CN1300769A - Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide - Google Patents

Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide Download PDF

Info

Publication number
CN1300769A
CN1300769A CN 99125733 CN99125733A CN1300769A CN 1300769 A CN1300769 A CN 1300769A CN 99125733 CN99125733 CN 99125733 CN 99125733 A CN99125733 A CN 99125733A CN 1300769 A CN1300769 A CN 1300769A
Authority
CN
China
Prior art keywords
polypeptide
polynucleotide
protein
dna
sequence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 99125733
Other languages
Chinese (zh)
Inventor
毛裕民
谢毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fudan University
Shanghai Bodao Gene Technology Co Ltd
Original Assignee
Fudan University
Shanghai Bodao Gene Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fudan University, Shanghai Bodao Gene Technology Co Ltd filed Critical Fudan University
Priority to CN 99125733 priority Critical patent/CN1300769A/en
Priority to AU19890/01A priority patent/AU1989001A/en
Priority to PCT/CN2000/000627 priority patent/WO2001047988A1/en
Publication of CN1300769A publication Critical patent/CN1300769A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Biophysics (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Peptides Or Proteins (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Abstract

A new polypeptide-DNA mismatch repair protein 11, the polynucleotide for coding it, the process for preparing said polypeptide by DNA recombination, the application of said polypeptide in treating diseases (cancer, HIV infection, etc.), the antagonist of said polypeptide and its medical function, and the application of said polynucleotide are disclosed.

