WO1999005290A1 - Nouvelle serine protease - Google Patents
Nouvelle serine protease Download PDFInfo
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- WO1999005290A1 WO1999005290A1 PCT/JP1998/003324 JP9803324W WO9905290A1 WO 1999005290 A1 WO1999005290 A1 WO 1999005290A1 JP 9803324 W JP9803324 W JP 9803324W WO 9905290 A1 WO9905290 A1 WO 9905290A1
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- amino acid
- acid sequence
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- partial peptide
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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
- C12N9/6421—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
- C12N9/6424—Serine endopeptidases (3.4.21)
Definitions
- the present invention provides a novel serine protease, a DNA encoding the same, a method for producing the serine protease, and a screen for a physiologically active substance using the serine protease or the DNA encoding the same.
- Serine protease is widely found in animals, plants and microorganisms. Especially in higher animals, food digestion, blood coagulation / fibrinolysis, complement activation, hormone production, ovulation / fertilization, phagocytosis, It is known to be involved in an extremely large number of biological reactions such as cell proliferation, development, differentiation, aging, and metastasis (Neurath, H. Science, 222, 350-357, 199 8 4)
- serine protease acts as a physiologically important functional molecule also in the central nervous system.
- serine proteases expressed in the brain include tissue-type plasminogen activator (Sappiro, AD., Madani, R., Huarte, J., Belin, D., Ki ss. JZ, Wohlwent, A., and Vassal 1 i, JD., J. CI in. Invest., 92, 679-685, 1993), Trombin (Monard, D.
- serine protease protein coagulation lines ⁇ scheme, click re Ngurudome Lee down, EGF-1 ike structure, off I Nga structure, r - carboxyglutamicacid Tome Lee emissions Naribi to Appuru domain structure, such as Lee down At the N-terminal side (Furie, B., and Furie, BC, Cell, 53, 505-518, 1988).
- perinase, plasminogen activator, plasminogen, and the like are known as serine protein-proteins having a kring domain.
- Klingle domains have the ability to bind fibrin, heparin and ricin analog (Scanu, AM and Edelstein, C., Biochimica. Biophysica. Acta, 1256, 1-12, 1995), in the blood fibrinolysis system, plasminogen activator is bound to the precipitated fibrin via the kring domain, activating the plasmin bound in the vicinity. It is shown.
- angiogenesis inhibitor angiostatin It is clear that this is a single domain in the plasminogen molecule (Cao, Y., Ji, RW, Davidson, D., Scalier, J., Marti, D., So hndel, S., McCance, SG, 0 'Rei 1 ly, .S., LI inis, M., and Folkman, J., J. Biol. Chem., 271, 29461-29467, 1996), Klingle Domain structure A single physiological activity was demonstrated for the first time.
- Cyclophilin C is a series of proteins having the domain structure of the force-venger receptor cis-tin-rich (SRCR) observed in the macrophage force-venger receptor. Binding proteins, Speract receptor, Complement factor I, CD5, CD6, etc. are known (Resnick, D., Pearson, A., and Krieger , M., Trends. Biochem. Sci., 19, 5-8, 1994).
- Cyclophilin C-binding protein and complement factor I are secreted proteins, whereas the Speract receptor and CD5 and CD6 are membrane-bound proteins. It is known to be a binding protein. Among them, the protein that binds to the membrane-bound protein CD6 was found to be an activated leukocyte adhesion molecule (ALCAM), and the binding position is located in the SRCR domain structure of CD6. Kotagawa (Whitney, GS, Starling, GC, Bowen, MA, Modrel 1, B., Siadak, AW, and Aruffo, AJ Biol. Chem., 270, 18187-18190, 1995) It is known that ALCAM, a ligand for CD6, is expressed on activated lymphocytes and neurons.
- ALCAM activated leukocyte adhesion molecule
- a protein having a plurality of domain structures not only has a unique function in each domain, but also has an associated function in each domain. Are considered to function with specific cognitive functions
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a novel serine protease and a novel serine protease DNA encoding the same. Another object of the present invention is to provide a method for producing the protease in a large amount using the DNA, and a method for screening a physiologically active substance using the serine protease or a DNA encoding the same. It is assumed that
- the present invention is based on (1) To 12 (SEQ ID NO: 6), the same amino acid sequence as the serine protease, or an amino acid sequence in which a part thereof is deleted or substituted, or the same amino acid sequence or A serine protease comprising an amino acid sequence in which one or more amino acids have been added to the amino acid sequence in which a part thereof has been deleted or substituted, or a partial amino acid sequence thereof.
