[go: up one dir, main page]

WO2014017599A1 - Novel t cell epitope peptide of japanese cypress pollen allergen - Google Patents

Novel t cell epitope peptide of japanese cypress pollen allergen Download PDF

Info

Publication number
WO2014017599A1
WO2014017599A1 PCT/JP2013/070219 JP2013070219W WO2014017599A1 WO 2014017599 A1 WO2014017599 A1 WO 2014017599A1 JP 2013070219 W JP2013070219 W JP 2013070219W WO 2014017599 A1 WO2014017599 A1 WO 2014017599A1
Authority
WO
WIPO (PCT)
Prior art keywords
peptide
seq
amino acid
cell
terminal side
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
Application number
PCT/JP2013/070219
Other languages
French (fr)
Japanese (ja)
Inventor
崇史 原田
年弘 長田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiho Pharmaceutical Co Ltd
Original Assignee
Taiho Pharmaceutical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taiho Pharmaceutical Co Ltd filed Critical Taiho Pharmaceutical Co Ltd
Priority to JP2014527008A priority Critical patent/JP5981549B2/en
Publication of WO2014017599A1 publication Critical patent/WO2014017599A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K39/35Allergens
    • A61K39/36Allergens from pollen
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00Drugs for immunological or allergic disorders
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00Drugs for immunological or allergic disorders
    • A61P37/08Antiallergic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705Receptors; Cell surface antigens; Cell surface determinants