Description

A kind of new polypeptide--dna mismatch is repaired the polynucleotide of protein 11 and this peptide species of coding
The invention belongs to biological technical field, specifically, the invention describes a kind of new polypeptide--dna mismatch is repaired protein 11, and the polynucleotide sequence of this polypeptide of encoding.The invention still further relates to the preparation method and the application of these polynucleotide and polypeptide.
Archaeal dna polymerase once in a while can catalysis can not form the mixing of wrong base of hydrogen bond with template.This and misreplication are usually by archaeal dna polymerase 3 '--and 5 ' check and correction function is corrected immediately, just begins the polyreaction of next Nucleotide then.Yet under some special conditions, archaeal dna polymerase is retained in the wrong base of only a few on the DNA chain and does not correct.According to estimates, the frequency of this mistake is 10 -8Yet, people's actual measurement to mutation frequency be 10 -10Or 10 -11Because the integrity of DNA and the basic place that accuracy is life, thereby develop in the cell and another repair system, be called mismatch repair system, give the chance of correcting a mistake for the second time.(Modrich?P.Annu.Rev.Biochem.56:435-466(1987))
Methylating of VITAMIN B4 then is the identifier that mispairing is repaired, the feature of bringing according to methylating, and mismatch repair system just can identify template strand and nascent strand, thereby corrects the unpaired base on the new life, has guaranteed the accuracy and the integrity of height.
It is constitutive protein important in the mismatch repair system that dna mismatch is repaired albumen, and dna mismatch is repaired albumen all has existence in a lot of organisms, for example, and colibacillary mutL albumen; Streptococcic hexB albumen; Zymic PMSl and MLH1 albumen; People's MLH1 (MutL homologue-1) albumen or the like.
All dna mismatches are repaired albumen and are all contained a conservative zone, the sequence fragment of following unanimity: G-F-R-G-E-A-L is contained in this zone, repair in the albumen at numerous different biological dna mismatches and all to contain this sequence fragment, this structural motif plays a part very important in albumen is brought into normal play the process of physiologic function.The result who the zymic dna mismatch is repaired albumen research shows, can cause losing fully of protein function if Pro640 becomes Leu.Dna mismatch is repaired the concrete structure of albumen and is seen also pertinent literature with function relationship.(Gene?1998Jun?15；213(1-2):159-67)
According to existing research,, then can cause heritable non-polyposis colorectal cancer (HNPCC) if the gene of coding human DNA mismatch repair protein is undergone mutation.(Gene?1998?Jun?15；213(1-2):159-67)
Nearest result of study shows, dna mismatch is repaired albumen (DNA mismatch repair protein MMR) has very strong interaction with a kind of new human exonuclease, we can infer that dna repair protein is the reparation of DNA to be worked with a lot of protein binding together.(Cancer?Res?1998?Oct15；58(20):4537-42)
There are some researches show that also dna mismatch is repaired albumen in the cell cycle process,, thereby guaranteed the fidelity of cell mitogen process heredity for the important repair of being mixed with of the wrong base that may occur in the dna replication dna.(Cancer?Res?1998?Feb?15；58(4):767-78)
Because dna mismatch reparation protein 11 albumen plays an important role in the body critical function as mentioned above, and believe and relate to a large amount of albumen in these regulate processes, thereby the dna mismatch that always needs to identify more these processes of participation in this area repairs protein 11 albumen, particularly identifies this proteic aminoacid sequence.The separation that new dna mismatch is repaired the protein 11 protein coding gene also provides the foundation for determining the effect of this albumen under healthy and morbid state.This albumen may constitute the basis of exploitation medical diagnosis on disease and/or curative, and it is very important therefore separating its coding DNA.
An object of the present invention is to provide isolating new polypeptide--dna mismatch repair protein 11 with and fragment, analogue and derivative.
Another object of the present invention provides the polynucleotide of this polypeptide of coding.
Another object of the present invention provides the recombinant vectors of the polynucleotide that contain coding DNA mismatch repair protein 11.
Another object of the present invention provides the genetically engineered host cell of the polynucleotide that contain coding DNA mismatch repair protein 11.
Another object of the present invention provides the method that dna mismatch is repaired protein 11 of producing.
Another object of the present invention provides at polypeptide of the present invention--and dna mismatch is repaired the antibody of protein 11.Another object of the present invention has provided at polypeptide of the present invention--and dna mismatch is repaired simulated compound, antagonist, agonist, the inhibitor of protein 11.Another object of the present invention provides the method for the diagnoses and treatment disease relevant unusually with dna mismatch reparation protein 11.The present invention relates to a kind of isolated polypeptide, this polypeptide is the people source, and it comprises: polypeptide or its examples of conservative variations, bioactive fragment or derivative with SEQ ID No.2 aminoacid sequence.Preferably, this polypeptide is the polypeptide with SEQ ID NO:2 aminoacid sequence.
The invention still further relates to a kind of isolating polynucleotide, it comprises a kind of nucleotide sequence or its variant that is selected from down group:
(a) coding has the polynucleotide of the polypeptide of SEQ ID No.2 aminoacid sequence;
(b) with polynucleotide (a) complementary polynucleotide;
(c) with (a) or polynucleotide sequence (b) have the polynucleotide of at least 70% homogeny.
More preferably, the sequence of these polynucleotide is be selected from down group a kind of: the sequence that (a) has 1500-1805 position among the SEQ ID NO:1; (b) has the sequence of 1-2453 position among the SEQ ID NO:1.
The present invention relates to a kind of carrier that contains polynucleotide of the present invention, particularly expression vector in addition; The host cell that this carrier of a kind of usefulness is genetically engineered comprises the host cell of conversion, transduction or transfection; A kind of method for preparing polypeptide of the present invention of cultivating described host cell and reclaiming expression product that comprises.
The invention still further relates to a kind of can with polypeptid specificity bonded antibody of the present invention.
The invention still further relates to a kind of simulation, activation, antagonism of screening or suppress the method that dna mismatch is repaired the compound of protein 11 protein-active, it comprises and utilizes polypeptide of the present invention.The invention still further relates to the compound that obtains with this method.
The invention still further relates to a kind of vitro detection and repair the relevant disease of protein 11 abnormal protein expression or the method for disease susceptibility with dna mismatch, comprise the sudden change in polypeptide described in the detection of biological sample or its coded polynucleotide sequence, perhaps the amount or the biological activity of polypeptide of the present invention in the detection of biological sample.
The present invention also relates to a kind of pharmaceutical composition, it contains polypeptide of the present invention or its stand-in, activator, antagonist or inhibitor and pharmaceutically acceptable carrier.
The invention still further relates to polypeptide of the present invention and/or polynucleotide and be used for the treatment of cancer, developmental character disease or immunological disease or other purposes owing to the medicine of dna mismatch reparation protein 11 disease that abnormal expression causes in preparation.
Others of the present invention are because disclosing of the technology of this paper is conspicuous to those skilled in the art.
The following term of using in this specification sheets and claims has following implication unless stated otherwise: " nucleotide sequence " is meant oligonucleotide, Nucleotide or polynucleotide and fragment or part, also can refer to genome or synthetic DNA or RNA, they can be strand or two strands, represent sense strand or antisense strand.Similarly, term " aminoacid sequence " is meant oligopeptides, peptide, polypeptide or protein sequence and fragment or part.When " aminoacid sequence " among the present invention related to a kind of aminoacid sequence of naturally occurring protein molecule, this " polypeptide " or " protein " did not mean that aminoacid sequence are restricted to the complete natural amino acid relevant with described protein molecule.
Protein or polynucleotide " variant " are meant a kind of polynucleotide sequence that has the aminoacid sequence of one or more amino acid or Nucleotide change or encode it.Described change can comprise disappearance, insertion or the replacement of amino acid in aminoacid sequence or the nucleotide sequence or Nucleotide.Variant can have " conservative property " and change, and wherein the amino acid of Ti Huaning has structure or the chemical property similar with original acid, as replacing Isoleucine with leucine.Variant also can have non-conservation and change, as replacing glycine with tryptophane.
" disappearance " is meant the disappearance of in aminoacid sequence or nucleotide sequence one or more amino acid or Nucleotide.
" insertion " or " interpolation " is meant that the change in aminoacid sequence or nucleotide sequence causes comparing the increase of one or more amino acid or Nucleotide with naturally occurring molecule." replacement " is meant by different amino acid or Nucleotide and replaces one or more amino acid or Nucleotide.
" biological activity " is meant the protein of structure, regulation and control or biochemical function with natural molecule.Similarly, term " immunologic competence " be meant natural, reorganization or synthetic protein and fragment thereof in suitable animal or cell, induce specific immune response and with specific antibody bonded ability.
" agonist " is meant when combining with dna mismatch reparation protein 11, thereby a kind of this protein that causes changes the molecule of regulating this protein active.Agonist can comprise that protein, nucleic acid, carbohydrate or any other can repair the molecule of protein 11 in conjunction with dna mismatch.
" antagonist " or " inhibition " be meant when when dna mismatch is repaired protein 11 and combined, and a kind ofly seals or regulate dna mismatch and repair the biologic activity of protein 11 or the molecule of immunologic competence.Antagonist and inhibition can comprise that protein, nucleic acid, carbohydrate or any other can repair the molecule of protein 11 in conjunction with dna mismatch.
" adjusting " is meant that the function of dna mismatch reparation protein 11 changes, and comprises rising or reduction, the change of binding characteristic and the change that dna mismatch is repaired any other biological property, function or the immune property of protein 11 of protein active.
" pure basically " is meant and is substantially free of natural relative other albumen, lipid, carbohydrate or other material.Those skilled in the art can use the purified technology of protein purify DNA mismatch repair protein 11 of standard.Basically pure dna mismatch is repaired protein 11 can produce single master tape on the irreducibility polyacrylamide gel.Dna mismatch is repaired the purity available amino end acid sequence of protein 11 polypeptide and is analyzed.
" complementary " or " complementation " is meant under salt concn that allows and temperature condition by the natural combination of the polynucleotide of base pairing.For example, sequence " C-T-G-A " can combine with complementary sequence " G-A-C-T ".Complementation between two single chain molecules can be part or whole.Complementary degree between the nucleic acid chains has a significant effect for efficient of hybridizing between the nucleic acid chains and intensity.
" homology " is meant the complementary degree, can be portion homologous or complete homology." portion homologous " is meant a kind of part complementary sequence, and it can partly suppress the hybridization of complete complementary sequence and target nucleic acid at least.The inhibition of this hybridization can detect by hybridizing (Southern trace or Northern trace etc.) under the condition that reduces in the severity degree.Basically homologous sequence or hybridization probe can compete and suppress complete homologous sequence and target sequence the condition that reduces of severity degree under combine.This does not mean the conditions permit non-specific binding that the severity degree reduces because the conditional request two sequences that the severity degree reduces mutual be combined into specificity or selectivity interacts.
" homogeny percentage " be meant two or more amino acid or nucleotide sequence relatively in the same or analogous percentage of sequence.The available electron method is measured the homogeny percentage, as passing through MEGALIGN program (Lasergene softwarepackage, DNASTAR, Inc., Madison Wis.).The MEGALIGN program can compare two or more sequences (Higgins, D.G. and P.M.Sharp (1988) Gene 73:237-244) according to diverse ways such as Cluster method.The Cluster method is organized the series arrangement cluster by checking the distance between all pairings with each.Then with each bunch with in pairs or become set of dispense.Homogeny percentage between two aminoacid sequences such as sequence A and the sequence B calculates by following formula:
The residue number of mating between sequence A and the sequence B
100 (in the several sequence A of the residue of sequence A at interval in the several sequence B of residue residue number) at interval
Also can be by the Cluster method or with the homogeny percentage (Hein J., (1990) Methods in emzumology 183:625-645) between known method in this area such as the Jotun Hein mensuration nucleotide sequence.
" similarity " is meant the degree that the identical or conservative property of corresponding position amino-acid residue when arranging contrast between the aminoacid sequence replaces.For example be used for amino acid that conservative property replaces, electronegative amino acid can comprise aspartic acid and L-glutamic acid; Positively charged amino acid can comprise Methionin and arginine; Having uncharged head group has similar hydrophilic amino acid can comprise leucine, Isoleucine and Xie Ansuan; Glycine and L-Ala; L-asparagine and glutamine; Serine and Threonine; Phenylalanine and tyrosine.
" antisense " is meant and specific DNA or RNA sequence complementary nucleotide sequence." antisense strand " is meant and " sense strand " complementary nucleic acid chains.
" derivative " is meant HFP or encodes its chemical modification object of nucleic acid.This chemical modification object can be with alkyl, acyl group or the amino hydrogen atom of replacing.The nucleic acid derivative codified keeps the polypeptide of the main biological characteristics of natural molecule.
" antibody " is meant complete antibody molecule and fragment thereof, as Fa, F (ab ') 2And Fv, its energy specificity is repaired the antigenic determinant of protein 11 in conjunction with dna mismatch.
" humanized antibody " is meant that the aminoacid sequence in non-antigen binding domain territory is replaced and becomes more similar to people's antibody, but still keep original in active antibody.