- SEQ ID NO: 6 To 12
- SEQ ID NO: 6 the same amino acid sequence as the serine protease, or an amino acid sequence in which a part thereof is deleted or substituted, or the same amino acid sequence or A serine protease comprising an amino acid sequence in which one or more amino acids have been added to the amino acid sequence in which a part thereof has been deleted or substituted, or a partial amino acid sequence thereof.
- FIG. 1 to 12 SEQ ID NO: 6 having the same amino acid sequence as the serine proteinase domain consisting of the amino acid sequences of 578 to 8222 or a part thereof.
- Serine protease comprising an amino acid sequence to which is added Provide the domain or its partial peptides.
- the present invention further provides (3) FIG. 1 to 12 (SEQ ID NO: 6), the amino acid sequence consisting of the amino acid sequence of amino acids 40 to 112, or a part of the same amino acid sequence as the kling domain.
- the present invention further relates to (4) Amino acid numbers 11 17 to 21 17, 22 7 to 32 7, and 33 3 shown in FIGS. 7 to 12 (SEQ ID NO: 6).
- Amino acid sequence identical to the scavenger receptor cystin litsch (SRCR) domain consisting of amino acid sequences 4 to 433 or numbers 447 to 547 or a part thereof is deleted
- One or more amino acids are added to the substituted amino acid sequence or to the amino acid sequence in which the same amino acid sequence or a part thereof is deleted or substituted.
- a SRCR domain comprising the amino acid sequence or a partial peptide thereof.
- the present invention further provides (5) a DNA encoding the serine protease, domain or partial peptide thereof according to any of (1) to (4) above.
- the present invention further provides (6) a DNA encoding the serine protease, domain or partial peptide thereof according to any of (1) to (4) above, and a string DNA that hybridizes under mild conditions and encodes a peptide having serine protease, domain, or partial peptide activity thereof.
- the present invention further provides (7) an expression vector comprising the DNA of (5) or (6). / JP98 / 03324
- the present invention further provides (8) a host transformed by the expression vector according to (7).
- the present invention further provides (9) a method of culturing or breeding the host according to the above (8), and collecting serine protease, domain, or a partial peptide thereof. It provides a method for producing zeolites, domains or their partial peptides.
- the present invention further provides (10) an antibody having the serine protease, domain, or partial peptide thereof described in any of (1) to (4) as an antigen.
- the present invention further provides (11) the serine protease or domain described in any one of the above (1) to (4), or a partial peptide thereof, or the above (5) or (5). 6) A method for screening a physiologically active substance using the DNA according to 6).
- FIG. 1 shows a portion of the nucleotide sequence of cDNA encoding mouse serine protease and the corresponding amino acid sequence.
- FIG. 2 shows a portion of the nucleotide sequence of cDNA encoding mouse serine protease and the corresponding amino acid sequence.
- FIG. 3 shows a portion of the nucleotide sequence of cDNA encoding mouse serine protease and the corresponding amino acid sequence.
- FIG. 4 shows a portion of the nucleotide sequence of cDNA encoding mouse serine protease and the corresponding amino acid sequence.
- FIG. 5 shows a part of the nucleotide sequence of cDNA which encodes mouse serine protease and the corresponding amino acid sequence.
- FIG. 6 shows a part of the nucleotide sequence of cDNA encoding mouse serine protease and the corresponding amino acid sequence. / JP98 / 03324
- FIG. 7 shows a portion of the nucleotide sequence of cDNA which encodes human serine protease, and the corresponding amino acid sequence.
- FIG. 8 shows a part of the nucleotide sequence of cDNA which encodes human serine protease, and the corresponding amino acid sequence.
- FIG. 9 shows a portion of the nucleotide sequence of cDNA which encodes human serine protease, and the corresponding amino acid sequence.
- FIG. 10 shows a part of the nucleotide sequence of cDNA which encodes human serine protease, and the corresponding amino acid sequence.
- FIG. 11 shows a part of the nucleotide sequence of cDNA encoding human 'serine protease and the corresponding amino acid sequence.
- FIG. 12 shows a part of the nucleotide sequence of cDNA which encodes human serine protease and the corresponding amino acid sequence.
- FIG. 13 is an electrophoretogram showing the results of Northern blottin showing transcription of the serine protease gene in each mouse organ.
- Cloning of cDNA encoding mouse serine protease is performed by first preparing a cDNA library from mouse brain-derived mRNA isolated and prepared according to a conventional method, and then preparing the cDNA library. The PCR was performed using a PCR primer designed based on the serine protease motif. Using the PCR product obtained here as a probe, screening was performed for clones that have a long 5 'translation region and are expected to encode novel functional proteins.
