WO2001075032A2 - Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 10, et polynucleotide codant pour ce polypeptide - Google Patents
Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 10, et polynucleotide codant pour ce polypeptide Download PDFInfo
- Publication number
- WO2001075032A2 WO2001075032A2 PCT/CN2001/000394 CN0100394W WO0175032A2 WO 2001075032 A2 WO2001075032 A2 WO 2001075032A2 CN 0100394 W CN0100394 W CN 0100394W WO 0175032 A2 WO0175032 A2 WO 0175032A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polypeptide
- polynucleotide
- human
- synthetase
- phosphoribosylglycine
- Prior art date
Links
Classifications
-
- 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
- C12N9/93—Ligases (6)
Definitions
- the present invention belongs to the field of biotechnology. Specifically, the present invention describes a novel polypeptide, human phosphoribosylglycine synthetase 10, and a polynucleotide sequence encoding the polypeptide. The invention also relates to methods and applications for preparing such polynucleotides and polypeptides.
- Nucleotide biosynthesis is an extremely important process for all cells, because cells cannot take up nucleotides from the surrounding medium, but nucleotides are necessary precursors for the synthesis of RM and DNA.
- the metabolic degradation pathway of nucleotides is also important for organisms. Some genetic defects cause these pathways to be blocked and cause severe illness.
- Phosphoribosylglycosamine synthetase catalyzes the second step of de novo biosynthesis of purine, linking 5-phosphate ribosamine to glycine to form 5'-phosphate ribosylglycinamide. This reaction is ATP-dependent.
- GATS is a single-function enzyme (encoded by the pu rD gene); in yeast, it forms a bifunctional enzyme (formed with glycylamide nucleotide cyclase ligase (AI RS)) ADE5, 7 genes); in higher eukaryotes, the above two and ribophosphate glycylamide formyltransferase (GART) constitute a trifunctional enzyme (GARS-AI RS-GART).
- the GARS sequence is highly conserved, and its characteristic conserved sequences are: R-F- G-D-P-E-x- [QM]
- the human phosphoribosylglycine synthetase 10 protein plays an important role in regulating important functions of the body, such as cell division and embryonic development, and it is believed that a large number of proteins are involved in these regulatory processes. Therefore, there is always a need to identify Many human phosphoribosylglycine synthetase 10 proteins are involved in these processes, especially the amino acid sequence of this protein is identified. Isolation of the new human phosphoribosylglycine synthetase 10 protein encoding gene also provides a basis for research to determine the role of this protein in health and disease states. This protein may form the basis for developing diagnostic and / or therapeutic drugs for diseases The coding DNA is very important. Object of the invention
- An object of the present invention is to provide an isolated novel polypeptide, human phosphoribosylglycine synthetase 10, and fragments, analogs and derivatives thereof.
- 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 phosphoribosylglycine synthetase 10.
- Another object of the present invention is to provide a genetically engineered host cell containing a polynucleotide encoding a human phosphoribosylglycine synthetase 10.
- Another object of the present invention is to provide mimetic compounds, antagonists, agonists, and inhibitors directed to the polypeptide of the present invention, human phosphoribosylglycine synthetase 10.
- Another object of the present invention is to provide a method for diagnosing and treating diseases related to abnormalities of human phosphoribosylglycine synthetase 10. Summary of invention
- the present invention relates to an isolated polypeptide, which is of human origin, and includes: a polypeptide having the amino acid sequence of SEQ ID D. 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 the group consisting of: (a) a sequence having positions 151-141 in SEQ ID NO: 1; and (b) having a sequence 1- in SEQ ID NO: 1 718-bit sequence.
- the invention further relates to a vector, in particular an expression vector, containing the polynucleotide of the invention; a host cell genetically engineered with the vector, including a transformed, transduced or transfected host cell; and a method comprising culturing said Host cell and method of preparing the polypeptide of the present invention by recovering the expression product.
- a vector in particular an expression vector, containing the polynucleotide of the invention
- a host cell genetically engineered with the vector including a transformed, transduced or transfected host cell
- a method comprising culturing said 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 phosphoribosylglycine synthetase 10 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 phosphoribosylglycine synthetase 10 protein in vitro, which comprises detecting a mutation in the polypeptide or a sequence encoding a polynucleotide thereof in a biological sample. Or detecting the amount or biological activity of a polypeptide of the invention in 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 use of the polypeptide and / or polynucleotide of the present invention in the preparation of a medicament for treating cancer, developmental disease or immune disease or other diseases caused by abnormal expression of human phosphoribosylglycine synthetase 10 .
- FIG. 1 is a comparison diagram of gene chip expression profiles of human phosphoribosylglycine synthetase 10 and human phosphoribosylglycine synthetase 9 according to the present invention.
- the upper graph is a graph of the expression profile of human phosphoribosylglycine synthase 10
- the lower graph is the graph of the expression profile of human phosphoribosylglycine synthetase 9.
- 1 indicates fetal kidney
- 2 indicates fetal large intestine
- 3 indicates fetal small intestine
- 4 indicates fetal muscle
- 5 indicates fetal brain
- 6 indicates fetal bladder
- 7 indicates non-starved L02
- 8 indicates L02 +, l hr, As 3+
- 9 ECV304 PMA- 10
- ECV 304 PMA + 1 1 fetal liver, 12 normal liver, 1 3 thyroid, 1 4 skin
- 1 8 fetal Spleen 19 indicates the spleen
- 20 indicates the prostate
- 21 indicates the fetal heart
- 22 indicates the heart
- 23 indicates muscle
- 24 indicates the testis
- 25 indicates the fetal thymus
- 26 indicates the thymus.
