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Genome Med:首次!女性致死率更高癌症可用DNA甲基化标志物特异性诊断!

2017-12-27 Ruhty,Juka 转化医学网

近日,伦敦大学(UCL)的研究人员在《Genome Medicine》上发表了一篇题为《Methylation Patterns in Serum DNA for Early Identification of Disseminated Breast Cancer.》的文章,文章指出,UCL团队发现了一个新的DNA标记区域,名为EFC#93,这是一个血清DNA甲基化标记物,可用来诊断致命性乳腺癌,

近日,伦敦大学(UCL)的研究人员在《Genome Medicine》上发表了一篇题为《Methylation Patterns in Serum DNA for Early Identification of Disseminated Breast Cancer.》的文章,文章指出,UCL团队发现了一个新的DNA标记区域,名为EFC#93,这是一个血清DNA甲基化标记物,可用来诊断致命性乳腺癌,而且能比现有的诊断方法提早一年找到癌变。最重要的是,虽然这些标记在血液中游离,研究者们却可以在乳房中检测到癌变信息。

本研究负责人,UCL女性肿瘤系教授兼主任Martin Widschwendter博士解释说:“我们研究发现的血清DNA甲基化标记物—EFC#93具有高度特异性,可以比现有的诊断方法提早一年找到癌变,甚至在缺乏放射线检查结果时也可以进行诊断,这就使乳腺癌的个体化治疗成为可能。”

研究小组首先分析了419名乳腺癌患者在手术后(化疗开始前)和化疗完成后两个时间点的血清EFC#93 的DNA甲基化水平。此前伦敦大学的科学家已经证明,化疗前的异常DNA甲基化是不良预后的标志,与循环肿瘤细胞的存在无关。

为了评估EFC#93是否可以早期诊断乳腺癌的预后,作者进一步分析了925例UKCTOCS队列(英国的一项多中心随机对照研究)中女性的血清样本,其中229例乳腺癌继续发展最终致命,231例在检测的头三年内发展成非致死性乳腺癌。

“在乳腺癌乳腺癌诊断前六个月测试的血清中,血清DNA甲基化标记物EFC#93的检测结果准确指出有43%的女性可能发展为致命性乳腺癌,该检测方法的特异性为88%,”Widschwendter博士指出,“EFC#93对非致死性乳腺癌敏感性不高。相比之下,乳房X光筛查的特异性为88%到92%,这些结果中有部分肿瘤并不会引起任何临床症状,这会导致非常严重的过度诊断。而使用无细胞的DNA作为标记的诊断方法,虽然有待进一步研究,但却不失为解决这个问题的有效手段。”

UCL团队对他们的研究成果持乐观态度,同时强调获得适当的血清样本是这类研究的一个关键限制因素。在采血后未立即处理或未收集在特殊管中的血样中,白细胞会裂解出大量正常的DNA,最终导致难以检测到微量的肿瘤DNA。

Widschwendter博士评论说:“在这些样本中,正常DNA片段通常比肿瘤DNA的短片段发出更强的信号。但是,尽管我们的基于人群的样本被大量的DNA污染,我们依旧观察到清楚的肿瘤DNA信号。”

据作者说,现在需要进行临床试验来评估EFC#93阳性的乳腺癌患者是否可以通过乳房X线成像术检测到癌症,从而实现在乳腺癌变得可见之前令患者从抗激素治疗中获益。Widschwendter博士的研究小组目前正在准备一个大规模,基于人群的无细胞DNA研究计划,这也将有助于解决这个问题。

原始出处:

Widschwendter M,et al.,Methylation patterns in serum DNA for early identification of disseminated breast cancer.Genome Med. 2017 Dec 22;9(1):115.