- mouse BSSP-3 a 2.7 kb cDNA designated as mouse BSSP-3.
- the obtained cDNA sequence was examined by a conventional method.
- mouse BSSP-3 cDNA was found to be not only serine proteinase domain but also clone domain and small domain. It has been clarified that it encodes a novel functional protein including the force-venger receptor cysteine-rich domain.
- the isolated mouse BSSP-3 cDNA encodes one kring domain, three scavenger receptor cystine rich domains and one serine proteinase domain.
- a specific example is described in Example 1.
- mouse BSSP-13 mRNA in each mouse organ and each region of the mouse brain was confirmed using the isolated mouse BSSP-3c full-length probe as a probe. Strong expression was observed, and expression was also observed in lung and kidney. In each part of the mouse brain, strong expression was observed in the cerebrum and brain stem, and expression was also observed in medulla oblongata. Its size was only about 2.7 kb in each case. Of the brain sites examined, expression of mouse BSSP-3mRNA was not observed in the cerebellum. A specific example is described in Example 2. This confirmed that mouse BSPSP-3mRNA was actually expressed in mouse organs.
- human BSSP-3 cDNA was successfully isolated.
- human BSSP-3 cDNA is clearly different from what would be expected from the primary structure of mouse BSSP-3 cDNA, with one kring domain and four scavenges.
- the gene encodes a receptor domain and a single serine proteinase domain.
- Example 3 the present inventors have expressed, in COS-1 cells, DNA encoding human serine protease mature protein among human BSSP-3c DNAs. It was revealed that it was a functional protein with apparent enzyme activity. A specific example is described in Example 4.
- the mouse and human BSSP-3 cDNAs isolated in this study were composed of a new serine protease domain, a new kringle domain, and a new scavenger receptor system due to their primary structures.
- serine proteinase domain is a functional protein having enzymatic activity.
- novel functional protein in the present invention not only clearly has a complex function in the primary structure, but also plays a certain role in physiological functions in the brain through the complex function. Therefore, the novel functional proteins encoded by the mouse BSSP-3cDNA and the mouse BSSP-3cDNA of the present invention provide a useful means for analyzing the pathology of various mouse disease models.
- human BSSP-3c DNA of the present invention and novel functional proteins encoded by the human BSSP-3c DNA include various types of proteins. It provides a method for screening therapeutic agents for diseases, and can also be applied to the development of actual therapeutic agents for human diseases.
- Examples of the therapy include replacement therapy by administration of a genetic recombinant and therapy for promoting or suppressing gene expression by a sense or antisense method.
- each of the domain structures of the novel functional protein can also function independently. Therefore, after individually expressing each domain structure, a molecule that interacts with each domain structure can be identified. In addition, by examining the involvement of the identified molecular groups in diseases, replacement therapy by administration of genetically modified organisms and gene expression promotion or suppression therapy by sense or antisense methods are performed. Is also possible.
- FIGS. 1 to 6 SEQ ID NO: 3
- cDNA can be obtained as described in Examples, but is not limited thereto. That is, the DNA encoding the natural serine protease is specifically disclosed in the present invention if one nucleotide sequence encoding the amino acid sequence of the natural serine protease is determined. It can be cloned as cDNA by a strategy different from the strategy, and can also be cloned from the genome of the cell that produces it.
- PCR polymerase chain reaction
- the DNA of the present invention further encodes a protein or a glycoprotein having serine protease activity, and can be obtained by encoding the protein of FIG. 1-6 (SEQ ID NO: 3) or FIG. 7-12 (SEQ ID NO: 5). DNAs that hybridize to nucleotide sequences are also included. Also, the general method of hybridization is well known to those skilled in the art (for example, Special Issue on Experimental Medicine, Yodosha, “Biotechnology—Experimental Method Series Genetic Engineering Summary”, Vo 1.5, No. 11, 24-60, 1987), activity measurements are also well known to those skilled in the art.
- the various primer or probe nucleotides used in the examples can be used as probes for selection of genomic DNA fragments.
- Figure 1-6 SEQ ID NO: 3
- Other probes designed based on the nucleotide sequences described in SEQ ID NOs: 1 to 12 SEQ ID NO: 5
- General methods for cloning DNA of interest from genomics are well known in the art (Current Protocols In Molecular Biology, John Wiley & Sons, Chapters 5 and 6).
