WO2001074869A1 - Nouveau polypeptide, proteine humaine de choc thermique 15, et polynucleotide codant pour ce polypeptide - Google Patents
Nouveau polypeptide, proteine humaine de choc thermique 15, et polynucleotide codant pour ce polypeptide Download PDFInfo
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- WO2001074869A1 WO2001074869A1 PCT/CN2001/000208 CN0100208W WO0174869A1 WO 2001074869 A1 WO2001074869 A1 WO 2001074869A1 CN 0100208 W CN0100208 W CN 0100208W WO 0174869 A1 WO0174869 A1 WO 0174869A1
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- polypeptide
- polynucleotide
- heat shock
- shock protein
- human heat
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention belongs to the field of biotechnology, and specifically, the present invention describes a new polypeptide—a human heat shock protein 15, and a polynucleotide sequence encoding the polypeptide.
- the invention also relates to a preparation method and application of the polynucleotide and polypeptide.
- HeLa cell lines In some organisms, such as Drosophila, yeast, and some cultured HeLa cell lines, special proteins are synthesized when the ambient temperature increases. For example, when the ambient temperature of HeLa cell line is increased to 45 C for 10 minutes, the synthesis of at least three groups of proteins will increase. [Europ. J. Biochem. 117: 341-346, 1981.] This synthesis can be inhibited by actinomycin D, indicating that the synthesis is regulated by transcription. This protein is called heat shock protein. When cells are exposed to other environmental stresses that are not good for metabolism, such as radiation, toxic metal ions, etc., they also express such proteins. Therefore, this protein is also called stress protein. Heat shock proteins are important for maintaining the integrity of the cell.
- HSP70 gene is located in the gene region of the major tissue-associated complex (MHC) of class III and is MHC-related.
- HSP70 heat shock protein expression
- HSP70 protein is expressed in many types of cancer and has a certain effect on prognosis and resistance. [Onkologie 1999, 22: 3: 236-239]
- the cytokine and proto-oncogene mRNA is at 3, and the AU-rich portion of the untranslated region often degrades quickly. This degradation is associated with binding to the binding protein AUF1, which is rich in AU sequences.
- AUF1 forms complexes with heat shock proteins HSC70 and HSP70, translation initiation factor EIF4G, and poly (A) binding proteins.
- HSC70 and HSP70 heat shock proteins
- EIF4G translation initiation factor
- AUF1 poly (A) binding proteins.
- EIF4G dissociates from AUF1
- AUF1 is ubiquitinated
- AUF1 is degraded by the proteasome.
- HSP70 protein produced during heat shock, negative regulation of the ubiquitin-proteasome network, and Inactivation hinders the degradation of AU-rich mRNA and AUF1.
- the human heat shock protein 15 protein plays an important role in regulating important functions of the body such as cell division and embryo development, and it is believed that a large number of proteins are involved in these regulatory processes, so there has been a need in the art to identify more of these processes Human heat shock protein 15 protein, especially the amino acid sequence of this protein is identified. Isolation of the new human heat shock protein 15 protein encoding gene also provides a basis for research to determine the role of the protein in health and disease states. This protein may form the basis for the development of diagnostic and / or therapeutic drugs for diseases, so it is important to isolate its coding for DM. Disclosure of invention
- Another object of the invention is to provide a polynucleotide encoding the polypeptide.
- Another object of the present invention is to provide a recombinant vector containing a polynucleotide encoding human heat shock protein 15.
- Another object of the present invention is to provide a genetically engineered host cell containing a polynucleotide encoding human heat shock protein 15.
- Another object of the present invention is to provide a method for producing human heat shock protein 15.
- Another object of the present invention is to provide an antibody against a human heat shock protein 15 of the polypeptide of the present invention.
- Another object of the present invention is to provide mimic compounds, antagonists, agonists, and inhibitors against the human-shock protein 15 of the polypeptide of the present invention.
- Another object of the present invention is to provide a method for diagnosing and treating diseases related to abnormalities in human heat shock protein 15.
- the present invention relates to an isolated polypeptide, which is of human origin and comprises: a polypeptide having the amino acid sequence of SEQ ID No. 2, or a conservative variant, biologically active fragment or derivative thereof.
- the polypeptide is a polypeptide having the amino acid sequence of SEQ ID NO: 2.
- the invention also relates to an isolated polynucleotide comprising a nucleotide sequence or a variant thereof selected from the group consisting of:
- sequence of the polynucleotide is one selected from: (a) a sequence having positions 314-712 in SEQ ID NO: 1; and (b) having a sequence of 1-1309 in SEQ ID NO: 1 Sequence of bits.
- the present invention further relates to a vector, particularly an expression vector, containing the polynucleotide of the present invention; a host cell genetically engineered with the vector, including a transformed, transduced or transfected host cell; Host cell and method of preparing the polypeptide of the present invention by recovering the expression product.
- the invention also relates to an antibody capable of specifically binding to a polypeptide of the invention.
- the invention also relates to a method for screening compounds that mimic, activate, antagonize or inhibit the activity of human heat shock protein 15 protein, which comprises utilizing the polypeptide of the invention.
- the invention also relates to compounds obtained by this method.
- the invention also relates to a method for detecting a disease or disease susceptibility related to abnormal expression of human heat shock protein 15 protein in vitro, which comprises detecting a mutation in the polypeptide or a polynucleotide sequence encoding the same in a biological sample, or detecting a biological sample.
- the amount or biological activity of a polypeptide of the invention comprises detecting a mutation in the polypeptide or a polynucleotide sequence encoding the same in a biological sample, or detecting a biological sample.
- the invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising a polypeptide of the invention or a mimetic thereof, an activator, an antagonist or an inhibitor, and a pharmaceutically acceptable carrier.
- the present invention also relates to the preparation of the polypeptide and / or polynucleotide of the present invention for the treatment of stroke, neurodegeneration, epilepsy and trauma, Down syndrome, various tumors, inflammation, immune diseases, blood diseases, development disorders , HIV infection, or other medicaments for diseases caused by abnormal expression of human heat shock protein 15.
- Nucleic acid sequence refers to an oligonucleotide, a nucleotide or a polynucleotide and a fragment or part thereof, and may also refer to a genomic or synthetic DNA or RM, they can be single-stranded or double-stranded, representing the sense or antisense strand.
- amino acid sequence refers to an oligopeptide, peptide, polypeptide or protein sequence and fragments or portions thereof.
- amino acid sequence in the present invention relates to the amino acid sequence of a naturally occurring protein molecule
- polypeptide or “protein” does not mean to limit the amino acid sequence to a complete natural amino acid related to the protein molecule .
- a protein or polynucleotide “variant” refers to an amino acid sequence having one or more amino acids or nucleotide changes, or a polynucleotide sequence encoding it. The changes may include deletions, insertions or substitutions of amino acids or nucleotides in the amino acid sequence or nucleotide sequence.
- Variants may have "conservative" changes in which the substituted amino acid has a structural or chemical property similar to the original amino acid, such as replacing isoleucine with leucine. Variants can also have non-conservative changes, such as replacing glycine with tryptophan.
- “Deletion” refers to the deletion of one or more amino acids or nucleotides in an amino acid sequence or nucleotide sequence.
