WO2002072827A1 - Recepteur specifique de cellule b se liant a traf3 - Google Patents
Recepteur specifique de cellule b se liant a traf3 Download PDFInfo
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- WO2002072827A1 WO2002072827A1 PCT/JP2002/001849 JP0201849W WO02072827A1 WO 2002072827 A1 WO2002072827 A1 WO 2002072827A1 JP 0201849 W JP0201849 W JP 0201849W WO 02072827 A1 WO02072827 A1 WO 02072827A1
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- protein
- traf
- amino acid
- traf3
- acid sequence
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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
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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]
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- 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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to a novel TRAF3-binding protein that is a member of the B cell-specific receptor.
- the present invention also provides a gene encoding the protein, a vector having the gene, a transformant having the gene, an antibody recognizing the protein, a method for screening a drug utilizing the protein, and
- the present invention relates to a diagnostic method using the protein. Background art
- TNF tumor necrosis factor
- L ⁇ lymphotoxin
- NGF neurotrophic factor
- TNF receptor superfamily members include P55TNF receptor, p75TNF receptor, TNF receptor-related factor, Fas antigen, CD40, CD27, CD30, 0X40, low affinity p75 and NGF receptor. ing.
- the function of several TNF receptor families has been elucidated, for example, the Fas antigen and low-affinity NGF receptor and their ligands are involved in programmed cell death, and the CD40 ligand is a T cell. Involved in vesicle-dependent B cell activation.
- Fas Activation of Fas is triggered by the death domain-containing adapter molecule, FAD D / MORT 1, which binds to the intracellular domain of Fas, which in turn activates the pro-apoptotic protease, caspase 8, and ultimately triggers apoptosis I do.
- FAD D / MORT 1 the death domain-containing adapter molecule
- TNFR-1 transmits a wide range of biologically active signals mainly by activating NF- ⁇ B.
- TNFR-1 binds to the death domain-containing TRADD and the intracellular domain of TNFR_1, and through its association with numerous signaling molecules such as FADD, TRAF2, and RIP, both apoptosis and NF- ⁇ B activation Transmit the other signal. Since the actions of TNF family ligands and TNF family receptors are diverse and affect many biological processes, these receptors, ligands, and signaling molecules associated with them are identified and solved. Analyzing is important in establishing a cure for the disease.
- TNF receptor-related factor is a family of proteins that was first discovered as a downstream signaling factor in the TNF receptor superfamily
- TRAFs 1-6 has a coiled-coil TRAF-N domain, and the C-terminal TRAF-C domain is conserved.
- TRAF—C domain Mediates the interaction between TRAF proteins and the binding of the proteins to factors of the TNFR superfamily [Cheng, G., et al. (1995) Science 267, 1494-1498; Takeuchi, M., et al. (1996) J. Biol. Chem. 271, 19935-19942; and Hsu, H., et al., (1996) Cell 84, 299-308].
- TRAF 3 was first identified as a molecule that binds to the cytoplasmic domain of the B cell surface marker CD40 and LMP-1, a Epstein-Virgils latent membrane protein [Mosialos, G., et al. 1995) Cell 80, 389-399; Sato, T., et al., (1995) FEBS Lett. 358, 113-118; Hu, HM, et al., (1994) J. Biol. Chem. 269, 30069-30072; ⁇ Cheng, G., et al. (1995) Science 267, 1494-1498].
- TRAF3 has also been shown to interact with the cytoplasmic terminal portion of other factors in the TNFR family, such as the lymphotoxin receptor [Force, WR, et al., (1997) J. Biol. Chem. 272 , 30835-30840].
- TRAF family proteins including TRAF 3, are cytoplasmic proteins that appear to lack catalytic activity and are generally thought to function as adapter proteins.
- TRAF 3 has been shown to interact with other signaling molecules such as NIK :, ASK and TANK [Song, HY, et al., (1997) Proc. Natl. Acad. Sci. USA 94, 9792-9796; Nishitoh, H., et al. (1995) Mol. Cell 2, 389-395; and Regnier, CH, et al., (1997) Cell 90, 373-383].
- the mechanism by which TRAF3 mediates signaling has not been fully elucidated. Disclosure of the invention
- An object of the present invention is to identify a signaling molecule that binds to TRAF3. Another object of the present invention is to solve the problem of closing a gene encoding a signaling molecule that binds to TRAF3 and elucidating the structure and function of the gene. Another object of the present invention is to provide a novel drug or diagnostic method using a gene encoding a signal transduction molecule that binds to TRAF3.
- the present inventors screened protein-protein interaction using yeast. This screening utilizes the recruitment of human S os (hS os) protein to the cell membrane to activate the yeast RAS signal transduction pathway and complement the yeast cdc25 gene deficiency.
- T3BP TRAF3-binding protein
- a protein having any one of the following amino acid sequences is provided.
- a gene encoding the protein of the present invention there is provided a gene encoding the protein of the present invention. Further, according to the present invention, a gene having any one of the following nucleotide sequences is provided. (a) the nucleotide sequence of SEQ ID NO: 2;
- a vector comprising the gene of the present invention. Further, according to the present invention, there is provided a transformant having the gene of the present invention or the vector of the present invention.
- a method for producing a protein having a binding activity to TRAF3, comprising using the transformant of the present invention.
- an antibody that recognizes the protein of the present invention there is provided an antibody that recognizes the protein of the present invention. Further, according to the present invention, there is provided a method for screening for a substance that promotes or suppresses the function of the protein or antibody using the protein or antibody of the present invention. Preferably, the substance that promotes or suppresses the function of the protein or antibody of the present invention is a substance that promotes or suppresses intracellular signal transduction via TRAF3.
- a medicine containing the above substance as an active ingredient containing the above substance as an active ingredient.
- the medicament of the present invention is preferably used for the prevention or treatment of a disease associated with abnormal TRAF3-mediated intracellular signal transduction.
- a method for diagnosing a disease associated with an abnormality in TRAF3-mediated intracellular signal transduction which comprises measuring the level of the protein of the present invention in a biological component.
- FIG. 1A shows the deduced amino acid sequence of T3BP
- FIG. 1B shows the result of Northern blot analysis of T3BP mRNA.
- FIG. 2A shows the results of analysis of the binding properties of GST fusion proteins (GST-clone 3, GST-clone 10) to TRAF 2 and TRAF 3 by GST pull-down assay.
- FIG. 2B shows TRAF 2, TRAF 3, TRAF 5, and TRA of GST-T 3 BP.
- Fig. 4 shows the results of analysis of the binding property to F6 by GST pull-down assay.
- FIG. 2C shows the results of analysis of the interaction between TRAF 3 and T3 BP by immunoprecipitation assay.
