WO2002051998A1 - Nouvelle protease - Google Patents
Nouvelle protease Download PDFInfo
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- WO2002051998A1 WO2002051998A1 PCT/JP2001/011251 JP0111251W WO02051998A1 WO 2002051998 A1 WO2002051998 A1 WO 2002051998A1 JP 0111251 W JP0111251 W JP 0111251W WO 02051998 A1 WO02051998 A1 WO 02051998A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/34—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving hydrolase
- C12Q1/37—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving hydrolase involving peptidase or proteinase
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/40—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against enzymes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
- C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
- C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
- C12N9/64—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
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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
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/573—Immunoassay; Biospecific binding assay; Materials therefor for enzymes or isoenzymes
Definitions
- the present invention relates to a novel protease. '' Background technology
- AD AMTS AD isintegrin and metalloprotease with thromb ospondin mo tif
- TSP-1 repeat a thrombospondin type I repeat
- the extracellular matrix aggrecan has a glutamic acid residue at position 373 and an alanine residue at position 374. It has been shown to selectively cleave between the base (GI u 373 and AI a 374 ), and may be the main enzyme in the degradation of the extracellular matrix aggrecan in arthritis and osteoarthritis. (Tortorella MD et al., Science, 284, 1664-1666, 1999; and Abbaszade I. et al., J. Biol. Chem., 274, 23443-23450, 1999). . ADAMTS 2
- Procollagen IN-proteinase is an enzyme that cleaves and removes the N-terminal part of type I collagen pro-form, is involved in the conversion of type I collagen from pro-form to mature form, and plays an important role in the formation of collagen fibers. It has been shown that the abnormality of the gene is associated with the Ehlers-Danlos syndrome VII type C (CoI ige A. et al., Am. J. Hum. Genet., 65, 308-31 7, 1 999).
- ADAMTS molecules are involved in metabolism such as degradation and maturation of extracellular matrix such as aggrecan and collagen.
- chronic renal failure is a disease characterized by glomerular sclerosis and renal interstitial fibrosis, and qualitative changes and / or increases in the amount of extracellular matrix components are regarded as major pathogenesis and progress mechanisms.
- TGF- ⁇ transforming growth factor
- Anti-TGF— S administration
- TGF- ⁇ is a differentiation and growth factor with a wide variety of physiological functions
- inhibiting all of the physiological functions of TGF- ⁇ may have side effects in the treatment of chronic renal failure where long-term administration is expected. Dangerous from a point of view. It is desirable to suppress or inhibit only the part of the physiological action of TGF-yS involved in the qualitative change and increase in the amount of extracellular matrix components. .
- An object of the present invention is to provide a novel protease which is induced by TGF-y8 and is involved in extracellular matrix metabolism, which is useful as a screening tool for a therapeutic agent for chronic renal failure, and a novel polynucleotide encoding the same.
- the present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, from human fetal kidney cDNA, amino acids 1 to 1224 in the sequence represented by SEQ ID NO: 2 And a polynucleotide encoding a novel protease consisting of 1224 amino acid residues.
- the present inventor has found that the N-terminal partial fragment consisting of 750 amino acid residues of this novel protease also has a sufficient protease activity.
- the protease comprises: (1) A DAM Being classified as a protease, it is considered to be a protease involved in the metabolism of extracellular matrix. (2) In fact, its expression in human kidney is observed. (3) Kidney In primary culture cells, the expression was induced by TGF-; 8, and (4) the gene expression level was increased in renal failure model animals.
- the protease of the present invention is a polypeptide that causes renal failure.
- TGF- ⁇ By using the polypeptide of the present invention to screen for a substance that inhibits its protease activity, TGF- ⁇ It is clear that it is possible to screen for a substance useful as a therapeutic agent for chronic renal failure that suppresses or inhibits only the part of the physiological action involved in qualitative changes and quantitative increase of extracellular matrix components. The present invention has been completed.
- [1] (1) a sequence consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2; (2) a sequence consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2 In the sequence consisting of the amino acid No. 1, 10 to 10 amino acids have been deleted, substituted, modified or inserted, or (3) the amino acid sequence represented by SEQ ID NO: 2 A polypeptide comprising an amino acid sequence in which 1 to 10 amino acids have been deleted, substituted, and / or inserted in the sequence consisting of the 1224th amino acid, and further exhibiting protease activity;
- polypeptide comprising a sequence consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2 and further exhibiting protease activity;
- [5] (1) homology to the sequence consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2, or (2) the homology to the amino acid sequence represented by SEQ ID NO: 2
- a polypeptide comprising an amino acid sequence having a homology of 90% or more with a sequence consisting of the 1st to 1224th amino acids and exhibiting protease activity;
- a method for producing a pharmaceutical composition for treating chronic renal failure comprising:
- protease inhibitory protein As used herein, the term “protease activity” refers to a complex which is not dissociated by sodium dodecyl sulfate (SDS) and Z or a reducing agent with 2- macroglobulin, a protease inhibitory protein present in serum. Means properties. BEST MODE FOR CARRYING OUT THE INVENTION
- polypeptide comprising a sequence consisting of amino acids 1 to 50 in the amino acid sequence represented by SEQ ID NO: 2;
- homologous polypeptide A polypeptide comprising an amino acid sequence having a homology of 90% or more with a sequence consisting of amino acids of the first to second incense and exhibiting protease activity (hereinafter referred to as homologous polypeptide)
- polypeptide of the present invention "a polypeptide comprising a sequence consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2" is an amino acid sequence represented by SEQ ID NO: 2
- the polypeptide is not particularly limited as long as it contains a sequence consisting of amino acids Nos. 1 to 50 and has a protease activity.
- a method for determining whether or not a certain polypeptide (hereinafter, referred to as a test polypeptide) exhibits “protease activity” (hereinafter, may be referred to as a “method for determining protease activity”) is as follows.
- the test polypeptide is brought into contact with 2— macroglobulin, a protease inhibitory protein present in serum, and SDS and / or a reducing agent [eg, 2— It can be confirmed by analyzing whether or not a complex that does not dissociate with mercaptoethanol (2-ME)] is formed. Can be confirmed, for example, by the method described in Example 4.
- ⁇ 2 -macroglobulin is a protease inhibitory protein present in serum and is known to form a complex with many proteases. This complex Formation is dependent on the protease activity, and the complex formed is an amide bond between protease and 2- macroglobulin, so that SDS or reducing agent (eg, 2- ME) does not dissociate (Feinm an RD et al., Ann. New York Ac Ad. Sci., 737, 245-266, 19994; and Kuno K. et al. J. Bio, Chem., 274, 1882-188826, 1999).
- SDS or reducing agent eg, 2- ME
- the polypeptide (1a) that is, the “polypeptide consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2” has 750 amino acid residues exhibiting protease activity.
- a novel protease consisting of The polypeptide (1a) corresponds to a partial polypeptide of “a polypeptide consisting of the 1st to 1224th amino acids in the amino acid sequence represented by SEQ ID NO: 2”.
- the marker sequence in the polypeptide of the present invention for example, a sequence for easily confirming expression of the polypeptide, confirming intracellular localization, or purifying can be used.
- a sequence for easily confirming expression of the polypeptide, confirming intracellular localization, or purifying can be used.
- Examples include a LAG tag, a hex-histidine 'tag, a hemagglutinin' tag, or mycep I.