- Insertion refers to an alteration in the amino acid sequence or nucleotide sequence that results in an increase in one or more amino acids or nucleotides compared to a naturally occurring molecule.
- Replacement refers to the replacement of one or more amino acids or nucleotides with different amino acids or nucleotides.
- Bioactivity refers to a protein that has the structure, regulation, or biochemical function of a natural molecule.
- immunologically active refers to the ability of natural, recombinant or synthetic proteins and fragments thereof to induce a specific immune response in appropriate animals or cells and to bind to specific antibodies.
- An "agonist” refers to a molecule that, when combined with human heat shock protein 15, can cause the protein to change, thereby regulating the activity of the protein.
- An agonist may include a protein, a nucleic acid, a carbohydrate, or any other molecule that can bind human heat shock protein 15.
- Antagonist refers to a molecule that, when combined with human heat shock protein 15, can block or regulate the biological or immunological activity of human heat shock protein 15.
- Antagonists and inhibitors can include proteins, nucleic acids, carbohydrates, or any other molecule that can bind human heat shock protein 15.
- Regular refers to a change in the function of human heat shock protein 15, including an increase or decrease in protein activity, a change in binding properties, and any other biological, functional, or immune properties of human heat shock protein 15.
- substantially pure is meant substantially free of other proteins, lipids, sugars or other substances with which it is naturally associated.
- Those skilled in the art can purify human heat shock protein 15 using standard protein purification techniques.
- Substantially pure human heat shock protein 15 produces a single main band on a non-reducing polyacrylamide gel.
- the purity of the human heat shock protein 15 polypeptide can be analyzed by amino acid sequence.
- Complementary refers to the natural binding of polynucleotides by base-pairing under conditions of acceptable salt concentration and temperature.
- sequence C-T-G-A
- complementary sequence G-A-C-T.
- the complementarity between two single-stranded molecules may be partial or complete.
- the degree of complementarity between nucleic acid strands has a significant effect on the efficiency and strength of hybridization between nucleic acid strands.
- “Homology” refers to the degree of complementarity and can be partially homologous or completely homologous.
- Partial homology refers to a partially complementary sequence that at least partially inhibits the hybridization of a completely complementary sequence to a target nucleic acid. Pay. The inhibition of such hybridization can be detected by performing hybridization (Southern blotting or Nor thern blotting, etc.) under conditions of reduced stringency. Substantially homologous sequences or hybridization probes can compete and inhibit the binding of completely homologous sequences to the target sequence under conditions of reduced stringency. This does not mean that the conditions of reduced stringency allow non-specific binding, because the conditions of reduced stringency require that the two sequences bind to each other as a specific or selective interaction.
- Percent identity refers to the percentage of sequences that are identical or similar in the comparison of two or more amino acid or nucleic acid sequences. The percent identity can be determined electronically, such as by the MEGALIGN program (Lasergene sof tware package, DNASTAR, Inc., Madi son Wis.). The MEGALIGN program can compare two or more sequences according to different methods such as the Clus ter method (Hi gg ins, DG and PM Sharp (1988) Gene 73: 237-244). 0 The Clus ter method will check the distance between all pairs by Groups of sequences are arranged in clusters. The clusters are then assigned in pairs or groups.
- sequence A and sequence B The percent identity between two amino acid sequences such as sequence A and sequence B is calculated by the following formula: The number of matching residues between sequence A and sequence X 100 The number of residues in sequence A-the number of spacer residues in sequence A Number of interval residues in a sequence B
- the percent identity between nucleic acid sequences can also be determined by the Clus ter method or by methods known in the art such as Jotun He in (Hein J., (1990) Methods in emzumology 183: 625-645). 0 "Similarity" means The degree of identical or conservative substitutions of amino acid residues at corresponding positions in the alignment of amino acid sequences.
- Amino acids used for conservative substitutions may include aspartic acid and glutamic acid; positively charged amino acids may include lysine and arginine; having an uncharged head group is Similar hydrophilic amino acids may include leucine, isoleucine and valine; glycine and alanine; asparagine and glutamine; serine and threonine; phenylalanine and tyrosine .
- Antisense refers to a nucleotide sequence that is complementary to a particular DM or RM sequence.
- Antisense strand refers to a nucleic acid strand that is complementary to a “sense strand.”
- Derivative refers to a chemical modification of HFP or a nucleic acid encoding it. This chemical modification may be a substitution of a hydrogen atom with a fluorenyl, acyl or amino group. Nucleic acid derivatives can encode polypeptides that retain the main biological properties of natural molecules.
- Antibody refers to a complete antibody molecule and its fragments, such as Fa,? ( ⁇ ') 2 and? It can specifically bind to the epitope of human heat shock protein 15.
- a “humanized antibody” refers to an antibody in which the amino acid sequence of a non-antigen binding region is replaced to become more similar to a human antibody, but still retains the original binding activity.
- isolated refers to the removal of a substance from its original environment (for example, its natural environment if it occurs naturally).
- a naturally occurring polynucleotide or polypeptide is not isolated when it is present in a living animal, but the same polynucleotide or polypeptide is separated from some or all of the substances that coexist with it in the natural system.
- Such a polynucleotide may be part of a certain vector, or such a polynucleotide or polypeptide may be part of a certain composition. Since the carrier or composition is not a component of its natural environment, they are still isolated.
- isolated refers to the separation of a substance from its original environment (if it is a natural substance, the original environment is the natural environment).
- polynucleotides and polypeptides in a natural state in a living cell are not isolated and purified, but the same polynucleotides or polypeptides are separated and purified if they are separated from other substances in the natural state .
- isolated human heat shock protein 15 means that human heat shock protein 15 is substantially free of other proteins, lipids, sugars or other substances with which it is naturally associated. Those skilled in the art can purify human heat shock protein 15 using standard protein purification techniques. Substantially pure polypeptides produce a single main band on a non-reducing polyacrylamide gel. The purity of the human heat shock protein 15 peptide can be analyzed by amino acid sequence.
- the present invention provides a new polypeptide, human heat shock protein 15, which basically consists of the amino acid sequence shown in SEQ ID NO: 2.
- the polypeptide of the present invention may be a recombinant polypeptide, a natural polypeptide, or a synthetic polypeptide, and preferably a recombinant polypeptide.
- the polypeptides of the present invention can be naturally purified products or chemically synthesized products, or can be produced from prokaryotic or eukaryotic hosts (eg, bacteria, yeast, higher plants, insects, and mammalian cells) using recombinant techniques. Depending on the host used in the recombinant production protocol, the polypeptide of the invention may be glycosylated, or it may be non-glycosylated. Polypeptides of the invention may also include or exclude starting methionine residues.
- the invention also includes fragments, derivatives and analogs of human heat shock protein 15.
- fragment refers to a polypeptide that substantially retains the same biological function or activity of the human heat shock protein 15 of the present invention.