- Figure 2 shows the polyacrylamide gel electrophoresis (SDS-PAGE) of the isolated human phosphoribosylglycine synthetase 10.
- OkDa is the molecular weight of the protein.
- the arrow indicates the isolated protein band.
- Nucleic acid sequence means an oligonucleotide, a nucleotide or a polynucleotide and a fragment or part thereof, and may also be Refers to genomic or synthetic DNA or RNA, which 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, such "polypeptide” or “protein” does not mean to limit the amino acid sequence to a complete natural amino acid related to the protein molecule .
- a “variant" of a protein or polynucleotide 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 can have "conservative" changes, in which the amino acid substituted 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 means that a change in the amino acid sequence or nucleotide sequence results in an increase in one or more amino acids or nucleotides compared to a molecule that exists in nature.
- 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 and to bind specific antibodies in a suitable animal or cell.
- An "agonist” refers to a molecule that, when combined with human phosphoribosylglycine synthetase 10, causes a change in the protein to regulate the activity of the protein.
- An agonist may include a protein, a nucleic acid, a carbohydrate, or any other molecule that binds to human phosphoribosylglycine synthetase 10.
- Antagonist refers to a biological or immunological activity that can block or regulate human phosphoribosylglycine synthetase 10 when combined with human phosphoribosylglycine synthase 10 Molecule.
- Antagonists and inhibitors may include proteins, nucleic acids, carbohydrates, or any other molecule that can bind human phosphoribosylglycine synthetase 10.
- Regular refers to a change in the function of human phosphoribosylglycine synthetase 10, including an increase or decrease in protein activity, a change in binding characteristics, and any other biological properties of human phosphoribosylglycine synthetase 10 , Functional or immune properties.
- substantially pure ' means substantially free of other proteins, lipids, sugars or other substances with which it is naturally associated.
- Those skilled in the art can purify human phosphoribosylglycine synthetase 1 using standard protein purification techniques. 0. Basically pure human phosphoribosylglycine synthetase 10 can produce a single main band on a non-reducing polyacrylamide gel. The purity of human phosphoribosylglycine synthetase 10 can be analyzed by amino acid sequence.
- “Complementary” or “complementary” refers to polynucleotides that naturally bind through base-pairing under conditions of acceptable salt concentration and temperature.
- the sequence "CTGA” can be combined with the complementary sequence "GAC-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 hybridization of a fully complementary sequence to a target nucleic acid. This inhibition of hybridization can be detected by performing hybridization (Southern imprinting or Nor thern blotting, etc.) under conditions of reduced stringency.
- Substantially homologous sequences or hybridization probes can compete and inhibit the binding of fully 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 the same or similar in a comparison of two or more amino acid or nucleic acid sequences. The percent identity can be determined electronically, such as through 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 (Higgins, DG and PM Sharp (1988) Gene 73: 237-244). The Cl us ter method checks the distance between all pairs The groups of sequences are arranged into clusters. Each cluster is then allocated in pairs or groups. The percent identity between two amino acid sequences such as sequence A and sequence B is calculated by
- Similarity refers to 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 substitution for example, negatively charged amino acids 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 DNA or RNA sequence.
- Antisense strand refers to a nucleic acid strand that is complementary to a “sense strand.”
- Derivative refers to HFP or a chemical modification of its nucleic acid. 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? ⁇ , which can specifically bind to the epitope of human phosphoribosylglycine synthetase 10.
- 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 is naturally occurring).
- a naturally-occurring polynucleotide or polypeptide is not isolated when it is present in a living thing, 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 part 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 phosphoribosylglycine synthetase 10 refers to human phosphoribosylglycine synthetase 10 which is substantially free of other proteins, lipids, sugars, or other substances naturally associated with it.
- Those skilled in the art can purify human phosphoribosylglycine synthetase 10 using standard protein purification techniques. Substantially pure polypeptides can produce a single main band on a non-reducing polyacrylamide gel. The purity of human phosphoribosylglycine synthetase 10 polypeptide can be analyzed by amino acid sequence.
- the present invention provides a new polypeptide, human phosphoribosylglycine synthetase 10, which is basically composed 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.
- polypeptide of the invention may be glycosylated, or it may be non-glycosylated.
- the polypeptides of the invention may also include or exclude the initial methionine residue.
- the invention also includes fragments, derivatives and analogs of human phosphoribosylglycine synthetase 10.
- fragment refers to a polypeptide that substantially maintains the same biological function or activity of the human phosphoribosylglycine synthetase 10 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 the genetic code; or ( ⁇ ) such a A group on one or more amino acid residues in the group is substituted by another group to include a substituent; or
- (III) a type in which the mature polypeptide is fused with another compound (such as a compound that extends the half-life of the polypeptide, such as polyethylene glycol); or (IV) a type in which the additional amino acid sequence is fused into the mature polypeptide to form (Such as a leader sequence or a secreted sequence or a sequence used to purify this polypeptide or a protein sequence).
- another compound such as a compound that extends the half-life of the polypeptide, such as polyethylene glycol
- IV a type in which the additional amino acid sequence is fused into the mature polypeptide to form (Such as a leader sequence or a secreted sequence or a sequence used to purify this polypeptide or a protein sequence).
