CN101153336A - 检测dna甲基化程度的方法和试剂盒 - Google Patents
检测dna甲基化程度的方法和试剂盒 Download PDFInfo
- Publication number
- CN101153336A CN101153336A CNA2007100969763A CN200710096976A CN101153336A CN 101153336 A CN101153336 A CN 101153336A CN A2007100969763 A CNA2007100969763 A CN A2007100969763A CN 200710096976 A CN200710096976 A CN 200710096976A CN 101153336 A CN101153336 A CN 101153336A
- Authority
- CN
- China
- Prior art keywords
- dna sequence
- cancer
- restriction enzyme
- methylates
- dna
- 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.)
- Granted
Links
- 230000007067 DNA methylation Effects 0.000 title description 6
- 238000002405 diagnostic procedure Methods 0.000 title 1
- 108091008146 restriction endonucleases Proteins 0.000 claims abstract description 64
- 206010028980 Neoplasm Diseases 0.000 claims abstract description 60
- 108091028043 Nucleic acid sequence Proteins 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 52
- 201000011510 cancer Diseases 0.000 claims abstract description 49
- 230000011987 methylation Effects 0.000 claims abstract description 24
- 238000007069 methylation reaction Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 6
- 108020004414 DNA Proteins 0.000 claims description 51
- 210000002381 plasma Anatomy 0.000 claims description 39
- 238000012360 testing method Methods 0.000 claims description 32
- 238000003752 polymerase chain reaction Methods 0.000 claims description 28
- 238000001976 enzyme digestion Methods 0.000 claims description 25
- 206010073071 hepatocellular carcinoma Diseases 0.000 claims description 25
- 231100000844 hepatocellular carcinoma Toxicity 0.000 claims description 25
- 230000029087 digestion Effects 0.000 claims description 19
- 108010085238 Actins Proteins 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 208000002454 Nasopharyngeal Carcinoma Diseases 0.000 claims description 15
- 206010061306 Nasopharyngeal cancer Diseases 0.000 claims description 15
- 210000004369 blood Anatomy 0.000 claims description 15
- 239000008280 blood Substances 0.000 claims description 15
- 201000011216 nasopharynx carcinoma Diseases 0.000 claims description 15
- 238000003753 real-time PCR Methods 0.000 claims description 14
- 210000002966 serum Anatomy 0.000 claims description 14
- 102000013529 alpha-Fetoproteins Human genes 0.000 claims description 13
- 108010026331 alpha-Fetoproteins Proteins 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 108090000623 proteins and genes Proteins 0.000 claims description 7
- 108091093088 Amplicon Proteins 0.000 claims description 6
- 108700025716 Tumor Suppressor Genes Proteins 0.000 claims description 6
- 102000044209 Tumor Suppressor Genes Human genes 0.000 claims description 6
- 238000004393 prognosis Methods 0.000 claims description 5
- 210000003296 saliva Anatomy 0.000 claims description 5
- 210000002700 urine Anatomy 0.000 claims description 5
- 108700024394 Exon Proteins 0.000 claims description 4
- 208000036141 Viral hepatitis carrier Diseases 0.000 claims description 4
- 238000011534 incubation Methods 0.000 claims description 2
- 238000003149 assay kit Methods 0.000 claims 2
- 239000012634 fragment Substances 0.000 claims 2
- 230000008521 reorganization Effects 0.000 abstract 2
- 239000000523 sample Substances 0.000 description 34
- 102000004190 Enzymes Human genes 0.000 description 15
- 108090000790 Enzymes Proteins 0.000 description 15
- 210000004072 lung Anatomy 0.000 description 13
- 241000701044 Human gammaherpesvirus 4 Species 0.000 description 12
- 210000002784 stomach Anatomy 0.000 description 11
- 210000003734 kidney Anatomy 0.000 description 10
- 210000005075 mammary gland Anatomy 0.000 description 10
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical compound NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 9
- 210000002307 prostate Anatomy 0.000 description 8
- 210000003932 urinary bladder Anatomy 0.000 description 8
- 230000003321 amplification Effects 0.000 description 7
- 239000012472 biological sample Substances 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 208000000419 Chronic Hepatitis B Diseases 0.000 description 6
- 210000003679 cervix uteri Anatomy 0.000 description 6
- 208000002672 hepatitis B Diseases 0.000 description 6
- 230000001035 methylating effect Effects 0.000 description 6
- 210000001989 nasopharynx Anatomy 0.000 description 6
- 238000007855 methylation-specific PCR Methods 0.000 description 5
- 238000004445 quantitative analysis Methods 0.000 description 5
- 210000003238 esophagus Anatomy 0.000 description 4
- 210000004185 liver Anatomy 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 210000001672 ovary Anatomy 0.000 description 4
- 210000000496 pancreas Anatomy 0.000 description 4
- 238000007400 DNA extraction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 3
- 230000036470 plasma concentration Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000002271 resection Methods 0.000 description 3
- 102100034330 Chromaffin granule amine transporter Human genes 0.000 description 2
- FCKYPQBAHLOOJQ-UHFFFAOYSA-N Cyclohexane-1,2-diaminetetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)C1CCCCC1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 101000641221 Homo sapiens Chromaffin granule amine transporter Proteins 0.000 description 2
- 208000034578 Multiple myelomas Diseases 0.000 description 2
- 238000012408 PCR amplification Methods 0.000 description 2
- 206010035226 Plasma cell myeloma Diseases 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 210000001072 colon Anatomy 0.000 description 2
- 229940104302 cytosine Drugs 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 208000032839 leukemia Diseases 0.000 description 2
- 238000010369 molecular cloning Methods 0.000 description 2
- 239000002773 nucleotide Substances 0.000 description 2
- 125000003729 nucleotide group Chemical group 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 101800000504 3C-like protease Proteins 0.000 description 1
- LRSASMSXMSNRBT-UHFFFAOYSA-N 5-methylcytosine Chemical compound CC1=CNC(=O)N=C1N LRSASMSXMSNRBT-UHFFFAOYSA-N 0.000 description 1
- 102100036464 Activated RNA polymerase II transcriptional coactivator p15 Human genes 0.000 description 1
- 102000000905 Cadherin Human genes 0.000 description 1
- 108050007957 Cadherin Proteins 0.000 description 1
- 102100024458 Cyclin-dependent kinase inhibitor 2A Human genes 0.000 description 1
- 102000016928 DNA-directed DNA polymerase Human genes 0.000 description 1
- 108010014303 DNA-directed DNA polymerase Proteins 0.000 description 1
- 102000005721 Death-Associated Protein Kinases Human genes 0.000 description 1
- 108010031042 Death-Associated Protein Kinases Proteins 0.000 description 1
