WO2004005510A1 - 新規Nogo受容体様ポリペプチドおよびそのDNA - Google Patents
新規Nogo受容体様ポリペプチドおよびそのDNA Download PDFInfo
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- WO2004005510A1 WO2004005510A1 PCT/JP2003/008469 JP0308469W WO2004005510A1 WO 2004005510 A1 WO2004005510 A1 WO 2004005510A1 JP 0308469 W JP0308469 W JP 0308469W WO 2004005510 A1 WO2004005510 A1 WO 2004005510A1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6893—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids related to diseases not provided for elsewhere
- G01N33/6896—Neurological disorders, e.g. Alzheimer's disease
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7088—Compounds having three or more nucleosides or nucleotides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
- A61P21/04—Drugs for disorders of the muscular or neuromuscular system for myasthenia gravis
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- 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
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
- A61P25/16—Anti-Parkinson drugs
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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
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2217/00—Genetically modified animals
- A01K2217/05—Animals comprising random inserted nucleic acids (transgenic)
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2217/00—Genetically modified animals
- A01K2217/07—Animals genetically altered by homologous recombination
- A01K2217/075—Animals genetically altered by homologous recombination inducing loss of function, i.e. knock out
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
Definitions
- the present invention relates to a novel polypeptide having a similar structure to the Nogo receptor and involved in diabetes development and nerve regeneration, a polynucleotide encoding the polypeptide, a complementary polynucleotide to the polynucleotide, A vector containing a polynucleotide, a transformant transformed with the vector, an antibody recognizing the polypeptide, a ligand for the polypeptide and a method for screening a substance utilizing the polypeptide, and a method for screening the substance.
- the present invention relates to peptides and the use of the polynucleotides as markers for neurological diseases and diabetes. Background art
- Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis.
- Neurodegenerative diseases are various types of degenerative changes, centered on nerve cells, and are defined as a group of neurological disorders for which no obvious cause is found, such as vascular disorders, infections, and poisoning.
- a typical disease is Alzheimer's disease that affects the cerebral cortex (Experimental Medicine, 19, 2256 (2001).).
- Nog0 and Nogo receptors have important functions (Nature). , 18, 409 (2001).).
- Nogo binds to the Nogo receptor, which inhibits axonal outgrowth of nerve cells, making regeneration difficult in adults, and expression of Nogo and Nogo receptors during fetal life. It is said that reproduction is likely to occur because of the weakness of the sound (Neuron, 30, 11 (2001).).
- the molecular functions of nerve cell regeneration including the functions of these molecules, have not been analyzed in detail, and their elucidation has been awaited. Disclosure of the invention
- An object of the present invention is to provide novel polypeptides and polynucleotides useful for detecting diseases such as neurological diseases and diabetes. Further, the present invention provides a therapeutic agent for diabetes and a neurological disease using the polypeptide, agonist and its inhibitor.
- a novel gene involved in insulin resistance in skeletal muscle For the purpose, as a result of diligent research, a novel gene encoding a Nogo receptor-like novel polypeptide (39C7) was found. As a result of further research, it was found that the expression of the gene is increased by dietary restriction and exercise in skeletal muscle of insulin-resistant model rats, and that it is specifically expressed in brain and skeletal muscle in human tissues.
- the present inventors have found that the polypeptide and polynucleotide of the present invention are most strongly expressed in the cerebral cortex in the brain and confirmed that the polypeptide and polynucleotide of the present invention are useful for the detection and treatment of diabetes and degenerative diseases, and completed the present invention.
- the present invention
- polypeptide having an amino acid sequence represented by Gly at position 22 to Arg at position 441 of SEQ ID NO: 2, or a salt thereof;
- polypeptide or a salt thereof according to (1) which comprises an amino acid sequence represented by Arg from position 1 to position 441 of SEQ ID NO: 2;
- polypeptide of (3) or a salt thereof which comprises an amino acid sequence represented by Arg from position 1 to position 445 of SEQ ID NO: 4;
- polypeptide comprising an amino acid sequence having at least one mutation selected from deletion, substitution or addition in the amino acid sequence according to any one of (1) to (4) above; Or a salt thereof;
- polypeptide according to any one of (1) to (5) above which is used as a diabetes marker, a neurodegenerative disease marker, a therapeutic agent for diabetes, or a therapeutic agent for neurodegenerative disease;
- the polynucleotide of the above-mentioned (7) which comprises a base sequence represented by the 1st to 4th G to the 143rd C of SEQ ID NO: 1;
- polynucleotide of the above-mentioned (7) which comprises a nucleotide sequence represented by 107th A to 1441th C of SEQ ID NO: 3;
- (21) A method for detecting diabetes or a neurodegenerative disease associated with the polypeptide according to any one of claims 1 to 5, wherein the method according to (20) is used.
- (22) A kit for detecting diabetes or a neurodegenerative disease, characterized by using the method described in (20) above;
- a kit for detecting diabetes or neurodegenerative disease which comprises using the method according to (23);
- kits for screening for a substance binding to the polypeptide which comprises the polypeptide according to any one of (1) to (5) above;
- (31) a binding substance, which is obtained by the method for screening a binding substance according to (29); (32) a method for screening a substance that regulates the binding activity of the binding substance according to the above (31) and the polypeptide according to any one of the above (1) to (5), comprising the following steps:
- (33) a kit for screening for a binding activity regulating substance, comprising the polypeptide according to any one of (1) to (5) and the binding substance according to (30); ) A binding activity regulator, which is obtained by the screening method described in (33) above;
- a pharmaceutical composition comprising the antibody according to (19), the binding substance according to (31), the binding activity regulating substance according to (34), or the expression regulating substance according to (37); ,
- a pharmaceutical composition comprising:
- a method for treating a neurodegenerative disease or diabetes comprising administering the pharmaceutical composition according to any one of (40) to (43);
- FIG. 1 is a schematic diagram showing the structure of human 39 C7 polypeptide.
- Positions 1 to 21 of the amino acid sequence are the predicted signal peptide region (SP; Signal 1 Peptide), and positions 22 to 305 are the leucine-rich repeats of the Nogo receptor. Region (LRR; Leucine-richreeat doma in), which has nine similar regions. LRR-1, LRR-2, LRR-3, LRR-4, LRR-5, LRR-6, LRR-7, and LRRCT (Lecine richrepea Ctermi nal doma in).
- positions 414 to 441 have a structure that is expected to be a glucosylphosphatidylinositol-luan force-1 (GPI anchor) protein.
- Fig. 2 shows the expression level of 39c7 polypeptide mRNA in normal human tissues.
- FIG. 3 shows the expression level of 39c7 polypeptide mRNA in human brain.
- Northern blot analysis was performed on various regions in the human brain, and the results are shown as relative expression levels, where the expression level of 39c7 polypeptide mRNA in the whole brain was defined as 1.
- FIG. 4 is a graph showing changes in expression of r39c-7 due to exercise and food restriction.
- FIG. 4 shows the results of fluctuations in the expression of 39c7 polypeptide mRNA in insulin-resistant model rat skeletal muscle. Quantitative PCR analysis using Taq-MAN was performed, and the relative expression level is shown as the expression level of 39c7 polypeptide mRNA in a model plate showing insulin resistance.
- FIG. 4 is a graph showing changes in expression of r39c-7 due to exercise and food restriction.
- FIG. 4 shows the results of fluctuations in the expression of 39c7 polypeptide mRNA in insulin-resistant model rat skeletal muscle. Quantitative PCR analysis using Taq-MAN was performed, and the relative expression level is
- FIG. 5 is a diagram showing the results of estanblot of h39C7 forced expression cells.
- FIG. 6 is a graph showing glucose uptake ability in h39C 7 forced expression cells. The vertical axis shows CCPM / DNA (ng), and the horizontal axis shows insulin concentration (nM).
- the polypeptides of the present invention include ⁇ a polypeptide or a salt thereof comprising the amino acid sequence represented by Gy at position 22 to Arg at position 411 of SEQ ID NO: 2 '' and ⁇ SEQ ID NO: 2 ''. And a polypeptide or a salt thereof comprising an amino acid sequence represented by Arg at position 41 to position 41 from the described Met. Further, “a polypeptide containing an amino acid sequence represented by Arg at position 22 to Ser 45 at position 22 described in SEQ ID NO: 4 or a salt thereof” and “polypeptide at position 1 described in SEQ ID NO: 4” A polypeptide containing an amino acid sequence represented by Arg at position 445 from Met or a salt thereof ”.
- salts a physiologically acceptable salt with an acid or a base can be mentioned, and a physiologically acceptable acid addition salt is particularly preferable.
- examples of such salts include salts with inorganic acids such as hydrochloric acid, phosphoric acid, hydrobromic acid, and sulfuric acid, or acetic acid, formic acid, propionic acid, fumaric acid, maleic acid, succinic acid, tartaric acid, and quenched acid. Acids, malic acid, oxalic acid, benzoic acid, salts with organic acids such as methanesulfonic acid and benzenesulfonic acid are used.
- the polypeptide of the present invention is characterized in that, in the amino acid sequence described in either SEQ ID NO: 2 or 4, one or several amino acids are selected from the group consisting of deletion, substitution or addition. Both consisting of an amino acid sequence with one mutation and a marker for neurodegenerative disease or diabetes And polypeptides or salts thereof which are the most effective.
- This polypeptide is a marker for neurodegenerative disease or a marker for diabetes.
- the one or several amino acids are amino acids of such a number that can be deleted, substituted or added by site-directed mutagenesis or the like, and 50 or less, preferably 30 or less, Preferably, it means 20 or less, more preferably 10 or less amino acid residues.
- the polypeptide of the present invention has a biological activity also by deletion, substitution, or addition, and is a polypeptide having a function as a marker for neurodegenerative disease or a marker for diabetes;
- a polypeptide having at least 60% homology to the amino acid sequence represented by No. 4, preferably a polypeptide having 80% or more homology, more preferably having a homology of 95% or more Polypeptides can be mentioned.
- a “neurodegenerative disease marker” is a substance used to detect a neurodegenerative disease. Certain mRNAs or proteins can be "neurodegenerative disease markers" if their expression is increased or decreased in neurodegenerative diseases.
- Neurodegenerative diseases are various types of degenerative changes, centered on neuronal cells, and are a group of neurological diseases with no apparent cause, such as vascular disorders, infections, and poisoning. Examples of the “neurodegenerative disease” include Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis.
- the “degenerative diseases of the nervous system” may be any substance capable of detecting a neurodegenerative disease, and the polynucleotides, polypeptides, antibodies and the like of the present invention can be used.
- Diabetes markers are substances used to detect diabetes. Certain mRNAs or proteins can be “diabetes markers” if their expression is increased or decreased in diabetes.
- therapeutic agent for a neurodegenerative disease is a substance used for treating a neurodegenerative disease. Since the polypeptide of the present invention is expressed in large amounts in the brain, the polypeptide, polynucleotide and antibody of the present invention are considered to be useful for treating various neurodegenerative diseases. "Diabetes treatment” is a substance used to treat diabetes. Since the polypeptide of the present invention is expressed in skeletal muscle and its expression fluctuates due to exercise and food restriction, The polypeptides, polynucleotides, antibodies and the like of the present invention are considered to be useful for treating diabetic diseases.
- the polynucleotide of the present invention is a DNA encoding the polypeptide of the present invention, and the polynucleotide of the present invention includes ⁇ contains a nucleotide sequence represented by 174 G to 143 C of SEQ ID NO: 1 '' A polynucleotide comprising the base sequence represented by C from the 1st A to the 1433th C of SEQ ID NO: 1, and the 1st to the 1st A to the 1st A of the SEQ ID NO: 3 And a "polynucleotide containing a nucleotide sequence represented by C from the 107th A to 1441st C of SEQ ID NO: 3".
- the polynucleotide of the present invention also includes "a polynucleotide which hybridizes with the polynucleotide of the present invention under stringent conditions and encodes a polypeptide which is a degenerative disease marker or a diabetes marker".
- the polynucleotide of the present invention is preferably a "polynucleotide containing the base sequence represented by A to 143rd C from 174th A of SEQ ID NO: 1" or "1 ⁇ ⁇ 0th of SEQ ID NO: 3". And a polynucleotide comprising a base sequence represented by C from the A to 1441 of ".
- polynucleotide that hybridizes under stringent conditions refers to a polynucleotide selected from the polynucleotides of the present invention as a probe, which is a well-known and commonly used technique in the art, for example, colony hybridization.