- 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 polynucleotide sequence of 718 bases in length and its open reading frame 151-411 encodes 86 amino acids.
- this polypeptide has a similar expression profile to human phosphoribosylglycine synthetase 9 and it can be inferred that the human phosphoribosylglycine synthetase 10 is similar to human phosphoribosylglycine synthetase 9 Functions.
- the polynucleotide of the present invention may be in the form of DNA or RNA.
- DM forms include cDNA, genomic DNA, or synthetic DNA.
- DNA 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 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 invention also relates to variants of the polynucleotides described above, which encode polypeptides or fragments, analogs and derivatives of polypeptides having the same amino acid sequence as the 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 present invention particularly relates to the present invention under strict conditions.
- the polynucleotide is a polynucleotide that can hybridize.
- “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) added during hybridization Use a denaturant, such as 50% (v / v) formamide, 0.1% calf serum / 0.1% Ficoll, 42 ° C, etc .; or (3) the identity between the two sequences is at least 95% Above, more preferably 97% or more hybridization occurs.
- the polypeptide encoded by the hybridizable polynucleotide has the same biological function and activity as the mature polypeptide shown in SEQ ID NO: 2.
- nucleic acid fragments that hybridize to the sequences described above.
- a "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 nuclei. Glycylic acid or more. Nucleic acid fragments can also be used in nucleic acid amplification techniques, such as PCR, to identify and / or isolate polynucleotides encoding human phosphoribosylglycine synthetase 10.
- 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 phosphoribosylglycine synthetase 10 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 DM 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 cDNA of interest is to isolate mRM from donor cells that overexpress the gene and perform reverse transcription to form a plasmid or phage cDNA library.
- Various methods have been used to extract mRNA, and kits are also commercially available (Qiagene).
- the construction of cDNA libraries is also a common method (Sambrook, et al., Molecular Cloning, A Laboratory Manual, Cold Spring 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 selected from these cDNA libraries by conventional methods. These methods include (but are not limited to): (l) DNA-DNA or DNA-RNA hybridization; (2) the presence or absence of a marker gene function; (3) determination of the level of the transcript of human phosphoribosylglycine synthetase 10 (4) Detecting protein products expressed by genes through immunological techniques or measuring biological activity. The above methods can be used alone or in combination.
- the probe used for hybridization is any part of the polynucleotide of the present invention Homologous, at least 10 nucleotides in length, preferably at least 30 nucleotides, more preferably at least 50 nucleotides, and most preferably at least 100 nucleotides.
- the length of the probe is usually within 2000 nucleotides, preferably within 1000 nucleotides.
- the probe used here is usually 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 protein products expressed by the human phosphoribosylglycine synthetase 10 gene expression protein.
- ELISA enzyme-linked immunosorbent assay
- a method using DNA technology to amplify DNA / RNA is preferably used to obtain the gene of the present invention.
- the RACE method RACE-rapid cDNA end rapid amplification method
- 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 DNA fragments and the like obtained as described above can be measured by a conventional method such as dideoxy chain termination method (Sanger et 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, sequencing needs to 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 that is genetically engineered using the vector of the present invention or directly using the human phosphoribosylglycine synthetase 10 coding sequence, and the recombinant technology to produce the described Polypeptide method.
- a polynucleotide sequence encoding human phosphoribosylglycine synthetase 10 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 expressed in bacteria (Rosenberg, et al.
- 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.
- eukaryotic promoters include the CMV immediate early promoter, HSV thymidine kinase promoter, the early and late SV40 Promoters, retroviral LTRs, and other known promoters that control the expression of genes in prokaryotic or eukaryotic cells or their viruses.
- 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 for DNA expression, usually about 10 to 300 base pairs, which act on promoters 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 phosphoribosylglycine synthetase 10 or a recombinant vector containing the polynucleotide can be transformed or transduced into a host cell to form a genetically engineered host 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.
- Escherichia coli, Streptomyces bacterial cells such as Salmonella typhimurium
- fungal cells such as yeast
- plant cells insect cells
- fly S2 or Sf9 animal cells
- animal cells such as CH0, COS or Bowes melanoma cells.
- 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 the exponential growth phase and treated with the CaCl 2 method. The steps used are well known in the art. Alternatively, M g Cl 2 is used. If necessary, transformation can also be performed by electroporation.
- the host is a eukaryotic organism, the following DNA transfection methods can be used: calcium phosphate co-precipitation method, or conventional mechanical methods such as microinjection, electroporation, and liposome packaging.
- the polynucleotide sequence of the present invention can be used for expression or production Recombinant human phosphoribosylglycine synthetase 10 (Scence, 1984; 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, the recombinant protein can be isolated and purified by various separation methods using its physical, chemical and other properties. 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, high performance liquid
- polypeptides of the present invention as well as antagonists, agonists and inhibitors of the polypeptides, can be directly used in the treatment of diseases, for example, they can treat malignant tumors, adrenal deficiency, skin diseases, various types of inflammation, HIV infection, and immune diseases.
- nucleotides The biosynthesis of nucleotides is an extremely important process for all cells, because cells cannot take up nucleotides from the surrounding medium, but nucleotides are necessary precursors for the synthesis of RNA and DNA.
- the metabolic degradation pathway of nucleotides is also important for organisms. Some genetic defects cause these pathways to be blocked and cause severe illness.