- 108700039691 Genetic Promoter Regions Proteins 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 206010021703 Indifference Diseases 0.000 description 1
- 238000010824 Kaplan-Meier survival analysis Methods 0.000 description 1
- 102100025825 Methylated-DNA-protein-cysteine methyltransferase Human genes 0.000 description 1
- 238000011529 RT qPCR Methods 0.000 description 1
- 102100033909 Retinoic acid receptor beta Human genes 0.000 description 1
- 101150045565 Socs1 gene Proteins 0.000 description 1
- 108700027336 Suppressor of Cytokine Signaling 1 Proteins 0.000 description 1
- 102100024779 Suppressor of cytokine signaling 1 Human genes 0.000 description 1
- 206010073328 Undifferentiated nasopharyngeal carcinoma Diseases 0.000 description 1
- 238000001793 Wilcoxon signed-rank test Methods 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 108010030074 endodeoxyribonuclease MluI Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000003677 hemocyte Anatomy 0.000 description 1
- 229940000351 hemocyte Drugs 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- YDTFRJLNMPSCFM-YDALLXLXSA-M levothyroxine sodium anhydrous Chemical compound [Na+].IC1=CC(C[C@H](N)C([O-])=O)=CC(I)=C1OC1=CC(I)=C(O)C(I)=C1 YDTFRJLNMPSCFM-YDALLXLXSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- 108040008770 methylated-DNA-[protein]-cysteine S-methyltransferase activity proteins Proteins 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000001613 neoplastic effect Effects 0.000 description 1
- 101800000607 p15 Proteins 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 108091008761 retinoic acid receptors β Proteins 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
- C12Q1/6886—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material for cancer
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/118—Prognosis of disease development
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/154—Methylation markers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Hospice & Palliative Care (AREA)
- Biophysics (AREA)
- Oncology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
本发明涉及检测或监测包含至少两个甲基化敏感限制酶识别位点的靶DNA序列的甲基化程度的方法,该方法包括以识别所述甲基化敏感限制酶识别位点的一种或多种甲基化敏感限制酶消化含有所述靶DNA序列的样品;以及定量消化后样品中残留的靶DNA序列,其中得到的靶DNA序列的水平表明甲基化程度。相应地,本发明还提供了检测、预后或监测个体中癌症的试剂盒。
Description
技术领域
本发明涉及检测DNA序列甲基化程度的方法,以及利用DNA序列的甲基化程度来检测、预后或监测个体中癌症的试剂盒。
发明背景
已熟知肿瘤抑制基因在肿瘤细胞中被甲基化。因而,甲基化标志物已被建议用于检测或监测患者癌症。已有多种方法被提议用于检测这些甲基化的序列。
甲基化特异PCR(MSP)是检测甲基化或未甲基化的DNA最常用的方法。MSP涉及亚硫酸氢盐转化的步骤。用亚硫酸氢钠使胞嘧啶脱氨基成为尿嘧啶,而5-甲基胞嘧啶保持完好。甲基化特异PCR使用靶向亚硫酸氢盐诱导的序列改变的PCR引物,以特异性扩增甲基化的或未甲基化的等位基因。亚硫酸氢盐转化破坏约95%的DNA。由于血清或血浆中DNA的浓度通常很低,DNA减少95%导致检出率小于50%。
其它方法使用特异消化甲基化或未甲基化DNA的限制性内切酶。特异消化甲基化DNA的酶很少。但是,特异消化未甲基化DNA的酶很容易得到。检测方法然后确立消化是否发生,并且因此允许检测所关注DNA是否甲基化或未甲基化(这取决于所用酶的特异性),其与癌症相关或不相关。
以前已提出过甲基化敏感的酶消化。例如,Silva et al,BritishJournal of Cancer,80:1262-1264,1999进行了甲基化敏感的酶消化及之后的PCR。但是,如作者Yegnasubramanian et al,Nucleic AcidsResearch,Vol.34,No.3,2006e 19所指出的,这些方法被产生的假阳性数所困扰。
本发明寻求提供甲基化敏感的检测的更好方法,其排除或减少假阳性和/或假阴性。
发明内容
根据本发明的第一方面,提供了检测或监测包含至少两个甲基化敏感限制酶识别位点的靶DNA序列的甲基化程度的方法,所述方法包括:
(a)以识别所述甲基化敏感限制酶识别位点的一种或多种甲基化敏感限制酶消化含有所述靶DNA序列的样品;以及
(b)定量消化后所述样品中残留的所述靶DNA序列,
其中步骤(b)中得到的所述靶DNA序列的水平表明所述甲基化程度。
本发明的方法利用甲基化敏感限制酶在多个位点切割靶DNA序列,大大提高了检测的准确性。
相应地,本发明还提供了使用选自来自个体的血液、血浆、血清、唾液、尿的生物样品检测或监测癌症的方法,所述方法包括:
(a)从所述生物样品获得DNA;
(b)使用一种或多种甲基化敏感限制酶消化该DNA样品;
(c)在步骤(b)之后量化或检测靶DNA序列,其中靶DNA序列含有至少两个甲基化敏感限制酶的识别位点;以及
(d)将来自该个体的该DNA序列的水平与正常标准比较,以检测、预测或监测癌症。
在本发明的优选实施方案中,将聚合酶链式反应(PCR)或实时定量聚合酶链式反应(Q-PCR)用于定量靶DNA序列。优选地,该甲基化敏感限制酶识别未甲基化的DNA序列。该靶序列为癌症患者的易被甲基化的序列,因此正常患者的未甲基化的靶序列被消化,不被聚合酶链式反应扩增,而在癌症患者中,靶序列被甲基化并且不被酶消化,随后可被例如使用聚合酶链式反应量化或检测。
本发明的方法可用于预测个体的癌症易感性、评估个体中癌症的阶段、预测个体整体存活的可能性、预测个体的复发的可能性或评估个体中治疗的有效性。
根据本发明的第二方面,提供了检测、预后或监测个体中癌症的试剂盒,包括
(i)至少一种甲基化敏感限制酶;以及
(ii)定量来自所述个体的样品中靶DNA序列的单元,
其中所述靶DNA序列在癌症中表现出异常甲基化模式,并且含有所述甲基化敏感限制酶能识别的至少两个甲基化敏感限制酶识别位点。
在所述癌症为肝细胞癌的本发明优选实施方案中,所述试剂盒优选还包括在样品中定量甲胎蛋白的单元。在所述癌症为鼻咽癌的本发明优选实施方案中,所述试剂盒优选还包括在样品中定量EBV DNA的单元。
附图简要说明
图1显示患者血浆中甲基化的RASSF1A的浓度。
图2显示手术切除肝细胞癌(HCC)后血浆甲基化RASSF1A水平的改变。
图3显示HCC患者中AFP和甲基化的RASSF1A序列的循环浓度之间没有相关性。
图4显示HBV携带者中AFP和甲基化的RASSF1A序列的循环浓度之间没有相关性。
图5显示血浆甲基化RASSF1A的定量分析可以补充用于HCC检测的AFP分析。
图6显示手术切除前血浆中甲基化RASSF1A的浓度预测手术切除后患者的存活。
图7显示手术切除后血浆中甲基化RASSF1A的浓度的减小。
图8显示鼻咽癌(NPC)患者血浆中检测到的甲基化RASSF1A的浓度与Epstein-Barr病毒(EBV)的DNA浓度相关。
图9显示RASSF1A基因的启动子和第一个外显子的基因组序列。甲基化敏感限制酶BstUI的识别序列用下划线标出,并且PCR检测的靶序列用粗体突出。靶序列中有5个BstUI酶限制位点。
具体实施方式
本发明提供评估、诊断、预测或监测个体中肿瘤的存在或进展的方法。该方法涉及使用甲基化敏感限制酶消化DNA序列。选择含有至少两个限制位点的靶DNA序列,这两个限制位点可以是甲基化的或未甲基化的。优选使用特定的甲基化敏感限制酶实施本方法,与甲基化序列相比,该特定的甲基化敏感限制酶优先切割未甲基化的序列。甲基化序列保持未被消化并被检测到。在未甲基化序列的至少一个甲基化敏感限制酶位点的消化导致该靶序列不能被检测到或不可扩增。因此甲基化序列可与未甲基化序列区分开。本发明的一个实施方案中,在诸如癌症患者的血浆或血清的生物样品中检测到的未被切割的靶序列的数量高于来自于健康的或没有癌症的个体的同类型生物样品中证实的数量,这是因为与健康个体相比,癌症患者中该靶序列高度甲基化。
或者,可以使用切割甲基化DNA的限制酶。未甲基化的DNA序列未被消化并且可被检测到。本发明的另一实施方案中,与来自于没有癌症的个体的同类型生物样品中证实的数量相比,在诸如癌症患者的血浆或血清的生物样品中检测到较低数量的未被切割的靶序列。
本发明的优选实施方案中,通过PCR扩增检测靶序列。可以使用实时定量PCR。选择特定的引物序列,使得使用该引物扩增的序列中存在至少两个甲基化敏感限制酶位点。本发明的方法不使用亚硫酸氢钠。
使用合适方法(如PCR)的扩增被用于检测未被切割的靶序列,由此确定未被限制酶切割的甲基化DNA的存在。
根据本发明,可以使用任何适合的甲基化敏感限制酶。下表I列出了切割未甲基化的DNA的甲基化敏感限制酶的例子。
表I:甲基化敏感限制酶的例子
酶 | 识别序列 | CpG甲基化对酶限制性的影响* |
AatII | GACGTC | 阻止 |
AjiI | CACGTC | 阻止 |
BstUI,Bsh 1236I | CGCG | 阻止 |
Bsh1285I | CGRYCG | 阻止 |
BshTI | ACCGGT | 阻止 |
Bsp68I | TCGCGA | 阻止 |
Bsp119I | TTCGAA | 阻止 |
Bsp143II | RGCGCY | 阻止 |
Bsu15I | ATCGAT | 阻止 |
CseI | GACGC | 阻止 |
Cfr10I | RCCGGY | 阻止 |
Cfr42I | CCGCGG | 阻止 |
CpoI | CGGWCCG | 阻止 |
Eco47III | AGCGCT | 阻止 |
Eco52I | CGGCCG | 阻止 |
Eco72I | CACGTG | 阻止 |
Eco105I | TACGTA | 阻止 |
EheI | GGCGCC | 阻止 |
Esp3I | CGTCTC | 阻止 |
FspAI | RTGCGCAY | 阻止 |
HhaI;Hin6I | GCGC | 阻止 |
Hin1I | GRCGYC | 阻止 |
HpaII | CCGG | 阻止 |
Kpn2I | TCCGGA | 阻止 |
MluI | ACGCGT | 阻止 |
NotI | GCGGCCGC | 阻止 |
NsbI | TGCGCA | 阻止 |
PauI | GCGCGC | 阻止 |
PdiI | GCCGGC | 阻止 |
Pfl23II | CGTACG | 阻止 |
Ppu21I | YACGTR | 阻止 |
Psp1406I | AACGTT | 阻止 |
PvuI | CGATCG | 阻止 |
SalI | GTCGAC | 阻止 |
SgsI | GGCGCGCC | 阻止 |
SmaI | CCCGGG | 阻止 |
SmuI | CCCGC | 阻止 |
SsiI | CCGC | 阻止 |
TaiI | ACGT | 阻止 |
TauI | GCSGC | 阻止 |
识别序列中的字母代码代表不同的核苷酸组合,总结如下:R=G或A;Y=C或T;W=A或T;M=A或C;K=G或T;S=C或G;H=A、C或T;V=A、C或G;B=C、G或T;D=A、G或T;N=G、A、T或C。
识别序列中的CpG二核苷酸用下划线标出。这些CpG二核苷酸的胞嘧啶残基易被甲基化。*识别序列中的CpG二核苷酸的胞嘧啶的甲基化防止该靶序列的酶切割。
所述靶序列包含两个或多个甲基化敏感限制酶位点。这些位点可以被相同或不同的酶识别。但是,如此选择这些位点,以使得当使用与甲基化序列相比优先切割未甲基化的序列的酶时,每个序列中至少两个位点当其未甲基化时被消化。
在不太优选的实施方案中,该靶序列含有至少两个被优先切割甲基化序列的限制酶切割的位点。该两个或多个位点可以被相同或不同的酶切割。
根据本发明,可以使用任何适合的DNA甲基化标志物。这些DNA甲基化标志物是所选定序列与正常个体相比在癌症患者中显示不同甲基化模式的标志物。选择适当的标志物使得待扩增序列含有至少两个甲基化敏感限制酶位点。通常这些甲基化标志物是这样的基因,即其启动子和/或编码序列在癌症患者中被甲基化。优选地,该选定序列在非癌的(non-cancer)或没有癌症的(cancer-free)个体中未甲基化或以较低程度甲基化。
适合的标志物包括例如RASSF1A。实际上,已证明RASSF1A用于检测或监测个体癌症时特别有效。因此,根据本发明的另一方面,提供了使用选自来自个体的血液、血浆、血清、唾液、尿的生物样品检测或监测癌症的方法,所述方法包括:
(a)从所述生物样品获得DNA;
(b)使用一种或多种甲基化敏感限制酶消化该DNA样品;
(c)在步骤(b)之后,量化或检测靶DNA序列,其中该靶DNA序列是包含部分或全部RASSF1A的序列;以及
(d)将来自该个体的该DNA序列的水平与正常标准比较,以检测、预测或监测癌症。
下表II列出了与RASSF1A启动子超甲基化相关的肿瘤类型。
表II:不同癌症类型中RASSF1A启动子超甲基化的频率
(按频率降序排列)
癌症类型 | RASSF1A启动子超甲基化的频率 |
肝 | 93%-100% |
