA) is known to be involved in cancer (Clin. Chim. Acta. (2006) 372: 83-93). Since the ITG ⁇ 4 mutant of the present invention can inhibit adhesion through both fibronectin EIIIA and integrin ⁇ 4 and integrin ⁇ 9, it has been shown that it can be a more effective cancer therapeutic agent or cancer metastasis inhibitor.
- Example 6 EAE inhibitory effect by integrin ⁇ 4 mutant 1-2-1 protein
- the 1-2-1 / GST protein was used to examine the disease exacerbation inhibitory effect using the EAE model.
- 200 ⁇ g of PLP139-151 peptide (sequence: HSLGKWLGHDPDKF: SEQ ID NO: 43) and CFA emulsion were subcutaneously administered to the ridge of an SJL / J mouse (Charles River, Japan). ) was injected intravenously, and two days later, pertussis toxin (400 ng) was also injected intravenously.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- Genetics & Genomics (AREA)
- Cell Biology (AREA)
- Gastroenterology & Hepatology (AREA)
- Zoology (AREA)
- Toxicology (AREA)
- Epidemiology (AREA)
- Diabetes (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Urology & Nephrology (AREA)
- Oncology (AREA)
- Microbiology (AREA)
- Rheumatology (AREA)
- Virology (AREA)
- Mycology (AREA)
- AIDS & HIV (AREA)
- Dermatology (AREA)
- Physical Education & Sports Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
Abstract
Description
(1) ヒトインテグリンα4(配列番号10)の細胞外領域の一部を有するインテグリンα4変異体。
(2) ヒトインテグリンα4(配列番号10)の細胞外領域が、ヒトインテグリンα4(配列番号10)のβ-propellorドメイン由来のアミノ酸配列を含んでいる(1)に記載のペプチド。
(3) ヒトインテグリンα4(配列番号10)の細胞外領域が、配列番号9及び配列番号11~14から選択される1の配列である、(1)に記載のペプチド。
(4) 更に、配列番号15~19から選択される1の配列がヒトインテグリンα4(配列番号10)の細胞外領域のC末に結合していることを特徴とする(1)~(3)のいずれか1項に記載のペプチド。
(5) 配列番号4~9から選択される1の配列を有するペプチド。
(6) インテグリンα4のリガンドと結合し、かつ/又は、インテグリンα4とそのリガンドとの結合を阻害する(1)~(5)のいずれか1項に記載のペプチド。
(7) インテグリンα4のリガンドが、VCAM1、Fn、JAM2、MAdCAM1、MDC-L(ADAM28)、pp-vWF及びOPNからなる群から選択される1の物質である(6)に記載のペプチド。
(8) インテグリンα4のリガンドがpp-vWF又はOPNである(6)に記載のペプチド。
(9) インテグリンα4のリガンドが配列番号20又は21のアミノ酸配列を有するペプチドである(6)に記載のペプチド。
(10) 更にインテグリンα9のリガンドと結合し、かつ/又は、インテグリンα9とそのリガンドとの結合を阻害する(1)~(9)のいずれか1項に記載のペプチド。
(11) インテグリンα9のリガンドが、VCAM1、Fn、JAM2、MAdCAM1、MDC-L(ADAM28)、pp-vWF及びOPNからなる群から選択される1の物質である(10)に記載のペプチド。
(12) インテグリンα9のリガンドがpp-vWF又はOPNである(10)に記載のペプチド。
(13) インテグリンα9のリガンドが配列番号20又は21のアミノ酸配列を有するペプチドである(10)に記載のペプチド。
(14) 可溶性ペプチドである、(1)~(13)のいずれか1項に記載のペプチド。
(15) (1)~(14)のいずれか1項に記載のペプチドを有効成分として含有する医薬組成物。
(16) (1)~(14)のいずれか1項に記載のペプチドを特異的に認識(又は結合)する抗体。
(17) インテグリンα4を認識しない(又はインテグリンα4と結合しない)、(16)に記載の抗体。
上述の通り、本発明のITG-α4変異体は、ITG-α4のリガンドと結合し、かつ/又は、ITG-α4とそのリガンドとの結合を阻害する活性、並びに/あるいは、ITG-α9のリガンドと結合し、かつ/又は、ITG-α9とそのリガンドとの結合を阻害する活性を有する。好ましくは、本発明のITG-α4変異体は、ITG-α4のリガンドと結合し、かつ/又は、ITG-α4とそのリガンドとの結合を阻害する活性、並びに、ITG-α9のリガンドと結合し、かつ/又は、ITG-α9とそのリガンドとの結合を阻害する活性を有する。より好ましくは、本発明のITG-α4変異体は、ITG-α4とITG-α9の両方が結合する共通のリガンドと結合し、あるいは、ITG-α4とITG-α9の両方が結合する共通のリガンドとITG-α4との結合、及び、ITG-α4とITG-α9の両方が結合する共通のリガンドとITG-α9との結合を阻害する。ITG-α4とITG-α9の両方が結合する共通のリガンドとしては、Fn-EIIIA、pp-vWF及びOPNを挙げることができる。
本発明のITG-α4変異体は、ITG-α4の構造(図3)及び配列(配列番号10)を参照しながら当業者周知の方法を採用しながら本明細書の記載を参酌することにより得ることができる。例えば、ITG-α4を発現することが知られている細胞(例えば、Jurkat細胞等のT細胞、Rec-1細胞等)のcDNAを用いて3’-race法を行うことによりITG-α4変異体を得ることができる。例えば、ITG-α4は、腸、T細胞、IgA産生B細胞、(単核)白血球等で発現していることが報告されている。具体的には、ITG-α4を発現することが知られている細胞からのトータルRNAを、QIAGEN RNeasyキット(QIAGEN)を使用して抽出する。トータルRNAから3’-race用cDNA合成は、Firststrand cDNA合成キット(ロッシュ)を用いて行うことができる。具体的には、逆転写に使用するプライマーとして3’-race用のプライマーQTプライマー(例えば、配列番号22)を用いて、3’-race用のcDNAを合成する。得られたcDNAをテンプレートとしてQ0プライマー(例えば、配列番号23)と次に示すITG-α4の種々の領域のプライマー(例えば、ヒトITG-α4の場合、配列番号24、配列番号25、配列番号26等)を用いて1st PCRを行う。得られたPCR産物を20倍希釈し、そのうちの1μLをテンプレートとして利用して、Q1プライマー(例えば、配列番号27)とITG-α4プライマー((例えば、ヒトITG-α4の場合、配列番号25、配列番号26、配列番号28等)を用いて2nd PCRを行う。得られたバンドを、ゲル抽出により精製し、クローニングを行うことによりITG-α4変異体を得ることができる。