" isolating " speech refers to material is shifted out among its original environment (for example, if spontaneous its natural surroundings that just refers to).Such as it is exactly not to be separated that spontaneous polynucleotide or polypeptide are present in the Live Animals, but same polynucleotide or polypeptide with some or all in natural system with it the material of coexistence separately be exactly isolating.Such polynucleotide may be the parts of a certain carrier, the part that also possible such polynucleotide or polypeptide are a certain composition.Since carrier or composition are not the compositions of its natural surroundings, they remain isolating.
As used herein, " isolating " are meant that material separates (if natural substance, primal environment promptly is a natural surroundings) from its primal environment.Do not have separation and purification as polynucleotide under the native state in the active somatic cell and polypeptide, but same polynucleotide or polypeptide as from native state with in other materials that exist separately, then for separation and purification.
As used herein, " separated DNA mismatch repair protein 11 " is meant that dna mismatch reparation protein 11 is substantially free of natural relative other albumen, lipid, carbohydrate or other material.Those skilled in the art can use the purified technology of protein purify DNA mismatch repair protein 11 of standard.Basically pure polypeptide can produce single master tape on non-reduced polyacrylamide gel.Dna mismatch is repaired the purity of protein 11 polypeptide can use amino acid sequence analysis.
The invention provides a kind of new polypeptide--dna mismatch is repaired protein 11, and it is made up of the aminoacid sequence shown in the SEQ ID NO:2 basically.Polypeptide of the present invention can be recombinant polypeptide, natural polypeptides, synthetic polypeptide, preferred recombinant polypeptide.Polypeptide of the present invention can be the product of natural purifying, or the product of chemosynthesis, or uses recombinant technology to produce from protokaryon or eucaryon host (for example, bacterium, yeast, higher plant, insect and mammalian cell).The host used according to the recombinant production scheme, polypeptide of the present invention can be glycosylated, maybe can be nonglycosylated.Polypeptide of the present invention also can comprise or not comprise initial methionine residues.
The present invention also comprises fragment, derivative and the analogue of dna mismatch reparation protein 11.As used herein, term " fragment ", " derivative " are meant with " analogue " and keep dna mismatch of the present invention to repair identical biological function or the active polypeptide of protein 11 basically.The fragment of polypeptide of the present invention, derivative or analogue can be: (I) is a kind of like this, wherein one or more amino-acid residues are replaced by conservative or non-conservative amino acid residues (preferably conservative amino acid residues), and the amino acid that replaces can be also can not encoded by genetic codon; Perhaps (II) is a kind of like this, and certain group on wherein one or more amino-acid residues is replaced by other group and comprises substituting group; Perhaps (III) is a kind of like this, and wherein mature polypeptide and another kind of compound (such as the compound that prolongs the polypeptide transformation period, for example polyoxyethylene glycol) merge; Perhaps (IV) is a kind of like this, wherein additional aminoacid sequence is integrated into mature polypeptide and the peptide sequence that forms (as leader sequence or secretion sequence or be used for the sequence or the proteinogen sequence of this polypeptide of purifying) by the elaboration of this paper, such fragment, derivative and analogue are considered within those skilled in the art's ken.
The invention provides isolating nucleic acid (polynucleotide), substantially the polynucleotide that have a polypeptide of SEQ ID NO:2 aminoacid sequence by coding are formed.Polynucleotide sequence of the present invention comprises the nucleotide sequence of SEQ ID NO:1.Polynucleotide of the present invention are to find from the cDNA library of people's fetal brain tissue.The polynucleotide sequence total length that it comprises is 2453 bases, its open reading frame 1500-1805 112 amino acid of having encoded.This polypeptide has dna mismatch and repairs proteic characteristic sequence, and deducibility goes out this dna mismatch and repairs the 26S Proteasome Structure and Function that protein 11 has dna mismatch reparation protein specificity sequence representative.
Polynucleotide of the present invention can be dna form or rna form.Dna form comprises the DNA of cDNA, genomic dna or synthetic.DNA can be strand or double-stranded.DNA can be coding strand or noncoding strand.The coding region sequence of encoding mature polypeptide can be identical with the coding region sequence shown in the SEQ ID NO:1 or the varient of degeneracy.As used herein, " varient of degeneracy " are meant that in the present invention coding has protein or the polypeptide of SEQ ID NO:2, but with the differentiated nucleotide sequence of coding region sequence shown in the SEQ ID NO:1.
The polynucleotide of the mature polypeptide of coding SEQ ID NO:2 comprise: the encoding sequence that has only mature polypeptide; The encoding sequence of mature polypeptide and various additional code sequence; Encoding sequence of mature polypeptide (with optional additional code sequence) and non-coding sequence.
Term " polynucleotide of coded polypeptide " is meant polynucleotide that comprise this polypeptide of encoding and the polynucleotide that comprise additional code and/or non-coding sequence.
The invention still further relates to the varient of foregoing description polynucleotide, its coding has the polypeptide of identical aminoacid sequence or segment, analogue and the derivative of polypeptide with the present invention.The varient of these polynucleotide can be the allelic variant of natural generation or the varient that non-natural takes place.These nucleotide diversity bodies comprise and replace varient, deletion mutation body and insert varient.As known in the art, allelic variant is the replacement form of polynucleotide, and it may be replacement, disappearance or the insertion of one or more Nucleotide, but can be from not changing the function of its encoded polypeptides in fact.
The invention still further relates to and the polynucleotide (have at least 50% between two sequences, preferably have 70% homogeny) of sequence hybridization described above.The present invention be more particularly directed under stringent condition and the interfertile polynucleotide of polynucleotide of the present invention.In the present invention, " stringent condition " is meant: (1) than hybridization under low ionic strength and the comparatively high temps and wash-out, as 0.2 * SSC, and 0.1%SDS, 60 ℃; Or (2) hybridization the time adds and to use denaturing agent, as 50% (v/v) methane amide, 0.1% calf serum/0.1%Ficoll, 42 ℃ etc.; Or (3) only at the homogeny between the two sequences at least more than 95%, be more preferably 97% and just hybridize when above.And the polypeptide of interfertile polynucleotide encoding has identical biological function and activity with the mature polypeptide shown in the SEQ ID NO:2.
The invention still further relates to nucleic acid fragment with sequence hybridization described above.As used herein, " nucleic acid fragment " length contain 10 Nucleotide at least, better be 20-30 Nucleotide at least, be more preferably 50-60 Nucleotide at least, preferably more than at least 100 Nucleotide.Nucleic acid fragment also can be used for the amplification technique (as PCR) of nucleic acid to determine and/or to separate the polynucleotide of coding DNA mismatch repair protein 11.
Polypeptide among the present invention and polynucleotide preferably provide with isolating form, more preferably are purified to homogeneous.
The special polynucleotide sequence of coding DNA mismatch repair protein 11 of the present invention can obtain with several different methods.For example, separate polynucleotide with hybridization technique well known in the art.These technology including, but not limited to: 1) with probe and genome or the hybridization of cDNA library to detect homologous polynucleotide sequence and 2) antibody screening of expression library to be to detect the polynucleotide passage of the clone with common structure feature.
Sequence dna fragment of the present invention also can obtain with following method: 1) separate double chain DNA sequence from genomic dna; 2) the chemical synthesising DNA sequence is to obtain the double-stranded DNA of described polypeptide.
In the above-mentioned method of mentioning, isolation of genomic DNA is least commonly used.The direct chemical of dna sequence dna is synthetic to be the method for often selecting for use.The more frequent method of selecting for use is the separation of cDNA sequence.The standard method that separates interested cDNA is from the donorcells separating mRNA of this gene of high expression level and carries out reverse transcription, forms plasmid or phage cDNA library.Extract the existing multiple proven technique of method of mRNA, test kit also can obtain (Qiagene) from commercial channels.And the construction cDNA library also is usual method (Sambrook, et al., Mo1ecularCloning, A Laboratory Manual, Cold Spring Harbor Laboratory.New York, 1989).Also can obtain the cDNA library of commercial offers, as the different cDNA library of Clontech company.When being used in combination the polymeric enzyme reaction technology, even few expression product also can be cloned.
Available ordinary method is screened gene of the present invention from these cDNA libraries.These methods include, but is not limited to: (1) DNA-DNA or DNA-RNA hybridization; (2) appearance of marker gene function or forfeiture; (3) measure the level that dna mismatch is repaired the transcript of protein 11; (4), detect the protein product of genetic expression by immunological technique or mensuration biologic activity.Aforesaid method can singly be used, but also several different methods combined utilization.
In (1) kind method, hybridizing used probe is and any a part of homology of polynucleotide of the present invention that at least 10 Nucleotide of its length better are at least 30 Nucleotide, are more preferably at least 50 Nucleotide, preferably at least 100 Nucleotide.In addition, within 2000 Nucleotide, preferable is within 1000 Nucleotide to the length of probe usually.Probe used herein is the dna sequence dna of chemosynthesis on the basis of gene order information of the present invention normally.Gene of the present invention itself or fragment are certainly as probe.The mark of dna probe can be used radio isotope, fluorescein or enzyme (as alkaline phosphatase) etc.
In (4) kind method, detect the protein product of dna mismatch reparation protein 11 genetic expression and can use immunological technique such as Western blotting, radioimmunoprecipitation, enzyme-linked immunosorbent assay (ELISA) etc.
Use method (Saiki, the et al.Science1985 of round pcr DNA amplification/RNA; 230:1350-1354) be optimized for acquisition gene of the present invention.When particularly being difficult to from the library, obtain the cDNA of total length, can preferably use RACE method (the terminal rapid amplifying method of RACE-cDNA), the primer that is used for PCR can suitably be selected according to polynucleotide sequence information of the present invention disclosed herein, and available ordinary method is synthetic.Available ordinary method is as the DNA/RNA fragment by gel electrophoresis separation and purifying amplification.
The gene of the present invention that obtains as mentioned above, perhaps the polynucleotide sequence of various dna fragmentations etc. can with ordinary method such as dideoxy chain termination (Sanger et al.PNAS, 1977,74:5463-5467) measure.This class polynucleotide sequence is measured also available commercial sequencing kit etc.In order to obtain the cDNA sequence of total length, order-checking need be carried out repeatedly.Sometimes need to measure a plurality of clones' cDNA sequence, just can be spliced into the cDNA sequence of total length.
The present invention also relates to comprise the carrier of polynucleotide of the present invention, and with carrier of the present invention or directly with the host cell of dna mismatch reparation protein 11 encoding sequence through the genetically engineered generation, and the method that produces polypeptide of the present invention through recombinant technology.
Among the present invention, the polynucleotide sequence of coding DNA mismatch repair protein 11 can be inserted in the carrier, contains the recombinant vectors of polynucleotide of the present invention with formation.Term " carrier " refers to that bacterial plasmid well known in the art, phage, yeast plasmid, vegetable cell virus, mammalian cell virus are as adenovirus, retrovirus or other carrier.The carrier of Shi Yonging includes but not limited in the present invention: and the expression vector based on the T7 promotor of in bacterium, expressing (Rosenberg, et al.Gene, 1987,56:125); The pMSXND expression vector of in mammalian cell, expressing (Lee and Nathans, J Bio Chem.263:3521,1988) and at the carrier that derives from baculovirus of expressed in insect cells.In a word, as long as can duplicate in host and stablize, any plasmid and carrier may be used to make up recombinant expression vector.A key character of expression vector is to contain replication origin, promotor, marker gene and translational control element usually.
Method well-known to those having ordinary skill in the art can be used to make up the dna sequence dna that contains coding DNA mismatch repair protein 11 and the expression vector of suitable transcribing/translational control element.These methods comprise (Sambroook, et al.Molecular Cloning, aLaboratory Manual, cold Spring Harbor Laboratory.New York, 1989) such as extracorporeal recombinant DNA technology, DNA synthetic technology, the interior recombinant technologys of body.Described dna sequence dna can effectively be connected on the suitable promotor in the expression vector, and is synthetic to instruct mRNA.The representative example of these promotors has: colibacillary lac or trp promotor; The PL promotor of lambda particles phage; Eukaryotic promoter comprises LTRs and some other known may command gene expression promoter in prokaryotic cell prokaryocyte or eukaryotic cell or its virus of CMV immediate early promoter, HSV thymidine kinase promoter, early stage and late period SV40 promotor, retrovirus.Expression vector also comprises ribosome bind site that translation initiation is used and transcription terminator etc.Inserting enhancer sequence in carrier will make its transcribing in higher eucaryotic cells be enhanced.Enhanser is the cis acting factor that DNA expresses, and nearly 10 to 300 base pairs act on promotor transcribing with enhancing gene usually.Can for example be included in the SV40 enhanser of 100 to 270 base pairs of replication origin side in late period one, at the polyoma enhanser of replication origin side in late period one and adenovirus enhanser etc.
In addition, expression vector preferably comprises one or more selected markers, to be provided for selecting the phenotypic character of transformed host cells, cultivate Tetrahydrofolate dehydrogenase, neomycin resistance and the green fluorescent protein (GFP) of usefulness as eukaryotic cell, or be used for colibacillary tsiklomitsin or amicillin resistance etc.
Persons skilled in the art all know how to select appropriate carriers/transcriptional regulatory element (as promotor, enhanser etc.) and selected marker.
Among the present invention, the polynucleotide of coding DNA mismatch repair protein 11 or the recombinant vectors that contains these polynucleotide can transform or transduce into host cell, contain the genetically engineered host cell of these polynucleotide or recombinant vectors with formation.Term " host cell " refers to prokaryotic cell prokaryocyte, as bacterial cell; Or eukaryotic cell such as low, as yeast cell; Or higher eucaryotic cells, as mammalian cell.Representative example has: intestinal bacteria, streptomyces; Bacterial cell such as Salmonella typhimurium; Fungal cell such as yeast; Vegetable cell; Insect cell such as fruit bat S2 or Sf9; Zooblast such as CHO, COS or Bowes melanoma cells etc.