- 3A and 3B show the results of mapping the T3BP binding region in TRAF3.
- FIG. 3C shows a schematic of the primary structure of mouse TRAF3.
- FIG. 4A shows the results of in vitro assay analysis of the binding properties of GST-fused T3BP truncation mutants to TRAF3.
- FIG. 4B shows the results of GST analysis of the binding properties of the GST-fused T3BP truncation mutant to TRAF3 by GST-Brudan assay.
- FIG. 4C shows the primary structure of T 3 BP and its TRAF 3 binding region.
- FIG. 5A shows morphological changes of cells due to expression of T3BP.
- FIG. 5B shows the effect of T3BP expression on the cellular distribution of TRAF3.
- FIG. 6A shows the increase in cellular Factin content by T3BP.
- FIG. 6B shows the results of observing the cell distribution of Factin in cells expressing T3BP.
- the present invention relates to a protein having any one of the following amino acid sequences, and a gene encoding the same. '
- gene of the present invention include a gene having any one of the following nucleotide sequences.
- ⁇ 1 to several '' in the above ⁇ amino acid sequence in which one to several amino acids are deleted, substituted, and Z or inserted in the amino acid sequence described in SEQ ID NO: 1 '' is not particularly limited, for example, It means 1 to 20, preferably 1 to 10, more preferably 1 to 7, more preferably 1 to 5, particularly preferably about 1 to 3.
- amino acid sequence having 60% or more homology with the amino acid sequence of SEQ ID NO: 1 means that the amino acid sequence has at least 60% homology with the amino acid sequence of SEQ ID NO: 1. % Or more, preferably 70% or more, more preferably 80% or more, still more preferably 90% or more, particularly preferably 95% or more, and most preferably 98% or more.
- ⁇ 1 to several '' in the above ⁇ base sequence in which one to several bases are deleted, added or substituted in the base sequence described in SEQ ID NO: 2 '' is not particularly limited, For example, 1 to 60, preferably 1 to 30, more preferably 1 to 20, more preferably 1 to 10, and particularly preferably about 1 to 5.
- base sequence that hybridizes under stringent conditions refers to a method in which DNA is used as a probe and colony hybridization is performed.
- DNAs that hybridize under stringent conditions include DNAs having a certain degree of homology with the nucleotide sequence of the DNA used as the probe, for example, 70% or more, preferably 80% or more, and more. DNAs having a homology of preferably 90% or more, more preferably 93% or more, particularly preferably 95% or more, and most preferably 98% or more.
- the above-mentioned "having a binding activity to TRA.F3” means that it can bind to TRAF3 with the same or higher affinity as the protein having the amino acid sequence of SEQ ID NO: 1, and Refers to being able to participate in intracellular signaling mediated by TRAF 3.
- the method for obtaining the gene of the present invention is not particularly limited.
- Appropriate probes and primers are prepared based on the information on the nucleotide sequence and amino acid sequence shown in SEQ ID NO: 1 and SEQ ID NO: 2 in the sequence listing in this specification, and the cDNA library of mouse or the like is prepared using them.
- a mouse-derived cDNA library is made from cells, organs or tissues expressing the gene of the present invention. Specific examples of cells expressing the gene include, but are not limited to, WE HI231 cells.
- DNA having the base sequence described in SEQ ID NO: 2 can also be obtained by PCR. Using a mouse chromosomal DNA or cDNA library as type III, PCR is performed using a pair of primers designed to amplify the nucleotide sequence shown in SEQ ID NO: 2.
- the PCR reaction conditions can be set as appropriate, for example, a reaction consisting of 94 at 30 seconds (deformation), 55 ° C for 30 seconds to 1 minute (annealing), and 72 ° C for 2 minutes (extension). As one cycle of the process, for example, after performing 30 cycles, the reaction may be carried out at 72 ° C. for 7 minutes.
- the amplified DNA fragment can be cloned into an appropriate vector that can be amplified in a host such as E. coli.
- a gene having a nucleotide sequence encoding a protein can also be produced by any method known to those skilled in the art, such as chemical synthesis, genetic engineering, or mutagenesis. Specifically, a mutated DNA can be obtained by using a DNA having the nucleotide sequence of SEQ ID NO: 2 and introducing a mutation into these DNAs.
- the method can be carried out using a method of bringing a DNA having the base sequence of SEQ ID NO: 2 into contact with a drug as a mutagen, a method of irradiating ultraviolet rays, a genetic engineering technique, or the like.
- Site-directed mutagenesis which is one of the genetic engineering techniques, is useful because it is a technique that can introduce a specific mutation at a specific position.
- Molecular Cloning, 2nd edition, Powerent Protozores 'In' Molecular ⁇ Bio It can be performed according to the method described in Logi et al.
- (C) a base sequence that hybridizes with the base sequence of SEQ ID NO: 2 under stringent conditions and that encodes a protein having a binding activity to TRAF3 as described above in the present specification; As described above, it can be obtained by performing a colony hybridization method, a plaque hybridization method, a Southern blot hybridization method, or the like under a certain hybridization condition.
- the method for obtaining and producing the protein of the present invention is not particularly limited, and may be any of a naturally-derived protein, a chemically synthesized protein, and a recombinant protein produced by a gene recombination technique. Recombinant proteins are preferred in that they can be produced in large quantities with relatively easy operation.
- the protein When a naturally-occurring protein is obtained, the protein can be isolated from cells or tissues expressing the protein by appropriately combining isolation and purification methods.
- the protein of the present invention can be synthesized according to a chemical synthesis method such as the Fmoc method (fluorenylmethyloxycarbonyl method) and the tBoc method (t-butyloxycarbonyl method). it can.
- various commercially available peptide synthesizers for example, Kuwawa Trading Co., Ltd. (U.S.A.)), Parkin Elmer Javan (U.S.A., Perkin-Elmer), Pharmacia Biotech Co., Ltd.
- the protein of the present invention as a recombinant protein, a DNA having a nucleotide sequence encoding the protein (for example, the nucleotide sequence of SEQ ID NO: 2) or a mutant or homologue thereof is obtained and preferably used.
- the protein of the present invention can be produced. Expression vectors and transformation See later in this specification for the production of the body and the production of the recombinant protein using it.
- a protein having an amino acid sequence in which one to several amino acids have been deleted, substituted or inserted in the amino acid sequence described in SEQ ID NO: 1, or 60% or more of the amino acid sequence described in SEQ ID NO: 1 A protein having an amino acid sequence having homology to a person skilled in the art based on information on the nucleotide sequence described in SEQ ID NO: 2 which is an example of a DNA sequence encoding the amino acid sequence described in SEQ ID NO: 1 It can be manufactured or obtained as appropriate.