- a fragment, derivative or analog of the polypeptide of the present invention may be: (I) a kind in which one or more amino acid residues are substituted with conservative or non-conservative amino acid residues (preferably conservative amino acid residues), and the substitution
- the amino acid may or may not be encoded by a genetic codon; or ( ⁇ ) a type in which a group on one or more amino acid residues is replaced by another group to include a substituent; or ( ⁇ ⁇ )
- Such a type in which the mature polypeptide is fused to another compound such as a compound that prolongs the half-life of the polypeptide, such as polyethylene glycol
- an additional amino acid sequence is fused into the mature polypeptide (Such as a leader sequence or a secreted sequence or a sequence used to purify this polypeptide or a protein sequence)
- fragments, 00 derivatives and analogs are considered to be within the knowledge of those skilled in the art.
- the present invention provides an isolated nucleic acid (polynucleotide), which basically consists of a polynucleotide encoding a polypeptide having the amino acid sequence of SEQ ID NO: 2.
- the polynucleotide sequence of the present invention includes the nucleotide sequence of SEQ ID NO: 1.
- the polynucleotide of the present invention is found from a cDNA library of human fetal brain tissue. It contains a full-length polynucleotide sequence of 1309 bases, and its open reading frames 314-712 encode 1 32 amino acids. According to the comparison of gene chip expression profiles, it was found that this polypeptide has a similar expression profile with human MHC-related HSP70 protein, and it can be inferred that the human heat shock protein 15 has similar functions to human MHC-related HSP70 protein.
- the polynucleotide of the present invention may be in the form of DM or RNA.
- DNA forms include cDNA, genomic DNA, or synthetic DNA.
- DM can be single-stranded or double-stranded.
- DNA can be coding or non-coding.
- the coding region sequence encoding a mature polypeptide may be the same as the coding region sequence shown in SEQ ID NO: 1 or a degenerate variant.
- a "degenerate variant" refers to a nucleic acid sequence encoding a protein or polypeptide having SEQ ID NO: 2 but having a sequence different from the coding region sequence shown in SEQ ID NO: 1 in the present invention.
- the polynucleotide encoding the mature polypeptide of SEQ ID NO: 2 includes: only the coding sequence of the mature polypeptide; the coding sequence of the mature polypeptide and various additional coding sequences; the coding sequence of the mature polypeptide (and optional additional coding sequences); Coding sequence.
- polynucleotide encoding a polypeptide refers to a polynucleotide comprising the polypeptide and a polynucleotide comprising additional coding and / or non-coding sequences.
- the present invention also relates to variants of the polynucleotides described above, which encode polypeptides or fragments, analogs and derivatives of the same amino acid sequences as the present invention.
- Variants of this polynucleotide can be naturally occurring allelic variants or non-naturally occurring variants. These nucleotide variants include substitution variants, deletion variants, and insertion variants.
- an allelic variant is an alternative form of a polynucleotide that may be a substitution, deletion, or insertion of one or more nucleotides, but does not substantially change the function of the polypeptide it encodes .
- the invention also relates to a polynucleotide that hybridizes to the sequence described above (having at least 50%, preferably 70% identity between the two sequences).
- the invention particularly relates to polynucleotides that can hybridize to the polynucleotides of the invention under stringent conditions.
- “strict conditions” means: (1) hybridization and elution at lower ionic strength and higher temperature, such as 0.2xSSC, 0.1% SDS, 60 ° C; or (2) Add denaturants during hybridization, such as 50% (v / v) formamide, 0.1% calf serum / 0.1% Fi co ll, 42 ° C, etc .; or (3) only between two sequences Hybridization occurs only when the identity is at least 95%, and more preferably 97%.
- the polypeptide encoded by the hybridizable polynucleotide has the same biological function and activity as the mature polypeptide shown in SEQ ID NO: 2.
- the invention also relates to nucleic acid fragments that hybridize to the sequences described above.
- nucleic acid fragment contains at least 10 nucleotides in length, preferably at least 20-30 nucleotides, more preferably at least 50-60 nucleotides, and most preferably at least 100 nucleotides. Nucleic acid fragments and above. Nucleic acid fragments can also be used in nucleic acid amplification techniques (such as PCR) to identify and / or isolate polynucleotides encoding human heat shock protein 15.
- polypeptides and polynucleotides in the present invention are preferably provided in an isolated form and are more preferably purified to homogeneity.
- the specific polynucleotide sequence encoding the human heat shock protein 15 of the present invention can be obtained by various methods.
- polynucleotides are isolated using hybridization techniques well known in the art. These techniques include, but are not limited to: 1) hybridization of probes to genomic or cDNA libraries to detect homologous polynucleotide sequences, and 2) antibody screening of expression libraries to detect cloned polynucleosides with common structural characteristics Acid fragments.
- the DNA fragment sequence of the present invention can also be obtained by the following methods: 1) isolating the double-stranded DNA sequence from the genomic DNA; 2) chemically synthesizing the DNA sequence to obtain the double-stranded DNA of the polypeptide.
- genomic DNA isolation is the least commonly used. Direct chemical synthesis of DNA sequences is often the method of choice.
- the more commonly used method is the isolation of cDNA sequences.
- the standard method for isolating the cDM of interest is to isolate mRNA from donor cells that overexpress the gene and perform reverse transcription to form a plasmid or phage cDNA library.
- the construction of cDNA libraries is also a common method (Sambrook, et al., Molecular Cloning, A Laboratory Manua 1, Cold Spruing Harbor Laboratory. New York, 1989).
- Commercially available cDNA libraries are also available, such as different cDNA libraries from Clontech. When polymerase reaction technology is used in combination, even very small expression products can be cloned.
- genes of the present invention can be screened from these cDM libraries by conventional methods. These methods include (but are not limited to): (l) DNA-DNA or DNA-RNA hybrids; (2) the presence or absence of marker gene functions; (3) measuring the level of transcripts of human heat shock protein 15; (4) Detection of gene-expressed protein products by immunological techniques or determination of biological activity. The above methods can be used singly or in combination.
- the probe used for hybridization is homologous to any part of the polynucleotide of the present invention, and its length is at least 10 nucleotides, preferably at least 30 nucleotides, more preferably At least 50 nucleotides, preferably at least 100 nucleotides.
- the length of the probe is usually within 2000 nucleotides, preferably within 1000 nucleotides.
- the probe used here is generally a DNA sequence chemically synthesized based on the gene sequence information of the present invention.
- the genes or fragments of the present invention can of course be used as probes.
- DNA probes can be labeled with radioisotopes, luciferin, or enzymes (such as alkaline phosphatase).
- immunological techniques such as Western blotting, radioimmunoprecipitation, and enzyme-linked immunosorbent assay (ELISA) can be used to detect the protein product of human heat shock protein 15 gene expression.
- ELISA enzyme-linked immunosorbent assay
- Amplification of DM / RM by PCR (Sa iki, et al. Sc ience 1985; 230: 1350-1354) are preferred for obtaining the genes of the invention.
- the RACE method RACE-rapid amplification of cDNA ends
- the primers used for PCR can be appropriately based on the polynucleotide sequence information of the present invention disclosed herein. Select and synthesize using conventional methods.
- the amplified DM / RNA fragment can be isolated and purified by conventional methods such as by gel electrophoresis.