- DNA encoding the natural serine protease of the present invention can also be prepared by DNA synthesis.
- Chemical synthesis of DNA is the industry's automated DNA synthesizer, such as Applied Biosystems.
- FIGS. 1-6 SEQ ID NO: 3
- FIGS. 1-6 SEQ ID NO: 3
- DNA having the nucleotide sequence shown in 5) can be easily synthesized.
- DNA encoding the natural serine protease of the present invention with a codon different from the native codon can also be prepared by chemical synthesis as described above, and can be prepared using the method shown in FIGS. 1 to 6 (SEQ ID NO: 3) or Figure?
- DNA or RNA having the nucleotide sequence shown in SEQ ID NO: 1 to 5 (SEQ ID NO: 5) can be obtained by a site-directed mutagenesis method using site-directed mutagenesis as a type I together with a mutagenic primer. (See, eg, Current Protocols In Molecular Biology, John Wiley Sons, Chapter 8.).
- the native amino acid A polypeptide in which one or more amino acids are added to the sequence and which still maintains serine protease activity;
- a polypeptide from which a plurality of amino acids have been removed and which still maintain serine protease activity, one to a plurality of amino acids in the natural amino acid sequence are other amino acids
- Various mutant serine proteases can be designed and manufactured, such as polypeptides that maintain the serine protease activity without the mutation.
- the number of amino acids in the above mutations such as addition, removal and substitution of amino acids is not particularly limited, and the number of amino acids added is, for example, used for the hybrid protein with serine protease of the present invention.
- the number of amino acids of functional proteins for example, known extraction and purification or stabilization proteins such as maltose binding protein (ma1tose-bindingrotein) or various physiologically active proteins such as serine protein It depends on that of the signal peptide added to the enzyme, that is, depends on the purpose of the mutation, for example, 1 to 50, preferably 1 to 10 is added.
- the number of amino acids to be removed is designed and determined so that serine proteinase activity is maintained, for example, 1 to 30, preferably 1 to 20, and The number of amino acids in a region other than the active region of serine protease may be mentioned. Furthermore, for substitutions, the number of amino acids to be substituted is designed and determined to maintain serine protease activity, for example from 1 to 10, preferably from 1 to 5 Is raised.
- FIG. 1 to FIG. 6 SEQ ID NO: 4 or FIG. A serine proteinase domain consisting of amino acid sequences of amino acids 5 17 to 7 61 or 5 78 to 8 22 shown in SEQ ID NOs: 1 to 12 (SEQ ID NO: 6), respectively.
- Figures 1-6 SEQ ID NO: 4 or Figure? 1 to 12 (SEQ ID NO: 6), a single domain consisting of amino acid sequences from 85 to 157 or 40 to 112 amino acids, respectively.
- 1 to 6 SEQ ID NO: 4 or figure?
- the present invention provides a scavenger receptor cysteine-rich (SRCR) domain, which can be prepared by a method described below, a peptide synthesis method known per se, or an appropriate proteinase by a suitable protease. It can be carried out by cleavage of the protease, and a mutant domain that maintains the activity of the domain of the present invention or a DNA encoding the same can also be produced.
- SRCR scavenger receptor cysteine-rich
- the serine protease or domain DNA of the present invention can be used to produce a recombinant serine protease or domain by a conventional gene recombination method. . That is, DNA encoding the serine protease or domain of the present invention is introduced into an appropriate expression vector, the expression vector is introduced into an appropriate host cell, and the host cell is cultured. Intake the desired serine protease or domain from the culture (cells or medium) obtained.
- the serine protease or domain of the present invention may have a biochemical or chemical modification, such as N-terminal acylation, for example, C-sylation or deletion such as formylation, acetylation, or the like. May be obtained in the form of No.
- the expression system can also improve the secretion efficiency and expression level by adding or improving a signal sequence or selecting a host.
- a gene encoding a signal peptide of another structural peptide is placed upstream of the serine protease or domain of the structural gene 5 ′ of the present invention.
- a method of linking via a gene encoding a cleavable partial peptide As a specific example, the method using the gene encoding the signal sequence of the trypsin gene and the enterokinase recognition sequence described in Example 4 can be mentioned.
- Prokaryote or eukaryote can be used as a host.
- bacteria in particular, Escherichia coli (Escherichiacol o), bacteria of the genus Bacillus (Bacillus), for example, Bacillus subtilis (dan. Subtilis), and the like can be used.