- the functional equivalent variant of the present invention has 1 to 10 amino acids, preferably 1 to 10 amino acids at one or a plurality of positions in the amino acid sequence represented by SEQ ID NO: 2, which comprises amino acids 1 to 50. 1 to 7, more preferably 1 to 5 (for example, 1 to several) amino acids contain an amino acid sequence in which deletion, substitution, and / or insertion has been performed, and exhibit protease activity It is not particularly limited as long as it is a polypeptide, and its origin is not limited to human.
- mutant J includes not only a mutant in the human of a polypeptide consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2, but also a non-human organism (eg, mouse, rat , Hamsters, or dogs). Furthermore, based on the polynucleotide encoding those natural polypeptides (ie, variants derived from humans or functionally equivalent variants derived from non-human organisms), or represented by SEQ ID NO: 2 That encodes a polypeptide consisting of amino acids Nos. 1 to 750 in the amino acid sequence Polypeptides produced using polynucleotides artificially modified by genetic engineering based on leotide are included. In this specification, “mutant J
- variable means an individual difference in the same polypeptide in the same species, or a difference in the homologous polypeptide between several species.
- Mutants in humans of the polypeptide consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2 or functionally equivalent variants derived from organisms other than human can be obtained by those skilled in the art.
- the nucleotide sequence of a polynucleotide encoding the polypeptide consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2 for example, the nucleotide sequence represented by SEQ ID NO: 1 (Array) information.
- the genetic recombination technique is a known method (for example, Sambrook, J. et al., "Molecular Cloning—AL aboratory Manual, Cold Spring Laboratories, NY, 1 989).
- an appropriate primer or probe is designed based on information on the nucleotide sequence of a polynucleotide encoding a polypeptide consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2,
- a primer for example, total RNA or mRNA fraction, c
- a mammal eg, human, mouse, rat, hamster, or dog
- PCR Polymerase chain reaction
- a polynucleotide encoding a polypeptide is obtained, and the polynucleotide is expressed using an appropriate expression system.
- a desired polypeptide can be obtained by confirming that it exhibits protease activity by the method described in Example 4.
- the above-mentioned polypeptide which has been artificially modified by genetic engineering can be obtained by a conventional method, for example, site-specific mu tagenesis (Mark, DF et al., Proc. Natl. Ac). a d. Sc in USA, 81, 5662-5666, 19984), a polynucleotide encoding the polypeptide is obtained, and the polynucleotide is expressed using an appropriate expression system.
- the expressed polypeptide is, for example, as described in Example 4.
- the desired polypeptide can be obtained by confirming the protease activity by the method.
- An amino acid sequence to which a deleted sequence has been added which has an amino acid sequence to which an appropriate marker sequence or the like has been further added at the N-terminus and / or C-terminus thereof, and which further exhibits a protease activity. And so on.
- the homologous polypeptide of the present invention has a homology with the sequence consisting of amino acids 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2, or the first amino acid in the amino acid sequence represented by SEQ ID NO: 2.
- the amino acid sequence is not particularly limited as long as it contains an amino acid sequence having a homology of 90% or more with the sequence consisting of the amino acids Nos. 1 to 1224 and exhibits protease activity. With respect to the sequence consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2 or the sequence consisting of amino acids Nos. 1 to 1224 in the amino acid sequence represented by SEQ ID NO: 2.
- homology to the sequence consisting of amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2, or the amino acid sequence represented by SEQ ID NO: 2 An amino acid sequence having a homology of 90% or more (more preferably 95% or more, still more preferably 98% or more, particularly preferably 99% or more) with a sequence consisting of the amino acids Nos. 1 to 1224;
- a polypeptide exhibiting protease activity is more preferable.
- BLAST Basic Ioca I aI ingmentsearchtoo I; Altscnul, SF et al., J. Mo, Biol., 2 15, 403-411). 0, 1990
- BLAST search algorithm Specifically, the bI 2 seq program (Tatiana A. Tatusova and Thomas L.) of the BLAST package (sgi 32-bit version, version 2.0.12; obtained from NCBI) is available. M adden, F EMS Microbiol. Lett., 174, 27-250, 1999) and can be calculated according to default parameters.
- a polypeptide consisting of amino acids 1 to 75 in the amino acid sequence represented by SEQ ID NO: 2 Peptide "" a polypeptide J consisting of the 1st to 122nd amino acids in the amino acid sequence represented by SEQ ID NO: 2; "1st to 75th amino acid sequence in the amino acid sequence represented by SEQ ID NO: 2"
- a total of 1 to 10 preferably 1 to 7, more preferably 1 to 5 amino acids are deleted, substituted, inserted, And / or a polypeptide J exhibiting protease activity, or ⁇ consisting of amino acids 1 to 1224 in the amino acid sequence represented by SEQ ID NO: 2.
- One or more positions in the sequence comprises an amino acid sequence in which 1 to 10 (preferably 1 to 10, more preferably 1 to 5) amino acids are deleted, substituted, inserted, and / or added as a whole, and Polypeptide J exhibiting an activity of zeolites is preferable, "a polypeptide comprising amino acids Nos. 1 to 750 in the amino acid sequence represented by SEQ ID NO: 2", or A polypeptide comprising amino acids Nos. 1 to 1224 in the amino acid sequence "is more preferable.
- the polynucleotide of the present invention is not particularly limited as long as it is a polynucleotide encoding the polypeptide of the present invention.
- the first to second nucleotides in the base sequence represented by SEQ ID NO: 1 Polynucleotides containing a sequence consisting of 250 incense bases may be mentioned. Particularly preferred are polynucleotides consisting of the first to second 250 incense bases in the base sequence represented by SEQ ID NO: 1.
- the term “polynucleotide” in the present specification includes both DNA and RNA.
- the method for producing the polynucleotide of the present invention is not particularly limited.
- Examples of the method include (1) a method using PCR, and (2) a conventional genetic engineering method (that is, a method using a cDNA library). (A method of selecting a transformed strain containing the desired cDNA from the transformed transformant) or (3) a chemical synthesis method.
- a method using PCR a method using a cDNA library
- a conventional genetic engineering method that is, a method using a cDNA library
- a chemical synthesis method a method using a method using a cDNA library.
- mRNA is extracted from human cells or tissues capable of producing the polypeptide of the present invention.
- a set of two primers each capable of sandwiching the entire length of mRNA corresponding to the polypeptide of the present invention, Create a pair of primer sets that can sandwich the mRNA region.
- RT-PCR reverse transcriptase-polymerase chain reaction
- total RNA including mRNA encoding the polypeptide of the present invention is extracted from cells or tissues capable of producing the polypeptide of the present invention by a known method.
- the extraction method include the guanidine 'thiosinate, hot' phenol method, the guanidine 'thiosinate-guanidine-hydrochloric acid method, and the guanidine-thiosinate cesium chloride method. Preferably, it is used.
- Cells or tissues capable of producing the polypeptide of the present invention include, for example, a Northern blotting method using a polynucleotide encoding the polypeptide of the present invention or a part thereof, or a polypeptide or a polynucleotide of the present invention. It can be identified by Western blotting using an antibody specific for the peptide.
- mRNA is purified.
- Purification of mRNA can be performed according to a conventional method. For example, mRNA can be purified by adsorbing it to an oligo (dT) cellulose column and then eluted. If desired, mRNA can be further fractionated by sucrose density gradient centrifugation or the like. Also, without extracting mRNA, commercially available extracted and purified mRNA can also be used.
- the purified mRNA is subjected to a reverse transcriptase reaction in the presence of, for example, a random primer, an oligo dT primer, and a primer synthesized in a random or custom manner to synthesize a first-strand cDNA.