- Phosphoribosylglycine synthetase (GARS) catalyzes the second step of de novo biosynthesis of purine organisms. Linking 5-phosphate ribosamine to glycine to form 5'-phosphate ribosylglycinamide is an ATP-dependent reaction.
- human phosphoribosylglycine synthetase 10 of the present invention will produce various diseases, especially purine and pyrimidine metabolism deficiency diseases, amino acid metabolism disorders, organic acidemia, tumors, embryonic development disorders, growth Developmental disorders, these diseases include but are not limited to: Purine and Pyrimidine Metabolism Defects: Abnormal purine metabolism such as Ray-niney syndrome, xanthineuria, abnormal pyrimidine metabolism such as orotic aciduria, adenine deaminase deficiency
- Amino acid metabolism deficiency diseases Phenylketonuria, tyrosine metabolism deficiency diseases such as albinism, sulfur amino acid metabolism deficiency disease, tryptophanemia, branch amino acid metabolism deficiency disease, glycineemia, proline and hydroxyproline Acid metabolism deficiency disease, glutamate metabolism deficiency disease, urea cycle metabolism deficiency disease, histidine metabolism deficiency disease, lysine metabolism deficiency disease,
- Organic acidemia propionic acidemia, methylmalonic aciduria, isovalerate, combined carboxylase deficiency, glutarate type I
- Fetal developmental disorders congenital abortion, limb loss, limb differentiation disorder, cryptorchidism, congenital inguinal hernia, double uterus, vaginal atresia, atrial septal defect, ventricular septal defect, pulmonary artery stenosis, neural tube defect, congenital glaucoma or Cataract, congenital deafness
- Growth and development disorders mental retardation, cerebral palsy, brain development disorders, mental retardation, familial cerebral nucleus dysplasia syndrome, strabismus, skin, fat and muscular dysplasia such as congenital skin laxity, premature aging Disease, congenital keratosis, various metabolic defects such as various amino acid metabolic defects, stunting, dwarfism, sexual retardation
- Tumors of various tissues gastric cancer, liver cancer, lung cancer, esophageal cancer, breast cancer, leukemia, lymphoma, thyroid tumor, uterine fibroids, neuroblastoma, astrocytoma, ependymoma, glioblastoma, Colon cancer, melanoma, adrenal cancer, bladder cancer, bone cancer, osteosarcoma, myeloma, bone marrow cancer, brain cancer, uterine cancer, endometrial cancer, gallbladder cancer, thymic tumor, nasal cavity and sinus cancer, nasopharyngeal cancer, Laryngeal cancer, tracheal tumor, fibroma, fibrosarcoma, lipoma, liposarcoma, leiomyoma
- human phosphoribosylglycine synthetase 10 in the present invention will also produce certain hereditary, hematological and immune system diseases.
- the invention also provides methods for screening compounds to identify agents that increase (agonist) or suppress (antagonist) human phosphoribosylglycine synthetase 10.
- Agonists enhance biological functions such as human phosphoribosylglycine synthetase 10 to stimulate cell proliferation, while antagonists prevent and treat disorders related to excessive cell proliferation, such as various cancers.
- mammalian cells or membrane preparations expressing human phosphoribosylglycine synthetase 10 can be cultured together with labeled human phosphoribosylglycine synthase 10 in the presence of a drug. The ability of the drug to increase or block this interaction is then determined.
- Antagonists of human phosphoribosylglycine synthetase 10 include antibodies, compounds, receptor deletions, and the like that have been screened. Antagonists of human phosphoribosylglycine synthetase 10 can bind to human phosphoribosylglycine synthetase 10 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 perform biological functions.
- human phosphoribosylglycine synthetase 10 When screening compounds as antagonists, human phosphoribosylglycine synthetase 10 can be added to a bioanalytical assay by determining the effect of the compound on the interaction between human phosphoribosylglycine synthetase 10 and its receptor. Determine if the compound is an antagonist. 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 phosphoribosylglycine synthetase 10 can be obtained by screening a random peptide library composed of various possible combinations of amino acids bound to a solid phase. Human phosphoribosylglycine synthetase
- 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 directed against human phosphoribosylglycine synthetase 10 epitopes. These antibodies include (but are not limited to): polyclonal antibodies, monoclonal antibodies, chimeric antibodies, single chain antibodies, Fab fragments, and fragments produced by Fab expression libraries.
- Polyclonal antibodies can be produced by injecting human phosphoribosylglycine synthetase 10 directly into immunized animals (such as rabbits, mice, rats, etc.).
- 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 'S adjuvant and so on.
- Techniques for preparing monoclonal antibodies to human phosphoribosylglycine synthetase 10 include, but are not limited to, hybridoma technology (Kohler and Milstein. Nature, 1975, 256: 495-497), triple tumor technology, and human B-cell hybridoma technology , EBV-hybridoma technology, etc.
- Chimeric antibodies that bind human constant regions to non-human-derived variable regions can be produced using existing techniques (Morrison et al, PNAS, 1985, 81: 6851).
- the existing technology for producing single chain antibodies U.S. Pat No. 4946778, can also be used to produce single chain antibodies against human phosphoribosylglycine synthetase 10.
- Antibodies against human phosphoribosylglycine synthetase 10 can be used in immunohistochemical techniques to detect human phosphoribosylglycine synthetase 10 in biopsy specimens.
- Monoclonal antibodies that bind to human phosphoribosylglycine synthetase 10 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 that target a particular part of the body.