- the DNA can be isolated from a mouse or an organism other than a mouse as a DNA probe having the nucleotide sequence of SEQ ID NO: 2 or a part thereof by screening the homologue of the DNA under appropriate conditions.
- the corresponding cDNA sequence can be obtained from a homology search of the DNA sequence database and prepared by PCR or the like. After cloning the full-length DNA of this homolog DNA, incorporating it into an expression vector and expressing it in an appropriate host, a protein encoded by the homolog DNA can be produced.
- the gene of the present invention can be incorporated into an appropriate vector and used as a recombinant vector.
- the type of vector may be an expression vector or a non-expression vector, and can be selected according to the purpose.
- any phage vector, plasmid vector, etc. can be used.
- ZAP Express [Stratagene, Strategies, 5, 58 (1992)
- pBluescript II SK (+) [Nucleic Acids Research, 17, 9494 (1989)]
- Lambda ZAP II (Stratagene), IgtlO, gtll CDNA Cloning, A Practical Approach, 1, 49 ( 1985)
- ⁇ TriplEx (Clontech), ⁇ ExCell (Pharmacia), pT7T318U (Pharmacia), pcD2 [Mol. Cen.
- the expression vector those which can replicate autonomously in the host cell or can be integrated into the chromosome of the host cell are preferably used.
- those containing a promoter at a position where the gene of the present invention can be expressed are used.
- an expression vector for expressing the gene of the present invention is capable of autonomous replication in the bacterium, and comprises a promoter, a ribosome binding sequence, the above DNA and a transcription termination sequence. It is preferable that the vector be a recombinant vector. A gene that controls the promoter may be included.
- expression vectors for bacteria include, for example, pBTrP2, pBTacl, pBTac2 (commercially available from Ringerman Ringermanheim), pKK233-2 (Pharmacia), pSE280 (Invitrogen), pGEMEX-KPromega ), PQE-8 (QIAGEN), pQE-30 (QIAGEN), pKYP10 (JP-A-58-110600), ⁇ 200
- bacterial promoters include, for example, promoters derived from Escherichia coli and phage, such as trp promoter (P trp), lac promoter (Plac), PL promoter, PR promoter, PSE promoter, SP01 promoter, and SP02 promoter. And a penP promoter.
- yeast expression vectors for yeast include YEpl3 (ATCC37115), YEp24 (ATCC37051), Ycp50 (ATCC37419), pHS19, and pHS15.
- promoters for yeast include PH05 promoter, PGK Promoter, GAP promoter, ADH promoter, gall promoter, gallO promoter, heat shock tanker. Promoters, such as protein promoter, MF QJI promoter and CUP1 promoter.
- Examples of expression vectors for animal cells include, for example, pcDNAI, pcDM8 (commercially available from Funakoshi), pAGE107 (Japanese Unexamined Patent Application Publication No. 3-22979; Cytotechnology, 3, 133, (1990)), pAS3-3 (Japanese Unexamined Patent Application Publication No. 2-227075), pCDM8 [Nature, 329, 840, (1987)], pcDNAI / AmP (Invitrogen), REP4 (Invitrogen), AGE103 [J. Blochem., 101, 1307 (1987)], pAGE210, etc. Can be.
- promoters for animal cells include, for example, the promoter of the immediate early (IE) gene of cytomegalovirus (human CMV), the early promoter of SV40, the promoter of retrovirus / less, the promoter of metallothionein, and the heat promoter. Shock promoter, SRa promoter and the like can be mentioned.
- Examples of expression vectors for plant cells include pIG121-Hm [Plant Cell Report, 15, 809-814 (1995)], pBI121 CEMBO J. 6, 3901-3907 (1987)] and the like.
- Examples of promoters for plant cells include the cauliflower mosaic virus 35S promoter CMol.Gen.Genet (1990) 220, 389-392], the rubrose bisphosphite force / repoxylase sumonoresable unit promoter, and the like. be able to.
- a transformant having a gene encoding a protein having a binding activity to TRAF3 of the present invention can be prepared by introducing the above-described recombinant vector (preferably an expression vector) into a host.
- bacterial host cells include the genera Escherichia, Corynebacterium, Brevibacterium, Bacillus, Microbacterium, Serratia, Pseudomonas, Agrobacterium, Alicyclobacillus, Anabaena>, Anacystis, Arthrobacter fe, Azobacter Genus, Erwinia, Methylobacterium, Phormidium, Rhodobacter, Rhodopseudomonas, Rhodospirillum Microorganisms belonging to the genus, Scenedesmun, Streptomyces, Synnecoccus, Zymomonas and the like can be mentioned.
- Methods for introducing a recombinant vector into a bacterial host include, for example, a method using calcium ions and a protoplast method.
- yeast hosts include Saccharomyces cerevisae, Schizosaccharomyces pombe, Cryveromyces lactis, Luyveromyces lactis, and Trichosporon pullus. Norevis (Schwanniomyces alluvius) and the like. Examples of a method for introducing a recombinant vector into a yeast host include an electoral poration method, a spheroblast method, and a lithium acetate method.
- Animal cell hosts include Namalba cells, COS1 cells, COS7 cells, CHO cells and the like.
- a method for introducing the recombinant vector into animal cells for example, an electroporation method, a caneol phosphate method, a lipofection method and the like can be used.
- a recombinant gene transfer vector and a baculovirus are co-transfected into the insect cell to obtain a recombinant virus in an insect cell culture supernatant.
- an autographa californica nuclear polyhedrosis virus which is a virus that infects the insects of the family Spodoptera
- Insect cells include Spodoptera frugiperda ovary cells, Sf9 and Sf21 [Baculoinoles. Expression 'Vectors, A' Laboratory Manual, Double H 'Freeman' and 'Company (WH Freeman and Company) s New York (New York), (1992)], H i F ive (Invitrogen ovarian cells of Trichoplusia ni) and the like can be used.
- Examples of a method of co-introducing a recombinant gene introduction vector and the above baculovirus into insect cells for preparing a recombinant virus include a calcium phosphate method and a lipofection method.
- the transformant having the gene of the present invention produced as described above is cultured, the protein of the present invention is produced and accumulated in a culture, and the protein of the present invention is collected from the culture.
- the recombinant protein can be isolated.
- the culture medium for culturing these microorganisms contains a carbon source, a nitrogen source, inorganic salts, and the like which can be utilized by the microorganism.
- a natural medium or a synthetic medium may be used as long as the medium can efficiently culture the transformant.
- the cultivation is preferably performed under aerobic conditions such as shaking culture or deep aeration stirring culture, and the culture temperature is usually 15 to 40, and the culture time is usually 16 hours to 7 days.
