WO2000008148A1 - Sequences nucleiques codant pour une proteine (atip) interagissant avec le recepteur at2 et leurs applications - Google Patents
Sequences nucleiques codant pour une proteine (atip) interagissant avec le recepteur at2 et leurs applications Download PDFInfo
- Publication number
- WO2000008148A1 WO2000008148A1 PCT/FR1999/001908 FR9901908W WO0008148A1 WO 2000008148 A1 WO2000008148 A1 WO 2000008148A1 FR 9901908 W FR9901908 W FR 9901908W WO 0008148 A1 WO0008148 A1 WO 0008148A1
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- Prior art keywords
- protein
- atip
- receptor
- transcription factor
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- 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
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
Definitions
- the AT2 receptor which also belongs to the family of G protein-coupled receptors, is still poorly characterized both from the point of view of its activation mechanisms and of its physiological role (C. Nahmias et al, Trends Pharmacol Sri, 1995, 16, 223-225). Several arguments, however, suggest a role for this receptor in the phenomena of proliferation, differentiation or cell adhesion.
- the AT2 receptor is highly expressed during fetal life, disappears in adults in most tissues, but is re-expressed under pathophysiological conditions involving tissue restructuring.
- the AT2 receptor has also been shown to interfere with the growth factor receptor activation pathways and inhibit the activity of MAP kinases (ERK1 and ERK2) (mitogen-activated protein), which play a key role in the phenomena cell proliferation and differentiation.
- MAP kinases ERK1 and ERK2
- the inhibitory effect of AT2 on the activation of MAP kinases is rapid and transient, does not involve a regulatory protein sensitive to pertussis toxin (Gi / Go type), but involves the activation of a tyrosine phosphatase sensitive to orthovanadate.
- the inventors Given the role of the AT2 receptor on cell proliferation, the inventors have sought to develop tools capable of regulating 1st action of the AT2 receptor. Indeed, the activation of the AT2 receptor can have repercussions in oncology (inhibition of cell proliferation).
- the AT2 receptor has effects opposite to those of AT1 on the activation of MAP kinases and on cell proliferation; the study of the communication which can exist between these two subtypes of receptors, binding the same ligand, is therefore of interest.
- the study of the signaling pathways and the regulation of the AT2 receptor also represents an important issue for human health, knowing that today ATI receptor antagonists are administered to patients with hypertension. In this context, it becomes essential to know the biological effects associated with the AT2 receptor which remains activatable by the circulating Ang II in this type of treatment.
- the subject of the present invention is a fragment of isolated nucleic acids (DNA or RNA), coding for a protein capable of binding to the AT2 receptor, which fragment is selected from the group consisting of the sequences SEQ ID NO: 1, 3, 5, 7 and 9, as presented in the list of sequences, included in this Application. These different sequences correspond to complementary DNA (cDNA) coding for part or all of the protein hereinafter called ATIP (AT2 interacting protein).
- sequence SEQ ID NO: 1 (1803 bp) corresponds to the complete nucleic sequence of the mouse ATIP and includes both the parts coding for the AT2 receptor binding protein and the non-coding parts.
- sequence NO: 3 corresponds to the nucleic acid sequence of the coding part of the sequence SEQ ID NO: l, while the sequence SEQ ID NO: 5 corresponds to the fragment of the sequence NO: l, obtained by the double-hybrid technique (A. Plessis et al., M / S, 1994, 9, I-1K; J. Luban et al, Curr. Op. Biotechnol, 1995, 6, 59-64).
- sequence SEQ ID NO: 7 (3742 bp) corresponds to the complete nucleic sequence of human cDNA and includes both the parts coding for the protein homologous to mouse ATIP and the non-coding parts.
- sequence SEQ ID NO: 9 (1308 bp) corresponds to the coding part of the sequence SEQ ID NO: 7.
- the present invention also relates to transcripts, characterized in that they are complementary to the sequences according to the invention and are in particular generated from said sequences.