- human phosphoribosylglycine synthetase 10 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 an antibody with a thiol cross-linking agent such as SPDP and bind the toxin to the antibody through the exchange of disulfide bonds.
- This hybrid antibody can be used to kill human phosphoribosylglycine synthase Positive cells.
- the antibodies in the present invention can be used to treat or prevent diseases related to human phosphoribosylglycine synthetase 10.
- Administration of appropriate doses of antibodies can stimulate or block human phosphoribosylglycine synthetase 10 Production or activity.
- the invention also relates to a diagnostic test method for quantitatively and locally detecting the level of human phosphoribosylglycine synthetase 10.
- tests are well known in the art and include F I SH assays and radioimmunoassays.
- the level of human phosphoribosylglycine synthase 10 detected in the test can be used to explain the importance of human phosphoribosylglycine synthetase 10 in various diseases and to diagnose human phosphoribosylglycine amide synthesis Diseases where enzyme 10 works.
- polypeptide of the present invention can also be used for peptide mapping analysis.
- the polypeptide can be specifically cleaved by physical, chemical or enzymatic analysis, and subjected to one-dimensional or two-dimensional or three-dimensional gel electrophoresis analysis, and more preferably mass spectrometry analysis.
- Polynucleotides encoding human phosphoribosylglycine synthetase 10 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 phosphoribosylglycine synthetase 10. Recombinant gene therapy vectors (such as viral vectors) can be designed to express mutated human phosphoribosylglycine synthetase 10 to inhibit endogenous human phosphoribosylglycine synthetase 10 activity.
- a mutated human phosphoribosylglycine synthetase 10 may be a shortened human phosphoribosylglycine synthetase 10, which lacks a signaling domain. Although it can bind to downstream substrates, it lacks Signaling activity. Therefore, recombinant gene therapy vectors can be used to treat diseases caused by abnormal expression or activity of human phosphoribosylglycine synthetase 10.
- Expression vectors derived from viruses such as retrovirus, adenovirus, adenovirus-associated virus, herpes simplex virus, parvovirus, etc.
- a recombinant polynucleotide encoding human phosphoribosylglycine synthetase 10 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 phosphoribosylglycine synthase 10 mRNA are also within the scope of the present invention.
- a ribozyme is an enzyme-like RNA molecule that can specifically decompose a specific RNA. Its mechanism of action is that the ribozyme molecule specifically hybridizes with a complementary target RNA for endonucleation.
- Antisense RNA and DM and ribozymes can be obtained by any existing RNA or DNA synthesis technology. For example, the technology for the synthesis of oligonucleotides by solid-phase phosphoramide synthesis has been widely used.
- Antisense RNA molecules can be obtained by in vitro or in vivo transcription of a DNA sequence encoding the RM. This DNA sequence has been integrated downstream of the vector's RNA polymerase promoter. To increase the stability of nucleic acid molecules, they can be modified in a variety of ways. For example, if the sequence length on both sides is increased, the linkage between ribonucleosides should use phosphorothioate or peptide bonds instead of phosphodiester bonds.
- a polynucleotide encoding human phosphoribosylglycine synthetase 10 can be used for the diagnosis of diseases related to human phosphoribosylglycine synthetase 10.
- a polynucleotide encoding human phosphoribosylglycine synthetase 10 can be used to detect the expression of human phosphoribosylglycine synthetase 10 or abnormal expression of human phosphoribosylglycine synthetase 10 in a disease state.
- a DNA sequence encoding human phosphoribosylglycine synthetase 10 can be used to hybridize biopsy specimens to determine the expression of human phosphoribosylglycine synthetase 10.
- Hybridization techniques include Sou thern blotting, Northern blotting, in situ hybridization, and the like. These techniques and methods are publicly available and mature, and related kits are commercially available. Part or all of the polynucleotides of the present invention can be used as probes to be fixed on a microarray (Microray) or a DNA chip (also known as a "gene chip") for analyzing differential expression analysis of genes and genes in tissues diagnosis.
- RNA-polymerase chain reaction using human phosphoribosylglycine synthetase 10 specific primers for in vitro amplification can also detect transcripts of human phosphoribosylglycine synthetase 10.
- Human phosphoribosylglycine synthase 10 mutations include point mutations, translocations, deletions, recombinations, and any other abnormalities compared to the normal wild-type human phosphoribosylglycine synthetase 10 DNA sequence. Mutations can be detected using existing techniques such as Southern blotting, DNA sequence analysis, PCR and in situ hybridization. In addition, mutations may affect protein expression. Therefore, Nor thern blotting and Western blotting can be used to indirectly determine whether a gene is mutated.
- sequences of the invention are also valuable for chromosome identification. This sequence will specifically target a specific position on a human chromosome and can hybridize to it. Currently, specific sites for each gene on the chromosome need to be identified. Currently, only a few chromosome markers based on actual sequence data (repeating polymorphisms) are available for marking chromosome positions. According to the present invention, in order to associate these sequences with disease-related genes, 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 by a similar method, 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 hybrid pre-selection to construct chromosome-specific cDNA libraries.
- Fluorescent in situ hybridization (FISH) of cDNA clones to metaphase chromosomes allows precise chromosomal localization in one step.
- FISH fluorescent in situ hybridization
- the difference in cDM 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 the chromosomes, such as deletions or translocations that are visible at the chromosomal level or detectable with cDM 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 phosphoribosylglycine synthetase 10 is administered in an amount effective to treat and / or prevent a specific indication.