- OM of NaCl using the activated membrane 0.1 to 2 times the concentration of SSC (Sa1ine) Sodium Citr ate; 150 mM sodium chloride, 15 mM sodium citrate) solution and wash the membrane at 65 ° C.
- SSC Se1ine
- Sodium Citr ate 150 mM sodium chloride, 15 mM sodium citrate
- Hybridization is performed as follows: M o 1 ecu 1 ar C l on i ng: A Lab oratory Manua l, S eco nd Edition (1 9 8 9) (Col ld Sp ri harbor Labo r at o ry Pre ss), Curent P rotocolsin Mo le cu l ar B iolo gy (1994) (Wi l ey—In tersci en c e), DNA C l on ng 1: Cole Te
- the method can be carried out according to the method described in, for example, "Chniques, A Practical Appro- ach, Sec- ond Edition (1995)" (For- ward University Press).
- sequences consisting of only adenine (A) or thymine (T) are preferably excluded from the sequences that hybridize under stringent conditions.
- polynucleotide that hybridizes refers to a polynucleotide that can hybridize to another polynucleotide under the above-mentioned hybridization conditions.
- Examples include nucleotides, preferably polynucleotides having a homology of 80% or more, and more preferably polynucleotides having a homology of 95% or more.
- the homology is determined, for example, by a search program B LAST using an algorithm developed by Al tsc hu 1 et al. (The Journal of Mallecu lar Bioloy, 215, 403-410 (1990).). By using, the similarity is indicated by the score.
- the polynucleotide of the present invention includes "oligonucleotides having the same sequence as 5 to 60 consecutive bases in the base sequence described in SEQ ID NO: 1 or 3." Such a polynucleotide is a continuous base in the nucleotide sequence of any of SEQ ID NOs: 1 and 3, for example, 5, 8, 10, 12, 15, 20, 25. Oligonucleotides having the same sequence as the base sequence consisting of 30, 40, 50, 60, etc., and oligonucleotides having a sequence complementary to the oligonucleotides and derivative oligonucleotides thereof.
- oligonucleotide for example, a phosphoric diester bond in an oligonucleotide is converted into a phosphorothioate bond or a 3,1.5, phosphoramidite bond or the like.
- Rigonucleotides derivative oligonucleotides in which cytosine in oligonucleotides is substituted with C-15-propionylcytosine or phenoxazine-modified cytosine, ribose in DNA is 2,10-propylribose or 2'-methoxyethoxyribose, etc. And the like.
- a polynucleotide is useful, for example, as a gene marker, a primer for PCR, or a probe for hybridization.
- the present invention includes a vector into which the polynucleotide of the present invention has been incorporated, a transformant transformed with the vector, and a method for producing the polypeptide of the present invention using the transformant.
- knockout animals and transgenic animals are also provided by the present invention.
- These modified animals may be any animals as long as they are mammals other than humans, and preferably include rodents such as mice, rats, hams, and guinea pigs.
- rodents such as mice, rats, hams, and guinea pigs.
- the term “antibody” is used in a meaning commonly used in the art, and includes all or fragments, derivatives, conjugates, and modifications of the antibody. Preferably, it is an antibody that recognizes the polypeptide of the present invention, more preferably, it is an antibody that specifically recognizes the polypeptide of the present invention, and further preferably, it is an antibody that recognizes monospecifically. Such antibodies can be either polyclonal or monoclonal. "Detection or quantification" of the polypeptides of the present invention can be accomplished using any suitable method, including immunological assays. Such methods include, for example, ELISA (Enzyme Linked Immunosorbent Assay), RlA (Radio Immunoassay), fluorescent antibody method, and stamp lot method. Method, immunohistochemical staining, etc. Is mentioned.
- the antibodies of the present invention can be used to detect diabetes or neurodegenerative diseases. Since the polypeptide of the present invention can serve as a marker for diabetes and a marker for neurodegenerative disease, it can be achieved by using an appropriate immunological measurement method in the same manner as the above-described detection or quantification of polypeptide. .
- the present invention also relates to a kit for detecting diabetes and / or neurodegenerative disease, comprising the antibody of the present invention.
- This kit contains at least the antibody of the present invention and the polypeptide of the present invention as a standard reagent.
- “Detection or quantification” of mRNA of the polypeptide of the present invention can be achieved by using any appropriate method including a molecular biological measurement method for measuring mRNA. Such methods include, for example, the Northern hybridization method, the dot plot method, and the RT-P method.
- the polypeptide of the present invention can serve as a marker for diabetes and a marker for neurodegenerative disease, it can be achieved by using any appropriate method including a molecular biological measurement method similar to the aforementioned detection or quantification of mRNA. And Northern blotting, dot blotting, PCR and the like.
- the present invention relates to a kit for detecting diabetes and / or neurodegenerative disease, comprising a part or all of a polynucleotide encoding the polypeptide of the present invention as a standard reagent. Since the polynucleotide of the present invention can be a diabetes marker and z or a neurodegenerative disease, the polynucleotide can be molecularly measured based on the aforementioned method for detecting a diabetes or a neurodegenerative disease. By measuring the mRNA of the polypeptide of the present invention, the expression level of the gene encoding the polypeptide of the present invention can be measured.
- any suitable method including molecular biological assays similar to the detection or quantification of mRNA described above, may be used. This can be achieved by using various methods, such as Northern blotting, dot blotting, and PCR.
- the present invention relates to a kit for measuring the expression level of a gene encoding the polypeptide of the present invention, which comprises a part or all of the polynucleotide encoding the polypeptide of the present invention as a standard reagent. Since the mRNA of the polypeptide of the present invention is expressed by the translation of the gene encoding the polypeptide of the present invention, the mRNA can be converted into a molecule based on the aforementioned method for detecting or quantifying the mHNA. Can be measured.
- the polynucleotides of the invention can be used to inhibit transcription of DNA or translation of mRNA.
- Oligonucleotides having a sequence complementary to the oligonucleotides and derivative oligonucleotides are appropriately prepared, and the DNA transcription or mRNA translation of this polypeptide is performed using antisense RNA / DNA technology well known in the art.
- the present invention also relates to a binding substance of the polypeptide of the present invention.
- Binding substance refers to any substance that binds to the polypeptide or polynucleotide of the invention. Such binding substances include, for example, low molecular substances, polynucleotides, polypeptides and the like.
- binding substance screening method of the present invention can be carried out by appropriately adapting techniques known in the art, and examples include bioassay and binding assay.
- the “kit for screening for a binding substance” of the present invention includes at least the polypeptide of the present invention or a part thereof, and the polynucleotide of the present invention or a part thereof. Using this kit, the aforementioned binding substance of the present invention can be screened by a biochemical technique.
- the present invention further relates to "binding activity modulators". "Binding activity regulation” It means that the binding activity between the peptide and the binding substance of the present invention is enhanced or decreased, and the “binding activity” is evaluated by Percent Maximum Binding (P MB).
- Binding activity modulator refers to a substance that enhances or decreases the binding activity between the polypeptide of the present invention and the binding substance of the present invention. Examples of such substances include low molecular weight substances, polynucleotides, and the like. Polypeptides and the like.
- the “screening method for a binding activity regulating substance” of the present invention can be achieved by appropriately applying a technique known in the art.
- the binding activity modulator of the present invention can be screened by the screening method of the present invention, and examples of such a method include bioassay and binding assay.
- the "screening kit for a binding activity regulating substance" of the present invention contains at least the polypeptide of the present invention or a part thereof, a polynucleotide or a part thereof.
- a binding activity modulator can be screened by a biochemical technique based on the above-mentioned method for screening a binding activity modulator.
- the present invention relates to “expression regulating substances”.
- the expression level means the level at which the protein of the present invention or mRNA is expressed in a target cell or the like.
- the expression level of the protein of the present invention can be determined by an appropriate method using the antibody of the present invention, for example, an immunological measurement method such as an ELISA method, an RIA method, a fluorescent antibody method, or an immunohistological staining method.
- the mRNA of the polypeptide of the present invention can be measured or measured by the method of measuring the mRNA of the present invention, for example, the Northern blot hybridization method, the protocol, the RT-PCR method, or the like. Can be evaluated by measuring.
- “Regulation of expression” refers to expression of the polypeptide of the present invention at the protein or mRNA level, which is evaluated by any appropriate method including the above-described immunoassay or molecular biological assay. Meaning increasing or decreasing the amount.
- “Expression modulator” increases the expression level of the polypeptide of the present invention at the protein or mRNA level, which is evaluated by any appropriate method including the above-described immunological assay or molecular biological assay. Or a substance that reduces the substance. Examples of such a substance include a low-molecular substance, a polynucleotide, and a polypeptide.
- the “expression control substance screening method” of the present invention can be achieved by appropriately adapting techniques known in the art.
- the binding activity regulating substance of the present invention can be screened by the screening method of the present invention, and examples of such a method include bioassay and binding assay.
- the “screening kit for expression regulating substance” of the present invention contains at least the polypeptide of the present invention or a part thereof, a polynucleotide or a part thereof, and the like. Using the kit of the present invention, an expression regulating substance can be screened by a biochemical technique based on the aforementioned screening method for an expression regulating substance.
- the “pharmaceutical composition” of the present invention may include at least the polypeptide, polynucleotide, antibody, binding substance, binding activity regulating substance or expression regulating substance of the present invention. It can be used for prevention or treatment of degenerative diseases, diabetes and the like.
- the “therapeutic method” of the present invention is a method for treating a specific disease associated with the polypeptide or polynucleotide of the present invention, for example, a neurodegenerative disease, diabetes, etc., and the pharmaceutical composition of the present invention. It can be treated by administering a substance.
- a method for detecting a neurodegenerative disease or / and diabetes, a kit for detecting a gene, and a pharmaceutical composition will be described.
- gene recombination techniques techniques for producing recombinant proteins in animal cells, insect cells, yeast and Escherichia coli, methods for separating and purifying expressed proteins, and analytical methods And immunological techniques are employed.
- a cDNA library is prepared from a rat tissue derived from brain and skeletal muscle or a human tissue derived from brain and skeletal muscle by a conventional method.
- Methods for preparing a cDNA library include Mo e ecu 1 ar Cl on i ng rA La bo rat ory Manua l, Sec ond Editi on (1989) (Cold S r ng Harbor Laborat ory Pr ess) and Cur r ent Pr otocolsin Mole cu l ar B iolo gy (1994) (Green Pub lis hi ng As soci at es and Wi l ey—Int er sci en c e), DNA C l in in 1: Core Techni ques, AP ractical Approch, Second Edition (1995) (Ford University Press), etc., or a commercially available kit, e.g., Puma, Suppers cript P la Examples include a method using smidstem forc DNA Synthesis and Plasmid C1oning (manufactured by Invitrogen) and a method using ZAP-cDNA Synthessis K its (manufacture
- the DNA is inserted into a cloning vector, for example, an EcoRI site of pSport 1 (manufactured by Invitrogen).
- a cloning vector for example, an EcoRI site of pSport 1 (manufactured by Invitrogen).
- E. coli ElectroMAX DH10B manufactured by Invitrogen is transformed to prepare a cDNA library.
- a clone containing the target DNA is selected from the prepared cDNA library by the following method.
- a plasmid is prepared by a method using a conventional method or a commercially available kit, for example, QIAG ENPlasmid Max Kit (manufactured by QIAGEN).
- a plasmid having a DNA fragment encoding an amino acid sequence having homology to the amino acid sequence of Nogo is selected from the cDNA library prepared above.
- a DNA fragment two or more regions where the amino acid sequence of each Nogo receptor is well conserved are found, and degenerate primers corresponding to the DNA sequence encoding the amino acid sequence of the region are designed. It can be obtained by amplifying by the P o 1 enzymease reaction (PCR) method.
- PCR P o 1 enzymease reaction
- PCR Primer A Laborato ry Manua l (1 995) (Cold Srin Harbor Laboratory Press), The 'Protocol Series' cDNA Cloning ( 1996) (Edited by Junichiro Inoue and Kentaro Senba; Yodosha) and Science, 241, 42 (19.88).
- the PCR method is described in Mo 1 ecu 1 ar Cloning: A Labo ratory Manua l, Second Editi on (1989) (Cold S pri ng Harb or Labo rt a r o ry Pre ss) and PCR Pro tocols (1989). ) (Academic Press).
- the DNA fragment thus amplified by the PCR method is inserted into an appropriate plasmid and subcloned.
