Clin Chem:合成循环游离DNA作为癌症液体活检的体细胞突变检测的质控材料

2017-08-29 MedSci MedSci原创

研究人员开发了一套合成cfDNA质控材料(SCQCM),在微球菌核酸酶消化系统的基础上,其携带体细胞突变作为模拟cfDNA并且能够与基因组DNA匹配作为遗传背景,以模拟真实临床中的配对肿瘤标准样品试验。使用来自CRISPR / Cas9编辑的具有EML4-ALK重排的细胞的单核苷酸变体或indel和基因组DNA含有1500-2000个碱基的定点诱变被片段化,定量并加入到衍生自HEK293T细胞的微

近日,国际杂志 《Clinical Chemistry》上在线发表一项关于合成循环游离DNA作为癌症液体活检的体细胞突变检测的质控材料的研究。

由于cfDNA浓度低、检测方法多变、工作流程复杂,在血浆中检测肿瘤衍生细胞游离DNA(cfDNA)的体细胞基因组改变仍然具有很大困难。此外,目前还没有合适的质控材料。

研究人员开发了一套合成cfDNA质控材料(SCQCM),在微球菌核酸酶消化系统的基础上,其携带体细胞突变作为模拟cfDNA并且能够与基因组DNA匹配作为遗传背景,以模拟真实临床中的配对肿瘤标准样品试验。使用来自CRISPR / Cas9编辑的具有EML4-ALK重排的细胞的单核苷酸变体或indel和基因组DNA含有1500-2000个碱基的定点诱变被片段化,定量并加入到衍生自HEK293T细胞的微球菌核酸酶消化DNA中。为了证明其适用性,将SCQCM与患者衍生的血浆样品进行比较,并在包含11个实验室的合作研究中进行了验证。

下一代测序的SCQCM分析结果与患者血浆样品的结果一致,包括cfDNA的大小分布和测序数据的质量控制指标。超过95%的实验室正确检测到EGFR T790ML858RKRAS G12D和外显子19以及EML4-ALK变体2中的缺失的SCQCM

研究认为,SCQCMs可成功应用于更为广泛的环境,此外,SCQCM可以用作循环肿瘤DNA体细胞突变检测的测试性能评估中的最佳质控材料。

原始出处:

Rui Zhang, Rongxue Peng, Ziyang Li,et al. Synthetic Circulating Cell-free DNA as Quality Control Materials for Somatic Mutation Detection in Liquid Biopsy for Cancer

本文系梅斯医学(MedSci)原创编译整理,转载需授权!