乳腺 | 49%-95% |
肺(小细胞) | 79%-88% |
前列腺 | 71%-83% |
黑素瘤, | 41%-75% |
胰腺 | 64% |
肾 | 36%-64% |
膀胱 | 47%-60% |
结肠 | 12%-45% |
卵巢 | 30%-40% |
肺(非小细胞) | 28%-40% |
表III列出了其它优选的在肿瘤中表现超甲基化的肿瘤抑制基因。
表III:癌症中其启动子区域经常被甲基化失活的肿瘤抑制基因的例子
肿瘤抑制基因 | 其中基因可能被异常甲基化的癌症类型 |
APC | 结肠直肠、乳腺、头和颈、食道、膀胱、前列腺、胃、肺、肾 |
DAP-kinase | 胰腺、胃、肺、结肠直肠、乳腺、子宫颈、鼻咽 |
E-cadherin | 乳腺、肺、胃、结肠直肠、前列腺、膀胱、子宫颈、肾 |
GSTPI | 肺、胃、膀胱、前列腺、乳腺、子宫颈 |
hMLH1 | 胃、结肠直肠、子宫颈、肝、食道、肺、卵巢、前列腺 |
MGMT | 肺、结肠直肠、膀胱、子宫颈、乳腺、食道、前列腺、鼻咽、肾 |
NORE1A | 肾、肺、乳腺、结肠 |
p14 | 结肠直肠、膀胱、鼻咽、肾、胃、乳腺 |
p15 | 膀胱、鼻咽、肾、多发性骨髓瘤、结肠直肠、肺、卵巢、胃 |
P16INK4a | 肺、胃、膀胱、子宫颈、鼻咽、乳腺、前列腺、肾、肝、结肠直肠、胰腺、白血病、多发性骨髓瘤、甲状腺 |
RARbeta | 肺、乳腺、鼻咽、前列腺、肾、胃 |
SOCS1 | 结肠直肠、白血病、胃、卵巢、肝、胰腺 |
Rb | 眼癌、肺、食道、胃 |
VHL | 肾 |
依照本发明的方法,从患者取得或获得样品。适合的样品包括血液、血浆、血清、唾液和尿。依照本发明使用的样品包括全血、血浆或血清。从全血中制备血清或血浆的方法为本领域技术人员所熟知。例如,血液可被置于含有EDTA或诸如Vacutainer SST(BectonDickenson,Franklin Lake,NJ,USA)的专门市售产品的试管中以防止血液凝结,随后可以通过离心从全血中获得血浆。血液凝结后可通过离心或不通过离心获得血清。如果使用离心,通常但不专有地以适当的速度进行,如1500-3000xg。再被转移到新试管进行DNA提取之前,可对血浆或血清进行更多的离心步骤。
优选地,使用合适的DNA提取技术从样品中提取DNA。对于本领域技术人员来说,DNA提取是常规内容。已知从生物样品(包括血液)中提取DNA的许多方法。可遵循DNA制备的一般方法,例如Sambrook and Russell,Molecular Cloning a Laboratory Manual(分子克隆:实验室手册),3rd Edition(2001)所描述的。还可以使用各种可购得的试剂或试剂盒从血液样品中获得DNA。
依照本发明,使含有DNA的样品与一种或多种在特定条件下优先切割未甲基化的DNA的限制酶共同孵育,该特定条件为当靶序列中存在两个或更多处于未甲基化状态的限制酶位点时,所述限制酶可以在至少一个这样的位点处切割靶序列。依照本发明的另一方面,含有DNA的样品与一种或多种在特定条件下只切割甲基化DNA的限制酶共同孵育,该特定条件为当靶序列中存在两个或更多处于甲基化状态的限制酶位点时,该限制酶可以在至少一个这样的位点处切割靶序列。
优选地,样品在允许完全消化的条件下孵育。这可以通过例如增加孵育时间和/或增加酶的用量来达到。通常,样品与100活性单位的甲基化敏感限制酶一起孵育多至16小时。对于本领域技术人员来说,根据所用酶的量建立合适的条件是常规内容。
孵育后,检测未切的靶序列。优选地,通过例如聚合酶链式反应(PCR)扩增来检测这些序列。
设计DNA引物以扩增含有至少两个甲基化敏感限制酶位点的序列。可以通过考察DNA甲基化标志物并且确定这些标志物中被甲基化敏感限制酶识别的限制酶位点来确定这样的序列。例如使用表I中确定的甲基化敏感限制酶的识别序列,可以在表III所列的甲基化标志物中确定合适靶序列。
使用RASSF1A作为例子,靶序列可以包含RASSF1A基因的部分或全部启动子序列和/或外显子1。图9显示该启动子和外显子1的序列(SEQ ID NO.1)。优选实施方案中,该用于检测的靶序列在图9中用粗体突出。
当使用甲基化敏感限制酶时,根据具体个体中该靶序列的甲基化状态,会检测到不同量的该靶序列。在本发明的优选实施方案中,使用优先切割未甲基化DNA的甲基化敏感限制酶,则该靶序列不会在未甲基化状态时(如在健康个体中)被检测到。但是,如果该靶序列被甲基化(如在来自癌症患者的选定样品中),该靶序列不被限制酶切割,因此该靶序列可以通过PCR检测到。
因此,该方法可用于确定靶序列的甲基化状态,并且提供该个体的癌症状态的指示。
本发明的方法可能另外包括量化或检测对照序列。选择在癌症中不显示异常甲基化模式的序列作为对照序列。依照本发明的优选方面,选择含有至少两个甲基化敏感限制酶识别位点的对照序列。优选地,选择含有与靶DNA序列相同数目的甲基化敏感限制酶识别位点的对照序列。通常,通过扩增检测该对照序列的存在或缺失,该扩增通过甲基化敏感限制酶消化后的聚合酶链式反应完成。这类对照序列可用于评估一种或多种甲基化敏感限制酶的消化程度。例如,如果甲基化敏感限制酶消化后可检测到对照序列,其表明消化不完全并且可以重复该方法以确保发生完全消化。优选地,选择含有与靶序列中相同的甲基化敏感限制酶识别位点的对照序列。优选实施方案中,该对照序列是β肌动蛋白基因序列。
本方法可用于评估个体的肿瘤状态。该方法可用于例如癌症的诊断和/或预后。该方法还可用于例如治疗过程中癌症进程的监测。该方法还可用于监测随时间发生的甲基化水平的变化,例如评估个体对肿瘤的易感性和疾病的进程。该方法还可用于预测疾病的后果或预测治疗成功的可能性。
在本发明的优选方面,该靶序列是RASSF1A并且被用于癌症的诊断。例如,RASSF1A甲基化可用于检测和监测肝细胞癌或鼻咽癌。该方法在监测乙型肝炎携带者或丙型肝炎携带者向肝细胞癌转化的易感性中特别有用。
在本发明的另一方面,还提供了检测、预后或监测个体中癌症的试剂盒。该试剂盒包括至少一种甲基化敏感限制酶;以及用于定量来自该个体的样品中靶DNA序列的单元,其中该靶DNA序列在癌症中表现出异常甲基化模式,并且含有所述甲基化敏感限制酶能识别的至少两个甲基化敏感限制酶识别位点。
在优选的实施方案中,靶DNA序列至少是RASSF1A的一部分,所采用的甲基化敏感限制性酶为BstUI。本发明的试剂盒还优选包含用于检测样品中对照DNA序列(如β肌动蛋白基因序列)的单元。所述的定量靶DNA序列或对照DNA序列的单元一般包括用于PCR或Q-PCR的试剂,例如引物、DNA聚合酶、核苷酸、缓冲液等,用于Q-PCR的试剂还包括探针,优选荧光团标记的探针。
在本发明的优选实施方案中用于定量RASSF1A序列的PCR或Q-PCR所用引物为SEQ ID NO.2和SEQ ID NO.3,Q-PCR所用的探针包含SEQ ID NO.4的序列;用于定量β肌动蛋白基因序列的PCR或Q-PCR所用引物为SEQ ID NO.5和SEQ ID NO.6,Q-PCR所用的探针包含SEQ ID NO.7的序列。
对于用于肝细胞癌(HCC)的试剂盒,本发明优选还包括检测甲胎蛋白的单元。甲胎蛋白是已知的肝细胞癌(HCC)的标志物,其检测方法和所用试剂为本领域技术人员所熟知。对于用于鼻咽癌(APC)的试剂盒,本发明优选还包括检测EBV DNA的单元。EBV DNA是已知的鼻咽癌标志物,其检测方法和所用试剂也为本领域技术人员所熟知。将靶DNA序列的甲基化程度检测和特定的标志物的检测进行结合,可大大提高检测的准确性。
以下将利用下列实施例更详细地描述本发明。
实施例
征募了63个肝细胞癌(HCC)患者以及两组对照。第一对照组由15个没有慢性乙型肝炎感染的健康对照个体组成。第二对照组由慢性乙型肝炎携带者组成。对于每一个HCC患者,征募一个性别和年龄匹配的慢性乙型肝炎携带者作为对照。慢性乙型肝炎携带者具有发展HCC的更高危险,并且因此成为HCC筛选的靶群体。从每一个研究个体收集4毫升静脉血到含有EDTA的试管中。1,600g离心血液样品10分钟,并且再次以16,000g离心上清液10分钟。使用QIAamp mini kit(Qiagen,Hilden,Germany)从800μL血浆中提取DNA并且用50μLH2O洗脱。用100U的BstUI酶消化35微升血浆DNA,消化在1X消化缓冲液中在60℃下进行16小时。
通过实时PCR确定血浆RASSF1A序列的浓度,该实时PCR使用引物5’AGCCTGAGCTCATTGAGCTG3’(SEQ ID NO.2)和5’ACCAGCTGCCGTGTGG 3’(SEQ ID NO.3),和探针5’(FAM)-CCAACGCGCTGCGCAT-(MGB)3’(SEQ ID NO.4)。每一反应含有1X TaqMan Universal PCR Master Mix(Applied Biosystems,FosterCity,USA)、引物各300nM和85nM探针。7.15微升酶消化的血浆DNA混合物(相当于5μL未消化的血浆DNA)用作每一个PCR反应的模板。温度模式设定为50℃2分钟、95℃10分钟、50个循环的95℃15秒和60℃1分钟。所有的反应以两个重复进行并取平均值。RASSF1A扩增子包含5个BstUI识别位点。
为确保限制酶消化的完全性,对每一个消化的样品进行靶向β-肌动蛋白基因的实时PCR,该实时PCR使用引物5’GCGCCGTTCCGAAAGTT3’(SEQ ID NO.5)和5’CGGCGGATCGGCAAA3’(SEQ ID NO.6)以及探针5’(FAM)-ACCGCCGAGACCGCGTC-(MGB)3’(SEQ ID NO.7)。通过亚硫酸氢盐测序,显示β-肌动蛋白基因启动子在血细胞和HCC组织中完全未甲基化。β肌动蛋白基因序列扩增子与RASSF1A扩增子有相似大小,并且含有相同数目的BstUI酶限制位点。
为研究未甲基化的RASSF1A和β肌动蛋白基因序列的酶消化效率是否相似,用100U的BstUI酶消化1μg等份的血沉棕黄层(buffy)coat),消化进行不同的时长(15分钟、30分钟、45分钟、60分钟、90分钟、120分钟、3小时、4小时、5小时、6小时、12小时和16小时)。酶消化后测量每一个样品中RASSF1A和β肌动蛋白基因序列的浓度。如图1所示,这些血沉棕黄层DNA中RASSF1A和β肌动蛋白基因序列的浓度显示正相关(r=0.986,P<0.0001,Pearson相关)。由于未甲基化的RASSF1A和β肌动蛋白基因序列的酶消化效率相似,所以β肌动蛋白基因序列在经消化的血清DNA样品中的缺失应反映未甲基化的RASSF1A序列的完全消化。因此,所有β肌动蛋白基因序列信号为阳性的样品都经进一步的酶消化直到在经消化的血清DNA样品中检测不到β肌动蛋白基因序列。
BstUI酶消化后,在63个HCC患者中的59个(93%)和63个匹配的慢性乙型肝炎携带者中的37个(58%)的血浆中检测到RASSF1A序列。图2显示了这些结果。HCC患者和慢性肝炎B携带者的中位数血浆RASSF1A浓度分别为770拷贝/mL和118拷贝/mL。相反,在15个健康对象中任何一个的血浆中都检测不到RASSF1A。
不被消化的RASSF1A的血浆浓度没有显示与甲胎蛋白(AFP)水平的任何显著线性相关,其中甲胎蛋白为已建立的HCC的肿瘤标志物。图3和图4显示了这些结果。在这点上,我们已经证明血浆甲基化RASSF1A的定量分析可以补充用于HCC检测的AFP分析。图5显示了这些结果。在我们的实验组中,62个患者中的16个有小于10μg/L的低水平AFP。以300拷贝/mL为界,血浆RASSF1A分析鉴定了这16个有假阴性AFP结果的HCC患者中的13个(81%)。
图6证明了外科手术前血浆RASSF1A浓度小于550拷贝/mL的HCC患者的存活可能性好于那些水平高于550拷贝/mL的患者(p=0.0359,Kaplan-Meier存活分析)。
从手术切除肿瘤后1个月的HCC患者收集血液样品。肿瘤切除前就有可检测到的血浆RASSF1A的59个患者中,45人(76%)显示手术后浓度减小。图7显示了这些结果。这45个患者中,13个在切除肿瘤后检测不到RASSF1A。中位数RASSF1A浓度从770拷贝/mL下降到250拷贝/mL(p<0.0001,Wilcoxon测验)。
为进一步研究甲基化敏感限制酶消化后血浆RASSF1A的定量分析是否是具有RASSF1A异常甲基化的癌症的通用标志物,征募了67个鼻咽癌(NPC)患者研究抗酶消化的RASSF1A的血浆浓度与Epstein-Barr病毒(EBV)DNA的相关性。血浆EBV DNA是NPC的已建立标志物并且已被证实反映肿瘤量(Lo YMD,Chan LY,Lo KW,Leung SF,Zhang J,Chan AT,Lee JC,Hjelm NM,Johnson PJ,Huang DP.,Quantitative analysis of cell-free Epstein-Barr virus DNA in plasma ofpatients with nasopharyngeal carcinoma(鼻咽癌患者血浆中无细胞的Epstein-Barr病毒的定量分析).Cancer Res 1999;59:1188-91)。图8显示了这些结果。EBV DNA和抗酶消化的RASSF1A序列可分别在65(94%)和39(58%)个患者的血浆中检测到。可检测到抗酶消化的RASSF1A和EBV DNA的患者中,这两个DNA序列的血浆浓度显示正相关(r=0.38,p=0.019,Spearman相关)。
甲基化敏感限制酶消化后,分析来自这67个NPC患者的29个肿瘤样品的RASSF1A。酶消化后,RASSF1A序列可在这29个病例中的25个中检测到(86%)。对于这25个RASSF1A基因在肿瘤中超甲基化的病例,酶消化后,RASSF1A序列可在20个病例(80%)的血浆中检测到。该检测率显著好于之前的研究所报告的情况,该研究使用甲基化特异PCR检测血浆中超甲基化的RASSF1A序列(Wong TS,Kwong DL,Sham JS,Wei WI,Kwong YL,Yuen AP,Quantitative plasmahypermethylated DNA markers of undifferentiated nasopharyngealcarcinoma(无差异的鼻咽癌的定量血浆超甲基化DNA标志物),ClinCancer Res.2004;10:2401-6)。在该报告中,甲基化的RASSF1A只在5%的NPC患者的血浆中检测到。
参考文献:
Anacleto C,Rossi B,Lopes A,Soares FA,Rocha JC,Caballero O,etal.Development and application of a multiplex PCR procedure for thedetection of DNA methylation in colorectal cancer(发展和应用多元PCR方法以检测结肠直肠癌中的DNA甲基化).Oncol Rep 2005;13:325-8.
Banks RE,Tirukonda P,Taylor C,Hornigold N,Astuti D,Cohen D,et al.Genetic and epigenetic analysis of von Hippel-Lindau(VHL)genealterations and relationship with clinical variables in sporadic renal cancer(von Hippel-Lindau(VHL)基因改变的遗传和外遗传分析以及与偶发性肾癌中临床变量的关系).Cancer Res 2006;66:2000-11.