- Subcloning can be performed by incorporating the amplified DNA fragment as it is or after treating it with a restriction enzyme or DNA polymerase into a plasmid vector by an ordinary method.
- vectors include pBluescript IIt SK (10), pBluescript II SK-, and pPCR-Script Amp (manufactured by Straugene Inc.) pD I RECT (Nucreic Acids Research, 18, 60 69 (1990).) PT7B1ue (Novagen), pCRII (Invitrogen), pCR—TRAP (Gene Hunter), pNoTAT7 (Eppendor f5) prime).
- a DNA fragment having an amino acid sequence homologous to a known Nogo receptor but encoding an amino acid sequence that does not completely match is selected. be able to.
- the nucleotide sequence can be analyzed by a commonly used nucleotide sequence analysis method, for example, the dideoxy method of Sanger et al. It can be analyzed with a base sequence analyzer such as one (manufactured by Applied Biosystems). Using the DNA fragment selected in this manner as a probe, the cDNA library prepared above can be subjected to hybridization analysis such as colony hybridization or plaque hybridization.
- cDNA encoding a polypeptide having homology with a known Nogo receptor can be obtained.
- probe those obtained by labeling the DNA fragment with a radioisotope such as 32 P, an enzyme such as digoxigenin, horseradish peroxidase, or the like can be used.
- Hybridization can be carried out by a commonly used method, for example, as described in Molecular Cull ing Ing: A Laborate Manual, Second Editi on (1989) (Cold Spring Harb or La bo rat o ry Pres)).
- the cDNA fragment obtained by hybridization is digested as it is or after digestion with an appropriate restriction enzyme, and then inserted into a plasmid vector by a conventional method, and a commonly used nucleotide sequence analysis method, for example, the dideoxy method of Sanger et al. Analyze the nucleotide sequence using a nucleotide sequence analyzer such as N ational Accademy of Sciences USA, 74, 5463 (1977).) Or 373 ADNA Sequencer (manufactured by Applied Biosystems).
- the desired DNA can be obtained.
- Examples of the DNA thus obtained include, for example, DNA encoding the polypeptide represented by SEQ ID NO: 2, and specifically, DNA having the base sequence represented by SEQ ID NO: 1. be able to.
- Examples of the plasmid containing the DNA of SEQ ID NO: 1 include the plasmids described in Examples described later.
- a transformant can be obtained by incorporating the obtained DNA into an appropriate expression vector to construct an expression plasmid, and introducing the expression vector into a suitable host.
- the expression vector may be any vector that can be expressed in animal cells by incorporating the cDNA. Examples of such vectors include pcDNA1.1, pcDNA1.1 / Amp, pCDM8, pREP (Invitrogen), pHM6, pHB6 (Roche Diagnostics), pKK223-3, pGEX (Amersham Biotech), pET-3, pET-1 l, pBluescript II SK ( +), pBluescriptll SK (—) (Stratagene), pUC19, pTrxFus (Invitrogen), pUC 1 18, p STV 28 (Takara Shuzo), pMAL-c2X (New England Bio Labs), pAGE 107 (Cyto ot ec hno logy, 3 (2), 133-1
- pAS3-3 JP-A-2-227075
- any method for introducing the expression vector into a host any method can be used as long as it is a method for introducing DNA.
- the electroporation method Cytotechnology, 3 (2), 133-140 (1990).
- the calcium phosphate method Japanese Unexamined Patent Application Publication No. 2-227075
- the lipofection method Proceedings of The method is described in, for example, T he Natio nal Ac adory of Sciences USA, 84, 7413 (1987) .; Viology, 52, 456 (1973).
- an appropriate cell or tissue corresponding to the expression vector can be used, and examples include animal cells.
- Animal cells used as the host include human-derived cell line Nama lwa (Burkit's lymphoma, ATCC: CRL-1432) and its sublines Nama lwaKJM-l, HCT-15 (human colon cancer cell, ATCC: CCL-225), Monkey-derived strain cells C 0 S-1 (African green monkey kidney cells (SV40 transformed cells), ATCC: CRL-1650) and CO S-7 (African green monkey kidney cells (SV40 transformed cells), ATCC: CRL-1651 ), Hamster-derived cell lines such as CHO-K1 (Chinese hamster ovary cells, ATCC: CCL-61) and HBT5637 (JP-A-63-299).
- the transformant of the present invention is cultured by a conventional method well known in the art. Transformed The culture can be carried out using a medium suitable for the host, and a liquid medium is suitable as the medium used for the culture. Specifically, MEM medium (Science, 130, 432 (1959).), D-MEM medium (Virogy, 8, 396 (1959). :), RPMI 1640 medium (The Journa loft HeAmerican Medical Association, 199, 519 (1 967) ⁇ ), YT medium, BEM medium and the like are used.
- a medium for culturing a transformant in which the host is an animal cell for example, MEM medium, D-MEM medium, RPIM medium, or the like to which an appropriate amount of fetal bovine serum (FCS) is added is used.
- FCS fetal bovine serum
- a substance that promotes the transcription activity may be contained.
- IPTG isopropyl-1-1-thio- ⁇ -D-galactopyranosine
- the medium contains nutrients necessary for the growth of the transformant, for example, glucose, amino acids, peptides, vitamins, hormones, serum, preferably FCS, calcium chloride, magnesium chloride, etc.
- a medium having any composition can be used as long as it is such a medium, and a commercially available medium can also be used. Cultivation is carried out under conditions such as pH 6. 0 ⁇ 8. 0, 25 ⁇ 4 0 ° C, 5% C0 2 presence.
- the desired DNA can be selected by using the axonal outgrowth activity of the neuron possessed by the Nogo receptor as an index and screening the protein produced by the transformant.
- the axon extension activity of a nerve cell refers to an activity of causing a morphological change of a growth cone of an axon of a nerve cell and suppressing the extension of the axon of the cell.
- the activity can be determined, for example, by morphological observation of nerve cells by microscopy, differentiation markers of growth cones, such as GAP43 (CELL, 83, 269-278 (1995)., Science, 199, 542-). 544 (1978).) Can be detected by measuring the expression level.
- GAP43 CELL, 83, 269-278 (1995)., Science, 199, 542-). 544 (1978).
- Hybridized with DNA under stringent conditions One or several amino acids were deleted by selecting DNA, compared to the amino acid sequence shown in SEQ ID NO: 2.
- a DNA encoding a polypeptide consisting of an amino acid sequence having at least one mutation selected from substitution or addition can be obtained. That is, the target DNA is obtained by selecting a DNA that hybridizes under stringent conditions to a cDNA library derived from a non-human animal, for example, mouse, rat, mouse, monkey, etc. be able to.
- the desired DNA can also be prepared by chemically synthesizing the DNA encoding the polypeptide, based on the amino acid sequence of the screened novel Sfgo receptor polypeptide.
- Chemical synthesis of DNA can be performed by methods such as the phosphate triester method, the phosphoramidite method, and the phosphonate method, and commercially available synthesis equipment such as ABI392 (manufactured by Applied Biosystems) can be used. Can also be used.
- PCR was performed using the oligonucleotides described below as sense primers and antisense primers, and using cDNA prepared from mRNA of cells expressing mRNA complementary to these DNAs as ⁇ type, PCR was performed. By doing so, the target DNA can be prepared.
- polypeptide of the present invention is Mo 1 e c u 1 a r C I
- n i ng A Lab orat ory Manua l, Sec ond Ed i t i on (1989) (Cold Spring Harb or Laborat o ry Pres s
- the polynucleotide of the present invention can be expressed in host cells and produced.
- a DNA fragment having an appropriate length containing a portion encoding the polypeptide is prepared.
- the nucleotide sequence of the portion encoding the polypeptide is prepared so as to be an optimal codon for host expression.
- the DNA is useful for improving the production rate of the polypeptide.
- the DNA fragment or full length: D NA is inserted under the control of an appropriate expression vector promoter to prepare a recombinant DNA (recombinant vector). By introducing the recombinant vector into a suitable host, a transformant producing the polypeptide of the present invention can be obtained.
- the host may be any prokaryote such as Escherichia coli, a unicellular eukaryote such as yeast, or a multicellular eukaryote such as animal cells, insect cells, and plant cells, as long as it can express the desired gene. Can also be used. Moreover, an animal individual or a plant individual can be used. An expression vector capable of autonomous replication or integration into a chromosome in a host and containing a promoter at a position suitable for transcription of a novel Nogo receptor gene is used. (i) When using prokaryotes as hosts
- the expression vector for the novel Nogo receptor gene is preferably capable of autonomous replication in a prokaryote and, at the same time, is composed of a promoter, a ribosome binding sequence, a novel Nogo receptor gene, and a transcription termination sequence.
- a gene that controls the promoter may be included.
- Examples of the expression vector include pHM6, pHB6 (Roche Diagnostics), pKK223-3, pGEX (Amersham Biotech), pSE280, pTrxFus, pUC19 (Invitrogen) PBlue scr ipt II SK (10), pBlue scr ipt II SK, 1), pET Express System on System (Stratagene), pGEMEX-1 (Promega), pQE-8 (Manufactured by Qiagen), pMAL-c2X (manufactured by New Engl and Bio 1 abs), pKYP10 (Japanese Patent Application Laid-Open No.
- any promoter can be used as long as it can be expressed in the host.
- promoters derived from Escherichia coli or phage such as trp promoter (P trp), 1 ac promoter (P 1 ac;), PL promoter, PR promoter, PSE promoter, SP01 promoter, SP02 promoter, penP promoter, etc.
- P trp trp promoter
- 1 ac promoter P 1 ac promoter
- PSE promoter PL promoter
- SP01 promoter SP02 promoter
- penP promoter etc.
- artificially designed and modified promoters such as the Ptrx2 promoter in which two Ptr> p are connected in series, the tac promoter overnight, the lacT7, 1et promoter, and the like can also be used.
- a plasmid in which the distance between the Shine-Dalgarno (SD) sequence, which is a liposome-binding sequence, and the initiation codon is adjusted to an appropriate distance, for example, 6 to 18 bases.
- SD Shine-Dalgarno
- a transcription termination sequence is not necessarily required for expression of the polynucleotide of the present invention, it is preferable to arrange a transcription termination sequence immediately below a structural gene.
- the host include prokaryotes such as *, Escherichia, Serratia, Bacii 11us, Brevibacterium, Corynebacterim, Microbacterium, Pseudomomonas, etc. Is mentioned.
- ammonia aphilum ATCC: 15354 strain as a genus of Microbacterium. And S. mephitica strains, etc., as examples of the genus Pseudomonas.
- any method for introducing a recombinant vector any method can be used as long as it is a method for introducing DNA into a host.
- an electoporation method (Nuc 1 eic A cids Research, 16, 6 12) ), The calcium phosphate method (Proceedings of National Academia of Sciences USA, 69, 211 (1972).), The protoplast method (Japanese 6 3-24 8 3 9 42), Gene, 17, 107 (1972) and Molecular & General Genetics, 1668, 11 1 (1977). The method described above can be used.
- expression vectors such as YEp13 (ATCC: 371115), YEp24 (ATCC: 37051), and YCp50 (ATCC: 3) 7419), pH S19, pHS15 and the like.
- Any promoter can be used as long as it can be expressed in yeast.
- ADH1 alcohol dehydrogenase
- PH05 acid phosphatase
- PGK1 phosphoglycerate kinase
- GAPDH Glycer aldehyde 3-phosphate dehydrogenase
- GAL 1 galactoskinase
- GAL 10 UDP galactose 4-epimerase
- MFa 1 a pheromone
- CUP 1 metal-mouth thionein
- any method can be used as long as it introduces DNA into the host.
- the electoporation method Metalsin Enzymo lo, 194, 182 (1 990).
- the spheroplast method Proceeding soft he National Ac ode em es of Sciences US A, 84, 1929 (1978).
- the lithium acetate method Journal of Bac t). , 153, 163 (1983). and Proceeding ngs of ht he Nat io lon Acad emy of Science USA, 75, 1929 (1978).
- examples of expression vectors include pcDNA1 / Amp, pcDNA3, pCDM8, pREP4 (manufactured by Invitrogen), AGE107 (Cytotec hnology, 3, 133 (1990) ), P AGE 103 (The Journa 1 of B ioc hemi stry, 101, 1307 (1 987).), P AMo, p AMo A (p AMo PR SA) (The Journa lof B iologyca 1 Chemi str, 268, 22782-22787 (1993)), pCLXSN, pCLNCX (IMGENE X), pAS3-3 (JP-A-2-22705), and the like.