- eukaryotes include yeasts, e.g., Saccharomyces yeasts, e.g., Saccharomyces' s. podopterafrugiperda), key looper cells (T_ri—ch ⁇ 1usiani), silkworm cells (Bombyxmori), animal cells such as human cells, monkey cells, mouse cells, etc.
- COS-1 Cells Vero cells, CH0 cells, L cells, myeloma cells, C127 cells, BAL BZc3T3 cells, Sp-2ZO cells and the like can be used.
- an organism itself for example, an insect, for example, a silkworm, a cabbage, or the like, can also be used.
- Plasmid, phage, phagemid, virus (baculo (insect), vaccinia (animal cell)) and the like can be used as expression vectors.
- Promoter selection in expression vector depends on host cell
- 1 ac promoter, tr promoter, etc. are used as bacterial promoters
- adhl promoter, pqk promoter, etc. are used as yeast promoters.
- the promoter for Baculovirus polydolin promoter is used as a promoter for the cell.
- ear 1 y or 1 ate of Simian Virus 40 or 1 ate promoter the CMV promoter, the HSV-TK promoter or
- One example is the SR a promoter.
- expression vectors include enhancers, splicing signals, poly-A addition signals, selection factors (eg, dihydrofolate reductase gene (metrexate resistance), ne 0 gene (G4 18 resistant) etc.) is preferred.
- an enhancer for example, an enhancer such as SV40 is inserted upstream or downstream of the gene.
- Transformation of a host with an expression vector can be carried out by conventional methods well known in the art, and these methods are described in, for example, Current Protocols in Molecular Biology, John Wiley & Sons. .
- the culture of the transformant can also be performed according to a conventional method.
- o Purification of serine protease or domain from the culture may be performed according to a conventional method for isolating and purifying the protein, for example, an Filtration and various types of column chromatography, for example, chromatography using Sepharose, etc. can be performed.
- the serine protease or domain of the present invention thus obtained is a functional protein, and therefore provides a useful means for pathological analysis and enables screening of a physiologically active substance using the protein.
- the screening method is useful for exploratory research on therapeutic agents for various diseases.
- Specific examples of screening methods include, for example, Test samples such as peptides, proteins, non-peptidic compounds, synthetic compounds, and fermentation products, or natural components obtained from various cell culture supernatants, and artificial components such as various synthetic compounds.
- serine protease or domain of the present invention or a partial peptide thereof or the above-described serine protease, domain or a DNA encoding the partial peptide may be used.
- the above-described measurement of the physiological activity and the measurement of the binding affinity using the transformed host or its cell membrane fraction are also preferable embodiments of the screening method of the present invention.
- DNA encoding the serine protease, domain or partial peptide thereof of the present invention can be used for replacement therapy by administration of a recombinant and gene expression promotion or suppression therapy by a sense or antisense method. It is provided as a useful tool for elucidating physiological functions in the body, and is also used for screening new drugs based on the elucidated information.
- the serine protease, domain, or partial peptide thereof or the DNA encoding them according to the present invention may be prepared in a form that can be used in carrying out the above-mentioned screening method.
- the partial peptides that can be provided as peptides include peptide fragments present in the vicinity of serine residues in the active site and recognition of the serine protease or domain-specific antibody of the present invention. Peptide fragments comprising regions specific to the serine protease of the present invention, such as peptide fragments that can be sites, may be mentioned.
- the partial peptide may be prepared by the method described above for the serine protein or domain of the present invention, or by a peptide synthesis method known per se or an appropriate proteinase.
- the above-mentioned cell membrane fraction can be obtained by culturing a host cell capable of expressing a DNA encoding the serine protease, domain or a partial peptide thereof of the present invention under conditions capable of expression. This refers to a fraction obtained by crushing host cells containing serine protease, domain or its partial peptide by a method known per se, and then obtaining a large amount of cell membrane.
- the method for screening a physiologically active substance using the serine protease, domain or partial peptide thereof according to the present invention is a method for screening a serine protease, domain or partial peptide thereof according to the present invention. Screening the test sample using the DNA encoding them, the host cell containing the serine protease, domain, or its partial peptide, or its cell membrane fraction. It is performed by As a specific method, an activity measuring method or binding using the serine protease of the present invention, the domain of domain and its partial peptide, for example, a synthetic substrate such as a chromogenic substrate, a substrate labeled with a radionuclide, and the like. It is performed by an affinity measurement method.
- the cell When a host cell containing serine protease, domain, or a partial peptide thereof is used, the cell may be immobilized by a method known per se (eg, with dartartaldehyde, formaldehyde, etc.). it can.