- polynucleotide sequence of the gene of the present invention or various DM fragments and the like obtained as described above can be determined by a conventional method such as dideoxy chain termination method (Sanger e t al. PNAS, 1977, 74: 5463-5467). Such polynucleotide sequences can also be determined using commercial sequencing kits and the like. In order to obtain the full-length cDNA sequence, the sequencing must be repeated. Sometimes it is necessary to determine the cDNA sequence of multiple clones in order to splice into a full-length cDNA sequence.
- the present invention also relates to a vector comprising the polynucleotide of the present invention, and a host cell produced by genetic engineering using the vector of the present invention or directly using a human heat shock protein 15 coding sequence, and a method for producing a polypeptide of the present invention by recombinant technology.
- a polynucleotide sequence encoding human heat shock protein 15 can be inserted into a vector to constitute a recombinant vector containing the polynucleotide of the present invention.
- vector refers to bacterial plasmids, phages, yeast plasmids, plant cell viruses, mammalian cell viruses such as adenoviruses, retroviruses, or other vectors well known in the art.
- Vectors suitable for use in the present invention include, but are not limited to: T7 promoter-based expression vectors (Rosenberg, etal.
- any plasmid and vector can be used to construct a recombinant expression vector.
- An important feature of expression vectors is that they usually contain an origin of replication, a promoter, a marker gene, and translational regulatory elements.
- Methods known to those skilled in the art can be used to construct expression vectors containing DM sequences encoding human heat shock protein 15 and appropriate transcriptional / translational regulatory elements. These methods include in vitro recombinant DNA technology, DNA synthesis technology, in vivo recombination technology, etc. (Sambroook, etal. Molecuralar Cloning, a Labora tory Manua l, Cold Spring Harbor Labora tory. New York, 1989).
- the DNA sequence can be operably linked to an appropriate promoter in an expression vector to guide mRNA synthesis. Representative examples of these promoters are: the l ac or trp promoter of E.
- the expression vector also includes a ribosome binding site and a transcription terminator for translation initiation. Insertion of enhancer sequences into the vector will enhance its transcription in higher eukaryotic cells. Enhancers are cis-acting factors expressed by DM, usually about 10 to 300 base pairs, Acts on a promoter to enhance gene transcription. Illustrative examples include SV40 enhancers of 100 to 270 base pairs on the late side of the origin of replication, polyoma enhancers on the late side of the origin of replication, and adenoviral enhancers.
- the expression vector preferably contains one or more selectable marker genes to provide phenotypic traits for selection of transformed host cells, such as dihydrofolate reductase, neomycin resistance, and green for eukaryotic cell culture.
- selectable marker genes to provide phenotypic traits for selection of transformed host cells, such as dihydrofolate reductase, neomycin resistance, and green for eukaryotic cell culture.
- GFP fluorescent protein
- tetracycline or ampicillin resistance for E. coli.
- a polynucleotide encoding human heat shock protein 15 or a recombinant vector containing the polynucleotide can be transformed or transduced into a host cell to constitute a genetically engineered host cell containing the polynucleotide or the recombinant vector.
- the term "host cell” refers to a prokaryotic cell, such as a bacterial cell; or a lower eukaryotic cell, such as a yeast cell; or a higher eukaryotic cell, such as a mammalian cell. Representative examples are: E.
- coli Streptomyces
- bacterial cells such as Salmonella typhimurium
- fungal cells such as yeast
- plant cells insect cells
- fly S 2 or Sf 9 animal cells
- animal cells such as CH0, COS or Bowes s melanoma cells Wait.
- Transformation of a host cell with a DNA sequence described in the present invention or a recombinant vector containing the DNA sequence can be performed using conventional techniques well known to those skilled in the art.
- the host is a prokaryote such as E. coli
- competent cells capable of absorbing DNA can be harvested after exponential growth and used. & ( ⁇ 1 2 Treatment, procedure used are well known in the art. Alternatively, it is performed with MgC l 2. If desired method, electroporation can also be converted.
- the host is a eukaryote, the following optional DNA transfection methods: calcium phosphate co-precipitation, or conventional mechanical methods such as microinjection, electroporation, and liposome packaging.
- the polynucleotide sequence of the present invention can be used to express or produce recombinant human heat shock protein 15 (Scence, 1 984; 224: 1431). Generally there are the following steps:
- the medium used in the culture may be selected from various conventional mediums. Culture is performed under conditions suitable for host cell growth. After the host cells have grown to an appropriate cell density, the selected promoter is induced by a suitable method (such as temperature conversion or chemical induction), and the cells are cultured for a period of time.
- a suitable method such as temperature conversion or chemical induction
- the recombinant polypeptide may be coated in a cell, expressed on a cell membrane, or secreted outside the cell. If necessary, it can be separated by various separation methods using its physical, chemical and other properties. Isolate and purify the recombinant protein. These methods are well known to those skilled in the art. These methods include, but are not limited to: conventional renaturation treatment, protein precipitant treatment (salting out method), centrifugation, osmotic disruption, ultrasonic treatment, ultracentrifugation, molecular sieve chromatography (gel filtration), adsorption chromatography, ion Exchange chromatography, high performance liquid chromatography (HPLC) and various other liquid chromatography techniques and combinations of these methods.
- conventional renaturation treatment protein precipitant treatment (salting out method), centrifugation, osmotic disruption, ultrasonic treatment, ultracentrifugation, molecular sieve chromatography (gel filtration), adsorption chromatography, ion Exchange chromatography
- FIG. 1 is a comparison diagram of gene chip expression profiles of HSP70 protein related to human heat shock protein 15 and human C of the present invention.
- the upper graph is a graph of the expression profile of human heat shock protein 15, and the lower sequence is the graph of the expression profile of human MHC-related HSP70 protein.
- Figure 2 is a polyacrylamide gel electrophoresis image (SDS-PAGE) of human heat shock protein 15 isolated.
- 15KDa is the molecular weight of the protein.
- the arrow indicates the isolated protein band.
- Total human fetal brain RNA was extracted by one-step method with guanidine isothiocyanate / phenol / chloroform.
- Poly (A) raRNA was isolated from total RM using Quik mRNA I solat ion Kit (product of Qiegene). 2ug poly (A) mRNA is reverse transcribed to form cDNA.
- the Smart cDNA cloning kit purchased from Clontech) was used to insert the cDNA fragments into the multiple cloning site of pBSK (+) vector (Clontech) to transform DH5a. The bacteria formed a cDNA library.
- Dye terminate cycle react ion sequencing kit Perkin-Elraer
- ABI 377 automatic sequencer Perkin-Elmer
- the determined cDNA sequence was compared with the existing public DNA sequence database (Genebank), and it was found that the cDNA sequence of one of the clones 0203f 01 was new DNA.
- a series of primers were synthesized to determine the inserted cDNA fragments of the clone in both directions.
- CDNA was synthesized using fetal brain cell total RNA as a template and ol igo-dT as a primer for reverse transcription reaction. After purification with Qiagene's kit, the following primers were used for PCR amplification:
- Primerl 5,-GGAATCTTTTGTTTTTAAAATGTA-3, (SEQ ID NO: 3)
- Primer2 5'- TTTCACACAAGTTGGTTTTTATCG -3 '(SEQ ID NO: 4)
- Pr imerl is a forward sequence located at the 5th end of SEQ ID NO: 1, starting at lbp;
- Pr imer2 is the 3'-end reverse sequence in SEQ ID NO: 1.
