CN104946786B - 一种检测前列腺癌易感性的方法及试剂盒 - Google Patents

一种检测前列腺癌易感性的方法及试剂盒 Download PDF

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CN104946786B
CN104946786B CN201510430981.8A CN201510430981A CN104946786B CN 104946786 B CN104946786 B CN 104946786B CN 201510430981 A CN201510430981 A CN 201510430981A CN 104946786 B CN104946786 B CN 104946786B
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冯宁翰
吕永杰
冯杨焜
毛雪莹
鲁晓杰
张越洲
邵宁
汪洋
温丽婷
徐新宇
王纯才
包文平
吴子晨
黄锐
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Abstract

本发明涉及前列腺癌早期诊断领域,公开了一种检测前列腺癌易感性的方法及试剂盒,通过提取被测者外周血的DNA;对所述被测者外周血的DNA的8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号SNP位点进行荧光定量PCR检测,确定该位点的基因型;对基因型进行分析;根据基因型的分析结果,计算被检测者前列腺癌易感程度的高低以及患病概率大小。掌握了中国人群患前列腺癌的风险,提高了中国人群前列腺癌易感性的准确检测。

Description

一种检测前列腺癌易感性的方法及试剂盒
技术领域
本发明涉及前列腺癌早期诊断领域,尤其涉及一种检测前列腺癌易感性的方法及试剂盒。
背景技术
前列腺癌是男性最常见的恶性肿瘤,占男性癌症死因的第二位,约占所有男性癌症患者的40%。近年随着人口老龄化及生活条件的改善,发病率有明显增加的趋势。前列腺癌通常生长缓慢,患者常常在发病数年之后才出现明显的症状或体征,因此及时发现并早期治疗是前列腺癌诊治的关键,然而前列腺癌的发病原因目前尚不清楚。针对国内外大量关联研究及流行病学研究表明,前列腺癌与遗传因素关系密切,现有技术中,通过基因检测能够提早诊断前列腺癌,但是这一基因检测方法主要是针对欧洲人群的检测,对于中国人,如果同样使用这一基因检测方法,则会产生较大误差。
发明内容
本发明提供一种检测前列腺癌易感性的方法及试剂盒,解决缺乏针对中国人群的前列腺癌基因检测方法的技术问题。
本发明的目的是通过以下技术方案实现的:
一种检测前列腺癌易感性的方法,包括:
提取被测者外周血的DNA;
对所述被测者外周血的DNA的8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号SNP位点进行荧光定量PCR检测,确定该位点的基因型;
对基因型进行分析;
根据基因型的分析结果,计算被检测者前列腺癌易感程度的高低以及患病概率大小。
一种检测前列腺癌易感性的试剂盒,包括检测8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号单核苷酸多态性位点的特异性引物对及特异性荧光探针对、荧光定量PCR的常规组件。
本发明提供一种检测前列腺癌易感性的方法及试剂盒,通过提取被测者外周血的DNA;对所述被测者的外周血DNA的8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号SNP位点进行荧光定量PCR检测,确定该位点的基因型;对基因型进行分析;根据基因型的分析结果,计算被检测者前列腺癌易感程度的高低以及患病概率大小。掌握了中国人群患前列腺癌的风险,提高了中国人群前列腺癌易感性的准确检测。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可根据这些附图获得其他的附图。
图1为本发明实施例提供的一种检测前列腺癌易感性的方法的流程图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合附图和具体实施方式对本发明作进一步详细的说明。
本发明实施例的应用基础主要为:运用特定的Illumina单核苷酸多态性(SNP)微阵列(iCOGS)分析,从495个前列腺癌病例以及640个对照的患者的外周血DNA中基因分型出211155个SNPs。利用meta分析的方法发现,主要存在4个8q24位点(rs1456315,rs16901979,rs6983267和rs7843031)与中国人群前列腺癌患病风险独立密切相关,而其他染色体区域似乎作用有限,并且在中国人群当中,在这4个位点上的风险等位基因出现的频率要显著高于欧洲人群。由于遗传异质性的存在,同一变异对不同群体的影响往往差异显著,本发明实施例中所选取的4个风险变异位点相比欧洲人群来说,证明更适合中国人群。基于以上的研究基础,详细介绍本发明实施例中的一种检测前列腺癌易感性的方法,如图1所示,包括:
步骤101、提取被测者外周血的DNA;
步骤102、对所述被测者的外周血DNA的8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号SNP位点进行荧光定量PCR检测,确定该位点的基因型;
步骤103、对基因型进行分析;
步骤104、根据基因型的分析结果,计算被检测者前列腺癌易感程度的高低以及患病概率大小。
其中,步骤103具体可以包括:
步骤103-1、采用Tap-Man-SNP基因分型技术对基因型进行快速鉴定;
步骤103-2、根据染色体8q24上4个位点上风险等位基因的数目分析被检测者前列腺癌易感程度。
其中,本发明实施例涉及8个单核苷酸多态性SNP,4个位点中每个位点包含2个SNP,携带6个或者更多的风险等位基因的检测者是只携带1-2个等位基因检测者前列腺癌易感程度的3倍多。
本发明提供一种检测前列腺癌易感性的方法,通过提取被测者外周血的DNA;对所述被测者外周血的DNA的8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号SNP位点进行荧光定量PCR检测,确定该位点的基因型;对基因型进行分析;根据基因型的分析结果,计算被检测者前列腺癌易感程度的高低以及患病概率大小。掌握了中国人群患前列腺癌的风险,提高了中国人群前列腺癌易感性的准确检测。
本发明实施例还提供了一种检测前列腺癌易感性的试剂盒,包括检测8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号单核苷酸多态性位点的特异性引物对及特异性荧光探针对、荧光定量PCR的常规组件。
其中,所述荧光定量PCR的常规组件包括:Taq DNA聚合酶、dNTP混合液、MgCl2溶液、荧光定量PCR反应缓冲液和去离子水。
其中,该试剂盒实际应用中,包括包装盒体、衬垫、装有检测四个SNP位点的荧光定量PCR反应液的四个试管、装有阳性对照品的一个试管、装有阴性对照品的一个试管组成,衬垫上设有容器孔,分别放置四管荧光定量PCR反应液、阳性对照品和阴性对照品。
本发明实施例依据染色体8q24区域上的这4个位点,开发出一种检测前列腺癌易感性的试剂盒,该试剂盒涉及8个SNP(每个位点包含2个SNP),采用Tap-Man-SNP基因分型技术对其快速鉴定,根据患者携带染色体8q24区域中4个位点上风险等位基因的数目筛查前列腺癌遗传易感人群,以便尽早对其进行癌症预防措施,延缓甚至避免中国高危人群罹患前列腺癌。
以上对本发明进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (1)

1.一种检测前列腺癌易感性的试剂盒,其特征在于,检测8q24染色体上的rs1456315,rs16901979,rs6983267和rs7843031号单核苷酸多态性位点的特异性引物对及特异性荧光探针对、荧光定量PCR的常规组件,所述荧光定量PCR的常规组件包括:TaqDNA聚合酶、dNTP混合液、MgCl2溶液、荧光定量PCR反应缓冲液和去离子水。
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