- the pH is maintained between 3.0 and 9.0. The pH is adjusted using inorganic or organic acids, alkaline solutions, urea, calcium carbonate, ammonia and the like. If necessary, an antibiotic such as ampicillin or tetracycline may be added to the medium during the culture.
- a medium for culturing a transformant obtained using animal cells as host cells As a medium for culturing a transformant obtained using animal cells as host cells, a commonly used RPM11640 medium [The Journal of the American Medical Associati. n, 199,519 (1967)), Eagle's MEM medium [Science, 122,501 (1952)], DMEM medium [Virology, 8, 396 (1959)], 199 medium [Proceeding of the Society for the Biological Medicine, 73, 1 (1950)] or a medium obtained by adding fetal bovine serum or the like to such a medium. Culture is carried out usually pH6 ⁇ 8, 30 ⁇ 40 ° C, 5% C0 2 present 1 to 7 days in conditions under such lower. If necessary, antibiotics such as kanamycin and penicillin may be added to the medium during the culture.
- a medium usually used according to the plant species such as an MS medium or an R 2 P medium, is used. Cultivation is usually performed for 1 to 21 days under conditions of pH 6 to 8 and 15 to 35 ° C. If necessary, antibiotics such as kanamycin and hygromycin may be added to the medium during the culture.
- the cells when the protein of the present invention is expressed in a lysed state in cells, the cells are recovered by centrifugation after cell culture, suspended in an aqueous buffer, and then sonicated with a crusher, french press, and Mentongaulin homogenizer. The cells are disrupted using a Dynomill or the like to obtain a cell-free extract.
- a normal protein isolation and purification method that is, a solvent extraction method, a salting out method using ammonium sulfate, a desalting method, a precipitation method using an organic solvent, Anion-exchange chromatography using resin such as getylaminoethyl (DEAE) Sepharose, DIAION HPA-75 (manufactured by Mitsubishi Kasei), and cation using resin such as S-Sepharose FF (manufactured by Pharmacia) Exchange chromatography, hydrophobic chromatography using resins such as ptinoresepharose, feninoresepharose, gel filtration using molecular sieve, ab init chromatography, chromatofocusing, isoelectric focusing, etc.
- a purified sample can be obtained using a technique such as electrophoresis alone or in combination.
- the cells are similarly recovered, crushed, and the protein is recovered by a usual method from the precipitate fraction obtained by centrifugation. Thereafter, the insoluble form of the protein is solubilized with a protein denaturant. After diluting or dialyzing the lysate into a solution that does not contain a protein denaturant or is diluted to such an extent that the protein denaturant does not denature the protein, and after forming the protein into a normal three-dimensional structure, A purified sample can be obtained by the same isolation and purification method. (5) an antibody that recognizes the protein of the present invention
- the TRAF3-binding protein Since the TRAF3-binding protein has been identified by the present invention, an antibody that recognizes the protein can be produced. Production of such an antibody is useful in studies such as elucidation of the kinetics of the protein or TRAF3.
- the antibody of the present invention may be a polyclonal antibody or a monoclonal antibody, and can be produced by a conventional method.
- a polyclonal antibody that recognizes the protein of the present invention is obtained by immunizing a mammal with the protein of the present invention as an antigen, collecting blood from the mammal, and separating and purifying the antibody from the collected blood.
- the antigen may be administered, for example, two to three times at intervals of 7 to 30 days.
- the dose can be, for example, about 0.05 to 2 mg per antigen.
- the route of administration is not particularly limited, and can be appropriately selected from subcutaneous administration, intradermal administration, intraperitoneal administration, intravenous administration, intramuscular administration, etc., but by injection intravenously, intraperitoneally or subcutaneously. Preferably, it is administered.
- the antigen can be used after being dissolved in an appropriate buffer, for example, an appropriate buffer containing a commonly used adjuvant such as complete Freund's adjuvant or aluminum hydroxide. Depending on the administration route and conditions, the antigen can be used. May not be used.
- the serum of the mammal is sampled, and the antibody titer is measured.
- booster immunization is performed using, for example, 100; ig to 100 ⁇ g of the antigen.
- blood is collected from the immunized mammal, and the blood is subjected to, for example, centrifugation, precipitation using ammonium sulfate or polyethylene glycol, gel filtration chromatography, ion exchange chromatography.
- Polyclonal antiserum can be separated and purified by standard methods such as chromatography, affinity chromatography, etc. As a result, a polyclonal antibody that recognizes the protein of the present invention can be obtained.
- the serum may be inactivated by, for example, treating the serum at 56 ° C. for 30 minutes.
- the globulin type of the monoclonal antibody that recognizes the protein of the present invention is not particularly limited, and examples include IgG, IgM, IgA, IgE, and IgD.
- the cell line that produces the monoclonal antibody of the present invention is not particularly limited.
- the cell line can be obtained as a hybridoma by cell fusion between an antibody-producing cell and a Myeoma cell line.
- the hybridoma producing the monoclonal antibody of the present invention can be obtained by the following cell fusion method.
- spleen cells As antibody-producing cells, spleen cells, lymph node cells, B lymphocytes and the like from immunized animals are used.
- the protein of the present invention or its partial peptide is used as the antigen.
- Mice, rats, etc. can be used as immunized animals, and administration of the antigen to these animals is performed by a conventional method.
- a suspension or emulsion of an adjuvant such as complete Freund's adjuvant or incomplete Freund's adjuvant and the protein of the present invention as an antigen is administered several times to the vein, subcutaneous, intradermal, intraperitoneal, etc. of an animal. Immunize the animal.
- a spleen cell is obtained as an antibody-producing cell from the immunized animal, and this is fused with a myeloma cell by a known method (G. Kohler et al., Nature, 256 495 (1975)) to produce a hybridoma. can do.
- myeloma cell lines used for cell fusion include P3X63Ag8, P3U1 strain, and Sp2Z0 strain in mice.
- Cell fusion is performed using a fusion accelerator such as polyethylene glycol or Sendai virus.Hypoxoma after cell fusion is selected using hypoxanthine 'aminopterin' thymidine (HAT) medium according to standard methods. I do.
- Hybridomas obtained by cell fusion are cloned by Langkai dilution method or the like.
- a cell line that produces a monoclonal antibody that specifically recognizes the protein of the present invention can be obtained by performing screening by an enzyme immunoassay using the protein of the present invention.
- the hybridoma is cultured by a conventional cell culture method or ascites formation method, and the monoclonal antibody is purified from the culture supernatant or ascites.
- Purification of the monoclonal antibody from the culture supernatant or ascites can be performed by a conventional method. For example, ammonium sulfate fractionation, gel filtration, ion exchange chromatography, affinity chromatography and the like can be used in an appropriate combination.