- the amount and range of human phosphoribosylglycine synthetase 10 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. Examples
- RNA Human fetal brain total RNA was extracted by one-step method with guanidine isothiocyanate / phenol / chloroform.
- Poly (A) mRNA was isolated from total RNA using the QuikmRNA Isolation Kit (Qiegene). 2ug poly (A) mRNA is reverse transcribed to form cDNA.
- a Smart cDNA cloning kit purchased from Clontech
- Dye terminate cycle reaction sequencing kit Perkin-Elmer company
- ABI 377 automatic sequencer Perkin-Elmer company
- the determined cDNA sequence was compared with the existing public DM sequence database (Genebank) It was found that the cDNA sequence of one of the clones 0550h01 was new DNA.
- a series of primers were synthesized to determine the inserted cDNA fragment of the clone in both directions.
- Example 2 Cloning and Encoding of Human Phosphoribose by RT-PCR
- the gene of Glycine Synthetase 10 uses fetal brain cell total RNA as a template and oligo-dT as a primer to perform reverse transcription reaction to synthesize cDNA. After purification with Qiagene's kit, the following primers are used for PCR amplification:
- Primerl 5'- TTTAGGACTCATTCATGTTCCTTT -3 '(SEQ ID NO: 3)
- Primer2 5'- GATGGATTCTTGCTCTGTTGCCAG -3 '(SEQ ID NO: 4)
- Primerl is a forward sequence starting at lbp at the 5 'end of SEQ ID NO: 1;
- Primer2 is the 3 'end reverse sequence in SEQ ID NO: 1.
- Amplification reaction conditions reaction volume containing 50 ⁇ 1 of 50mmol / L KC1, 10mmol / L Tris-HCl, pH8.5, 1.5mraol / L MgCl 2, 20 ( ⁇ mol / L dNTP, lOpmol primer, 1U Taq DM polymerase (Clontech).
- the reaction was performed on a PE9600 DNA thermal cycler (Perkin-Elmer) under the following conditions for 25 cycles: 94 ° C 30sec; 55 ° C 30sec; 72 ° C 2min 0 at RT -PCR set ⁇ -actin as positive control and template blank as negative control at the same time.
- the tissue was homogenized with 4M guanidinium isothiocyanate-25raM sodium citrate, 0.2M sodium acetate (pH 4.0), and 1 volume of phenol and 1/5 volume of chloroform-isoamyl alcohol (49: 1 ) And centrifuge after mixing. Aspirate the aqueous layer, add isopropanol (0.8 vol) and centrifuge the mixture to obtain RNA precipitate. The resulting RNA pellet was washed with 70% ethanol, dried and dissolved in water. Using 20 ⁇ ⁇ RNA, electrophoresis was performed on a 1.2% agarose gel containing 20 mM 3- (N-morpholino) propanesulfonic acid (pH 7.
- a 32P-labeled probe (about 2 x 10 6 cpm / ml) was hybridized with a nitrocellulose membrane to which R was transferred at 42 ° C overnight in a solution containing 50% formamide-25mM H 2 P0 4 (pH7.4)-5 x SSC-5 x Denhardt's solution and 20 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 phosphoribosylglycine synthetase 10 Based on the sequence of the coding region shown in SEQ ID NO: 1 and Figure 1, a pair of specificity was designed Amplification primer, the sequence is as follows:
- Primer3 5,-CATGCTAGCATGTGTGTTTGTATGGATACATTC -3, (Seq ID No: 5)
- Primer4 5'- CATGGATCCCTATTTGGTCTGAAGAGCACATAT -3 '(Seq ID No: 6)
- the 5' ends of these two primers contain Nhel and BamHI restriction sites, respectively.
- the coding sequences of the 5 'and 3' ends of the gene of interest are followed, respectively.
- the Nhel and BamHI restriction sites correspond to the selectivity within the expression vector plasmid pET-28b (+) (Novagen, Cat. No. 69865.3). Digestion site.
- PCR reaction was performed using the pBS-0550h01 plasmid containing the full-length target gene as a template.
- PCR reaction conditions were: 1 in a total volume of 50 ⁇ plasmid pBS-0550h01 containing 10pg, Primer-3 and Primer Primer- 4 are lOpmol, Advantage polymerase Mix (Clontech Products) 1 ⁇ 1.
- Cycle parameters 94 ° C 20s, 60. C 30s, 68 ° C 2 min, a total of 25 cycles.
- Nhel and BamHI were used to double-digest the amplified product and plasmid P ET-28 (+), respectively, and large fragments were recovered and ligated with T4 ligase. The ligated product was transformed into E.
- a peptide synthesizer (product of PE company) was used to synthesize the following specific peptides of human phosphoribosylglycine synthetase 10:
- NH2-Met-Cys-Val-Cys-Met-As p-Thr-Phe-Arg-I le-Lys-Phe-Val-Arg-Phe-C00H (SEQ ID NO: 7).
- the polypeptide is coupled with hemocyanin and bovine serum albumin to form a complex, respectively.
- hemocyanin and bovine serum albumin For methods, see: Avrameas, et al. Immunochemi stry, 1969; 6: 43. Rabbits were immunized with 4 mg of the hemocyanin polypeptide complex and complete Freund's adjuvant, and 15 days later, the hemocyanin polypeptide complex and incomplete Freund's adjuvant were used to boost the 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.
- Protein A-Sepharose was used to isolate total IgG from antibody-positive rabbit serum.