Can carry out with routine techniques well known to those skilled in the art with dna sequence dna of the present invention or the recombinant vectors transformed host cell that contains described dna sequence dna.When the host was prokaryotic organism such as intestinal bacteria, the competent cell that can absorb DNA can be used CaCl in exponential growth after date results 2Method is handled, and used step is well-known in this area.Alternative is to use MgCl 2If desired, transforming also the method for available electroporation carries out.When the host is an eukaryote, can select following DNA transfection method for use: coprecipitation of calcium phosphate method, perhaps conventional mechanical method such as microinjection, electroporation, liposome packing etc.
By the recombinant DNA technology of routine, utilize polynucleotide sequence of the present invention to can be used to express or produce dna mismatch reparation protein 11 (Science, 1984 of reorganization; 224:1431).In general following steps are arranged:
(1). with the polynucleotide (or varient) of coding human DNA mismatch repair protein 11 of the present invention, or transform or the transduction proper host cell with the recombinant expression vector that contains these polynucleotide;
(2). in suitable medium, cultivate host cell;
(3). separation, protein purification from substratum or cell.
In step (2), according to used host cell, used substratum can be selected from various conventional substratum in the cultivation.Under the condition that is suitable for the host cell growth, cultivate.After host cell grows into suitable cell density, induce the promotor of selection with suitable method (as temperature transition or chemical induction), cell is cultivated for some time again.
In step (3), recombinant polypeptide can wrap and be expressed or be secreted into the extracellular in cell or on cytolemma.If desired, can utilize its physics, the separating by various separation methods with other characteristic and the albumen of purification of Recombinant of chemistry.These methods are well-known to those skilled in the art.These methods include, but are not limited to: conventional renaturation is handled, protein precipitant is handled (salt analysis method), centrifugal, the broken bacterium of infiltration, the combination of ultrasonication, super centrifugal, sieve chromatography (gel-filtration), adsorption chromatography, ion exchange chromatography, high performance liquid chromatography (HPLC) and other various liquid chromatography (LC) technology and these methods.
The antagonist of polypeptide of the present invention and this polypeptide, agonist and inhibitor can be directly used in disease treatment, for example, can treat malignant tumour, adrenal gland defect, tetter, all kinds of inflammation, HIV infection and immunological disease etc.
For correctly transcribing of DNA, archaeal dna polymerase once in a while can catalysis can not form the mixing of wrong base of hydrogen bond with template.Mismatch repair system can give the chance of correcting a mistake for the second time.It is constitutive protein important in the mismatch repair system that dna mismatch is repaired albumen, and dna mismatch is repaired albumen all has existence in a lot of organisms, and for example, people's MLHl (MutL homologue-1) albumen is exactly that dna mismatch is repaired albumen.All dna mismatches are repaired albumen and are all contained a conservative sequence fragment, and the sudden change of this sequence fragment can make the protein function forfeiture.Therefore, contain dna mismatch and repair the polypeptide expression of albumen distinguished sequence and will influence correctly transcribing of DNA unusually, and further cause some disease such as tumour, dysplasia disease, inflammation etc.
This shows that the abnormal expression that dna mismatch of the present invention is repaired protein 11 will produce various diseases especially tumour, fetal development disorders, dysplasia disease, inflammation, these diseases include but not limited to:
The tumour of various tissues: cancer of the stomach, liver cancer, lung cancer, the esophageal carcinoma, mammary cancer, leukemia, lymphoma, thyroid tumor, hysteromyoma, neuroblastoma, astrocytoma, ependymoma, glioma, colorectal carcinoma, malignant histocytosis, melanoma, teratoma, sarcoma, adrenal carcinoma, bladder cancer, osteocarcinoma, osteosarcoma, myelomatosis, bone marrow cancer, the cancer of the brain, uterus carcinoma, carcinoma of endometrium, carcinoma of gallbladder, colorectal carcinoma, thymus neoplasms, nasal cavity and tumor of sinus of nose, nasopharyngeal carcinoma, laryngocarcinoma, tracheal neoplasm, mesothelioma of pleura, fibroma, fibrosarcoma, lipoma, liposarcoma, leiomyoma
Fetal development disorders: congenital miscarriage, cleft palate, deficiency of skeletal limb, limbs dysdifferentiation, hyaline membrane disease, atelectasis, polycystic kidney, double ureter, latent, congenital inguinal hernia, duplex uterus, vaginal atresia, hypospadia, hermaphroditism, atrial septal defect, ventricular septal defect, pulmonic stenosis, patent ductus arteriosus, neural tube defect, congenital hydrocephalus, iridocoloboma, congenital cataract, congenital glaucoma or cataract, congenital deafness
Dysplasia disease: mental retardation, cerebral plasy, cerebral dysgenesis, dysnoesia, familial nuclei of cranial nerves underdevelopment syndromes, stravismus, skin, fat and amyoplasia disease such as congenital cutis laxa, senium praecox, congenital dyskeratosis, various metabolic defects such as various amino acid metabolism defective disease, cretinism, nanism, the slow disease of sexual development
Various inflammation: atopic reaction, adult respiratory distress syndrome, lung eosinophilia, rheumatoid arthritis, similar rheumatism sample sacroiliitis, osteoarthritis, cholecystitis, glomerulonephritis, dermatomyositis, polymyositis, Addison's disease, louis-Bar syndrome, Bloom syndrome, tint permanence xeroderma
The abnormal expression that dna mismatch of the present invention is repaired protein 11 also will produce some heredity, blood disease and disease of immune system etc.
The antagonist of polypeptide of the present invention and this polypeptide, agonist and inhibitor can be directly used in disease treatment, for example, can treat various diseases especially tumour, fetal development disorders, dysplasia disease, inflammation, some heredity, blood disease and disease of immune system etc.
The present invention also provides SCREENED COMPOUND to improve (agonist) or check the method that (antagonist) dna mismatch is repaired the medicament of protein 11 to identify.Agonist improves dna mismatch and repairs protein 11 biological function such as stimulate cellular proliferation, and antagonist prevention disorder such as the various cancer relevant with cell hyperproliferation with treatment.For example, can in the presence of medicine, the film preparation of mammalian cell or expressible dna mismatch repair protein 11 be repaired protein 11 with the dna mismatch of mark cultivate.Measure the medicine raising then or check this interactional ability.
The antagonist that dna mismatch is repaired protein 11 comprises antibody, compound, acceptor disappearance thing and the analogue etc. that filter out.The antagonist that dna mismatch is repaired protein 11 can be repaired protein 11 with dna mismatch and combine and eliminate its function, or suppresses the generation of this polypeptide, or combines with the avtive spot of this polypeptide and to make this polypeptide can not bring into play biological function.
In screening during as the compound of antagonist, dna mismatch can be repaired protein 11 and add during bioanalysis measures, dna mismatch is repaired between protein 11 and its acceptor interactional influence determine whether compound is antagonist by measuring compound.With the same quadrat method of above-mentioned SCREENED COMPOUND, can filter out the acceptor disappearance thing and the analogue of antagonist action.Can repair protein 11 bonded peptide molecule with dna mismatch can be incorporated into the rondom polypeptide storehouse that solid formation forms by the various amino acid that may make up by screening and obtain.During screening, generally tackle dna mismatch reparation protein 11 molecule and carry out mark.
The invention provides and use polypeptide, and fragment, derivative, analogue or their cell are as the method for antigen with production antibody.These antibody can be polyclonal antibody or monoclonal antibody.The present invention also provides the antibody of repairing the protein 11 antigenic determinant at dna mismatch.These antibody include, but is not limited to: the fragment that polyclonal antibody, monoclonal antibody, chimeric antibody, single-chain antibody, Fab fragment and Fab expression library produce.
The method that the available dna mismatch of the production of polyclonal antibody is repaired protein 11 direct injection immune animal (as rabbit, mouse, rat etc.) obtains, and multiple adjuvant can be used for the enhancing immunity reaction, includes but not limited to freund's adjuvant etc.The technology that the preparation dna mismatch is repaired the monoclonal antibody of protein 11 include but not limited to hybridoma technology (Kohler and Milstein.Nature, 1975,256:495-497), three knurl technology, people B-quadroma technology, EBV-hybridoma technology etc.With the variable region bonded chimeric antibody in human constant region and inhuman source can with existing technology production (Morrison et al, PNAS, 1985,81:6851).And the technology of existing manufacture order chain antibody (U.S.Pat No.4946778) also can be used for producing the single-chain antibody that anti-dna mismatch is repaired protein 11.
The antibody that anti-dna mismatch is repaired protein 11 can be used in the immunohistochemistry technology, and the dna mismatch that detects in the biopsy specimen is repaired protein 11.
Repair the also available labelled with radioisotope of protein 11 bonded monoclonal antibody with dna mismatch, inject in the body and can follow the tracks of its position and distribution.This radiolabeled antibody can be used as a kind of atraumatic diagnostic method and is used for the location of tumour cell and has judged whether transfer.
Antibody also can be used for designing the immunotoxin at a certain privileged sites in the body.As dna mismatch repair the protein 11 high-affinity monoclonal antibody can with bacterium or plant poison (as diphtheria toxin, ricin, abrine etc.) covalent attachment.A kind of usual method is with sulfydryl linking agent such as SPDP, attacks the amino of antibody, by the exchange of disulfide linkage, toxin is incorporated on the antibody, and this hybrid antibody can be used for killing dna mismatch and repairs the protein 11 positive cells.
Antibody among the present invention can be used for treating or prevention is repaired the relevant disease of protein 11 with dna mismatch.The antibody that gives suitable dosage can stimulate or the generation or the activity of blocking dna mismatch repair protein 11.
The invention still further relates to diagnostic testing process quantitative and detection and localization dna mismatch reparation protein 11 level.These tests are known in the art, and comprise that FISH measures and radioimmunoassay.The dna mismatch that is detected in the test is repaired the protein 11 level, can repair the importance of protein 11 in various diseases and be used to diagnose dna mismatch to repair the disease that protein 11 works with the dna mismatch that lays down a definition.
Polypeptide of the present invention also can be used as the peptide spectrum analysis, for example, the polypeptide available physical, chemistry or enzyme carry out the specificity cutting, and carries out the two-dimentional or three-dimensional gel electrophoresis analysis of one dimension, be more preferably and carry out mass spectroscopy.
The polynucleotide of coding DNA mismatch repair protein 11 also can be used for multiple therapeutic purpose.Gene therapy technology can be used for treating because dna mismatch is repaired the nothing expression of protein 11 or cell proliferation, growth or the metabolic disturbance due to unusual/non-activity expression.The gene therapy vector (as virus vector) of reorganization can be designed for the dna mismatch of expressing variation and repair protein 11, repairs the protein 11 activity to suppress endogenic dna mismatch.For example, it can be that the dna mismatch that shortens, lacked signal conduction function territory is repaired protein 11 that a kind of dna mismatch of variation is repaired protein 11, though can combine with the substrate in downstream, lacks signaling activity.Therefore the gene therapy vector of reorganization can be used for treating the disease that dna mismatch is repaired protein 11 expression or active caused by abnormal.Deriving from viral expression vector such as retrovirus, adenovirus, adeno-associated virus (AAV), hsv, parvovirus etc. can be used for the polynucleotide of coding DNA mismatch repair protein 11 are transferred in the cell.The method of recombinant viral vector that structure carries the polynucleotide of coding DNA mismatch repair protein 11 is found in existing document (Sambrook, et al.).The polynucleotide of coding DNA mismatch repair protein 11 of recombinating in addition can be packaged in the liposome and be transferred in the cell.
Polynucleotide import tissue or intracellular method comprises: directly be injected into polynucleotide in the in-vivo tissue; Or external by carrier (as virus, phage or plasmid etc.) earlier with the polynucleotide transfered cell in, again cell is transplanted in the body etc.
The inhibition dna mismatch repairs the oligonucleotide (comprising sense-rna and DNA) of protein 11 mRNA and ribozyme also within the scope of the invention.Ribozyme is the enzyme sample RNA molecule that a kind of energy specificity is decomposed specific RNA, and its mechanism of action is to carry out the endonuclease effect after ribozyme molecule and the hybridization of complementary target RNA-specific.The RNA of antisense and DNA and ribozyme can obtain with existing any RNA or DNA synthetic technology, as the technology widespread use of solid phase phosphoamide chemical synthesis synthetic oligonucleotide.Antisense rna molecule can be transcribed acquisition by the dna sequence dna of this RNA that encodes in external or body.This dna sequence dna has been incorporated into the downstream of rna polymerase promoter of carrier.In order to increase the stability of nucleic acid molecule, available several different methods is modified it, and as increasing the sequence length of both sides, the connection between the ribonucleoside is used phosphoric acid thioester bond or peptide bond but not phosphodiester bond.
The polynucleotide of coding DNA mismatch repair protein 11 can be used for repairing with dna mismatch the diagnosis of the relative disease of protein 11.The polynucleotide of coding DNA mismatch repair protein 11 can be used for detecting the unconventionality expression that expression that dna mismatch repairs protein 11 dna mismatch whether or under morbid state is repaired protein 11.Dna sequence dna as coding DNA mismatch repair protein 11 can be used for biopsy specimen is hybridized to judge the expression situation of dna mismatch reparation protein 11.Hybridization technique comprises the Southern blotting, Northern blotting, in situ hybridization etc.These technological methods all are disclosed mature technologies, and relevant test kit all can obtain from commercial channels.Part or all of polynucleotide of the present invention can be used as probe stationary on microarray (Microarray) or DNA chip (being called " gene chip " again), is used for analyzing the differential expression analysis and the gene diagnosis of tissue gene.Repair the special primer of protein 11 with dna mismatch and carry out the transcription product that RNA-polymerase chain reaction (RT-PCR) amplification in vitro also can detect dna mismatch reparation protein 11.