- Methods for immunoassaying the TRAF3-binding protein of the present invention using the monoclonal antibody of the present invention include, for example, enzyme immunoassay, radioimmunoassay, fluorescence immunoassay, and luminescence immunoassay. be able to.
- Antibody fragments include F (ab ') 2 fragments, Fab' fragments and the like.
- labeled antibodies of the above-mentioned antibodies are also within the scope of the present invention. That is, the antibody of the present invention prepared as described above can be labeled and used.
- the types of antibody labeling and labeling methods are known to those skilled in the art.
- enzyme labels such as horseradish peroxidase or alkaline phosphatase
- fluorescent labels such as FITC (fluorescein isothiocyanate) or TRITC (tetramethylrhodamine B isothiosinate)
- colloidal metals and colored latex
- labeling with a coloring substance such as, affinity labeling such as biotin, and isotope labeling such as 125I .
- Analysis using the labeled antibody of the present invention such as an enzyme antibody method, an immunohistochemical staining method, an immunoblot method, a direct fluorescent antibody method or an indirect fluorescent antibody method, can be performed by methods well known to those skilled in the art.
- the present invention further relates to a method of screening for a substance that promotes or suppresses the function of the protein or antibody using the TRAF3-binding protein of the present invention or an antibody thereof.
- a substance that promotes or suppresses intracellular signal transduction via TRAF 3 is selected.
- Such a screening system can be constructed, for example, as follows. An expression vector having the gene of the present invention is constructed, and this expression vector is introduced into an appropriate host expressing TRAF3. In the resulting transformant, both TRAF 3 and the protein of the present invention are expressed, and intracellular signal transduction proceeds through the interaction of both in the presence of an appropriate ligand.
- test substance can be added to the screening system constructed as described above. If the progress of intracellular signal transduction is inhibited when a test substance is added, the test substance is a substance that inhibits the interaction between the protein of the present invention and TRAF 3 (that is, the TRAF 3 binding protein of the present invention). (A substance that suppresses the function of). Conversely, if intracellular signal transduction is activated when a test substance is added, the test substance is a substance that activates the interaction between the protein of the present invention and TRAF3 (the TRAF3-binding substance of the present invention). (A substance that promotes the function of a protein).
- test substance any substance can be used, and its type is not particularly limited.
- specific examples of the test substance may be a low-molecular-weight synthetic compound, a natural product extract, or a compound library, a phage display library, or a combinatorial library. Construction of compound libraries is known to those skilled in the art, and commercially available compound libraries can also be used.
- the TNF ligand family is known as one of the most versatile cytokines that induces a number of cellular responses, including cytotoxicity, antiviral activity, immunomodulatory activity, and transcriptional regulation of several genes.
- the response of cells to TNF ligands involves not only normal physiological responses, but also enhanced apoptosis or inhibition of apoptosis.
- Abnormal apoptosis regulation has many etiologies.
- Diseases associated with cell proliferation or inhibition of apoptosis include cancer, autoimmune diseases, and viral Diseases associated with enhanced apoptosis include AIDS, neurodegenerative disease, myelodysplastic syndrome, ischemic disease, including infection, inflammation, graft-versus-host disease, acute graft rejection, and chronic graft rejection.
- the TRAF 3 binding protein of the present invention does not belong to the TNF receptor superfamily, it binds to TRAF 3 and thus is involved in chronic and acute inflammation involving the TNF receptor Z ligand superfamily, arthritis, sepsis, and autoimmunity. disease
- the substance that promotes or suppresses the function of the TRAF3-binding protein of the present invention obtained by the above-mentioned screening method is useful as a medicament for treating and / or preventing such diseases.
- the present invention also relates to a medicament containing, as an active ingredient, a substance that promotes or suppresses the function of the TRAF3-binding protein of the present invention obtained by the above-described screening method.
- the medicament of the present invention can be used, for example, for preventing or treating a disease associated with abnormal intracellular signal transduction via TRAF3.
- the medicament of the present invention generally contains, as an active ingredient, a substance that promotes or suppresses the function of the TRAF3-binding protein of the present invention, and further contains a pharmaceutical additive (eg, a carrier, an excipient, etc.) ) Is provided in the form of a pharmaceutical composition comprising:
- the route of administration of the medicament of the present invention is not particularly limited, and may be oral administration or parenteral administration (for example, intramuscular administration, intravenous administration, subcutaneous administration, intraperitoneal administration, mucosal administration to the nasal cavity, etc., or inhalation administration). Either may be used.
- parenteral administration for example, intramuscular administration, intravenous administration, subcutaneous administration, intraperitoneal administration, mucosal administration to the nasal cavity, etc., or inhalation administration. Either may be used.
- the form of the medicament of the present invention is not particularly limited, and examples of preparations for oral administration include tablets, capsules, fine granules, powders, granules, solutions, syrups, and the like.
- Formulations for parenteral administration include, for example, injections, drops, suppositories, inhalants, transmucosal absorbers, transdermal absorbers, nasal drops, ear drops, and the like.
- the dose of the medicament of the present invention can be appropriately selected in consideration of the gender, age or weight of the patient, the severity of symptoms, the administration purpose such as prevention or treatment, or the presence or absence of other complications.
- the dosage is generally between 0.000 lg / kg body weight Z days and 1 000 ⁇ g / kg body weight Z days, preferably between 0.001 g / kg body weight / day and 100 ug / kg body weight / day. It is.
- a method for diagnosing a disease by measuring the level of the protein of the present invention further comprises measuring the level of the protein of the present invention in a biological component, and further comprises intracellular signal transduction via TRAF3.
- the present invention relates to a method for diagnosing a disease associated with abnormalities of the body.
- the protein of the present invention may be involved in various diseases related to apoptosis enhancement or apoptosis inhibition. Therefore, by measuring the activity or the amount of the protein of the present invention in a living body, it becomes possible to diagnose a disease related to abnormal TRAF3-mediated intracellular signal transduction.
- the level of the protein of the present invention can be measured according to a conventional method known to those skilled in the art. For example, the level of the protein of the present invention may be measured by an immunological method using an antibody that recognizes the protein of the present invention. May be performed by measuring the amount of nRNA.
- A- 1 Screening of protein-protein interaction using yeast DNA encoding full-length TRAF 3 was used as a bait in the CytoTrap® two-hybrid system (Stratagene, La Jolla. CA).
- the yeast cdc 2511 strain (a temperature-sensitive mutant of the dc25 gene) used in this system has the following genotypes: MAT aura 3, lys 2, leu 2, trpl, his 200, adel 01, cdc 25—2, GAL +.