- This synthesis can be performed by a conventional method.
- Using the obtained first-strand cDNA perform PCR using two types of primers sandwiching the full-length or partial region of the target polynucleotide, and obtain the target cDNA.
- the obtained DNA is fractionated by agarose gel electrophoresis or the like. If desired, the DNA can be obtained by cutting the DNA with a restriction enzyme or the like and connecting the DNA.
- the polynucleotide of the present invention can be produced, for example, by the following procedure.
- a single-stranded cDNA was synthesized using a reverse transcriptase, and then a double-stranded cDNA was synthesized from the single-stranded cDNA.
- the method include the S1 nuclease method (E f S tratiadis, A. et al., Cell, 7, 279-288, 1976), the L and method (Land, H. et al., Nucleic Acids Res., 9, 2251 -2266, 1981), 0. Joon Yoo method (Yoo, OJ et al., Proc. Natl. Ac ad.
- the recombinant plasmid is introduced into Escherichia coli (for example, DH5 strain, HB101 strain, or JM109 strain) and transformed. Recombinants are selected based on drug resistance to tetracycline, ampicillin, or kanamycin.
- Methods for selecting a transformant having the desired cDNA from the thus obtained transformants include, for example, the following (i) a transformant screening method using a synthetic oligonucleotide probe; U) a method for screening a transformant using a probe prepared by PCR, (iii) a method for screening a transformant using an antibody against the polypeptide of the present invention, or (iv) a selective 'high' A transformant screening method using a bridging solution / translation system can be employed.
- a transformant having the target cDNA can be selected by the following procedure.
- an oligonucleotide corresponding to all or a part of the polypeptide of the present invention was synthesized, and this was used as a probe (labeled with 32 or 33 ) to obtain a nitrocellulose filter denatured and immobilized with the DNA of the transformant. Alternatively, it is hybridized with a polyamide filter, and the obtained positive strain is searched and selected.
- a probe oligonucleotide a nucleotide sequence derived from codon usage can be used, or a plurality of nucleotide sequences obtained by combining possible nucleotide sequences can be used. Can also. In the latter case, the type can be reduced by including inosine.
- a transformant having the desired cDNA can be selected by the following procedure.
- oligonucleotides of a sense primer and an antisense primer corresponding to a part of the polypeptide of the present invention are synthesized, and PCR is performed by combining these primers to encode all or part of the target polypeptide.
- the DNA fragment to be amplified As the type I DNA used herein, cDNA synthesized by reverse transcription reaction from mRNA of a cell producing the polypeptide of the present invention or genomic DNA can be used.
- the DNA fragment prepared in this manner is labeled with, for example, 32 P or 33 P, and colony hybridization or plaque hybridization is performed using the labeled DNA as a probe to obtain the desired cDNA.
- a transformant having the desired cDNA can be selected, for example, by the following procedure.
- the cDNA was previously integrated into the expression vector, and the culture supernatant of the transformed strain,
- the polypeptide is produced intracellularly or on the cell surface, and a desired polypeptide-producing strain is detected using an antibody against the polypeptide of the present invention and a secondary antibody against the antibody, to obtain the desired cDNA.
- a transformant having the strain is selected.
- a transformant having the desired cDNA can be selected by the following procedure.
- cDNA obtained from the transformed strain was plotted on a nitrocellulose filter or the like, and mRNA separately prepared from cells capable of producing the polypeptide of the present invention was hybridized and then bound to the cDNA. Dissociate and recover mRNA.
- the recovered mRNA is injected into an appropriate polypeptide translation system, for example, an oocyte of an African frog, or translated into a polypeptide using a cell-free system such as a heron reticulocyte lysate or wheat germ. .
- a transformant having the desired cDNA is selected by detection using an antibody against the polypeptide of the present invention.
- a method for collecting the polynucleotide of the present invention from the obtained transformant of interest can be obtained by a known method (for example, Sambrook, J. et al., "Molecular CI on ng—A Laboratory Manual, Col. Spring Harbor Laboratory, Y, 1989) For example, separating a fraction corresponding to plasmid DNA from cells and cutting out the cDNA region from the obtained plasmid DNA. Can be performed by
- the polynucleotide of the present invention can be produced by binding the DNA fragment produced by the chemical synthesis method.
- Each DNA is synthesized using a DNA synthesizer [for example, Oligo 100 OM DN AS ynthesizer (manufactured by Beckman) or 394 DNA ZRNA Synthesizer (manufactured by App Ied Biosystems)] can do.
- the polynucleotide of the present invention can be prepared, for example, by the phosphite triester method (Hunkap IIer, M. et al., N. ature.10, 105-111, 1984), etc., and can also be produced by chemical synthesis of nucleic acids.
- the codon for the desired amino acid is known per se and may be arbitrarily selected. For example, it can be determined according to a conventional method in consideration of the frequency of codon usage of the host to be used (Cranth am, R Et al., Nucleic Acids Res., 9, r 43—r 74, 198 1).
- partial modification of the codons of these nucleotide sequences can be performed by a conventional method using site-directed mutagenesis using a primer consisting of a synthetic oligonucleotide encoding the desired modification) or (site-specific mu tagenesis) ( Sc. Natl. Acad. Sc, Mark, D. F. et al., USA, 81, 5662-5666, 19984).
- the sequencing of DNA obtained by the various methods described so far can be performed, for example, by the chemical modification method of Maxam-Gilbert (MaXam, AM and Gibert, W., "Methodsin Enzymo Iogy”). , 65, 499-555, 1980) and dideoxynucleotide chain termination methods (Messing, J. and Vieira, J., Gene, 19, 269-276, 1982). You can do it.
- “3.Expression vector and cell of the present invention-Eukaryotic or prokaryotic host cells can be transfected by re-incorporating the isolated polynucleotide of the present invention into an appropriate vector DMA.
- the polynucleotide can be expressed in each host cell.
- the expression vector of the present invention is not particularly limited as long as it contains the polynucleotide of the present invention.
- the polynucleotide of the present invention may be added to a known expression vector appropriately selected according to the host cell to be used. And an expression vector obtained by insertion.
- the cell of the present invention is not particularly limited as long as it is transfected with the expression vector of the present invention and contains the polynucleotide of the present invention.
- a cell integrated into the chromosome of a cell Alternatively, it can be a cell containing the polynucleotide according to the present invention in the form of an expression vector.
- the cells can be cells expressing the polypeptide of the present invention, or cells not expressing the polypeptide of the present invention.
- the cell of the present invention can be obtained, for example, by transfection of a desired host cell with the expression vector of the present invention.
- a vertebrate cell expression vector those having a promoter, an RNA splice site, a polyadenylation site, a transcription termination sequence, etc., which are usually located upstream of the gene to be expressed, can be used. Furthermore, if necessary, a replication origin can be provided.
- the expression vector include, for example, PSV 2 dhfr having an early promoter of SV40 (Subramani, S. et al., Mo to Ce I to Biol., 1, 854-864, 19981), PEF-BOS (Mizushima, S. and Nagata, S., Nucleic Acids Res., 18, 5,322, 1990) having a human elongation factor promoter, or cytomegalovirus promoter P CEP 4 (Invitrogen) and the like.
- p CEP4 Invitrogen
- S One having a V40 origin of replication, capable of autonomous growth in COS cells, and having a transcription promoter, a transcription termination signal, and an RNA splice site can be used.