- any promoter can be used as long as it can be expressed in a host.
- the promoter of the human cytomegalovirus (hCMV) IE (Immediately) gene SV40 The early promoter of Moroni's 'Mulin' Roychemia. Long of Mole oney Murine Leulene emi a Viru s. Yuichi Minal 'Repeat' promoter (Long Terina l Re e at Pr om) oter), retrovirus promoter, HSP promoter, SR ⁇ promoter and And promoters of melottinone.
- the enhancer of the IE gene of human CMV may be used together with the promoter.
- Animal cells used as hosts include human-derived cell lines HEK293 (human embryonic kidney cells, ATCC: CRL-1573) and HeLa (cervical cancer cells, ATCC: CCL-2) HBT5637 (leukemia cells, — 299), BALL-1 (leukemia cells) and HCT—15 (colorectal cancer cells), mouse-derived cell lines Sp 2 / 0— Ag 14 (mouse myeloid cells, ATCC: CRL—1 581) and NS 0 (mouse myeloid cells), monkey-derived cell line C 0 S-1 (africamidolizal kidney cells (SV40-transformed cells), ATCC: CRL-1650) and COS-7 (africamidoli monkey kidney cells (SV40-transformed cells) ), ATCC: CRL-1651), CHO-K1 (Chinese hamster ovary cell, ATCC: CCL-61) and BHK-21 (C-13) (Sicilian hamster offspring kidney cell, ATCC: CCL) -10), PC
- any method can be used as long as it can introduce DNA into a host.
- an elect-portion method (Cyto'tec hno 1 ogy, 3, 133, ( 1990)
- the calcium phosphate method Japanese Patent Laid-Open No. 22705/1990
- the Lipofexion method Proceedings oft he National Acne of Sciences, USA, 84, 7413 (1987)., Viololo).
- examples of the transfer vector include pVL1392, pVL1393, and pBlueBacIII (manufactured by Invitrogen).
- Va cu 1 o vi rus) Aut o grapha Ca lif orni a nuc lear po 1 yh edr osis vi rus (AcMNPV) Bac-NB lue DNA It is.
- Insect cell transformation methods are described, for example, in Baculovirus Expression Vector: A Laboratory Manual (1992) (W.H.
- a transfer vector containing the gene of interest and a baculovirus DNA for infection into insect cells are added to the insect cell culture solution, and the virus expressing the gene of interest, produced by recombination, infects the insect cells to infect the insect cells.
- the peptide can be expressed.
- Insect cells used as a host include Spodopt era frugiperda (spodoptera) -derived cell lines and Trichoplus ia ni (iraksakin ⁇ ⁇ ba) -derived cell lines.
- S. rugi per da S.sub.f9 ATCC: CRL-1711, ovarian cells
- S.sub.f21 ovarian cells
- T. ni-derived cell lines are High.
- Examples of the method of introducing a recombinant vector include any method that can be introduced into a host, such as Five, BTI-TN-5B1-4 (egg cell) (manufactured by Invitrogen). And the calcium phosphate method (Japanese Patent Application Laid-Open No. 22705/1990), the Lipofexion method (Proceedings of te tan io nal Ac ace io Sciences USA, 84, 7413 (1987).) And the like. In addition, as in the case of animal cells, the electoral port method (Cytotechnology, 3, 133 (1990).) Can also be used.
- tissue culture 20 (199) 4). Tissue culture, 21 (1995). Trends in Biotechnology, 15, 45 (1997).
- expression vectors include, for example, Ti plasmid, tobacco mosaic virus vector, and the like. ⁇ ⁇
- any promoter can be used as long as it can be expressed in plant cells. Examples thereof include the 35S promoter of cauliflower mosaic virus (CaMV) and the geneactin 1 promoter. Can be.
- the gene expression efficiency can be increased by introducing, for example, intron 1 of a maize alcohol deicing enzyme gene between the promoter and the gene to be expressed.
- the host include plant cells such as potato, tobacco, corn, rice, rape, soybean, tomato, carrot, wheat, barley, rye, Alfalpha, flax, and the like.
- any method can be used as long as it is a method for introducing DNA into a host.
- a method using agrobacterium (Agrobacterium) JP-A-59-140885) JP-A-60-70080, WO 94/00977), Electroporation method (JP-A-60-251887), Particle gun (gene gun) method (Patent No. 2606856, Patent No. 2517813), and the like. it can.
- the transformant carrying the recombinant vector incorporating the DNA encoding the polypeptide of the present invention is a cell such as Escherichia coli, yeast, animal cells, or plant cells
- a conventional culture method suitable for various hosts The polypeptide can be produced by accumulating and producing the polypeptide, and recovering the polypeptide from a transformant or a culture solution.
- the transformant is an animal or plant individual
- the transformant is bred or cultivated according to a normal growth method suitable for various hosts to produce and accumulate the polypeptide, and to recover the polypeptide from the animal or plant individual. Thereby, the polypeptide can be produced.
- a non-human transgene carrying the polynucleotide of the present invention can be used.
- a non-human transgene carrying the polynucleotide of the present invention can be used.
- Polypeptides having ogo receptor activity can be produced. Examples of production / accumulation sites in an animal individual include milk, saliva, eggs, and the like of the animal.
- a transgenic plant having the polynucleotide of the present invention is cultivated, and a polypeptide having a novel Nogo receptor activity encoded by the recombinant DNA is isolated from the plant individual.
- a polypeptide having a novel Nogo receptor activity can be produced by producing and accumulating it in a plant and recovering the polypeptide from a plant individual.
- a transformant having the polynucleotide of the present invention is cultured in a medium, and a new N encoding the recombinant DNA is used.
- the polypeptide of the present invention can be produced by producing and accumulating a polypeptide having ogo receptor activity in a culture solution and recovering the polypeptide from the culture solution.
- the method for culturing the transformant of the present invention in a medium can be performed according to a usual method used for culturing a host.
- the transformant is a prokaryote such as Escherichia coli or a eukaryote such as yeast
- the medium for culturing the obtained transformant contains a carbon source, a nitrogen source, inorganic salts, and the like that can be utilized by the host.
- a natural medium or a synthetic medium may be used as long as the medium can efficiently culture the transformant.
- a medium for culturing a transformant whose host is Escherichia coli for example, a YT medium containing bactotripton, yeast extract and sodium chloride is preferable.
- Any carbon source can be used as long as each host can assimilate, such as glucose, fructose, sucrose, molasses containing these, carbohydrates such as starch or starch hydrolysate, acetic acid, propionic acid, etc.
- Organic acids and alcohols such as ethanol and propanol can be used.
- Nitrogen sources include ammonia, ammonium chloride, ammonium sulfate, and ammonium acetate , Ammonium salts of various inorganic and organic acids such as ammonium phosphate, other nitrogen-containing substances, peptone, meat extract, yeast extract, corn steep liquor, casein hydrolyzate, soybean meal and soybean meal hydrolyzate, Various fermentation cells and digests thereof can be used.
- the inorganic salt potassium phosphate monobasic, potassium phosphate dibasic, magnesium phosphate, magnesium sulfate, sodium chloride, ferrous sulfate, manganese sulfate, copper sulfate, calcium carbonate and the like can be used.
- the culture is performed under aerobic conditions such as shaking culture or deep aeration stirring culture.
- the cultivation temperature, cultivation time and pH of the culture solution are set in a range suitable for various hosts, and cultivation is usually performed at 15 to 40 ° C for 5 hours to 7 days at pH 3.0 to 9.0.
- the pH can be adjusted using an inorganic or organic acid, an alkaline solution, urea, calcium carbonate, ammonia, or the like. If necessary, an antibiotic such as ampicillin-tetracycline may be added to the medium.
- an inducer may be added to the medium, if necessary.
- a host transformed with an expression vector using a trp promoter such as isopropyl-1-D-thiogalactovyranoside.
- indoleacrylic acid or the like may be added to the medium.
- the transformant is a plant cell or tissue, it can be cultured in large quantities using a jar fermenter.
- a culture medium a commonly used Murashige and Suku (MS) medium, a White medium, or a medium obtained by adding a plant hormone such as auxin or cytokinin to these mediums can be used.
- the culture medium may be a commonly used RPMI 1640 medium (TheJournal of tme America, Medica 1 As soci ation, 199). , 519 (1967).), MEM medium (Science, 130, 432 (1959).) S D-MEM medium (Virogy, 8 , 396 (1959).), 199 medium (Proceedings of t he Societyf or t he Biologi cal Medici ne, 73, 1 (1950).) Or fetal bovine serum A medium to which (FCS) is added is used. Culture is usually pH6 ⁇ 8, 25 ⁇ 40 ° C, 5% C 0 2 intends 1-7 days line under conditions such as presence. If necessary, antibiotics such as kanamycin, penicillin, and streptomycin may be added to the medium during the culture.
- RPMI 1640 medium TheJournal of tme America, Medica 1 As soci ation, 199). , 519 (1967).
- MEM medium Science, 130,
- the transformant is an insect cell
- a culture medium generally used TNM-FH medium (Pharmingen), Sf-900 IISFM medium (Invitrogen), ExCell 400, ExCell 405 (manufactured by JRH Biosciences) and Grace's Insect Medium (Nature, 195, 788 (1962).) And the like can be used.
- the polypeptide of the present invention can be produced by culturing a transformant and isolating and purifying the polypeptide of the present invention from the culture solution.
- the method for isolating and purifying the polypeptide of the present invention can be carried out by a conventional method well known in the art and includes, for example, isolation of an enzyme and purification of a glycosyltransferase from S and 1er et al. (Methods in Enzymology, 83, 458) can be used.
- the culture solution obtained by culturing the transformant as described above is separated into cells or cells and a medium by, for example, centrifugation. I do.
- the polypeptide of the present invention is present in host cells, the collected cells or cells are washed with an appropriate buffer such as STE solution, and then subjected to ultrasonic wave, French press, Mentongaurin homogenizer, Dynomill, etc. Cells or microbial cells can be disrupted and obtained as a cell-free solution by centrifugation or filtration.
- the buffer used for purification of the polypeptide of the present invention may contain an appropriate amount of a surfactant, for example, sodium lauryl sulfate (SDS) or N-lauroyl sarcosine sodium (Sarkosyl) and the like.
- a surfactant for example, sodium lauryl sulfate (SDS) or N-lauroyl sarcosine sodium (Sarkosyl) and the like.
- the method of separating and purifying the target protein contained in the obtained crudely purified product can be carried out by combining various methods known per se for separation and purification. These known methods include, for example, solvent extraction, salting out with ammonium sulfate, dialysis, precipitation with organic solvents, ultrafiltration, gel filtration, getylaminoethyl (DEAE) -Sepharose chromatography.
- solvent extraction salting out with ammonium sulfate
- dialysis precipitation with organic solvents
- ultrafiltration ultrafiltration
- gel filtration getylaminoethyl (DEAE) -Sepharose chromatography
- the cells or cells are separated in the same manner as described above, disrupted by an appropriate method, and the fraction containing the polypeptide is recovered.
- the collected sample is solubilized with a solubilizing agent such as sodium lauryl sulfate (SDS) or a surfactant such as N-lauroyl sarcosine sodium (Sarcosyl).
- SDS sodium lauryl sulfate
- Sarcosyl N-lauroyl sarcosine sodium
- the lysate is diluted or dialyzed to a concentration that contains no or almost no solubilizer, and the polypeptide is made to have a normal three-dimensional structure.
- a purified sample can be obtained.
- the polypeptide of the present invention can be produced as a fusion protein with another protein, and purified using affinity chromatography using a substance having affinity for the fused protein (Akio Yamakawa, Experimental Medicine, 13, 469—474 (1995).
- additional protein used for the fusion protein include Protein A, FLAG, and the like (.Proceeding ngs oft he Nat io Ina l Ac ad emy of Sciences USA, 86, 8227 (1989)). , Genes Devopent, 4, 1288 (1990)., JP-A-5-336963, JP-A-6-823021).
- a fusion protein of the polypeptide of the present invention and protein A can be produced and purified by affinity chromatography using immunoglobulin G.
- a FLAG peptide When a FLAG peptide is used, it can be purified by producing a fusion protein of the polypeptide of the present invention and FLAG and performing affinity chromatography using an anti-FLAG antibody.