- Amplification reaction conditions containing 50mmol / L KC1 in a reaction volume of 5 0 ⁇ 1, 10 hidden ol / L Tr i s-
- RNA extraction in one step [Anal. Biochem 1987, 162, 156-159] 0
- This method involves acid guanidinium thiocyanate-chloroform extraction. That is, the tissue is homogenized with 4M guanidine isothiocyanate-25mM sodium citrate, 0.2M sodium acetate (pH4.0), and 1 volume of phenol and 1/5 volume of chloroform-isoamyl alcohol (49: 1), centrifuge after mixing. Aspirate the aqueous layer, add isopropanol (0.8 vol) and centrifuge the mixture to obtain RNA precipitate. The obtained RM precipitate was washed with 70% ethanol, dried and dissolved in water.
- 32P-labeled probe (about 2 x 10 6 cpm / ml) was hybridized with a nitrocellulose membrane to which RNA was transferred at 42 ° C overnight in a solution containing 50% formamide-25raM KH 2 P0 4 (pH7. 4)-5 x SSC- 5 x Denhardt's solution and 200 ⁇ g / ml salmon sperm DNA. After hybridization, the filter was washed in 1 x SSC-0.1% SDS at 55 ° C for 30 min. Then, Phosphor Imager was used for analysis and quantification.
- Example 4 In vitro expression, isolation and purification of recombinant human heat shock protein 15 According to SEQ ID NO: 1 and the coding region sequence shown in FIG. 1, a pair of specific amplification primers is designed, and the sequences are as follows:
- Pr imer3 5,-CCCCATATGATGGGGTCTTGTGTTTCCAACTTC -3 '(Seq ID No: 5)
- Pr imer4 5'-CATGGATCCTTAGGACCAGACCAGCCTTCTTCT -3, (Seq ID No: 6)
- the 5 'ends of these two primers contain Ndel and BamHI digestion sites, respectively Points, followed by the coding sequences of the 5 ,, and 3 'ends of the gene of interest, respectively.
- the Ndel and BamHI restriction sites correspond to the expression vector plasmid pET-28b (+) (Novagen, Cat. No. 69865. 3) Selective endonuclease site.
- the pBS-0203f01 plasmid containing the full-length target gene was used as a template for the PCR reaction.
- the PCR reaction conditions were as follows: a total volume of 50 ⁇ l containing 10 pg of pBS-0203f 01 plasmid, primers Pr iraer-3 and Pr imer- 4 points, and lj was lOpmol, Advantage polymerase Mix (Clontech) 1 ⁇ 1. Cycle parameters: 94. C 20s, 60 ° C 30s, 68. C 2 min, a total of 25 cycles.
- Ndel and BamHI were used to double-digest the amplified product and plasmid pET-28 (+), respectively, and large fragments were recovered and ligated with T4 ligase.
- the ligation product was transformed into the coliform bacteria DH5 ⁇ by the calcium chloride method, and cultured overnight on LB plates containing kanamycin (final concentration 3 ( ⁇ g / ml)), and positive clones were selected by colony PCR method and sequenced. Positive clone with correct sequence (pET-0203f 01).
- the recombinant plasmid was transformed into E. coli BL21 (DE3) plySs (product of Novagen) by calcium chloride method.
- NH2-Met-Gly-Ser-Cys-Val-Ser-Asn-Phe-Glu-Val-Leu-Met-Trp-Thr-Val-COOH SEQ ID NO: 7
- the polypeptide is coupled to hemocyanin and bovine serum albumin to form a complex, respectively.
- hemocyanin and bovine serum albumin for methods, see: Avrameas, et al. Immunochemi s try, 1969; 6: 43. Rabbits were immunized with 1 ⁇ 2 g of the hemocyanin-polypeptide complex plus complete Freund's adjuvant, and 15 days later the hemocyanin-polypeptide complex plus incomplete Freund's adjuvant was used to boost immunity once.
- a titer plate coated with a 15 g / ml bovine serum albumin peptide complex was used as an ELISA to determine antibody titers in rabbit serum.
- Total IgG was isolated from antibody-positive rabbit sera using protein A-Sepharose.
- the peptide was bound to a cyanogen bromide-activated Sepharose4B column, and the total IgG Anti-peptide antibodies were isolated.
- Example 6 a polynucleotide fragment of the invention as the application of hybridization probes
- Suitable oligonucleotide fragments selected from the polynucleotides of the present invention are used as hybridization probes in a variety of ways.
- the probes can be used to hybridize to genomic or cDNA libraries of normal tissue or pathological tissue from different sources to It is determined whether it contains the polynucleotide sequence of the present invention and a homologous polynucleotide sequence is detected.
- the probe can be used to detect the polynucleotide sequence of the present invention or its homologous polynucleotide sequence in normal tissue or pathology. Whether the expression in tissue cells is abnormal.
- the purpose of this embodiment is to select a suitable oligonucleotide fragment from the polynucleotide SEQ ID NO: 1 of the present invention as a hybridization probe, and to identify whether some tissues contain the polynucleoside of the present invention by a filter hybridization method.
- Filter hybridization methods include dot blotting, Southern imprinting, Northern blotting, and copying methods. They all use the same steps to immobilize the polynucleotide sample to be tested on the filter.
- the sample-immobilized filter is first pre-hybridized with a probe-free hybridization buffer to saturate the non-specific binding site of the sample on the filter with the carrier and the synthesized polymer.
- the pre-hybridization solution is then replaced with a hybridization buffer containing labeled probes and incubated to hybridize the probes to the target nucleic acid.
- the unhybridized probes are removed by a series of membrane washing steps.
- This embodiment uses higher-intensity washing conditions (such as lower salt concentration and higher temperature), so that the hybridization background is reduced and only strong specific signals are retained.
- the probes used in this embodiment include two types: the first type of probes are oligonucleotide fragments that are completely the same as or complementary to the polynucleotide SEQ ID NO: 1 of the present invention; the second type of probes are partially related to the present invention
- the polynucleotide SEQ ID NO: 1 is the same or complementary oligonucleotide fragment.
- the dot blot method is used to fix the sample on the filter membrane. Under the high-intensity washing conditions, the first type of probe and the sample have the strongest hybridization specificity and are retained.
- oligonucleotide fragments from the polynucleotide SEQ ID NO: 1 of the present invention for use as hybridization probes should follow the following principles and several aspects to be considered:
- the preferred range of probe size is 18-50 nucleotides
- Those that meet the above conditions can be used as primary selection probes, and then further computer sequence analysis, including the primary selection probe and its source sequence region (ie, SEQ ID NO: 1) and other known genomic sequences and their complements Region for homology comparison, if the homology with non-target molecular region is greater than 85% After 15 consecutive bases are identical, the primary probe should not be used in general;
- Probe 1 which belongs to the first type of probe, is completely homologous or complementary to the gene fragment of SEQ ID NO: 1 (41Nt):
- Probe 2 (probe2), which belongs to the second type of probe, is equivalent to the replacement mutant sequence of the gene fragment of SEQ ID NO: 1 or its complementary fragment (41M):
- PBS phosphate buffered saline
- step 8-13 are only used when contamination must be removed, otherwise step 14 can be performed directly.