- a library of hybrid proteins of the myristylation signal sequence and cDNA fragments from WE HI 231 cells was constructed in plasmid pMry. Screening was performed without modification as recommended by the manufacturer.
- yeast strain was grown at 25 ° C in YPAD medium or Burkholder's minimal medium (BMM) supplemented with appropriate additives [Sato, T., et al., (1995) FEBS Lett. 358, 113-118] and by the lithium acetate method.
- the yeast transformants were grown on BMMZ galactose plates at 25 ° C for 2 days, followed by growth at 37 ° C. Pick up colonies that grew at 37, which are thought to express a myristylated protein that interacts with TRAF 3, and grew at 37 ° C on BM MZ glucose plates and BMM / galactose plates. Tested.
- a library plasmid (pMry incorporating cDNA) was isolated from a clone exhibiting galactose-dependent growth (expression of cDNA integrated into pMyr depends on galactose) at 37 ° C., and plasmid pS os " Cdc 25 H cells were re-transformed with pSosZ collagenase as TRAF 3 or as a negative control Sequence of a plasmid that suppresses the cdc 25H phenotype only in the presence of pSos / TRAF 3 DNA sequencing was performed on an Applied Biosystems automated DNA sequencer, ABI PRISM 310 Genetic Analyzer (Foster, CA) A-2 Northern Blot Hybridization
- RNA prepared from mouse tissues (C 3H / He n C rj) by the acidic guanidine phenol chromatography method was separated on a 1% agarose gel containing formaldehyde, and Hybond (20 XS SC) was used.
- Hybond (20 XS SC) was used.
- Hybrida I See Chillon probe was prepared from the gel purified DNA fragments were radiolabeled with the random primed method with [shed one 32 P] d CT P (Amersham Pharmacia).
- Blots were hybridized at 42 ° C in a solution containing 5X SSC, 5X Denhardt, 0.1% SDS, 50% deionized formamide, and 100 ⁇ g Zm1 salmon sperm DNA. I let it. After hybridization, the blot was incubated at room temperature with 2XSSC and 0.1% SDS, followed by 0.133 at 65 ° C. Washed with 0.1% SDS. The blot was dried and analyzed using BAS 2500 (Fuji Ltd., Tokyo. Japan).
- T3BP T3BP expression construct
- the appropriate region of mouse T3BP is amplified with PCR and utilizes the EcoRI and XhoI restriction sites to generate pcDNA 3.1 (-) myc his version B. (Invitrogen, Carlsbad, CA) to obtain pcDNA / T3BP.
- T3BP was expressed as a C-terminally labeled MYC fusion protein.
- the full-length coding region was amplified with PCR and pEGFP_N2 (Clontech, California, CA) using EcoRI and XhoI restriction sites. ) To obtain pEGFP / T3BP.
- Mammalian expression vectors encoding FLAG-labeled mouse TRAF 2 and TRAF 3 were generated by a PCR-based method.
- the human fetal kidney-derived 293 cells consisted of 10% pup serum (HyClone, Logan, UT), 100 OU / m1 penicillin and 100 ⁇ g / m1 streptomycin (GIBC0-BRL , Grand Island, NY) in Eagle's minimal essential medium. WEH I 2 3 1 Cells 1 0% fetal ⁇ Shi serum (HyClone), 5. 5 X 1 0 5 M 2-mercapto Toetanonore, 1 0 0U / m 1 penicillin and 1 0 0 g / m 1 scan Maintained in RPM 1 -164 medium containing treptomycin (GIBC0-BRL).
- the cells were seeded in 10 cm culture dishes at a concentration of 10 6 cells / dish, and cultured 2-3 days. Subsequently, the cells were transfected using a standard calcium phosphate co-precipitation method using a commercial solution (Eppendorf-5 Prime, Inc., Boulder, CO).
- the GST fusion protein was expressed in E. coli (BLR) using the pGEX vector (Amersham Pharmacia) after IPTG induction and purified on daltathione beads (Amersham Pharmacia).
- FLAG-labeled TRAF 2, TRAF 3, TRAF 5, and TRAF 6 were expressed in 293 cells.
- Cell lysates were prepared from transfection cells by using E1A buffer (50 raM HEPES [pH 7.6], 250 mM NaCl, 0.1% NP-40 and 5 mM EDTA) as lysing agent. The cell lysate was cleared and incubated with 2 ⁇ g of GST or GST fusion protein immobilized on daltathione beads.
- the glutathione beads were thoroughly washed with E1A buffer. Samples were subjected to 10% SDS-polyacrylamide gel electrophoresis and transferred to PVDF membrane. After blocking, the membrane was treated with an anti-FLAG M2 antibody, and a 5,000-fold diluted horseradish peroxidase-conjugated secondary antibody (Bio-Pharma) according to enhanced chemiluminescence protocol (ECL, Amersham Pharmacia). Rad) was used to detect immunoreactive proteins. TRAF 3 invitro transcription and translation and 35-S methionine labeling were detected by fluorography using the T7 link transcription and translation system (Amersham Pharmacia).
- the cells were detached from the plate in PBS containing 5 mM EDTA, and washed three times using the same buffer.
- the cells were lysed in 1 ml of E1A buffer at 4 ° C. for 10 minutes.
- the cell lysate was centrifuged and the supernatant was used as a cell extract.
- the cell extract was incubated with anti-FLAG M2 antibody, anti-MYC9E10 antibody or control antibody at 4 for 2 hours, followed by treatment with Protein G Sepharose FF (Amersham Pharmacia). Use these Sepharose beads as E Washed thoroughly with 1 A buffer. Samples were subjected to 10% SDS-polyacrylamide gel electrophoresis and immunoreactive proteins were detected using anti-FLAG M2 or anti-MYC9E10 antibodies as described above.
- HEK293 cells cultured on cover slips were transfected with various constructs. After 24 hours, the cells were fixed in PBS containing 3.7% formalin for 10 minutes at room temperature. Cells were washed three times with PBS and treated with 0.2% Triton X-100 in PBS for 5 minutes at room temperature. After blocking with skim milk, it is combined with various primary antibodies such as anti-FLAG M2 monoclonal antibody or anti-MYC 9E10 antibody (Sigma), and then with Cy5 binding secondary antibody (Jackson ImmunoReseach Laboratories, Inc.). The cells were incubated together. Cells were washed three times with PBS and mounted on glass slides.
- the bound FITC-phalloidin was extracted with methanol for 1 hour on ice.
- the fluorescence intensity was measured using a spectrometer F-3010 (Hitachi Ltd., Tokyo, Japan) at an excitation wavelength of 488 nm and an emission wavelength of 51 Onm. The results are compared to the control transfection And expressed as a relative fluorescence intensity calculated from the ratio of the fluorescence intensity of the cells.