- a method known per se eg, with dartartaldehyde, formaldehyde, etc.
- the method is used to evaluate the promotion or suppression of gene expression, for example, using a reporter gene such as a luciferase gene. be able to.
- RNA 51 (about 6) was added oligo dT primer 1-2 1 (1 g), heated at 70 ° C for 10 minutes, and quenched in ice.
- the primer number is based on the amino acid conserved region (N-Va1-Leu-Thr-Ala-Ala-His-Cys) near the active residue (His) as a primer. : Ori sesame one shown in 1 KY 1 8 5 (5 '— GTG
- the supernatant obtained by centrifugation at 400 xg for 5 minutes was transferred to another 50 ml centrifuge tube, and the 5 MNaCl solution was added to the mixture at 950 ⁇ 1
- the solution was passed through the 21-gauge injection needle again three times using a syringe.
- 1 tablet of oligo (dT) cellulose was added to this solution, and after swelling for 2 minutes, it was vibrated slowly for 1 hour. After 1 hour, centrifuge at 2,000 x g for 5 minutes, aspirate the supernatant, suspend in 20 ml of binding buffer, and centrifuge the pellet to further add 10 ml of binding buffer.
- the plate was washed three times with 10 ml of a low salt concentration washing solution. After the final washing, suspend the oligo (dT) cellulose in a low-salt washing solution of 800 // 1 and put it into a spin column.Wash the centrifugal washing 3 times at 500 x Xg for 10 seconds. I returned. After washing, 200 ⁇ l of elution buffer was added, and centrifugation was repeated twice at 500 ⁇ 10 g for 10 seconds to obtain 4001 mRNA solution.
- the mR NA was recovered from the mR NA solution by ethanol precipitation according to a conventional method, and dissolved in 201 D EPC-treated distilled water.
- T4DNA polymerase One (10 U) of T4DNA polymerase was added and reacted at 16 ° C for 5 minutes.
- cDNA was packaged using Gigapack Packing Extracts (Stratagene). That is, after ligation of 0.1 ⁇ g Z ⁇ 1, add Freee — thaw Extract 10 / zl attached to the kit to cDNA solution 1 ⁇ 1 and then add the kit. G The attached Sonic Extract 15 51 was added immediately and stirred well. After standing for 2 hours at room temperature, 5 0 0 1 full Aji dilution buffer (1 0 0 mM N a C l, 1 0 m MM g S 0 4, 5 0 mM T ris / HC lp H 7. 5, 0 0 1% gelatin)
- 201 mouthpiece form was added. After mixing well, the mixture was centrifuged at 1500 rpm for 5 minutes at room temperature, and the supernatant was collected to obtain a phage solution. This phage solution was infected with host Escherichia coli after titration according to a conventional method.
- Example 1 was labeled with alpha-32 P d CTP using the resulting DNA fragment B ca B est DNA 1 abe 1 ingkit (T akara) in (1) to prepare a probe. Using this probe, about 400,000 clones of the cDNA library obtained in the previous step were screened. As a result, the longest clone of the imported DNA fragment, PUC 18 / m BSSP-3 / l-1, was obtained from about 400,000 clones.
- the full-length cDNA of pUC18ZmBSSP-3Zl-l is 2,597 base pairs, 24 4 base pairs of 5 'untranslated region, 2283 base pairs of translated region, 7 It consists of 0 base pairs of the 3 'untranslated region, which not only encodes the serine protease domain (amino acid number: 517-761) but also the cloned domain. (Amino acid number: 85 to 157) and scavenger receptor cystine rich domain (amino acid number domain 1: 166—266, domain 2 : 2 7 3 — 3 7 2, and domain 3: 3 8 6 to 4 8 6).
- Mouse brain tota1 RNA was prepared using Trisol reagent (Lifetechnoguchi) according to the attached document. That is, the cerebrum, brain stem, cerebellum and medulla of the mouse were removed, immediately homogenized with polytron, and the tissue was dissolved by adding 10 times the tissue volume (about 3 ml) of the resolving reagent. . Further, the clonal form 6001 was added thereto, followed by stirring and centrifugation at 15,000 rpm at 4 ° C for 15 minutes. After the centrifugation, the aqueous phase was collected, 1501 isopropanol was added to the collected aqueous phase, the mixture was stirred, and centrifuged at 150,000 rpm at 4 ° C for 30 minutes.