- pME18S Ma ruy ama, K. and Takebe, Y., Med.Immuno I., 20, 27-32, 1990
- p EF—BOS Mizushima, S. and Nagata, S., N
- pCDM8 Seed, B., Nature, 329, 840-842, 1987).
- the expression vector is prepared, for example, by the DEA E-dextran method (Lutman, H. and Magnusson,-, Nucleic Acids Res., 11, 1295-1308, 1983). , Calcium phosphate-DNA coprecipitation method
- a vector capable of expressing a neo gene functioning as a G418 resistance marker together with an expression vector containing a polynucleotide encoding the polypeptide of the present invention for example, p RS V neo (Sammbook, J. Ri, olecular Cloning — AL aboratory M tract ", Old Spring Harbor Laboratory, NY, 1 989) or p SV2—neo (S outhern, PJ and Berg, P., J. Mo, and App I. Gnet., 1, 327-341, 19882) were transfected, and G418 resistant colonies were selected. Transfected cells that stably produce the polypeptides of the invention can be obtained.
- the cells of the present invention can be cultured according to a conventional method (for example, edited by The Biochemical Society of Japan, “New Cell Chemistry Experiment Course 18 Cell Culture Technology”, Tokyo Kagaku Dojin, 1990). By culturing, the polypeptide of the present invention is produced extracellularly.
- a medium that can be used for the culture various types of commonly used media can be appropriately selected depending on the host cell used. For example, in the case of COS cells, for example, a medium such as RPMI-1640 medium or Dulbecco's modified Eagle's minimum essential medium (DMEM) to which serum components such as fetal bovine serum (FBS) are added as necessary. Can be used.
- DMEM Dulbecco's modified Eagle's minimum essential medium
- DMEM Dulbecco's Modified Eagle's Minimum Essential Medium
- FBS fetal bovine serum
- the polypeptide of the present invention which is produced extracellularly by culturing the cell of the present invention, comprises various known separations utilizing the physical properties, biochemical properties, and the like of the polypeptide. Separation and purification can be performed by an operation method (for example, edited by Masato Okada and Kaoru Miyazaki, "Revised Protein Experiment Note: Up and Down", Yodosha, 1999). Specifically, a culture solution containing the polypeptide of the present invention may be treated with, for example, a normal protein precipitant, ultrafiltration, various liquid chromatography [eg, molecular sieve chromatography (gel filtration), adsorption chromatography, and the like. Chromatography, ion-exchange chromatography, affinity chromatography, high-performance liquid chromatography (HP LC), etc.], or dialysis, or a combination thereof, to purify the polypeptide of the present invention. Can be.
- a normal protein precipitant for example, ultrafiltration, various liquid chromat
- the expression of the polypeptide of the present invention can be easily confirmed or purified by expressing the polypeptide of the present invention by fusing it in-frame with the marker sequence.
- the marker sequence include an F-tag and an AG tag, a hexahistidine 'tag, a hemagglutinin' tag, and a myctopine.
- a protease for example, enzymatic kinase, factor Xa, or thrombin
- polypeptide of the present invention makes it possible to detect whether or not a test compound inhibits the protease activity of the polypeptide of the present invention.
- the present invention By using the detection method, a substance that inhibits the protease activity of the polypeptide of the present invention can be screened.
- MDT S 9 which is the polypeptide of the present invention
- the test compound that can be subjected to the detection method or screening method of the present invention is not particularly limited.
- various known compounds including peptides registered in a chemical file, combinatorial compounds, and the like can be used.
- a group of compounds obtained by the chemistry method (T errett, NK et al., Tetrahedron, 51, 8135-1813F, 1995) or a conventional synthesis technique, or a phage display method (Felici F. et al., J. Mo, and Bio, 222, 301-310, 19991) can be used.
- the known compounds are known to have, for example, a protease inhibitory activity.
- test polypeptide and Fei 2 - Li instead contacting the macroglobulin, polypeptides and alpha 2 of the present invention - except contacting a macro Gros purine with a test compound, of the aforementioned It can be carried out in the same manner as in the method for determining the protease activity.
- the polypeptide of the present invention in the detection method of the present invention, the polypeptide of the present invention, the polypeptide for a substrate, and a test compound are brought into contact with each other, and in the presence of the test compound, the polypeptide of the present invention and ⁇ 2 -macroglobulin
- a reducing agent for example, 2-ME
- the polypeptide of the present invention and 2- macroglobulin do not form a complex that does not dissociate with SDS and / or a reducing agent (eg, 2-ME), or the extent of the formation
- a reducing agent eg, 2-ME
- polypeptides and 2 of the present invention - contacting the macro Gros purine with a test compound, Poribe peptide and 2 of the present invention in the presence of the test compound - formation of a complex between the macro Gros purine
- the substance that inhibits the protease activity of the polypeptide of the present invention or the substance for treating chronic renal failure can be selected using the presence or absence or the degree of the index as an index.
- the polypeptide of the present invention and 2- macroglobulin will not form a complex that does not dissociate with SDS and / or a reducing agent (eg, 2-ME), or If it decreases, the test compound
- the substance can be determined to be a substance that inhibits the protease activity of the polypeptide described above or a substance for treating chronic renal failure.
- the detection method of the present invention includes a step of detecting whether or not the protease activity of the polypeptide of the present invention is inhibited, and a step of formulating the same.
- the present invention also includes a method for producing a pharmaceutical composition for treating chronic renal failure.
- the present invention includes a method for producing a pharmaceutical composition for treating chronic renal failure, which comprises formulating a substance obtained by the screening method of the present invention including the detection step.
- the preparation containing a substance that inhibits the protease activity of the polypeptide of the present invention as an active ingredient may be, depending on the type of the active ingredient, a carrier, an excipient, and / or other additives usually used for the formulation thereof. It can be prepared using an agent.
- Administration may be, for example, oral administration of tablets, pills, capsules, granules, fine granules, powders, or oral solutions, or injections such as intravenous injection or intramuscular injection, suppositories, transdermal Parenteral administration using an agent for administration or an agent for transmucosal administration can be mentioned.
- parenteral administration using an agent for administration or an agent for transmucosal administration
- pharmaceutical preparations that do not undergo parenteral administration such as intravenous injection or digestion, for example, the pharmaceutical preparations described in WO 9528896 pamphlet are preferable. .
- compositions for oral administration one or more active substances and at least one inert diluent such as lactose, mannitol, glucose, microcrystalline cellulose, hydroxypropylcellulose, starch, polyvinyl It can be mixed with pyrrolidone or magnesium aluminate metasilicate.
- the composition may contain additives other than an inert diluent, for example, a lubricant, a disintegrant, a stabilizer, or a solubilizing or solubilizing agent, according to a conventional method. Tablets and pills may be coated, if necessary, with a sugar-coated or gastric or enteric coated film.
- Liquid compositions for oral use can include, for example, emulsions, solutions, suspensions, syrups, or elixirs; commonly used inert diluents, such as purified water Or it may include ethanol.
- the composition can contain additives other than inert diluents, for example, wetting agents, suspending agents, sweetening agents, fragrances, or preservatives.
- Parenteral injections may include sterile aqueous or non-aqueous solutions, suspensions, or emulsions.
- the aqueous solution or suspension may contain, for example, distilled water for injection or physiological saline as a diluent.
- a diluent for a water-insoluble solution or suspension for example, propylene glycol, polyethylene glycol, vegetable oil (eg, olive oil), alcohols (eg, ethanol), polysorbate 80, etc. Can be.