Baumann S,Keller G,Puhringer F,Napieralski R,Feith M,Langer R,et al.The prognostic impact of O6-Methylguanine-DNAMethyltransferase(MGMT)promotor hypermethylation in esophagealadenocarcinoma(食道腺癌中O6-甲基鸟嘌呤-DNA甲基转移酶(MGMT)启动子超甲基化的预后影响).Int J Cancer 2006;119:264-8.
Boltze C,Zack S,Quednow C,Bettge S,Roessner A,Schneider-Stock R.Hypermethylation of the CDKN2/p16INK4Apromotor in thyroid carcinogenesis(甲状腺癌发生中CDKN2/p16INK4A启动子的超甲基化).Pathol Res Pract 2003;199:399-404.
Bomman DM,Mathew S,Alsruhe J,Herman JG,Gabrielson E.Methylation of the E-cadherin gene in bladder neoplasia and in normalurothelial epithelium from elderly individuals(来自较高龄个体的膀胱瘤和正常膀胱上皮细胞中E-钙粘着蛋白基因的甲基化).Am J Pathol2001;159:831-5.
Burbee DG,Forgacs E,Zochbauer-Muller S,Shivakumar L,Fong K,Gao B,et al.Epigenetic inactivation of RASSF 1A in lung and breastcancers and malignant phenotype suppression(肺癌和乳腺癌中RASSF1A的外遗传失活和恶性表型抑制).J Natl Cancer Inst2001;93:691-9.
Chan MW,Chan LW,Tang NL,Lo KW,Tong JH,Chan AW,et al.Frequent hypermethylation of promoter region of RASSF1A in tumortissues and voided urine of urinary bladder cancer patients(膀胱癌患者的肿瘤组织和净排小便中RASSF1A的启动子区域的经常性超甲基化).Int J Cancer 2003;104:611-6.
Chen CL,Liu SS,Ip SM,Wong LC,Ng TY,Ngan HY.E-cadherinexpression is silenced by DNA methylation in cervical cancer cell linesand tumours(宫颈癌细胞系和肿瘤中E-钙粘蛋白的表达被DNA甲基化沉默).EurJ Cancer 2003;39:517-23.
Chen CY,Tsay W,Tang JL,Shen HL,Lin SW,Huang SY,et al.SOCS1 methylation in patients with newly diagnosed acute myeloidleukemia(新诊断出急性骨髓白血病患者中SOCS1的甲基化).GenesChromosomes Cancer 2003;37:300-5.
Chen W,Wu Y,Zhu J,Liu J,Tan S,Xia C.Methylation of p16 andp15genes in multiple myeloma(多发性骨髓瘤中p16和p15基因的甲基化).Chin Med Sci J 2002;17:101-5.
Choi N,Son DS,Song I,Lee HS,Lim YS,Song MS,et al.RASSF1Ais not appropriate as an early detection marker or a prognostic marker fornon-small cell lung cancer(RASSF1A不适合作为非小细胞肺癌的早期检测标志物或预后标志物).Int J Cancer 2005;115:575-81.
Dammann R,Schagdarsurengin U,Liu L,Otto N,Gimm O,Dralle H,et al.Frequent RASSF1A promoter hypermethylation and K-ras mutationsin pancreatic carcinoma(胰腺癌中经常性RASSF1A启动子超甲基化和K-ras突变).Oncogene 2003;22:3806-12.
Dammann R,Takahashi T,Pfeifer GP.The CpG island of the noveltumor suppressor gene RASSF1A is intensely methylated in primary smallcelllung carcinomas(新肿瘤抑制基因RASSF1A的CpG岛在原发性小细胞肺癌中强烈甲基化).Oncogene 2001;20:3563-7.
Dansranjavin T,Mobius C,Tannapfel A,Bartels M,Wittekind C,Hauss J,Witzigmann H.E-cadherin and DAP kinase in pancreaticadenocarcinoma and corresponding lymph node metastases(胰腺癌及相应淋巴结转移中的E-钙粘蛋白和DAP激酶).Oncol Rep2006;15:1125-31.
Dhillon VS,Aslam M,Husain SA.The contribution of genetic andepigenetic changes in granulosa cell tumors of ovarian origin(卵巢起源的粒层细胞肿瘤中遗传和外遗传改变的贡献).Clin Cancer Res2004;10:5537-45.
Dominguez G,Silva J,Garcia JM,Silva JM,Rodriguez R,Munoz C,et al.Prevalence of aberrant methylation of p14ARF over p16INK4a insome human primary tumors(某些人原发性肿瘤中p14ARF的异常甲基化普遍超过p16INK4a).Mutat Res 2003;530:9-17.
Dulaimi E,Hillinck J,Ibanez de Caceres I,Al-Saleem T,Caims P.Tumor suppressor gene promoter hypermethylation in serum of breastcancer patients(乳腺癌患者血清中肿瘤抑制基因启动子的超甲基化).Clin Cancer Res 2004;10:6189-93.
Dulaimi E,Ibanez de Caceres I,Uzzo RG,Al-Saleem T,GreenbergRE,Polascik TJ,et al.Promoter hypermethylation profile of kidneycancer(肾癌的启动子超甲基化谱).Clin Cancer Res 2004;10:3972-9.
Ekmekci CG,Gutierrez MI,Siraj AK,Ozbek U,Bhatia K.Aberrantmethylation of multiple tumor suppressor genes in acute myeloidleukemia(急性骨髓白血病中多个肿瘤抑制基因的异常甲基化).Am JHematol 2004;77:233-40.
Esteller M.Epigenetic lesions causing genetic lesions in humancancer:promoter hypermethylation of DNA repair genes(人类癌症中外遗传损伤造成遗传病变:DNA修复基因的启动子超甲基化).Eur JCancer 2000;36:2294-300.
Fackler MJ,McVeigh M,Evron E,Garrett E,Mehrotra J,Polyak K,et al.DNA methylation of RASSF1A,HIN-1,RAR-beta,Cyclin D2 andTwist in in situ and invasive lobular breast carcinoma(原位和侵入性小叶乳腺癌中RASSF1A、HIN-1、RAR-β、Cyclin D2和Twist的DNA甲基化).Int J Cancer 2003;107:970-5.
Fox EJ,Leahy DT,Geraghty R,Mulcahy HE,Fennelly D,Hyland JM,et al.Mutually exclusive promoter hypermethylation patterns of hMLH1and O6-methylguanine DNA methyltransferase in colorectal cancer(结肠直肠癌中hMLH1和O6-甲基鸟嘌呤DNA甲基转移酶的互相排斥的启动子超甲基化模式).J Mol Diagn 2006;8:68-75.
Fujitake S,Hibi K,Okochi O,Kodera Y,Ito K,Akiyama S,Nakao A.Aberrant methylation of SOCS-1 was observed in younger colorectalcancer patients(年轻结肠直肠癌患者中观察到SOCS-1的异常甲基化).J Gastroenterol 2004;39:120-4.
Fujiwara K,Fujimoto N,Tabata M,Nishii K,Matsuo K,Hotta K,etal.Identification of epigenetic aberrant promoter methylation in serumDNA is useful for early detection of lung cancer(鉴定血清中外遗传的异常启动子甲基化可用于肺癌的早期检测).Clin Cancer Res2005;11:1219-25.
Gifford G,Paul J,Vasey PA,Kaye SB,Brown R.The acquisition ofhMLH1 methylation in plasma DNA after chemotherapy predicts poorsurvival for ovarian cancer patients(化疗后在血浆DNA中获得hMLH1甲基化预示卵巢癌患者的低存活).Clin Cancer Res 2004;10:4420-6.
Grote HJ,Schmiemann V,Geddert H,Bocking A,Kappes R,GabbertHE,et al.Methylation of RAS association domain family protein 1A as abiomarker of lung cancer(RAS相关结构域家族蛋白1A的甲基化作为肺癌的生物标志物).Cancer 2006;108:129-34.
Grover AC,Tangrea MA,Woodson KG,Wallis BS,Hanson JC,Chuaqui RF,et al.Tumor-associated endothelial cells display GS TP1 andRARbeta2 promoter methylation in human prostate cancer(在人前列腺癌中肿瘤相关的内皮细胞显示GSTP1和RARbeta2启动子甲基化).JTransl Med 2006;4:13.
Gutierrez MI,Siraj AK,Khaled H,Koon N,E1-Rifai W,Bhatia K.CpG island methylation in Schistosoma-and non-Schistosoma-associatedbladder cancer(血吸虫相关和非血吸虫相关的膀胱癌中CpG岛的甲基化).Mod Pathol 2004;17:1268-74.
Hesson L,Dallol A,Minna JD,Maher ER,Latif F.NORE 1A,ahomologue of RASSF1A tumour suppressor gene is inactivated in humancancers(NORE1A,RASSF1A肿瘤抑制基因的同源基因,在人癌症中失活).Oncogene 2003;22:947-54.
Hesson LB,Wilson R,Morton D,Adams C,Walker M,Maher ER,Latif F.CpG island promoter hypermethylation of a novel Ras-effectorgene RASSF2A is an early event in colon carcinogenesis and correlatesinversely with K-ras mutations(新Ras-效应基因RASSF2A的CpG岛启动子超甲基化是结肠癌发生中的早期事件并且与K-ras突变逆相关).Oncogene 2005;24:3987-94.
Hiltunen MO,Alhonen L,Koistinaho J,Myohanen S,Paakkonen M,Marin S,et al.Hypermethylation of the APC(adenomatous polyposis coli)gene promoter region in human colorectal carcinoma(人结肠直肠癌中APC(腺瘤性结肠息肉病)基因启动子区域的超甲基化).Int J Cancer1997;70:644-8。
Hiraguri S,Godfrey T,Nakamura H,Graff J,Collins C,Shayesteh L,et al.Mechanisms of inactivation of E-cadherin in breast cancer cell lines(乳腺癌细胞系中E-钙粘蛋白的失活机制).Cancer Res 1998;58:1972-7.
Hoque MO,Begum S,Topaloglu O,Chatterjee A,Rosenbaum E,VanCriekinge W,et al.Quantitation of promoter methylation of multiplegenes in urine DNA and bladder cancer detection(尿DNA中多个基因的启动子甲基化的量化和膀胱癌检测).J Natl Cancer Inst2006;98:996-1004.
Hoque MO,Feng Q,Toure P,Dem A,Critchlow CW,Hawes SE,et al.Detection of aberrant methylation of four genes in plasma DNA for thedetection of breast cancer(检测血清DNA中四个基因的异常甲基化以检测乳腺癌).J Clin Oncol 2006.
Hoque MO,Topaloglu O,Begum S,Henrique R,Rosenbaum E,VanCriekinge W,et al.Quantitative methylation-specific polymerase chainreaction gene patterns in urine sediment distinguish prostate cancerpatients from control subjects(尿沉淀物中定量甲基化特异聚合酶链式反应基因模式从对照对象中辨别出前列腺癌患者).J Clin Oncol2005;23:6569-75.
Hsu HS,Wen CK,Tang YA,Lin RK,Li WY,Hsu WH,Wang YC.Promoter hypermethylation is the predominant mechanism in hMLH1 andhMSH2 deregulation and is a poor prognostic factor in nonsmoking lungcancer(启动子超甲基化是hMLH1和hMSH2反常的主要机制,并且在非吸烟肺炎中是不良的预后因素).Clin Cancer Res 2005;11:5410-6.
Iida S,Akiyama Y,Nakajima T,Ichikawa W,Nihei Z,Sugihara K,Yuasa Y,Alterations and hypermethylation of the p14(ARF)gene ingastric cancer(胃癌中p14(ARF)基因的改变和超甲基化).Int J Cancer2000;87:654-8.
Ikoma H,Ichikawa D,Koike H,Ikoma D,Tani N,Okamoto K,et al.Correlation between serum DNA methylation and prognosis in gastriccancer patients(胃癌患者的血清DNA甲基化和预后的相关性).Anticancer Res 2006;26:2313-6.
Irimia M,Fraga MF,Sanchez-Cespedes M,Esteller M.CpG islandpromoter hypermethylation of the Ras-effector gene NORE1A occurs inthe context of a wild-type K-ras in lung cancer(Ras-效应基因NORE1A的CpG岛启动子超甲基化发生在肺癌中野生型K-ras的情况下).Oncogene 2004;23:8695-9.