- Trisol reagent Lifetechnoguchi
- RNAs at various parts of the mouse brain were dissolved in 4001 DEPC-treated distilled water, and then plotted on a membrane filter according to a conventional method. Then, p UC 1 8 / m BSSP - 3 / l - l was digested with the restriction enzyme E c 0 RI, about 2. The DNA fragment of 7 kbp isolated 'purified, the above-described method Dehi - 32 P A probe was prepared by labeling with dCTP.
- This probe was prepared using a membrane filter prepared by blotting t0ta1 RNA prepared from each of the mouse brain sites described above and a membrane filter prepared by blotting mRNA prepared from various commercially available organs. After hybridization overnight at 55 ° C with 2 x SSC containing 0.1% SDS (150 mM MNaC1, 15 mM MS). odiumcitrate) at room temperature for 20 minutes, followed by 2 washes at 65 ° C for 30 minutes at 0. lx SSC, 0.1% SDS, and an imaging plate for BAS 2000 (Fuji Photo The film was exposed for 30 minutes.
- the human brain cDNA library was purchased from Clontech.
- the mouse BSPP-3cDNA fragment was fluorescently labeled with glutaraldehyde to prepare a probe. Using this probe, approximately 400,000 clones of human brain cDNA library were screened to obtain pUC18 / hBSSP-3.
- the translation region of BSSP-3c DNA encodes the serine protease domain (amino acid number: 578-8822), similar to the mouse BSSP-3c DNA. Not only that, but not limited to, the clean domain (amino acid number: 40 to 112) and the scavenger receptor cysteine rich domain (amino acid number domain 1: 1 1 to 2) 17, Domain 2: 2 27-3 2 7, Domain 3: 3 3 4-4 3 3, Domain 4: 4 7-5 4 7) It was clear that they were
- the scavenger receptor cis-tin-rich domain is clearly different from that expected from the primary structure of the mouse BSSP-3 cDNA, whereas that of the mouse BSSP-3 is three. It turned out that there were four human BSSP-3s.
- the chimeric gene DNA prepared in Example 4 (1) was (Life Technologies) and transfused into COS-1 cells. That is, a 10 cm diameter culture dish (Corning, 431067) was placed on a Dulbecco's minimal essential medium (DMEM, Nissui Pharmaceutical) containing 10% fetal calf serum. S- 1 were implanted cells a 5 X 1 0 5 cells. The next day, the cells were rinsed with 5 ml of Opti-MEM medium (Life Technology 1 ogies), and 5 ml of new 0 pti-MEM medium was added, followed by culturing at 37 ° C for 2 hours.
- DMEM Dulbecco's minimal essential medium
- a mixture of 1 ⁇ g of the above-mentioned plasmid and 5 g of lipofectin was added to each dish, and cultured at 37 ° C. for 5 hours.
- 5 ml of Opti-MEM medium was added to make a total of 10 ml, and the cells were cultured at 37 ° C for 72 hours.
- the culture supernatant was collected by centrifugation, and used as a sample for measuring the enzyme activity.
- a culture supernatant in which only the expression plasmid pdKCR was transfused into COS-1 cells was also prepared.
- the enzyme activity in the culture supernatant obtained in Example 4 (2) was measured. That is, 5 ⁇ l of enterokinase (10 mg / ml, Biozyme Laboratories) was mixed with 45 1 of the culture supernatant of COS-1 cells, and reacted at 37 ° C. for 2 hours. Next, the synthetic substrate Boc—Phe—Ser-Arg—MCA (Peptide Research Laboratories) dissolved in DMS0 was diluted with 0.1 MTris / HCl, pH 8.0. 501 was added with 2 mM substrate solution, and reacted at 4 ° C. for 16 hours. After the reaction, the fluorescence was measured at an excitation wavelength of 485 nm and an emission wavelength of 535 nm.
- the present inventors have developed novel functional proteins, including not only a novel serine mouth domain but also a novel clone domain and a novel scavenger receptor Yuichi Sistine Reit domain, from a mouse brain cDNA library.
- the mouse BSSP-3c DNA was isolated.
- the isolated mouse BSSP-3 cDNA encodes a single domain, three scavenger receptor cystine-rich domains, and one serine proteinase domain. .
- the present inventors found that the mouse BSSP-3 mRNA is strongly expressed in the brain, and that the brain BS and brain stem, in particular, It was revealed that it was strongly expressed.
- human BSSP-3 cDNA is clearly different from what would be expected from the primary structure of mouse BSSP-3 cDNA, with one Kring domain and four scavenger receptors. It revealed that it encodes a cysteine rich domain and one serine proteinase domain. Furthermore, when the present inventors expressed in human COS-1 cells a DNA encoding human serine proteinase mature protein among human BSSP-3 cDNAs, they clearly showed enzymatic activity. Clarified that it is a functional protein.