ITG-α4変異体が、ITG-α4又はITG-α9のリガンドと結合能を有しているか否かは、当業者周知の方法を採用しながら本明細書の記載を参酌することにより決定することができる。具体的には、リガンド固相ELISAを用いて以下の方法により行うことができる。ITG-α4又はITG-α9のリガンドを固相し、BSA/PBSでブロッキング後、FLAGで標識した被験ITG-α4変異体を含有する溶液を添加する。1時間4℃で反応後、抗FLAG抗体と抗マウスIgG混合物を添加後、4℃で30分間反応させ、洗浄後にTMB液で発色させて結合能を解析することができる。
ITG-α4変異体が、ITG-α4とそのリガンド又はITG-α9とそのリガンドと結合を阻害する活性を有しているか否かは、ITG-α4変異体がITG-α4又はITG-α9を発現する細胞とそれらのリガンドとの結合(細胞接着)を阻害するか否かにより決定することができる。具体的には、ITG-α4のリガンド又はITG-α9のリガンドにBSAをカップリングさせ、4℃で一晩放置し固相する。BSAを含むDMEM培地で1時間ブロッキング後、インテグリンα4、又はインテグリンα9を発現する細胞(例えば、CHO細胞)と、GST融合被験ITG-α4変異体の混合物を添加しCO2インキュベーター内で37℃で、1時間培養する。PBSで非接着細胞を除去し、0.5%のクリスタルバイオレットを含む20%メタノールで接着細胞を固定、染色させる。20%酢酸で転溶し細胞接着阻害効果を595nmの吸光度にて測定、定量することができる。
本発明のITG-α4変異体は、タンパク質医薬の分野において当業者が通常用いる知識に基づき、医薬組成物として使用することができる。よって、一の態様において本発明は、本発明のITG-α4変異体を有効成分として含有する医薬組成物に関する。具体的には、本発明の医薬組成物は、癌、癌転移、多発性骨髄腫や関節リウマチ、気管支炎、炎症性腸疾患、クローン病、多発性硬化症等の炎症性疾患又は自己免疫疾患、急性中枢神経系損傷、HIV等の免疫不全、アレルギー性脳脊髄炎、過敏症、I型糖尿病等のT細胞依存性自己免疫疾患、アレルギー性肺炎、免疫複合体介在肺障害、急性腎毒性腎炎、遅延性過敏症(皮膚硬化とフィブリンの沈着等)、動脈硬化、心筋梗塞の治療薬又は予防薬、あるいは血管柄付心臓の同種移植の拒絶反応抑制等の移植時の拒絶反応の抑制剤とすることができる。
本発明の抗体は、以下の方法により得ることができる。まず、本発明の抗体の作製に使用する免疫原は、ITG-α4変異体の全部若しくはその一部を有するポリペプチド(好ましくは、ITG-α4に存在しないITG-α4変異体特異的アミノ酸配列、例えば、配列番号15~19))をコードするDNAを含む発現ベクター(例えば、pGEX(大腸菌用)、pcDNA3.1(動物細胞発現用)等)を大腸菌、酵母、昆虫細胞、動物細胞等に形質転換し、形質転換した大腸菌等の宿主微生物・培養細胞を適切な培地(例えば、LB培地等)で培養して発現させることにより得ることができる。また、当該配列を有するペプチドを化学合成したものを用いることも可能である。
本発明の抗体がヒト型キメラ抗体の場合、ITG-α4変異体と結合する非ヒト動物モノクローナル抗体のVH及びVLをコードするDNAを調製し、これをヒト免疫グロブリンの定常領域cDNAと結合して発現ベクターに組み込み、適当な宿主細胞に当該ベクターを導入して発現させることにより得ることができる(Morrison,S.L.ら,Proc.Natl.Acad.Sci.USA,81,6851-6855,1984)。
本発明の抗体がヒト化抗体の場合は、ITG-α4変異体と結合する非ヒト動物モノクローナル抗体のVH及びVLのCDRをコードするアミノ酸配列をヒト抗体のVH及びVLのFRに移植したV領域をコードするDNAを構築し、構築したDNAをヒト由来免疫グロブリンの定常領域cDNAと結合して発現ベクターに組み込み、適当な宿主細胞に当該ベクターを導入して発現させることにより得ることができる(L.Rieohmannら,Nature,332,323,1988:Kettleborough,C.A.ら,Protein Eng.,4,773-783,1991;Clark M.,Immunol.Today.,21,397-402,2000参照)。非ヒト動物モノクローナル抗体のCDRは、上述の方法によって得られた非ヒト動物モノクローナル抗体のVH及びVLをコードするDNA配列から予測されるアミノ酸配列と、既知の抗体のVH及びVLの全アミノ酸配列とを比較して得ることができる。既知の抗体のアミノ酸配列は、例えば、プロテイン・データ・バンク等のデータベースに登録されている抗体のアミノ酸配列より得ることができる。また、ヒト化抗体のFRとしては、移植後の抗体が本発明の効果を奏するものであれば特に限定は無いが、好ましくは、ヒト化抗体の可変領域(以下、「V領域」という)がCDRが由来する非ヒト動物モノクローナル抗体のV領域と類似の立体構造となるヒト抗体のFR、又は、使用する非ヒト動物モノクローナル抗体のFRのアミノ酸配列と相同性が高いヒト抗体FRである。使用するヒト化抗体のV領域をコードするDNA配列は、非ヒト動物モノクローナル抗体のCDRのアミノ酸配列とヒト抗体のFRのアミノ酸配列を結合したアミノ酸配列に対応するDNA配列として設計する。ヒト化抗体のV領域をコードするDNAは、設計したDNA配列を基に、当業者周知の方法によって作製することができる。
ヒト抗体は、例えば、ヒト抗体ファージライブラリー又はヒト抗体産生トランスジェニックマウスを利用することにより得ることができる(富塚ら,Nature Genet.,15,146-156(1997))。ヒト抗体ファージライブラリーを利用する場合、例えば、ITG-α4変異体又は本発明の抗体が認識するエピトープ配列を有するペプチドを固相に固定化し、ファージ抗体ライブラリーを反応させて、非結合のファージを洗浄除去した後、結合したファージを回収することにより、所望のクローンを得ることができる(パンニング)。また、得られたファージを増幅させ、増幅させたライブラリーについて更にパニングを繰り返し行うことにより、得られたクローンの精度を上げることができる。得られたクローンのVH遺伝子及びVL遺伝子を解析することにより、これらの遺伝子配列を有する完全なヒト抗体を作製することもできる。
F(ab’)2断片(分子量約10万の抗原結合活性を有する抗体断片)は、本発明のIgG抗体をペプシンで処理することにより、H鎖の234番目のアミノ酸残基で切断して得ることができる。Fab’断片は、上述の方法により得られたF(ab’)2をジチオスレイトール処理して得ることができる。また、本発明のFab’断片は、本発明の抗体のFab’をコードするDNAから得ることができる。Fab断片(H鎖のN末端側の約半分の領域とL鎖の全領域がジスルフィド結合により結合された分子量約5万の抗原結合活性を有する抗体断片)は、本発明の抗体をパパインで処理することにより、H鎖の224番目のアミノ酸残基で切断して得ることができる。また、本発明のFab断片は、本発明の抗体のFabをコードするDNAから得ることができる。scFvは、本発明の抗体のVH及びVLをコードするcDNAの間にリンカー配列をコードするDNAを挿入して、scFvをコードするDNAを構築することにより得ることができる。リンカーの長さは、VHとVLが会合することができる長さであれば特に限定は無いが、好ましくは10~20残基であり、より好ましくは15残基である。また、リンカーの配列は、VHとVLの二つのドメインのポリペプチド鎖の折りたたみを阻害しないものであれば特に限定は無いが、好ましくは、グリシン及び/又はセリンからなるリンカーであり、より好ましくは、GGGGS(G:グリシン、S:セリン)又はその繰り返し配列である。dsFvは、VH及びVL中のそれぞれ1アミノ酸残基をシステイン残基に置換し、当該システイン残基間をジスルフィド結合により結合させることにより得ることができる。Diabodyは、上述のscFvをコードするDNAにおいて、リンカーのアミノ酸配列が8残基以下(好ましくは5残基)となるように構築することにより得ることができる。バイスペシフィックなDiabodyは、異なる2種類のscFvのVH及びVLのDNAを組み合わせてscFvを作製することにより得ることができる。本発明のCDRを含むペプチドは、本発明の抗体のVH又はVLのCDRのアミノ酸配列を有するペプチドとして設計することにより得ることができる。