The sudden change that detects dna mismatch reparation protein 11 gene also can be used for diagnosing dna mismatch to repair the relevant disease of protein 11.The form that dna mismatch is repaired the protein 11 sudden change comprises that to repair point mutation that the protein 11 dna sequence dna compares, transposition, disappearance, reorganization and other any unusual etc. with the normal wild type dna mismatch.Available existing technology such as Southern blotting, dna sequence analysis, PCR and in situ hybridization detect sudden change.In addition, sudden change might influence proteic expression, therefore can judge indirectly that with Northern blotting, Western blotting gene has or not sudden change.
Sequence of the present invention identifies it also is valuable to karyomit(e).This sequence can be specifically at certain bar human chromosome particular location and and can with its hybridization.At present, need to identify the concrete site of each gene on the karyomit(e).Now, have only chromosomal marker thing seldom to can be used for the marker chromosomes position based on actual sequence data (repetition polymorphism).According to the present invention, for these sequences are associated with disease related gene, its important the first step is positioned these dna sequence dnas on the karyomit(e) exactly.
In brief, prepare PCR primer (preferred 15-35bp), sequence can be positioned on the karyomit(e) according to cDNA.Then, these primers are used for the somatocyte hybrid cell that the PCR screening contains each bar human chromosome.Have only those hybrid cells that contain corresponding to the people's gene of primer can produce the fragment of amplification.
The PCR localization method of somatocyte hybrid cell is that DNA is navigated to concrete chromosomal quick method.Use Oligonucleolide primers of the present invention,, can utilize one group to realize inferior location from specific chromosomal fragment or a large amount of genomic clone by similar approach.Other the similar strategy that can be used for chromosomal localization comprises in situ hybridization, uses the karyomit(e) prescreen and the hybridization preliminary election of the airflow classification of mark, thereby makes up the special cDNA storehouse of karyomit(e).
The cDNA clone is carried out fluorescence in situ hybridization (FISH) with Metaphase Chromosome, can in a step, accurately carry out chromosomal localization.The summary of this technology is referring to Verma etc., Human Chromosomes:a Manualof Basic Techniques, Pergamon Press, New York (1988).
In case sequence is positioned to chromosome position accurately, the physical location of this sequence on karyomit(e) just can be associated with the gene map data.These data for example are found in, V.Mckusick, MendelianInheritance in Man (can by with the online acquisition of Johns Hopkins University Welch Medical Library).Can pass through linkage analysis then, determine gene and navigated to relation between the disease on the chromosomal region already.
Then, need to measure ill and not cDNA between diseased individuals or genome sequence difference.If observe certain sudden change in some or all of diseased individuals, and this sudden change is not observed in any normal individual, then this sudden change may be the cause of disease of disease.More ill and diseased individuals not is usually directed at first seek the variation of structure in the karyomit(e), as from the horizontal visible of karyomit(e) or use based on detectable disappearance of the PCR of cDNA sequence or transposition.Resolving power according to present physical mapping and assignment of genes gene mapping technology, being accurately positioned to the cDNA of the chromosomal region relevant with disease, can be a kind of (the supposing that 1 megabasse mapping resolving power and every 20kb are corresponding to a gene) between 50 to 500 potential Disease-causing genes.
Polypeptide of the present invention, polynucleotide and stand-in thereof, agonist, antagonist and inhibitor and suitable pharmaceutical carrier combination back can be used.These carriers can be water, glucose, ethanol, salt, damping fluid, glycerine and their combination.Composition comprises the polypeptide or the antagonist of safe and effective amount and carrier and the vehicle that does not influence effect of drugs.These compositions can be used as medicine and are used for disease treatment.
The present invention also provides medicine box or the test kit that contains one or more containers, and one or more medicinal compositions compositions of the present invention are housed in the container.With these containers, can have by the given indicative prompting of government authorities of making, using or selling medicine or biological products, the government authorities that this prompting reflects production, uses or sells permits it to use on human body.In addition, polypeptide of the present invention can be used in combination with other treatment compound.
Pharmaceutical composition can be with mode administration easily, as by in part, intravenously, intraperitoneal, intramuscular, subcutaneous, the nose or the route of administration of intracutaneous.Dna mismatch is repaired protein 11 and is come administration with the amount that treats and/or prevents concrete indication effectively.The amount and the dosage range that are applied to patient's dna mismatch reparation protein 11 will depend on many factors, as administering mode, person's to be treated healthiness condition and diagnostician's judgement.
Following accompanying drawing is used to illustrate specific embodiments of the present invention, and is not used in qualification by the scope of the invention that claims defined.
Fig. 1 is that dna mismatch of the present invention is repaired protein 11 at the 26-72 amino acid sequence homology comparison diagram of totally 47 amino acid and structure domain DNA mismatch repair protein characteristic sequence.The top sequence is that dna mismatch is repaired protein 11, and the below sequence is a structure domain DNA mismatch repair protein characteristic sequence.Same amino acid represents with monocase amino acid that between two sequences similar amino acid is represented with "+".
Fig. 2 is the polyacrylamide gel electrophoresis figure (SDS-PAGE) of separated DNA mismatch repair protein 11.11KDa is proteinic molecular weight.The arrow indication is isolated protein band.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, usually according to people such as normal condition such as Sambrook, molecular cloning: laboratory manual (New York:Cold SpringHarbor Laboratory Press, 1989) condition described in, or the condition of advising according to manufacturer.The clone of embodiment 1:DNA mismatch repair protein 11
Extract the total RNA of people's tire brain with guanidinium isothiocyanate/phenol/chloroform single stage method.From total RNA, separate poly (A) mRNA with Quik mRNA Isolation Kit (Qiegene company product).2ug po1y (A) mRNA forms cDNA through reverse transcription.CDNA fragment orientation is inserted on the multiple clone site of pBSK (+) carrier (Clontech company product) with Smart cDNA clone's test kit (available from Clontech), transforms DH5 α, bacterium forms the cDNA library.Measure all clones' 5 ' and 3 ' terminal sequence with Dyeterminate cycle reaction sequencing kit (Perkin-Elmer company product) and ABI 377 automatic sequencers (Perkin-Elmer company).CDNA sequence and the existing public dna sequence data storehouse (Genebank) measured are compared, found that the cDNA sequence of one of them clone 0847a09 is new DNA.By synthetic a series of primers the contained insertion cDNA fragment of this clone is carried out two-way mensuration.The result shows, the contained full-length cDNA of 0847a09 clone is 2453bp (shown in Seq ID NO:1), from 1500bp to 1805bp the open reading frame (ORF) of a 306bp, the new protein (shown in Seq ID NO:2) of encoding arranged.We are with this clone's called after pBS-0847a09, and encoded protein matter called after dna mismatch is repaired protein 11.
Embodiment 2:cDNA clone's domain analyses
With sequence and the encoded protein sequence thereof that dna mismatch of the present invention is repaired protein 11, use profilescan program (Basiclocal Alignment search tool) [Altschul, SF et al.J.Mol.Biol.1990 among the GCG; 215:403-10], carry out domain analyses at databases such as prosite.Dna mismatch of the present invention is repaired protein 11 has homology at 26-72 and structure domain DNA mismatch repair protein characteristic sequence, and homology the results are shown in Fig. 1, and homology is 0.28, must be divided into 13.30; Threshold value is 12.87.Embodiment 3: the gene of repairing protein 11 with RT-PCR method clones coding dna mismatch
Total RNA is a template with fetus brain cell, is that primer carries out the synthetic cDNA of reverse transcription reaction with oligo-dT, with behind the test kit purifying of Qiagene, carries out pcr amplification with following primer:
Primerl:5’-CAAACAAAAAACATCACAAGAAAG-3’(SEQ?ID?NO:3)
Primer2:5’-CAAATTCATTTTATTGCCAGGCAG-3’(SEQ?ID?NO:4)
Primer1 is the forward sequence that begins of 1bp that is positioned at the 5 ' end of SEQ ID NO:1;
Primer2 be SEQ ID NO:1 in 3 ' end reverse sequence.
The condition of amplified reaction: in the reaction volume of 50 μ l, contain 50mmol/L KCl, 10mmol/L Tris-Cl, (pH8.5), 1.5mmol/L MgCl 2, 200 μ mol/L dNTP, 10pmol primer, the Taq archaeal dna polymerase of 1U (Clontech company product).Go up by 25 cycles of following conditioned response at PE9600 type DNA thermal cycler (Perkin-Elmer company): 94 ℃ of 30sec; 55 ℃ of 30sec; 72 ℃ of 2min.When RT-PCR, establish the blank negative contrast of positive contrast of β-actin and template simultaneously.Amplified production is connected to (Invitrogen company product) on the pCR carrier with the test kit purifying of QIAGEN company with TA clone test kit.The dna sequence analysis result shows that the dna sequence dna of PCR product and the 1-2453bp shown in the SEQ ID NO:1 are identical.Embodiment 4:Northern blotting analyzing DNA mismatch repair protein 11 expression of gene:
Extract total RNA[Anal.Biochem 1987,162,156-159 with single stage method].This method comprises acid guanidine thiocyanate phenol-chloroform extracting.Promptly use 4M guanidinium isothiocyanate-25mM Trisodium Citrate, 0.2M sodium acetate (pH4.0) carries out homogenate to tissue, adds the phenol of 1 times of volume and the chloroform-primary isoamyl alcohol (49: 1) of 1/5 volume, and is centrifugal after mixing.The sucking-off aqueous phase layer adds Virahol (0.8 volume) and with the centrifugal RNA precipitation that obtains of mixture.With RNA precipitation 70% washing with alcohol that obtains, dry and soluble in water.With 20 μ g RNA, on 1.2% sepharose that contains 20mM 3-(N-morpholino) propanesulfonic acid (pH7.0)-5mM sodium acetate-1mM EDTA-2.2M formaldehyde, carry out electrophoresis.Be transferred on the nitrocellulose filter then.With α- 32P dATP prepares by random priming 32The dna probe of P-mark.Used dna probe is that the dna mismatch of pcr amplification shown in Figure 1 is repaired protein 11 coding region sequence (1500bp to 1805bp).Probe (about 2 * 10 with the 32P-mark 6Cpm/ml) spend the night in 42 ℃ of hybridization in a solution with the nitrocellulose filter that has shifted RNA, this solution comprises 50% methane amide-25mM KH 2PO 4(pH7.4)-5 * SSC-5 * Denhardt ' s solution and 200 μ g/ml salmon sperm DNAs.After the hybridization, filter membrane is washed 30min in 55 ℃ in 1 * SSC-0.1%SDS.Then, analyze with quantitative with Phosphor Imager.Embodiment 5: the vivoexpression of recombinant DNA mismatch repair protein 11, separation and purifying
According to SEQ ID NO:1 and coding region sequence shown in Figure 1, design a pair of specificity amplification primer, sequence is as follows:
Primer?3:5’-CCCCATATGATGCCTGTAATCCCAGCACTTTGG-3’(Seq?ID?No:5)
Primer4:5’-CATGGATCCTCAACATATAATTTGCAAGTATTT-3’(Seq?ID?No:6)
5 ' end of these two sections primers contains Nde I and BamH I restriction enzyme site respectively, be respectively the encoding sequence of target gene 5 ' end and 3 ' end thereafter, Nde I and BamH I restriction enzyme site are corresponding to expression vector plasmid pET-28b (+) (Novagen company product, Cat.No.69865.3) the selectivity restriction enzyme site on.With the pBS-0847a09 plasmid that contains the total length goal gene is template, carries out the PCR reaction.The PCR reaction conditions is: contain pBS-0847a09 plasmid 10pg, primer Primer-3 and Primer-4 among the cumulative volume 50 μ l and be respectively 10pmol, Advantage polymerase Mix (Clontech company product) 1 μ l.Loop parameter: 94 ℃ of 20s, 60 ℃ of 30s, 68 ℃ of 2min, totally 25 circulations.Respectively amplified production and plasmid pET-28 (+) are carried out double digestion with Nde I and BamH I, reclaim big fragment respectively, and connect with the T4 ligase enzyme.Connect product and transform, after the dull and stereotyped overnight incubation of the LB that contains kantlex (final concentration 30 μ g/ml), use the colony polymerase chain reaction (PCR) method screening positive clone, and check order with the big enterobacterial DH5 of Calcium Chloride Method α.Select the correct positive colony of sequence (pET-0847a09) with Calcium Chloride Method with recombinant plasmid transformed e. coli bl21 (DE3) plySs (Novagen company product).In the LB liquid nutrient medium that contains kantlex (final concentration 30 μ g/ml), host bacterium BL21 (pET-0847a09) is cultured to logarithmic phase at 37 ℃, adds IPTG to final concentration 1mmol/L, continues to cultivate 5 hours.Centrifugal collection thalline, through the broken bacterium of ultrasonic wave, centrifugal collection supernatant, with carrying out chromatography with 6 Histidines (6His-Tag) bonded affinity column His.Bind Quick Cartridge (Novagen company product), the target protein dna mismatch that has obtained purifying is repaired protein 11.Through the SDS-PAGE electrophoresis, obtain a single band (Fig. 2) at the 11KDa place.This band is transferred on the pvdf membrane carries out the n terminal amino acid sequential analysis with the Edams hydrolysis method, 15 amino acid of N-end hold 15 amino-acid residues identical with the N-shown in the SEQ ID NO:2 as a result.Embodiment 6 anti-dna mismatches are repaired the protein 11 production of antibodies
Repair the specific polypeptide of protein 11 with the synthetic following dna mismatch of Peptide synthesizer (PE company product):
NH 2-Met-Pro-Val-Ile-Pro-Ala-Leu-Trp-Glu-Ala-Arg-Ala-Gly-Arg-Ser-COOH(SEQ?ID?NO:7)。Form compoundly with hemocyanin and bovine serum albumin coupling this polypeptide respectively, method is referring to Avrameas, et al.Immunochemistry, 1969; 6:43.Add the complete Freund's adjuvant immunizing rabbit with the above-mentioned hemocyanin polypeptide complex of 4mg, add the incomplete Freund's adjuvant booster immunization once with the hemocyanin polypeptide complex again after 15 days.Employing is done the titre that ELISA measures antibody in the rabbit anteserum through the titer plate of 15 μ g/ml bovine serum albumin polypeptide complex bag quilts.From the rabbit anteserum of antibody positive, separate total IgG with albumin A-Sepharose.Polypeptide is incorporated on the Sepharose4B post of cyanogen bromide-activated, from total IgG, separates anti-peptide antibody with affinity chromatography.Immuno-precipitation proof antibody purified can be repaired protein 11 with dna mismatch specifically and be combined.Embodiment 7: polynucleotide passage of the present invention is as the application of hybridization probe
Picking out suitable oligonucleotide fragment from polynucleotide of the present invention is of use in many ways as hybridization probe, as can whether containing polynucleotide sequence of the present invention and detect the homologous polynucleotide sequence to identify it with the healthy tissues of different sources or the genome or the hybridization of cDNA library of pathological tissue with this probe, whether further also available this probe in detecting polynucleotide sequence of the present invention or the expression of its homologous polynucleotide sequence in healthy tissues or pathological tissue cell be unusual.