- the novel functional protein in the present invention not only clearly has a complex function in the primary structure, but also has a It plays a certain role in the physiology of the brain through its complex functions. Therefore, the mouse BSSP-3 cDNA and the novel functional protein encoded by the mouse BSSP-3 cDNA of the present invention provide useful means for analyzing the pathological state of various mouse disease models.
- the human BSSP-3c DNA of the present invention and the novel functional protein encoded by the human BSSP-3c DNA are It provides a means for screening various therapeutic agents, and can be applied to the development of actual therapeutic agents for human diseases.
- the therapeutic method include replacement therapy by administration of a genetic recombinant and therapy for promoting or suppressing gene expression by a sense or antisense method.
- each of the domain structures of the new functional protein can also function independently. Therefore, after individually expressing each domain structure, a molecule interacting with each domain structure can be identified. In addition, by examining the involvement of the identified molecules in diseases, it is possible to carry out replacement therapy by administration of a genetic recombinant and promotion or suppression of gene expression by the sense or antisense method.
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Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98933934A EP0949334A4 (en) | 1997-07-24 | 1998-07-24 | NEW SERINE PROTEASE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9/213969 | 1997-07-24 | ||
| JP9213969A JPH1132778A (ja) | 1997-07-24 | 1997-07-24 | 新規セリンプロテアーゼ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999005290A1 true WO1999005290A1 (fr) | 1999-02-04 |
Family
ID=16648070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/003324 Ceased WO1999005290A1 (fr) | 1997-07-24 | 1998-07-24 | Nouvelle serine protease |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020160490A1 (ja) |
| EP (1) | EP0949334A4 (ja) |
| JP (1) | JPH1132778A (ja) |
| WO (1) | WO1999005290A1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2692596B1 (fr) * | 1992-06-22 | 1995-03-31 | Lorraine Laminage | Tôle revêtue et procédé de fabrication de cette tôle. |
| CH692507A5 (de) * | 1997-04-26 | 2002-07-15 | Peter Prof Dr Sonderegger | Neurotrypsin als aktive Verbindung in einem Medikament. |
| WO2000031272A1 (en) * | 1998-11-20 | 2000-06-02 | Fuso Pharmaceutical Industries, Ltd. | Novel serine protease bssp2 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9000629D0 (en) * | 1990-01-11 | 1990-03-14 | Porton Prod Ltd | Tissue plasminogen activator |
| CH692507A5 (de) * | 1997-04-26 | 2002-07-15 | Peter Prof Dr Sonderegger | Neurotrypsin als aktive Verbindung in einem Medikament. |
-
1997
- 1997-07-24 JP JP9213969A patent/JPH1132778A/ja active Pending
-
1998
- 1998-07-24 US US09/147,947 patent/US20020160490A1/en not_active Abandoned
- 1998-07-24 WO PCT/JP1998/003324 patent/WO1999005290A1/ja not_active Ceased
- 1998-07-24 EP EP98933934A patent/EP0949334A4/en not_active Withdrawn
Non-Patent Citations (3)
| Title |
|---|
| PROBA K., ET AL.: "CLONING AND SEQUENCING OF THE CDNA ENCODING HUMAN NEUROTYPSIN.", BIOCHIMICA ET BIOPHYSICA ACTA . GENE STRUCTURE AND EXPRESSION., ELSEVIER, AMSTERDAM., NL, vol. 1396., no. 02., 1 January 1998 (1998-01-01), NL, pages 143 - 147., XP002912999, ISSN: 0167-4781, DOI: 10.1016/S0167-4781(97)00205-4 * |
| See also references of EP0949334A4 * |
| YAMAMURA Y., ET AL.: "MOLECULAR CLONING OF A NOVEL BRAIN-SPECIFIC SERINE PROTEASE WITH A KRINGLE-LIKE STRUCTURE AND THREE SCAVENGER RECEPTOR CYSTEINE-RICH MOTIFS.", BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, ELSEVIER, AMSTERDAM, NL, vol. 239., no. 02., 1 January 1997 (1997-01-01), AMSTERDAM, NL, pages 386 - 392., XP002913000, ISSN: 0006-291X, DOI: 10.1006/bbrc.1997.7417 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020160490A1 (en) | 2002-10-31 |
| JPH1132778A (ja) | 1999-02-09 |
| EP0949334A4 (en) | 2002-11-13 |
| EP0949334A1 (en) | 1999-10-13 |
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