- the polypeptide of the present invention can be produced using an in Vitro transcription / translation system according to a known method (Journa 1 of Biomolecul NM, 6, 12, 129-134). (1 995)., Scienc e, 242, 1 16 2-1 1 64 (1 9 8 8)., The Jou rna lof B ioc hemi stry, 1 1 0, 1 6 6—1 68 (1 99 1).).
- the polypeptide of the present invention is based on its amino acid sequence, and is subjected to chemical synthesis methods such as the Fmoc method (fluorenylmethyloxycarbonyl method) and the tBoc method (t-butyloxycarponyl method).
- Peptide synthesizers such as APEX 396 (manufactured by Advanced Chemtech), 433A (manufactured by Applied Biosystems), PS3 (manufactured by Protein Technology), 950 (perceptive) ) And PS SM-8 (manufactured by Shimadzu Corporation).
- the structural analysis of the polypeptide of the present invention can be performed by a method usually used in protein chemistry, for example, the method described in Protein Structural Analysis for Gene Cloning (Hisashi Hirano, Tokyo Chemical Dojin, 1993). It is.
- the Nogo receptor activity of the polypeptide of the present invention can be determined by a known assay method (The Journal of Biochemistry, Chemistry, 258, 9893-9898 (1 983). na lof B io 1 ogyca 1 Chemi stry, 2 6 2, 1 5649-1 5 6 58 (1 987). 9 98)., The J our na lof B iolo gy cal Chemi stry, 273, 43 3 -440 (1 99 8). 2 7 78 (1 9 98)., Ar chive sof B io chemi stry and B i ophys ics, 274, 14-25 (1 989). It can be measured according to Kaihei 6—18 1759).
- the deletion, substitution or addition of amino acids of the polypeptide of the present invention can be carried out by site-directed mutagenesis, which is a well-known technique before filing the application.
- site-directed mutagenesis One or a few amino acids are deleted, substituted, or forced ⁇ : Mo 1 ecu 1 ar Cloning: A Lab orat ory Manua l, Second Editi on (1989) (Col ld S rin Harbor Labor at International Presses s.), Current Prot oc olsin Mo le cu l ar B iolo gy (1994) (Wi ley—Inter scie nc e), Nuc leic Acids Re se ar.
- Antibodies can be prepared by administering the full length of the polypeptide of the present invention, its partial peptide or a polypeptide containing the partial peptide to a mammal as an antigen.
- Antigens are themselves although it may be in the form of a body, it may be used in the form of a carrier, for example, conjugated to perforated serum albumin (BSA), keyhole limpet hemocyanin (KLH), or bovine thyroglobulin (BTG).
- BSA perforated serum albumin
- KLH keyhole limpet hemocyanin
- BGT bovine thyroglobulin
- CFA complete adjuvant
- IFA incomplete adjuvant
- mammals used for immunization mice, rats, puppies, goats, hamsters and the like can be used.
- a polyclonal antibody can be prepared, for example, according to the method of Lane et al.
- Immunized mammals are obtained by administering the antigen 3 to 10 times every 1 to 2 weeks after the first administration of the antigen to mammals, and serum is collected from those mammals and purified. it can.
- the administration of the antigen is performed 3 to 10 times every 1 to 2 weeks after the first administration.
- the dose of the antigen is preferably 50 to 10 per animal per administration.
- a peptide it is desirable that the antigen covalently bound to an appropriate carrier be used as the antigen.
- the peptide used as the antigen can be synthesized using a genetic synthesizer peptide synthesizer.
- Blood is collected from the fundus venous plexus 3 to 7 days after each administration, and the reaction of the serum with the antigen used for immunization is determined by enzyme immunoassay (enzyme-linked immunosorbent assay (ELISA): published by Medical Shoin). (1 976), Antibodies: A Laboratory Manu a 1, Second Edition (1 989) (Cold Spring Harror Lab or at ory Press) Blood is collected from the immunized mammal and the antibody titer is measured, and blood is collected at the time of immunization until a sufficient antibody titer is obtained, and a serum is prepared to obtain a polyclonal antibody.
- enzyme immunoassay enzyme-linked immunosorbent assay (ELISA): published by Medical Shoin).
- ELISA enzyme-linked immunosorbent assay
- Methods for separating and purifying polyclonal antibodies include centrifugation, salting out with ammonium sulfate, Anti-prillic acid precipitation (Antibodies: A Laborat or Manual, Eco-Edition (1989)) (Cold Srin Harb or Lab orat ory Presess) or DEAE-Sepharose column, anion exchange column, Protein A column , G-column or gel filtration column, etc., alone or in combination.
- spleen or lymph node is collected from those mammals, and the antibody-producing cells obtained therefrom are fused with myeloma (myeloma) cells
- myeloma myeloma
- a monoclonal antibody-producing hybridoma can be obtained.
- a bone marrow seed cell a cell line established from a mouse or rat is used. The cell fusion can be performed by a known method, for example, according to the method of Koehler and Milstein (Nature, 256, 495-497 (1975)).
- the spleen is removed as a production cell.
- the spleen is shredded in a MEM medium (manufactured by Nissui Pharmaceutical Co., Ltd.), broken with a pincette, and centrifuged at 1,200 rpm for 5 minutes to obtain a precipitate fraction.
- the spleen cells of the obtained precipitate fraction are treated with Tris-ammonium chloride buffer (pH 7.65) for 1 to 2 minutes to remove red blood cells, and then washed three times with MEM medium.
- P 3-X63A g 8—U 1 strain (hereinafter abbreviated as P 3—U 1) (Cu rrent Topics Mic r ob iolo gyc al Immunolo gy, 81, 1 (1978)., Europ i an J our na lof Immuno logy, 6, 5 11 (1 976).), SP 2 / 0—Ag 14 strain (hereinafter abbreviated as SP-2) (Nature, 276 , 26 9 (19778).), P3—X63—Ag8653 strain (hereinafter abbreviated as 653) (JournalofImmuno1ogy, 123, 1548 (1977) 9).), P 3 -X 63 -A 8 (hereinafter abbreviated as X 63) (Na
- 8- Azaguanin medium (1 5 g / ml 8- Azaguanin the including normal medium (1. 5 mM glutamine, 5 X 1 0 - 5 M 2 one-mercaptoethanol, 1 0 g / m 1 Jen Subculture in RPMI 1640 medium containing Yumycin and 10% FCS (CSL))
- normal medium (1. 5 mM glutamine, 5 X 1 0 - 5 M 2 one-mercaptoethanol, 1 0 g / m 1 Jen Subculture in RPMI 1640 medium containing Yumycin and 10% FCS (CSL)
- CSL 10% FCS
- the antibody-producing cells prepared in (a) and the myeloma cells prepared in (b) were mixed with MEM medium or PBS (per liter; 1.83 g disodium phosphate, 0.21 g monolithium phosphate, Wash with 6.65 g NaC1, pH 7.2), mix antibody-producing cells 5 to 10 times the number of myeloma cells, and centrifuge at 1,200 rpm for 5 minutes. After that, a precipitate fraction is obtained.
- MEM medium or PBS per liter; 1.83 g disodium phosphate, 0.21 g monolithium phosphate, Wash with 6.65 g NaC1, pH 7.2
- the suspension was dispensed in 1001 wells into each of the 96-well culture plates at 37 ° C in the presence of 5% CO 2 . Incubate for ⁇ 14 days.
- Enzyme immunoassay (Ant ibodies: AL ab oratory Manu al, Second edition (1 989) (Cold S (principal Harbor Lab or at or y Press)) to produce antibodies that specifically react with the polypeptide of the present invention among the antibodies produced in the culture supernatant. Select Hypri-Dorma. (5) Immunological detection method of the polypeptide of the present invention
- the immunological detection method of the polypeptide of the present invention includes a method of directly or indirectly binding an antibody against the polypeptide or a partial peptide thereof to an enzyme, a fluorescent substance, a radioisotope, a latex, or the like.
- a method of measuring the polypeptide or its partial peptide by using it is mentioned. Examples of such measurement methods include, for example, ELISA and chemiluminescence, which are detected by enzyme labeling such as horseradish peroxidase and al lipophosphatase, and luminol and GFP (Green Fluorescent Protein).
- Examples include the FITC method for detecting a fluorescent label such as, a RIA method for detecting a radioisotope label such as 125I , and a latex agglutination method bound to latex.
- Examples of such measurement methods include Western blotting and immunohistological staining.
- polypeptide of the present invention or its partial peptide can be quantified by using such a measuring method.
- mRNA is quantified by Northern hybridization or RT-PCR to encode the polypeptide of the present invention. It can be quantified.
- mice When quantifying mRNA in normal or disease model animals, such as mice, rats, egrets, sheep, bush, sea lions, cats, dogs, monkeys, etc., glucose is administered as necessary, and skeletal muscle Isolate organs or tissues such as brain, blood, stomach, kidney and prepare cells.
- MRNA can be extracted from the obtained cells by a conventional method well-known in the art, and the mRNA can be quantified and analyzed by the RT-PCR method or the Northern Protocol hybridization method. You.
- mRNA When quantifying mRNA from a transformant expressing the polypeptide of the present invention or a partial peptide thereof, mRNA may be extracted from the transformant by a conventional method well known in the art and used in RT-PCR. MRNA can be quantified and analyzed by the Northern blot hybridization method or the like.
- sequences of many human chromosomal genes whose functions are unknown are registered in a database. Therefore, by comparing the polynucleotide sequence of the present invention with the sequence of the human chromosomal gene registered in the database, the human chromosomal gene encoding the polypeptide of the present invention is identified, and the structure of the gene is determined. could be revealed. If a chromosomal gene sequence that matches the sequence of the cDNA is registered, by comparing the sequence of the cDNA and the sequence of the chromosomal gene, the promoter region of the chromosomal gene encoding the polypeptide of the present invention, exon and Intron structures can be screened.
- polynucleotide of the present invention Using the polynucleotide of the present invention as a probe, a conventional method well known in the art and used by the University of Tokyo, Institute of Medical Science, Cancer Research Division, New Cell Engineering Experimental Protocol, Shujunsha (1993). The promoter region of the gene can be obtained.
- the promoter region includes all promoter regions involved in the transcription of a gene encoding the polypeptide of the present invention in mammalian cells.
- one of two types of antibodies that recognize different epitopes reacting with the polypeptide of the present invention is directly or indirectly enzymatically treated by the method for immunologically detecting the polypeptide of the present invention.
- Examples thereof include a sandwich ELISA method using a labeled product, and a competitive RIA method using a polypeptide of the present invention labeled with a radioisotope such as 125 I and an antibody recognizing the polypeptide.
- the expression of the polypeptide of the present invention is reduced in the skeletal muscle of a diabetic model rat, and when the condition is improved by dietary restriction and exercise, the polypeptide is expressed in the skeletal muscle. This detection method can be used for the detection of diabetes because the present condition is restored.
- the polymorphism of this gene By examining the polymorphism of this gene, it can be used to detect diabetes and predict prognosis. Furthermore, by examining the relationship between the gene polymorphism and diseases in organs (brain and skeletal muscle) in which the gene is expressed, it can be used to detect other diseases.
- the polymorphism analysis of this gene can be performed using the gene sequence information of this gene. Specifically, genetic polymorphisms can be analyzed using the Southern blot method, direct sequence method, PCR method, DNA chip method, etc. (Clinical tests, 42, 1507-1517 (1998). 42, 1565-1570 (1998).). (9) Neurodegenerative disease detection method
- one of two types of antibodies that recognize different epitopes that react with the polypeptide of the present invention is directly or indirectly enzymatically detected by the method for immunologically detecting the polypeptide of the present invention.
- Examples thereof include a sandwich ELISA method using a labeled product and a competitive RIA method using a polypeptide of the present invention labeled with a radioisotope such as 125 I and an antibody recognizing the peptide.
- the polypeptide of the present invention can be used for detecting neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis and the like.
- the polypeptide of the present invention can be used for detecting a neurodegenerative disease or predicting prognosis by examining that the expression is elevated in the brain and the polymorphism of the present gene. (10) Detection kit
- the polynucleotide of the present invention can be used for detecting those degenerative diseases and diabetes using Northern hybridization or PCR.
- a neurodegenerative disease and diabetes can be detected by an immunological technique using the antibody of the present invention.
- the kit includes a labeled polynucleotide of the present invention.
- the polypeptide of the present invention is included as a standard antigen in addition to the antibody of the present invention.
- a standard curve may be included in the kit.