版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1722248, encodeId=4f261e22248be, content=<a href='/topic/show?id=836b50442c9' target=_blank style='color:#2F92EE;'>#循环游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50442, encryptionId=836b50442c9, topicName=循环游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=859433239718, createdName=shock_melon, createdTime=Sun Mar 25 21:43:00 CST 2018, time=2018-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1946348, encodeId=878e194634836, content=<a href='/topic/show?id=634e2664446' target=_blank style='color:#2F92EE;'>#体细胞突变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26644, encryptionId=634e2664446, topicName=体细胞突变)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Nov 26 02:43:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1278033, encodeId=0f3012e8033b1, content=<a href='/topic/show?id=d34e6523544' target=_blank style='color:#2F92EE;'>#活检#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65235, encryptionId=d34e6523544, topicName=活检)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1438305, encodeId=7c2d1438305d5, content=<a href='/topic/show?id=c8a526638f6' target=_blank style='color:#2F92EE;'>#体细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26638, encryptionId=c8a526638f6, topicName=体细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1573565, encodeId=9c2a15e3565d3, content=<a href='/topic/show?id=ad6066363fb' target=_blank style='color:#2F92EE;'>#游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66363, encryptionId=ad6066363fb, topicName=游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d04c15907611, createdName=LSJ116, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1722248, encodeId=4f261e22248be, content=<a href='/topic/show?id=836b50442c9' target=_blank style='color:#2F92EE;'>#循环游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50442, encryptionId=836b50442c9, topicName=循环游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=859433239718, createdName=shock_melon, createdTime=Sun Mar 25 21:43:00 CST 2018, time=2018-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1946348, encodeId=878e194634836, content=<a href='/topic/show?id=634e2664446' target=_blank style='color:#2F92EE;'>#体细胞突变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26644, encryptionId=634e2664446, topicName=体细胞突变)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Nov 26 02:43:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1278033, encodeId=0f3012e8033b1, content=<a href='/topic/show?id=d34e6523544' target=_blank style='color:#2F92EE;'>#活检#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65235, encryptionId=d34e6523544, topicName=活检)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1438305, encodeId=7c2d1438305d5, content=<a href='/topic/show?id=c8a526638f6' target=_blank style='color:#2F92EE;'>#体细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26638, encryptionId=c8a526638f6, topicName=体细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1573565, encodeId=9c2a15e3565d3, content=<a href='/topic/show?id=ad6066363fb' target=_blank style='color:#2F92EE;'>#游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66363, encryptionId=ad6066363fb, topicName=游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d04c15907611, createdName=LSJ116, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1722248, encodeId=4f261e22248be, content=<a href='/topic/show?id=836b50442c9' target=_blank style='color:#2F92EE;'>#循环游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50442, encryptionId=836b50442c9, topicName=循环游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=859433239718, createdName=shock_melon, createdTime=Sun Mar 25 21:43:00 CST 2018, time=2018-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1946348, encodeId=878e194634836, content=<a href='/topic/show?id=634e2664446' target=_blank style='color:#2F92EE;'>#体细胞突变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26644, encryptionId=634e2664446, topicName=体细胞突变)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Nov 26 02:43:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1278033, encodeId=0f3012e8033b1, content=<a href='/topic/show?id=d34e6523544' target=_blank style='color:#2F92EE;'>#活检#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65235, encryptionId=d34e6523544, topicName=活检)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1438305, encodeId=7c2d1438305d5, content=<a href='/topic/show?id=c8a526638f6' target=_blank style='color:#2F92EE;'>#体细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26638, encryptionId=c8a526638f6, topicName=体细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1573565, encodeId=9c2a15e3565d3, content=<a href='/topic/show?id=ad6066363fb' target=_blank style='color:#2F92EE;'>#游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66363, encryptionId=ad6066363fb, topicName=游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d04c15907611, createdName=LSJ116, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=)]
    2017-08-31 smlt2008
  4. [GetPortalCommentsPageByObjectIdResponse(id=1722248, encodeId=4f261e22248be, content=<a href='/topic/show?id=836b50442c9' target=_blank style='color:#2F92EE;'>#循环游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50442, encryptionId=836b50442c9, topicName=循环游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=859433239718, createdName=shock_melon, createdTime=Sun Mar 25 21:43:00 CST 2018, time=2018-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1946348, encodeId=878e194634836, content=<a href='/topic/show?id=634e2664446' target=_blank style='color:#2F92EE;'>#体细胞突变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26644, encryptionId=634e2664446, topicName=体细胞突变)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Nov 26 02:43:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1278033, encodeId=0f3012e8033b1, content=<a href='/topic/show?id=d34e6523544' target=_blank style='color:#2F92EE;'>#活检#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65235, encryptionId=d34e6523544, topicName=活检)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1438305, encodeId=7c2d1438305d5, content=<a href='/topic/show?id=c8a526638f6' target=_blank style='color:#2F92EE;'>#体细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26638, encryptionId=c8a526638f6, topicName=体细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1573565, encodeId=9c2a15e3565d3, content=<a href='/topic/show?id=ad6066363fb' target=_blank style='color:#2F92EE;'>#游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66363, encryptionId=ad6066363fb, topicName=游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d04c15907611, createdName=LSJ116, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1722248, encodeId=4f261e22248be, content=<a href='/topic/show?id=836b50442c9' target=_blank style='color:#2F92EE;'>#循环游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50442, encryptionId=836b50442c9, topicName=循环游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=859433239718, createdName=shock_melon, createdTime=Sun Mar 25 21:43:00 CST 2018, time=2018-03-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1946348, encodeId=878e194634836, content=<a href='/topic/show?id=634e2664446' target=_blank style='color:#2F92EE;'>#体细胞突变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26644, encryptionId=634e2664446, topicName=体细胞突变)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Nov 26 02:43:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1278033, encodeId=0f3012e8033b1, content=<a href='/topic/show?id=d34e6523544' target=_blank style='color:#2F92EE;'>#活检#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65235, encryptionId=d34e6523544, topicName=活检)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c39f145, createdName=smlt2008, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1438305, encodeId=7c2d1438305d5, content=<a href='/topic/show?id=c8a526638f6' target=_blank style='color:#2F92EE;'>#体细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=26638, encryptionId=c8a526638f6, topicName=体细胞)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1573565, encodeId=9c2a15e3565d3, content=<a href='/topic/show?id=ad6066363fb' target=_blank style='color:#2F92EE;'>#游离DNA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66363, encryptionId=ad6066363fb, topicName=游离DNA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d04c15907611, createdName=LSJ116, createdTime=Thu Aug 31 10:43:00 CST 2017, time=2017-08-31, status=1, ipAttribution=)]
    2017-08-31 LSJ116

相关资讯

CLIN CHEM:实体器官移植后采用无探针数字PCR定量方法检测供体特异性游离DNA

供体特异性游离DNA(dscfDNA)越来越被认为是一种用于监测移植健康和诊断实体器官移植后排斥反应的非侵入性生物标志。然而,当前用于测量dscfDNA的方法既昂贵又费力。使用小的缺失或插入多态性(DIP)的无探针数字PCR(ddPCR)方法可以在不影响对dscfDNA的定量的同时克服这些局限。该方法被称为PHABRE-PCR(Primer to Hybridize across an Allel