- the present invention further relates to fragments of said sequences comprising between 20 and 400 bp, useful as probes or as primers, for the detection of sequences SEQ ID NO: 1, 3, 5, 7 or 9, or of homologous sequences.
- fragments there may be mentioned in particular a probe of 354 bp, (SEQ ID NO: 5) as well as any fragment of 20 bp to 400 bp included in the sequences SEQ ID NO: 1, 3, 5, 7 or 9.
- sequence SEQ ID NO: 10 antisense oligonucleotide
- ATIP 5 ′ RACE technique: Marathon cDNA amplification kit, Clontech
- hybridization and hybridization are in particular the following: 45% formamide, 9% Dextransulfate, 0.2% BSA, 0.2% polyvinyl pyrrolidone, 0.2% Ficoll, 0.1% sodium pyrophosphate, 0.01% SDS, 0.05 mM Tris pH 7.5, 0.9 M NaCl and rinses to a stringency corresponding to the buffer: SSCX1, 0.1% SDS.
- the present invention also relates to a purified and isolated protein, called ATIP, capable of interacting with the AT2 receptor, selected from the group consisting of the sequences SEQ ID NO: 2, 4, 6 or 8.
- the murine and human sequences have 85.6% homologies.
- the human sequence (human ATIP) has 5 fewer amino acids than the mouse sequence (ATIP mouse).
- the missing amino acids in the human sequence are at the amino acid level: 162, 163,
- the present invention also relates to a translation product, characterized in that it is coded by a nucleotide sequence in accordance with the invention.
- the present invention further relates to antibodies, characterized in that they are directed against the ATIP protein or a fragment of ATIP protein according to the invention.
- the present invention also relates to a recombinant cloning and / or expression vector, characterized in that it comprises a nucleotide sequence in accordance with the invention.
- the present invention also relates to a transformed host cell, characterized in that it comprises a vector as defined above.
- a transformed host cell characterized in that it comprises a vector as defined above.
- the preferred transformed cells according to the invention mention may be made of E. coli and CHO cells.
- the present invention also relates to transformed host cells, characterized in that they consist of a suitable yeast strain co-transformed with at least two vectors which respectively code (i) for a protein called bait selected in the group consisting of a fragment containing at least SEQ ID NO: 5 of the ATIP protein and a fragment containing at least the C-terminal end of the AT2 receptor, which bait protein is fused to a protein selected from the group consisting of the domain of DNA binding of a transcription factor and the activation domain of the same transcription factor and (ii) for a protein known as prey, selected from the group consisting of a fragment containing at least SEQ ID NO: 5 protein ATIP, a fragment containing at least the C-terminal end of the AT2 receptor and any other polypeptide corresponding to a sequence contained in a cDNA library, which prey protein is fused to a protein selected from the group consisting of DNA binding domain of a transcription factor and the activation domain of the same transcription factor, which vectors further comprise selectable markers we.
- said cells notably consist of:
- Such a method notably implements the so-called triple-hybrid or reverse double-hybrid technique, as described in Vidal et al. (Proc. Natl. Acad. Sri. USA, 1996, 93, 10315-10320 and 10321-10326) or Tirode et al. (]. Biol. Chem., 1997, 272, 37, 22995-22999).
- the present invention also relates to a method of screening for polypeptides interacting with the ATIP protein according to the invention, which method comprises:
- the present invention also relates to a method for characterizing the domains involved in the ATIP protein-AT2 receptor interaction, characterized in that it comprises:
- Such a method makes it possible to identify and delimit the important domains of the ATIP protein or of the C-terminal end of the AT2 receptor, on which their interaction depends, in order to use them as a privileged target for modifying the signaling of the AT2 receptor.