Ito M,Ito G,Kondo M,Uchiyama M,Fukui T,Mori S,et al.Frequentinactivation of RASSF1A,BLU,and S EMA3B on 3p21.3by promoterhypermethylation and allele loss in non-small cell lung cancer(非小细胞肺癌中通过启动子超甲基化和等位基因损失的3p21.3上RASSF1A、BLU和SEMA3B的经常性失活).Cancer Lett 2005;225:131-9.
Jeronimo C,Henrique R,Hoque MO,Mambo E,Ribeiro FR,VarzimG,et al.A quantitative promoter methylation profile of prostate cancer(前列腺癌的定量启动子甲基化谱).Clin Cancer Res 2004;10:8472-8.
Jin Z,Tamura G,Tsuchiya T,Sakata K,Kashiwaba M,Osakabe M,Motoyama T.Adenomatous polyposis coli (APC)gene promoterhypermethylation in primary breast cancers(原发性乳腺癌中腺瘤性结肠息肉病(APC)基因启动子的超甲基化).Br J Cancer 2001;85:69-73.
Kang GH,Lee S,Lee HJ,Hwang KS.Aberrant CpG islandhypermethylation of multiple genes in prostate cancer and prostaticintraepithelial neoplasia(前列腺癌和前列腺上皮内瘤中多个基因的异常的CpG岛超甲基化).J Pathol 2004;202:233-40.
Kawakami K,Brabender J,Lord RV,Groshen S,Greenwald BD,Krasna MJ,et al.Hypermethylated APC DNA in plasma and prognosis ofpatients with esophageal adenocarcinoma(食道腺癌患者的血浆中超甲基化的APC DNA和预后).J Natl Cancer Inst 2000;92:1805-11.
Kawakami T,Okamoto K,Ogawa O,Okada Y.Multipointmethylation and expression analysis of tumor suppressor genes in humanrenal cancer cells(人肾癌细胞中肿瘤抑制基因的多点甲基化和表达分析).Urology 2003;61:226-30.
Komazaki T,Nagai H,Emi M,Terada Y,Yabe A,Jin E,et al.Hypermethylation-associated inactivation of the SOCS-1 gene,aJAK/STAT inhibitor,in human pancreatic cancers(人胰腺癌中SOCS-1基因(JAK/STAT抑制基因)的超甲基化相关失活).Jpn J Clin Oncol2004;34:191-4.
Kurakawa E,Shimamoto T,Utsumi K,Hirano T,Kato H,OhyashikiK.Hypermethylation of p16(INK4a)and p15(INK4b)genes in non-smallcell lung cancer(非小细胞肺癌中p16(INK4a)和p15(INK4b)基因的超甲基化).Int J Oncol 2001;19:277-81.
Kwong J,Lo KW,To KF,Teo PM,Johnson PJ,Huang DP.Promoterhypermethylation of multiple genes in nasopharyngeal carcinoma(鼻咽癌中多个基因的启动子超甲基化).Clin Cancer Res 2002;8:131-7.
Lee MG,Kim HY,Byun DS,Lee SJ,Lee CH,Kim JI,et al.Frequentepigenetic inactivation of RASSF1A in human bladder carcinoma(人膀胱癌中RASSF1A的经常性外遗传失活).Cancer Res 2001;61:6688-92.
Leung WK,To KF,Chu ES,Chan MW,Bai AH,Ng EK,et al.Potential diagnostic and prognostic values of detecting promoterhypermethylation in the serum of patients with gastric cancer(检测胃癌患者血清中启动子超甲基化的潜在诊断和预后价值).Br J Cancer2005;92:2190-4.
Li H,Lu S,Fong L.Study on the status of methylation of Rb genepromoter in human esophageal cancer and effect of NMBzA on Rb genepromoterin monkey esophageal epithelium(人食道癌中Rb基因启动子的甲基化状态的研究和猴食道上皮中NMBzA对Rb基因启动子的影响).Zhonghua Zhong Liu Za Zhi 1998;20:412-4.
Li LC,Zhao H,Nakajima K,Oh BR,Ribeiro Filho LA,Carroll P,Dahiya R.Methylation of the E-cadherin gene promoter correlates withprogression of prostate cancer(E-钙粘蛋白基因启动子的甲基化与前列腺癌的进展相关).J Urol 2001;166:705-9.
Lin SY,Yeh KT,Chen WT,Chen HC,Chen S T,Chiou HY,Chang JG.Promoter CpG methylation of tumor suppressor genes in colorectal cancerand its relatiohship to clinical features(结肠直肠癌中肿瘤抑制基因的启动子CpG甲基化及其与临床特征的关系).Oncol Rep 2004;11:341-8.
Liu L,Yoon JH,Dammann R,Pfeifer GP.Frequent hypermethylationof the RASSF1A gene in prostate cancer(前列腺癌中RASSF1A基因的经常性超甲基化).Oncogene 2002;21:6835-40.
Liu Z,Wang LE,Wang L,Lu KH,Mills GB,Bondy ML,Wei Q.Methylation and messenger RNA expression of p15INK4b but notp16INK4a are independent risk factors for ovarian cancer(p15INK4b而非p16INK4a的甲基化和信使RNA的表达是卵巢癌的独立危险因素).Clin Cancer Res 2005;11:4968-76.
Makarla PB,Saboorian MH,Ashfaq R,Toyooka KO,Toyooka S,Minna JD,et al.Promoter hypermethylation profile of ovarian epithelialneoplasms(卵巢上皮瘤的启动子超甲基化谱).Clin Cancer Res2005;11:5365-9.
Marini A,Mirmohammadsadegh A,Nambiar S,Gustrau A,Ruzicka T,Hengge UR.Epigenetic inactivation of tumor suppressor genes in serumof patients with cutaneous melanoma(皮肤黑素瘤患者血清中肿瘤抑制基因的外遗传失活).J Invest Dermatol 2006;126:422-31.
Maruyama R,Toyooka S,Toyooka KO,Harada K,Virmani AK,Zochbauer-Muller S,et al.Aberrant promoter methylation profile ofbladder cancer and its relationship to clinicopathological features(膀胱癌的异常启动子甲基化谱及其与临床病理特征的关系).Cancer Res2001;61:8659-63.
Mehrotra J,Vali M,Mc Veigh M,Kominsky SL,Fackler MJ,Lahti-DomeniciJ,et al.Very high frequency of hypermethylated genes inbreast cancer metastasis to the bone,brain,and lung(乳腺癌向骨骼、脑和肺转移中极高频率的超甲基化基因).Clin Cancer Res2004;10:3104-9.
Munot K,Bell SM,Lane S,Horgan K,Hanby AM,Speirs V.Patternof expression of genes linked to epigenetic silencing in human breastcancer(人乳腺癌中与外遗传沉默相关的基因的表达模式).Hum Pathol2006;37:989-99.
Oshimo Y,Kuraoka K,Nakayama H,Kitadai Y,Yoshida K,ChayamaK,Yasui W.Epigenetic inactivation of SOCS-1by CpG islandhypermethylation in human gastric carcinoma(人胃癌中CpG岛超甲基化导致的SOCS-1外遗传失活).Int J Cancer 2004;112:1003-9.
Safar AM,Spencer H,3rd,Su X,Coffey M,Cooney CA,Ratnasinghe LD,et al.Methylation profiling of archived non-small celllung cancer:a promising prognostic system(存档的非小细胞肺癌超甲基化谱:有前途的预后系统).Clin Cancer Res 2005;11:4400-5.
Sarrio D,Moreno-Bueno G,Hardisson D,Sanchez-Estevez C,Guo M,Herman JG,et al.Epigenetic and genetic alterations of APC and CDH1genes in lobular breast cancer:relationships with abnormal E-cadherinand catenin expression and microsatellite instability(小叶乳腺癌中APC和CDH1基因的外遗传和遗传改变:与异常E-钙粘蛋白和连接素表达和小卫星不稳定性的关系).Int J Cancer 2003;106:208-15.
Sato F,Harpaz N,Shibata D,Xu Y,Yin J,Mori Y,et al.Hypermethylation of the p14(ARF)gene in ulcerative colitis-associatedcolorectal carcinogenesis(溃疡性结肠炎相关的结肠直肠癌发生中p14(ARF)基因的超甲基化).Cancer Res 2002;62:1148-51.
Schagdarsurengin U,Wilkens L,Steinemann D,Flemming P,KreipeHH,Pfeifer GP,et al.Frequent epigenetic inactivation of the RASSF1Agene in hepatocellular carcinoma(肝细胞癌中RASSF1A基因的经常性后遗传失活).Oncogene 2003;22:1866-71.
Spugnardi M,Tommasi S,Dammann R,Pfeifer GP,Hoon DS.Epigenetic inactivation of RAS association domain family protein 1(RASSF1A)in malignant cutaneous melanoma(恶性皮肤黑素瘤中RAS相关结构域家族蛋白1A(RASSF1A)的外遗传失活).Cancer Res2003;63:1639-43.
Stirzaker C,Millar DS,Paul CL,Warnecke PM,Harrison J,VincentPC,et al.Extensive DNA methylation spanning the Rb promoter inretinoblastoma tumors(视网膜母细胞瘤中横跨Rb启动子的广泛的DNA甲基化).Cancer Res 1997;57:2229-37.
Sutherland KD,Lindeman GJ,Choong DY,Wittlin S,Brentzell L,Phillips W,et al.Differential hypermethylation of SOCS genes in ovarianand breast carcinomas(卵巢癌和乳腺癌中SOCS基因的差异超甲基化).Oncogene 2004;23:7726-33.
Tamura G.Alterations of tumor suppressor and tumor-related genesin the development and progression of gastric cancer(胃癌的发展和进行中肿瘤抑制基因和肿瘤相关基因的改变).World J Gastroenterol2006;12:192-8.
Tokinaga K,Okuda H,Nomura A,Ashida S,Furihata M,Shuin T.Hypermethylation of the RAS SF 1A tumor suppressor gene in Japaneseclear cell renal cell carcinoma(日本透明细胞肾细胞癌中RASSF1A肿瘤抑制基因的超甲基化).Oncol Rep 2004;12:805-10.
Tong JH,Tsang RK,Lo KW,Woo JK,Kwong J,Chan MW,et al.Quantitative Epstein-Barr virus DNA analysis and detection of genepromoter hypermethylation in nasopharyngeal (NP)brushing samplesfrom patients with NP carcinoma(定量Epstein-Barr病毒DNA分析和在来自鼻咽癌患者的鼻咽刷样中检测基因启动子的超甲基化).ClinCancer Res 2002;8:2612-9.
Toyooka S,Maruyama R,Toyooka KO,McLerran D,Feng Z,Fukuyama Y,et al.Smoke exposure,histologic type andgeography-related differences in the methylation profiles of non-small celllung cancer(非小细胞肺癌的甲基化谱中与被动吸烟下、组织类型和地域相关的差异).Int J Cancer 2003;103:153-60.
Tzao C,Hsu HS,Sun GH,Lai HL,Wang YC,Tung HJ,et al.Promoter methylation of the hMLH1 gene and protein expression ofhuman mutL homolog 1and human mutS homolog 2 in resectedesophageal squamous cell carcinoma(切除的食道鳞状细胞癌中hMLH1基因的启动子甲基化和人mutL homolog 1和人mutS homolog 2的蛋白质表达).J Thorac Cardiovasc Surg 2005;130:1371.
van Engeland M,Roemen GM,Brink M,Pachen MM,WeijenbergMP,de Bruine AP,et al.K-ras mutations and RASSF1A promotermethylation in colorectal cancer(结肠直肠癌中K-ras突变和RASSF 1A启动子甲基化).Oncogene 2002;21:3792-5.
Virmani AK,Muller C,Rathi A,Zoechbauer-Mueller S,Mathis M,Gazdar AF.Aberrant methylation during cervical carcinogenesis(宫颈癌发生中的异常甲基化).Clin Cancer Res 2001;7:584-9.
Wagner KJ,Cooper WN,Grundy RG,Caldwell G,Jones C,WadeyRB,et al.Frequent RASSF1A tumour suppressor gene promotermethylation in Wilms′tumour and colorectal cancer(Wilms′肿瘤和结肠直肠癌中经常性的RASSF1A肿瘤抑制基因启动子甲基化).Oncogene2002;21:7277-82.