- NC membranes nitrocellulose membranes
- Two NC membranes are required for each probe, so that they can be used in the following experimental steps.
- the film was washed with high-strength conditions and strength conditions, respectively.
- the sample film was placed in a plastic bag, and 3-1 Omg pre-hybridization solution (1 OxDenhardt's; 6xSSC, 0.1 mg / ml CT DM (calf thymus DM)) was added. After the bag was sealed, 68. C. Water shake for 2 hours.
- 3-1 Omg pre-hybridization solution (1 OxDenhardt's; 6xSSC, 0.1 mg / ml CT DM (calf thymus DM)
- Gene microarrays or DNA microarrays are currently used in many national laboratories and pharmaceutical companies.
- the companies are starting to develop and develop a new technology. It refers to arranging a large number of target gene fragments in an orderly and high density on a carrier such as glass and silicon, and then using fluorescence detection and computer software to compare and analyze the data.
- a carrier such as glass and silicon
- fluorescence detection and computer software to compare and analyze the data.
- the polynucleotide of the present invention can be used as target DNA for gene chip technology for high-throughput research of new gene functions; search for and screen new tissue-specific genes, especially new genes related to diseases such as tumors; diagnosis of diseases, such as genetic diseases .
- the specific method steps have been reported in the literature.
- a total of 4,000 polynucleotide sequences of various full-length cDNAs are used as target DNA, including the polynucleotide of the present invention. They were amplified by PCR respectively. After purification, the amplified product was adjusted to a concentration of about 500 ng / ul, and spotted on a glass medium with a Cartesian 7500 spotter (purchased from Cartesian Company, USA). The distance between them is 280 ⁇ ⁇ . The spotted slides were hydrated, dried, and cross-linked in a purple diplomatic coupling instrument. After elution, the DNA was fixed on a glass slide to prepare a chip. The specific method steps have been reported in the literature in various ways. The post-spot processing steps of this embodiment are:
- Total mRNA was extracted from human mixed tissues and specific tissues (or stimulated cell lines) in one step, and the raRNA was purified with Ol igotex mRNA Midi Ki t (purchased from QiaGen).
- Cy3dUTP (5-Amino-propargyl-2'-deoxyuridine 5 j -triphate coupled to Cy3 f luorescent dye, purchased from Amersham Phamacia Biotech) was used to test the mRM of mixed human tissues, and the fluorescent reagent Cy5dUTP (5-Amino- propargyl -2'- deoxyur idine 5'-triphate coupl ed to Cy5 fluorescent dye, purchased from Amersham Phamacia Biotech, was used to label the mRNA of specific tissues (or stimulated cell lines) of the body, and probes were prepared after purification.
- Schena see: Schena,
- Solut ion (purchased from TeleChem) hybridization solution for 16 hours, washed with washing solution (lx SSC, 0.2% SDS) at room temperature, and then scanned with a ScanArray 3000 scanner (purchased from General Scanning, USA). Images were analyzed and processed with Imagene software (Biodiscovery, USA) to calculate the Cy3 / Cy5 ratio of each point.
- the above specific tissues are thymus, testis, muscle, spleen, lung, skin, thyroid, liver, PMA + Ecv304 cell line, PMA-Ecv304 cell line, non-starved L02 cell line, Arsenic stimulated the L02 cell line and prostate tissue for 1 hour.
- polypeptide of the present invention and the antagonists, agonists and inhibitors of the polypeptide can be directly used in the treatment of diseases, for example, it can treat malignant tumors, adrenal deficiency, skin diseases, various inflammations, HIV infections and immune diseases.
- heat shock proteins There are expressed sequences of heat shock proteins in the human genome. Many metabolic imbalances and body injuries, such as stroke, neurodegeneration, epilepsy and trauma, Down syndrome, etc., can cause the expression of heat shock proteins, the largest of which is HSP70.
- HSP70 gene is located in the gene region of the class I I I major tissue-related complex (MHC) and is related to MHC.
- MHC major tissue-related complex
- HSP70 protein is expressed in many types of cancer, and has certain effects on prognosis and drug resistance.
- HSP70 protein is related to the negative regulation of ubiquitin-proteasome network.
- the expression profile of the polypeptide of the present invention is consistent with the expression profile of human MHC-related HSP70 protein, and both have similar biological functions. It has various important functions in the body, mainly as a heat shock protein in various metabolic imbalances in the body, and functional disorders such as stroke, neurodegeneration, epilepsy and trauma, Down syndrome, cancer and other pathological conditions. The function and balance of the body play a protective role, and its abnormal expression is usually closely related to the above-mentioned cell metabolism, tissue dysfunction, and related diseases.
- human heat shock protein 15 of the present invention will make a variety of disease states Reduced body protection, these diseases can be stroke, neurodegeneration, epilepsy and trauma, Down syndrome, various tumors, embryonic developmental disorders, growth disorders, inflammation, immune diseases, these diseases include but not Limited to:
- Tumors of various tissues stomach cancer, liver cancer, lung cancer, esophageal cancer, breast cancer, leukemia, lymphoma, thyroid tumor, uterine fibroids, neuroblastoma, astrocytoma, ependymoma, glioblastoma, nerve Fibroma, colon cancer, melanoma, bladder cancer, uterine cancer, endometrial cancer, colon cancer, thymoma, nasopharyngeal cancer, laryngeal cancer, tracheal tumor, fibroid, fibrosarcoma, lipoma, liposarcoma embryonic development Disorders: congenital abortion, cleft palate, limb loss, limb differentiation disorder, atrial septal defect, neural tube defect, congenital hydrocephalus, congenital glaucoma or cataract, congenital deafness
- Growth and development disorders mental retardation, brain development disorders, skin, fat, and muscular dysplasia, bone and joint dysplasia, various metabolic defects, stunting, dwarfism, Cushing's syndrome Sexual retardation
- Inflammation chronic active hepatitis, sarcoidosis, polymyositis, chronic rhinitis, chronic gastritis, cerebrospinal multiple sclerosis, glomerulonephritis, myocarditis, cardiomyopathy, atherosclerosis, gastric ulcer, cervicitis, Various infectious inflammations
- Immune diseases Systemic lupus erythematosus, rheumatoid arthritis, bronchial asthma, urticaria, specific dermatitis, post-infection myocarditis, scleroderma, myasthenia gravis, Guillain-Barre syndrome, common variable immunodeficiency disease , Primary B-lymphocyte immunodeficiency disease, Acquired immunodeficiency syndrome
- the abnormal expression of the human heat shock protein 15 of the present invention will also produce certain hereditary, hematological diseases and the like.
- the polypeptide of the present invention and the antagonists, agonists and inhibitors of the polypeptide can be directly used in the treatment of diseases, for example, it can treat various diseases, especially stroke, neurodegeneration, epilepsy and trauma, Down syndrome, various tumors , Embryonic disorders, growth disorders, inflammation, immune diseases, certain hereditary, blood diseases, etc.
- the invention also provides methods for screening compounds to identify agents that increase (agonist) or suppress (antagonist) human heat shock protein 15.
