WO2001004299A1 - Facteur regulant l'agglutination de la proteine beta-amyloide - Google Patents
Facteur regulant l'agglutination de la proteine beta-amyloide Download PDFInfo
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4702—Regulators; Modulating activity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4711—Alzheimer's disease; Amyloid plaque core protein
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4747—Apoptosis related proteins
-
- 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
- C07K14/475—Growth factors; Growth regulators
- C07K14/505—Erythropoietin [EPO]
-
- 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
- C07K14/52—Cytokines; Lymphokines; Interferons
- C07K14/524—Thrombopoietin, i.e. C-MPL ligand
-
- 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
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to a protein that suppresses or promotes aggregation and deposition of amyloid protein (hereinafter, also referred to as ⁇ ), a polynucleotide encoding the protein, a method for producing the protein using the polynucleotide, and a method for producing the same.
- TECHNICAL FIELD The present invention relates to an expression system involved in the production and a method for screening a compound that suppresses or promotes aggregation of amiloid 3 protein using the expression system.
- the present invention also relates to a method for treating and preventing Alzheimer's disease using a protein obtained by the above method or a compound obtained by screening. Background art
- Alzheimer's disease is a disease with impaired cognitive function and is characterized by the appearance of numerous senile plaques and neurofibrillary tangles along with loss of nerve cells.
- Senile plaques are detected from the earliest stages of the onset process, and are not seen in other neurodegenerative diseases and have high disease specificity.
- Amyloid iS protein is a major component of the senile plaque and forms an amyloid fiber having a ⁇ -sheet structure.
- ⁇ is a polypeptide composed of about 40 amino acid residues and having a molecular weight of about 400. Highly cohesive, easily forms fibers and insolubilizes.
- the major molecular species are ⁇ / 340, which ends with the 40th amino acid residue valine, and A42, which is 2 residues longer.
- a j3 is normally degraded and does not accumulate in the brain, but its degradation ability decreases with aging and accumulation occurs, which causes neurological dysfunction and neuronal cell death, eventually leading to dementia and Alzheimer's disease It is said that.
- Various genetic analyzes, molecular biology and neuropharmacology studies have led to the cause of this Alzheimer's disease.
- the “amyloid hypothesis” has been advocated. Disclosure of the invention
- An object of the present invention is to provide a protein that suppresses or promotes aggregation and deposition of amyloid protein and a polynucleotide encoding the same. Further, a method or substance that suppresses or promotes aggregation and deposition of amiloid; 3 protein The finding is to provide a method for treating Alzheimer's disease.
- the inventors of the present invention have found that polynucleotides encoding secretory or membrane-bound proteins that suppress or promote amyloid / 3 protein aggregation from neural progenitor cells. And completed the present invention.
- a polynucleotide encoding a protein that suppresses or promotes aggregation of the amyloid 3 protein according to any of (a) to (e) below.
- [4] A protein that suppresses or promotes aggregation of amyloid 3 protein, which is encoded by a polynucleotide originating from the same gene as the polynucleotide of [1] in molecular evolution.
- [5] A vector comprising the polynucleotide of any one of [1] and [2].
- An immunoassay method comprising a step of observing an immunological reaction between the peptide or protein of [3] and the antibody of [9].
- a candidate compound is brought into contact with a protein encoded by the polynucleotide of [1] or a cell that expresses the protein to induce aggregation or deposition of amyloid i3 protein.
- a method for screening a compound that regulates the expression of a protein encoded by the polynucleotide of [1], comprising the following steps:
- step (3) selecting a candidate substance that increases or decreases reporter activity in step (2) compared to a control
- a method for detecting Alzheimer's disease comprising the following steps.
- a step of associating the change in the expression state of the polynucleotide with Alhaima disease The protein of the present invention that suppresses or promotes amyloid protein aggregation and the polynucleotide encoding the protein are all or a part of the sequence represented by SEQ ID NO: 1, 3, 5, 7, or 9. Having the following sequence:
- the form of the polynucleotide of the present invention is not particularly limited as long as it encodes the protein of the present invention, and includes cDNA, genomic DNA, chemically synthesized DNA, and the like. Further, as long as it can encode the protein of the present invention, a polynucleotide having an arbitrary nucleotide sequence based on the degeneracy of the genetic code is included.
- the polynucleotide encoding the protein of the present invention can be obtained by a hybridization method using the polynucleotide sequence of SEQ ID NO: 1, 3, 5, 7, or 9 or a part thereof as a probe. It can be isolated by a conventional method such as a PCR method using a primer designed based on the nucleotide sequence information.
- the protein that suppresses or promotes aggregation of the amyloid protein which is the protein of the present invention, includes, for example, the sequence of the open reading frame of SEQ ID NO: 1, 3, 5, 7, or 9 It can be obtained by expressing in a transformant transformed with an expression vector.
- These expressed proteins can be purified and isolated from a culture solution or a cell fraction by a conventional method. Specific examples of the method for purification and isolation include the following methods. First, cells or supernatant are collected by a conventional method such as filtration and centrifugation, and for the cells, the cell wall and / or cell membrane of the cells is treated with, for example, ultrasound and / or lysozyme to obtain a cell membrane fraction.
- the obtained cell membrane fraction is dissolved in an appropriate aqueous solution.
- the protein of the present invention is isolated and purified from the supernatant or the cell membrane fraction according to a conventional method generally used for purifying and isolating natural or synthetic proteins. Isolation and purification methods include dialysis, gel filtration, and affinity using a monoclonal antibody against the protein of the present invention or a partial peptide thereof. Column chromatography, column chromatography on a suitable adsorbent, high performance liquid chromatography and the like are exemplified.
- the present invention also includes a polynucleotide encoding a protein functionally equivalent to the above-described protein.
- “functionally equivalent” means that the target protein has an activity of suppressing or promoting the aggregation of amyloid 5 protein.
- the activity of inhibiting or promoting amyloid protein aggregation can be confirmed, for example, by the method shown in Examples. That is, A and its fragments have the property of easily aggregating under certain conditions. Under these conditions, by adding the test protein, if the protein has the property of promoting A5 aggregation, the property can be grasped as A3 aggregation. .
- a fragment consisting of the amino acid sequence at the N-terminal position 1-28 of A ⁇ has been used in this kind of test as a partial peptide having A? Aggregation activity (Methods in Enzymology Vol. 309, 274). -284, 1999). Aggregation of A? Can be detected optically. Alternatively, it can be confirmed with a microscope after staining with Congoles or the like.
- a method for introducing a mutation into an amino acid sequence in a protein for example, site-specific It can be prepared using a mutagenesis method (Current Protocols in Molecular Biology edit. Ausubel et al. (1987) Publish. Jhon Wily & Sons Section 8.1-8.5)).
- Such proteins may also be caused by amino acid mutations in nature.
- the amino acid sequence SEQ ID NO: 2, 4, 6, 8, or 10, or SEQ ID NO: 1, 3, Amino acid sequence of the protein encoded by 5, 7, or 9), where one or more amino acids differ due to substitution, deletion, insertion and / or addition, etc. Protein is also included.
- a plurality of amino acids SEQ ID NO: 2, 4, 6, 8, or 10, or SEQ ID NO: 1, 3, Amino acid sequence of the protein encoded by 5, 7, or 9
- the number and location of amino acid mutations in a protein are not limited as long as the function is maintained.
- the number of mutations is typically within 10% of all amino acids, preferably within 5% of all amino acids, and more preferably within 1% of all amino acids.
- the present invention includes a case where a plurality of amino acid mutations are substituted as a plurality of amino acids.
- the amino acid to be substituted is preferably an amino acid having properties similar to the amino acid before substitution from the viewpoint of maintaining the function of the protein.
- Ala, Val, Leu, Ile, Pro, Met, Phe, and Trp are all classified as non-polar amino acids, and are considered to have similar properties to each other.
- examples of the non-charger include Gly, Ser, Thr, Cys, Tyr, Asn, and Gin.
- acidic amino acids include Asp and Glu.
- Examples of the basic amino acid include Lys, Arg, and His.
- a protein functionally equivalent to the protein identified in this example can also be isolated using a hybridization technique or a gene amplification technique well known to those skilled in the art. That is, those skilled in the art can use the hybridization technique (Current Protocols in Molecular Biology edit. Ausubel et al. (1987) Publish. Jhon Wily & Sons Section 6.3-6.4) to identify in this example.
- a polynucleotide having high homology to the nucleotide sequence (SEQ ID NO: 1, 3, 5, 7, or 9) or a part thereof is isolated based on the nucleotide sequence (SEQ ID NO: 1, 3, 5, 7, or 9) of the polynucleotide encoding the isolated protein.
- the present invention also includes proteins encoded by polynucleotides that hybridize with polynucleotides encoding these proteins, as long as they have the same function as the proteins identified in this example.
- Organisms that isolate functionally equivalent proteins include, for example, human and mouse. Vertebrates such as butterflies, rats, magpies, magpies, magpies, etc., but are not limited thereto. From these animals, a gene originating from a gene that is identical in molecular evolution to a gene of a protein that suppresses or promotes amyloid /? Protein aggregation according to the present invention can be isolated.
- the expression "originating from the same gene in molecular evolution” means that the gene of the present invention in humans is considered to have a molecular evolution by analyzing its polynucleotide base sequence and analyzing its physiological role. Genes that are reasonably judged to have evolved from the same gene. Such genes maintain a high degree of homology in their nucleotide sequences.
- the stringent conditions for hybridization to isolate a polynucleotide encoding a functionally equivalent protein are usually ⁇ lxSS 0.1% SDS, 37 ° C
- the more severe condition is about 0.5xSSC, 0.1% SDS, 42 ° C, and the more severe condition is about 0.1xSSC, O.SDS, 65 ° C; Yes, isolation of polynucleotides having higher homology to the probe sequence can be expected as hybridization conditions become more stringent.
- the combination of the above SSC, SDS, and temperature conditions is merely an example, and those skilled in the art will recognize the above or other factors (eg, probe concentration, probe) that determine the stringency of the hybridization. , And the hybridization reaction time, etc.) can be used to realize the same stringency as above.
- the protein isolated using such a hybridization technique is the protein of the present invention described in SEQ ID NO: 2, 4, 6, 8 or 10 or SEQ ID NO: 1, 3, 5, 7 or 9
- the protein usually has a higher homology in its amino acid sequence or the nucleotide sequence encoding the protein.
- High homology means at least 60% or better It preferably refers to 70% or more, more preferably 80% or more, more preferably 90% or more, and most preferably 95% or more sequence identity.
- the homology can be identified using the BLAST2 search algorithm (Altschul, SF et al, 1997, Gapped BLAST and PS I-BLAST: a new generation oi protein database search programs, Nucleic Acids Res. 25: 3389-3402). Can be determined.
- PCR gene amplification technology
- Primers are designed based on a part of the nucleotide sequence (SEQ ID NO: 1, 3, 5, 7, or 9), and a polynucleotide fragment having high homology to these polynucleotide sequences or a part thereof is isolated. Based on this, it is also possible to obtain a protein functionally equivalent to the protein identified in this example.
- the present invention also relates to a partial peptide of the protein of the present invention, and a polynucleotide encoded by the partial peptide.
- the partial peptide of the present invention has an amino acid sequence of at least 7 amino acids, preferably 9 amino acids or more, more preferably 12 amino acids or more, more preferably 15 amino acids or more.
- the partial peptide of the present invention is produced, for example, by a genetic engineering technique, a known peptide synthesis method, or by cleaving the protein of the present invention with an appropriate peptidase.
- the present invention also provides an expression vector containing any one of the polynucleotides. Furthermore, the present invention provides a method for culturing a transformant which retains the polynucleotide or any of the expression vectors, and a transformant thereof, and isolating the protein of the present invention from the culture.
- the present invention relates to a method for producing a protein which suppresses or promotes aggregation of amyloid 5 protein, or a method for producing a partial peptide thereof. Further, the present invention provides a protein produced by the above method, or a partial peptide thereof. Things.
- polypeptides When polypeptides are produced by genetic recombination techniques, the type and degree of glycosylation of the target polypeptide can be obtained depending on the type of host cell, and the so-called secretion of polypeptides
- the terminal (N-terminal and / or C-terminal) amino acid sequence of the precursor polypeptide expressed in the host cell is processed by signal peptide, etc., and various terminal amino acid sequences are converted. It is well known to those skilled in the art that a polypeptide having the same can be obtained. Therefore, it is easily understood by those skilled in the art that such a polypeptide is also included in the scope of the protein of the present invention.
- the present invention also includes an expression vector constructed by a method known in the art based on the polynucleotide sequence of the present invention.
- Microbial cells that can be used to express a polynucleotide encoding the protein of the present invention include, for example, prokaryotic bacteria [Escherichia coli and Bacillus subtilis] and eukaryotic yeast [ For example, baker's yeast (Saccaromyces cerevisiae)].
- Mammalian cells include cultured human cells and cultured animal cells. Furthermore, cultured plant cells can also be used. Examples of microorganisms include bacteria belonging to the genus Escherichia (eg, E. coli HBlOl ATCC 33694, E. coli HB101-16 FERM BP-1872, E. coli MM294 ATCC 31446, E.
- mammalian cells include human fetal kidney-derived HE There are K293 cells, mouse L920 cells and Chinese Hamster-Ovali (CHO) cells.
- the expression vector is at least a promoter, an initiation codon, a polynucleotide encoding the amino acid sequence of the protein of the present invention, and a termination codon. And self-replicatable units (units).
- the expression vector should include at least a promoter, an initiation codon, a polynucleotide encoding the amino acid sequence of the protein of the present invention, and a stop codon. It is preferably composed of don.
- enhancer sequences, 5,-and 3'-non-coding regions, polyadenylation sites and self-replicatable units of the proteins of the invention may also be inserted.
- the above self-replicatable unit preferably contains a transformant selection marker (for example, ampicillin resistance).
- a transformant selection marker for example, ampicillin resistance
- promoter is used to refer to the promoter
- Examples of such promoters include the conventional promoter's overnight region (eg, lactose operon, PL-promoter, trp-promoter, etc.).
- One example of a promoter used in an expression vector with an yeast host is the pho5 promoter.
- a basic amino acid having an affinity for a metal ion chelate can be added to any terminal in the protein of the present invention.
- PCR can be performed at any end of the target gene by performing PCR using a primer having a base sequence having a continuous base sequence encoding the desired amino acid added to the 5 ′ side. Oligopeptides can be added.
- Basic amino acids include histidine, lysine, Guinine and the like can be used.
- promoters used for expression vectors in mammalian cells include HTLV-LTR promoter, SV40 early and late promoter, CMV promoter—Mice, and mouse 'meta-mouth thionein I (MMT).
- MMT mouse 'meta-mouth thionein I
- -One example is Promo.
- An example of a preferred initiation codon is methionine codon (ATG).
- a polynucleotide encoding the amino acid sequence of the protein of the present invention can be obtained, for example, by partial or total synthesis using an MA synthesizer. Alternatively, it can be obtained from a human cDNA library using a probe or primer set based on the nucleotide sequence of SEQ ID NO: 1, 3, 5, 7, or 9.
- genomic DNA must be processed as usual (eg, digestion with restriction enzymes, dephosphorylation with bacterial alkaline phosphatase, phosphorylation with T4 polynucleotide kinase, ligation with T4 DNA ligase).
- a genomic DNA encoding the protein of the present invention can be prepared.
- the transcription start site of the gene of the present invention in the genome can be clarified, and the expression control region located further upstream can be specified.
- Control regions such as promoters and enhancers that control the expression of the gene encoding the protein of the present invention are useful as target regions for detecting abnormal expression of the protein of the present invention.
- the expression can be controlled by decoy nucleic acid drugs targeting these regions.
- the host cells of the present invention also include cells of interest for use in analyzing the function of the protein of the present invention and screening for its function inhibitor or function promoter using this protein.
- Transduction of vectors into host cells can be performed, for example, by calcium phosphate precipitation or electropulse perforation (Current protocols in Molecular Biology edit. Ausubel et al. (1987) Publish. John Wiley & Sons. Section 9.1-9.9), the ribofectamine method, the microinjection method, and the like.
- Preparation of the protein of the present invention from a transformant can be carried out by using a protein separation / purification method known to those skilled in the art.
- the present invention also provides a polynucleotide comprising the nucleotide sequence of SEQ ID NO: 1, 3, 5, 7, or 9, or a polynucleotide comprising at least 15 nucleotides complementary to a complementary strand thereof.
- the “complementary strand” refers to one strand of the double-stranded polynucleotide composed of ⁇ ⁇ : ⁇ ( ⁇ : ⁇ ) and G: C base pairs with respect to the other strand.
- “complementary” is not limited to a sequence completely complementary to at least 15 contiguous nucleotide regions, but is at least 70%, preferably at least 80%, and more preferably 90%. More preferably, it should have 95% or more homology on the base sequence.
- the algorithm for determining homology may be the one described in this specification.
- Such a polynucleotide can be used as a probe for detecting and isolating DNA or RNA encoding the protein of the present invention, and as a primer for amplifying the polynucleotide of the present invention. It is. When used as a primer, it usually has a chain length of 15 bp to 100 bp, preferably 15 bp to 35 bp. When used as a probe, a polynucleotide having at least a part or all of the sequence of the polynucleotide of the present invention and having a chain length of at least 15 bp is used. When used as a primer, the 3'-side region must be complementary, but a restriction enzyme recognition sequence or a tag can be added to the 5'-side.
- the polynucleotide of the present invention can be used for testing and diagnosing abnormalities of the protein of the present invention.
- abnormal expression can be examined by Northern hybridization or RT-PCR using the polynucleotide of the present invention as a probe or primer.
- expression Includes transcription and / or translation.
- the use of an antibody against the protein of the present invention described below enables examination / diagnosis of gene expression at the translation level.
- a polynucleotide encoding the protein of the present invention and its expression control region are amplified by genomic DNA-PCR or RT-PCR by polymerase chain reaction (PCR) using the polynucleotide of the present invention as a primer, and RFLP Sequence abnormalities can be inspected and diagnosed by methods such as analysis, SSCP, and sequencing.
- PCR polymerase chain reaction
- a polynucleotide comprising at least 15 nucleotides complementary to a polynucleotide consisting of the nucleotide sequence of SEQ ID NO: 1, 3, 5, 7, or 9 or a complementary strand thereof includes the protein of the present invention.
- antisense polynucleotides for suppressing the expression of E. coli has a chain length of at least 15 bp or more, preferably 100 bp, more preferably 500 bp or more, and usually has a chain length of 3000 bp or less, preferably 2000 bp or less in order to cause an antisense effect. Having.
- Such antisense polynucleotides can also be applied to gene therapy for diseases caused by abnormalities (functional abnormality or abnormal expression) of the protein of the present invention.
- abnormalities functional abnormality or abnormal expression
- aggregation and deposition of amyloid 5 protein is thought to trigger and lead to brain neuronal cell death and neuronal dysfunction. Therefore, if the expression of the protein that promotes aggregation of the amyloid ⁇ protein of the present invention can be inhibited, it can be used for treating or preventing the onset of Alzheimer's disease.
- the expression of the protein of the present invention that suppresses the aggregation of amyloid protein can be inhibited, the aggregation of amyloid protein can be promoted to create an Alheimer's model.
- the antisense polynucleotide is, for example, the polynucleotide of SEQ ID NO: 1, 3, 5, 7 or 9. Based on the sequence information of Reochido Hosuhorochioe Ichito method (Stein, 1988 Physicoch emical properties of phosphorothioate o ⁇ igodeoxynucleotides.
- Nucle ic Acids Res 16, 3209-21 (1988)) c of the present invention can be prepared by such When polynucleotides or antisense polynucleotides are used for gene therapy, for example, viral vectors such as retrovirus vectors, adenovirus vectors, and adeno-associated virus vectors, and non-viral vectors such as ribosomes, etc. Is used to administer to patients by the ex vivo method or the in vivo method.
- viral vectors such as retrovirus vectors, adenovirus vectors, and adeno-associated virus vectors
- non-viral vectors such as ribosomes, etc.
- the present invention also provides an antibody that binds to the protein of the present invention.
- the form of the antibody of the present invention is not particularly limited, and includes a polyclonal antibody, a monoclonal antibody, and a part thereof having antigen-binding properties. Also includes all classes of antibodies. Furthermore, the antibodies of the present invention also include special antibodies such as humanized antibodies.
- the antibody of the present invention can be obtained by synthesizing the protein or partial peptide of the present invention and immunizing rabbits (Current protocols in Molecular Biology edit. Ausubel et al. (1987) Publish. John Wiley & Sons. Section 11.12-11.13)
- mice are immunized with the protein or partial peptide of the present invention, and spleen cells are It can be obtained from hybridoma cells obtained by cell fusion of myeloma cells (Current protocols in Molecular Biology edit. Ausubel et al. (1987) Publish. John Wiley & Sons. Section 11.4 to 11.11).
- Antibodies that bind to the protein of the present invention may be used for, for example, inspection and diagnosis of abnormal expression or structural abnormality of the protein of the present invention, in addition to purification of the protein of the present invention.
- proteins are extracted from tissues, blood, or cells, and abnormalities in expression and structure are detected through detection of the proteins of the present invention by methods such as Western blotting, immunoprecipitation, and ELISA. Inspection / presence can be diagnosed.
- An antibody that binds to the protein of the present invention may be used for purposes such as treatment of a disease associated with the protein of the present invention.
- human antibodies or humanized antibodies are preferred because of their low immunogenicity.
- a human antibody is a mouse in which the immune system is replaced with that of a human (see, for example, “Functional transplant of megaoase human immunoglobul in loc i recapitulates human antibody response in mice, Mendez, M.J. et al. (1997) Nat. Genet. 15: 146-156 ”).
- a humanized antibody can be prepared by genetic recombination using the hypervariable region of a monoclonal antibody (Methods in Enzymology 203, 99-121 (1991)).
- the protein encoded by the polynucleotide of SEQ ID NO: 1, 3 or 7 has the activity of inhibiting the aggregation of amide /? Protein as shown in the Examples, and is used in patients with Alzheimer's disease. , Its expression level is decreasing. Therefore, enhancing the expression of these proteins suppresses amyloid protein aggregation and is effective for treating and preventing the onset of Alzheimer's disease. Furthermore, these proteins and their functionally equivalent proteins can themselves be used as therapeutic and preventive agents for Alzheimer's disease.
- the protein encoded by the polynucleotide of SEQ ID NO: 5 or 9 has the activity of promoting the aggregation of amiide /? Protein as shown in the Examples, and in Alzheimer's disease patients, Its expression level is increasing. Therefore, by reducing the expression of these proteins, the aggregation of the amyloid 5 protein is suppressed, which is effective for the treatment and prevention of Alzheimer's disease.
- the protein of the present invention may be used for other amyloidosis, specifically, Schizophrenia and related neuropathy, rheumatoid arthritis, tuberculosis, leprosy, bronchiectasis, systemic lupus erythematosus (SLE), dialysis amyloidosis, diabetic amyloidosis, atrial amyloidosis, etc. It is expected to be related to the disease of the present invention, and can be used as an agent for treating and preventing the onset of these diseases, or for screening of a therapeutic / prophylactic agent.
- amyloidosis specifically, Schizophrenia and related neuropathy, rheumatoid arthritis, tuberculosis, leprosy, bronchiectasis, systemic lupus erythematosus (SLE), dialysis amyloidosis, diabetic amyloidosis, atrial amyloidosis, etc. It
- the present invention also provides a method for screening a compound that regulates the activity of the protein of the present invention. Since the protein of the present invention suppresses or promotes amyloid /? Protein aggregation, the compound that regulates the expression of the product of the gene regulates amyloid protein aggregation to treat or prevent Alzheimer's disease. It is useful as a drug to do.
- the screening method is as follows.
- the candidate compound is brought into contact with the protein of the present invention or a cell expressing the protein of the present invention under conditions under which amyloid protein aggregation occurs, and a candidate compound that suppresses aggregation of the amyloid 3 protein is selected.
- a solution containing the amyloid /? Protein (A540, A542, A528, etc.) is added to a solution of the protein of the present invention, for example, SEQ ID NO: 1, 3, 5, 7, or Or a protein functionally equivalent to the protein, or a protein functionally equivalent to the protein, or a cell expressing these proteins, or a candidate compound, and then aggregates the protein.
- the fluorescent intensity can be measured using a fluorescent dye that binds to the aggregated amyloid protein, for example, thioflavin-T.
- the present invention relates to a method for screening a compound that regulates the expression of a protein encoded by the polynucleotide of the present invention, comprising the following steps.
- step (3) selecting a candidate substance that increases or decreases reporter activity in step (2) compared to a control
- control region of the gene is cloned from chromosomal DNA, and a reporter gene (eg, luciferase, galactosidase, GFP (Green Fluorescent Protein)) is placed downstream of the control region gene.