Definitions

  • the present invention relates to a novel allergen protein T-cell epitope peptide derived from hinoki pollen and a composition for peptide immunotherapy against hinoki hay fever, comprising the peptide as an active ingredient.
  • the major problem with immunotherapy is the anaphylactic reaction.
  • the anaphylactic reaction is triggered by a chemical mediator that is released by binding of antigen-specific IgE antibody and antigen on mast cells.
  • Peptide immunotherapy using a T cell epitope is an immunotherapy that does not contain a portion that binds to an IgE antibody and contains a T cell epitope related to immune tolerance as an active ingredient.
  • feline, tick, cedar pollen, ragweed pollen Peptide immunotherapeutic agents using T cell epitopes identified from such antigens have been clinically applied (Non-patent Documents 1 and 2).
  • Non-patent Documents 1 and 2 In addition, regarding cypress pollen, T cell epitope peptides have been identified for Cha o1 and Cha o2, which are the main antigens (Patent Document 1, Non-Patent Documents 3 and 4).
  • the present invention relates to providing a novel cypress pollen allergen T cell epitope peptide different from known cypress pollen allergens in order to contribute to improving the efficacy of immunotherapy for cypress pollinosis, which is expected to increase in the future.
  • the present inventors have found a novel hinoki pollen allergen present in a large amount in cypress pollen and having allergen activity equal to or higher than Cha o1 and Cha o2, and has already filed a patent application (PCT / JP2012 / 052110). Further, T cell lines specific to the cypress pollen allergen were individually established from cedar pollinosis cypress pollen sensitized cases, and major T cell epitopes were determined from the T cell lines, thereby completing the present invention. That is, the present invention relates to the following 1) to 4).
  • the peptide according to 1) above, wherein the peptide in which 1 to 10 amino acids are deleted is a peptide in which the N-terminal side and / or C-terminal side amino acids of the peptide are deleted.
  • a peptide immunotherapeutic agent for cypress pollinosis containing one or more of the peptides described in any one of 1) to 3) as an active ingredient.
  • Peptide immunotherapy for cypress pollinosis in which one or more of the above-mentioned peptides 1 to 3 are administered.
  • the peptide group of the present invention is useful as an immunotherapeutic agent for hinoki hay fever alone or in combination. Furthermore, it is useful for cypress pollen-sensitized cases where the effect of immunotherapy using cedar pollen extract was insufficient by combining with known cypress pollen allergens, Cha o1 and Cha o2, T cell epitope peptides. Peptide immunotherapy is possible.
  • the T cell stimulating activity of each overlapping peptide is shown.
  • the binding ability of the peptide of the present invention to cypress pollen-specific IgE is shown.
  • the T cell stimulation activity of a shortened peptide (peptide number: # 52) is shown.
  • the T cell stimulation activity of a shortened peptide (peptide number: # 24) is shown.
  • the T cell stimulation activity of a shortened peptide (peptide number: # 38) is shown.
  • the amino acid sequence in this specification is described by one-letter code.
  • the peptide consisting of the amino acid sequence shown by SEQ ID NO: 3 to 16 of the present invention is a cypress pollen allergen protein consisting of the amino acid sequence shown by SEQ ID NO: 1, or its isoform (the second amino acid in the amino acid sequence shown by SEQ ID NO: 1). Pro is replaced with Thr, 230th Val is replaced with Ile, and 271nd Val is replaced with Ile).
  • N-terminal which is a signal peptide from the primary structure of the protein consisting of the amino acid sequence shown in SEQ ID NO: 2 Is a partial peptide consisting of 20 amino acid residues (partially 18 amino acid residues) of a protein consisting of all 528 amino acids from N-terminal Leu to C-terminal Leu.
  • SEQ ID NO: 3 (peptide number: # 12): 111 of SEQ ID NO: 1 ⁇ 130th
  • SEQ ID NO: 4 (peptide number: # 13): 121-140th of SEQ ID NO: 1
  • SEQ ID NO: 5 (peptide number: # 20): 191st to 210th of SEQ ID NO: 1
  • SEQ ID NO: 6 (peptide number) : # 21): 201 to 220 of SEQ ID NO: 1
  • SEQ ID NO: 7 (peptide number: # 24): 231 to 250 of SEQ ID NO: 1
  • SEQ ID NO: 8 (peptide number: # 31): 301 of SEQ ID NO: 1 320th
  • SEQ ID NO: 9 (peptide number: # 37): 361 to 380th of SEQ ID NO: 1
  • SEQ ID NO: 10 (peptide number: # 38): 371 to
  • the peptide of the present invention individually establishes a T cell line specific to the cypress pollen allergen protein consisting of the amino acid sequence represented by SEQ ID NO: 1 from the cedar pollinosis cypress pollen sensitized case, It was identified as a T cell epitope by evaluating the proliferation activity against 57 overlapping peptides of 20 residues covering the entire primary structure of the isoform (see Examples 2 to 4). Therefore, the peptide of the present invention has at least one T cell epitope, and the peptide of the present invention has T cell stimulating activity.
  • the T cell stimulating activity refers to an activity for inducing a T cell response such as T cell proliferation or lymphokine secretion, and means an action capable of inducing immune tolerance of T cells by administration to humans or animals.
  • the T cell stimulating activity can be determined, for example, by measuring [ 3 H] thymidine incorporation into cells and calculating the stimulation coefficient.
  • the stimulation factor (SI value) of the T cell response used here is the cpm of the radioactivity of [ 3 H] thymidine incorporated into the cell in the presence of the peptide, as the cpm in the absence of the peptide (control). Calculate as divided.
  • the peptides of the present invention have an average S.P. I. The value is 2.0 or more.
  • the “importance index” obtained by multiplying the value by the appearance frequency (%) of a patient exhibiting a T cell response to the peptide is at least 70 or more, and as such a peptide, SEQ ID NO: 4 (peptide number: # 13), SEQ ID NO: 5 (peptide number: # 20), SEQ ID NO: 7 (peptide number: # 24), SEQ ID NO: 8 (peptide number: # 31), SEQ ID NO: 10 (peptide number: # 38), SEQ ID NO: 11 (Peptide number: # 39), the peptide which consists of an amino acid sequence shown by sequence number 12 (peptide number: # 41) and sequence number 15 (peptide number: # 52) is mentioned.
  • Such peptides do not bind to IgE antibodies specific to cedar pollen and cypress pollen allergens and do not cause anaphylaxis, and therefore can induce immune tolerance against T cells specific to cypress pollen allergens. It is particularly suitable as an immunotherapeutic agent that can be used.
  • the peptide from which 1 to 10 amino acids have been deleted includes, for example, a peptide from which the N-terminal and / or C-terminal amino acids have been deleted.
  • the amino acid residues 1-3 on the N-terminal side and / or the amino acid residues 1-6 on the C-terminal side are missing.
  • a peptide having at least “FKEKIVIEGGHW” and a peptide consisting of the amino acid sequence represented by SEQ ID NO: 10 (# 38) 6 to 8 amino acids on the N-terminal side and / or 1 amino acid residue on the C-terminal side Is a peptide having at least “PYYQIIYHPAS” and a peptide consisting of the amino acid sequence represented by SEQ ID NO: 15 (# 52), amino acid 1 to 2 residues on the N-terminal side and / or amino acid 1 on the C-terminal side Peptides lacking ⁇ 7 residues and having at least “FKVITTNKQ”.
  • the peptide to which 1 to 10 amino acids are added includes a peptide to which 1 to 10 amino acids are added to the N-terminal side and / or the C-terminal side.
  • the added amino acid residues include In the amino acid sequence represented by SEQ ID NO: 1 or 2, examples include 1 to 10 amino acid residues adjacent to the N-terminal side or C-terminal side of the amino acid sequence corresponding to the peptide.
  • “having T cell stimulating activity” herein means having T cell stimulating activity equal to or higher than that of the peptide consisting of the amino acid sequences shown in SEQ ID NOs: 3 to 16. The meaning of the T cell stimulating activity is as described above.
  • the T cell epitope peptide of the present invention can be synthesized by solid phase synthesis, liquid phase synthesis, or a peptide synthesis method combining these, which is used for general peptide synthesis.
  • T cell epitope peptide of the present invention is synthesized by recombinant DNA technology, host cells transformed with a nucleic acid having a sequence encoding the peptide are cultured in a medium suitable for the cells, and the culture supernatant is obtained.
  • the host cell can be synthesized using techniques known to those skilled in the art.
  • Escherichia coli, yeast, mammalian cells and the like can be used.
  • T cell epitope peptide of the present invention can modulate an allergic response to an individual's allergen when administered to a human, preferably when administered to an individual sensitized to cypress pollen allergen Useful for.
  • the T-cell epitope peptides of other cypress pollen allergens Cha o1 and Cha o2
  • the T-cell epitope peptides of Cry j1 and Cry j2 which are cedar pollen allergens (JP-A-7-118295, JP-A-8- 47392, Sone, T. et al., J. Immunol., 161: 448-457, 1998), useful for peptide immunotherapy for spring tree hay fever patients represented by Sugi and Hinoki It is.
  • the cypress pollinosis peptide immunotherapeutic agent of the present invention can be administered by a normal administration route such as injection (subcutaneous, intravenous injection, etc.), eye drop, nasal drop, oral, inhalation, transdermal, etc. Tablets, capsules, granules, powders, troches, sublingual tablets, syrups, injections, suppositories, inhalants, transdermal absorption agents, eye drops, nasal drops, intranasal sprays, poultices, It can be prepared as preparations of various dosage forms such as cataplasms, ointments, lotions and creams.
  • the T cell epitope peptide of the present invention is used as it is or dried to form a powder, and a carrier such as a diluent and an additive, such as a stabilizer, an excipient, a solubilizing agent, an emulsifying agent, a buffer, It is preferably prepared as a compounding agent to which a soothing agent, a preservative, a coloring agent and the like are added by a conventional method.
  • a carrier such as a diluent and an additive, such as a stabilizer, an excipient, a solubilizing agent, an emulsifying agent, a buffer, It is preferably prepared as a compounding agent to which a soothing agent, a preservative, a coloring agent and the like are added by a conventional method.
  • the dosage of the cypress pollinosis peptide immunotherapeutic agent of the present invention can be, for example, by injection, about 1 ⁇ g to 30 mg, preferably 20 ⁇ g to 10 mg of the peptide of the present invention per dosage unit.
  • Example 1 Purification of cypress pollen allergen protein 1000 ml of extraction buffer (25 mM Tris buffer, pH 8.0) was added to 50 g of cypress pollen and stirred for 10 minutes, followed by sonication for 15 minutes. The obtained suspension was centrifuged (3,000 rpm, 15 minutes) to obtain a supernatant, which was filtered to obtain an extract. This extract was added to a DE52 anion exchange column equilibrated with 10 mM Tris buffer (pH 8.0), and non-adsorbed fractions were collected.
  • extraction buffer 25 mM Tris buffer, pH 8.0
  • Example 2 Synthesis of Overlapping Peptides Overlapping peptides were synthesized under commission by the PepTrack Peptide Library service (JPT Peptide Technologies). Based on the primary structure of the cypress pollen allergen protein (hereinafter referred to as “Protein X”) (SEQ ID NO: 1) obtained in Example 1, starting from the N-terminal first Leu to the C-terminal Leu, 10 52 types of overlapping peptides (# 1 to # 52) containing 20 overlapping residues (18 residues for # 52 (SEQ ID NO: 52)) were synthesized (Tables 1-2).
  • Protein X the primary structure of the cypress pollen allergen protein
  • Example 3 Establishment of a novel cypress pollen-specific T cell line Lymphocytes were isolated from the peripheral blood of 20 patients sensitized to cypress pollen due to cedar pollinosis by the commonly used Ficoll-paque specific gravity centrifugation method, A portion was stored in liquid nitrogen.
  • Peripheral blood lymphocytes (1.2 ⁇ 10 7 cells) were suspended in RPMI-1640 supplemented with 6 ml of autologous plasma 10% and cultured for 7-8 days on a 24-well culture plate with Protein X purified from cypress pollen. did.
  • T cells activated by antigen stimulation were confirmed under a microscope, 20 Unit / ml IL-2 was added and cultured overnight. From the next day, the culture medium was changed daily with RPMI-1640 supplemented with 20 Unit / ml IL-2, 10% autologous plasma, and cultured for 10-12 days as a T cell line for T cell epitope identification. did.
  • T cell lines established from 20 hay fever patients were cultured with each synthesized overlapping peptide, and Protein X specific T cell epitope peptide was identified. That is, peripheral blood mononuclear cells frozen and stocked from the same patient as the T cell line were thawed as antigen-presenting cells, X-irradiated (36 Gy), and suspended in RPMI-1640 supplemented with 10% autologous plasma. The antigen-presenting cells were seeded in a 96-well flat bottom plate (1 ⁇ 10 5 cells / well), and then Protein X (final concentration 10 ⁇ g / ml) or each peptide (final concentration 2 ⁇ M) was added to each well.
  • a T cell line (2 ⁇ 10 4 cells / well) suspended in RPMI-1640 supplemented with 10% autologous plasma was seeded in each well, and after culturing at 37 ° C. and 5% CO 2 for 48 hours, 1 ⁇ Ci [ 3 H] thymidine was added to the wells and incubated for another 16 hours.
  • the cells were collected on a glass filter using a harvester, dried, and the radioactivity (cpm) of [ 3 H] thymidine incorporated into the cells was measured with a top count (manufactured by PerkinElmer).
  • FIG. 1 shows the “average SI value” (average value of 20 SI values) and “appearance frequency (%)” of all overlapping peptides (the SI values in 20 people are the same). 2) and “importance index” (a value obtained by multiplying the average SI value and the appearance frequency).
  • Example 5 Confirmation of binding ability to cypress pollen-specific IgE Binding ability to cypress pollen-specific IgE was confirmed using 5 cypress pollinosis patient sera.
  • a preferred T cell epitope peptide (importance index of 100 or more) or cypress pollen allergen of the present invention is added to a Maxisorp 96-well plate (Nunk) at 1 ⁇ g / 50 ⁇ L / well, and then allowed to stand overnight at 4 ° C. To be solid-phased. On the next day, after washing the plate, blocking was performed by adding PBS containing 1% bovine serum albumin and allowing to stand at room temperature for 1 hour.
  • patient serum or negative control serum diluted 5-fold was added and allowed to stand at room temperature for 2 hours.
  • a secondary antibody HRP-labeled goat anti-human IgE antibody, Novus
  • PBS containing 1% bovine serum albumin PBS containing 1% bovine serum albumin was added, and left at room temperature for 40 minutes.
  • TMB color development was performed at room temperature in a TMB Substrate Reagent Set (BD Biosciences) for 20 minutes in a light-shielded state.
  • V012, V014, V031, V047, and V051 indicate five cypress pollinosis patient IDs, respectively. It was confirmed that the T cell epitope peptide of the present invention does not bind to cypress pollen-specific IgE.
  • Example 6 Establishment of 20-mer epitope-specific T cell line Lymphocytes were isolated from the peripheral blood of a patient sensitized to Japanese cypress pollen in Japanese cedar pollinosis by a commonly used Ficoll-paque specific gravity centrifugation method Stored in liquid nitrogen. Peripheral blood lymphocytes are suspended in RPMI-1640 supplemented with 10% autologous plasma and cultured in 96-well culture plates (1.5 ⁇ 10 5 cells / well) for 7-8 days with 20-mer epitope peptide at a final concentration of 1 ⁇ M. did. In parallel, antigen-presenting cells necessary for passage were prepared on the 6th to 7th days of culture as follows.
  • peripheral blood mononuclear cells frozen from the same patient were put to sleep, suspended in RPMI-1640 medium supplemented with 10% autologous plasma, and then added to a 20-mer epitope peptide with a final concentration of 10 ⁇ M on a 24-well culture plate. Incubated overnight. On the next day, the cells were subjected to X-ray irradiation (45 Gy), and the 20-mer epitope peptide in the medium was washed and removed, and used as antigen-presenting cells for passage.
  • lymphocyte culture On day 7 to 8 of lymphocyte culture, 1/3 of each well of lymphocytes inoculated in a 96-well culture plate was treated with human IL-2 at a final concentration of 100 Unit / ml and human at a final concentration of 50 ng / ml. The cells were cultured for 7 days on a 96-well culture plate with antigen-presenting cells for passage suspended in RPMI-1640 medium supplemented with IL-4 and 10% autologous plasma. The remaining 2/3 of each lymphocyte well was used for evaluation of antigen specificity.
  • lymphocytes cultured for 7 days with IL-2, IL-4, and passage antigen-presenting cells all the lymphocytes of wells determined to be positive for 20-mer epitope peptide-specific T cells were collected, and a final concentration of 100 Unit / ml human Suspended in RPMI-1640 medium supplemented with IL-2, human IL-4 at a final concentration of 50 ng / ml and 10% autologous plasma, together with antigen-presenting cells for passage prepared as described above, in a 24-well culture plate for 7 days The culture was expanded. Thereafter, expansion culture was continued with the antigen-presenting cells for passage every 7 days, and a cell population showing 20-mer epitope peptide-specific cell proliferation was defined as a 20-mer epitope peptide-specific T cell line.
  • Example 7 Estimation of Epitope Core Sequence Peptides (# 52-1 to # 52-8, # 24-1 to # 24-8, # 38-1) with one amino acid residue deleted from the C-terminus of epitope 20mer ⁇ # 24-3), peptides in which one amino acid residue is deleted from the N-terminal (# 52-9 to # 52-13, # 24-9 to # 24-13), and 6 to 9 from the N-terminal Peptides (# 38-4 to # 24-7) lacking amino acid residues were synthesized.
  • the established 20-mer epitope peptide-specific T cell line was cultured together with the shortened peptide to estimate the epitope core sequence.
  • peripheral blood mononuclear cells frozen and stocked from the same patient as the T cell line were thawed as antigen-presenting cells, X-ray irradiated (45 Gy), and suspended in RPMI-1640 supplemented with 10% autologous plasma.
  • the antigen-presenting cells were seeded on a 96-well flat bottom plate (1 ⁇ 10 5 cells / well), and then 20mer peptide or each shortened peptide (final concentration 2 ⁇ M) was added to each well.
  • a T cell line (2 ⁇ 10 4 cells / well) suspended in RPMI-1640 supplemented with 10% autologous plasma was seeded in each well, and after culturing at 37 ° C.
  • the core sequence was determined by determining both ends based on the minimum sequence that showed T cell proliferation activity with a shortened peptide lacking the N-terminus and C-terminus (SI value of 2 or more).
  • the core sequence in the # 24 epitope peptide, # 38 epitope peptide and # 52 epitope peptide that can be estimated by the above method is the 4th to 14th “FKEKIVYEGHW”, and the # 38 epitope peptide In the peptide (SEQ ID NO: 10), it is the 9th to 19th “PYYQIIYHPAS”, and in the # 52 epitope peptide (SEQ ID NO: 15), it is the 3rd to 11th “FKVITTNNKQ”.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Immunology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Cell Biology (AREA)
  • Molecular Biology (AREA)
  • Zoology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Genetics & Genomics (AREA)
  • Toxicology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Pulmonology (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Epidemiology (AREA)
  • Peptides Or Proteins (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Description