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  5. [GetPortalCommentsPageByObjectIdResponse(id=1941784, encodeId=960f1941e8423, content=<a href='/topic/show?id=aaa686456e2' target=_blank style='color:#2F92EE;'>#致死率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86456, encryptionId=aaa686456e2, topicName=致死率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0ad8182, createdName=axin009, createdTime=Fri Dec 07 15:34:00 CST 2018, time=2018-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1841165, encodeId=cb4b184116565, content=<a href='/topic/show?id=18bf61953d3' target=_blank style='color:#2F92EE;'>#标志物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61953, encryptionId=18bf61953d3, topicName=标志物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Sat Feb 17 06:34:00 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899183, encodeId=368c1899183a4, content=<a href='/topic/show?id=6f746e94170' target=_blank style='color:#2F92EE;'>#特异性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67941, encryptionId=6f746e94170, topicName=特异性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dc7a157, createdName=jinweidong, createdTime=Sat Feb 24 21:34:00 CST 2018, time=2018-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608387, encodeId=1378160838e32, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Fri Dec 29 11:34:00 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273400, encodeId=9e962e34007f, content=学习了谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Fri Dec 29 06:36:10 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273068, encodeId=9ccc2e3068a6, content=不错的文章.值得推荐, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04f22055142, createdName=131****2916, createdTime=Wed Dec 27 22:55:35 CST 2017, time=2017-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273032, encodeId=05132e3032d1, content=不错的文章.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Wed Dec 27 21:40:32 CST 2017, time=2017-12-27, status=1, ipAttribution=)]
    2017-12-29 1e145228m78(暂无匿称)

    学习了谢谢作者分享!

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1941784, encodeId=960f1941e8423, content=<a href='/topic/show?id=aaa686456e2' target=_blank style='color:#2F92EE;'>#致死率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86456, encryptionId=aaa686456e2, topicName=致死率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0ad8182, createdName=axin009, createdTime=Fri Dec 07 15:34:00 CST 2018, time=2018-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1841165, encodeId=cb4b184116565, content=<a href='/topic/show?id=18bf61953d3' target=_blank style='color:#2F92EE;'>#标志物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61953, encryptionId=18bf61953d3, topicName=标志物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Sat Feb 17 06:34:00 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899183, encodeId=368c1899183a4, content=<a href='/topic/show?id=6f746e94170' target=_blank style='color:#2F92EE;'>#特异性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67941, encryptionId=6f746e94170, topicName=特异性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dc7a157, createdName=jinweidong, createdTime=Sat Feb 24 21:34:00 CST 2018, time=2018-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608387, encodeId=1378160838e32, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Fri Dec 29 11:34:00 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273400, encodeId=9e962e34007f, content=学习了谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Fri Dec 29 06:36:10 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273068, encodeId=9ccc2e3068a6, content=不错的文章.值得推荐, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04f22055142, createdName=131****2916, createdTime=Wed Dec 27 22:55:35 CST 2017, time=2017-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273032, encodeId=05132e3032d1, content=不错的文章.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Wed Dec 27 21:40:32 CST 2017, time=2017-12-27, status=1, ipAttribution=)]
    2017-12-27 131****2916

    不错的文章.值得推荐

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1941784, encodeId=960f1941e8423, content=<a href='/topic/show?id=aaa686456e2' target=_blank style='color:#2F92EE;'>#致死率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86456, encryptionId=aaa686456e2, topicName=致死率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0ad8182, createdName=axin009, createdTime=Fri Dec 07 15:34:00 CST 2018, time=2018-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1841165, encodeId=cb4b184116565, content=<a href='/topic/show?id=18bf61953d3' target=_blank style='color:#2F92EE;'>#标志物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61953, encryptionId=18bf61953d3, topicName=标志物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6ab940, createdName=hukaixun, createdTime=Sat Feb 17 06:34:00 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899183, encodeId=368c1899183a4, content=<a href='/topic/show?id=6f746e94170' target=_blank style='color:#2F92EE;'>#特异性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67941, encryptionId=6f746e94170, topicName=特异性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dc7a157, createdName=jinweidong, createdTime=Sat Feb 24 21:34:00 CST 2018, time=2018-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608387, encodeId=1378160838e32, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Fri Dec 29 11:34:00 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273400, encodeId=9e962e34007f, content=学习了谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Fri Dec 29 06:36:10 CST 2017, time=2017-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273068, encodeId=9ccc2e3068a6, content=不错的文章.值得推荐, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=04f22055142, createdName=131****2916, createdTime=Wed Dec 27 22:55:35 CST 2017, time=2017-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=273032, encodeId=05132e3032d1, content=不错的文章.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Wed Dec 27 21:40:32 CST 2017, time=2017-12-27, status=1, ipAttribution=)]
    2017-12-27 1e1b8538m79(暂无匿称)

    不错的文章.值得拥有

    0

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