- the Saccharomyces cerevisiae cdc 25H strain contains a temperature-sensitive point mutation in the cdc 25 gene, which inhibits host growth at 37 ° C, but has a permissive temperature (25 ° C). C) is normal.
- the cdc25 gene encodes a guanyl nucleotide converting factor that binds to RAS and activates cells to induce cell growth.
- the system used in this example utilizes the ability of human S os to complement the cdc 25 defect and activate the yeast RAS signaling pathway; hS os fusion protein (h S os -TRAF 3 ) Is expressed and localized to the plasma membrane via protein-protein interaction, the cdc 25H strain also grows at 37.
- Yeast containing plasmid pSos / TRAF3 was transformed using a WEHI I 231 cell cDNA expression library that was localized to the plasma membrane by fusing to the myristylation signal. Approximately 2 ⁇ 10 5 transformants were grown on BMM / galactose plates at 25 ° C. for 2 days and then transferred to a 37 ° C. incubator.
- Colonies that grew at 37 ° C were picked and tested for growth on BMMZ glucose and BMMZ galactose plates at 37 ° C.
- Library plasmids were isolated from clones that exhibited galactose-dependent growth at 37 ° C and retransformed into cdc 25H cells using pSos / TRAF3 or pSos / collagenase as a negative control.
- Nine cDNAs were obtained that suppressed the cdc 25H phenotype only in the presence of pSos / TRAF3.
- clone 3 coded for part of the novel protein.
- FIG. 1A shows the amino acid sequence deduced from the nucleotide sequence of full-length T3BP cDNA. The sequence encoded by clone 3 is underlined. Shaded boxes indicate putative transmembrane domains.
- T3 BP cDNA identified a sequence reported as a flanking proviral sequence acquired by somatic cells in mouse leukemia and lymphoma (AF 193161). It turned out to include.
- human B cell maturation factor (BCMA) had significant sequence similarity to T3BP, with 28% identity and 42% similarity to T3BP.
- Hydropathy plots generated using the Tmpread program suggested that T3BP had a putative transmembrane region (amino acids 77-97).
- PROS ITE analysis identified an N-glycosylation site (amino acids 23-26) and an N-myristoylation site (amino acids 81-86).
- PSORT analysis suggested that this protein had a type I membrane protein conformation and was located at the plasma membrane.
- T3BP The expression pattern of T3BP was examined by Northern blot hybridization using WEH I 231 cells of six kinds of tissues. The results are shown in FIG. 1B.
- the blot was hybridized with a 200 b T3BPc DNA probe. The position of the ribosome RNA is shown on the left.
- the T3BP gene showed about 2 kb mRNA in WEH I 231 cells. However, T3BP mRNA was not detected in the other mouse tissues tested.
- clones 3 and 10 were expressed as GST fusion proteins and tested for binding to TRAF 2 or TRAF 3 in a GST pull-down assay.
- Cell lysates of 293 cells overexpressing FLAG-labeled TRAF 2 or TRAF 3 were incubated with GST-clone 3, GST-clone 10, or GST alone, and the TRAF bound to the GST fusion protein was converted to daltathione-sepharose. And settled.
- the TRAF was separated by SDS-PAGE and detected by immunoblotting using an anti-FLAG M2 antibody.
- the expression level of FLAG-tagged TRAF in the cell lysates was also monitored by ImNob titration with an anti-FLAG M2 antibody. The results are shown in FIG. 2A.
- clone 3 binds preferentially to TRAF 3 over TRAF 2.
- G'ST clone 10 interacts similarly with TRAF 2 and TRAF 3. Sequence analysis of clone 10 reveals that this clone contains the consensus sequence of the TRAF binding domain (PXQXT / S, amino acids 583-587), mnb protein kinase homolog mp86 (D yrk; MMU 58497, amino acids 284-763) Turned out to code part. However, clone 3 does not contain this sequence.
- GST pull-down assay was performed in the same manner. As shown in Fig. 2B, GST-T3 BP (clone 3) bound the most strongly to TRAF 3 compared to other TRAFs.
- TRAF 3 and T3BP were analyzed by co-immunoprecipitation assay in mammalian cells. The results are shown in FIG. 2C.
- 293 cells were transiently transfected with an expression vector encoding MYC-labeled T3BP (full-length T3BP containing a C-terminal MYC peptide epitope) and FLAG-labeled TRAF3.
- Cell extracts were prepared and immunoprecipitated (IP) using anti-MYC9E10 antibody, anti-FLAG M2 antibody (anti-FLAG monoclonal antibody), or control mouse IgG.
- Coprecipitate FLAG—TRAF 3 or MYC—T 3 BP Detection was performed by immunoblotting analysis using anti-FLAG M2 antibody (top of FIG. 2C) or anti-MYC 9E10 antibody (bottom of FIG. 2C), respectively.
- the expression levels of T3BP and TRAF3 in the cell lysates were also measured by immunoblotting using anti-MYC 9E10 or anti-FLAG M2 antibodies, respectively.
- FIG. 2C shows the location of T3BP and TRAF3. The positions of the heavy and light chains of Ig are also shown.
- the anti-MYC antibody shows multiple bands (35-50 kDa) larger than those predicted from the amino acid sequence in lysates of transfected cells with the MYC-labeled T3BP expression plasmid.
- T3BP precipitated by FLAG-labeled TRAF3 is detected at a position of about 40 kDa (figure below).
- TRAF3 precipitated by MYC-labeled T3BP is detected at a position of about 64 kDa. (Upper figure).
- FIG. 3C shows a schematic of the primary structure of mouse TRAF3.
- T3BP T3BP binding protein
- various truncation mutants of T3BP were expressed in Escherichia coli as GST fusion proteins and jinvitro-transcribed 'translated, 35S-methionine-labeled TRAF3.
- T3BP bound to the GST fusion protein was precipitated with daltathione sepharose, separated by SDS-PAGE and detected by fluorography.
- FIG. 4A it was found that the C-terminal portion including the 151st and subsequent amino acids of T3BP was required for interaction with TRAF3.
- FIG. 4C shows the primary structure of T 3 BP and its TRAF 3 binding region (TM is transmembrane region).
- T3BP To examine the function of T3BP, its organelle localization was examined by fluorescence microscopy.
- the 293 cells cultured on the cover glass were temporarily transfected with pEGFP-N2 (control plasmid; left) or PEGFP / T3BP (£ 0? Labeled 3: 6? Expression plasmid; right). . After 24 hours, cells were fixed in 3.7% formalin.
- the fluorescence of EGFP was imaged using a confocal laser single-scanning microscope. The results are shown in FIG. 5A. As shown in FIG. 5A, the expression of EGFP-labeled T3BP induced a morphological change.