新規ヒトα4インテグリン変異体の同定は、Jurkat細胞、Rec-1細胞cDNAを用いた3’-race法を用いて行った。ヒトT細胞細胞株Jurkat細胞(ATCC、TIB-152)とヒトマントル細胞リンパ腫細胞株Rec-1細胞(ATCC、CRL-3004)からのトータルRNAを、QIAGEN RNeasyキット(QIAGEN)を使用して抽出した。具体的には、逆転写に使用するプライマーを3’-race用のプライマーQTプライマー(5’-CCAGTGAGCAGAGTGACGAGGACTCGAGCTCAAGCTTTTTTTTTTTTTTTTT-3’:配列番号22)を利用して3’-race用cDNA合成を行った。得られたcDNAをテンプレートとしてQ0プライマー(5’-CCAGTGAGCAGAGTGACG-3’:配列番号23)と次に示すヒトインテグリンα4の種々の領域の3種のプライマー(α4-N:5’-TGTCTCGAGTGGCCGTTTAGTGTTGAATGT-3’:配列番号24;α4-1246:5’-ACTGGTGGTTGCTATGGAGTA-3’:配列番号25;α4-2118:5’-CTTTTCGGTCTGATTCTGCTG-3’:配列番号26)を用いて1st PCRを行った。得られたPCR産物を20倍希釈し、そのうちの1μLをテンプレートとして利用して2nd PCRを行った。2nd PCR用のプライマーセットとして、Q1プライマー(5’-GAGGACTCGAGCTCAAGC-3’:配列番号27)と3種のヒトインテグリンα4プライマー(α4-1246:5’-ACTGGTGGTTGCTATGGAGTA-3’:配列番号25;α4-2118:5’-CTTTTCGGTCTGATTCTGCTG-3’:配列番号26;α4-2556:5’-CACTTCAGCCAATTCTTCAGC-3’:配列番号28)を利用した。得られた複数のバンドは、ゲル抽出により精製し、TOPOクローニングキット(Invitrogen)によりクローニングを行い、シークエンスによる塩基配列を決定した。
得られた全てのインテグリンα4変異体は、インテグリンα4細胞外領域からのみ成り立っているので、それらは分泌性タンパク質であることが推察された。そこで、それぞれの変異体を培養細胞に発現させるため、C末側にFLAGタグを付加させたプラスミドを構築した。6種のインテグリンα4変異体(1-1-2変異体,1-2-1変異体,7-3-2変異体,10-7-3変異体,10-7-2変異体,9-5-4変異体)の発現ベクター構築は以下のように行った。Jurkat細胞(ATCC、TIB-152)とRec-1細胞(ATCC、CRL-3004)cDNAをテンプレートとして使用し、α4-Nプライマーと各変異体に特異的な3’端のプライマーを用いてPCRを行った。使用した3’端プライマーを以下に示す。それぞれのプライマーには、発現解析の為のFLAGタグ配列を付加した。
ha4-1-1-2-FLAG-RVプライマー:5’-TTACTCTAGACTATTTATCGTCATCATCTTTGTAGTCATTACCTTCAAAGCCATCATT-3’(配列番号29);
ha4-1-2-1-FLAG-RVプライマー:5’-TCGTTCTAGACTATTTATCGTCATCATCTTTGTAGTCTGTCCTAGCTCTGTACTTGCT-3’(配列番号30);
ha4-7-3-2-FLAG-RVプライマー:5’-CCACTCTAGACTATTTATCGTCATCATCTTTGTAGTCATATTGTAGGGCATACCCACC-3’(配列番号31);
ha4-10-6-3-FLAG-RVプライマー:5’-TTGATCTAGACTATTTATCGTCATCATCTTTGTAGTCTGAGGAAAAGCTGAGAGAGTT-3’(配列番号32);
ha4-10-7-2-FLAG-RVプライマー:5’-CCCATCTAGACTATTTATCGTCATCATCTTTGTAGTCGAGACAACACTTCAAAAACCC-3’(配列番号33);
ha4-9-5-4-FLAG-RVプライマー:5’-CGTTTCTAGACTATTTATCGTCATCATCTTTGTAGTCCTTCAAAAACCCAATCTTTGC-3’(配列番号34)。PCR産物を制限酵素XhoI,XbaIで消化後、pcDNA3.1発現ベクター(Invitrogen)へ組み込み、シークエンスにより配列を確認した。
上清中のインテグリンα4変異体がインテグリンα4のリガンドと結合能を有しているかをリガンド固相ELISAにて検討した。インテグリンα4のリガンドであるヒトOPN RAA Nhalfタンパク質(Kon, S.,et al.,(2002)J.Cell.Biochem.,84:420-432)又はコントロールとしてBSAを10μg/mLで4℃一晩固相し、1% BSA/PBSでブロッキング後、実施例2で用いたものと同じ10倍濃縮した培養上清を添加した。1時間4℃で反応後、抗FLAG抗体(和光)と抗マウスIgG(株式会社免疫生物研究所)混合物を添加後、4℃で30分間反応させた。洗浄後、TMB液(DAKO)で発色させ結合能を解析した。
結果を図6に示す。9-5-4を除く全ての変異体がインテグリンα4のリガンドであるヒトOPN RAA Nhalfタンパク質との結合能を有していた。ウエスタンブロットの結果から、9-5-4変異体は結合能が無いのではなく、培養上清中への分泌量が少ないことが原因と推察される。
(1)抗1-2-1変異体抗体の作製
1-2-1変異体特異的アミノ酸配列であるGSISKYRART(配列番号15)を抗原としてウサギポリクローナル抗体を作製し、内在的な1-2-1変異体の発現解析を行った。具体的には、1-2-1変異体特異的アミノ酸配列であるGSISKYRART配列(配列番号15)にウシサイログロブリンをキャリア導入し、ウサギに免疫した。抗血清をGSISKYRARTペプチド(配列番号15)を結合させたチオールセファロースビーズ(GE)を用いて精製し、抗1-2-1変異体抗体を得た。
COS1細胞(ATCC、CRL-1650)における一過性のα4インテグリン変異体(1-2-1変異体)の過剰発現は、Lipofectamine2000(Invitrogen)を用いて実施例2において作成した1-2-1変異体の発現ベクターをCOS1細胞(ATCC、CRL-1650)に導入することにより行った。DMEM(血清無し)で2日間培養を続け、培養上清と細胞を回収した。培養上清は、Vivaspin(GE)にて10倍濃縮し、ウエスタンブロットに使用した。またJurkat細胞(ATCC、TIB-152)とRec-1細胞(ATCC、CRL-3004)をTIL培地(株式会社免疫生物研究所)で無血清培養し、3日後の培養上清をVivaspinで20倍濃縮し、ウエスタンブロットに使用した。
ウエスタンブロットは、SDS-PAGE後、immobilon-Pメンブレン(ミリポア)に転写した。全てのα4変異体にはFLAGタグがついているので、COS細胞におけるインテグリンα4変異体(1-2-1変異体)の発現は抗FLAG抗体(和光)にてブロットした。また、内在性インテグリンα4変異体(1-2-1変異体)の発現は上記方法により作製した抗1-2-1変異体抗体にてブロットした。発光・検出はECL-plus(パーキンエルマー)を使用した。
(1)GST融合1-2-1変異体タンパク質の作製