新規ヒノキ花粉アレルゲンのT細胞エピトープペプチドNovel cypress pollen allergen T cell epitope peptide

 本発明は、ヒノキ花粉に由来する新規なアレルゲンタンパク質のT細胞エピトープペプチド、及び当該ペプチドを有効成分とする、ヒノキ花粉症に対するペプチド免疫療法用組成物に関する。 The present invention relates to a novel allergen protein T-cell epitope peptide derived from hinoki pollen and a composition for peptide immunotherapy against hinoki hay fever, comprising the peptide as an active ingredient.

 ヒノキ花粉の飛散量は昭和40年代にはわずかであったが、その後の20年ほどの間に3倍以上に増えた。スギの植林は昭和20年代に集中的に行われ、昭和40年代後半には花粉を飛ばし始める壮年期を迎えた。ヒノキはスギ植林の後の昭和30年代に集中的に植林され、スギに遅れて壮年期を迎えたところである。近年の比較では、ヒノキの植生数がスギの植生数に匹敵しつつあり、今後はヒノキ花粉症が増えてくるものと予想されることから、ヒノキ花粉特有の抗原を用いた免疫療法の必要性が指摘されている。 The amount of cypress pollen scattered was slight in the 1940s, but increased more than three times over the next 20 years. Cedar tree planting was intensively carried out in the Showa 20s, and in the latter half of the Showa 40s, it reached a golden age when pollen began to fly. Cypress trees were planted intensively in the Showa 30s after planting cedar trees, and have reached the middle age after cedar trees. In recent years, the number of cypress vegetation is comparable to the number of cedar vegetation, and it is expected that cypress pollinosis will increase in the future. Therefore, the need for immunotherapy using cypress pollen-specific antigens is necessary. Has been pointed out.

 免疫療法の大きな問題点はアナフィラキシー反応である。アナフィラキシー反応は抗原特異的IgE抗体と抗原がマスト細胞上で結合することにより放出されるケミカルメディエーターによって引き起こされる。T細胞エピトープを用いたペプチド免疫療法は、IgE抗体に結合する部分を含まず、免疫寛容に関わるT細胞エピトープを有効成分とする免疫療法であり、いままでにネコ、ダニ、スギ花粉、ブタクサ花粉などの抗原から同定されたT細胞エピトープを用いたペプチド免疫療法剤が臨床応用されてきた(非特許文献1及び2)。また、ヒノキ花粉に関しても、主要抗原であるCha o1とCha o2について、T細胞エピトープペプチドが同定されている(特許文献1、非特許文献3及び4)。 The major problem with immunotherapy is the anaphylactic reaction. The anaphylactic reaction is triggered by a chemical mediator that is released by binding of antigen-specific IgE antibody and antigen on mast cells. Peptide immunotherapy using a T cell epitope is an immunotherapy that does not contain a portion that binds to an IgE antibody and contains a T cell epitope related to immune tolerance as an active ingredient. To date, feline, tick, cedar pollen, ragweed pollen Peptide immunotherapeutic agents using T cell epitopes identified from such antigens have been clinically applied (Non-patent Documents 1 and 2). In addition, regarding cypress pollen, T cell epitope peptides have been identified for Cha o1 and Cha o2, which are the main antigens (Patent Document 1, Non-Patent Documents 3 and 4).

特開2008-195718号公報JP 2008-195718 A

Valenta R. et al., Annu. Rev. Immunol., 2010:211-241, 2010Valenta R. et al., Annu. Rev. Immunol., 2010: 211-241, 2010 Casale T. et al., J. Allergy Clin. Immunol., 127:8-15, 2011Casale T. et al., J. Allergy Clin. Immunol., 127: 8-15, 2011 Sone, T. et al., Clin. Exp. Allergy, 35:664-671, 2005Sone, T. et al., Clin. Exp. Allergy,: 35: 664-671,6712005 Sone, T. et al., Allergol. Int., 58:237-245, 2009Sone, T. et al., Allergol. Int., 58: 237-245, 2009

 本発明は、今後増加すると考えられるヒノキ花粉症に対する免疫療法の有効性向上に貢献すべく、既知のヒノキ花粉アレルゲンとは異なる新規なヒノキ花粉アレルゲンのT細胞エピトープペプチドを提供することに関する。 The present invention relates to providing a novel cypress pollen allergen T cell epitope peptide different from known cypress pollen allergens in order to contribute to improving the efficacy of immunotherapy for cypress pollinosis, which is expected to increase in the future.

 本発明者らは、ヒノキ花粉の中に多量に存在し、Cha o1やCha o2と同等以上のアレルゲン活性を有する新規ヒノキ花粉アレルゲンを見出し、既に特許出願を行った(PCT/JP2012/052110)。そして、更にスギ花粉症のヒノキ花粉感作症例より、当該ヒノキ花粉アレルゲンに特異的なT細胞ラインを個別に樹立し、その中から主要なT細胞エピトープを決定し、本発明を完成した。
 すなわち、本発明は、以下の1)~4)に係るものである。
 1)配列番号3~16で示されるアミノ酸配列からなる群より選ばれるペプチド、又は当該ペプチドにおいて1~3個のアミノ酸が置換及び/又は1~10個のアミノ酸が欠失若しくは付加したペプチドであって、且つT細胞刺激活性を有するペプチド。
 2)1~10個のアミノ酸が欠失したペプチドが、当該ペプチドのN末端側及び/又はC末端側のアミノ酸が欠失したものである、上記1)のペプチド。
 3)配列番号7で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「FKEKIVYEGHW」を有するペプチド、配列番号10で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「PYYQIIYHPAS」を有するペプチド、又は配列番号15で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「FKVITTNKQ」を有するペプチドである、上記2)のペプチド。
 4)上記1)~3)のいずれかに記載されたペプチドの1種又は2種以上を有効成分として含有する、ヒノキ花粉症のペプチド免疫療法剤。
 5)ヒノキ花粉症のペプチド免疫療法剤を製造するための、上記1~3のペプチドの1種又は2種以上の使用。
 6)ヒノキ花粉症のペプチド免疫療法に使用するための、上記1~3のペプチドの1種又は2種以上。
 7)上記1~3のペプチドの1種又は2種以上を投与するヒノキ花粉症のペプチド免疫療法。
The present inventors have found a novel hinoki pollen allergen present in a large amount in cypress pollen and having allergen activity equal to or higher than Cha o1 and Cha o2, and has already filed a patent application (PCT / JP2012 / 052110). Further, T cell lines specific to the cypress pollen allergen were individually established from cedar pollinosis cypress pollen sensitized cases, and major T cell epitopes were determined from the T cell lines, thereby completing the present invention.
That is, the present invention relates to the following 1) to 4).
1) A peptide selected from the group consisting of the amino acid sequences represented by SEQ ID NOs: 3 to 16, or a peptide in which 1 to 3 amino acids are substituted and / or 1 to 10 amino acids are deleted or added in the peptide And a peptide having T cell stimulating activity.
2) The peptide according to 1) above, wherein the peptide in which 1 to 10 amino acids are deleted is a peptide in which the N-terminal side and / or C-terminal side amino acids of the peptide are deleted.
3) A peptide having the amino acid sequence represented by SEQ ID NO: 7 and lacking the amino acid at the N-terminal side and / or C-terminal side thereof and having at least “FKEKIVEYGHW”, a peptide comprising the amino acid sequence represented by SEQ ID NO: 10 N-terminal and / or C-terminal amino acids are deleted, and at least the peptide having “PYYQIIYHPAS” or the amino acid sequence shown by SEQ ID NO: 15 lacks the N-terminal and / or C-terminal amino acids. The peptide according to 2) above, which is a peptide having at least “FKVITTNKQ”.
4) A peptide immunotherapeutic agent for cypress pollinosis containing one or more of the peptides described in any one of 1) to 3) as an active ingredient.
5) Use of one or more of the aforementioned peptides 1 to 3 for producing a peptide immunotherapeutic agent for cypress pollinosis.
6) One or more of the aforementioned peptides 1 to 3 for use in peptide immunotherapy for cypress pollinosis.
7) Peptide immunotherapy for cypress pollinosis in which one or more of the above-mentioned peptides 1 to 3 are administered.