- the composition may further include a wetting agent, an emulsifying agent, a dispersing agent, a stabilizer, a solubilizing or solubilizing agent, or a preservative.
- the composition can be sterilized by, for example, filtration through a bacteria-retaining filter, blending of a bactericide, or irradiation.
- a sterile solid composition can be produced and dissolved in sterile water or another sterile injectable medium before use.
- the dose can be appropriately determined in consideration of the activity intensity, symptom, age, sex, etc. of the active ingredient selected by the screening method.
- the dose is usually about 0.01 to 100 mg / day, preferably 0.01 to 100 mg / day for an adult (as a body weight of 60 kg).
- the dosage is 0.01 to 100 mg / day, preferably 0.01 to 100 mg / day in the form of injection.
- An antibody that reacts with the polypeptide of the present invention (for example, a polyclonal antibody or a monoclonal antibody) can be obtained by directly administering the polypeptide of the present invention or a fragment thereof to various animals. Further, using a plasmid into which a polynucleotide encoding the polypeptide of the present invention has been introduced, the DNA vaccine method (Raz, E. et al., Proc. Natl. Acad. , 951 9-952 3, 1994; or Donne IIy, JJ et al., J. Infect. Dis., 173, 314-320, 1996).
- the polyclonal antibody was sensitized, for example, by immunizing an emulsion obtained by emulsifying the polypeptide of the present invention or a fragment thereof in an appropriate adjuvant (for example, Freund's complete adjuvant) in the abdominal cavity, subcutaneous region, or vein. It can be produced from serum or eggs of animals (eg, egrets, rats, goats, or chickens).
- a polyclonal antibody can be separated and purified from the serum or eggs thus produced by a conventional polypeptide isolation and purification method. Examples of such separation and purification methods include centrifugal separation, dialysis, salting out with ammonium sulfate, and chromatographic method with DEAE-cellulose, hydroxyapatite, or protein A agarose. it can.
- Monoclonal antibodies can be readily prepared by those skilled in the art by, for example, the cell fusion method of Koehler and Milstein (Koh Ier, G. and M I Istein, C., Nature, 256, 495-497, 1975). It is possible to manufacture.
- an instillation of the polypeptide of the present invention or a fragment thereof in an appropriate adjuvant is repeatedly inoculated into the mouse intraperitoneally, subcutaneously, or vein several times every several weeks.
- an appropriate adjuvant for example, Freund's complete adjuvant
- spleen cells are removed and fused with myeloma cells to produce hybridomas.
- myeloma cells for obtaining hybridomas include myeloma cells having a marker such as hypoxanthine-guanine-phosphoribosyltransferase deficiency or thymidine kinase deficiency (for example, mouse myeloma cell line P 3X63Ag 8.U 1).
- fusion agent for example, polyethylene glycol can be used.
- a medium for producing hybridomas for example, 10-30% of a commonly used medium such as Eagle's minimum essential medium, Dulbecco's modified minimum essential medium, or RPMI-1640 is used. Maggot fetal serum can be used as appropriate. Fusion strains can be selected by the HAT selection method. The screening of hybridomas can be performed by using well-known methods such as ELISA or immunohistochemical staining using the culture supernatant to select clones of hybridomas secreting the desired antibody. You. In addition, by repeating subcloning by the limiting dilution method, the monoclonality of the hybridoma can be guaranteed.
- the hybridoma obtained in this way can be purified by culturing it in the medium for 2 to 4 days or in the abdominal cavity of BALB BZc mice pretreated with pristane for 10 to 20 days. An amount of antibody can be produced.
- the monoclonal antibody thus produced can be separated and purified from the culture supernatant or ascites by a conventional method for isolating and purifying the polypeptide.
- separation and purification methods include centrifugation, dialysis, salting out with ammonium sulfate, and chromatographic method with DEAE-cellulose, hydroxyapatite, or protein A agarose. .
- the antibody fragment containing the monoclonal antibody or a part thereof may be obtained by incorporating all or a part of the gene encoding the monoclonal antibody into an expression vector, and using a suitable host cell (for example, Escherichia coli, yeast, or animal cell). It can also be introduced and produced.
- a suitable host cell for example, Escherichia coli, yeast, or animal cell. It can also be introduced and produced.
- Antibodies (including polyclonal antibodies and monoclonal antibodies) separated and purified as described above are digested with a polypeptide-degrading enzyme (for example, pepsin or papain, etc.) by a conventional method.
- a polypeptide-degrading enzyme for example, pepsin or papain, etc.
- An antibody fragment containing a part of an active antibody, for example, F (ab ') 2 , Fab, Fab', or Fv can be obtained by separation and purification by an isolation and purification method.
- an antibody reactive with the polypeptide of the present invention can be obtained by the method of Kraxon et al. Or the method of Zebede et al. (CI ackson, T. et al., Nature, 352, 624-628, 1991, or Zebedee, S. et al., Proc. Natl. Acad. Sc in USA, 89, 3175-3179, 1992), a single strand (s ⁇ ng Iechain) 'Fv or F It can also be obtained as ab.
- Human antibodies can also be obtained by immunizing transgenic nick mice (Lonberg, N. et al., Nature, 368, 856-859, 1999), in which the mouse antibody gene has been replaced with a human antibody gene. It is possible.
- Plasmid p CEP4 (manufactured by Invitrogen) was digested with restriction enzymes CIaI and NsiI, blunt-ended, and self-ligated to obtain an EBN A1 expression unit derived from Epstein-Barr virus.
- the removed expression vector pCEP4d was prepared.
- the obtained expression vector pCEP4d is digested with restriction enzymes NheI and BamHI, and then extracted by agarose gel.
- the expression vector pCEP4d is obtained by inserting a double-stranded oligonucleotide obtained by annealing the oligonucleotide consisting of the sequence and the oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 4. — Created FL AG.
- the nucleotide sequence confirmed that the obtained expression vector had the target sequence.
- the obtained expression vector P CE P 4 d-FLAG was designated as type III, and a combination of an oligonucleotide consisting of the base sequence represented by SEQ ID NO: 5 and an oligonucleotide consisting of the base sequence represented by SEQ ID NO: 6 PCR was performed using Pyro Best TM DNA polymerase (manufactured by Takara Shuzo Co., Ltd.) as a primer. In the PCR, heat denaturation was first performed at 94 ° C (2 minutes), and then a cycle consisting of 94 ° C (30 seconds), 55 ° C (30 seconds), and 72 ° C (30 seconds) was performed. The elongation reaction was repeated 5 times, and finally an extension reaction was performed at 72 ° (7 minutes).
- the expression vector pCEPdE2-FLAG was prepared by inserting the DNA into 7 Kbp).
- the cloning sites X ba I recognition sequence, N he I recognition sequence, Not I recognition sequence, and Bam HI recognition sequence and FLAG tag are arranged in this order.
- Example 2 Clonin of the full-length ORF gene of the novel protease gene MDTS 9 Oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 7 (a Spe I recognition sequence and a Kozak sequence are added on the 5 'side) Using a combination with an oligonucleotide consisting of the base sequence represented by SEQ ID NO: 8 (with a Not I recognition sequence added to the 5 'side) as a primer, a human fetal kidney cDNA (Marathon-Ready TM PCR was carried out using DNA polymerase (TaKaRa LATaq ⁇ ; Takara Shuzo) with cDNA ; In the above-mentioned PCR, heat denaturation was first performed at 94 ° C (2 minutes), and then a cycle consisting of 98 ° C (10 seconds) and 68 ° C (2 minutes 30 seconds) was repeated 40 times.