- Agonists enhance human heat shock protein 15 to stimulate biological functions such as cell proliferation, while antagonists prevent and treat disorders related to excessive cell proliferation, such as various cancers.
- mammalian cells or a membrane preparation expressing human heat shock protein 15 can be cultured together with labeled human heat shock protein 15 in the presence of a drug. The ability of the drug to increase or block this interaction is then determined.
- Antagonists of human heat shock protein 15 include antibodies, compounds, receptor deletions, and the like that have been screened. Antagonists of human heat shock protein 15 can bind to human heat shock protein 15 and eliminate its function, or inhibit the production of the polypeptide, or bind to the active site of the polypeptide so that the polypeptide cannot function biologically Learn function.
- human heat shock protein 15 can be added to a bioanalytical assay to determine whether the compound is an antagonist by measuring the effect of the compound on the interaction between human heat shock protein 15 and its receptor. Receptor deletions and analogs that act as antagonists can be screened in the same manner as described above for screening compounds.
- Polypeptide molecules capable of binding to human heat shock protein 15 can be obtained by screening a random peptide library composed of various possible combinations of amino acids bound to a solid phase. When screening, 15 molecules of human heat shock protein should generally be labeled.
- the present invention provides a method for producing antibodies using polypeptides, and fragments, derivatives, analogs or cells thereof as antigens. These antibodies can be polyclonal or monoclonal antibodies.
- the invention also provides antibodies against human heat shock protein 15 epitopes. These antibodies include (but are not limited to): polyclonal antibodies, monoclonal antibodies, chimeric antibodies, single chain antibodies, Fab fragments, and fragments generated from Fab expression libraries.
- Polyclonal antibodies can be produced by injecting human heat shock protein 15 directly into immunized animals (such as rabbits, mice, rats, etc.). A variety of adjuvants can be used to enhance the immune response, including but not limited to Freund's adjuvant. .
- Techniques for preparing monoclonal antibodies to human heat shock protein 15 include, but are not limited to, hybridoma technology (Kohler and Miste in. Nature, 1975, 256: 495-497), triple tumor technology, and human beta-cell hybridoma technology , EBV-hybridoma technology, etc. Chimeric antibodies combining human constant regions and non-human variable regions can be produced using existing techniques (Morr et al, PNAS, 1985, 81: 6851). 0 Existing techniques for producing single-chain antibodies (US Pa t No. 4946778) can also be used to produce single chain antibodies against human heat shock protein 15.
- Anti-human heat shock protein 15 antibodies can be used in immunohistochemical techniques to detect human heat shock protein 15 in biopsy specimens.
- Monoclonal antibodies that bind to human heat shock protein 15 can also be labeled with radioisotopes and injected into the body to track their location and distribution. This radiolabeled antibody can be used as a non-invasive diagnostic method to locate tumor cells and determine whether there is metastasis.
- Antibodies can also be used to design immunotoxins against a specific bead site in the body.
- human heat shock protein 15 high affinity monoclonal antibodies can covalently bind to bacterial or plant toxins (such as diphtheria toxin, ricin, ormosine, etc.).
- a common method is to attack the amino group of the antibody with a thiol crosslinker such as SPDP, and toxin is bound to the antibody through the exchange of disulfide bonds.
- This hybrid antibody can be used to kill human heat shock protein 15 positive cells.
- the antibodies of the present invention can be used to treat or prevent diseases related to human heat shock protein 15. Administration of an appropriate amount of antibody can stimulate or block the production or activity of human heat shock protein 15.
- the invention also relates to a diagnostic test method for quantitative and localized detection of human heat shock protein 15 levels.
- Assays are well known in the art and include FISH assays and radioimmunoassays.
- the level of human heat shock protein 15 detected in the test can be used to explain the importance of human heat shock protein 15 in various diseases and to diagnose diseases in which human heat shock protein 15 plays a role.
- the polypeptide of the present invention can also be used for peptide mapping analysis.
- the polypeptide can be specifically cleaved by physical, chemical or enzyme, and can be analyzed by one-dimensional or two-dimensional or three-dimensional gel electrophoresis, and more preferably by mass spectrometry encoding
- the polynucleotide of human heat shock protein 15 can also be used for a variety of therapeutic purposes.
- Gene therapy technology can be used to treat abnormal cell proliferation, development, or metabolism caused by the non-expression or abnormal / inactive expression of human heat shock protein 15.
- Recombinant gene therapy vectors (such as viral vectors) can be designed to express mutated human heat shock protein 15 to inhibit endogenous human heat shock protein 15 activity.
- a mutated human heat shock protein 15 may be a shortened human heat shock protein 15 lacking a signaling domain. Although it can bind to downstream substrates, it lacks signaling activity. Therefore, the recombinant gene therapy vector can be used for treating diseases caused by abnormal expression or activity of human heat shock protein 15.
- Virus-derived expression vectors such as retrovirus, adenovirus, adenovirus-associated virus, herpes simplex virus, and parvovirus can be used to transfer polynucleotides encoding human heat shock protein 15 into cells. Methods for constructing a recombinant viral vector carrying a polynucleotide encoding human heat shock protein 15 can be found in the literature (Sambrook, et al.). In addition, recombinant polynucleotides encoding human heat shock protein 15 can be packaged into liposomes and transferred into cells.
- Methods for introducing a polynucleotide into a tissue or cell include: directly injecting the polynucleotide into a tissue in vivo; or introducing the polynucleotide into a cell in vitro through a vector (such as a virus, phage, or plasmid), and then transplanting the cell Into the body and so on.
- a vector such as a virus, phage, or plasmid
- Oligonucleotides including antisense RNA and DNA
- ribozymes that inhibit human heat shock protein 15 mRNA are also within the scope of the present invention.
- a ribozyme is an enzyme-like RNA molecule that can specifically decompose specific RNA. Its mechanism of action is that the ribozyme molecule specifically hybridizes with a complementary target RM to perform endonucleation.
- Antisense RNA, DNA and ribozymes can be obtained using any existing RNA or DM synthesis techniques, such as solid-phase phosphate amide chemical synthesis to synthesize oligonucleotides.
- Antisense RNA molecules can be obtained by in vitro or in vivo transcription of a DNA sequence encoding the RNA.
- This DNA sequence has been integrated downstream of the RNA polymerase promoter of the vector.
- it can be modified in a variety of ways, such as increasing the sequence length on both sides, and the linkage between ribonucleosides using phosphorothioate or peptide bonds instead of phosphodiester bonds.
- the polynucleotide encoding human heat shock protein 15 can be used for the diagnosis of diseases related to human heat shock protein 15.
- the polynucleotide encoding human heat shock protein 15 can be used to detect the expression of human heat shock protein 15 or the abnormal expression of human heat shock protein 15 in a disease state.
- DNA encoding human heat shock protein 15 The sequence can be used to hybridize biopsy specimens to determine the expression of human heat shock protein 15.
- Hybridization techniques include Southern blotting, Nor thern blotting, and in situ hybridization. These techniques and methods are publicly available and mature, and related kits are commercially available.
- polynucleotides of the present invention can be used as probes to be fixed on a microarray or a DNA chip (also referred to as a "gene chip") for analyzing differential expression analysis and gene diagnosis of genes in tissue.