The purpose of present embodiment is to pick out suitable oligonucleotide fragment as hybridization probe from polynucleotide SEQ ID NO:1 of the present invention, and identifies in some tissues whether contain polynucleotide sequence of the present invention or its homologous polynucleotide sequence with the filter hybridization method.The filter hybridization method comprises dot blotting, Southern blotting, Northern blotting and copy method etc., and they all are that polynucleotide sample to be measured is fixed on use essentially identical step crossover in back on the filter membrane.These identical steps are: the filter membrane of having fixed sample at first carries out prehybridization with the hybridization buffer that does not contain probe, so that nonspecific combining site suppressed by vector of sample and synthetic polymer institute are saturated on the filter membrane.Prehybridization solution is contained the hybridization buffer replacement of label probe then, and insulation makes probe and target nucleic acid hybridization.After the hybridization step, the probe in the hybridization is not removed by a series of film steps of washing.Present embodiment utilizes the film condition of washing (as than low salt concn and higher temperature) of higher-strength, so that hybrid context reduces and only keep the signal of high specificity.The probe that present embodiment is selected for use comprises two classes: first kind probe be fully with the identical or complementary oligonucleotide fragment of polynucleotide SEQ ID NO:1 of the present invention; The second class probe is part and the identical or complementary oligonucleotide fragment of polynucleotide SEQ ID NO:1 of the present invention.Present embodiment selects for use dot blotting that sample is fixed on the filter membrane, higher-strength wash under the film condition, the hybridization specificity of first kind probe and sample is the strongest and kept.One, probe selects for use
From polynucleotide SEQ ID NO:1 of the present invention, select oligonucleotide fragment as hybridization probe, the several aspects that should follow following principle and need to consider: 1, the probe size preferable range is a 18-50 Nucleotide; 2, GC content is 30%-70%, and surpassing then, non-specific hybridization increases; 3, probe interior should not have complementary region; 4, what meet above condition can be used as the primary election probe, further do the computer sequential analysis then, comprise this primary election probe is carried out homology relatively with its source sequence area (being SEQ ID NO:1) and other known genome sequence and complementary district thereof respectively, if with the homology in non-target molecule zone greater than 85% or there are 15 continuous bases of surpassing identical, then this primary election probe is general just should not use; 5, whether the primary election probe finally is chosen to be the probe of actual application value also should further be determined by experiment.
Select and synthetic following two probes after finishing the analysis of above each side:
Probe 1 (probel) belongs to first kind probe, with complete homology of gene fragment or the complementation (41Nt) of SEQ ID NO:1
5’-TGCCTGTAATCCCAGCACTTTGGGAGGCCCGGGCAGGAAGA-3’(SEQ?ID?NO:8)
Probe 2 (probe2) belongs to the second class probe, is equivalent to gene fragment or its complementary segmental replacement mutant nucleotide sequence (41Nt) of SEQ ID NO:1:
5’-TGCCTGTAATCCCAGCACTGTGGGAGGCCCGGGCAGGAAGA-3’(SEQ?ID?NO:9)
Other unlisted common agents and the compound method thereof relevant with following concrete experimental procedure please refer to document: DNA PROBES G.H.Keller; M.M.Manak; Stockton Press, 1989 (USA) and molecular cloning laboratory manual books more commonly used are as works such as " molecular cloning experiment guide " (second edition in 1998) [U.S.] Sa nurse Brooker, Science Press.
Specimen preparation: 1, from fresh or frozen tissue, extract DNA
Step: 1) the fresh or fresh normal liver tissue that thaws is put into the plate that is immersed on ice and fills phosphate buffered saline buffer (PBS).With scissors or scalpel tissue is cut into small pieces.Should keep organizing moistening in the operation.2) with 1000g centrifugal chopper tissue 10 minutes.3) with cooled homogenate damping fluid (0.25mol/L sucrose; 25mmol/LTris-HCl, pH7.5; 25mmol/LnaCl; 25mmol/L MgCl 2) precipitation that suspends (approximately 10ml/g).4) 4 ℃ with electric homogenizer homogenate tissue suspension at full speed, until tissue by broken fully.5) 1000g is centrifugal 10 minutes.6) with re-suspended cell precipitation (the initial tissue sample of every 0.1g adds 1-5ml), centrifugal 10 minutes again with 1000g.7) with the resuspended precipitation of lysis buffer (the initial tissue sample of every 0.1g adds 1ml), connect following phenol extraction process then.2, the phenol extraction process of DNA
Step: 1) wash cell, centrifugal 10 minutes of 1000g with the cold PBS of 1-10ml.2) with the sedimentary cell (1 * 10 of cold cell pyrolysis liquid resuspension 8The minimum of applications 100ul lysis buffer of cell/ml).3) adding SDS is 1% to final concentration, if before re-suspended cell SDS is directly joined in the cell precipitation, cell may form big agglomerate and be difficult to fragmentation, and the overall yield that reduces.This point is in extracting＞10 7Especially severe during cell.4) add Proteinase K to final concentration 200ug/ml.5) 50 ℃ of insulation reaction 1 hour or 37 ℃ gently jolting spend the night.6) use equal-volume phenol: chloroform: primary isoamyl alcohol (25: 24: 1) extracting, in little centrifuge tube centrifugal 10 minutes.Two corresponding clear separation, otherwise carry out centrifugal again.7) water is transferred to new pipe.8) use the equal-volume chloroform: primary isoamyl alcohol (24: 1) extracting, centrifugal 10 minutes.9) water that will contain DNA is transferred to new pipe.Carry out purifying and the ethanol sedimentation of DNA then.3, the purifying of DNA and ethanol sedimentation
Step: 1) 1/10 volume 2mol/L sodium-acetate and 2 times of cold 100% ethanol of volume are added in the dna solution mixing.-20 ℃ of placements 1 hour or to spending the night.2) centrifugal 10 minutes.3) careful sucking-off or pour out ethanol.4) with 70% cold ethanol 500ul washing precipitation, centrifugal 5 minutes.5) careful sucking-off or pour out ethanol.With the cold washing with alcohol precipitation of 500ul, centrifugal 5 minutes.6) careful sucking-off or pour out ethanol is inverted on thieving paper then residual ethanol is flow to end.Dry air 10-15 minute, so that the volatilization of surperficial ethanol.Note not making the precipitation complete drying, otherwise dissolve again than difficulty.7) with small volume TE or the resuspended DNA precipitation of water.The low speed vortex vibrates or uses the dropper pressure-vaccum, increases TE gradually simultaneously, is mixed to DNA and fully dissolves, every 1-5 * 10 6Cell extracted approximately adds 1ul.
Below the 8-13 step only be used for must removing when depolluting, otherwise can directly carry out the 14th step.8) RNA enzyme A is added in the dna solution, final concentration is 100ug/ml, and 37 ℃ are incubated 30 minutes.9) add SDS and Proteinase K, final concentration is respectively 0.5% and 100ug/ml.37 ℃ are incubated 30 minutes.10) use isopyknic phenol: chloroform: primary isoamyl alcohol (25: 24: 1) extractive reaction liquid, centrifugal 10 minutes.11) carefully shift out water, use isopyknic chloroform: primary isoamyl alcohol (24: 1) extracting again, centrifugal 10 minutes.12) carefully shift out water, add 1/10 volume 2mol/L sodium-acetate and the cold ethanol of 2.5 volumes, mixing put-20 ℃ 1 hour.13) with 70% ethanol and 100% washing with alcohol precipitation, dry air, resuspended nucleic acid, process is with the 3-6 step.14) measure A 260And A 280To detect purity and the productive rate of DNA.15) deposit in-20 ℃ after the packing.The preparation of sample film:
1) get 4 * 2 suitably nitrocellulose filters (NC film) of size, mark point sample position and sample number thereon gently with pencil, each probe needs two NC films, so that wash film with high strength condition and strength condition respectively in the experimental procedure of back.
2) draw and contrast respectively 15 microlitres, put on the sample film, dry at room temperature.
3) place infiltration that 0.1mol/LNaOH is arranged, last 5 minute of filter paper (twice) of 1.5mol/LNaCl, drying to place to soak into has 0.5mol/L Tris-HCl (pH7.0), last 5 minute of filter paper (twice) of 3mol/LNaCl, dries.
4) be sandwiched in the clean filter paper, wrap, 60-80 ℃ of vacuum-drying 2 hours with aluminium foil.
The mark of probe
1) 3 μ lProbe (0.1OD/10 μ l) add 2 μ lKinase damping fluids, 8-10uCi γ- 32P-dATP+2UKinase is to add to final volume 20 μ l.
2) 37 ℃ are incubated 2 hours.
3) add the tetrabromophenol sulfonphthalein indicator (BPB) of 1/5 volume.
4) cross Sephadex G-50 post.
5) to having 32Before washing out, P-Probe begins to collect first peak (available Monitor monitoring).
6) 5/pipe, collect the 10-15 pipe.
7) monitor isotopic weight with liquid glimmer instrument
8) merge and to be required preparation behind the collection liquid of first peak 32P-Probe (second peak for free γ- 32P-dATP).
Prehybridization
The sample film is placed plastics bag, add 3-10mg prehybridization solution (10 * Denhardt, s; 6 * SSC, 0.1mg/mlCT DNA (calf thymus DNA).), seal sack after, 68 ℃ of water-baths were shaken 2 hours.
Hybridization
Plastics bag is cut off one jiao, adds the probe prepare, seal sack after, 42 ℃ of water-baths are shaken and are spent the night.
Wash film: high strength is washed film:
1) good sample film has been hybridized in taking-up.
2) 2 * SSC among the 0.1%SDS, washes 15 minutes (2 times) for 40 ℃.
3) 0.1 * SSC among the 0.1%SDS, washes 15 minutes (2 times) for 40 ℃.
4) 0.1 * SSC among the 0.1%SDS, washes 30 minutes (2 times) for 55 ℃, and room temperature is dried.Low strength is washed film:
1) good sample film has been hybridized in taking-up.
2) 2 * SSC among the 0.1%SDS, washes 15 minutes (2 times) for 37 ℃.
3) 0.1 * SSC among the 0.1%SDS, washes 15 minutes (2 times) for 37 ℃.
4) 0.1 * SSC among the 0.1%SDS, washes 15 minutes (2 times) for 40 ℃, and room temperature is dried.
X-light autography:
-70 ℃, X-light autography (the compressing tablet time decides according to hybridization spot radioactivity is strong and weak).
Experimental result:
Adopt low strength to wash the hybrid experiment that the film condition is carried out, more than two strong and weak not obviously differences of probe hybridization spot radioactivity; And adopting high strength to wash the hybrid experiment that the film condition is carried out, the hybridization spot radioactive intensity of probe 1 obviously is better than the radioactive intensity of another probe hybridization spot.Thereby available probe 1 is qualitative and analyze existence and the differential expression of polynucleotide of the present invention in different tissues quantitatively.
Sequence table
(1) general information:
(ⅱ) denomination of invention: dna mismatch is repaired protein 11 and encoding sequence thereof
(ⅲ) sequence number: 9
(2) information of SEQ ID NO:1:
(ⅰ) sequence signature:
(A) length: 2453bp
(B) type: nucleic acid
(C) chain: two strands
(D) topological framework: linearity
(ⅱ) molecule type: cDNA
( ⅹⅰ ) ：SEQ ID NO:1： 1 CAAACAAAAAACATCACAAGAAAGAAAAATACAGAATAGTATCTGTTATAAATACAGATG 61 TAAAAATACTCAACAAAATACTAGCAAACATATCTAAAAACATGAAAAGGATTATACACC 121 ATGATCAATTGCAGTTTATTCCAGACATGCAGTGTTGGTTTAATATATGAAAATCAATTA 181 ATATAATACTACATATTAATAGAATAAAGGGCAAAACCGCATAATCATCCCAATAGAAGC 241 AGAAAAGCAATTGACAAAATCCAACACCCTTTCATGAAGATAGGTCAATTCAGATTATCC 301 AGTCAACAAACTGTCAATAGAAGAGAACTTTCTCAACCTGATAGAGGCATCATTAAGTAA 361 CGTATTACTTAATGATCAAATATGGAAAGCTGTTTCCGTATGATCGGGAACAAGGCAAAA 421 TTGCCCACTCTTACCACTTTACTCACTGAAAGTTCTAACTAGGGCAATTAGGCAAGAAGA 481 GCAAATAAAAAGCATTCGTATTGGAAAGGAAGATGTAACATGATACTTATTCACAGATGA 541 CCTAATATATATTAAAAATTCTAAGGGATTCACACACACACAAAAAAAACTTACTAGAAA 601 ACTAATAAACAAGTACAGCAAGGTTGCAGAATACAAGATCAATATACAAAAGTCAGTTGT 661 ATTTCTATACACTAGCAATGGACAATTCAAAAATGAAATTAAGAAAAAATACCATTGATA 721 ATAGTATCACAAAGATTAAAATACATAGGGATGAATTTAACAAAAGAAGCATAAAACTTA 781 TTCTCTAAAACCTATAAAAATTATTCAAAAAATTAAAGGAGACTTATATAAATGAATACT 841 TAATGTTTATGATTTTGAAGACTTCATTTTGTTAAGATGGCAATAATCCCCAAATTGATT 901 TACAGATTCAGTGCAATCTCTGTAAAGATCTTAGCTGCCTTTTAAAAATTATTTTGCAGA 961 AATGTACAAGCTGATCTTAAAATTAATATGGAAAATGCAAGGCACCCAAAATAGCCAAAA1021 CAATCTTGAAAAAGGAGAACAAAGTTGAAGGACTTACACTTGTTAAATTCAGAATTTAAC1081 TTCAAAGCCACAGTAATCAAACTATGGTACTGGCATAGGGATAGACAATAGACATATAGA1141 TCAATGAGAGTCAAGACATACACCTACAGTTTTATGGGCAGATGATTTTCAAAAGGGTGC1201 CAAGACAATTCAATAAGAAAAGAATAGTCTTTTCAACAAAAGTTTGGACAATTGAATAAC1261 CACCTACAGAAGCTGAACTACCTCACACCATATTTGAAAAATATCTAATCTGATCAAAGA1321 TCTAAATGCAGGTCTAAAAAACTTAGAATAAAACACAGGCATGAGTCTTCATGACCTTTG1381 GTCAGTCAGTAGTTTCCCCTGTATGACACCTAAAGCACAAGTAGCCAAAGACTAAATAGA1441 TACTTTGGATTCCATCAAAATTAAAAAACTTTTGTGCTTTAGGCCACGTGCAGTGGCTCA1501 TGCCTGTAATCCCAGCACTTTGGGAGGCCCGGGCAGGAAGATCGCTTGAGGCCAGGAGTT1561 TGAGACCAGCTGGCCAACATCGCGAAACCCCATCCTTACTAAAAATACAAAAATTAGCCA1621 TGCTTGATGGTGTGTGCTTGTGGTCCCAGCTACTTAGGAGGCTGAAGCAGGAGGATCACT1681 TGAACTGGGGAGGTGGAGGTAGAGGTTGCAGTGAGCCGGGATTAAGCCGCTGCAAAAGAA1741 CATTATTAAGAAAGTTAAGAGATAAGTCAGAGTATGGGAGAAAATACTTGCAAATTATAT1801 GTTGATAAGGGTCTTACATCTAAAATACATGTTGAACAAAGTTACAACAAATTTAGTTCA1861 ATTTAGATCGAATTGGCTTTTATTTGCGATTCATGAATTGGGGCAGCATCCCATTCTATA1921 AAATAGAGTAAGAATTTCCACAGGGCATGACAGAACAGTGGGTTCTGTAAAGTAGGAACA1981 AAAAACCCAGAAACAATAGAAAAAAGTGGGGATCTCAGCCGCTGGGGTGGCGGGAGGAGC2041 GGCAACAGCCAGGTAGCCCAGCTCCACAGAGGCTCACACACCAGGGCTTGCAAGCACTGA2101 GCACCAGGCAGGTGCCTTTCCTGCTGCCAAGAAGCCCAAGTGGAAAGTCAGCTCAGCAGA2161 AGGGGAAGTGAAGGAAGAGCCCAAGAGGAGATTCTTGCAATTGTCATCTAAACCTGCTCC2221 TACAAAAGCAGAAATGAAGCCAAAAAAGGCAGTCATGAAAGGATAAATCTTCAGACACAA2281 AGTGCAAACCGAAGGGAAAAGGAGAACAAAAGGAAAACTGGCCAAAGTGGCTAACCAATA2341 AACTAAAGAAGACTTATCTGCAGAAAACAAAGAAACTAAAACCAAAGAGGGTCCTGCCTT2401 TGATGAAGGCTGAGGGAAAGAAGCCAAGTCTGCCTGGCAATAAAATGAATTTG
(3) information of SEQ ID NO:2:
(ⅰ) sequence signature:
(A) length: 101 amino acid
(B) type: amino acid
(D) topological framework: linearity
(ⅱ) molecule type: polypeptide
(ⅹ ⅰ) sequence description: SEQ ID NO:2:1 Met Pro Val Ile Pro Ala Leu Trp Glu Ala Arg Ala Gly Arg Ser16 Leu Glu Ala Arg Ser Leu Arg Pro Ala Gly Gln His Arg Glu Thr31 Pro Ser Leu Leu Lys Ile Gln Lys Leu Ala Met Leu Asp Gly Val46 Cys Leu Trp Ser Gln Leu Leu Arg Arg Leu Lys Gln Glu Asp His61 Leu Asn Trp Gly Gly Gly Gly Arg Gly Cys Ser Glu Pro Gly Leu76 Ser Arg Cys Lys Arg Thr Leu Leu Arg Lys Leu Arg Asp Lys Ser91 Glu Tyr Gly Arg Lys Tyr Leu Gln Ile Ile Cys
(4) information of SEQ ID NO:3
(ⅰ) sequence signature
(A) length: 24 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:3:CAAACAAAAAACATCACAAGAAAG 24
(5) information of SEQ ID NO:4
(ⅰ) sequence signature
(A) length: 24 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:4:CAAATTCATTTTATTGCCAGGCAG 24
(6) information of SEQ ID NO:5
(ⅰ) sequence signature
(A) length: 33 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:5:CCCCATATGATGCCTGTAATCCCAGCACTTTGG 33
(7) information of SEQ ID NO:6
(ⅰ) sequence signature
(A) length: 33 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:6:CATGGATCCTCAACATATAATTTGCAAGTATTT 33
(8) information of SEQ ID NO:7:
(ⅰ) sequence signature:
(A) length: 15 amino acid
(B) type: amino acid
(D) topological framework: linearity
(ⅱ) molecule type: polypeptide
(ⅹ ⅰ) sequence description: SEQ ID NO:7:Met-Pro-Val-Ile-Pro-Ala-Leu-Trp-Glu-Ala-Arg-Ala-Gly-Arg-Ser 15
(9) information of SEQ ID NO:8
(ⅰ) sequence signature
(A) length: 41 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:8:TGCCTGTAATCCCAGCACTTTGGGAGGCCCGGGCAGGAAGA 41
(10) information of SEQ ID NO:9
(ⅰ) sequence signature
(A) length: 41 bases
(B) type: nucleic acid
(C) chain: strand
(D) topological framework: linearity
(ⅱ) molecule type: oligonucleotide
(ⅹ ⅰ) sequence description: SEQ ID NO:9:TGCCTGTAATCCCAGCACTGTGGGAGGCCCGGGCAGGAAGA 41