1-2-1変異体の機能を解析するため、GST融合タンパク質として大腸菌に発現させ、グルタチオンセファロースを用いた常法により精製を行った。インテグリンα4変異体(1-2-1変異体)タンパク質を大腸菌にて作製するため、pGEX6P-1(GE)へ1-2-1変異体を組み換えた。1-2-1のN末のシグナル配列を欠損させるように設計した5’端プライマー(5’-GAGGAATTCTACAACGTGGACACTGAGAG-3’:配列番号35)と3’端プライマー(5’-CGTCTCGAGTTATGTCCTAGCTCTGTACTTGC-3’:配列番号36)を用いて、1-2-1変異体発現ベクターをテンプレートにPCRを行った。PCR産物をEcoRIとXhoI制限酵素で消化後、pGEX6P-1ベクターにフレームがGST部と合致するように組み込んだ。配列はシークエンスにて確認した。本プラスミドを大腸菌に形質転換し、アンピシリンを含有するLB培地中、37℃で増殖させ、対数増殖期に20℃で1時間培養後、イソプロピル-β-チオガラクトピラノシド(IPTG)を最終濃度0.3mMになるように添加し、20℃で一晩後培養した。大腸菌を回収し、NETN150(20mM Tris-HCl(pH8.0),150mM NaCl,1mM EDTA,0.5%(v/v)NP-40)で懸濁後、超音波破砕機で大腸菌をソニケートした。遠心後の上清に、グルタチオンビーズ(GE)を添加し、4℃で一晩ローテートした。遠心によりビーズを回収しNETN100(20mM Tris-HCl(pH8.0),100mM NaCl,1mM EDTA,0.5%(v/v)NP-40)で3回洗浄後、溶出液(20mM還元型グルタチオン(Sigma),100mM Tris-HCl(pH8.8))で溶出させた。得られたGST融合1-2-1変異体タンパク質はPBSに対して透析後、プロテインアッセイキット(BioRad)にて定量した。
マウスα4インテグリン(本明細書において「mα4」という)発現ベクターは、mα4-Fwプライマー(5’-CGAGGATCCTGAATGTTCTCCACCAAGAGC-3’:配列番号37)とmα4-RVプライマー(5’-TTACTCGAGACGGGTCTTCTGAACAGGATT-3’:配列番号38)を用い、マウスメラノーマ細胞株B16-F10(ATCC、CRL-6475)をテンプレートとしてPCRを行い、PCR産物を制限酵素BamHIとXhoIで切断後、pcDNA3.1ベクター(Invitrogen)にクローニングを行って作製した。
マウスα9インテグリン(本明細書において「mα9」という)発現ベクターは、以下の方法により構築した。mα9-Fwプライマー (5’-GCTAAGCTTCTCTCGACTGTAGCCCATCG-3’:配列番号39)とmα9-RVプライマー(5’-CCATCTAGAGCAACTGCTGAGAGGAAACC-3’:配列番号40)を用い、マウス胎盤から作製したcDNAをテンプレートとしてPCRを行い、TOPOクローニングキット(Invitrogen)によりまずはクローニングを行った(mα9/TOPO)。シークエンスにてマウスα9インテグリン配列を確認後、FLAGタグを付加させたmα9インテグリン発現ベクターを作製するため、mα9-Fwプライマーとmα9-FLAG-RVプライマー(5’-CTGTCTAGATTACTTGTCATCGTCATCCTTGTAGTCCTGGTTTTTCTGGACCCAGTC-3’:配列番号41)を用いmα9/TOPOをテンプレートとしてPCRを行った。得られたPCR産物を制限酵素HindIIIとXbaIで切断後、pcDNA3.1ベクター(Invitrogen)へ組み込み作製した。
マウスα4インテグリンとα9インテグリンのそれぞれについて構築されたベクターはシークエンス法により配列確認を行った。CHO-K1細胞(ATCC,CCL-61)にlipofectamine2000(Invitrogen)を用いてそれぞれの遺伝子導入を行い、抗生物質として1mg/mL G418(PAA)を含んだDMEM、10% FCSにてセレクション後、限外希釈を行いシングルコロニー中のマウスα4インテグリン、マウスα9インテグリンの発現確認を行った。マウスα4インテグリンの発現は、抗マウスα4インテグリン抗体(R1-2)(Biolegend)によるフローサイトメトリー解析により行い、マウスα9インテグリンの発現は、抗FLAG抗体(和光)を用いたウエスタンブロットにより行い、最も高発現のクローンを細胞接着阻害活性試験に使用した。
得られた精製GST融合1-2-1変異体タンパク質(1-2-1/GST)を用いて、細胞接着阻害試験を行った。細胞接着試験に際し、種々の細胞外マトリックスタンパク質の機能部位ペプチド、具体的には次のペプチドをBSAに結合させたものを各種インテグリンリガンドとして用いた:5μg/mLのGRGDS(配列番号42)ペプチド(αvインテグリン等のRGD依存性インテグリンを介した細胞接着用ペプチド:ネガティブコントロール)、10μg/mLのSVVYGLR(配列番号20)ペプチド(OPNの機能ペプチドであり、インテグリンα4、インテグリンα9と結合することで細胞接着能を示す)、10μg/mLのQDHSFSIVIETVQ(配列番号21)ペプチド(pp-vWFの機能ペプチドであり、インテグリンα4、インテグリンα9と結合することで細胞接着能を示す)。
BSAをカップリングさせた細胞外マトリックスタンパク質の機能部位ペプチドを4℃で一晩放置し固相した。0.5%BSAを含むDMEM培地で1時間ブロッキング後、α4インテグリン、α9インテグリンを発現するCHO細胞と、1-2-1/GSTタンパク質(それぞれ、最終濃度、6.25μg/mL、12.5μg/mL、及び25μg/mL)の混合物を添加しCO2インキュベーター内で37℃で、1時間培養した。PBSで非接着細胞を除去し、0.5%のクリスタルバイオレットを含む20%メタノールで接着細胞を固定、染色させた。20%酢酸で転溶し595nmの吸光度をイムノリーダーで測定することで細胞接着阻害効果を検討した。
1-2-1/GSTタンパク質は、RGD依存性細胞接着には阻害能を全く有さないが、インテグリンα4、インテグリンα9と結合能を有するSVVYGLR(配列番号20)ペプチドやQDHSFSIVIETVQ(配列番号21)ペプチド依存性の細胞接着を濃度依存的に阻害することが分かった(図8)。すなわち、1-2-1/GSTタンパク質は、インテグリンα4、インテグリンα9を介する細胞接着を同時に阻害する機能を有することが分かった。また、同様にフィブロネクチン EIIIAについて接着阻害活性を測定した結果、1-2-1/GSTタンパク質は、インテグリンα4、インテグリンα9を介する細胞接着を同時に阻害する機能を有していた(非図示)。OPNは動脈硬化、心筋梗塞、癌転移、及び炎症性疾患に関与することが知られている。本発明のITG-α4変異体は、OPNとインテグリンα4及びインテグリンα9の両方を介する接着を阻害可能であることから、より効果的なこれらの疾患の治療薬となりうることが示された。また、pp-vWFは、血栓、血小板機能、炎症等に関与することが知られている。本発明のITGα4変異体は、pp-vWFとインテグリンα4及びインテグリンα9の両方を介する接着を阻害可能であることから、より効果的な炎症性疾患(特開2005-298336)等の治療剤となりうることが示された。更に。フィブロネクチン EIIIA(別名EDA)は、癌(Clin.Chim.Acta.(2006)372:83-93)に関与することが知られている。本発明のITGα4変異体は、フィブロネクチン EIIIAとインテグリンα4及びインテグリンα9の両方を介する接着を阻害可能であることから、より効果的な癌の治療薬又は癌転移抑制剤となりうることが示された。
EAEモデルを用いて、1-2-1/GSTタンパク質による疾患増悪抑制効果について検討を行った。EAEモデルは、PLP139-151ペプチド(配列:HSLGKWLGHPDKF:配列番号43)200μgとCFAのemulsionをSJL/Jマウス(日本チャールズリバー)の尾根部に皮下投与し、同日に百日咳毒素(ListBiological Laboratories)(400ng)を静脈内注射、さらに2日後にも百日咳毒素(400ng)を静脈内注射することにより発症させた。1-2-1/GSTタンパク質またはGSTタンパク質(ネガティブコントロール)50μgを、PLP139-151ペプチドを投与する前日に腹腔内に投与した。EAEの臨床スコアは次のようにして採点を行った。0.症状無し、1.尾の麻痺、2.運動失調、3.後肢の軽麻痺、4.後肢の麻痺、5.四肢麻痺及び尿失禁、6.瀕死、7.死亡。1-2-1/GSTタンパク質によるEAEの影響の検討のスケジュールを図9に示した。
Claims (17)
- ヒトインテグリンα4の細胞外領域の一部を有するインテグリンα4変異体。
- ヒトインテグリンα4の細胞外領域が、ヒトインテグリンα4のβ-propellorドメイン由来のアミノ酸配列を含んでいる請求項1に記載のペプチド。
- ヒトインテグリンα4の細胞外領域が、配列番号9及び配列番号11~14から選択される1の配列である、請求項1に記載のペプチド。