- Human heat shock protein 15 specific primers can also be used to detect human heat shock protein 15 transcripts by RNA-polymerase chain reaction (RT-PCR) in vitro amplification.
- RT-PCR RNA-polymerase chain reaction
- Human heat shock protein 15 mutations include point mutations, translocations, deletions, recombinations, and any other abnormalities compared to the normal wild-type human heat shock protein 15 DNA sequence. Mutations can be detected using existing techniques such as Southern blotting, DM sequence analysis, PCR and in situ hybridization. In addition, mutations may affect protein expression. Therefore, Northern blotting and Western blotting can be used to indirectly determine whether a gene is mutated.
- the sequences of the invention are also valuable for chromosome identification.
- the sequence specifically targets a specific position on a human chromosome and can hybridize to it.
- specific sites for each gene on the chromosome need to be identified.
- only a few chromosome markers based on actual sequence data are available for marking chromosome positions.
- an important first step is to locate these DNA sequences on a chromosome.
- PCR primers (preferably 15-35bp) are prepared according to cDM, and the sequences can be located on chromosomes. These primers were then used for PCR screening of somatic hybrid cells containing individual human chromosomes. Only those heterozygous cells containing the human gene corresponding to the primer will produce amplified fragments.
- PCR localization of somatic hybrid cells is a quick way to localize DNA to specific chromosomes.
- oligonucleotide primers of the present invention in a similar manner, a set of fragments from a specific chromosome or a large number of genomic clones can be used to achieve sublocalization.
- Other similar strategies that can be used for chromosomal localization include in situ hybridization, chromosome pre-screening with labeled flow sorting, and pre-selection of hybridization to construct chromosome-specific cDNA libraries.
- Fluorescent in situ hybridization of cDNA clones with metaphase chromosomes allows precise chromosomal localization in one step.
- FISH Fluorescent in situ hybridization
- the physical location of the sequence on the chromosome can be correlated with the genetic map data. These data can be found, for example, in V. Mckusick, Mendelian Inheritance in Man (available online with Johns Hopk ins University Welch Medical Library). Linkage analysis can then be used to determine if genes and genes have been mapped to chromosomal regions Relationship between diseases.
- the difference in cDNA or genomic sequence between the affected and unaffected individuals needs to be determined. If a mutation is observed in some or all diseased individuals and the mutation is not observed in any normal individuals, the mutation may be the cause of the disease. Comparing affected and unaffected individuals usually involves first looking for structural changes in chromosomes, such as deletions or translocations that are visible at the chromosomal level or detectable with cDNA sequence-based PCR. According to the resolution capabilities of current physical mapping and gene mapping technology, the cDNA accurately mapped to the chromosomal region associated with the disease can be one of 50 to 500 potentially pathogenic genes (assuming 1 megabase mapping resolution) Capacity and each 20kb corresponds to a gene).
- the polypeptides, polynucleotides and mimetics, agonists, antagonists and inhibitors of the present invention can be used in combination with a suitable pharmaceutical carrier.
- suitable pharmaceutical carrier can be water, glucose, ethanol, salts, buffers, glycerol, and combinations thereof.
- the composition comprises a safe and effective amount of the polypeptide or antagonist, and carriers and excipients which do not affect the effect of the drug. These compositions can be used as drugs for the treatment of diseases.
- the invention also provides a kit or kit containing one or more containers containing one or more ingredients of the pharmaceutical composition of the invention.
- a kit or kit containing one or more containers containing one or more ingredients of the pharmaceutical composition of the invention.
- these containers there may be instructional instructions given by government agencies that manufacture, use, or sell pharmaceuticals or biological products, which prompts permission for administration on the human body by government agencies that produce, use, or sell.
- the polypeptides of the invention can be used in combination with other therapeutic compounds.
- the pharmaceutical composition can be administered in a convenient manner, such as by a topical, intravenous, intraperitoneal, intramuscular, subcutaneous, intranasal or intradermal route of administration.
- Human heat shock protein 15 is administered in an amount effective to treat and / or prevent a specific indication.
- the amount and range of human heat shock protein 15 administered to a patient will depend on many factors, such as the mode of administration, the health conditions of the person to be treated, and the judgment of the diagnostician.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU44048/01A AU4404801A (en) | 2000-03-07 | 2001-02-26 | A novel polypeptide - human heat shock protein 15 and the polynucleotide encoding said polypeptide |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00111919A CN1312275A (zh) | 2000-03-07 | 2000-03-07 | 一种新的多肽——人热休克蛋白15和编码这种多肽的多核苷酸 |
| CN00111919.2 | 2000-03-07 |
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| Publication Number | Publication Date |
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| WO2001074869A1 true WO2001074869A1 (fr) | 2001-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2001/000208 Ceased WO2001074869A1 (fr) | 2000-03-07 | 2001-02-26 | Nouveau polypeptide, proteine humaine de choc thermique 15, et polynucleotide codant pour ce polypeptide |
Country Status (3)
| Country | Link |
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| CN (1) | CN1312275A (zh) |
| AU (1) | AU4404801A (zh) |
| WO (1) | WO2001074869A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115192712A (zh) * | 2022-07-05 | 2022-10-18 | 四川大学华西第二医院 | Hsp抑制剂在制备胚胎神经系统畸形治疗的产品中的应用 |
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| EP2620446A1 (en) * | 2012-01-27 | 2013-07-31 | Laboratorios Del Dr. Esteve, S.A. | Immunogens for HIV vaccination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0712930A2 (en) * | 1994-11-21 | 1996-05-22 | Jeongsun Seo | A transgenic nonhuman animal model for diabetes |
| US5962262A (en) * | 1997-07-25 | 1999-10-05 | Incyte Pharmaceuticals, Inc. | Human heat shock 27 like protein |
| CN1246532A (zh) * | 1998-08-31 | 2000-03-08 | 复旦大学 | 人热休克关联蛋白编码序列、其编码的多肽及制备方法 |
-
2000
- 2000-03-07 CN CN00111919A patent/CN1312275A/zh active Pending
-
2001
- 2001-02-26 WO PCT/CN2001/000208 patent/WO2001074869A1/zh not_active Ceased
- 2001-02-26 AU AU44048/01A patent/AU4404801A/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0712930A2 (en) * | 1994-11-21 | 1996-05-22 | Jeongsun Seo | A transgenic nonhuman animal model for diabetes |
| US5962262A (en) * | 1997-07-25 | 1999-10-05 | Incyte Pharmaceuticals, Inc. | Human heat shock 27 like protein |
| CN1246532A (zh) * | 1998-08-31 | 2000-03-08 | 复旦大学 | 人热休克关联蛋白编码序列、其编码的多肽及制备方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192712A (zh) * | 2022-07-05 | 2022-10-18 | 四川大学华西第二医院 | Hsp抑制剂在制备胚胎神经系统畸形治疗的产品中的应用 |
| CN115192712B (zh) * | 2022-07-05 | 2023-08-01 | 四川大学华西第二医院 | Hsp抑制剂在制备胚胎神经系统畸形治疗的产品中的应用 |
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| AU4404801A (en) | 2001-10-15 |
| CN1312275A (zh) | 2001-09-12 |
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