- FIG. 5B-b FLAG-labeled TRAF3 was visualized around the nucleus in cells co-expressing EGFP and FLAG-labeled TRAF3 (FIG. 5B-b).
- FLAG-labeled TRAF3 was observed on the cell surface and spike where EGFP-labeled T3BP was localized (Fig. 5B—e).
- FIG. 6B To confirm that T3BP increases cellular Factin content, the cellular distribution of Factin in cells expressing MYC-labeled T3BP was observed (FIG. 6B). Specifically, 293 cells cultured on a cover glass were transformed into pEGFP-N2 and pcDNA (Fig. 6B-a), or pEGFP-N2 and pcDNA / MYC-T3BP (Fig. 6B-b). ). After 24 hours, cells were fixed in 3.7% formalin and treated with 0.2% TritonX-100. After blocking, cells were stained with Rhodamine-Phalloidin. The fluorescence from EGFP (green) and the fluorescence from rhodamine (red) were imaged using a confocal laser single-scanning microscope. The bar is 50m.
- MYC-labeled T3BP expression caused a change in cell shape, and the spikes induced by T3BP were stained with rhodamine-monophaloidin.
- T3BP TRAF3-binding protein
- MIP-T3 is identified as a TRAF3-specific TRAF-binding protein, and TRAF3 binds to microtubules by binding MIP-T3 to microtubules and collecting TRAF3 into microtubules (Ling , L., other, (2000) J. Biol. Chem . 275, 23852-23860) 0 nucleoporins also T RAF 3 It was identified as a specific TRAF binding protein (Gamper, C., et al., (2000) Mol. Immunol.
- TRAF-binding proteins specific to a single factor in the TRAF family is likely to involve excessive or specific TRAFs, especially in the signaling cascade, and the diversity of the roles of individual TRAF proteins Important from the point of view.
- T3BP has significant sequence similarity to human B CMA belonging to TNFR superfamily as the 17th factor [Madry C., et al., (2000) Int. Immunol. 10, 1693 1702] .
- T3BP expression was restricted to specific stages of the B cell lineage, as in the case of B CMA [Laabi, Y., et al. (1992) EMBO J. 11, 3897-3904; Laabi, Y., et al. (1994) Nucleic Acid Res. 22, 1147-1154], and may be distributed on the cell surface (Fig. 1B and Fig. 5B).
- T3BP tumor necrosis factor receptor
- the novel TRAF 3 binding protein revealed by the present invention is a recently reported specific receptor for BAFF [B cell activation factor from the TNF family (BAFF)] [Thompson, JS, et al., (2001) Science 293, 2108-2111].
- BAFF B cell activation factor from the TNF family (BAFF)]
- Thompson, JS et al., (2001) Science 293, 2108-2111.
- BAFF B cell activation factor from the TNF family (BAFF)]
- BAFF B cell activation factor from the TNF family
- mice expressing BAFF at high levels express mature B cell hyperplasia and whole body.
- Symptoms of systemic lupus erythematosus suggest that it is related to autoimmune diseases by the proliferation of autoreactive B cells [Mackay, F., et al., (1999) J. Exp. Med.
- TRAF 3 has an important function in the intracellular signal transduction system of 8-cell proliferation via 8.
- Therapeutic agents for autoimmune diseases that not only regulate the interaction between BAFF and TRAF3-binding B-cell-specific receptor but also regulate the interaction between TRAF3-binding B-cell-specific receptor and TRAF3 The development of is expected.
- a novel signaling molecule that binds to TRAF3 has been identified.
- a gene encoding a signal transduction molecule that binds to TRAF 3 was cloned.
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Description
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| Application Number | Priority Date | Filing Date | Title |
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| EP02701634A EP1365024A4 (en) | 2001-02-28 | 2002-02-28 | TRAF3 BINDING, B-CELL SPECIFIC RECEPTOR |
| US10/469,420 US20040170997A1 (en) | 2001-02-28 | 2002-02-28 | Traf3-binding b-cell-specific receptor |
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| JP2001055119 | 2001-02-28 | ||
| JP2001-055119 | 2001-02-28 |
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| WO2002072827A1 true WO2002072827A1 (fr) | 2002-09-19 |
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| WO2000018959A1 (en) * | 1998-09-17 | 2000-04-06 | The Trustees Of Columbia University In The City Of New York | Trex, a novel gene of traf-interacting ext gene family and diagnostic and therapeutic uses thereof |
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| UA83458C2 (uk) * | 2000-09-18 | 2008-07-25 | Байоджен Айдек Ма Інк. | Виділений поліпептид baff-r (рецептор фактора активації в-клітин сімейства tnf) |
| ES2329012T3 (es) * | 2000-11-07 | 2009-11-20 | Zymogenetics, Inc. | Receptor del factor de necrosis tumoral humano. |
| BR0211614A (pt) * | 2001-08-03 | 2006-10-31 | Genentech Inc | polipeptìdeo tacis e br3 e empregos dos mesmos |
-
2002
- 2002-02-28 EP EP02701634A patent/EP1365024A4/en not_active Withdrawn
- 2002-02-28 WO PCT/JP2002/001849 patent/WO2002072827A1/ja not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000018959A1 (en) * | 1998-09-17 | 2000-04-06 | The Trustees Of Columbia University In The City Of New York | Trex, a novel gene of traf-interacting ext gene family and diagnostic and therapeutic uses thereof |
Non-Patent Citations (3)
| Title |
|---|
| LEE S.Y. ET AL.: "TRAF-interacting protein (TRIP): A novel component of the tumor necrosis factor receptor (TFNR)- and CD30-TRAF signaling complexes that inhibits TRAF2-mediated NF-kappaB activation", J. EXP. MED., vol. 185, no. 7, 1997, pages 1275 - 1285, XP002951590 * |
| ROTHE M. ET AL.: "I-TRAF is a novel TRAF-interacting protein that regulates TRAF-mediated signal transaction", PROC. NATL. ACAD. SCI. USA, vol. 93, 1996, pages 8241 - 8246, XP000608730 * |
| SATO TAKAAKI: "3. 1. 7 TNF/NGF juyotai family no joho dentatsu kiko no kaiseki, gan saibo no hyoteki chiryo no tameno sentanteki kiban gijutsu no kaihatsu ni kansuru kenkyu (Dai i ki heisei 8 nendo - 10 nendo (1996 to 1998))", SEIKA HOKOKUSHO, July 2000 (2000-07-01), pages 364 - 373, XP002951589 * |
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| EP1365024A4 (en) | 2005-04-20 |
| US20040170997A1 (en) | 2004-09-02 |
| EP1365024A1 (en) | 2003-11-26 |
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