- the subject of the present invention is also a method of selecting substances capable of influencing the ATIP protein interaction according to the invention-AT2 receptor, which method comprises: (a) bringing the ATIP protein fixed on a support into contact with a AT2 receptor-tag protein fusion protein, possibly in the presence of a test substance,
- the visualization step is negative.
- ATIP is fixed to said support either covalently or by affinity bonding between a fixing substance fused to ATIP and said support.
- said support consists of beads coupled either to a substance having an affinity with said fixing protein, fused to ATIP, or to suitable antibodies.
- the AT2 receptor-tag protein fusion protein is in particular obtained from a lysate of cells transfected with a vector expressing the AT2-tag protein fusion protein.
- said method for selecting substances capable of interacting with the ATIP protein according to the invention comprises:
- the invention-AT2 receptor it is possible to use, in particular as ATIP-tag protein fusion proteins, the GST-ATIPc and MYC-ATIPc proteins, which constitute tools which can make it possible to entrain possible interacting proteins in vitro with ATIP, for example, from cell lysates activated or not by ligands of the AT2 receptor.
- the GST-ATIP protein can be caused by specific interaction of GST with agarose beads coupled to glutathione, or else immunoprecipitated with the anti-ATIP antibody.
- the Myc-ATIP protein can be immunoprecipitated with commercial anti-MYC antibodies or with anti-ATIP antibody.
- the interest of these methods consists in finding means of modifying the signaling, the level of expression or the pharmacology of the AT2 receptor, this being able to have therapeutic applications.
- a modification of this transduction in particular by acting on the binding of the AT2 receptor to the protein according to the invention, may then possibly compensate for the pathological disorder or at least influence it.
- the present invention also relates to the use of the aforementioned co-transformed cells, for the selection and screening of substances or proteins capable of influencing the ATIP protein-AT2 receptor interaction or capable of interacting with the ATIP protein.
- FIG. 2 illustrates the position of the GAL4 binding domain and the multiple cloning site of the plasmid pGBT9 (Clontech);
- FIG. 8 illustrates the structure of the plasmid pBAC-PAK-poly HIS
- Protein X C-terminal end of the sequence coding for the mouse AT2 receptor (52 amino acids from CNNPF at the stop codon, see FIG. 1), fused to the sequence coding for the DNA binding domain of Gal4 (FIG. 2 ).
- any other pair of ohgonucleotides (primers) of more than 20 bp and comprising a part of the ATIP sequence can also be used. to amplify by PCR (PCR conditions to be determined for each pair of oligonucleotides using the OLIGO 4 software) part of the ATIP (and give a DNA fragment which could possibly be used as a probe to recognize the DNA or RNA corresponding to ATIP).
- PCR PCR conditions to be determined for each pair of oligonucleotides using the OLIGO 4 software
- Stable clones expressing both the human AT2 receptor and the short mouse ATIP (SEQ ID NO: 6) or the long mouse ATIP (SEQ ID NO: 3) were obtained by transfection.
- the selected clone CHO-hAT2, expressing 100 fmol of AT2 receptor / mg of protein, is cultured on HAMF12 medium supplemented with 10% fetal calf serum and used between passages 10 and 30.
- This clone has itself been transfected with the plasmids pCDNA3-MYC-ATIPsouris-short or pCDNA3-ATIPsouris-long described in Example 3.
- the selection of the clones stably expressing the ATIP protein (short form or long form) was done in selective medium containing 800 ⁇ g / ml of G418.
- the results obtained indicate that different clones expressing different levels of short mouse ATIP could be obtained.
- GGA TCC-SEQ NO: 5-TAG-TGA-ATT is inserted into the plasmid pRSETA, as defined above.
- Nickel Ni-NTA, QuiAexpressionist 07/97, Quiagen
- the protein obtained is then injected into rabbits to obtain polyclonal antibodies directed against the protein ATIP.
- the grooves obtained have a very good titer.