- a reporter gene eg, luciferase, galactosidase, GFP (Green Fluorescent Protein)
- SEQ ID NO: 1 SEQ ID NO: 3, SEQ ID NO: 5, SEQ ID NO: 7, and SEQ ID NO: 9 It can be cloned by known methods.
- the S1 mapping method is known as a method for identifying the transcription start site (“Isolation of transcription regulatory region” and “Identification and purification of transcription control factor”, “Cell Engineering Supplement 8 New Cell Engineering Experimental Protocol”) , Shujunsha 1993, p362 -374).
- the expression control region DNA of the gene is obtained by adding a human chromosome library (genomic library) to the 5 'end of the gene at 15 to 100 bp, preferably 30 to 5 Obp as probe DNA. It is cloned as a gene clone containing an expression control region by screening using the gene. The clones obtained in this way are often 5 ' Includes untranslated regions.
- the 5 'end of these clones is shortened or fragmented by exonuclease treatment or the like.
- the minimum unit required to maintain the activity of the expression control region can be obtained (deletion study) .
- a program for predicting the gene expression control region using a neural network is known (htD: //www-fruittf1v.ora/seatools/promoter.html, Reese, MG).
- an expression plasmid in which a reporter gene is functionally linked is prepared downstream of the thus isolated control region gene, and the expression plasmid is introduced into appropriate cells.
- the functional linkage means that the two are linked so that activation of the expression control region initiates transcription of a reporter gene.
- the reporter gene any gene can be used as long as it encodes a protein whose activation of the expression control region can be observed as gene expression.
- Genes such as luciferase, ⁇ -galactosidase, and GFP (Green Fluorescent Protein) are commonly used as reporter genes.
- the cell into which the vector is introduced for example, an animal cell in which the gene has been deleted can be used.
- animal cells from which the gene has been deleted are transformed with the present expression plasmid.
- Expression of the repo overnight gene due to transcriptional activity of the control region is detected as color development or luminescence.
- the cell line is seeded in a 96-well multiplate, and a compound to be screened is added to each well, whereby a compound that suppresses or promotes the expression of the expression product of the gene is obtained.
- a method for selecting a compound for example, when GFP is used as the reporter gene, the selection can be made by comparing the luminescence of GFP with and without the addition of the drug.
- the comparison suggests a case where the luminescence amount ratio is 2 times or more or 1/2 or less, preferably 5 times or 1/5 or less, more preferably 10 times or more or 1/10 or less.
- This method can be used for both eukaryotic and prokaryotic organisms, as long as it is a host that causes the expression of repo-only genes in animal cells as well as in similar systems.
- test sample used for the screening includes, for example, a cell extract, an expression product of a gene library, a synthetic low-molecular compound, a synthetic peptide, a natural compound, and the like.
- the test samples described here are examples, and the present invention is not limited to these specific examples.
- the compound isolated by this screening is a candidate for a compound (agonist, angiogonist) that promotes or inhibits the activity of the protein of the present invention.
- it is a candidate for a compound that inhibits the interaction of the protein of the present invention with a molecule that interacts with the protein.
- These compounds are expected to be applied as pharmaceuticals for preventing or treating the protein-related diseases of the present invention.
- the present invention relates to a pharmaceutical use of the compound obtainable by the screening of the present invention. That is, the present invention relates to use in treating or preventing Alzheimer's disease or controlling amyloid i3 protein aggregation, which contains a compound obtainable by the screening as a main component.
- the present invention relates to a therapeutic agent for Alzheimer's disease and a preventive agent for the onset of the disease, characterized by containing these compounds as main components.
- the compounds obtained by the screening method of the present invention include other amyloidosis, specifically, schizophrenia and related neuropathy, rheumatoid arthritis, tuberculosis, leprosy, bronchiectasis. , SLE, dialysis amyloidosis, diabetic amyloidosis, atrial amyloidosis, etc. It can also be used for screening prophylactic agents.
- the proteins, nucleotides, antibodies and compounds isolated by the above screening of the present invention are useful for regulating amyloid / 3 protein aggregation.
- they can be used as pharmaceuticals themselves, but they can also be formulated and used by known pharmaceutical methods.
- it may be used in the form of a formulation by appropriately combining with a pharmacologically acceptable carrier or medium, specifically, sterile water, physiological saline, vegetable oil, emulsifier, suspending agent and the like.
- Administration to a patient can be performed by a method known to those skilled in the art, such as intraarterial injection, intravenous injection, and subcutaneous injection.
- the dose varies depending on the weight and age of the patient, the method of administration, and the like, but those skilled in the art can appropriately select an appropriate dose.
- gene therapy may be performed by incorporating the polynucleotide into a vector for gene therapy.
- the dose and the administration method vary depending on the patient's weight, age, symptoms, and the like, but can be appropriately selected by those skilled in the art.
- the protein of the present invention is expected to have a physiological activity in addition to the activity of inhibiting or promoting amyloid protein aggregation. They can be determined using the following methods.
- the protein of the present invention is a secreted protein or a membrane protein, and its amino acid sequence has been clarified, it can be expressed as a recombinant by applying an appropriate expression system, or it can be expressed as a recombinant protein.
- an antibody that specifically recognizes amidate it is possible to analyze whether or not it has a biological activity other than the activity of suppressing or promoting the aggregation of amyloid protein.
- the protein of the present invention is described in, for example, “Glycobiology” (M. Fukuda, A. Kobata, 1993) and “Growth Factoers” (I. McKay, I. Leigh, 1993) of “The Practical Approach Seriesj (IRL PRESS)”. , Extracellular Matrix (MAHaralson, JRHassell ed., 1995), or Glycoprotein Analysis in Biomedicine (Elizabeth F. Hounse 11, 1993) of the Series of Method in Molecular Biology (Humana Press). Thus, the biological activity of each protein can be analyzed. Or "The Biochemical Society of Japan, New Chemistry Laboratory Course, 7 Growth Differentiation Factors and Their Receptors” (published in 1991). Tokyo Chemical Co., Ltd.
- a novel ligand-receptor relationship can be found by screening the membrane protein provided by the present invention based on the binding activity to a known ligand ⁇ receptor. Screening can be performed according to a known method.
- cells expressing the receptor of the protein of the present invention can be screened as follows. That is, (a) a step of contacting a test cell sample with the protein of the present invention or its partial peptide, and (b) a step of selecting cells that bind to the protein or its partial peptide. It is possible to screen for the receptor.
- This screening can be performed, for example, as follows. First, the protein of the present invention is expressed to obtain a purified recombinant protein. Next, the purified protein is labeled, binding assays are performed on various cell lines or primary cultured cells, and cells expressing the receptor are selected based on the assay (Honjo, Arai, Taniguchi, Muramatsu ed. Experimental course 7 Growth differentiation factor and its receptor P203-236 (1991) Tokyo Chemical Dojin). Is a label, other RI labels such as 125 1, enzymes (alkaline phosphatase, etc.) label are possible. It is also conceivable that the protein of the present invention is used without labeling and the antibody against the protein of the present invention is labeled and used for detection. Cells expressing the receptor for the protein of the present invention obtained by the above-described screening can be used for screening for agonist to antagonist of the receptor as described later.
- a receptor for the protein of the present invention and its receptor If cells expressing the same are obtained, compounds that inhibit the binding of the protein of the present invention to its receptor or a cell that expresses the receptor can be used as an index, such as a receptor agonist or antagonist. G) can be screened.
- This screening method comprises the steps of (a) contacting the protein of the present invention with a receptor for the protein or a cell expressing the receptor in the presence of a test sample; (b) Detecting the binding activity to the body or cells expressing the receptor; and (c) selecting a compound that reduces the binding activity as compared to the case where the binding activity is detected in the absence of the test sample; including.
- Test samples used for screening include, but are not limited to, cell extracts, expression products of gene libraries, synthetic low molecular compounds, synthetic peptides, natural compounds, and the like.
- the compound isolated by the above-described screening using the binding activity to the protein of the present invention as an index can also be used as a test sample.
- the compound isolated by this screening is a candidate for the receptor of the protein of the present invention. Based on changes in intracellular signals such as phosphorylation due to decreased binding activity between the protein of the present invention and its receptor, the obtained compound is an agonist or an antagonist of the receptor of the protein of the present invention. It can be determined whether there is.
- the compound obtained is a molecule that interacts with the protein of the present invention in vivo.
- secreted proteins they may be factors that control cell states such as cell proliferation and differentiation.
- factors that control new cell states By adding the secreted protein provided by the present invention to a certain kind of cells, if the cell state changes such as cell proliferation and differentiation and the activation of specific genes in the cell are screened, It is possible.
- This screening can be performed, for example, as follows. First, the protein of the present invention is expressed to obtain a purified recombinant protein. Next, the purified protein is added to various cell lines or primary culture cells, and cell changes such as proliferation and differentiation are examined. Alternatively, induction of a gene that is known to act on a specific change in the state of a cell is detected based on the amount of mRNA and the amount of protein. Alternatively, detection is based on the amount of a substance (such as a low molecular compound) in a cell that has been changed by the action of a gene product (protein) that is known to act on a specific change in the state of a cell.
- a substance such as a low molecular compound
- the protein according to the present invention controls the cell state and function by such screening
- the protein of the present invention may be modified as it is or partially suitable for a related disease.
- application to pharmaceuticals is conceivable.
- the secretory protein provided by the present invention is used for screening based on the binding activity to a known ligand ⁇ receptor, a new ligand-receptor can be obtained. It is possible to find the relationship between the two, and it is possible to determine agonist and antagonist in the same manner.
- the compound thus obtained is also a candidate for a compound that inhibits the interaction with a molecule (including a receptor) that interacts with the protein of the present invention in vivo. These compounds can be applied to preventive or therapeutic drugs for diseases associated with the protein of the present invention.
- the protein of the present invention is expressed to obtain a purified recombinant protein.
- the affected proteins and genes are purified and screened based on their binding.
- screening is performed by adding compounds that are candidates for the inhibitor in advance and then observing the change in their binding.
- Compounds obtained by such screening are considered to be applied to pharmaceuticals for diseases associated with the protein according to the present invention.
- the regulatory factor obtained by screening is a protein, similarly, if there is a compound that has no intrinsic effect on the expression and activity of the protein, the compound is related to the protein according to the present invention. It can be applied to medicines for diseases.
- the secretory protein or membrane protein according to the present invention has activity as an enzyme
- a compound is added to the protein provided by the present invention under appropriate conditions, and the activity of the protein is determined by using the change in the compound as an indicator. Can be clarified. Screening of a compound that inhibits the activity of the protein according to the present invention is also possible using this activity as an index.
- This screening can be performed, for example, as follows. First, the protein of the present invention is expressed to obtain a purified recombinant protein. Next, a compound is added to the purified protein, and the amount of the compound and the amount of the reaction product are determined. Alternatively, a candidate compound for the inhibitor is added in advance, and then a compound (substrate) that reacts with the purified protein is added, and changes in the amount of the substrate and the amount of the reaction product are examined.
- the compound obtained by such screening is considered to be applied to a drug for a disease associated with the protein of the present invention.
- the secretory protein or membrane protein of the present invention is a novel disease-related protein depends on the protein of the present invention in addition to the above. It can be obtained by examining the correlation between a specific disease and the expression level or activity of a protein using a protein specific recognition antibody. An analysis can be performed with reference to "Molecular Diagnosis of Genetic Diseases” (edited by Rob Elles, 1996) by Method in Molecular Biology J (Humana Press), Inc. An antibody that binds to the protein of the present invention is: In addition to the purification of the protein of the present invention, it may be used, for example, for testing and diagnosing abnormal expression or structural abnormality of the protein of the present invention. By extracting the protein and detecting the protein of the present invention by a method such as Western blotting, immunoprecipitation, or ELISA, the presence or absence of abnormal expression or structure can be examined.
- a method such as Western blotting, immunoprecipitation, or ELISA
- the present invention relates to a method for detecting Alzheimer's disease, comprising the following steps.
- a polynucleotide set forth as at least one SEQ ID NO selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 3, SEQ ID NO: 5, SEQ ID NO: 7, and SEQ ID NO: 9 Measuring the expression state of
- the expression status of the polynucleotide can be determined by analyzing any step of the process in which the gene is transcribed into mRNA and translated into protein. More specifically, for example, by measuring mRNA consisting of the nucleotide sequence as the polynucleotide, You can know the state. mRNA can be measured by a known technique such as Northern hybridization RT-PCR. Alternatively, by measuring a protein comprising the amino acid sequence encoded by the polynucleotide or a fragment thereof, the state of translation into the protein can be known. Proteins can be measured by various methods such as the "Estanblot method" using an antibody recognizing the protein.
- the test method according to the present invention can be performed on a blood sample or a cerebrospinal fluid sample of a patient. Alternatively, hippocampal tissue removed by necropsy can be targeted.
- hippocampal tissue removed by necropsy can be targeted.
- an in situ hybridization / histoimmunological analysis technique is used.
- if the expression status of PSEC256 is increased as compared with the result in the case where there is no abnormality in the brain, it can be associated with Alzheimer's disease.
- PSEC0012, PSEC0220, PSEC0242, or the like is observed, it can be linked to Alzheimer's disease.
- the present invention also relates to a reagent for clarifying the expression state of the polynucleotide of the present invention. More specifically, the present invention relates to the use of a polynucleotide having a length of at least 15 bases complementary to the polynucleotide of the present invention or a complementary strand thereof for the detection of the polynucleotide of the present invention. About. Alternatively, the present invention relates to use of an antibody recognizing the protein of the present invention for detecting the protein. BEST MODE FOR CARRYING OUT THE INVENTION
- NT-2 neural progenitor cells purchased from stratagene
- retinoic acid using teratocarcinoma cells derived from human fetal testis
- cultured cells were prepared under the following conditions.
- NT2RM1 Culture of NT-2 cells without retinoic acid induction
- poly (A) + RNA was purified on oligo dT cellulose.
- a cDNA library was prepared from each poly (A) + RNA by the oligo cap method [M. Maruyaraa and S. Sugano, Gene, 138: 171-174 (1994)].
- 01 igo-cap linker (agcaucgagu cggccuuguu ggccuacugg / rooster cl column number: 11) and Oligo dT primer (gcggctgaag acggcctatg tggccttttttttttttttttttttttttttttttttttttttttttttttZ sequence number: 12)
- BAP Bacterial Alkaline Phosphatase
- TAP tobacco Acid Phosphatase
- clones with an input cDNA size of 1 kb or less for NT2RM1, PLACE1, and HEMBA1 and clones with an input cDNA size of 2 kb or less for NT2RP3
- DNA sequencing reagent Dye Terminator Cycle Sequencing FS Ready Reaction Kit, dRhodamme Terminator Cycle Sequencing FS Ready Reaction Kit or 'BigDye Terminator Cycle Sequencing FS Ready Reaction Kit. Kit, PE Biosystems
- the sequencing reaction according to the manual and then the DNA base sequence was analyzed using a DNA sequencer (ABI PRISM 377, PE Biosystems).
- An oligocap high-length cDNA library other than NT2RM1 was prepared using the expression vector PME18SFL3 capable of expression in eukaryotic cells.
- the SRa promoter and SV40 small t intron are integrated upstream of the cloning site, and the SV40 polyA additional signal sequence site is inserted downstream thereof.
- the cloning site of PME18SFL3 is an asymmetric Dralll site, and a complementary Sfil site is added to the end of the cDNA fragment, so that the cloned cDNA fragment is unidirectional downstream of the SRa promoter. It is inserted in sex.
- the gene in a clone containing the full-length cDNA, the gene can be transiently expressed by directly introducing the obtained plasmid into COS cells. That is, it is very easy to experimentally analyze it as a gene product protein or as its biological activity.
- the total length of the 5'-end of the cDNA of the library It was determined in the following way. For all clones where the known human mRNA and 5'-end sequence in the public database match, the 5'-end is longer than the known mRNA sequence in the public database, and the 5'-end is shorter but translation starts. Codons were judged to be “full length” if they had one, and "non-full length” if they did not contain the translation initiation codon.
- the total length of the 5'-end of the cDNA clones in each library [number of full-length clones Z (number of full-length clones + number of non-full-length clones)] was determined by comparing with human known mRNA (NT2RM1: 69%; NT2RP3). PLACE1: 68%; HEMBA1: 53%). From this result, it was found that the full length ratio of the 5'-end sequence was very high.
- HEMBA1 PSEC0220
- NT2RM1 PSEC0012
- NT2RP3 PSEC0242, PSEC0256
- nucleotide sequence of the full-length cDNA and the deduced amino acid sequence of the clone selected in this manner were determined.
- the nucleotide sequence was determined by combining the following three methods, completely overlapping the nucleotide sequences determined by each method, and determining the final definitive nucleotide sequence.
- PSEC0012, PSEC0129, and PSEC0220 were predicted to be secretory proteins or membrane proteins with a signal sequence at the N-terminus, and full-length cDNA clones.
- PSEC0242 and PSEC02 56 has no signal sequence at the N-terminus, but is a membrane protein, and was predicted to be a full-length cDNA clone, provided that PSEC242 starts translation from the third ATG.
- a signal sequence could be found at the N-terminus.
- PSEC0242 No. 3 ATG, ATGpr10.82, SP-Yes, 0RF 171-1343 391 aa, Sign al peptide 24;
- Presence or absence of signal sequence or signal sequence prediction results using PS0RT, membrane protein prediction results using MEM STAT and S0SUI
- PSEC0012 // C-NT2R 1000853 // 1499 // 183 // 1 // 0.82 // 125/183 (68.3%) aa i dentity to fugu putative protein 2 (PUT2).
- PSEC0129 // C-PLACE1004170 // 1828 // 135 // 1 // 0.94 // 1564/1615 (96%) simi larity to human chromosome 16ql3 / 21 BAC clone CIT987SK- A-152E5 PSEC0220 // C-HEMBA1005301 // 1584 // 365 // 1 // 0.94 // 354/365 (96%) aa ide ntity to mouse WNT-6 protein precursor; 1084/1310 (82%) similarity to mouse Wnt-6 mRNA
- PSEC0242 // C-NT2RP3000266 // 3017 // 401 // 1 // 0.90 // No & transmembrane // 242/242 (100%) simirality to human Newcastle disease virus inducib le protein mRNA, partial 3 'UTR region; 85/341 (24%) aa identity to human myosin heavy chain.
- COS cells (6 million cells / dish) were seeded, and the expression plasmid (10 // g) obtained in Example 1 was added together with LIPOFECTAMINE (Gibco BRL) (10 xl), and the gene was transferred to C0S7 cells. Introduced. Expression of the gene thus produced
- the recombinant cells to be cultured were cultured in D-MEM, 10% FCS, Pc. Sra. (+) Medium for 3 days. After the culture, the culture supernatant was collected as a supernatant fraction.
- the protein that promotes or suppresses amyloid / 3 protein aggregation was screened using the supernatant described in Example 5.