- SEQ ID NO: 7 a Spe I recognition sequence and a Kozak
- Plasmid p CEP d E2-MDTS 9 Cys 1-FLAG was constructed by inserting into the Xba I and Not I sites.
- the obtained plasmid pMDT S9 (5S2-2) was digested with the restriction enzymes SpeI and NcoI to generate a S pel-N col DNA fragment A of about 0.2 kbp.
- the approximately 2.0 kbp NcoI-NotI DNA fragment obtained by digesting the obtained plasmid pMDTS9Cys1 with restriction enzymes NcoI and NotI was constructed in Example 1 described above.
- Plasmid pCEP dE2-MDTS9Cys2-FLAG was constructed by insertion into the XbaI and NotI sites of pCEPdE2-FLAG.
- DNA fragment A and the DNA fragment B are inserted into the Spe I and Not I sites of the plasmid p ZErO-2 (Invitrogen, Inc.), whereby the plasmid p ZE r O— MDTS 9Cys2 was constructed.
- a human fetal kidney cDNA (Marathon-Ready TM) PCR was carried out using DNA DNA (Ta Ka Ra LA Taq TM ; Takara Shuzo) with cDNA (Clontech) as type II.
- DNA DNA Ta Ka Ra LA Taq TM ; Takara Shuzo
- cDNA Clontech
- a clone pMDTS 9-3H was obtained by subcloning about 2.11 ⁇ 08 fragment generated by the PCR into plasmid PCR2.1 (Invitrogen).
- the obtained plasmid pMDTS9-3H was cleaved with restriction enzymes SphI and NotI, and a DNA fragment of about 2.1 kbp generated, and the plasmid pCEPdE2- Plasmid p CEP d E 2-MDT is obtained by ligating MDTS 9 Cys 2-F LAG with a DNA fragment of about 9.3 kbp generated by cutting with restriction enzymes SphI and NotI. S9FuII—FLAG was constructed.
- This plasmid p CEP d E2 -MD TS 9 Fu II-FLAG is a new pro
- Thease gene MDTS9 contains a gene consisting of nucleotides 1 to 3672 in the nucleotide sequence represented by SEQ ID NO: 1, and nucleotides 1 to 1224 in the amino acid sequence represented by SEQ ID NO: 2.
- a polypeptide having the amino acid sequence represented by SEQ ID NO: 21 added to the C-terminus of a sequence consisting of the following amino acids can be expressed using animal cells as a host.
- the plasmid p CEP d E2—MDTS 9Cys 2—FLAG obtained above is the base of the first to 2250 incense in the nucleotide sequence represented by SEQ ID NO: 1 of the novel protease gene MDTS 9.
- the amino acid sequence represented by SEQ ID NO: 21 is added to the amino acid sequence represented by SEQ ID NO: 21 at the C-terminal of the amino acid sequence represented by SEQ ID NO: 2 at the C-terminus.
- Peptides can be expressed mainly in animal cells.
- the polypeptide consisting of the amino acid sequence represented by SEQ ID NO: 2 is considered to be A DAMTS protease.
- Example 3 Expression of MPTS 9 short-length protein (MDTS 9 Cv s 2) and MDTS 9 full-length protein (MDTS 9 FuII)
- Plasmid pCEPdE2-MDTS9Cys2-FLAG or plasmid pCEPdE2-MDTS9FuII-FLAG prepared in Example 2 (or as a control, The prepared plasmid p CEP d E2-FLAG was purified using a commercially available transfection reagent (FuGENE TM 6 Transcription Reagent; manufactured by Boehringer 100 Mannheim) in accordance with the attached instructions, and the serum medium [ HEK293 that had been cultured in DMEM (GI BCO—BRL), 10% fetal bovine serum, 100 gZmL penicillin, 100 gZmL streptomycin, and 250 g / mL—G418 (Nacalai Tesque) — Transfected into EBNA cells (Invitrogen).
- DMEM GI BCO—BRL
- 10% fetal bovine serum 100 gZmL penicillin, 100 gZmL streptomycin, and 250 g /
- the cells After the introduction of the plasmid, the cells are cultured for 48 hours (hereinafter referred to as serum culture). Alternatively, after the introduction of the plasmid, the cells are cultured for 16 hours and washed twice with PBS, and then the serum-free medium [DMEM (GIB CO- BRL) ", 100 g / ml penicillin, 100 gZmL streptomycin, 250 gZmL—G418 (manufactured by Nacalai Tesque)] for 32 hours (hereinafter referred to as serum-free culture). .
- serum-free medium DMEM (GIB CO- BRL) ", 100 g / ml penicillin, 100 gZmL streptomycin, 250 gZmL—G418 (manufactured by Nacalai Tesque)
- a culture supernatant was obtained by centrifugation (3000 rpm, 10 minutes) of each culture solution obtained by the serum culture or serum-free culture using a centrifuge (Model 8800; manufactured by Kubota Seisakusho). .
- each cell remaining after removing the culture solution was extracted with an extract [2 Ommo I LH EPES (pH 7.4), 1% triton 100, 1% glycerol, 0.1% ⁇ After treatment with serum albumin (BSA)] for 15 minutes, the cells are detached from the culture plate by pipetting, and the resulting cell suspension is centrifuged (type 8800; manufactured by Kubota Seisakusho).
- BSA serum albumin
- each of the obtained fractions ie, culture supernatant, cell membrane-bound fraction, and cell fraction
- an antibody against the FLAG tag added to the C-terminus mouse anti-FLAG monoclonal antibody. M 2; manufactured by Sigma). That is, each of the above fractions was subjected to electrophoresis using SDSZ1 0% to 20% acrylamide gel (manufactured by Daiichi Kagaku) under reducing conditions using 2-ME, and then subjected to a blotting apparatus.
- PVDF Polyvinylidene difluoride
- a blocking agent (Blockace; manufactured by Dainippon Pharmaceutical Co., Ltd.) was added to the transcribed PVDF membrane, and the mouse anti-F
- the LAG monoclonal antibody M2 was sequentially reacted with horseradish peroxidase-labeled ⁇ heron anti-mouse IgG polyclonal antibody (manufactured by Zymed or Tago).
- Antibody M2 Sigma
- horseradish peroxidase-labeled streptavidin (Amersham Pharmacia Biotech) were reacted sequentially.
- the expression of the target protein was confirmed using a western blotting detection system (ECL Western Blotting Detection System; manufactured by Amersham Pharmacia Biotech) Plasmid p CE Pd E 2—MDTS 9 Cys 2—FLAG was introduced Of proteins detected in each fraction obtained by serum-free culturing of isolated cells (ie, MDTS 9 short-length protein) in SDS-polyacrylamide gel electrophoresis (SDS-PAGE) The apparent molecular mass is about 55 to 65 KDa in the culture supernatant, and about 55 to 65 KDa in the cell membrane-bound fraction. The fraction was 80-95 KDa.
- ECL Western Blotting Detection System Plasmid p CE Pd E 2—MDTS 9 Cys 2—FLAG was introduced Of proteins detected in each fraction obtained by serum-free culturing of isolated cells (ie, MDTS 9 short-length protein) in SDS-polyacrylamide gel electrophoresis (SDS-PAGE)
- SDS-PAGE SDS
- the protein detected in each fraction obtained by serum-free culturing of cells transfected with plasmid pCEP d E2-M DTS9 Fu II-FLAG (that is, MDTS9 full-length protein) is mainly associated with cell membrane binding.