- This purified antibody was used in immunofluorescence on CHO-hAT2 cells, fixed by a 15-minute treatment with paraformaldehyde (3%). After fixation, the cells are successively treated with PBS / 50 mM glycine solutions for 20 minutes, PBS / Triton X100 0.1% for 5 minutes and PBS / BSA 0.2% for 15 minutes. They are then incubated successively in solutions at 15 ⁇ g / ml of antibody containing the purified anti-ATIP antibody, then the rabbit anti-immunoglobulin antibody coupled to rhodamine for 30 minutes. Between each new incubation, three rinses in PBS are carried out. Observations under the fluorescence microscope indicate an expression of the endogenous ATIP protein in the nucleus (mainly) and in the cytoplasm of CHO-hAT2 cells.
- the CHO-hAT2 cells are seeded at a density of 3.10 6 cells per 15 cm 2 dish in diameter. They are made quiescent by a weaning of 16 hours before being treated.
- the treatment consists in bringing into contact for 5 minutes with 15 ml of F12 medium containing insulin with or without CGP42112 added (selective agonist of the AT2 receptor).
- the cells are dissolved in lysis buffer containing: 50 mM Hepes, pH 7.6, 1% Triton X-100, 20 mM EDTA, 30 mM sodium pyrophosphate, 30 mM sodium fluoride, 2 mM benzamidine, 1 mM sodium orthovanadate, 1 mM phenylmethylsuphonyl fluoride and 1 ⁇ g / ml aprotinin, pepstatin, antipain and leupeptin.
- the lysates are then subjected to a purification on a wheat germ lectin column according to the protocol described in Issad, T., et al. (Eur.]. Biochem. 1995, 234, 108-115).
- SIRP newly cloned protein
- the phosphorylation of this protein, as well as that of IR ⁇ is inhibited in the presence of CGP42112 in the case of the clone CHO-hAT2 and is not in the case of the clone CHO-hAT2-ATIP. This confirms that the ATIP protein interferes with the signaling pathways of the AT2 receptor.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
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Abstract
Description
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/762,194 US6835539B1 (en) | 1998-08-04 | 1999-08-02 | Nucleic sequences coding for an AT2 interacting proteins interacting with the AT2 receptor and their applications |
| CA002339083A CA2339083A1 (fr) | 1998-08-04 | 1999-08-02 | Sequences nucleiques codant pour une proteine (atip) interagissant avec le recepteur at2 et leurs applications |
| EP99936666A EP1102843A1 (fr) | 1998-08-04 | 1999-08-02 | Sequences nucleiques codant pour une proteine (atip) interagissant avec le recepteur at2 et leurs applications |
| US10/976,933 US20060040277A1 (en) | 1998-08-04 | 2004-10-29 | Nucleic sequences encoding an AT2 receptor-interacting protein (ATIP) and their applications |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9809997A FR2782084A1 (fr) | 1998-08-04 | 1998-08-04 | Sequences nucleiques codant pour tout ou partie d'une proteine interagissant avec le recepteur at2 et leurs applications |
| FR98/09997 | 1998-08-04 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/976,933 Division US20060040277A1 (en) | 1998-08-04 | 2004-10-29 | Nucleic sequences encoding an AT2 receptor-interacting protein (ATIP) and their applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000008148A1 true WO2000008148A1 (fr) | 2000-02-17 |
Family
ID=9529376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1999/001908 Ceased WO2000008148A1 (fr) | 1998-08-04 | 1999-08-02 | Sequences nucleiques codant pour une proteine (atip) interagissant avec le recepteur at2 et leurs applications |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6835539B1 (fr) |