Wenming C,Jiazhi Z,Shuzhen T,Bai X,Jingzhong L.Inactivation ofp16 gene in leukemia(白血病中p16基因的失活).Chin Med Sci J1999;14:206-10.
Xu XL,Yu J,Zhang HY,Sun MH,Gu J,Du X,et al.Methylationprofile of the promoter CpG islands of 31genes that may contribute tocolorectal carcinogenesis(可能促进结肠直肠癌发生的31个基因的启动子CpG岛的甲基化谱).World J Gastroenterol 2004;10:3441-54.
Yang B,Guo M,Herman JG,Clark DP.Aberrant promotermethylation profiles of tumor suppressor genes in hepatocellularcarcinoma(肝细胞癌中肿瘤抑制基因的异常启动子甲基化谱).Am JPathol 2003;163:1101-7.
Yang HJ,Liu VW,Wang Y,Chan KY,Tsang PC,Khoo US,et al.Detection of hypermethylated genes in tumor and plasma of cervicalcancer patients(在宫颈癌患者的肿瘤和血浆中检测超甲基化基因).Gynecol Oncol 2004;93:435-40.
Ye Y,Su C,Wang D,Liu S,Liu Y,Liu B,et al.Relationship betweentumor suppressor gene p 16and Rb and early diagnosis of lung cancers(肿瘤抑制基因p16和Rb与肺癌的早期诊断的关系).Zhonghua Wai Ke ZaZhi 2000;38:537-41,30.
Yegnasubramanian S,Kowalski J,Gonzalgo ML,Zahurak M,Piantadosi S,Walsh PC,et al.Hypermethylation of CpG islands inprimary and metastatic human prostate cancer(原发性和转移的人前列腺癌中CpG岛的超甲基化).Cancer Res 2004;64:1975-86.
Yeo W,Wong N,Wong WL,Lai PB,Zhong S,Johnson PJ.Highfrequency of promoter hypermethylation of RASSF1A in tumor andplasma of patients with hepatocellular carcinoma(肝细胞癌患者肿瘤和血浆中高频RASSF1A启动子超甲基化).Liver Int 2005;25:266-72.
Yeo W,Wong WL,Wong N,Law BK,Tse GM,Zhong S.Highfrequency of promoter hypermethylation of RASSF1A in tumorous andnon-tumourous tissue ofbreast cancer(乳腺癌肿瘤组织和非肿瘤组织中高频率的RASSF1A启动子超甲基化).Pathology 2005;37:125-30.
Yoon JH,Dammann R,Pfeifer GP.Hypermethylation of the CpGisland of the RASSF1A gene in ovarian and renal cell carcinomas(卵巢癌和肾细胞癌中RASSF1A基因的CpG岛的超甲基化).Int J Cancer2001;94:212-7.
Yoshikawa H,Matsubara K,Qian GS,Jackson P,Groopman JD,Manning JE,et al.SOCS-1,a negative regulator of the JAK/STATpathway,is silenced by methylation in human hepatocellular carcinomaand shows growth-suppression activity(SOCS-1(JAK/STAT途径的负调节基因)在肝细胞癌中被甲基化沉默并且显示生长抑制活性).NatGenet 2001;28:29-35.
Yu J,Ni M,Xu J,Zhang H,Gao B,Gu J,et al.Methylation profilingof twenty promoter-CpG islands of genes which may contribute tohepatocellular carcinogenesis(可能促进肝细胞癌产生的基因的20个启动子-CpG岛的甲基化谱).BMC Cancer 2002;2:29.
Zhong S,Yeo W,Tang MW,Wong N,Lai PB,Johnson PJ.Intensivehypermethylation of the CpG island of Ras association domain family 1Ain hepatitis B virus-associated hepatocellular carcinomas(乙型肝炎相关的肝细胞癌中Ras相关结构域家族1A的CpG岛的强烈超甲基化).ClinCancer Res 2003;9:3376-82.
Zochbauer-Muller S,Fong KM,Virmani AK,Geradts J,Gazdar AF,Minna JD.Aberrant promoter methylation of multiple genes in non-smallcell lung cancers(非小细胞肺癌中多个基因的异常启动子甲基化).Cancer Res 2001;61:249-55.
序列表
<110>香港中文大学
<120>检测DNA甲基化程度的方法和试剂盒
<130>06F1150-WDZ
<140>US 60/847,499
<141>2006-09-27
<160>7
<170>Patent In version 3.3
<210>1
<211>1381
<212>DNA
<213>Homo sapiens
<400>1
cctagatccc agaaatctgg gagcggctgg agcgagaaaa cagaggcaag tggcaggcaa 60
ttgccaagca ccagctccag catgtgttca gcccctcaga gcaggacctg cggctgcagg 120
cgcgaaggta aggcctgtgg aaatggcagg gagggtggag gggatgcagg aggcatggat 180
gtgggtgggg tgcccccacc ttccagggcc agtcagacct tcctgacttt cccccaggtg 240
ggctgagacc tacaggctgg atgtgctaga ggcagtggct ccagagcggc cccgctgtgc 300
ttactgcagt gcagaggctt ctaagcgctg ctcacgatgc cagaatgagt ggtattgctg 360
caggtgaggg tatcctagaa ccttggacct ctaagcccta ctcccacatc ccccacatgc 420
attgccatcc tcaataccca cctgcctgca gggagtgcca agtcaagcac tgggaaaagc 480
atggaaagac ttgtgtcctg gcagcccagg gtgacagagc caaatgaggg ctgcagttgc 540
tgagggccga ccacccatgc caagggaatc cacccagaat gcacccctga acctcaagat 600
cacggtccag cctctgccgg agccccagtc tccgcagtgg agagcagagc gggcggtaaa 660
gctgctgacc gatctccctc ctcctcaccc caagtgaagg ctcgagactt cctgccccac 720
ccagtgggta ggccaagtgt gttgcttcag caaaccggac caggagggcc agggccggat 780
gtggggaccc tcttcctcta gcacagtaaa gctggcctcc agaaacacgg gtatctccgc 840
gtggtgcttt gcggtcgccg tcgttgtggc cgtccggggt ggggtgtgag gaggggacga 900
aggagggaag gaagggcaag gcgggggggg ctctgcgaga gcgcgcccag ccccgccttc 960
gggccccaca gtccctgcac ccaggtttcc attgcgcggc tctcctcagc tccttcccgc 1020
cgcccagtct ggatcctggg ggaggcgctg aagtcggggc ccgccctgtg gccccgcccg 1080
gcccgcgctt gctagcgccc aaagccagcg aagcacgggc ccaaccgggc catgtcgggg 1140
gagcctgagc tcattgagct gcgggagctg gcacccgctg ggcgcgctgg gaagggccgc 1200
acccggctgg agcgtgccaa cgcgctgcgc atcgcgcggg gcaccgcgtg caaccccaca 1260
cggcagctgg tccctggccg tggccaccgc ttccagcccg cggggcccgc cacgcacacg 1320
tggtgcgacc tctgtggcga cttcatctgg ggcgtcgtgc gcaaaggcct gcagtgcgcg 1380
c 1381
<210>2
<211>20
<212>DNA
<213>用于RASSF1A的PCR引物
<400>2
agcctgagct cattgagctg 20
<210>3
<211>16
<212>DNA
<213>用于RASSF1A的PCR引物
<400>3
accagctgcc gtgtgg 16
<210>4
<211>16
<212>DNA
<213>用于RASSF1A的Q-PCR探针
<400>4
ccaacgcgct gcgcat 16
<210>5
<211>17
<212>DNA
<213>用于β-肌动蛋白基因的PCR引物
<400>5
gcgccgttcc gaaagtt 17
<210>6
<211>15
<212>DNA
<213>用于β-肌动蛋白基因的PCR引物
<400>6
cggcggatcg gcaaa 15
<210>7
<211>17
<212>DNA
<213>用于β-肌动蛋白基因的Q-PCR探针
<400>7
accgccgaga ccgcgtc 17
Claims (28)
1.检测或监测包含至少两个甲基化敏感限制酶识别位点的靶DNA序列的甲基化程度的方法,所述方法包括:
(a)以识别所述甲基化敏感限制酶识别位点的一种或多种甲基化敏感限制酶消化含有所述靶DNA序列的样品;以及
(b)定量消化后所述样品中残留的所述靶DNA序列,
其中步骤(b)中得到的所述靶DNA序列的水平表明所述甲基化程度。
2.如权利要求1所述的方法,其中在步骤(b)中采用聚合酶链式反应,且所述聚合酶链式反应的扩增子包含所述至少两个甲基化敏感限制酶识别位点。
3.如权利要求1所述的方法,其中在步骤(b)中采用实时定量聚合酶链式反应,且所述实时定量聚合酶链式反应的扩增子包含所述至少两个甲基化敏感限制酶识别位点。
4.如权利要求1、2或3所述的方法,其中所述靶DNA序列包含RASSF1A、其它肿瘤抑制基因或其它在癌症中表现出异常甲基化模式的基因的至少一部分。
5.如权利要求4所述的方法,其中所述靶DNA序列选自RASSF1A的启动子、外显子1或其片段。
6.如权利要求5所述的方法,其中所述甲基化敏感限制酶为BstUI。
7.如权利要求1所述的方法,其中当所述靶DNA序列以未甲基化状态存在时,消化后所述样品中的所述靶DNA序列在至少一个甲基化敏感限制酶识别位点处被所述甲基化敏感限制酶所切割。
8.如权利要求1所述的方法,其中在步骤(a)中,所述样品被过量的所述甲基化敏感限制酶处理,和/或延长孵育时间。
9.如权利要求1、2或3所述的方法,其中所述方法还包括定量所述样品中的对照DNA序列以评估酶消化的程度或证实酶消化的完全,所述对照DNA序列不在癌症中表现出异常的甲基化模式。
10.如权利要求9所述的方法,其中所述靶DNA序列中的所述至少两个甲基化敏感限制酶识别位点存在于所述对照DNA序列中。
11.如权利要求10所述的方法,其中相同数量的甲基化敏感限制酶识别位点存在于所述对照DNA序列和所述靶DNA序列中。
12.如权利要求9所述的方法,其中所述对照DNA序列包括β肌动蛋白基因序列的至少一部分。
13.如权利要求1所述的方法,其中所述样品为血液、血浆、血清、唾液或尿。
14.检测、预后或监测个体癌症的试剂盒,包括
(i)至少一种甲基化敏感限制酶;以及
(ii)定量来自所述个体的样品中靶DNA序列的单元,其中所述靶DNA序列在癌症中表现出异常甲基化模式,并且含有所述甲基化敏感限制酶能识别的至少两个甲基化敏感限制酶识别位点。
15.如权利要求14所述的试剂盒,其中定量所述靶DNA序列的所述单元包括用于聚合酶链式反应的试剂,所述聚合酶链式反应的扩增子包含所述至少两个甲基化限制酶识别位点。
16.如权利要求14所述的试剂盒,其中定量所述靶DNA序列的所述单元包括用于实时定量聚合酶链式反应的试剂,所述实时定量聚合酶链式反应的扩增子包含所述至少两个甲基化限制酶识别位点。
17.如权利要求14、15或16所述的试剂盒,其中所述靶DNA序列包含RASSF1A、其它肿瘤抑制基因或其它在癌症中证实具有异常甲基化模式的基因的至少一部分。
18.如权利要求17所述的试剂盒,其中所述靶DNA序列选自RASSF1A的启动子、外显子1或其片段。
19.如权利要求18所述的试剂盒,其中所述甲基化敏感限制酶为BstUI。
20.如权利要求17所述的试剂盒,其中所述试剂盒还包括用于定量所述样品中甲胎蛋白的单元。
21.如权利要求17所述的试剂盒,其中所述试剂盒还包括用于定量所述样品中EBV DNA的单元。
22.如权利要求14、15或16所述的试剂盒,其中所述试剂盒还包括用于定量对照DNA序列的单元,所述对照DNA单元不在所述癌症中表现出异常甲基化模式。
23.如权利要求21所述的试剂盒,其中在所述对照DNA序列中存在所述至少两个甲基化敏感限制酶识别位点。
24.如权利要求22所述的试剂盒,其中相同数量的甲基化限制酶识别位点存在于所述对照DNA序列和所述靶DNA序列中。
25.如权利要求21所述的试剂盒,其中所述对照DNA序列包括β肌动蛋白基因序列的至少一部分。
26.如权利要求14所述的试剂盒,其中所述癌症为肝细胞癌或鼻咽癌。
27.如权利要求14所述的试剂盒,其中所述个体为乙型肝炎或丙型肝炎携带者。
28.如权利要求14所述的试剂盒,其中所述样品为血液、血浆、血清、唾液或尿。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84749906P | 2006-09-27 | 2006-09-27 | |
US60/847,499 | 2006-09-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101153336A true CN101153336A (zh) | 2008-04-02 |
CN101153336B CN101153336B (zh) | 2011-09-07 |
Family
ID=38691712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2007100969763A Active CN101153336B (zh) | 2006-09-27 | 2007-04-23 | 检测dna甲基化程度的方法和试剂盒 |
Country Status (5)
Country | Link |
---|---|
US (5) | US9371566B2 (zh) |
CN (1) | CN101153336B (zh) |
HK (1) | HK1115167A1 (zh) |
TW (1) | TWI335354B (zh) |
WO (1) | WO2008038000A1 (zh) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104781422A (zh) * | 2012-09-20 | 2015-07-15 | 香港中文大学 | 从血浆无创测定胎儿或肿瘤的甲基化组 |
CN101570779B (zh) * | 2008-04-29 | 2016-02-17 | 赖鸿政 | 一种癌症筛检的方法 |
CN107592885A (zh) * | 2015-02-24 | 2018-01-16 | 兹莫研究公司 | 测定dna甲基化的分析法和癌症的dna甲基化标记 |
CN109609638A (zh) * | 2019-01-05 | 2019-04-12 | 敬善生物科技江苏有限公司 | 一种在鼻咽癌检测中应用的试剂盒及其应用 |
CN110607350A (zh) * | 2019-09-30 | 2019-12-24 | 国家烟草质量监督检验中心 | 一种基于G-四链体的鉴别BstUI甲基化敏感位点的方法 |
US10706957B2 (en) | 2012-09-20 | 2020-07-07 | The Chinese University Of Hong Kong | Non-invasive determination of methylome of tumor from plasma |
CN111926079A (zh) * | 2017-06-23 | 2020-11-13 | 成都睿杰森生物科技有限公司 | 一种快速检测传代干细胞恶性转化的试剂盒及其应用 |
US11274347B2 (en) | 2012-09-20 | 2022-03-15 | The Chinese University Of Hong Kong | Non-invasive determination of type of cancer |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI335354B (en) * | 2006-09-27 | 2011-01-01 | Univ Hong Kong Chinese | Methods for the detection of the degree of the methylation of a target dna and kits |
US20130065233A1 (en) * | 2010-03-03 | 2013-03-14 | Zymo Research Corporation | Detection of dna methylation |
US20140342940A1 (en) | 2011-01-25 | 2014-11-20 | Ariosa Diagnostics, Inc. | Detection of Target Nucleic Acids using Hybridization |
US20130261003A1 (en) | 2010-08-06 | 2013-10-03 | Ariosa Diagnostics, In. | Ligation-based detection of genetic variants |
US20130040375A1 (en) | 2011-08-08 | 2013-02-14 | Tandem Diagnotics, Inc. | Assay systems for genetic analysis |
US11031095B2 (en) | 2010-08-06 | 2021-06-08 | Ariosa Diagnostics, Inc. | Assay systems for determination of fetal copy number variation |
US8700338B2 (en) | 2011-01-25 | 2014-04-15 | Ariosa Diagnosis, Inc. | Risk calculation for evaluation of fetal aneuploidy |
US10533223B2 (en) | 2010-08-06 | 2020-01-14 | Ariosa Diagnostics, Inc. | Detection of target nucleic acids using hybridization |
US10167508B2 (en) | 2010-08-06 | 2019-01-01 | Ariosa Diagnostics, Inc. | Detection of genetic abnormalities |
US20120034603A1 (en) | 2010-08-06 | 2012-02-09 | Tandem Diagnostics, Inc. | Ligation-based detection of genetic variants |
US11203786B2 (en) | 2010-08-06 | 2021-12-21 | Ariosa Diagnostics, Inc. | Detection of target nucleic acids using hybridization |
US10131947B2 (en) | 2011-01-25 | 2018-11-20 | Ariosa Diagnostics, Inc. | Noninvasive detection of fetal aneuploidy in egg donor pregnancies |
US9994897B2 (en) | 2013-03-08 | 2018-06-12 | Ariosa Diagnostics, Inc. | Non-invasive fetal sex determination |
US11270781B2 (en) | 2011-01-25 | 2022-03-08 | Ariosa Diagnostics, Inc. | Statistical analysis for non-invasive sex chromosome aneuploidy determination |
US8756020B2 (en) | 2011-01-25 | 2014-06-17 | Ariosa Diagnostics, Inc. | Enhanced risk probabilities using biomolecule estimations |
US8712697B2 (en) | 2011-09-07 | 2014-04-29 | Ariosa Diagnostics, Inc. | Determination of copy number variations using binomial probability calculations |
US10289800B2 (en) | 2012-05-21 | 2019-05-14 | Ariosa Diagnostics, Inc. | Processes for calculating phased fetal genomic sequences |
AU2013292287A1 (en) | 2012-07-19 | 2015-02-19 | Ariosa Diagnostics, Inc. | Multiplexed sequential ligation-based detection of genetic variants |
US9598735B2 (en) * | 2012-11-14 | 2017-03-21 | JBS Science Inc. | Detection of a panel of urine DNA markers for HCC screening and disease management |
US10480021B2 (en) * | 2014-06-23 | 2019-11-19 | Yale University | Methods for closed chromatin mapping and DNA methylation analysis for single cells |
DK3543356T3 (da) | 2014-07-18 | 2021-10-11 | Univ Hong Kong Chinese | Analyse af methyleringsmønster af væv i DNA-blanding |
EP3172341A4 (en) | 2014-07-25 | 2018-03-28 | University of Washington | Methods of determining tissues and/or cell types giving rise to cell-free dna, and methods of identifying a disease or disorder using same |
US11399995B2 (en) | 2016-02-23 | 2022-08-02 | Deka Products Limited Partnership | Mobility device |
US10926756B2 (en) | 2016-02-23 | 2021-02-23 | Deka Products Limited Partnership | Mobility device |
CN109804086B (zh) | 2016-08-10 | 2023-06-13 | 格里尔公司 | 制备双标签dna库用于亚硫酸盐转化定序的方法 |
KR20230062684A (ko) | 2016-11-30 | 2023-05-09 | 더 차이니즈 유니버시티 오브 홍콩 | 소변 및 기타 샘플에서의 무세포 dna의 분석 |
CA3094717A1 (en) | 2018-04-02 | 2019-10-10 | Grail, Inc. | Methylation markers and targeted methylation probe panels |
WO2019209884A1 (en) | 2018-04-23 | 2019-10-31 | Grail, Inc. | Methods and systems for screening for conditions |
CN113286881A (zh) | 2018-09-27 | 2021-08-20 | 格里尔公司 | 甲基化标记和标靶甲基化探针板 |
Family Cites Families (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451759A (en) * | 1920-12-03 | 1923-04-17 | Krupp Ag | Automatic weighing apparatus for loose materials |
JPH07106152B2 (ja) * | 1986-05-10 | 1995-11-15 | 宝酒造株式会社 | ヒトβ―アクチン遺伝子のプロモーター |
US6630301B1 (en) | 1997-03-14 | 2003-10-07 | The Penn State Research Foundation | Detection of extracellular tumor-associated nucleic acid in blood plasma or serum |
US20010051341A1 (en) | 1997-03-04 | 2001-12-13 | Isis Innovation Limited | Non-invasive prenatal diagnosis |
GB9704444D0 (en) | 1997-03-04 | 1997-04-23 | Isis Innovation | Non-invasive prenatal diagnosis |
US6355623B2 (en) | 1998-09-24 | 2002-03-12 | Hopital-Sainte-Justine | Method of treating IBD/Crohn's disease and related conditions wherein drug metabolite levels in host blood cells determine subsequent dosage |
US7700324B1 (en) | 1998-11-03 | 2010-04-20 | The Johns Hopkins University School Of Medicine | Methylated CpG island amplification (MCA) |
US8076063B2 (en) | 2000-02-07 | 2011-12-13 | Illumina, Inc. | Multiplexed methylation detection methods |
US6596488B2 (en) * | 2000-03-30 | 2003-07-22 | City Of Hope | Tumor suppressor gene |
DE60136212D1 (de) | 2000-08-15 | 2008-11-27 | Univ Johns Hopkins Med | Diagnose und behandlung von tumor-suppressor assoziierten krankheiten |
EP1352089B1 (en) | 2000-08-25 | 2006-12-06 | Lovelace Respiratory Research Institute | Nested methylation-specific polymerase chain reaction cancer detection method |
AU2001296511A1 (en) | 2000-09-29 | 2002-04-08 | The Johns Hopkins University School Of Medicine | Method of predicting the clinical response to chemotherapeutic treatment with alkylating agents |
US6664056B2 (en) | 2000-10-17 | 2003-12-16 | The Chinese University Of Hong Kong | Non-invasive prenatal monitoring |
US6756200B2 (en) | 2001-01-26 | 2004-06-29 | The Johns Hopkins University School Of Medicine | Aberrantly methylated genes as markers of breast malignancy |
US6753137B2 (en) | 2001-01-31 | 2004-06-22 | The Chinese University Of Hong Kong | Circulating epstein-barr virus DNA in the serum of patients with gastric carcinoma |
US20030228575A1 (en) | 2001-01-31 | 2003-12-11 | Yuk Ming Dennis Lo | Combination of circulating epstein-barr virus (EBV) DNA in the serum or plasma of patients and a method to assess EBV subtypes for the prediction and detection of epstein-barr virus associated cancers |
US6893820B1 (en) | 2001-01-31 | 2005-05-17 | The Ohio State University Research Foundation | Detection of methylated CpG rich sequences diagnostic for malignant cells |
DE10139283A1 (de) | 2001-08-09 | 2003-03-13 | Epigenomics Ag | Verfahren und Nukleinsäuren zur Analyse von Colon-Krebs |
US6927028B2 (en) | 2001-08-31 | 2005-08-09 | Chinese University Of Hong Kong | Non-invasive methods for detecting non-host DNA in a host using epigenetic differences between the host and non-host DNA |
CN1200112C (zh) | 2002-04-15 | 2005-05-04 | 上海市肿瘤研究所 | 肝癌相关基因启动子CpG岛的甲基化状态及其应用 |
US7727720B2 (en) | 2002-05-08 | 2010-06-01 | Ravgen, Inc. | Methods for detection of genetic disorders |
US20040009518A1 (en) | 2002-05-14 | 2004-01-15 | The Chinese University Of Hong Kong | Methods for evaluating a disease condition by nucleic acid detection and fractionation |
US7022478B2 (en) | 2002-05-14 | 2006-04-04 | The Chinese University Of Hong Kong | Methods for evaluating stroke or cardiac ischemia by nucleic acid detection |
AU2003251483A1 (en) | 2002-06-05 | 2003-12-22 | Case Western Reserve University | Methods and compositions for detecting cancers |
AU2003279101A1 (en) | 2002-10-02 | 2004-04-23 | Northwestern University | Methylation profile of cancer |
US20040086864A1 (en) | 2002-10-22 | 2004-05-06 | The Chinese University Of Hong Kong | Novel classification methods for pleural effusions |
JP4624977B2 (ja) | 2003-01-17 | 2011-02-02 | ザ チャイニーズ ユニバーシティ オブ ホンコン | 妊娠障害診断マーカーとしての血中mRNA |
US20050026183A1 (en) | 2003-05-15 | 2005-02-03 | Jian-Bing Fan | Methods and compositions for diagnosing conditions associated with specific DNA methylation patterns |
US8150626B2 (en) | 2003-05-15 | 2012-04-03 | Illumina, Inc. | Methods and compositions for diagnosing lung cancer with specific DNA methylation patterns |
TW591698B (en) * | 2003-08-18 | 2004-06-11 | Au Optronics Corp | Thin film transistor array substrate and photolithography process and mask design thereof |
EP2354253A3 (en) | 2003-09-05 | 2011-11-16 | Trustees of Boston University | Method for non-invasive prenatal diagnosis |
US20050112558A1 (en) | 2003-09-24 | 2005-05-26 | The Chinese University Of Hong Kong | Prognostic PCR assay for severe acute respiratory syndrome (SARS) |
US7655399B2 (en) | 2003-10-08 | 2010-02-02 | Trustees Of Boston University | Methods for prenatal diagnosis of chromosomal abnormalities |
JP4917891B2 (ja) | 2003-10-21 | 2012-04-18 | オリオン ゲノミクス エルエルシー | 差次的酵素的断片化の方法 |
JP3845416B2 (ja) * | 2003-12-01 | 2006-11-15 | 株式会社ポストゲノム研究所 | 遺伝子タグの取得方法 |
US20050196792A1 (en) | 2004-02-13 | 2005-09-08 | Affymetrix, Inc. | Analysis of methylation status using nucleic acid arrays |
US20050287553A1 (en) | 2004-04-06 | 2005-12-29 | Epigenomics Ag | Method for the quantification of methylated DNA |
US7709194B2 (en) | 2004-06-04 | 2010-05-04 | The Chinese University Of Hong Kong | Marker for prenatal diagnosis and monitoring |
DE102004029700A1 (de) | 2004-06-15 | 2006-02-09 | Epigenomics Ag | Verfahren zur Quantifizierung methylierter DNA |
DK1659186T3 (da) | 2004-10-11 | 2008-09-22 | Epigenomics Ag | Fremgangsmåde til kontaminationsbeskyttelse i DNA-amplifikationssystemer til methyleringsanalyse opnået ved en modificeret forbehandling af nukleinsyrer |
CA2599055C (en) * | 2005-02-14 | 2016-01-12 | The Johns Hopkins University | Neoplasia screening compositions and methods of use |
TWI367259B (en) | 2005-03-18 | 2012-07-01 | Univ Hong Kong Chinese | A method for the detection of chromosomal aneuploidies |
US20060212461A1 (en) | 2005-03-21 | 2006-09-21 | Meysman David J | System for organizing a plurality of data sources into a plurality of taxonomies |
US20060252723A1 (en) * | 2005-04-01 | 2006-11-09 | Methylgene, Inc. The Cleveland Clinic Foundation | Combined therapy utilizing reduction of DNA methyltransferase expression and/or activity and interferon |
ES2533767T3 (es) | 2005-04-15 | 2015-04-15 | Epigenomics Ag | Métodos para el análisis de trastornos proliferativos celulares |
US20060292585A1 (en) | 2005-06-24 | 2006-12-28 | Affymetrix, Inc. | Analysis of methylation using nucleic acid arrays |
US20070059753A1 (en) | 2005-09-15 | 2007-03-15 | Tatiana Vener | Detecting gene methylation |
WO2007106802A2 (en) | 2006-03-14 | 2007-09-20 | Siemens Healthcare Diagnostics Inc. | Method for linear amplification of bisulfite converted dna |
US7901882B2 (en) * | 2006-03-31 | 2011-03-08 | Affymetrix, Inc. | Analysis of methylation using nucleic acid arrays |
US7901884B2 (en) | 2006-05-03 | 2011-03-08 | The Chinese University Of Hong Kong | Markers for prenatal diagnosis and monitoring |
US7754428B2 (en) * | 2006-05-03 | 2010-07-13 | The Chinese University Of Hong Kong | Fetal methylation markers |
TWI335354B (en) | 2006-09-27 | 2011-01-01 | Univ Hong Kong Chinese | Methods for the detection of the degree of the methylation of a target dna and kits |
US7899626B2 (en) | 2007-01-10 | 2011-03-01 | Illumina, Inc. | System and method of measuring methylation of nucleic acids |
JP5378687B2 (ja) | 2007-03-02 | 2013-12-25 | エフ.ホフマン−ラ ロシュ アーゲー | Basp1遺伝子および/またはsrd5a2遺伝子中のメチル化シトシンを利用する、肝臓癌、肝臓癌発症リスク、肝臓癌再発リスク、肝臓癌悪性度および肝臓癌の経時的進展の検出方法 |
US20100112590A1 (en) | 2007-07-23 | 2010-05-06 | The Chinese University Of Hong Kong | Diagnosing Fetal Chromosomal Aneuploidy Using Genomic Sequencing With Enrichment |
US20110028333A1 (en) | 2009-05-01 | 2011-02-03 | Brown University | Diagnosing, prognosing, and early detection of cancers by dna methylation profiling |
US20120208711A1 (en) | 2009-10-02 | 2012-08-16 | Centre For Addiction And Mental Health | Method for Analysis of DNA Methylation Profiles of Cell-Free Circulating DNA in Bodily Fluids |
PL2529032T3 (pl) | 2010-01-26 | 2017-07-31 | Nipd Genetics Ltd | Sposoby i kompozycje do nieinwazyjnego prenatalnego diagnozowania aneuploidii płodu |
US20130079241A1 (en) | 2011-09-15 | 2013-03-28 | Jianhua Luo | Methods for Diagnosing Prostate Cancer and Predicting Prostate Cancer Relapse |
JPWO2013132868A1 (ja) | 2012-03-07 | 2015-07-30 | パナソニックIpマネジメント株式会社 | 複層ガラス |
US9892230B2 (en) | 2012-03-08 | 2018-02-13 | The Chinese University Of Hong Kong | Size-based analysis of fetal or tumor DNA fraction in plasma |
ES2665273T5 (es) | 2012-09-20 | 2023-10-02 | Univ Hong Kong Chinese | Determinación no invasiva de metiloma del feto o tumor de plasma |
US9732390B2 (en) | 2012-09-20 | 2017-08-15 | The Chinese University Of Hong Kong | Non-invasive determination of methylome of fetus or tumor from plasma |
CN111863131A (zh) | 2013-10-07 | 2020-10-30 | 塞昆纳姆股份有限公司 | 用于非侵入性评估染色体改变的方法和过程 |
DK3543356T3 (da) | 2014-07-18 | 2021-10-11 | Univ Hong Kong Chinese | Analyse af methyleringsmønster af væv i DNA-blanding |
CN113957124A (zh) | 2015-02-10 | 2022-01-21 | 香港中文大学 | 用于癌症筛查和胎儿分析的突变检测 |
-
2007
- 2007-04-23 TW TW096114234A patent/TWI335354B/zh active
- 2007-04-23 CN CN2007100969763A patent/CN101153336B/zh active Active
- 2007-09-26 WO PCT/GB2007/003674 patent/WO2008038000A1/en active Application Filing
- 2007-09-26 US US11/861,809 patent/US9371566B2/en active Active
-
2008
- 2008-05-05 HK HK08104936.1A patent/HK1115167A1/xx unknown
-
2014
- 2014-05-22 US US14/284,724 patent/US20140272975A1/en not_active Abandoned
-
2016
- 2016-05-23 US US15/162,258 patent/US10435754B2/en active Active - Reinstated
-
2019
- 2019-08-29 US US16/555,609 patent/US11898208B2/en active Active
-
2024
- 2024-01-12 US US18/412,413 patent/US20240279743A1/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105586408B (zh) * | 2008-04-29 | 2021-03-23 | 赖鸿政 | 一种癌症筛检的方法 |
CN101570779B (zh) * | 2008-04-29 | 2016-02-17 | 赖鸿政 | 一种癌症筛检的方法 |
CN105586408A (zh) * | 2008-04-29 | 2016-05-18 | 赖鸿政 | 一种癌症筛检的方法 |
US11274347B2 (en) | 2012-09-20 | 2022-03-15 | The Chinese University Of Hong Kong | Non-invasive determination of type of cancer |
US10706957B2 (en) | 2012-09-20 | 2020-07-07 | The Chinese University Of Hong Kong | Non-invasive determination of methylome of tumor from plasma |
CN104781422A (zh) * | 2012-09-20 | 2015-07-15 | 香港中文大学 | 从血浆无创测定胎儿或肿瘤的甲基化组 |
CN104781422B (zh) * | 2012-09-20 | 2023-12-26 | 香港中文大学 | 从血浆无创测定胎儿或肿瘤的甲基化组 |
CN107592885A (zh) * | 2015-02-24 | 2018-01-16 | 兹莫研究公司 | 测定dna甲基化的分析法和癌症的dna甲基化标记 |
CN111926079A (zh) * | 2017-06-23 | 2020-11-13 | 成都睿杰森生物科技有限公司 | 一种快速检测传代干细胞恶性转化的试剂盒及其应用 |
CN109609638A (zh) * | 2019-01-05 | 2019-04-12 | 敬善生物科技江苏有限公司 | 一种在鼻咽癌检测中应用的试剂盒及其应用 |
CN109609638B (zh) * | 2019-01-05 | 2022-08-02 | 敬善生物科技江苏有限公司 | 一种在鼻咽癌检测中应用的试剂盒及其应用 |
CN110607350A (zh) * | 2019-09-30 | 2019-12-24 | 国家烟草质量监督检验中心 | 一种基于G-四链体的鉴别BstUI甲基化敏感位点的方法 |
CN110607350B (zh) * | 2019-09-30 | 2022-08-16 | 国家烟草质量监督检验中心 | 一种基于G-四链体的鉴别BstUI甲基化敏感位点的方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2008038000A1 (en) | 2008-04-03 |
US10435754B2 (en) | 2019-10-08 |
US20080081338A1 (en) | 2008-04-03 |
US20240279743A1 (en) | 2024-08-22 |
TWI335354B (en) | 2011-01-01 |
HK1115167A1 (en) | 2008-11-21 |
US9371566B2 (en) | 2016-06-21 |
US20200071771A1 (en) | 2020-03-05 |
CN101153336B (zh) | 2011-09-07 |
WO2008038000A8 (en) | 2008-12-24 |
US20170101685A1 (en) | 2017-04-13 |
US11898208B2 (en) | 2024-02-13 |
US20140272975A1 (en) | 2014-09-18 |
TW200815755A (en) | 2008-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101153336B (zh) | 检测dna甲基化程度的方法和试剂盒 | |
CN102686744B (zh) | 用于检测结肠直肠癌的sdc2甲基化 | |
KR20180129878A (ko) | 소변에서 암의 검출 | |
US20120034605A1 (en) | Method for detection of colorectal tumor | |
KR101636596B1 (ko) | 검사 표지로서 표적 유전자의 메틸화율을 검출하는 방법 | |
US20220186319A1 (en) | Biomarkers for Cervical Cancer | |
US10167513B2 (en) | Compositions and methods for detecting a neoplasia | |
EP2304057A2 (en) | Method for the detection of ovarian cancer | |
WO2011036173A1 (en) | Detection and prognosis of cervical cancer | |
JP7133039B2 (ja) | 腫瘍マーカー、メチル化検出試薬、キット及びその使用 | |
JP7123177B2 (ja) | 腫瘍マーカー、メチル化検出試薬、キット及びその使用 | |
KR101504069B1 (ko) | 담관선암 검출 또는 진단용 메틸화 마커 및 방법 | |
JPWO2020116573A1 (ja) | 子宮体癌の予後の判定方法 | |
WO2019233448A1 (zh) | 肺癌早期dna甲基化标志物检测试纸盒和检测方法 | |
JP6877704B2 (ja) | 膵臓癌の検出のための方法及びキット | |
KR101587635B1 (ko) | 갑상선암 진단을 위한 갑상선암 특이적 메틸화 마커 유전자의 메틸화 검출방법 | |
RU2775177C1 (ru) | Опухолевый маркер, реагент для выявления метилирования, набор и их применение | |
TWI730327B (zh) | 腫瘤標誌物、甲基化檢測試劑、試劑盒及其應用 | |
KR101637338B1 (ko) | Hbd-2 유전자 프로모터의 메틸화 여부 검출 방법 및 이를 이용한 암 진단용 조성물 | |
Brajušković et al. | Assessment of possible association between rs378854 and prostate cancer risk in the Serbian population | |
CN117821587A (zh) | 甲基化的id4基因在制备用于诊断幽门螺旋杆菌阳性胃癌产品中的应用 | |
KR101136505B1 (ko) | 장암 진단을 위한 장암 특이적 메틸화 마커 유전자의 메틸화 검출방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1115167 Country of ref document: HK |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1115167 Country of ref document: HK |