- polypeptide of the present invention By administering the polynucleotide of the present invention, production of the polypeptide of the present invention can be suppressed. That is, it is possible to suppress the transcription of the DNA encoding the polypeptide of the present invention and the translation of the mRNA encoding the polypeptide of the present invention by using the polynucleotide of the present invention. .
- the polypeptide of the present invention or a partial peptide thereof is useful as a reagent for searching or screening for a protein, a low-molecular substance, or the like that binds to the polypeptide of the present invention. That is, the present invention provides a method for binding a polypeptide of the present invention, which comprises contacting a polypeptide of the present invention or a salt thereof or a partial peptide or a salt thereof of the present invention with a test substance. Provided is a method for screening a compound.
- test substance a low molecular compound, a protein, a human or a tissue extract of a mammal such as a mouse, a rat, a mouse, a rat, a mouse, a mouse, a monkey, and a monkey, a cell culture supernatant, and the like are used. These test substances are added to the polypeptide of the present invention, and fractionated while measuring the binding activity and the like, so that a single ligand can be finally obtained.
- the method for screening a binding substance of the present invention uses the polypeptide of the present invention or a partial peptide thereof, or constructs an expression system for a recombinant polypeptide, and binds using the expression system.
- the cell stimulating activity for example, GAP43 (Cell, 83, 269-278 (1995).) Or axon extension using nerve cells, etc., is performed using the Atsey system or by binding to the polypeptide of the present invention. It can be measured and screened.
- the polypeptide used in the method for screening for a binding substance may be any one containing the above-mentioned polypeptide of the present invention or the partial peptide of the present invention. Largely expressed polypeptides are suitable.
- the above-described expression method is used, and it is preferable to carry out the expression by expressing the DNA encoding the polypeptide in mammalian cells or insect cells.
- Target protein The DNA fragment encoding the protein moiety is usually, but not necessarily, complemented by DNA.
- a gene fragment or a synthetic DNA may be used.
- the DNA fragment In order to introduce the DNA fragment encoding the polypeptide of the present invention into a host animal cell and to express them efficiently, the DNA fragment must be obtained by transforming the DNA fragment into a nuclear polyhedrosis virus belonging to a baculovirus using an insect as a host.
- nuc1 earpol yhedro sis virus (NPV) polyhedrin promoter SV40-derived promoter, retrovirus promoter, meta-mouth tyone-imp motor, human heat shock promoter, cytomegalovirus promoter, s Ra promoter
- NDV nuc1 earpol yhedro sis virus
- SV40-derived promoter SV40-derived promoter
- retrovirus promoter meta-mouth tyone-imp motor
- human heat shock promoter cytomegalovirus promoter
- cytomegalovirus promoter s Ra promoter
- s Ra promoter incorporated downstream, such as overnight.
- Examination of the quantity and quality of the expressed polypeptide can be performed by a method known per se. For example, the method can be carried out according to the method described in The Journal of Biochemistry, Chemistry, 267, 19555; L 9559 (1992).
- the polypeptide or the partial peptide thereof of the present invention may be a polypeptide or a partial peptide thereof purified according to a method known per se.
- a cell containing the polypeptide or a cell supernatant thereof may be used.
- the cells may be immobilized with glutaraldehyde, formalin, or the like.
- the immobilization method can be performed according to a method known per se.
- the cell containing the polypeptide of the present invention refers to a host cell expressing the polypeptide of the present invention.
- Escherichia coli, Bacillus subtilis, yeast, insect cells, animal cells, and the like are used.
- the cell supernatant fraction refers to a fraction contained in the cell culture supernatant.
- an appropriate polypeptide fraction and a labeled test substance are required.
- the polypeptide fraction a natural polypeptide fraction or a recombinant polypeptide fraction having an activity equivalent thereto is desirable.
- “equivalent activity” means equivalent ligand binding activity, signal transduction action, and the like.
- labeled test substances include proteins and low molecular weight compounds labeled with 3 H, 125 I, 14 C, 35 S and the like.
- a cell containing the polypeptide of the present invention or a membrane fraction of the cell is subjected to a buffer suitable for the screening method.
- the buffer may be any buffer solution that does not inhibit the binding between the ligand and the polypeptide, such as a phosphate buffer solution of pH 4 to 10, preferably pH 6 to 8, and a Tris-HC1 buffer solution.
- various proteins such as surfactants such as CHAPS, Tween-80 (Kao-Atlas), digitonin, dexcholate, serum albumin, and gelatin are added to the buffer for the purpose of reducing non-specific binding. Is also good.
- a protease inhibitor such as PMSF, leptin, E-64 (manufactured by Peptide Research Laboratories), or pepsintin can be added for the purpose of suppressing the degradation of the binding substance by the protease. ⁇ . In the polypeptide solution.
- B-NSB a cell-stimulating activity mediated by the polypeptide, for example, axonal extension using GAP43 or a nerve cell, is performed using a known method or a commercially available measurement kit.
- a cell-stimulating activity mediated by the polypeptide for example, axonal extension using GAP43 or a nerve cell.
- cells containing the polypeptide are cultured on a multiwell plate or the like.
- Binding substance screening kit Before screening for a binding substance, replace the medium with a fresh medium or an appropriate buffer that is not toxic to cells, add a test substance, etc., incubate for a certain period of time, and then extract cells or supernatant. Liquid After recovery, the products generated are quantified according to the respective method.
- a substance as an indicator of the cell stimulating activity for example, GAP43
- an inhibitor for the degrading enzyme may be added to perform the assay.
- the kit for screening a binding substance that binds to the polypeptide of the present invention or a salt thereof includes a polypeptide of the present invention or a salt thereof, a partial peptide of the present invention or a salt thereof, and a cell containing the polypeptide of the present invention. Or a cell sediment fraction containing the polypeptide of the present invention.
- Examples of the binding substance screening kit of the present invention include the following.
- Hank's Balanced Salt Solution manufactured by Invitrogen
- serum albumin manufactured by Sigma-Aldrich
- the (a) C HO cells expressing the polypeptide of the present invention 1 2-well plates and passaged 5 X 1 0 5 or Z holes, 3 7 ° C, s 5 % C_ ⁇ 2 2 days of culture What you did.
- test substance labeled with commercially available 3 H, 125 I, 14 C, or 35 S at 4 ° C or 120 ° C, and dilute to 1 zM with the measurement buffer.
- 3 H, 125 I, 14 C, or 35 S at 4 ° C or 120 ° C
- dilute to 1 zM with the measurement buffer.
- the polypeptide of the present invention or its partial peptide is useful as a reagent for searching or screening for a substance that regulates the binding activity of a substance that binds to the polypeptide of the present invention. That is, the present invention provides a polypeptide of the present invention, which comprises contacting a test substance with a substance that regulates the binding activity between the polypeptide of the present invention or a salt thereof and a binding substance thereof, and a binding substance thereto. A method for screening a binding activity-regulating substance which regulates the binding activity of a.
- the test substance may be, for example, a human or mammal, for example, a tissue extract of mouse, rat, rat, mouse, monkey, monkey, etc., cell culture supernatant peptide, protein, non-peptide substance, synthetic substance Quality, fermentation products, etc. are used. These test substances are added together with the polypeptide of the present invention and the binding substance thereof, and fractionated while measuring the binding activity and the like, whereby a single binding activity regulating substance can be finally obtained.
- a polypeptide of the present invention or a recombinant expression system that expresses the polypeptide and using a bioassay system or a binding assay system, the binding property between the binding substance and the polypeptide of the present invention is changed.
- a substance to be caused for example, a peptide, a protein, a non-peptidic substance, a synthetic substance, a fermentation product, or a salt thereof can be efficiently screened.
- Such substances include (a) a cell stimulating activity through the binding of a binding substance to the polypeptide of the present invention, for example, an activity to promote or suppress axonal outgrowth using GAP43 or a neuronal cell. (B) a substance that enhances or reduces the binding force between the binding substance and the polypeptide of the present invention.
- the present invention relates to (i) when the polypeptide of the present invention, its partial peptide or a salt thereof is brought into contact with a binding substance, and (ii) when the polypeptide of the present invention, its partial peptide or a salt thereof is bound.
- the binding activity of the binding substance which is characterized by comparing the binding amount of the binding substance when the substance and the test substance are brought into contact with each other and the polypeptide of the present invention, its partial peptide or a salt thereof, A screening method is provided.
- the cell stimulating activity or the amount of binding between the polypeptide and the binding substance are measured and compared. It is characterized by. Specifically, (a) when the labeled binding substance is brought into contact with the polypeptide of the present invention or the like, and when the labeled binding substance and the test substance are brought into contact with the polypeptide of the present invention or the like, A method for screening a substance that changes the binding property between a binding substance and a polypeptide of the present invention, which comprises measuring and comparing the amount of binding of a labeled binding substance to a peptide or the like; (b) a labeled binding substance When the protein is brought into contact with a cell or cell culture containing the polypeptide of the present invention or the like, the labeled binding substance and the test substance are precipitated from the cell containing the polypeptide of the present invention or the cell of the present invention.
- the amount of the labeled binding substance bound to the cells of the present invention or the precipitated fraction thereof when contacted with the fractions is measured and compared, and the binding substance is characterized in that the binding substance and the polysaccharide of the present invention are compared.
- the kit for aging includes a polypeptide of the present invention, a cell containing the polypeptide of the present invention, or a cell culture containing the polypeptide of the present invention.
- Examples of the screening kit of the present invention include the following.
- Hank's Balanced Salt Solution manufactured by Invitrogen
- serum serum albumin manufactured by Sigma-Aldrich
- CHO cells expressing the polypeptide of the present invention were subcultured on a 12-well plate at 5 ⁇ 10 5 cells / ⁇ : and cultured at 37 ° C., 5% CO 2 for 2 days.
- the polynucleotide and the antibody of the present invention are useful as reagents for screening substances, such as low molecular weight compounds and proteins, that regulate the expression of the polypeptide of the present invention.
- the present invention relates to the method of contacting a test substance with a cell or tissue expressing the polypeptide of the present invention, and measuring the amount of protein of the polypeptide of the present invention.
- a method for screening for a substance that alters the expression level of a polypeptide of the present invention or / and a polynucleotide of the present invention which comprises measuring an increase or decrease in the expression of a polypeptide.
- test substance for example, peptides, proteins, non-peptidic substances, synthetic substances, fermentation products and the like are used. These test substances are used to construct cells or tissues expressing the polypeptide of the present invention, for example, blood or organs derived from animals, tissues or cells isolated from the organ, or a recombinant expression system expressing the polypeptide of the present invention. Then, the resultant is added to a culture solution of the obtained transformant or the like, and fractionated while measuring the amount of mRNA or protein of the polypeptide of the present invention, thereby finally obtaining a single expression regulator.
- the kit for screening for a substance for regulating the expression of a polypeptide of the present invention or a salt thereof can be used for the precipitation fractionation of the polypeptide of the present invention, cells containing the polypeptide of the present invention, or cells containing the polypeptide of the present invention. And the like.
- Examples of the screening kit of the present invention include the following. (18) Screening kit based on immunoassay
- Examples of the immunological quantification method of the polypeptide of the present invention include a sandwich ELISA method using two types of monospecific antibodies which react with the polypeptide of the present invention in a liquid phase and have different epitopes.
- radio I Takeno Adzu Si method using polypeptide of the present invention labeled with a radioisotope such as port antibodies specific to Li peptide and 1 2 6 I is exemplified.
- a screening kit based on such an immunological quantification method is useful as a kit for screening an expression regulating substance.
- the polypeptide of the present invention as a standard antigen is contained. included. Further, a standard curve may be included in the kit. (19) Screening kit based on molecular biological quantification method
- Examples of the molecular biological quantification method of the polynucleotide of the present invention include a Northern hybridization method and a PCR method using the polynucleotide of the present invention or an oligonucleotide prepared therefrom.
- the expression level of the gene encoding the polypeptide can be quantified at the mRNA level. Screening kits based on such molecular biological quantification methods are useful for screening for expression regulators, and the kit contains the polynucleotide of the present invention or an oligonucleotide prepared therefrom. It is.
- a drug or a non-human mammal such as a mouse, a rat, a rabbit, a rabbit, a horse, a pig, a cat, a dog, a monkey, etc.
- a normal or disease model non-human mammal for a normal or disease model non-human mammal;
- an antidiabetic drug or the like is administered, and after a certain period of time, blood or a specific organ, such as the brain, stomach, kidney, or the like, or a tissue or cell isolated from the organ is obtained.