- the apparent molecular mass in the SDS-PAGE was detected in both the fraction and the cell fraction, and was about 130 to 140 KDa.
- a plasmid pZEr0—MDTS9Cys2EZQ containing the gene MDTS9Cys2EZQ in which (glutamic acid) was replaced with GIn (glutamine) was prepared.
- the plasmid pZEr0-MDTS9Cys2 prepared in Example 2 was used as the type III, and the primer set was an oligonucleotide comprising a base sequence represented by SEQ ID NO: 13 and an oligonucleotide.
- An oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 14 was used.
- Plasmid pCEPdE2-MDTS9Cys2E / Q-FLAG was obtained by inserting into the XbaI and NotI sites of plasmid pCEPdE2-FLAG.
- the PVDF membrane was blocked by adding a pro- and diking agent (Block Ace; manufactured by Dainippon Pharmaceutical Co., Ltd.), and then a goat anti- 2- macroglobulin antibody [CEDAR LAN E) Manufactured by Zymed Laboratories, Inc.) and a horseradish peroxidase-labeled rabbit heron anti-goat IgG polyclonal antibody (Zymed Laboratories). After reaction, commercially available Western blotting detection system
- Plasmid p CEPd E2 MDTS 9 Cys 2—Fragment culture supernatant from serum transfected cells with FLAG contains plasmid p CEPd E2—M DTS 9Cys 2 EZQ—FLAG or plasmid p CEP d E2— F A band of about 250 KDa, which was not detected in the culture supernatant of each serum culture derived from cells transfected with LAG, was detected. This result indicates that the MDTS9 short protein (MDTS 9Cys2) formed a complex with 2— macroglobulin, and therefore, the protease activity of the MDTS9 short protein (MDTS9Cys2) was observed. It was confirmed that there was.
- a combination of an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 15 and an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 16 was used as a primer, and the cDNA panel was used as a ⁇ type, DN a polymerase (T a K a Ra LA T aq ⁇ M; manufactured by Takara Shuzo Co., Ltd.) was carried out PCR using. In the PCR described above, heat denaturation was first performed at 94 ° C (2 minutes), followed by 98 ° C (10 seconds). A cycle consisting of 8 ° C (1 minute 30 seconds) was repeated 44 times.
- agarose gel electrophoresis of the reaction solution was performed to detect a DNA fragment of about 1.1 kbp derived from mRNA of MDTS9 gene. As a result, it was found that the mRNA of the MDTS 9 gene was expressed in the kidney.
- a normal human kidney proximal tubule epithelial cell [CI onetics] was spread on a 6-well plate (manufactured by Asahi Techno Glass Co., Ltd.) to a size of 5 x 10 5 cells. For 1 day. After converting to serum-free renal epithelial cell medium and culturing for another day, serum-free kidney was added to a final concentration of 10 ng / mI with TG.F-) S1 (Sigma). The medium was replaced with an epithelial cell medium and cultured for 24 hours. The control group was replaced with a serum-free renal epithelial cell medium to which TGF-1 had not been added, and cultured for 24 hours.
- RNA was prepared using a commercially available total RNA purification reagent (ISOGEN; manufactured by Nippon Gene). The obtained total RNA was reacted at 37 ° C. for 90 minutes using DNase (manufactured by Nippon Gene). 5 g of the total RNA treated with DNase was converted to cDNA using Superscript II First Strand System (for RT-PCR) (GIBCO-BRL).
- the cycle reaction consisting of 5 seconds), 60 ° C (30 seconds) and 72 ° C (60 seconds) was repeated 40 times.
- the cDNA was designated as ⁇
- an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 19, and represented by SEQ ID NO: 20 PCR under the same conditions was performed using a combination with an oligonucleotide consisting of a base sequence as a primer set.
- the TGF-; 91 unstimulated human kidney proximal tubular epithelial cells cDNA prepared in Example 6 (1) above were defined as type III
- the primer set i.e., a combination of an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 17 and an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 18 or represented by SEQ ID NO: 19
- PCR under the same conditions was carried out using a combination of an oligonucleotide having a base sequence and an oligonucleotide having a base sequence represented by SEQ ID NO: 20).
- the expression amount of mRNA of MDTS 9 gene under each condition is expressed as a ratio to the expression amount of ⁇ -actin gene under each condition.
- mRN ⁇ of the MDTS9 gene was induced about 8-fold in gene expression by TGF-81.
- Example 7 Expression fluctuation of MDTS 9 gene in rat renal failure model
- the cDNA was prepared from the kidney of a rat 56 nephrectomy model (Kenichiro Kimura, “Kidney and Dialysis”, 1991 Special Issue, 431-439). After completion of 5Z6 nephrectomy, 56 nephrectomized rats and 5 sham-operated rats were dissected at 1 week, 2 weeks, 3 weeks, 4 weeks, 6 weeks, 8 weeks, and 10 weeks, and the kidneys were dissected. It was excised and immediately frozen and stored at 180 ° C.
- the kidneys of each of these groups were crushed using a cell crusher (Cryopress CP-100; Microtech Nichion) under liquid nitrogen freezing, and then a total RNA purification reagent (ISOGEN; Nippon Gene) was used. Was used to prepare total RNA.
- the extracted total RNA was reacted at 37 ° C. for 90 minutes using DNase (manufactured by Futaba Gene). 25 ⁇ g of the total RNAO treated with DNase was converted to cDNA using a Superscript II First Strand System (for RT-PCR) (GIBCO-BRL).
- PCR For the PCR, an initial denaturation reaction was performed at 95 ° C (10 minutes) using a commercially available PCR reagent [Syber Green PCR Coreage Agent (SYBR Green PCR corereagent); manufactured by Applied Biosystems). Thereafter, a cycle reaction consisting of 94 ° C (15 seconds), 60 ° C (30 seconds) and 72 ° C (60 seconds) was repeated 45 times.
- SYBR Green PCR Coreage Agent SYBR Green PCR corereagent
- the above-mentioned cDNA was used as a type II, and the nucleotide sequence represented by SEQ ID NO: 25 was used. And an oligonucleotide consisting of the nucleotide sequence represented by SEQ ID NO: 26 were used as primer sets for PCR under the same conditions. Further, in order to obtain a standard curve used for calculating the mRNA expression level, PCR was carried out under the same conditions using the above-mentioned primer set with Rad genomic DNA (manufactured by Clontech) as type III.
- G3PDH human glyceraldehyde 3-phosphate dehydrogenase
- the expression level of rat MDTS 9 gene mRNA under each condition was It was shown as a percentage of the PDH gene expression level.
- the rat MDTS 9 gene mRNA was expressed about 5 times as much as the sham-operated rat one week after surgery in the 56 nephrectomy model, and the amount of urinary protein was significantly increased.
- the plasmid pGEX-6P-1 (manufactured by Amersham Pharmacia Biotech) is used as an expression vector in accordance with Yodosha, p. Fusion protein of peptide consisting of amino acids 280-410 in the amino acid sequence with glutathione S-transferase (GST)
- GST-MDTS 9A was produced in the inclusion body fraction using E. coli. Subsequently, the inclusion body fraction was subjected to preparative SDS-polyacrylamide gel electrophoresis (PAGE), and the desired GST-MDTS9A protein was extracted from the gel by the diffusion method (Masato Okada and Kazu Miyazaki) , "Revised Protein Experiment Note", Yodosha, p. 48-51).