 本発明のペプチド群は、単独で又は複数組み合わせることによりヒノキ花粉症に対する免疫療法剤として有用である。さらに、既知のヒノキ花粉アレルゲンであるCha o1やCha o2のT細胞エピトープペプチドと組み合わせることによって、スギ花粉エキスを用いた免疫療法で効果が不十分であったヒノキ花粉感作症例に対して、有用なペプチド免疫療法が可能となる。 The peptide group of the present invention is useful as an immunotherapeutic agent for hinoki hay fever alone or in combination. Furthermore, it is useful for cypress pollen-sensitized cases where the effect of immunotherapy using cedar pollen extract was insufficient by combining with known cypress pollen allergens, Cha o1 and Cha o2, T cell epitope peptides. Peptide immunotherapy is possible.

各オーバーラップペプチドのT細胞刺激活性を示す。The T cell stimulating activity of each overlapping peptide is shown. 本発明ペプチドのヒノキ花粉特異的IgEとの結合能を示す。The binding ability of the peptide of the present invention to cypress pollen-specific IgE is shown. 短縮ペプチド(ペプチド番号:#52)のT細胞刺激活性を示す。The T cell stimulation activity of a shortened peptide (peptide number: # 52) is shown. 短縮ペプチド(ペプチド番号:#24)のT細胞刺激活性を示す。The T cell stimulation activity of a shortened peptide (peptide number: # 24) is shown. 短縮ペプチド(ペプチド番号:#38)のT細胞刺激活性を示す。The T cell stimulation activity of a shortened peptide (peptide number: # 38) is shown.

 以下、本発明を詳細に説明する。なお、本明細書中のアミノ酸配列は、1文字表記で記載している。
 本発明の配列番号3~16で示されるアミノ酸配列からなるペプチドは、配列番号1で示されるアミノ酸配列からなるヒノキ花粉アレルゲンタンパク質、又はそのアイソフォーム(配列番号1で示されるアミノ酸配列において、2番目のProがThrに、230番目のValがIleに、271番目のValがIleにそれぞれ置換)である配列番号2で示されるアミノ酸配列からなるタンパク質の一次構造よりシグナルペプチドであるN末端から28アミノ酸を除いた、N末端LeuよりC末端Leuに至る全528アミノ酸からなるタンパク質の、20アミノ酸残基(一部18アミノ酸残基)からなる部分ペプチドである。本発明の各ペプチドの配列番号1又は2で示されるアミノ酸配列上の位置は、後記表1~3に示すとおりであり、すなわち、配列番号3(ペプチド番号:#12):配列番号1の111~130番目、配列番号4(ペプチド番号:#13):配列番号1の121~140番目、配列番号5(ペプチド番号:#20):配列番号1の191~210番目、配列番号6(ペプチド番号:#21):配列番号1の201~220番目、配列番号7(ペプチド番号:#24):配列番号1の231~250番目、配列番号8(ペプチド番号:#31):配列番号1の301~320番目、配列番号9(ペプチド番号:#37):配列番号1の361~380番目、配列番号10(ペプチド番号:#38):配列番号1の371~390番目、配列番号11(ペプチド番号:#39):配列番号1の381~400番目、配列番号12(ペプチド番号:#41):配列番号1の401~420番目、配列番号13(ペプチド番号:#42):配列番号1の411~430番目、配列番号14(ペプチド番号:#49):配列番号1の481~500番目、配列番号15(ペプチド番号:#52):配列番号1の511~528番目、配列番号16(ペプチド番号:#56):配列番号2の261~280番目である。
Hereinafter, the present invention will be described in detail. In addition, the amino acid sequence in this specification is described by one-letter code.
The peptide consisting of the amino acid sequence shown by SEQ ID NO: 3 to 16 of the present invention is a cypress pollen allergen protein consisting of the amino acid sequence shown by SEQ ID NO: 1, or its isoform (the second amino acid in the amino acid sequence shown by SEQ ID NO: 1). Pro is replaced with Thr, 230th Val is replaced with Ile, and 271nd Val is replaced with Ile). 28 amino acids from the N-terminal which is a signal peptide from the primary structure of the protein consisting of the amino acid sequence shown in SEQ ID NO: 2 Is a partial peptide consisting of 20 amino acid residues (partially 18 amino acid residues) of a protein consisting of all 528 amino acids from N-terminal Leu to C-terminal Leu. The positions on the amino acid sequence represented by SEQ ID NO: 1 or 2 of each peptide of the present invention are as shown in Tables 1 to 3 below, that is, SEQ ID NO: 3 (peptide number: # 12): 111 of SEQ ID NO: 1 ~ 130th, SEQ ID NO: 4 (peptide number: # 13): 121-140th of SEQ ID NO: 1, SEQ ID NO: 5 (peptide number: # 20): 191st to 210th of SEQ ID NO: 1, SEQ ID NO: 6 (peptide number) : # 21): 201 to 220 of SEQ ID NO: 1, SEQ ID NO: 7 (peptide number: # 24): 231 to 250 of SEQ ID NO: 1, SEQ ID NO: 8 (peptide number: # 31): 301 of SEQ ID NO: 1 320th, SEQ ID NO: 9 (peptide number: # 37): 361 to 380th of SEQ ID NO: 1, SEQ ID NO: 10 (peptide number: # 38): 371 to 390th of SEQ ID NO: 1, SEQ ID NO: 1 (peptide number: # 39): 381-400th of SEQ ID NO: 1, SEQ ID NO: 12 (peptide number: # 41): 401-420th of SEQ ID NO: 1, SEQ ID NO: 13 (peptide number: # 42): sequence 411 to 430 of SEQ ID NO: 1, SEQ ID NO: 14 (peptide number: # 49): 481 to 500 of SEQ ID NO: 1, SEQ ID NO: 15 (peptide number: # 52): 511 to 528 of SEQ ID NO: 1, SEQ ID NO: 16 (peptide number: # 56): positions 261 to 280 of SEQ ID NO: 2.

 本発明の上記ペプチドは、スギ花粉症のヒノキ花粉感作症例より、当該配列番号1で示されるアミノ酸配列からなるヒノキ花粉アレルゲンタンパク質に特異的なT細胞ラインを個別に樹立し、当該タンパク質又はそのアイソフォームの一次構造の全域をカバーする20残基からなる57種類のオーバーラップペプチドに対する増殖活性を評価することにより、T細胞エピトープとして同定されたものである(実施例2~4参照)。したがって、本発明のペプチドには少なくとも一つのT細胞エピトープが存在し、本発明のペプチドはT細胞刺激活性を有するものである。
 ここで、T細胞刺激活性とは、T細胞増殖又はリンホカイン分泌等のT細胞応答を誘導する活性をいい、ヒトや動物に投与することによってT細胞の免疫寛容を誘導し得る作用を意味する。ここで、T細胞刺激活性は、例えば、細胞内への[3H]チミジン取り込みを測定し、刺激係数を算出することにより決定できる。ここで用いるT細胞応答の刺激係数(S.I.値)は、ペプチド存在下で細胞内へ取り込まれた[3H]チミジンの放射能のcpmを、ペプチド非存在下(対照)のcpmで除したものとして計算する。本発明のペプチドは、平均S.I.値が2.0以上のものである。
 このうち、あるペプチドの平均S.I.値に、当該ペプチドにT細胞応答を示す患者の出現頻度(%)を乗じた「重要度指数」が、少なくとも70以上のものが好ましく、斯かるペプチドとしては、配列番号4(ペプチド番号:#13)、配列番号5(ペプチド番号:#20)、配列番号7(ペプチド番号:#24)、配列番号8(ペプチド番号:#31)、配列番号10(ペプチド番号:#38)、配列番号11(ペプチド番号:#39)、配列番号12(ペプチド番号:#41)及び配列番号15(ペプチド番号:#52)で示されるアミノ酸配列からなるペプチドが挙げられる。斯かるペプチドは、スギ花粉やヒノキ花粉のアレルゲンに特異的なIgE抗体に結合せずアナフィラキシーを引き起こすことがないことから、ヒノキ花粉アレルゲンに特異的なT細胞に対して免疫寛容を誘導することができる免疫療法剤として特に好適である。
The peptide of the present invention individually establishes a T cell line specific to the cypress pollen allergen protein consisting of the amino acid sequence represented by SEQ ID NO: 1 from the cedar pollinosis cypress pollen sensitized case, It was identified as a T cell epitope by evaluating the proliferation activity against 57 overlapping peptides of 20 residues covering the entire primary structure of the isoform (see Examples 2 to 4). Therefore, the peptide of the present invention has at least one T cell epitope, and the peptide of the present invention has T cell stimulating activity.
Here, the T cell stimulating activity refers to an activity for inducing a T cell response such as T cell proliferation or lymphokine secretion, and means an action capable of inducing immune tolerance of T cells by administration to humans or animals. Here, the T cell stimulating activity can be determined, for example, by measuring [ 3 H] thymidine incorporation into cells and calculating the stimulation coefficient. The stimulation factor (SI value) of the T cell response used here is the cpm of the radioactivity of [ 3 H] thymidine incorporated into the cell in the presence of the peptide, as the cpm in the absence of the peptide (control). Calculate as divided. The peptides of the present invention have an average S.P. I. The value is 2.0 or more.
Of these, the average S.D. I. It is preferable that the “importance index” obtained by multiplying the value by the appearance frequency (%) of a patient exhibiting a T cell response to the peptide is at least 70 or more, and as such a peptide, SEQ ID NO: 4 (peptide number: # 13), SEQ ID NO: 5 (peptide number: # 20), SEQ ID NO: 7 (peptide number: # 24), SEQ ID NO: 8 (peptide number: # 31), SEQ ID NO: 10 (peptide number: # 38), SEQ ID NO: 11 (Peptide number: # 39), the peptide which consists of an amino acid sequence shown by sequence number 12 (peptide number: # 41) and sequence number 15 (peptide number: # 52) is mentioned. Such peptides do not bind to IgE antibodies specific to cedar pollen and cypress pollen allergens and do not cause anaphylaxis, and therefore can induce immune tolerance against T cells specific to cypress pollen allergens. It is particularly suitable as an immunotherapeutic agent that can be used.

 また、本発明においては、上記配列番号3~16で示されるアミノ酸配列からなるペプチドの他に、当該ペプチドにおいて1~3個のアミノ酸が置換及び/又は1~10個のアミノ酸が欠失若しくは付加したペプチドであって、且つT細胞刺激活性を有するペプチドが包含される。
 ここで、1~10個のアミノ酸が欠失したペプチドとしては、例えばN末端側及び/又はC末端側のアミノ酸が欠失したペプチドが包含され、例えばN末端側のアミノ酸0~10残基、C末端側のアミノ酸0~10残基、合計で1~10個のアミノ酸を欠失したものが挙げられる。
 具体的には、例えば、配列番号7で示されるアミノ酸配列からなるペプチド(#24)の場合、N末端側のアミノ酸1~3残基及び/又はC末端側のアミノ酸1~6残基が欠失し、少なくとも「FKEKIVYEGHW」を有するペプチド、配列番号10で示されるアミノ酸配列からなるペプチド(#38)の場合、N末端側のアミノ酸6~8残基及び/又はC末端側のアミノ酸1残基が欠失し、少なくとも「PYYQIIYHPAS」を有するペプチド、配列番号15で示されるアミノ酸配列からなるペプチド(#52)の場合、N末端側のアミノ酸1~2残基及び/又はC末端側のアミノ酸1~7残基が欠失し、少なくとも「FKVITTNKQ」を有するペプチドが挙げられる。
In the present invention, in addition to the peptide consisting of the amino acid sequence shown in SEQ ID NOs: 3 to 16, in the peptide, 1 to 3 amino acids are substituted and / or 1 to 10 amino acids are deleted or added And peptides having T cell stimulating activity.
Here, the peptide from which 1 to 10 amino acids have been deleted includes, for example, a peptide from which the N-terminal and / or C-terminal amino acids have been deleted. For example, the N-terminal amino acids 0 to 10 residues, C-terminal amino acids 0 to 10 residues, a total of 1 to 10 amino acids deleted.
Specifically, for example, in the case of the peptide (# 24) consisting of the amino acid sequence represented by SEQ ID NO: 7, the amino acid residues 1-3 on the N-terminal side and / or the amino acid residues 1-6 on the C-terminal side are missing. In the case of a peptide having at least “FKEKIVIEGGHW” and a peptide consisting of the amino acid sequence represented by SEQ ID NO: 10 (# 38), 6 to 8 amino acids on the N-terminal side and / or 1 amino acid residue on the C-terminal side Is a peptide having at least “PYYQIIYHPAS” and a peptide consisting of the amino acid sequence represented by SEQ ID NO: 15 (# 52), amino acid 1 to 2 residues on the N-terminal side and / or amino acid 1 on the C-terminal side Peptides lacking ˜7 residues and having at least “FKVITTNKQ”.

 また、1~10個のアミノ酸が付加したペプチドとしては、N末端側及び/又はC末端側に1~10のアミノ酸が付加されたペプチドが包含され、この場合、付加されるアミノ酸残基としては、配列番号1又は2で示されるアミノ酸配列において、当該ペプチドに対応するアミノ酸配列のN末端側又はC末端側に隣接する1~10個のアミノ酸残基が挙げられる。
 また、ここで「T細胞刺激活性を有する」とは、配列番号3~16で示されるアミノ酸配列からなるペプチドと同等以上のT細胞刺激活性を有することを意味する。尚、T細胞刺激活性の意味は上述したとおりである。
The peptide to which 1 to 10 amino acids are added includes a peptide to which 1 to 10 amino acids are added to the N-terminal side and / or the C-terminal side. In this case, the added amino acid residues include In the amino acid sequence represented by SEQ ID NO: 1 or 2, examples include 1 to 10 amino acid residues adjacent to the N-terminal side or C-terminal side of the amino acid sequence corresponding to the peptide.
In addition, “having T cell stimulating activity” herein means having T cell stimulating activity equal to or higher than that of the peptide consisting of the amino acid sequences shown in SEQ ID NOs: 3 to 16. The meaning of the T cell stimulating activity is as described above.

 本発明のT細胞エピトープペプチドは、一般的なペプチドの合成に用いられている固相合成、液相合成、或いはこれらを組み合わせたペプチド合成法によって合成できる。また、本発明のT細胞エピトープペプチドを組換えDNA技術で合成する場合は、当該ペプチドをコードする配列を有する核酸で形質転換した宿主細胞をその細胞に適した培地で培養し、その培養上清から又は宿主細胞から当該ペプチドを当業者に公知の技術を用いて合成することができる。宿主としては、大腸菌、酵母、哺乳動物細胞等を用いることができる。 The T cell epitope peptide of the present invention can be synthesized by solid phase synthesis, liquid phase synthesis, or a peptide synthesis method combining these, which is used for general peptide synthesis. When the T cell epitope peptide of the present invention is synthesized by recombinant DNA technology, host cells transformed with a nucleic acid having a sequence encoding the peptide are cultured in a medium suitable for the cells, and the culture supernatant is obtained. Or the host cell can be synthesized using techniques known to those skilled in the art. As the host, Escherichia coli, yeast, mammalian cells and the like can be used.

 本発明のT細胞エピトープペプチドは、ヒトに投与したとき、好ましくはヒノキ花粉アレルゲンに感作されている個人に投与したとき、その個人のアレルゲンに対するアレルギー応答を調節することができるので、ペプチド免疫療法に有用である。さらに、他のヒノキ花粉アレルゲンであるCha o1やCha o2のT細胞エピトープペプチドに加え、スギ花粉アレルゲンであるCry j1やCry j2のT細胞エピトープペプチド(特開平7-118295号公報、特開平8-47392号公報、Sone, T. et al., J. Immunol., 161:448-457, 1998)と組み合わせて用いることで、スギ・ヒノキに代表される春季樹木花粉症患者に対するペプチド免疫療法に有用である。 Peptide immunotherapy since the T cell epitope peptide of the present invention can modulate an allergic response to an individual's allergen when administered to a human, preferably when administered to an individual sensitized to cypress pollen allergen Useful for. Furthermore, in addition to the T-cell epitope peptides of other cypress pollen allergens, Cha o1 and Cha o2, the T-cell epitope peptides of Cry j1 and Cry j2, which are cedar pollen allergens (JP-A-7-118295, JP-A-8- 47392, Sone, T. et al., J. Immunol., 161: 448-457, 1998), useful for peptide immunotherapy for spring tree hay fever patients represented by Sugi and Hinoki It is.

 本発明のヒノキ花粉症のペプチド免疫療法剤は、注射(皮下、静脈注射等)、点眼、点鼻、経口、吸入、経皮など、通常の投与経路で投与することができ、投与形態に合わせて、錠剤、カプセル剤、顆粒剤、散剤、トローチ、舌下錠、シロップ剤、注射剤、坐剤、吸入剤、経皮吸収剤、点眼剤、点鼻剤、鼻腔内噴霧剤、湿布剤、パップ剤、軟膏、ローション、クリーム等の各種剤形の製剤として調製され得る。
 この場合、本発明のT細胞エピトープペプチドをそのまま、或いは乾燥して粉末状とし、希釈剤、添加剤等の担体、例えば安定剤、賦形剤、溶解補助剤、乳濁化剤、緩衝剤、無痛化剤、保存剤、着色剤等を常法により添加した配合剤として調製されるのが好ましい。
The cypress pollinosis peptide immunotherapeutic agent of the present invention can be administered by a normal administration route such as injection (subcutaneous, intravenous injection, etc.), eye drop, nasal drop, oral, inhalation, transdermal, etc. Tablets, capsules, granules, powders, troches, sublingual tablets, syrups, injections, suppositories, inhalants, transdermal absorption agents, eye drops, nasal drops, intranasal sprays, poultices, It can be prepared as preparations of various dosage forms such as cataplasms, ointments, lotions and creams.
In this case, the T cell epitope peptide of the present invention is used as it is or dried to form a powder, and a carrier such as a diluent and an additive, such as a stabilizer, an excipient, a solubilizing agent, an emulsifying agent, a buffer, It is preferably prepared as a compounding agent to which a soothing agent, a preservative, a coloring agent and the like are added by a conventional method.

 本発明のヒノキ花粉症のペプチド免疫療法剤の投与量は、例えば、注射による場合、本発明のペプチドを1投与量単位当たり約1μg~30mg、好ましくは20μg~10mgとすることができる。
 以下、実施例により本発明を具体的に説明するが、本発明はこれらの実施例により限定されるものではない。
The dosage of the cypress pollinosis peptide immunotherapeutic agent of the present invention can be, for example, by injection, about 1 μg to 30 mg, preferably 20 μg to 10 mg of the peptide of the present invention per dosage unit.
EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited by these Examples.