- the mRNA of the polypeptide of the present invention or a partial peptide thereof contained in the obtained cells can be obtained, for example, by extracting mRNA by a well-known extraction method in the art, for example, by using a technique such as TaqMan PCR. And can be analyzed by using the Northern Protocol method by known means.
- a transformant expressing the polypeptide of the present invention or a partial peptide thereof is prepared according to the method described above, and mRNA of the polypeptide of the present invention or a partial peptide thereof contained in the transformant is prepared. It can be quantified and analyzed in the same way.
- the kit includes the labeled polynucleotide of the present invention.
- CHO cells expressing the polypeptide of the present invention 12 well plates were ⁇ with 5 XI 0 5 cells / well, 37 ° C, 5% C0 2, in 2 ⁇ those cultured. ,
- Sense primers and antisense primers that specifically amplify the polynucleotide of the present invention are designed and synthesized using a DNA synthesizer (Applied Biosystems).
- an embryonic stem cell such as a target non-human animal, for example, mouse, mouse, goat, bush, animal, chicken, mouse, rat, etc.
- the DNA encoding the polypeptide of the present invention on the chromosome in emc e11) is described in, for example, Naturé, 326 (6110), 295 (1987)., Cell, 51 (3), 503 (1987). And the like, and can produce a mutant clone inactivated or substituted with an arbitrary sequence as described in Nature, 350 (6315), 243 (1991). .
- a chinula consisting of an embryonic stem cell clone and normal cells is injected into the blastocyst (bias tcst) of a fertilized egg of a non-human animal by a chimera method or a chimera method.
- blastocyst bias tcst
- Individuals can be created.
- an individual having an arbitrary mutation in the DNA encoding the polypeptide of the present invention on the chromosome of the whole body can be obtained. It is possible to obtain a homozygous individual having both mutations.
- a mutation in an animal individual, can be introduced into the chromosome at any position of DNA encoding the polypeptide of the present invention.
- the activity of the product can be changed by introducing a mutation such as substitution, deletion, or insertion of a base into the translation region of DNA encoding the polypeptide of the present invention on the chromosome.
- the DNA encoding the polypeptide of the present invention on the chromosome It is possible to produce a non-human knockout or non-human transgenic animal whose expression is controlled in the stage or tissue or has any deletion, substitution or addition in its translation region or expression control region.
- knockout and transgenic non-human animals can induce symptoms of various diseases caused by the polypeptide of the present invention at any time, at any degree, or at any site. Therefore, the knockout and transgenic non-human animals of the present invention become an extremely useful animal model in the treatment and prevention of various diseases caused by the polypeptide of the present invention. In particular, it is very useful as a model for evaluating therapeutic and prophylactic agents.
- the drug containing the antibody, the binding substance, the binding modulator or the expression modulator of the present invention can be administered alone as a therapeutic agent, it is usually one or more pharmacologically acceptable drugs. It is desirable to mix with the above carriers and provide as a pharmaceutical preparation produced by any method well known in the field of pharmaceuticals.
- Dosage forms include sprays, capsules, tablets, granules, syrups, emulsions, suppositories, injections, ointments, tapes and the like.
- Formulations suitable for oral administration include emulsions, syrups, capsules, tablets, powders, granules and the like.
- liquid preparations such as emulsions and syrups include water, sugars such as sucrose, sorbitol, fructose, glycols such as polyethylene glycol and propylene glycol, oils such as sesame oil, olive oil, soybean oil, p- It can be manufactured using preservatives such as hydroxybenzoic acid esters and flavors such as stove beef leaf flavor and peppermint as additives.
- Formulations suitable for parenteral administration include injections, suppositories, sprays and the like.
- an injection is prepared using a carrier comprising a salt solution, a glucose solution, or a mixture of both.
- Suppositories are prepared using carriers such as cocoa butter, hydrogenated fats or carboxylic acids.
- Sprays are prepared using the substance itself or a carrier that does not irritate the oral and respiratory mucosa of the recipient and that disperses the substance as fine particles to facilitate absorption.
- the carrier include lactose and glycerin.
- Formulations such as aerosols and dry powders are possible depending on the properties of the substance and the carrier used.
- the components exemplified as additives for oral preparations can also be added.
- the substance obtained by using the screening method or the screening kit of the present invention or a salt thereof is a binding substance, a binding activity regulating substance and an expression regulating substance. Specifically, (a) the binding substance and the polymorph of the present invention are used.
- Cell stimulating activity through binding to a peptide for example, a substance that enhances or reduces axonal extension using GAP43 or a nerve cell, (b) enhances or decreases the binding activity between a binding substance and a polypeptide of the present invention Or (c) a substance that enhances or reduces the expression level of the polypeptide of the present invention.
- a substance that enhances or reduces axonal extension using GAP43 or a nerve cell (b) enhances or decreases the binding activity between a binding substance and a polypeptide of the present invention
- a substance that enhances or reduces the expression level of the polypeptide of the present invention include low molecular weight compounds, peptides, proteins, non-peptidic substances, synthetic substances, fermentation products, and the like. These substances may be novel substances or known substances. It may be a natural substance or a non-natural substance.
- An agonist against the polypeptide or the like of the present invention has the same action as the physiological activity of the ligand for the polypeptide or the like of the present invention, and is useful as a safe and low-toxic drug according to the activity of the binding substance. . Since the antagonist to the polypeptide of the present invention or the like can suppress the physiological activity of the ligand to the polypeptide of the present invention or the like, it is useful as a safe and low-toxic drug for suppressing the activity of the binding substance. It is.
- the substance that enhances the binding force between the ligand and the polypeptide of the present invention is useful as a safe and low-toxic drug for enhancing the physiological activity of the ligand to the polypeptide of the present invention and the like.
- the substance that decreases the binding force between the ligand and the polypeptide of the present invention is useful as a safe and low-toxic drug for reducing the physiological activity of the ligand for the polypeptide of the present invention and the like.
- the polypeptide of the present invention is useful for preventing and / or treating various diseases containing a substance that alters the expression level of the polypeptide of the present invention. Is considered to play some important role. Therefore, an expression regulator that changes the expression level of the polypeptide of the present invention or a partial peptide thereof can be used as an agent for preventing and / or treating a disease associated with dysfunction of the polypeptide of the present invention.
- the substance when used as a prophylactic and / or therapeutic agent for a disease associated with dysfunction of the polypeptide of the present invention, it can be formulated according to a conventional method.
- the substance can be a sugar-coated tablet, capsule, elixir, microcapsule, or the like, orally, or a sterile solution of water or other pharmaceutically acceptable liquid, if necessary. It can be used parenterally in the form of injections, or suspensions.
- the substance is mixed with known physiologically acceptable carriers, flavoring agents, excipients, vehicles, preservatives, stabilizers, binders, and the like in a unit dosage form generally required for the practice of pharmaceutical preparations.
- Additives that can be incorporated into tablets, capsules, etc. include, for example, binders such as gelatin, corn starch, tragacanth, gum arabic, excipients such as crystalline cellulose, corn starch, gelatin, alginic acid, etc. And a swelling agent such as magnesium stearate, a sweetener such as sucrose, lactose or saccharin, and a flavoring agent such as peppermint, cocoa oil or cherry.
- binders such as gelatin, corn starch, tragacanth, gum arabic
- excipients such as crystalline cellulose, corn starch, gelatin, alginic acid, etc.
- a swelling agent such as magnesium stearate, a sweetener such as sucrose, lactose or saccharin, and a flavoring agent such as peppermint, cocoa oil or cherry.
- a liquid carrier such as an oil or fat.
- Sterile compositions for injection can be formulated according to conventional formulations of dissolving or suspending the active substance in vehicles, such as water for injection, or naturally occurring vegetable oils such as sesame oil, coconut oil and the like.
- aqueous liquids for injection include physiological saline, isotonic solutions such as d-sorbitol, d-mannitol, and sodium chloride containing glucose and adjuvants.
- Suitable dissolution aids for example, It may be used in combination with alcohols such as ethanol, propylene glycol and polyethylene glycol, and nonionic surfactants such as polysorbate 80 and HCO-50.
- the oily liquid for example, sesame oil, soybean oil, etc. are used.
- a solubilizing agent such as benzyl benzoate or benzyl alcohol.
- prophylactic / therapeutic agents include buffer solutions such as phosphate buffer and sodium acetate buffer, soothing agents such as benzalkonium chloride and proforce hydrochloride, and stabilizers such as human serum albumin and polyethylene glycol. , Benzyl alcohol, phenol and the like, preservatives, antioxidants and the like.
- the prepared injection solution is usually filled in a suitable ampoule.
- the preparations obtained in this way are safe and have low toxicity.For example, they should be administered to mammals such as human rats, mice, egrets, sheep, pigs, cats, cats, dogs and monkeys. Can be.
- the single dose of the substance or its salt may vary depending on the administration target, target organ, symptoms, administration method, etc., but in the case of oral administration, for example, in a diabetic patient weighing 60k and a degenerative degeneration patient
- a diabetic patient or a neurodegenerative patient weighing 60 kg generally about 0.01 to 3 Omg per day, preferably about 0.1 to 20 mg, more preferably about 0.1 to 1 Omg per day
- the degree is administered by intravenous injection.
- the dose can be administered in terms of weight per kg of body weight.
- the dose or frequency of administration varies depending on the desired therapeutic effect, administration method, treatment period, age, body weight, etc., but is usually 10 to 8 mg / kg per day for an adult.
- Total RNA was prepared from the brain, skeletal muscle and lung of Zucker Fat at 7 y rats using TRI zo1Reagent (manufactured by Invitrogen) according to the attached manual, and total RNA was prepared. NA 300 ⁇ g was obtained.
- poly (A) + RNA was prepared using QuickPrec Micro mRNA Purification at Kit (manufactured by Amersham Bioscience) according to the attached manual.
- a cDNA fragment for cloning was prepared from poly (A) + RNA using Superscript Choice System (Invitrogen).
- the cDNA to which the adapter was added was phosphorylated at the 5 'end using T4 po lynuc leotide kinase, followed by Size Sep 400 Sun Co lmns (manufactured by Amersham Biosciences).
- the above cDNA fragment was recovered.
- the vector p1asmidpSport1 (Invitrogen) is treated with the restriction enzyme EcoRI (Takara Shuzo), phosphorylated at the end 5 with T4 polynucleotide kinase, and then T4 DNA Ligas
- the cDNA fragment obtained using e was incorporated.
- a cDNA fragment was prepared by PCR from about 20000 cells of the obtained transformant.
- the cDNA fragment obtained is: DYEnami c ET Dye Termina Using the kit or Kit (MegaBACE) (Amersham Biosciences), according to the attached manual, the entire nucleotide sequence of the cDNA fragment was analyzed using the MegaBACE 500 DNA Analyzes System (Amersham Biosciences).
- cDNA sequence information was analyzed using CHI Space (Hitachi Software Engineering Co., Ltd.) to select 5000 non-overlapping cDNA clones. These clones were transformed into a Type 7 slide glass (Amersham Bioscience) using a DNA chip preparation system, Microarray System Generation III III Potter (Molecular Dynamics). ) To produce a DNA chip. Using this DNA chip, gene expression fluctuation analysis was performed on a Zucker Fatty rat (Journal of He red, 52, 275-278 (1961).) which is an insulin resistance model rat with obesity.
- ⁇ -5 dCTP (Amersham Biosciences) was incorporated and cDN A was fluorescently labeled.
- GFX PCR DNA and Gel Band Purific at ion Kit (Amershamba The labeled cDNA was purified using a probe (manufactured by Bioscience) and used as a probe. The probe was hybridized with a DNA chip using an Automated Slide Processor (manufactured by Amersham Bioscience). The hybridization was performed for 12 hours at 48 ° C with the probe after pretreatment according to the protocol of Type 7 slides, and Hyb ridizaton Buf fer Ver. (Manufactured by Suzuki).
- the plasmid containing the 39 C7 cDNA fragment obtained in Example 1 was digested with the restriction enzyme EcoR I (Takara Shuzo), and was digested with QIAquick Gel Extraction Kit (Qiagen) according to the attached manual. A cDNA fragment was obtained.
- the cDNA fragment 5 Ong Red an i rimer II DNA Labe ll ing S yst em ( Amersham Bruno Iosaien, Inc., Ltd.) using the attached manual, [ ⁇ - 32 P] dCTP ( 6000 Ci / mmo l, 2 OmC i / labeled with at 32 P ml) (NEN Co.).