- the peptide was bound to a cyanogen bromide-activated Sepharose4B column, and anti-peptide antibodies were separated from the total I gG by affinity chromatography.
- Immunoprecipitation demonstrated that the purified antibody specifically binds to human phosphoribosylglycine synthetase 10.
- 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 blotting, Northern blotting, and copying methods. They all use the same steps of hybridization after fixing the polynucleotide sample to be tested on the filter.
- the sample-immobilized filter is first pre-hybridized with a probe-free hybridization buffer, so that the non-specific binding site of the sample on the filter is saturated with the carrier and the synthetic polymer.
- the pre-hybridization solution is then replaced with a hybridization buffer containing labeled probes, and Incubation hybridizes the probe to the target nucleic acid.
- the unhybridized probes are removed by a series of membrane washing steps.
- This embodiment utilizes higher-intensity washing conditions (such as lower salt concentration and higher temperature) to reduce the hybridization background and retain only strong specific signals.
- 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 for use as hybridization probes from the polynucleotide SEQ ID NO: 1 of the present invention should follow the following principles and several aspects to be considered:
- the preferred range of probe size is 18-50 nucleotides
- the GC content is 30% -70%, and the non-specific hybridization increases when it exceeds;
- 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 For homology comparison of the regions, if the homology with the non-target molecular region is greater than 85% or there are more than 15 consecutive bases, the primary probe should not be used generally;
- 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):
- probe2 which belongs to the second type of probe, is equivalent to the replacement mutation sequence of the gene fragment of SEQ ID NO: 1 or its complementary fragment (41Nt):
- step 8-13 are only used when contamination must be removed, otherwise step 14 can be performed directly.
- NC membrane nitrocellulose membrane
- Two NC membranes are required for each probe, so that it can be used in the following experimental steps.
- the film was washed with high-strength conditions and strength conditions, respectively.
- the 32 P-Probe (the second peak is free ⁇ - 32 P-dATP) is prepared.
- the sample membrane was placed in a plastic bag, and 3-10 mg of prehybridization solution (lOxDenhardt-s; 6xSSC, 0.1 mg / ml CT DM (calf thymus DNA)) was added. After sealing the bag, shake at 68 ° C for 2 hours.
- prehybridization solution lOxDenhardt-s; 6xSSC, 0.1 mg / ml CT DM (calf thymus DNA)
- Gene chip or DNA microarray is a new technology that many national laboratories and large pharmaceutical companies are currently developing and developing. It refers to the orderly and high-density arrangement of a large number of target gene fragments on glass, The data is compared and analyzed on a carrier such as silicon using fluorescence detection and computer software to achieve the purpose of fast, efficient, and high-throughput analysis of biological information.
- 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 hereditary diseases .
- the specific method steps have been reported in the literature. For example, see DeRi si, JL, Lyer, V. & Brown, P. 0. (1997) Science 278, 680-686. And He lle, RA. , Schema, M., Cha i. A., Sha lom, D., (1997) PNAS 94: 2150-2155.
- 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 respectively amplified by PCR, and the concentration of the amplified product was adjusted to about 500ng / ul after purification. The spots were spotted on a glass medium with a Cartesian 7500 spotter (purchased from Cartesian Company, USA). The distance between them is 280 ⁇ m. The spotted slides are hydrated, dried, and exposed to UV light. Cross-link in the cross-linker. After elution, the DNA is fixed on a glass slide to prepare a chip. The specific method steps have been variously reported in the literature. 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 mRM was purified by Ol igotex mRNA Midi Kit (purchased from QiaGen), and another 1 J was separated by reverse transcription.
- the fluorescent reagent Cy3dUTP (5-Amino-propargyl-2--deoxyuridine 5'-tr iphate coupled to Cy3 f luorescent dye, purchased from Araersham Phamac ia Biotech) was used to label the mRNA of human mixed tissue, and the fluorescent reagent Cy5dUTP (5- Amino-propargyl- 2'-deoxyur idine 5--tr iphate coupled to Cy5 fluorescent dye (purchased from Amershara Phamacia Biotech) was used to label mRM, a specific tissue (or stimulated cell line) of the body, and probes were prepared after purification.