- the obtained GST-MDTS 9A protein was immunized to a heron (Japanese white species) 5 times at intervals of 10 to 14 days, and then an antiserum was prepared. From the second antiserum, the IgG fraction was first affinity-purified using a protein G Sepharose F column (manufactured by Amersham Pharmacia Biotech), followed by the amino acid sequence represented by SEQ ID NO: 2.
- Example 8 After reacting the anti-human MDTS 9 antibody prepared in Example 8 (1) with a tissue section fixed in formalin and embedded in paraffin on a slide glass, a commercially available staining kit (Vectorstin ABC-AP kit, catalog number AK) was used. — 5000; manufactured by Vector) according to the attached instructions. At this time, a biotin-labeled anti-magpie antibody (Catalog No. BA-1 000; manufactured by Vector Inc.) as a secondary antibody Alkaline phosphatase substrate kit I (catalog number SK-5100; manufactured by Vector) was used. As a result, staining of epithelial cells, especially glomerular epithelial cells (podocytes), was observed in the kidneys of healthy individuals and diabetic nephropathy (early or late stage) patients.
- a commercially available staining kit Vectorstin ABC-AP kit, catalog number AK
- the polypeptide of the present invention is a novel protease that is induced by TGF-8 and is involved in the metabolism of the extracellular matrix and is expressed in the kidney, the polypeptide activity of the polypeptide of the present invention Inhibitors are likely to inhibit or inhibit only the part of the physiological action of TGF- ⁇ involved in the qualitative change and increase in the amount of extracellular matrix components.
- Useful as a therapeutic that is, according to the polypeptide of the present invention, a simple screening system for a therapeutic agent for chronic renal failure can be provided.
- the polynucleotide, the expression vector, the cell, and the antibody of the present invention are useful for producing the polypeptide of the present invention. Sequence listing free text
- each base sequence represented by the sequences of SEQ ID NOs: 3 and 4 in the sequence listing is an artificially synthesized linker sequence.
- Each base sequence represented by the sequences of SEQ ID NOS: 5 to 9 and 12 to 14 in the sequence listing is an artificially synthesized primer sequence.
- the amino acid sequence represented by SEQ ID NO: 21 in the sequence listing is an amino acid sequence obtained by expression of a DNA containing a nucleotide sequence encoding a restriction enzyme Not I recognition nucleotide sequence and a FLAG tag amino acid sequence. is there.
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WO2003027282A1 (fr) * | 2001-09-24 | 2003-04-03 | Daiichi Fine Chemical Co., Ltd. | Adamts-15, -16, -17, -18 et -19 |
EP1508619A1 (en) * | 2002-06-20 | 2005-02-23 | Yamanouchi Pharmaceutical Co. Ltd. | Novel promoter |
US10713888B2 (en) | 2018-03-01 | 2020-07-14 | Ags Llc | Gaming system having boot locked validation of program installs, data installs and program launches |
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US6448388B1 (en) * | 2000-08-16 | 2002-09-10 | Lexicon Genetics Incorporated | Human proteases and polynucleotides encoding the same |
US9487823B2 (en) | 2002-12-20 | 2016-11-08 | Qiagen Gmbh | Nucleic acid amplification |
EP1863908B1 (de) * | 2005-04-01 | 2010-11-17 | Qiagen GmbH | Reverse transkription und amplifikation von rna bei simultaner degradierung von dna |
EP2295571A1 (en) * | 2005-07-27 | 2011-03-16 | Oncotherapy Science, Inc. | Method of diagnosing small cell lung cancer |
EP1762627A1 (de) | 2005-09-09 | 2007-03-14 | Qiagen GmbH | Verfahren zur Aktivierung einer Nukleinsäure für eine Polymerase-Reaktion |
EP2455755A3 (en) * | 2007-06-22 | 2012-08-15 | GENERA ISTRAZIVANJA d.o.o. | Proteaoglycan-4 as marker for chronic renal failure |
JP6973736B2 (ja) * | 2015-09-14 | 2021-12-01 | 国立大学法人東京工業大学 | 生理活性タンパク質の同定方法及びその方法によって得られた生理活性タンパク質 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1294901A2 (en) * | 2000-05-04 | 2003-03-26 | Sugen, Inc. | Novel proteases |
JPWO2002031163A1 (ja) * | 2000-10-11 | 2004-02-19 | 財団法人かずさディー・エヌ・エー研究所 | 新規なadamtsファミリーポリペプチドおよびそれをコードする遺伝子 |
JP2004535153A (ja) * | 2000-10-18 | 2004-11-25 | インサイト・ゲノミックス・インコーポレイテッド | プロテアーゼ |
JP2003180384A (ja) * | 2001-09-24 | 2003-07-02 | Daiichi Fine Chemical Co Ltd | Adamts−15,−16,−17,−18及び−19 |
WO2003040393A2 (en) * | 2001-11-06 | 2003-05-15 | Decode Genetics Ehf. | Nucleic acids encoding proteases |
-
2001
- 2001-12-21 JP JP2002553479A patent/JPWO2002051998A1/ja active Pending
- 2001-12-21 AT AT01271857T patent/ATE353961T1/de active
- 2001-12-21 ES ES01271857T patent/ES2280306T3/es not_active Expired - Lifetime
- 2001-12-21 WO PCT/JP2001/011251 patent/WO2002051998A1/ja active IP Right Grant
- 2001-12-21 EP EP01271857A patent/EP1347048B1/en not_active Expired - Lifetime
- 2001-12-21 US US10/296,616 patent/US20030129658A1/en not_active Abandoned
- 2001-12-21 DE DE60126659T patent/DE60126659T2/de not_active Expired - Lifetime
Non-Patent Citations (4)
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ABBASZADE I. ET AL.: "Cloning and characterization of ADAMTS11, an aggrecanase from the ADAMTS family", THE JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 274, no. 33, August 1999 (1999-08-01), pages 23443 - 23450, XP002937897 * |
CARNINCI P. ET AL.: "Normalization and substraction of cap-trapper-selected cDNAs to prepare full-length cDNA libraries for rapid discovery of new genes", GENOME RESEARCH, vol. 10, 2000, pages 1617 - 1630, XP002944079 * |
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TORTORELLA M. ET AL.: "The thrombospondin motif of aggrecanase-1 (ADAMTS-4) is critical for aggrecan substrate recognition and cleavage", THE JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 275, no. 33, August 2000 (2000-08-01), pages 25791 - 25797, XP002950307 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003027282A1 (fr) * | 2001-09-24 | 2003-04-03 | Daiichi Fine Chemical Co., Ltd. | Adamts-15, -16, -17, -18 et -19 |
EP1508619A1 (en) * | 2002-06-20 | 2005-02-23 | Yamanouchi Pharmaceutical Co. Ltd. | Novel promoter |
EP1508619A4 (en) * | 2002-06-20 | 2005-11-02 | Astellas Pharma Inc | NEW PROMOTER |
US10713888B2 (en) | 2018-03-01 | 2020-07-14 | Ags Llc | Gaming system having boot locked validation of program installs, data installs and program launches |
Also Published As
Publication number | Publication date |
---|---|
ES2280306T3 (es) | 2007-09-16 |
DE60126659T2 (de) | 2007-10-31 |
EP1347048A4 (en) | 2004-07-21 |
ATE353961T1 (de) | 2007-03-15 |
EP1347048B1 (en) | 2007-02-14 |
EP1347048A1 (en) | 2003-09-24 |
US20030129658A1 (en) | 2003-07-10 |
DE60126659D1 (de) | 2007-03-29 |
JPWO2002051998A1 (ja) | 2004-04-30 |
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