- 更に、配列番号15~19から選択される1の配列がヒトインテグリンα4(配列番号10)の細胞外領域のC末に結合していることを特徴とする請求項1~請求項3のいずれか1項に記載のペプチド。
- 配列番号4~9から選択される1の配列を有するペプチド。
- インテグリンα4のリガンドと結合し、かつ/又は、インテグリンα4とそのリガンドとの結合を阻害する請求項1~請求項5のいずれか1項に記載のペプチド。
- インテグリンα4のリガンドが、血管細胞接着分子1、フィブロネクチン、接合部接着分子2、粘膜アドレシン細胞接着分子1、ヒトリンパ球発現金属プロテイナーゼ様ディスインテグリン様富システインタンパク質ファミリーメンバーL、ヴォンウィルブランド因子及びオステオポンチンからなる群から選択される1の物質である請求項6に記載のペプチド。
- インテグリンα4のリガンドがヴォンウィルブランド因子又はOPNである請求項6に記載のペプチド。
- インテグリンα4のリガンドが配列番号20又は21のアミノ酸配列を有するペプチドである請求項6に記載のペプチド。
- 更にインテグリンα9のリガンドと結合し、かつ/又は、インテグリンα9とそのリガンドとの結合を阻害する請求項1~請求項9のいずれか1項に記載のペプチド。
- インテグリンα9のリガンドが、血管細胞接着分子1、フィブロネクチン、接合部接着分子2、粘膜アドレシン細胞接着分子1、ヒトリンパ球発現金属プロテイナーゼ様ディスインテグリン様富システインタンパク質ファミリーメンバーL、ヴォンウィルブランド因子及びオステオポンチンからなる群から選択される1の物質である請求項10に記載のペプチド。
- インテグリンα9のリガンドがヴォンウィルブランド因子又はOPNである請求項10に記載のペプチド。
- インテグリンα9のリガンドが配列番号20又は21のアミノ酸配列を有するペプチドである請求項10に記載のペプチド。
- 可溶性ペプチドである、請求項1~請求項13のいずれか1項に記載のペプチド。
- 請求項1~請求項14のいずれか1項に記載のペプチドを有効成分として含有する医薬組成物。
- 請求項1~請求項14のいずれか1項に記載のペプチドを特異的に認識する抗体。
- インテグリンα4を認識しない、請求項16に記載の抗体。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/129,817 US20140135483A1 (en) | 2011-06-30 | 2012-06-28 | Soluble integrin alpha-4 mutant |
| KR1020147001816A KR20140043795A (ko) | 2011-06-30 | 2012-06-28 | 가용성 인테그린 α4 변이체 |
| CA2840577A CA2840577A1 (en) | 2011-06-30 | 2012-06-28 | Soluble integrin .alpha.4 mutant |
| EP12803735.5A EP2727937A4 (en) | 2011-06-30 | 2012-06-28 | SOLUBLE INTEGRIN ALPHA-4 MUTANT |
| CN201280032210.8A CN103619874A (zh) | 2011-06-30 | 2012-06-28 | 可溶性整联蛋白α4突变体 |
| AU2012277185A AU2012277185A1 (en) | 2011-06-30 | 2012-06-28 | Soluble integrin alpha4 mutant |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011146164 | 2011-06-30 | ||
| JP2011-146164 | 2011-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013001819A1 true WO2013001819A1 (ja) | 2013-01-03 |
Family
ID=47423737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/004191 Ceased WO2013001819A1 (ja) | 2011-06-30 | 2012-06-28 | 可溶性インテグリンα4変異体 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20140135483A1 (ja) |
| EP (1) | EP2727937A4 (ja) |
| JP (1) | JPWO2013001819A1 (ja) |
| KR (1) | KR20140043795A (ja) |
| CN (1) | CN103619874A (ja) |
| AU (1) | AU2012277185A1 (ja) |
| CA (1) | CA2840577A1 (ja) |
| WO (1) | WO2013001819A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180306809A1 (en) * | 2015-11-06 | 2018-10-25 | Vetica Labs, Inc. | Methods of detecting markers for inflammatory conditions and food sensitivity in companion animals |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782172A (zh) | 2011-07-06 | 2014-05-07 | 雀巢产品技术援助有限公司 | 检测针对使用TNFα的生物疗法的中和性自体抗体的测定法 |
| EP3227683B1 (en) | 2014-12-05 | 2019-04-24 | Nestec S.A. | Indirect homogeneous mobility shift assays for the detection of biologics in patient samples |
| CN111197057B (zh) * | 2018-11-19 | 2024-04-19 | 中国科学院分子细胞科学卓越创新中心 | 调控免疫细胞迁移的组合物和方法 |
| WO2024249568A1 (en) | 2023-05-30 | 2024-12-05 | Paragon Therapeutics, Inc. | Alpha4beta7 integrin antibody compositions and methods of use |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125023A1 (en) | 1983-04-08 | 1984-11-14 | Genentech, Inc. | Recombinant immunoglobulin preparations, methods for their preparation, DNA sequences, expression vectors and recombinant host cells therefor |
| EP0546073A1 (en) | 1990-08-29 | 1993-06-16 | Genpharm Int | NON-HUMAN TRANSGENIC ANIMALS CAPABLE OF PRODUCING HETEROLOGOUS ANTIBODIES. |
| WO2000015247A2 (en) * | 1998-09-14 | 2000-03-23 | Board Of Regents, The University Of Texas System | Methods of treating multiple myeloma and myeloma-induced bone resorption using integrin antagonists |
| WO2000017394A1 (en) | 1998-09-19 | 2000-03-30 | Astrazeneca Ab | Polymorphisms in the human alpha4 integrin subunit gene, suitable for diagnosis and treatment of integrin ligand mediated diseases |
| WO2001043774A1 (en) | 1999-12-16 | 2001-06-21 | Biogen, Inc. | Methods of treating central nervous system ischemic or hemorrhagic injury using anti alpha4 integrin antagonists |
| US20040132642A1 (en) * | 2002-11-12 | 2004-07-08 | Government Of The U.S.A., Represented By The Secretary, Dept. Of Health & Human Services | Methods of inhibiting metastasis or growth of a tumor cell |
| JP2005298336A (ja) | 2002-01-29 | 2005-10-27 | Ajinomoto Co Inc | 炎症性疾患治療用薬剤 |
| WO2006075784A1 (ja) * | 2005-01-13 | 2006-07-20 | Gene Techno Science Co., Ltd. | 抗α9インテグリン抗体とその用途 |
| WO2006096807A1 (en) | 2005-03-08 | 2006-09-14 | Janssen Pharmaceutica N.V. | Aza-bridged-bicyclic amino acid derivatives as alpha 4 integrin antagonists |
| WO2006112738A1 (en) | 2005-04-19 | 2006-10-26 | Auckland Uniservices Limited | Novel peptides and methods for the treatment of inflammatory disorders |
| WO2008007804A1 (en) | 2006-07-12 | 2008-01-17 | Gene Techno Science Co., Ltd. | ANTIHUMAN α9 INTEGRIN ANTIBODY AND USE OF THE SAME |
| WO2008140602A2 (en) | 2006-12-07 | 2008-11-20 | The Govenment Of The Usa As Represented By The Secretary Of The Dept. Of Health And Human Services | USE OF ANTAGONISTS OF THE INTERACTION BETWEEN HIV GP120 AND α4β7 INTEGRIN |
| WO2010095270A1 (ja) * | 2009-02-23 | 2010-08-26 | 株式会社ジーンテクノサイエンス | 抗ヒトα9インテグリン抗体とその用途 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003294318A1 (en) * | 2002-11-15 | 2004-06-15 | Arizona Board Of Regents Arizona State University | Therapeutic bioconjugates |
| JP2007532681A (ja) * | 2004-04-16 | 2007-11-15 | ジェネンテック・インコーポレーテッド | B細胞の枯渇を増大させる方法 |
| WO2008103378A2 (en) * | 2007-02-20 | 2008-08-28 | Merrimack Pharmaceuticals, Inc. | Methods of treating multiple sclerosis by administration of alpha-fetoprotein in combination with an integrin antagonist |
| WO2009124056A2 (en) * | 2008-04-01 | 2009-10-08 | Merrimack Pharmaceuticals, Inc. | Alpha-fetoprotein for treating disease |
-
2012
- 2012-06-28 KR KR1020147001816A patent/KR20140043795A/ko not_active Withdrawn
- 2012-06-28 WO PCT/JP2012/004191 patent/WO2013001819A1/ja not_active Ceased
- 2012-06-28 EP EP12803735.5A patent/EP2727937A4/en not_active Withdrawn
- 2012-06-28 CA CA2840577A patent/CA2840577A1/en not_active Abandoned
- 2012-06-28 CN CN201280032210.8A patent/CN103619874A/zh active Pending
- 2012-06-28 US US14/129,817 patent/US20140135483A1/en not_active Abandoned
- 2012-06-28 JP JP2013522448A patent/JPWO2013001819A1/ja active Pending
- 2012-06-28 AU AU2012277185A patent/AU2012277185A1/en not_active Abandoned
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125023A1 (en) | 1983-04-08 | 1984-11-14 | Genentech, Inc. | Recombinant immunoglobulin preparations, methods for their preparation, DNA sequences, expression vectors and recombinant host cells therefor |
| EP0546073A1 (en) | 1990-08-29 | 1993-06-16 | Genpharm Int | NON-HUMAN TRANSGENIC ANIMALS CAPABLE OF PRODUCING HETEROLOGOUS ANTIBODIES. |
| WO2000015247A2 (en) * | 1998-09-14 | 2000-03-23 | Board Of Regents, The University Of Texas System | Methods of treating multiple myeloma and myeloma-induced bone resorption using integrin antagonists |
| WO2000017394A1 (en) | 1998-09-19 | 2000-03-30 | Astrazeneca Ab | Polymorphisms in the human alpha4 integrin subunit gene, suitable for diagnosis and treatment of integrin ligand mediated diseases |
| WO2001043774A1 (en) | 1999-12-16 | 2001-06-21 | Biogen, Inc. | Methods of treating central nervous system ischemic or hemorrhagic injury using anti alpha4 integrin antagonists |
| JP2003517023A (ja) * | 1999-12-16 | 2003-05-20 | バイオジェン インコーポレイテッド | 中枢神経系の虚血性損傷または出血性損傷を、抗α4インテグリンアンタゴニストを用いて処置する方法 |
| JP2005298336A (ja) | 2002-01-29 | 2005-10-27 | Ajinomoto Co Inc | 炎症性疾患治療用薬剤 |
| US20040132642A1 (en) * | 2002-11-12 | 2004-07-08 | Government Of The U.S.A., Represented By The Secretary, Dept. Of Health & Human Services | Methods of inhibiting metastasis or growth of a tumor cell |
| WO2006075784A1 (ja) * | 2005-01-13 | 2006-07-20 | Gene Techno Science Co., Ltd. | 抗α9インテグリン抗体とその用途 |
| WO2006096807A1 (en) | 2005-03-08 | 2006-09-14 | Janssen Pharmaceutica N.V. | Aza-bridged-bicyclic amino acid derivatives as alpha 4 integrin antagonists |
| WO2006112738A1 (en) | 2005-04-19 | 2006-10-26 | Auckland Uniservices Limited | Novel peptides and methods for the treatment of inflammatory disorders |
| WO2008007804A1 (en) | 2006-07-12 | 2008-01-17 | Gene Techno Science Co., Ltd. | ANTIHUMAN α9 INTEGRIN ANTIBODY AND USE OF THE SAME |
| WO2008140602A2 (en) | 2006-12-07 | 2008-11-20 | The Govenment Of The Usa As Represented By The Secretary Of The Dept. Of Health And Human Services | USE OF ANTAGONISTS OF THE INTERACTION BETWEEN HIV GP120 AND α4β7 INTEGRIN |
| WO2010095270A1 (ja) * | 2009-02-23 | 2010-08-26 | 株式会社ジーンテクノサイエンス | 抗ヒトα9インテグリン抗体とその用途 |
Non-Patent Citations (32)
| Title |
|---|
| "A Laboratory Manual, Second Edition,", 1989, COLD SPRING HARBOR LABORATORY PRESS, article "Molecular Cloning" |
| CANCER RES., vol. 70, 2010, pages 3042 - 51 |
| CHOTHIA; LESK, J. MOL. BIOL., vol. 196, 1987, pages 901 - 917 |
| CLARK M., IMMUNOL. TODAY., vol. 21, 2000, pages 397 - 402 |
| CLIN. CHIM. ACTA, vol. 372, 2006, pages 83 - 93 |
| EMBO J., vol. 24, 2005, pages 2885 - 95 |
| EXP CELL RES., vol. 315, 2009, pages 3312 - 24 |
| GALFRE, G.; MILSTEIN, C., METHODS ENZYMOL., vol. 73, 1981, pages 3 - 46 |
| GUERRERO-ESTEO M. ET AL.: "Role of two conserved glycine residues in the ss-propeller domain of the integrin a4 subunit in VLA-4 conformation and function", FEBS LETT., vol. 429, 1998, pages 123 - 128, XP055141613 * |
| HOLZMANN, B. ET AL., CURR. TOP. MICROBIOL. IMMUNOL., vol. 231, 1998, pages 125 - 141 |
| INTERNATIONAL IMMUNOLOGY MEETING |
| IRIE A. ET AL.: "Multiple loop structures critical for ligand binding of the integrin a4 subunit in the upper face of the ss-propeller mode 1", PROC. NATL. ACAD. SCI. USA, vol. 94, 1997, pages 7198 - 7203, XP055141611 * |
| ITO K. ET AL.: "The differential amino acid requirement within osteopontin in a4 and a9 integrin-mediated cell binding and migration", MATRIX BIOLOGY, vol. 28, 2009, pages 11 - 19, XP027487888 * |
| J CELL PHYSIOL., vol. 212, 2007, pages 368 - 74 |
| J CLIN INVEST, vol. 61, no. 6, June 1978 (1978-06-01), pages 1498 - 507 |
| JACKSON, D. Y., CURR., vol. 8, 2002, pages 1229 - 1253 |
| KABAT, E. ET AL.: "Sequences of Proteins of Immunological Interest", 1983, U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES |
| KANAYAMA, M. ET AL., J. IMMUNOL., vol. 182, 2009, pages 8015 - 8025 |
| KETTLEBOROUGH, C. A. ET AL., PROTEIN ENG., vol. 4, 1991, pages 773 - 783 |
| KON S. ET AL.: "Short form of a9 promotes a9ss1 integrin-dependent cell adhesion by modulating the function of the full-length a9 subunit", EXP. CELL RES., vol. 317, no. 12, 16 April 2011 (2011-04-16), pages 1774 - 1784, XP055141615 * |
| KON, S. ET AL., EXP. CELL. RES, vol. 317, 2011, pages 1774 - 84 |
| KON, S. ET AL., J. CELL. BIOCHEM., vol. 84, 2002, pages 420 - 432 |
| L. RIEOHMANN ET AL., NATURE, vol. 332, 1988, pages 323 |
| MORRISON, S. L. ET AL., PROC. NATL. ACAD. SCI. USA, vol. 81, 1984, pages 6851 - 6855 |
| NAT REV CANCER, vol. 8, 2008, pages 604 - 17 |
| OZAKI I. ET AL.: "Differential expression of laminin receptors in human hepatocellular carcinoma", GUT, vol. 43, 1998, pages 837 - 842, XP002305542 * |
| PALMER, E. L. ET AL., J. CELL. BIOL., vol. 123, 1993, pages 1289 - 1297 |
| PROC NATL ACAD SCI USA., vol. 94, 1997, pages 65 - 72 |
| ROBERTO GONZALEZ-AMARO ET AL., IMMUNOLOGY, vol. 116, 2005, pages 289 - 296 |
| ROY R. LOBB. ET AL., J. CLIN. INVEST., vol. 94, 1994, pages 1722 - 1728 |
| SCIENCE, vol. 294, 2001, pages 339 - 345 |
| TOMIZUKA ET AL., NATURE GENET., vol. 15, 1997, pages 146 - 156 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180306809A1 (en) * | 2015-11-06 | 2018-10-25 | Vetica Labs, Inc. | Methods of detecting markers for inflammatory conditions and food sensitivity in companion animals |
| US11099195B2 (en) * | 2015-11-06 | 2021-08-24 | Vetica Labs, Inc. | Methods of detecting markers for inflammatory conditions and food sensitivity in companion animals |
| US11099196B2 (en) | 2015-11-06 | 2021-08-24 | Vetica Labs, Inc. | Methods of detecting markers for inflammatory conditions and food sensitivity in companion animals |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140043795A (ko) | 2014-04-10 |
| EP2727937A1 (en) | 2014-05-07 |
| US20140135483A1 (en) | 2014-05-15 |
| CN103619874A (zh) | 2014-03-05 |
| AU2012277185A1 (en) | 2014-02-13 |
| CA2840577A1 (en) | 2013-01-03 |
| EP2727937A4 (en) | 2015-03-18 |
| JPWO2013001819A1 (ja) | 2015-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK2279412T3 (en) | PRESENT UNKNOWN COMPOSITIONS AND PROCEDURES FOR TREATING IMMUNRATED DISEASES | |
| US7737259B2 (en) | Compositions and methods for the treatment of diseases and disorders associated with cytokine signaling | |
| KR101695056B1 (ko) | 카드헤린-11의 ec1 도메인을 표적으로 하는 인간화 항체 및 관련 조성물 및 방법 | |
| CN101506239B (zh) | 抗人α9整联蛋白抗体及其用途 | |
| TR201808018T4 (tr) | Anti-B7-H3 antikoru. | |
| KR20140116525A (ko) | 항cxcr3 항체 | |
| EP2242769A2 (en) | Cadherin-11 ec1 domain antagonists for treating inflammatory joint disorders | |
| JP2003523207A (ja) | Liv−1関連タンパク質、それをコードするポリヌクレオチド、及び癌の治療へのその利用 | |
| JP4871740B2 (ja) | 抗α9インテグリン抗体とその用途 | |
| WO2013001819A1 (ja) | 可溶性インテグリンα4変異体 | |
| EP3286218B1 (en) | Agents binding specifically to human cadherin-17, human cadherin-5, human cadherin-6 and human cadherin-20 rgd motif | |
| RU2741802C2 (ru) | АНТИТЕЛО К Myl9 | |
| WO2013162748A1 (en) | Anti-tumor endothelial marker-1 (tem1) antibody variants and uses thereof | |
| JP2020533022A (ja) | ヒトトロンビン受容体par4に対する結合タンパク質 | |
| JP2008500004A (ja) | CD44vRAに対する抗体およびその使用方法 | |
| JP2023529557A (ja) | 抗enpp1抗体の阻害 | |
| AU2005299802A1 (en) | Duffy antigen receptor for chemokines and use thereof | |
| JP4059404B2 (ja) | 甲状腺機能を刺激する活性を持つ抗体 | |
| JPWO2005105144A1 (ja) | 潜在型TGF−βの活性化抑制剤 | |
| JP5687305B2 (ja) | 抗ヒトα9インテグリン抗体とその用途 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12803735 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2013522448 Country of ref document: JP Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 2840577 Country of ref document: CA |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14129817 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| REEP | Request for entry into the european phase |
Ref document number: 2012803735 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2012803735 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 20147001816 Country of ref document: KR Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 2012277185 Country of ref document: AU Date of ref document: 20120628 Kind code of ref document: A |