Claims (18)

1, a kind of isolated polypeptide-dna mismatch is repaired protein 11, it is characterized in that it includes: the polypeptide of the aminoacid sequence shown in the SEQ ID NO:2 or active fragments, analogue or the derivative of its polypeptide.
2, polypeptide as claimed in claim 1, the aminoacid sequence that it is characterized in that described polypeptide, analogue or derivative has the homogeny with the aminoacid sequence at least 95% shown in the SEQ ID NO:2.
3, polypeptide as claimed in claim 2 is characterized in that it comprises the polypeptide with the aminoacid sequence shown in the SEQ ID NO:2.
4, a kind of isolating polynucleotide, it is characterized in that described polynucleotide comprise be selected from down the group in a kind of:
(a) coding has the polynucleotide of the polypeptide of aminoacid sequence shown in the SEQ ID NO:2 or its fragment, analogue, derivative;
(b) with polynucleotide (a) complementary polynucleotide; Or
(c) with (a) or the polynucleotide of at least 70% homogeny (b) are arranged.
5, polynucleotide as claimed in claim 4 is characterized in that described polynucleotide comprise the polynucleotide that coding has aminoacid sequence shown in the SEQ IDNO:2.
6, polynucleotide as claimed in claim 4, the sequence that it is characterized in that described polynucleotide include the sequence of 1-2453 position among the sequence of 1500-1805 position among the SEQ ID NO:1 or the SEQ ID NO:1.
7, a kind of recombinant vectors that contains exogenous polynucleotide is characterized in that it is the recombinant vectors that is formed by the described polynucleotide of arbitrary claim among the claim 4-6 and plasmid, virus or vehicle expression vector establishment.
8, a kind of genetically engineered host cell that contains exogenous polynucleotide is characterized in that it is to be selected from following a kind of host cell:
(a) host cell that transforms or transduce with the described recombinant vectors of claim 7; Or
(b) host cell that transforms or transduce with the described polynucleotide of the arbitrary claim among the claim 4-6.
9, a kind of preparation method with the active polypeptide of dna mismatch reparation protein 11 is characterized in that described method comprises:
(a) under expressible dna mismatch repair protein 11 conditions, cultivate the described through engineering approaches host cell of claim 8;
(b) from culture, isolate and have dna mismatch and repair the active polypeptide of protein 11.
10, a kind of can with polypeptide bonded antibody, it is characterized in that described antibody is to repair protein 11 specificity bonded antibody with dna mismatch.
11, the compound of an analoglike or adjusting polypeptide active or expression is characterized in that they are simulation, promotion, antagonism or suppress the active compound that dna mismatch is repaired protein 11.
12, compound as claimed in claim 11 is characterized in that it is the polynucleotide sequence shown in the SEQ ID NO:1 or its segmental antisense sequences.
13, the described application of compound of a kind of claim 11, it is characterized in that described compound be used to regulate dna mismatch repair protein 11 in vivo, the method for external activity.
14, a kind of disease relevant or method of disease susceptibility of detecting with the described polypeptide of arbitrary claim among the claim 1-3, it is characterized in that it comprises the described polypeptide expression amount that detects, perhaps detect the activity of described polypeptide, perhaps detect and cause described expression of polypeptides amount or active unusual nucleotide diversity in the polynucleotide.
15, as the application of polypeptide as described in the arbitrary claim among the claim 1-3, it is characterized in that it is applied to the stand-in of screening DNA mismatch repair protein 11, agonist, antagonist or inhibitor; Perhaps be used for the peptide finger print identification.
16, as the application of the described nucleic acid molecule of arbitrary claim among the claim 4-6, it is characterized in that it is used for nucleic acid amplification reaction as primer, perhaps be used for hybridization, perhaps be used to make gene chip or microarray as probe.
17,, it is characterized in that repairing the pharmaceutical composition of protein 11 unusually relevant disease as diagnosis or treatment with dna mismatch with safe and effective dosage and pharmaceutically acceptable carrier composition with described polypeptide, polynucleotide or its stand-in, agonist, antagonist or inhibitor as the described polypeptide of arbitrary claim, polynucleotide or application of compound in claim 1-6 and 11.
18, the described polypeptide of arbitrary claim, polynucleotide or the application of compound among the claim 1-6 and 11, it is characterized in that being used for the treatment of as malignant tumour with described polypeptide, polynucleotide or compound, hemopathy, the medicine of HIV infection and immunological disease and all kinds of inflammation.
CN 99125733 1999-12-23 1999-12-23 Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide Pending CN1300769A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN 99125733 CN1300769A (en) 1999-12-23 1999-12-23 Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide
AU19890/01A AU1989001A (en) 1999-12-23 2000-12-18 A novel polypeptide-dna mismatch repair protein 11 and a polynucleotide encodingthe same
PCT/CN2000/000627 WO2001047988A1 (en) 1999-12-23 2000-12-18 A novel polypeptide-dna mismatch repair protein 11 and a polynucleotide encoding the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99125733 CN1300769A (en) 1999-12-23 1999-12-23 Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide

Publications (1)

Publication Number Publication Date
CN1300769A true CN1300769A (en) 2001-06-27

Family

ID=5284144

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99125733 Pending CN1300769A (en) 1999-12-23 1999-12-23 Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide

Country Status (3)

Country Link
CN (1) CN1300769A (en)
AU (1) AU1989001A (en)
WO (1) WO2001047988A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE273387T1 (en) * 1993-12-02 2004-08-15 Univ Johns Hopkins HUMAN MUTATOR GENE NMSH2 AND ITS LINK TO HEREDITARIAN NONPOLYPOUS COLOR RECTAL CARCINOMA
JPH08107797A (en) * 1994-10-13 1996-04-30 Japan Found Cancer Res Dna coding protein related to repair of mismatch of human dna
WO1999001550A1 (en) * 1997-07-03 1999-01-14 Dana-Farber Cancer Institute A method for detection of alterations in msh5
AUPO974597A0 (en) * 1997-10-10 1997-11-06 Rhone-Poulenc Agro Methods for obtaining plant varieties

Also Published As

Publication number Publication date
AU1989001A (en) 2001-07-09
WO2001047988A1 (en) 2001-07-05

Similar Documents

Publication Publication Date Title
CN1339601A (en) New polypeptide-nitrilase 30.36 and polynucleotide for encoding such polypeptide
CN1300769A (en) Polypeptide-DNA mismatch repair protein 11 and polynucleotide for codign this polypeptide
CN1300747A (en) Polypeptide-eucaryotic RNA combining region RNP-1 21 and polynucleotide for coding this polypeptide
CN1300761A (en) Polypeptide-RCCI protein 10 polynucleotide for coding this polypeptide
CN1301827A (en) New polypeptide-dihydrooratase 9 polynucleotide coding such polypeptide
CN1301819A (en) New polypeptide-human aminoacyl tRNA synthetase 10 and polynucleotide codign such polypeptide
CN1314390A (en) New polypeptide-human DNA mispairing repair protein 8 and polynucleotide for coding such polypeptide
CN1300735A (en) Polypeptide-ribosome 59 protein 26 and polynucleotide for coding this polypeptide
CN1361173A (en) New polypeptide heparin bindin 13.09 and polynucleotides encoding this polypeptide
CN1380395A (en) A polypeptide-deoxyribonucleic acid polymerase-11.55 and polynucleotide for coding this polypeptide
CN1300746A (en) Polypeptide-ribosom 57 protein 9 and polynucleotide for coding this polypeptide
CN1307123A (en) Polypeptide-GTP enzyme Rho family active site 27 and polynucleotide for coding said polypeptide
CN1300751A (en) Polypeptide-ribosome protein 11 and polynucleotide for coding this polypeptide
CN1380317A (en) A polypeptide-ribosomal protein SII-11.99 and polynucleotide for coding this polypeptide
CN1380309A (en) A polypeptide-high mobility component protein familia-11.44 and polynucleotide for coding this polypeptide
CN1301860A (en) New polypeptide-enolphospho pyruvic acid dependent saccharophosphoryl transferase 9 and polynucleotide coding such polypeptide
CN1301858A (en) New polypeptide-ATP synthetase 9 and polynucleotide coding such polypeptide
CN1324829A (en) New polypeptide ribosome protein 13 and polynucleotides for encoding same
CN1380307A (en) A polypeptide-ribosomal protein -9.57 and polynucleotide for coding said polypeptide
CN1301750A (en) New polypeptide-ribosome S11 protein 9 and polynucleotide coding such polypeptide
CN1301766A (en) New polypeptide-human protein hydrolase regulating protein 9 and polynucleotide coding such polypeptide
CN1322758A (en) New polypeptide human ribosomal protein 12 and its encoding polynucleotides
CN1311323A (en) New polypeptide-formamidopyrimidine-DNA glycosylase 37 and polynucleotide for coding such polypeptide
CN1382789A (en) Polypeptide-DNA polymerase -8.91 and polynucleotide for coding it
CN1324827A (en) New polypeptide DNA mismatch repair protein 10 and polynucleotides for encoding same

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication