CN101333560B - 嘌呤类药物敏感基因检测试剂盒 - Google Patents

嘌呤类药物敏感基因检测试剂盒 Download PDF

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CN101333560B
CN101333560B CN2007100432255A CN200710043225A CN101333560B CN 101333560 B CN101333560 B CN 101333560B CN 2007100432255 A CN2007100432255 A CN 2007100432255A CN 200710043225 A CN200710043225 A CN 200710043225A CN 101333560 B CN101333560 B CN 101333560B
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CN101333560A (zh
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穆海东
汪宁梅
杜喜玲
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Shanghai Yulong Biological Science and Technology Co Ltd
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Abstract

本发明提供一种嘌呤类药物敏感基因芯片检测试剂盒,属于临床检测的基因芯片技术领域,可用于平行经济地检测与嘌呤类药物敏感的相关基因。该试剂盒包括抽提液、杂交缓冲液、洗液、扩增液、Taq酶、基因芯片,所述的扩增液含有扩增巯基嘌呤甲基转移酶(TPMT)上3个突变位点基因的引物,3个突变位点分别是238,460和719。嘌呤类药物用于治疗急性淋巴细胞白血病,本发明可用于检测对嘌呤类药物敏感的TMPT基因上述3个位点突变情况。

Description

嘌呤类药物敏感基因检测试剂盒
技术领域
本发明属于临床检测的基因芯片技术领域,具体地说涉及一种嘌呤类药物敏感基因检测试剂盒。
背景技术
目前研究结果表明,治疗急性淋巴细胞白血病的巯嘌呤代谢药物——6-巯基嘌呤和6-巯代鸟嘌呤均是无内在生物活性的药物,必须通过体内一系列代谢后才能发挥药效。而人体的巯基嘌呤甲基转移酶(TPMT)的代谢酶在此类药物代谢和抗白血病作用中起关键作用。TPMT上含有的突变位点与人体对嘌呤类药物的敏感性有关。
目前用于检测5氟尿嘧啶单位点突变的方法主要有:测序法,这是最直接,最准确的方法,;荧光定量PCR法,和单碱基延伸法。这些方法所需要的设备仪器都价格昂贵,技术复杂,从经济上考虑不适于用作常规方法加以推广。
发明内容
为了对嘌呤类药物敏感的相关基因进行平行检测,对大量样本进行同时分析,并考虑经济推广的可行性,本发明选择TPMT的三个突变位点作为检测对象,提供一种嘌呤类药物敏感基因芯片检测试剂盒,包括抽提液、杂交缓冲液、洗液、扩增液、Taq酶、基因芯片;其特征在于,所含的扩增液含有扩增巯基嘌呤甲基转移酶(TPMT)基因上3个突变位点序列的引物,3个突变位点分别是238,460和719。
所述的嘌呤类药物敏感基因检测试剂盒,其特征在于,扩增液可以包含以下一组序列的引物:
238-1:TGAAACCCTATGAACCTG
238-2:TCCAGGAATTTCGGTGT
460-1:GTTGAAGTACCAGCATG
460-2:CCTGGATTGATGGCAA
719-1:GGTTGATGCTTTTGAAGAA
719-2:CAATCTGCAAGACACATAG
所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于,还可以包括扩增液B,扩增液B中包含如下一组序列的ASPE(Allele-Specific Primer Extension,即等位基因特特性引物延伸)引物:
238-G:5’-ATTTTATGCAGGTTTG
238-C:5’-ATTTTATGCAGGTTTC
460-G:5’-GGATAGAGGAG
460-A:5’-GGGATAGAGGAA
719-A:5’-TCTTTTTGAAAAGTTATA
719-G:5’-TCTTTTTGAAAAGTTATG
所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于,扩增液B中包含的ASPE引物还可以是含有5’-端检测定位序列的如下序列:
238-G:5’-CAATTCATTTCATTCACAATCAATTTTATGCAGGTTTG
238-C:5’-CAATATACCAATATCATCATTTATTTTATGCAGGTTTC
460-G:5’-TCAATCATCTTTATACTTCACATGGGATAGAGGAG
460-A:5’-CTTTTTCAATCACTTTCAATATTTGGGATAGAGGAA
719-A:5’-CAATTTACTCATATACATCACTTTCTTTTTGAAAAGTTATA
719-G:5’-CTACTAATTCATTAACATTACTATCTTTTTGAAAAGTTATG
所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于,扩增液B含有生物素标记的dCTP。
所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于,所含的基因芯片上的探针序列可以是以下一组序列:
POS-1:ATTGATTGTGAATGAAATGAATTG
POS-2:GTAAATGATGATATTGGTATATTG
POS-3:ATTGTGAAGTATAAAGATGATTGA
POS-4:ATGAATTGAAAGTGATTGAAAAAG
POS-5:AAAGTGATGTATATGAGTAAATTG
POS-6:GTAGTAATGTTAATGAATTAGTAG
该试剂盒通过将嘌呤类所涉及的药物敏感基因巯基嘌呤甲基转移酶(TPMT)基因上的3个突变位点结合在一起,达到对相关基因进行平行检测的目的。另外通过将ASPE法与化学发光法相结合,检测单位点突变,优点在于:(1)结果准确,(2)通量大,(3)背景低,(4)操作简便,(5)无需大型仪器。
附图说明
图1为检测试剂盒应用流程图
图2为试剂盒中所含嘌呤类药物敏感基因检测芯片示意图
具体实施方式
下面结合附图和举例说明本发明目的的实施。
实施例子:
1.样本处理
用口腔粘膜脱落细胞作为样本来源,进行基因组DNA抽提。抽提使用博大泰克的细胞基因组抽提试剂盒。
2.芯片制备,将文献中已有标记定位探针在超平玻片上点样,探针序列如下:
POS-1:ATTGATTGTGAATGAAATGAATTG
POS-2:GTAAATGATGATATTGGTATATTG
POS-3:ATTGTGAAGTATAAAGATGATTGA
POS-4:ATGAATTGAAAGTGATTGAAAAAG
POS-5:AAAGTGATGTATATGAGTAAATTG
POS-6:GTAGTAATGTTAATGAATTAGTAG
3.引物设计:
(1)设计以下引物序列组A,用以扩增TMPT基因上,与嘌呤类药物敏感相关的3个基因片断,分别含突变位点238,460和719。
238-1:TGAAACCCTATGAACCTG
238-2:TCCAGGAATTTCGGTGT
460-1:GTTGAAGTACCAGCATG
460-2:CCTGGATTGATGGCAA
719-1:GGTTGATGCTTTTGAAGAA
719-2:CAATCTGCAAGACACATAG
(2)设计以下ASPE引物序列组B,用以扩增含突变位点的序列,同时引进用于基因检测定位的标记序列,以便与芯片上相应的定位探针杂交,从而获得检测结果。
238-G:5’-CAATTCATTTCATTCACAATCAATTTTATGCAGGTTTG
238-C:5’-CAATATACCAATATCATCATTTATTTTATGCAGGTTTC
460-G:5’-TCAATCATCTTTATACTTCACATGGGATAGAGGAG
460-A:5’-CTTTTTCAATCACTTTCAATATTTGGGATAGAGGAA
719-A:5’-CAATTTACTCATATACATCACTTTCTTTTTGAAAAGTTATA
719-G:5’-CTACTAATTCATTAACATTACTATCTTTTTGAAAAGTTATG
4.PCR扩增待测片断并引入生物素标记。用引物序列组A扩增含待测突变位点的序列,用ASPE引物序列组B扩增含突变位点的序列,扩增时加入含生物素标记的dCTP,同此引入对样本产物检测所需的生物素标记。
5.杂交检测
按以下步骤对得到的相应样本产物进行杂交检测:
(1)将扩增得到的标记产物与杂交液(5×SSC,0.2%SDS)以1:6的比例混合,加入反应区域,50ul。
(2)42℃保温保湿反应60分钟。
(3)用洗液(2×SSC,0.1%SDS)洗涤4-6次,每次2分钟,振动。
(4)加入HRP标记的亲和素反应液,50ul。
(5)在42℃反应15-20min。
(6)用洗液(2×SSC,0.1%SDS)洗涤4-6次,每次2分钟,晃动。
(7)加检测液20ul/孔,使检测液均匀分布于反应区域。
(8)CCD检测,视发光信号强度曝光30-60秒。
6.结果判定:
依据不同指标的CutOff值,参考标准品梯度曲线,判定样本的阴阳性。
与此同时,用常规方法对测试的样本进行常规检测。结果表明,用本发明的试剂盒得出的测试结果与常规方法相同。
序列表
238-1:TGAAACCCTATGAACCTG
238-2:TCCAGGAATTTCGGTGT
460-1:GTTGAAGTACCAGCATG
460-2:CCTGGATTGATGGCAA
719-1:GGTTGATGCTTTTGAAGAA
719-2:CAATCTGCAAGACACATAG
238-G:5’-ATTTTATGCAGGTTTG
238-C:5’-ATTTTATGCAGGTTTC
460-G:5’-GGATAGAGGAG
460-A:5’-GGGATAGAGGAA
719-A:5’-TCTTTTTGAAAAGTTATA
719-G:5’-TCTTTTTGAAAAGTTATG
238-G:5’-CAATTCATTTCATTCACAATCAATTTTATGCAGGTTTG
238-C:5’-CAATATACCAATATCATCATTTATTTTATGCAGGTTTC
460-G:5’-TCAATCATCTTTATACTTCACATGGGATAGAGGAG
460-A:5’-CTTTTTCAATCACTTTCAATATTTGGGATAGAGGAA
719-A:5’-CAATTTACTCATATACATCACTTTCTTTTTGAAAAGTTATA
719-G:5’-CTACTAATTCATTAACATTACTATCTTTTTGAAAAGTTATG
POS-1:ATTGATTGTGAATGAAATGAATTG
POS-2:GTAAATGATGATATTGGTATATTG
POS-3:ATTGTGAAGTATAAAGATGATTGA
POS-4:ATGAATTGAAAGTGATTGAAAAAG
POS-5:AAAGTGATGTATATGAGTAAATTG
POS-6:GTAGTAATGTTAATGAATTAGTAG

Claims (5)

1.一种嘌呤类药物敏感基因芯片检测试剂盒,包括抽提液、杂交缓冲液、洗液、扩增液、Taq酶、基因芯片,其特征在于:所含的扩增液含有扩增巯基嘌呤甲基转移酶(TPMT)基因上3个突变位点序列的引物,3个突变位点分别是238,460和719;所述的扩增液包含以下一组序列的引物:
238-1:TGAAACCCTATGAACCTG
238-2:TCCAGGAATTTCGGTGT
460-1:GTTGAAGTACCAGCATG
460-2:CCTGGATTGATGGCAA
719-1:GGTTGATGCTTTTGAAGAA
719-2:CAATCTGCAAGACACATAG。
2.根据权利要求1所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于:还包括扩增液B,扩增液B包含如下一组序列的ASPE(Allele-Specific Primer Extension,即等位基因特异性引物延伸)引物:
238-G:5’- ATTTTATGCAGGTTTG
238-C:5’-ATTTTATGCAGGTTTC
460-G:5’-GGATAGAGGAG
460-A:5’-GGGATAGAGGAA
719-A:5’-TCTTTTTGAAAAGTTATA
719-G:5’-TCTTTTTGAAAAGTTATG。
3.根据权利要求2所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于:所述的扩增液B中包含的ASPE引物还是含有5’-端检测定位序列的如下序列:
238-G:5’- CAATTCATTTCATTCACAATCAATTTTATGCAGGTTTG
238-C:5’-CAATATACCAATATCATCATTTATTTTATGCAGGTTTC
460-G:5’-TCAATCATCTTTATACTTCACATGGGATAGAGGAG
460-A:5’-CTTTTTCAATCACTTTCAATATTTGGGATAGAGGAA
719-A:5’-CAATTTACTCATATACATCACTTTCTTTTTGAAAAGTTATA
719-G:5’-CTACTAATTCATTAACATTACTATCTTTTTGAAAAGTTATG。
4.根据权利要求2或3所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于:所述的扩增液B含有生物素标记的dCTP。
5.根据权利要求3所述的嘌呤类药物敏感基因芯片检测试剂盒,其特征在于,所含的基因芯片上的探针序列是以下一组序列: 
POS-1: ATTGATTGTGAATGAAATGAATTG
POS-2: GTAAATGATGATATTGGTATATTG
POS-3: ATTGTGAAGTATAAAGATGATTGA
POS-4: ATGAATTGAAAGTGATTGAAAAAG
POS-5: AAAGTGATGTATATGAGTAAATTG
POS-6: GTAGTAATGTTAATGAATTAGTAG。
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CN102676667A (zh) * 2012-05-04 2012-09-19 周宏灏 焦磷酸测序法检测巯嘌呤个体化用药基因多态性的试剂盒及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007201A1 (en) * 1995-08-14 1997-02-27 St. Jude Children's Research Hospital Identification of two novel mutant alleles of human thiopurine s-methyltransferase, and diagnostic uses thereof
US5856095A (en) * 1995-08-14 1999-01-05 St. Jude Children's Research Hospital Identification of two novel mutant alleles of human thiopurine S-methyltransferase, and diagnostic uses thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007201A1 (en) * 1995-08-14 1997-02-27 St. Jude Children's Research Hospital Identification of two novel mutant alleles of human thiopurine s-methyltransferase, and diagnostic uses thereof
US5856095A (en) * 1995-08-14 1999-01-05 St. Jude Children's Research Hospital Identification of two novel mutant alleles of human thiopurine S-methyltransferase, and diagnostic uses thereof

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