実施例1 ヒノキ花粉アレルゲンタンパク質の精製
 ヒノキ花粉50g花粉に抽出緩衝液(25mM Tris緩衝液、pH8.0)1000mlを加え、10分間攪拌後、15分間超音波処理した。得られた懸濁液を遠心分離(3,000rpm、15分)して上清を得、これをフィルトレーションすることで抽出液を得た。この抽出液を10mM Tris緩衝液(pH8.0)で平衡化させたDE52陰イオン交換カラムに添加し、非吸着画分を集めた。続いて20mM酢酸緩衝液(pH5.2)で平衡化させたCM52陽イオン交換カラムに吸着させ、NaCl含10mM Tris緩衝液(pH7.8)でグラジエント溶出したものをフラクションに分割して回収した。各フラクションの一部をSDS-PAGEにより解析し、分子量66kDa付近のタンパク質を含むフラクションを合一した。
Example 1 Purification of cypress pollen allergen protein 1000 ml of extraction buffer (25 mM Tris buffer, pH 8.0) was added to 50 g of cypress pollen and stirred for 10 minutes, followed by sonication for 15 minutes. The obtained suspension was centrifuged (3,000 rpm, 15 minutes) to obtain a supernatant, which was filtered to obtain an extract. This extract was added to a DE52 anion exchange column equilibrated with 10 mM Tris buffer (pH 8.0), and non-adsorbed fractions were collected. Subsequently, the resultant was adsorbed on a CM52 cation exchange column equilibrated with 20 mM acetate buffer (pH 5.2), and gradient-eluted with NaCl-containing 10 mM Tris buffer (pH 7.8) was divided into fractions and collected. A part of each fraction was analyzed by SDS-PAGE, and fractions containing a protein with a molecular weight of about 66 kDa were combined.

実施例2 オーバーラップペプチドの合成
 オーバーラップペプチドは、PepTrack Peptide Libraryサービス(JPT Peptide Technologies)にて委託合成した。実施例1で得られたヒノキ花粉アレルゲンタンパク質(以下、「Protein X」と称する)(配列番号1)の一次構造を基にして、N末端1番目のLeuから始まり、C末端のLeuまで、10残基のオーバーラップ部分を含む20残基のオーバーラップペプチド(#52(配列番号52)は18残基)52種類(#1~#52)を合成した(表1~2)。なお、本タンパク質のアイソフォームとして、配列番号1で示されるアミノ酸配列において、2番目のProがThrに、230番目のValがIleに、271番目のValがIleに、それぞれ置換したタンパク質が存在し(配列番号2)、これらについても同様にオーバーラップペプチド5種類(#53~#57)を作製した(表3)。
Example 2 Synthesis of Overlapping Peptides Overlapping peptides were synthesized under commission by the PepTrack Peptide Library service (JPT Peptide Technologies). Based on the primary structure of the cypress pollen allergen protein (hereinafter referred to as “Protein X”) (SEQ ID NO: 1) obtained in Example 1, starting from the N-terminal first Leu to the C-terminal Leu, 10 52 types of overlapping peptides (# 1 to # 52) containing 20 overlapping residues (18 residues for # 52 (SEQ ID NO: 52)) were synthesized (Tables 1-2). As an isoform of this protein, there is a protein in which the second Pro is replaced with Thr, the 230th Val is Ile, and the 271st Val is Ile in the amino acid sequence represented by SEQ ID NO: 1. (SEQ ID NO: 2) For these, 5 types of overlapping peptides (# 53 to # 57) were similarly prepared (Table 3).

Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001

Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002

Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003

実施例3 新規ヒノキ花粉特異的T細胞ラインの樹立
 スギ花粉症でヒノキ花粉に感作されている患者20名の末梢血からリンパ球を通常用いられているFicoll-paque比重遠心法で単離し、一部を液体窒素に保存した。末梢血リンパ球(1.2×107個)を、6mlの自己血漿10%を添加したRPMI-1640に懸濁し、ヒノキ花粉から精製したProtein Xと共に24穴培養プレート上で7~8日間培養した。抗原刺激を受けて活性化されたT細胞が顕微鏡下で確認できた時点で20 Unit/mlのIL-2を添加し、一晩培養した。翌日からは、20 Unit/mlのIL-2、10%自己血漿を添加したRPMI-1640で毎日培養液を変えながら、10-12日間培養したものをT細胞エピトープの同定用のT細胞ラインとした。
Example 3 Establishment of a novel cypress pollen-specific T cell line Lymphocytes were isolated from the peripheral blood of 20 patients sensitized to cypress pollen due to cedar pollinosis by the commonly used Ficoll-paque specific gravity centrifugation method, A portion was stored in liquid nitrogen. Peripheral blood lymphocytes (1.2 × 10 7 cells) were suspended in RPMI-1640 supplemented with 6 ml of autologous plasma 10% and cultured for 7-8 days on a 24-well culture plate with Protein X purified from cypress pollen. did. When T cells activated by antigen stimulation were confirmed under a microscope, 20 Unit / ml IL-2 was added and cultured overnight. From the next day, the culture medium was changed daily with RPMI-1640 supplemented with 20 Unit / ml IL-2, 10% autologous plasma, and cultured for 10-12 days as a T cell line for T cell epitope identification. did.

実施例4 T細胞エピトープを含むペプチドの同定
 20名の花粉症患者から樹立したT細胞ラインについて、それぞれ合成したオーバーラップペプチドとともに培養し、Protein X特異的T細胞エピトープペプチドの同定を行った。すなわち、抗原提示細胞として、T細胞ラインと同一の患者から凍結ストックした末梢血単核球を融解後、X線照射(36Gy)し、10%自己血漿を添加したRPMI-1640に懸濁した。この抗原提示細胞を96穴平底プレートに播種(1×105 cells/well)した後、Protein X(最終濃度10μg/ml)あるいは各ペプチド(最終濃度2μM)を各々のウェルに添加した。次いで、10%自己血漿を添加したRPMI-1640に懸濁したT細胞ライン(2×104 cells/well)を各ウェルに播種し、37℃、5% CO2条件で48時間培養の後、1μCi[3H]チミジンをウェルに添加し、さらに16時間培養した。細胞をハーベスターを用いてガラスフィルター上に捕集し、乾燥してから、細胞内に取込まれた[3H]チミジンの放射活性(cpm)をトップカウント(パーキンエルマー製)で測定した。増殖活性の指標として、ペプチド刺激によるT細胞ラインの放射活性を、ペプチド非添加の放射活性(対照)で割った値をS.I.値として算出し、S.I.値が2以上の値を示したペプチドを、T細胞エピトープペプチドとして同定した。図1は、全てのオーバーラップペプチドの「平均S.I.値」(20名のS.I.値の平均値)と「出現頻度(%)」(20名中のS.I.値が2以上であった割合)及び「重要度指数」(平均S.I.値と出現頻度を乗じた値)を示している。
Example 4 Identification of Peptide Containing T Cell Epitope T cell lines established from 20 hay fever patients were cultured with each synthesized overlapping peptide, and Protein X specific T cell epitope peptide was identified. That is, peripheral blood mononuclear cells frozen and stocked from the same patient as the T cell line were thawed as antigen-presenting cells, X-irradiated (36 Gy), and suspended in RPMI-1640 supplemented with 10% autologous plasma. The antigen-presenting cells were seeded in a 96-well flat bottom plate (1 × 10 5 cells / well), and then Protein X (final concentration 10 μg / ml) or each peptide (final concentration 2 μM) was added to each well. Next, a T cell line (2 × 10 4 cells / well) suspended in RPMI-1640 supplemented with 10% autologous plasma was seeded in each well, and after culturing at 37 ° C. and 5% CO 2 for 48 hours, 1 μCi [ 3 H] thymidine was added to the wells and incubated for another 16 hours. The cells were collected on a glass filter using a harvester, dried, and the radioactivity (cpm) of [ 3 H] thymidine incorporated into the cells was measured with a top count (manufactured by PerkinElmer). As an index of proliferative activity, the value obtained by dividing the radioactivity of the T cell line by peptide stimulation by the radioactivity without the addition of peptide (control) was obtained from S. cerevisiae. I. Calculated as a value. I. Peptides showing values of 2 or more were identified as T cell epitope peptides. FIG. 1 shows the “average SI value” (average value of 20 SI values) and “appearance frequency (%)” of all overlapping peptides (the SI values in 20 people are the same). 2) and “importance index” (a value obtained by multiplying the average SI value and the appearance frequency).

実施例5 ヒノキ花粉特異的IgEとの結合能の確認
 5名のヒノキ花粉症患者血清を用いて、ヒノキ花粉特異的IgEとの結合能を確認した。本発明の好適なT細胞エピトープペプチド(重要度指数が100以上)あるいはヒノキ花粉アレルゲンをMaxisorp 96穴プレート(ヌンク)に1μg/50μL/wellとなるように添加後、一晩4℃で静置することにより固相化した。翌日プレートを洗浄後、1%牛血清アルブミン含有PBSを添加、1時間室温静置することでブロッキングを実施した。プレート洗浄後、5倍希釈した患者血清又は陰性対照血清を添加し2時間室温静置させた。陰性対照にはhealthy donor血清(ヒノキRAST Score=0)を用いた。プレート洗浄後、1%牛血清アルブミン含有PBSで7000倍希釈した2次抗体(HRP標識ヤギ抗ヒトIgE抗体、 Novus)を添加して、40分間室温静置した。プレートを洗浄後、TMB Substrate Reagent Set(BD Biosciences)にてTMB発色を室温静置、遮光状態で20分間実施した。終了後、1N 硫酸を添加することで発色を停止させ、マイクロプレートリーダーにて波長450nmの吸光度を測定した。その結果を図2に示す。尚、図2において、V012、V014、V031、V047、V051は、それぞれ5名のヒノキ花粉症患者IDを示す。
 本発明のT細胞エピトープペプチドは、ヒノキ花粉特異的IgEと結合しないことが確認された。
Example 5 Confirmation of binding ability to cypress pollen-specific IgE Binding ability to cypress pollen-specific IgE was confirmed using 5 cypress pollinosis patient sera. A preferred T cell epitope peptide (importance index of 100 or more) or cypress pollen allergen of the present invention is added to a Maxisorp 96-well plate (Nunk) at 1 μg / 50 μL / well, and then allowed to stand overnight at 4 ° C. To be solid-phased. On the next day, after washing the plate, blocking was performed by adding PBS containing 1% bovine serum albumin and allowing to stand at room temperature for 1 hour. After washing the plate, patient serum or negative control serum diluted 5-fold was added and allowed to stand at room temperature for 2 hours. As a negative control, health donor serum (hinoki RAST Score = 0) was used. After the plate was washed, a secondary antibody (HRP-labeled goat anti-human IgE antibody, Novus) diluted 7000 times with PBS containing 1% bovine serum albumin was added, and left at room temperature for 40 minutes. After washing the plate, TMB color development was performed at room temperature in a TMB Substrate Reagent Set (BD Biosciences) for 20 minutes in a light-shielded state. After completion, color development was stopped by adding 1N sulfuric acid, and absorbance at a wavelength of 450 nm was measured with a microplate reader. The result is shown in FIG. In FIG. 2, V012, V014, V031, V047, and V051 indicate five cypress pollinosis patient IDs, respectively.
It was confirmed that the T cell epitope peptide of the present invention does not bind to cypress pollen-specific IgE.

実施例6 20merエピトープ特異的T細胞ラインの樹立
 スギ花粉症でヒノキ花粉に感作されている患者末梢血からリンパ球を、通常用いられているFicoll-paque比重遠心法で単離し、一部を液体窒素に保存した。末梢血リンパ球を、自己血漿10%を添加したRPMI-1640に懸濁し、最終濃度1μMの20merエピトープペプチドと共に96穴培養プレート上で(1.5×105cells/well)7~8日間培養した。並行して培養6~7日目には以下の通り継代に必要な抗原提示細胞を調製した。すなわち、同一の患者から凍結ストックした末梢血単核球を起眠し、10%自己血漿を添加したRPMI-1640培地に懸濁後、最終濃度10μMの20merエピトープペプチドを添加し24穴培養プレート上で一晩培養した。翌日それら細胞をX線照射(45Gy)後、培地中の20merエピトープペプチドを洗浄・除去したものを継代用抗原提示細胞とした。リンパ球培養7~8日目に、96穴培養プレートに播種されているリンパ球のうち各ウェル1/3ずつを、最終濃度100 Unit/mlのhuman IL-2、最終濃度50ng/mlのhuman IL-4および10%自己血漿を添加したRPMI-1640培地に懸濁した継代用抗原提示細胞とともに96穴培養プレート上で7日間培養した。残るリンパ球各ウェル2/3については、抗原特異性の評価に用いた。IL-2、IL-4および継代用抗原提示細胞とともに7日間培養したリンパ球のうち、20merエピトープペプチド特異的T細胞陽性と判定したウェルのリンパ球を全て集め、最終濃度100 Unit/mlのhuman IL-2、最終濃度50ng/mlのhuman IL-4および10%自己血漿を添加したRPMI-1640培地に懸濁し、前述の方法で調製した継代用抗原提示細胞とともに24穴培養プレートにて7日間拡大培養した。以後、7日毎に継代用抗原提示細胞にて拡大培養を続け、20merエピトープペプチド特異的な細胞増殖を示す細胞集団を20merエピトープペプチド特異的T細胞ラインとした。
Example 6 Establishment of 20-mer epitope-specific T cell line Lymphocytes were isolated from the peripheral blood of a patient sensitized to Japanese cypress pollen in Japanese cedar pollinosis by a commonly used Ficoll-paque specific gravity centrifugation method Stored in liquid nitrogen. Peripheral blood lymphocytes are suspended in RPMI-1640 supplemented with 10% autologous plasma and cultured in 96-well culture plates (1.5 × 10 5 cells / well) for 7-8 days with 20-mer epitope peptide at a final concentration of 1 μM. did. In parallel, antigen-presenting cells necessary for passage were prepared on the 6th to 7th days of culture as follows. That is, peripheral blood mononuclear cells frozen from the same patient were put to sleep, suspended in RPMI-1640 medium supplemented with 10% autologous plasma, and then added to a 20-mer epitope peptide with a final concentration of 10 μM on a 24-well culture plate. Incubated overnight. On the next day, the cells were subjected to X-ray irradiation (45 Gy), and the 20-mer epitope peptide in the medium was washed and removed, and used as antigen-presenting cells for passage. On day 7 to 8 of lymphocyte culture, 1/3 of each well of lymphocytes inoculated in a 96-well culture plate was treated with human IL-2 at a final concentration of 100 Unit / ml and human at a final concentration of 50 ng / ml. The cells were cultured for 7 days on a 96-well culture plate with antigen-presenting cells for passage suspended in RPMI-1640 medium supplemented with IL-4 and 10% autologous plasma. The remaining 2/3 of each lymphocyte well was used for evaluation of antigen specificity. Of the lymphocytes cultured for 7 days with IL-2, IL-4, and passage antigen-presenting cells, all the lymphocytes of wells determined to be positive for 20-mer epitope peptide-specific T cells were collected, and a final concentration of 100 Unit / ml human Suspended in RPMI-1640 medium supplemented with IL-2, human IL-4 at a final concentration of 50 ng / ml and 10% autologous plasma, together with antigen-presenting cells for passage prepared as described above, in a 24-well culture plate for 7 days The culture was expanded. Thereafter, expansion culture was continued with the antigen-presenting cells for passage every 7 days, and a cell population showing 20-mer epitope peptide-specific cell proliferation was defined as a 20-mer epitope peptide-specific T cell line.

実施例7 エピトープコア配列の推定
 エピトープ20merのC末端より1アミノ酸残基ずつアミノ酸が欠失したペプチド(#52-1~#52-8、#24-1~#24-8、#38-1~#24-3)、N末端より1アミノ酸残基ずつアミノ酸が欠失したペプチド(#52-9~#52-13、#24-9~#24-13)、及びN末端より6~9アミノ酸残基が欠失したペプチド(#38-4~#24-7)を合成した。樹立した20merエピトープペプチド特異的T細胞ラインについて、上記短縮ペプチドとともに培養することで、エピトープコア配列の推定を行った。すなわち、抗原提示細胞として、T細胞ラインと同一の患者から凍結ストックした末梢血単核球を融解後、X線照射(45Gy)し、10%自己血漿を添加したRPMI-1640に懸濁した。この抗原提示細胞を96穴平底プレートに播種(1×105 cells/well)した後、20merペプチドあるいは各短縮ペプチド(最終濃度2μM)を各々のウェルに添加した。次いで、10%自己血漿を添加したRPMI-1640に懸濁したT細胞ライン(2×104 cells/well)を各ウェルに播種し、37℃、5% CO2条件で48時間培養の後、1μCi[3H]チミジンをウェルに添加し、さらに16時間培養した。細胞をハーベスターを用いてガラスフィルター上に捕集し、乾燥してから、細胞内に取込まれた[3H]チミジンの放射活性(cpm)をトップカウント(パーキンエルマー製)で測定した。増殖活性の指標として、ペプチド刺激によるT細胞ラインの放射活性を、ペプチド非添加の放射活性(対照)で割った値をS.I.値として算出した。その結果の一例を図3~図5に示す。
 N末端ならびにC末端を欠失させた短縮ペプチドにてT細胞増殖活性を示した(S.I.値が2以上)最小の配列を元に両末端を決定したものをコア配列とした。上記手法により推定できた#24エピトープペプチド、#38エピトープペプチドおよび#52エピトープペプチドにおけるコア配列は、#24エピトープペプチド(配列番号7)では、4~14番目の「FKEKIVYEGHW」であり、#38エピトープペプチド(配列番号10)では、9~19番目の「PYYQIIYHPAS」であり、#52エピトープペプチド(配列番号15)では、3~11番目の「FKVITTNKQ」である。
Example 7 Estimation of Epitope Core Sequence Peptides (# 52-1 to # 52-8, # 24-1 to # 24-8, # 38-1) with one amino acid residue deleted from the C-terminus of epitope 20mer ~ # 24-3), peptides in which one amino acid residue is deleted from the N-terminal (# 52-9 to # 52-13, # 24-9 to # 24-13), and 6 to 9 from the N-terminal Peptides (# 38-4 to # 24-7) lacking amino acid residues were synthesized. The established 20-mer epitope peptide-specific T cell line was cultured together with the shortened peptide to estimate the epitope core sequence. That is, peripheral blood mononuclear cells frozen and stocked from the same patient as the T cell line were thawed as antigen-presenting cells, X-ray irradiated (45 Gy), and suspended in RPMI-1640 supplemented with 10% autologous plasma. The antigen-presenting cells were seeded on a 96-well flat bottom plate (1 × 10 5 cells / well), and then 20mer peptide or each shortened peptide (final concentration 2 μM) was added to each well. Next, a T cell line (2 × 10 4 cells / well) suspended in RPMI-1640 supplemented with 10% autologous plasma was seeded in each well, and after culturing at 37 ° C. and 5% CO 2 for 48 hours, 1 μCi [3H] thymidine was added to the wells and incubated for an additional 16 hours. The cells were collected on a glass filter using a harvester, dried, and the radioactivity (cpm) of [ 3 H] thymidine incorporated into the cells was measured with a top count (manufactured by PerkinElmer). As an index of proliferative activity, the value obtained by dividing the radioactivity of the T cell line by peptide stimulation by the radioactivity without the addition of peptide (control) was obtained from the S. p. I. Calculated as value. An example of the result is shown in FIGS.
The core sequence was determined by determining both ends based on the minimum sequence that showed T cell proliferation activity with a shortened peptide lacking the N-terminus and C-terminus (SI value of 2 or more). In the # 24 epitope peptide (SEQ ID NO: 7), the core sequence in the # 24 epitope peptide, # 38 epitope peptide and # 52 epitope peptide that can be estimated by the above method is the 4th to 14th “FKEKIVYEGHW”, and the # 38 epitope peptide In the peptide (SEQ ID NO: 10), it is the 9th to 19th “PYYQIIYHPAS”, and in the # 52 epitope peptide (SEQ ID NO: 15), it is the 3rd to 11th “FKVITTNNKQ”.

Claims (7)

 配列番号3~16で示されるアミノ酸配列からなる群より選ばれるペプチド、又は当該ペプチドにおいて1~3個のアミノ酸が置換及び/又は1~10個のアミノ酸が欠失若しくは付加したペプチドであって、且つT細胞刺激活性を有するペプチド。 A peptide selected from the group consisting of the amino acid sequences shown in SEQ ID NOs: 3 to 16, or a peptide in which 1 to 3 amino acids are substituted and / or 1 to 10 amino acids are deleted or added in the peptide, And a peptide having T cell stimulating activity.  1~10個のアミノ酸が欠失したペプチドが、当該ペプチドのN末端側及び/又はC末端側のアミノ酸が欠失したものである、請求項1記載のペプチド。 The peptide according to claim 1, wherein the peptide in which 1 to 10 amino acids are deleted is a peptide in which an amino acid on the N-terminal side and / or C-terminal side of the peptide is deleted.  配列番号7で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「FKEKIVYEGHW」を有するペプチド、配列番号10で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「PYYQIIYHPAS」を有するペプチド、又は配列番号15で示されるアミノ酸配列からなるペプチドのN末端側及び/又はC末端側のアミノ酸が欠失し、少なくとも「FKVITTNKQ」を有するペプチドである、請求項2記載のペプチド。 N-terminal and / or C-terminal side amino acids of the peptide consisting of the amino acid sequence shown by SEQ ID NO: 7 and having at least “FKEKIVEYGHW”, N-terminal of the peptide consisting of the amino acid sequence shown by SEQ ID NO: 10 And / or the C-terminal side amino acid is deleted, and the peptide having at least “PYYQIIYHPAS” or the peptide consisting of the amino acid sequence represented by SEQ ID NO: 15 is deleted at the N-terminal side and / or C-terminal side. The peptide according to claim 2, which is a peptide having at least “FKVITTNKQ”.  請求項1~3のいずれか1項に記載されたペプチドの1種又は2種以上を有効成分として含有する、ヒノキ花粉症のペプチド免疫療法剤。 A peptide immunotherapeutic agent for Japanese cypress pollinosis containing one or more of the peptides according to any one of claims 1 to 3 as an active ingredient.  ヒノキ花粉症のペプチド免疫療法剤を製造するための、請求項1~3のいずれか1項に記載されたペプチドの1種又は2種以上の使用。 Use of one or more of the peptides described in any one of claims 1 to 3 for producing a peptide immunotherapeutic agent for cypress pollinosis.  ヒノキ花粉症のペプチド免疫療法に使用するための、請求項1~3のいずれか1項に記載されたペプチドの1種又は2種以上。 The peptide according to any one of claims 1 to 3, which is used for peptide immunotherapy for cypress pollinosis.  請求項1~3のいずれか1項に記載されたペプチドの1種又は2種以上を投与するヒノキ花粉症のペプチド免疫療法。 Peptide immunotherapy for hinoki hay fever, wherein one or more of the peptides according to any one of claims 1 to 3 is administered.
PCT/JP2013/070219 2012-07-26 2013-07-25 Novel t cell epitope peptide of japanese cypress pollen allergen Ceased WO2014017599A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014527008A JP5981549B2 (en) 2012-07-26 2013-07-25 Novel cypress pollen allergen T cell epitope peptide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-166053 2012-07-26
JP2012166053 2012-07-26

Publications (1)

Publication Number Publication Date
WO2014017599A1 true WO2014017599A1 (en) 2014-01-30

Family

ID=49997406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/070219 Ceased WO2014017599A1 (en) 2012-07-26 2013-07-25 Novel t cell epitope peptide of japanese cypress pollen allergen

Country Status (3)

Country Link
JP (1) JP5981549B2 (en)
TW (1) TW201406786A (en)
WO (1) WO2014017599A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032600A1 (en) * 1996-03-10 1997-09-12 Meiji Milk Products Co., Ltd. Peptide-base immunotherapeutic agent for allergic diseases
WO1997047648A1 (en) * 1996-06-14 1997-12-18 Meiji Milk Products Co., Ltd. T cell epitope peptide
WO2012105541A1 (en) * 2011-01-31 2012-08-09 大鵬薬品工業株式会社 Novel japanese cypress pollen allergen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032600A1 (en) * 1996-03-10 1997-09-12 Meiji Milk Products Co., Ltd. Peptide-base immunotherapeutic agent for allergic diseases
WO1997047648A1 (en) * 1996-06-14 1997-12-18 Meiji Milk Products Co., Ltd. T cell epitope peptide
WO2012105541A1 (en) * 2011-01-31 2012-08-09 大鵬薬品工業株式会社 Novel japanese cypress pollen allergen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ITO H. ET AL.: "Analysis of the allergenic components of Hinoki cypress (Chamaecyparis obtusa) pollen by immunoblotting with the sera from patients with Japanese cedar pollinosis", ALLERGOL. INT., vol. 45, no. 4, 1996, pages 181 - 186 *
SONE T. ET AL.: "Identification of human T cell epitopes in Japanese cypress pollen allergen, Cha o 1, elucidates the intrinsic mechanism of cross-allergenicity between Cha o 1 and Cry j 1, the major allergen of Japanese cedar pollen, at the T cell level", CLIN. EXP. ALLERGY, vol. 35, no. 5, 2005, pages 664 - 671 *
SONE T. ET AL.: "Recognition of T cell epitopes unique to Cha o 2, the major allergen in Japanese cypress pollen, in allergic patients cross-reactive to Japanese cedar and Japanese cypress pollen", ALLERGOL. INT., vol. 58, no. 2, 2009, pages 237 - 245 *

Also Published As

Publication number Publication date
JPWO2014017599A1 (en) 2016-07-11
JP5981549B2 (en) 2016-08-31
TW201406786A (en) 2014-02-16

Similar Documents

Publication Publication Date Title
ES2402956T3 (en) Peptide with reduced dimer formation
JP4176821B2 (en) T cell epitope peptide
JP6300907B2 (en) Consecutive overlapping peptides for the treatment of house dust mite allergy
KR20140129124A (en) Timothy grass allergens and methods and uses for immune response modulation
O'HEHIR et al. House dust mite allergy: from T‐cell epitopes to immuno‐therapy
DK2393830T3 (en) Grass peptides for vaccine
JPWO1997047648A1 (en) T cell epitope peptide
ES2463828T3 (en) Hypoallergenic hybrid polypeptides for allergy treatment
Vrtala et al. Genetic engineering of trimers of hypoallergenic fragments of the major birch pollen allergen, Bet v 1, for allergy vaccination
Elsayed et al. T cell recognition pattern of bovine milk αS1-casein and its peptides
US9005627B2 (en) Contiguous overlapping peptides for treatment of ragweed pollen allergy
JP5981549B2 (en) Novel cypress pollen allergen T cell epitope peptide
Zhao et al. Construction of the recombinant vaccine based on T-cell epitope encoding Der p1 and evaluation on its specific immunotherapy efficacy
CN102811735B (en) Variants of group 6 allergens of Poaceae with reduced allergenicity due to mutation of proline residues
WO2015077442A2 (en) Grass pollen immunogens and methods and uses for immune response modulation
RU2761431C1 (en) Recombinant polypeptide based on birch pollen allergen and apple allergen as an allergy vaccine
JP4176750B2 (en) T cell epitope peptide
Li et al. Analysis of T-cell epitopes of Der f3 in Dermatophagoides farina
JP4085105B2 (en) Peptide immunotherapy for allergic diseases
CN118922202A (en) MHC Ib mediated islet antigen specific immunosuppression as a novel therapy for type 1 diabetes
JP4085092B2 (en) Peptide immunotherapy for allergic diseases
AU2014352986A1 (en) Pan pollen immunogens and methods and uses thereof for immune response modulation
KR100646313B1 (en) Peptides or salts thereof for preventing and treating allergic diseases and pharmaceutical compositions containing the same
JP2007176953A (en) Peptide immunotherapy for allergic diseases
Gómez-Casado et al. Research Article Allergenic Characterization of New Mutant Forms of Pru p 3 as New Immunotherapy Vaccines

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: 13823730

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014527008

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13823730

Country of ref document: EP

Kind code of ref document: A1