- Cy3dUTP 5-Amino-propargyl-2--de
- the probes from the above two types of tissues were hybridized with the chip in UniHyb TM Hybridization Solution (purchased from TeleChem) hybridization solution for 16 hours, and washed with a washing solution (lx SSC, 0.2% SDS) at room temperature Scanning was performed with a ScanArray 3000 scanner (purchased from Genera Scanning, USA), and the scanned images were analyzed and processed with Iraagene software (Biodi scovery, 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, L02 cell line stimulated by arsenic for 1 hour, L02 cell line stimulated by arsenic for 6 hours prostate, heart, lung cancer, fetal bladder, fetal small intestine, fetal large intestine, fetal thymus, fetal muscle, fetal liver, fetal kidney, fetal spleen, fetal brain, Fetal lung and fetal heart.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Enzymes And Modification Thereof (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU58149/01A AU5814901A (en) | 2000-03-24 | 2001-03-23 | A novel polypeptide, human glycinamide ribonucleotide synthetase 10 and the polynucleotide encoding the polypeptide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00115113 CN1315505A (zh) | 2000-03-24 | 2000-03-24 | 一种新的多肽——人磷酸核糖甘氨酰胺合成酶10和编码这种多肽的多核苷酸 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001075032A2 true WO2001075032A2 (fr) | 2001-10-11 |
WO2001075032A3 WO2001075032A3 (fr) | 2002-02-21 |
Family
ID=4584582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2001/000394 WO2001075032A2 (fr) | 2000-03-24 | 2001-03-23 | Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 10, et polynucleotide codant pour ce polypeptide |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1315505A (zh) |
AU (1) | AU5814901A (zh) |
WO (1) | WO2001075032A2 (zh) |
-
2000
- 2000-03-24 CN CN 00115113 patent/CN1315505A/zh active Pending
-
2001
- 2001-03-23 AU AU58149/01A patent/AU5814901A/en not_active Abandoned
- 2001-03-23 WO PCT/CN2001/000394 patent/WO2001075032A2/zh active Application Filing
Non-Patent Citations (5)
Title |
---|
CHEN Y.L. ET AL. MOL. BIOL. REP. vol. 26, no. 3, August 1999, pages 195 - 199 * |
DATABASE DDBJ [Online] 13 February 1999 NOMURA N. Database accession no. D63877 * |
DATABASE GENBANK [Online] 17 December 1999 STONE N.E. ET AL. Database accession no. AC005768 * |
DATABASE GENBANK [Online] 23 November 1999 GRAFHAM D., XP002907149 Retrieved from EMBL Database accession no. Z81370 * |
KAN J.L. ET AL. GENE vol. 137, no. 2, 31 December 1993, pages 195 - 202 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001075032A3 (fr) | 2002-02-21 |
CN1315505A (zh) | 2001-10-03 |
AU5814901A (en) | 2001-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2001068689A1 (fr) | Nouveau polypeptide, 1alpha sous-unite 13 humaine du facteur adaptatif de l'hypoxie, et polynucleotide codant pour ce polypeptide | |
WO2001090378A1 (fr) | Nouveau polypeptide, proteine humaine hexokinase 11, et polynucleotide codant ce polypeptide | |
WO2001068694A1 (fr) | Nouveau polypeptide, proteine humaine d'hexokinase 10, et polynucleotide codant pour ce polypeptide | |
WO2001083538A1 (fr) | Nouveau polypeptide, proteine humaine 36 du gene k-ras, et polynucleotide codant pour ce polypeptide | |
WO2001075032A2 (fr) | Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 10, et polynucleotide codant pour ce polypeptide | |
WO2001075085A1 (fr) | Nouveau polypeptide, serine hydrolase humaine atp-dependante 11.3, et polynucleotide codant pour ce polypeptide | |
WO2001075023A2 (fr) | Nouveau polypeptide, phosphatidylinositol-3 (ptdins 3) kinase humaine 9, et polynucleotide codant pour ce polypeptide | |
WO2001068873A1 (fr) | Nouveau polypeptide, molecule humaine d'adhesion intercellulaire 12, et polynucleotide codant pour ce polypeptide | |
WO2001070800A1 (fr) | Nouveau polypeptide, proteine humaine 11 helicase atp-dependante, et polynucleotide codant pour ce polypeptide | |
WO2001090376A1 (fr) | Nouveau polypeptide, triose phosphate isomerase humaine 11, et polynucleotide codant ce polypeptide | |
WO2001092541A1 (fr) | Nouveau polypeptide, catalase 12, et polynucleotide codant ce polypeptide | |
WO2001094371A1 (fr) | Nouveau polypeptide, proteine ribosomale humaine s4-10, et polynucleotide codant ce polypeptide | |
WO2001085923A1 (fr) | Nouveau polypeptide, serine hydrolase humaine atp-dependante 9.2, et polynucleotide codant pour ce polypeptide | |
WO2001072801A1 (fr) | Nouveau polypeptide, proteine ribosomale humaine s11 12, et polynucleotide codant pour ce polypeptide | |
WO2001073065A1 (fr) | Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 12, et polynucleotide codant pour ce polypeptide | |
WO2001070795A1 (fr) | Nouveau polypeptide, glycinamide ribonucleotide synthetase humaine 13, et polynucleotide codant pour ce polypeptide | |
WO2001072810A1 (fr) | Nouveau polypeptide, proteine humaine 12 de la famille des amidases, et polynucleotide codant pour ce polypeptide | |
WO2001048219A1 (fr) | Nouveau polypeptide, proteine de transport phosphorylee 10, et polynucleotide codant pour ce polypeptide | |
WO2001075027A2 (fr) | Nouveau polypeptide, helicase humaine 13, et polynucleotide codant pour ce polypeptide | |
WO2001090171A1 (fr) | Nouveau polypeptide, proteine humaine ribosomale sii 12, et polynucleotide codant ce polypeptide | |
WO2001075126A1 (fr) | Nouveau polypeptide, proteine ribosomale humaine s18-9, et polynucleotide codant pour ce polypeptide | |
WO2001083680A2 (en) | A novel polypeptide- human phosphoribosyl glycinamide synthase 11 and the polynucleotide encoding said polypeptide | |
WO2001081536A2 (fr) | Nouveau polypeptide, proteine kinase ysk1 humaine 10, et polynucleotide codant pour ce polypeptide | |
WO2001072992A1 (fr) | Nouveau polypeptide, serine hydrolase humaine atp-dependante 16, et polynucleotide codant pour ce polypeptide | |
WO2001079435A2 (en) | A new polypeptide- human flavoprotein subunit 14 and the polynucleotide encoding it |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase in: |
Ref country code: JP |