- Colony hybridization analysis was performed using the 32 P-labeled cDNA fragment as a probe. Apply human brain cDNA library (Clontech) or rat brain cDNA library (Clontech) to 50 LB plates at approximately 1 ⁇ 10 4 colonies per plate, and place at 37 ° C. The cells were cultured to form colonies. The colonies thus obtained were transferred to a nylon membrane Hybond-N (manufactured by Amersham Biosciences) for DNA pro- cessing, and then lysed (10% SDS), denatured (0.5N NaOH, 1.5M). Na C 1), a neutralizing solution (0.5 M Tris-HC1, pH 7.0 (including 1.5 M Na C 1)) and 2 ⁇ SSC, and air-dried.
- the transferred DNA was immobilized on the nylon membrane by irradiating the nylon membrane with ultraviolet light.
- Exp r> ess Hy b Hybridizat ion So l The solution was added to a solution (manufactured by Clontech), a nylon membrane on which DNA was fixed was immersed in the solution, and hybridization was performed at 65 ° C. for 16 hours. After the hybridization, the membrane was washed with 2 XSSC (20 XSSC: 3 M NaCl, 0.3 M sodium citrate, pH 7.0) for 5 minutes at room temperature, and 30 minutes at 1 XSSC at 50 ° C. After washing with 5 ⁇ SSC at room temperature for 5 minutes, it was air-dried.
- this nylon film is attached to an imaging plate cassette (Fuji Photo Film Co., Ltd.) together with an imaging plate (Fuji Photo Film Co., Ltd.), and after performing autoradiography, an image analyzer FLA3000 G (Fuji Photo Film Co., Ltd.) ) Image analysis was performed. Colony hybridization was repeated until a single clone was obtained for a colony in which a signal was detected.
- Plasmid DNA was prepared from the obtained single clone colony using QIAprep S in Miniprep Kit (manufactured by Qiagen); DYEnamic ET DeTerminat or Kit (MegaB ACE) (manufactured by Amersham Bioscience) And according to the attached manual, the entire nucleotide sequence was determined using MegaB ACE500 DNA Ana sis System (manufactured by Amersham Bioscience). As a result, a cDNA containing a cDNA fragment (SEQ ID NO: 1) encoding a polypeptide consisting of 441 amino acids from one human cDNA library (SEQ ID NO: 2; hereinafter, h39C7) was obtained.
- a cDNA containing a cDNA fragment (SEQ ID NO: 3) encoding a polypeptide consisting of 445 amino acids (SEQ ID NO: 4; hereinafter, r39C7) was obtained from the rat cDNA library.
- Human and rat cDNA had 86% similarity at the base level and 86% similarity at the amino acid level.
- h39C7 is a signal peptide region (SP; Signal Peptide) predicted at positions 1 to 21 of the amino acid sequence, and positions 23 to 305 are Leucine Ritsuripiripi of the Nogo receptor.
- LRRNT Lecine rich repeat at Nte rminal doma in
- LRR — 1, LRR—2, LRR-3, LRR—4, LRR—5, LRR-6, LRR—7, and LRRCT Le cine rich re eat
- GP I darcosylphosphatidylinositol
- LRR has a function involved in protein-protein interactions (Journa lof Mallecul ar Biology, 277, 519, (1 98).).
- the GPI anchor motif structure has a function on the cell membrane that is involved in binding to the cell membrane (protein 'nucleic acid.
- the plasmid containing the cDNA encoding h39C7 obtained in Example 2 was digested with the restriction enzyme EcoRI (Takara Shuzo), and QI Aquick Gel Extraction Kit (Qiagen) was digested. And a cDNA fragment containing h39C7 was obtained according to the attached manual.
- the obtained cDNA fragment (5 ng) was digested with [ ⁇ - 32 P] dCTP (6000 Ci / mmol, 20 mCi / labeled with at 32 P ml) (NEN Co.). Northern blot analysis was performed using the 32 P-labeled cDNA fragment thus prepared as a probe.
- the labeled probe prepared above was added to Expression Hybridization Solution (manufactured by Klontech), and the MTN plate membrane (manufactured by Klontech) was immersed in the solution, and the solution was immersed in the solution for 16 hours at 65 ° C. Hybridization was performed. After hybridization, the nylon membrane was treated with 2XSSC (20XSSC: 3M NaCl, 0.3M sodium citrate, pH 7.0) for 5 minutes at room temperature, and at 133 ° for 30 minutes at 50 ° for 0. After washing with 5XSSC at room temperature for 5 minutes, it was air-dried. Next, this nylon membrane was attached to an imaging plate cassette (Fuji Photo Film Co., Ltd.) together with the imaging plate (Fuji Photo Film Co., Ltd.), After the fee, image analysis was performed with the image analyzer FLA 3000G.
- 2XSSC 20XSSC: 3M NaCl, 0.3M sodium citrate, pH 7.0
- h39C7 mRNA was observed to be about 5 kb in size and expressed in brain and skeletal muscle (Fig. 2).
- Example 3 SEQ ID NO: 1
- 50 ng [shed - 32 P] dCTP (6000 C i / mmo 1, 20 mC i / m 1)
- NNN use R edipri me II DNA Labe lli ng S yst em ( Amersham pi O Science) using company
- 32 P-labeled according to its formulation.
- the nylon membrane was transferred to a solution in which the 32 P-labeled gene cDNA fragment was used as a probe and added to the same buffer, and subjected to hybridization at 65 ° C. for 16 hours.
- the nylon membrane was rinsed with 2 XSSC at room temperature for 5 minutes, then washed with 1 XSSC at 50 ° C for 30 minutes, and with 0.5330 at 50 ° (30 minutes. After air-drying, the nylon membrane was washed with Fuji. Image analysis was performed using the FLA3000 G image analyzer, which was in close contact with the photographic film Imaging 'plate. The intensity of each signal was analyzed and quantified. As a result, it was involved in advanced mental functions in the brain Strong expression was observed in the cerebral cortex (temporal lobe, parietal lobe, etc.) (Fig. 3), and the vertical axis of the graph in the figure indicates the relative amount with the expression level in the whole brain as 1.
- the synthesized cDNA was subjected to a P01 reaction using the cDNA as a type III, and the amount of ⁇ 111 was determined.
- One reaction cycle was performed at 50 ° C for 2 minutes and at 95 ° C for 2 minutes using P 1 atinum Quantitave P GR Sup rMix—UDG (Invitrogen) as a PCR reaction reagent. Thereafter, 40 reaction cycles were performed at 95 ° C for 2 minutes and at 60 ° C for 1 minute for 40 times.
- r39C7 mRNA expression increased when dietary restriction and exercise improved insulin resistance (Fig. 4).
- the full-length cDNA of h39C7 obtained in Example 2 was inserted into a p3xFLAG-CMV-7.1 vector (Sigma) to obtain an expression vector.
- This expression vector was introduced into L6 cells to obtain cells stably expressing h39C7.
- the expression of h39C7 in the cells into which the expression vector was introduced was detected by a stamp roto method using an anti-FLAG antibody (FIG. 5).
- the whole cell extract was subjected to SDS-PAGE and then transferred to Immobilm Transfer Membranes (MILLIPORE).
- This membrane was subjected to blocking treatment in 5% skim milk and PBS at room temperature for 1 hour, and then a Peroxidase-conjugated Anti-FLAG antibody (Sigma) was added, followed by further incubation at room temperature for 1 hour. After incubation, the membrane was washed with 0.1% Tween-PBS, developed using an ECL + plus Western Blotting Detection System (Amersham Biosciences), and exposed to Hyper film ECL (Amersham Biosciences).
- a Peroxidase-conjugated Anti-FLAG antibody Sigma
- the glucose uptake activity was measured using the h39C7-expressing cell line obtained in Example 6. After the cells were wound on a CytoStar-T plate (Amersham Biosciences) at 2 ⁇ 10 4 cells / well, the cells were cultured at 37 ° C. in a CO 2 incubator at 37 ° C. The cells 300 il of PBS (-) was wash 3 times with 80 ⁇ 1 of HEPES-Krebs buffer (119 mM NaCl , 4.75 mM KC1, 5 mM NaHC0 3, 2.54 mM CaCl 2 ⁇ 2H 2 0, 1.2 mM MgSO 4) was added 20 mM HEPES. 7H 2 0 ( pH 7.4)).
- ⁇ - ⁇ supplemented with 10% fetal bovine serum and 1x Antibiotic-Antimycotic (manufactured by Iiivitrogen) as a medium, and reach 70-80% confluence.
- the cells were collected using trypsin, diluted 1 / 10-20 and subcultured.
- trypsin trypsin
- diluted 1 / 10-20 subcultured.
- the glucose uptake ability was enhanced by the forced expression of h39C7. Therefore, it was suggested that the decreased expression of h39C7 is related to the pathology of diabetes.
- a marker for a degenerative disease such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis and a marker for diabetes
- a Nogo receptor-like novel polypeptide which is a therapeutic drug for neurodegenerative disease and diabetes
- a method for quantifying and immunologically detecting the polypeptide of the present invention using the antibody a kit for detecting diabetes or a neurodegenerative disease containing the antibody, a method for quantifying mRNA for the polypeptide, and a method for quantifying the polypeptide.
- a method for screening a ligand, a method for screening a substance that changes the binding property between the polypeptide and a ligand, and a method for changing the expression of the polypeptide Screening method of a substance to be, knockout animals, trans diethylene Nick animal, antibodies of the present invention, the ligand, a pharmaceutical containing a substance for varying substance that alters the binding property, or the expression of the ligand is provided.
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Abstract
Description
Claims
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AU2003246254A AU2003246254A1 (en) | 2002-07-05 | 2003-07-03 | NOVEL Nogo RECEPTOR-LIKE POLYPEPTIDE AND DNA THEREOF |
JP2004519248A JPWO2004005510A1 (ja) | 2002-07-05 | 2003-07-03 | 新規Nogo受容体様ポリペプチドおよびそのDNA |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US8815508B2 (en) | 2008-08-12 | 2014-08-26 | Zinfandel Pharmaceuticals, Inc. | Method of identifying disease risk factors |
US8846315B2 (en) | 2008-08-12 | 2014-09-30 | Zinfandel Pharmaceuticals, Inc. | Disease risk factors and methods of use |
US9102666B2 (en) | 2011-01-10 | 2015-08-11 | Zinfandel Pharmaceuticals, Inc. | Methods and drug products for treating Alzheimer's disease |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002029059A2 (en) * | 2000-10-06 | 2002-04-11 | Yale University | Nogo receptor homologs |
WO2003018631A2 (en) * | 2001-08-27 | 2003-03-06 | Novartis Ag | Nogo receptor homologues and their use |
-
2003
- 2003-07-03 JP JP2004519248A patent/JPWO2004005510A1/ja not_active Withdrawn
- 2003-07-03 AU AU2003246254A patent/AU2003246254A1/en not_active Abandoned
- 2003-07-03 WO PCT/JP2003/008469 patent/WO2004005510A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002029059A2 (en) * | 2000-10-06 | 2002-04-11 | Yale University | Nogo receptor homologs |
WO2003018631A2 (en) * | 2001-08-27 | 2003-03-06 | Novartis Ag | Nogo receptor homologues and their use |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8815508B2 (en) | 2008-08-12 | 2014-08-26 | Zinfandel Pharmaceuticals, Inc. | Method of identifying disease risk factors |
US8846315B2 (en) | 2008-08-12 | 2014-09-30 | Zinfandel Pharmaceuticals, Inc. | Disease risk factors and methods of use |
US10865449B2 (en) | 2008-08-12 | 2020-12-15 | Zinfandel Pharmaceuticals, Inc. | Method of identifying disease risk factors |
US11021751B2 (en) | 2008-08-12 | 2021-06-01 | Zinfandel Pharmaceuticals, Inc. | Disease risk factors and methods of use |
US9102666B2 (en) | 2011-01-10 | 2015-08-11 | Zinfandel Pharmaceuticals, Inc. | Methods and drug products for treating Alzheimer's disease |
US9724339B2 (en) | 2011-01-10 | 2017-08-08 | Zinfandel Pharmaceuticals, Inc. | Methods and drug products for treating alzheimer's disease |
US11179375B2 (en) | 2011-01-10 | 2021-11-23 | Zinfandel Pharmaceuticals, Inc. | Methods and drug products for treating Alzheimer's disease |
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