| EP (1) | EP1102843A1 (fr) |
| CA (1) | CA2339083A1 (fr) |
| FR (1) | FR2782084A1 (fr) |
| WO (1) | WO2000008148A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2804690A1 (fr) * | 2000-02-07 | 2001-08-10 | Centre Nat Rech Scient | Nouvelles famille de proteines, denommees atip, les sequences nucleiques codant pour lesdites proteines et leurs applications |
| US8048986B2 (en) | 2001-07-03 | 2011-11-01 | Vlaams Interuniversitair Instituut Voor Biotechnologie Vzw | Reversed mammalian protein-protein interaction trap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948414A (zh) * | 2022-09-28 | 2023-04-11 | 安徽农业大学 | 一种基于y2h筛选梨石细胞负调控因子互作蛋白的方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5925523A (en) * | 1996-08-23 | 1999-07-20 | President & Fellows Of Harvard College | Intraction trap assay, reagents and uses thereof |
-
1998
- 1998-08-04 FR FR9809997A patent/FR2782084A1/fr not_active Withdrawn
-
1999
- 1999-08-02 EP EP99936666A patent/EP1102843A1/fr not_active Withdrawn
- 1999-08-02 WO PCT/FR1999/001908 patent/WO2000008148A1/fr not_active Ceased
- 1999-08-02 CA CA002339083A patent/CA2339083A1/fr not_active Abandoned
- 1999-08-02 US US09/762,194 patent/US6835539B1/en not_active Expired - Fee Related
-
2004
- 2004-10-29 US US10/976,933 patent/US20060040277A1/en not_active Abandoned
Non-Patent Citations (6)
| Title |
|---|
| BEDECS ET AL: "Angiotensin II type 2 receptors mediate inhibition of mitogen -activated protein kinase cascade and functional activation of SHP - 1 tyrosine phosphatase", BIOCHEMICAL JOURNAL, vol. 352, no. 2, 15 July 1997 (1997-07-15), pages 449 - 454, XP002094565 * |
| DATABASE EMEST2 EMBL, Heidelberg, Germany; 8 November 1997 (1997-11-08), NCI-CGAP: "Homo sapiens cDNA clone IMAGE:1188695", XP002126887 * |
| DATABASE EMEST4 EMBL, Heidelberg, Germany; 30 March 1998 (1998-03-30), MARRA M ET AL.: "Mus musculus cDNA clone 1277601", XP002100073 * |
| DATABASE R61U002 EMBL, Heidelberg, Germany; 14 July 1999 (1999-07-14), WAMBUTT R ET AL.: "Homo sapiens mRNA, cDNA DKFZp586D1519", XP002126888 * |
| NAHMIAS C ET AL: "The angiotensin AT2 receptor: searching for signal-transduction pathways and physiological function.", TRENDS IN PHARMACOLOGICAL SCIENCES, (1995 JUL) 16 (7) 223-5. REF: 28 JOURNAL CODE: WFT. ISSN: 0165-6147., XP002100074 * |
| TIRODE ET AL: "A CONDITIONALLY EXPRESSED THIRD PARTNER STABILIZES OR PREVENTS THE FORMATION OF A TRANSCRIPTIONAL ACTIVATOR IN A THREE-HYBRID SYSTEM", JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 37, no. 272, 1997, pages 22995-22999, XP002051283 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2804690A1 (fr) * | 2000-02-07 | 2001-08-10 | Centre Nat Rech Scient | Nouvelles famille de proteines, denommees atip, les sequences nucleiques codant pour lesdites proteines et leurs applications |
| WO2001057209A3 (fr) * | 2000-02-07 | 2002-04-11 | Centre Nat Rech Scient | Nouvelle famille de proteines, denommees atip, les sequences nucleiques codant pour lesdites proteines et leurs applications |
| US8048986B2 (en) | 2001-07-03 | 2011-11-01 | Vlaams Interuniversitair Instituut Voor Biotechnologie Vzw | Reversed mammalian protein-protein interaction trap |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2782084A1 (fr) | 2000-02-11 |
| US20060040277A1 (en) | 2006-02-23 |
| US6835539B1 (en) | 2004-12-28 |
| CA2339083A1 (fr) | 2000-02-17 |
| EP1102843A1 (fr) | 2001-05-30 |
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