- the test basically followed the method 4 described in Methods in Enzyraology Volume 309 (1999) p 274-284 i.
- 3 protein has the same aggregating ability as that of A ⁇ 1-2 from the N-terminal to 28 residues of A, instead of using A40 and A342, which are normally present in vivo. 8 was used for the test.
- PSEC0012 expression supernatant of clone of sequence 1 2 4%
- PSEC0220 expression supernatant of clone of sequence 5
- PSEC0242 expression supernatant of clone of sequence 76%
- PSEC0256 expression supernatant of clone of sequence 9 4 6 0%
- the expressed proteins of the clones containing the polynucleotides of SEQ ID NOs: 1, 3, and 7 in the sequence listing suppressed the aggregation of the amyloid / 3 protein, and expressed the clones containing the polynucleotides of SEQ ID NOs: 5 and 9 of the sequence listing.
- the protein promoted aggregation of the amyloid 3 protein.
- Hippocampus cDNA (No. 0550903) of an Alzheimer's patient (60 years old) and hippocampus cDNA of a normal person (28 years old) (No. 0510069) were purchased and used from BioChain Institute Inc.
- the expression level was analyzed using PRISM 7700 of PE Applied Biosystems according to the protocol for quantitative PCR using SYBR Green (P / N 4304965).
- the following four sets of primers were used for PCR.
- PSEC012-894F GTGGATGCGATCTGTCTCTCC (SEQ ID NO: 15)
- PSEC012-1049R TGCAGAAAGGAACACATGCTG (SEQ ID NO: 16)
- PSEC129-190F CTTCCATGCTTCAGCTGTGG (SEQ ID NO: 17)
- PSEC129-340R GCCCTGGTCTGTATACCTGGG (SEQ ID NO: 18)
- PSEC242-599F CTACGACCTGAGCCAGTGCA (SEQ ID NO: 19)
- PSEC242-749R GAGGGCTTGGAGCTGCTGT (SEQ ID NO: 20)
- PSEC256-1502F GCATTCTACGGGCTGGTCC (SEQ ID NO: 21)
- PSEC256-1652R GGGTTGCCTGGTCCGTATT (SEQ ID NO: 22)
- a protein that suppresses or promotes aggregation and deposition of amyloid i3 protein and a polynucleotide encoding the same are provided.
- the protein of the present invention and a polynucleotide encoding the same are useful as a medicament for treating or preventing Alzheimer's disease and other diseases, and for diagnosing these diseases.
- the present invention also makes it possible to screen compounds that inhibit or promote amyloid; 3 protein aggregation.
- the screening of the present invention is expected to develop an effective Alzheimer's therapeutic agent that suppresses amyloid 3 aggregation.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/030,269 US6960435B1 (en) | 1999-07-08 | 2000-07-06 | Amyloid β protein agglutination-controlling factor |
AU58494/00A AU5849400A (en) | 1999-07-08 | 2000-07-06 | Amyloid beta protein agglutination controlling factor |
EP00944307A EP1203816A4 (en) | 1999-07-08 | 2000-07-06 | FACTOR REGULATING AGGLUTINATION OF BETA-AMYLOID PROTEIN |
US11/013,400 US7029860B2 (en) | 1999-07-08 | 2004-12-17 | Amyloid-β protein aggregation-regulating factors |
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JP2003503010A (ja) | 1999-03-24 | 2003-01-28 | ヒューマン ジノーム サイエンシーズ, インコーポレイテッド | アポトーシス関連遺伝子 |
JP2004507225A (ja) * | 2000-06-01 | 2004-03-11 | インサイト・ゲノミックス・インコーポレイテッド | アポトーシス調節因子 |
US6797393B2 (en) | 2001-11-30 | 2004-09-28 | Eastman Kodak Company | Method for making biochip substrate |
JP3877653B2 (ja) * | 2001-12-20 | 2007-02-07 | 森永乳業株式会社 | 癌の診断に有用な新規遺伝子及びその用途 |
US20040001848A1 (en) * | 2002-03-01 | 2004-01-01 | Szu-Yi Chou | Method of producing disease-specific antigens |
AU2004243569A1 (en) * | 2003-05-27 | 2004-12-09 | Laboratoires Serono Sa | Novel IL-8-like polypeptides |
JP2009521666A (ja) | 2005-10-12 | 2009-06-04 | アラーガン、インコーポレイテッド | 共鳴エネルギー移動後の偏光解消(daret)を用いる分子または細胞より小さい部分の相互作用力のアッセイ |
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EP1067182A3 (en) * | 1999-07-08 | 2001-11-21 | Helix Research Institute | Secretory protein or membrane protein |
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2000
- 2000-07-06 WO PCT/JP2000/004515 patent/WO2001004299A1/ja not_active Application Discontinuation
- 2000-07-06 WO PCT/JP2000/004514 patent/WO2001004312A1/ja not_active Application Discontinuation
- 2000-07-06 EP EP00944308A patent/EP1201754A4/en not_active Withdrawn
- 2000-07-06 AU AU58493/00A patent/AU5849300A/en not_active Abandoned
- 2000-07-06 EP EP00944307A patent/EP1203816A4/en not_active Withdrawn
- 2000-07-06 AU AU58494/00A patent/AU5849400A/en not_active Abandoned
- 2000-07-06 EP EP00944306A patent/EP1197554A4/en not_active Withdrawn
- 2000-07-06 WO PCT/JP2000/004516 patent/WO2001004300A1/ja not_active Application Discontinuation
- 2000-07-06 CA CA002378485A patent/CA2378485A1/en not_active Abandoned
- 2000-07-06 AU AU58495/00A patent/AU5849500A/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
WO2001004300A1 (fr) | 2001-01-18 |
EP1197554A1 (en) | 2002-04-17 |
WO2001004312A1 (fr) | 2001-01-18 |
EP1203816A1 (en) | 2002-05-08 |
EP1201754A4 (en) | 2005-02-09 |
AU5849400A (en) | 2001-01-30 |
EP1197554A4 (en) | 2005-02-09 |
CA2378485A1 (en) | 2001-01-18 |
US7029860B2 (en) | 2006-04-18 |
AU5849300A (en) | 2001-01-30 |
AU5849500A (en) | 2001-01-30 |
US20050214813A1 (en) | 2005-09-29 |
EP1201754A1 (en) | 2002-05-02 |
EP1203816A4 (en) | 2004-12-08 |
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