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CLIN CHEM:开发用于检测人类血清中疾病特异性外泌体数量的高灵敏度装置

2018-10-29 MedSci MedSci原创

虽然血液中的循环外泌体在癌症发生和进展中起着至关重要的作用,但是对外泌体进行量化的困难阻碍了其在临床试验中可靠的应用。通过将纳米珠的特性与光技术相结合,研究人员开发了一种名为ExoCounter的新型装置,用于鉴定各种类型癌症患者血清中外泌体的确切数量。 该系统将单个外泌体捕获在涂有针对外来体表面抗原的抗体的光盘的凹槽中。用抗体偶联的磁性纳米珠标记捕获的外泌体,并用光盘驱动器计数标记的外泌体

虽然血液中的循环外泌体在癌症发生和进展中起着至关重要的作用,但是对外泌体进行量化的困难阻碍了其在临床试验中可靠的应用。通过将纳米珠的特性与光技术相结合,研究人员开发了一种名为ExoCounter的新型装置,用于鉴定各种类型癌症患者血清中外泌体的确切数量。

该系统将单个外泌体捕获在涂有针对外来体表面抗原的抗体的光盘的凹槽中。用抗体偶联的磁性纳米珠标记捕获的外泌体,并用光盘驱动器计数标记的外泌体的数目。

研究人员发现ExoCounter可以检测来自细胞或人血清的特定外泌体,无需任何富集程序。该系统的检测灵敏度和线性度均高于常规检测方法,如ELISA或流式细胞仪。除了普遍存在的外来体标志物CD9CD63之外,癌症相关抗原CD147,癌胚抗原和人表皮生长因子受体2HER2)也用于定量癌细胞系衍生的外泌体。此外,对血清样品的横截面队列的分析显示,与健康个体和患有非癌症疾病的患者相比,乳腺癌卵巢癌患者中HER2阳性外泌体显著增加。

研究表明ExoCounter系统在直接检测细胞培养和人血清中的外泌体方面表现出较高性能。该方法可以实现对液体活组织检查的可靠分析。

原始出处:

Yasuaki Kabe, Makoto Suematsu, Satoshi Sakamoto,Development of a Highly Sensitive Device for Counting the Number of Disease-Specific Exosomes in Human Sera

本文系梅斯医学(MedSci)原创编译整理,转载需授权!


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    2019-09-04 respect
  2. [GetPortalCommentsPageByObjectIdResponse(id=1775930, encodeId=e82d1e75930e8, content=<a href='/topic/show?id=ede06694367' target=_blank style='color:#2F92EE;'>#灵敏度#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66943, encryptionId=ede06694367, topicName=灵敏度)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fd6838842412, createdName=respect, createdTime=Wed Sep 04 12:24:00 CST 2019, time=2019-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899247, encodeId=ff70189924e56, 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=67, 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=Mon Jul 22 20:24:00 CST 2019, time=2019-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=350906, encodeId=ece13509068a, content=好好好好好好好好, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/08/29/bbc5cc0eed9b8d17623d2fd49dbdf19a.jpg, createdBy=79522135794, createdName=yjs木玉, createdTime=Tue Oct 30 05:52:12 CST 2018, time=2018-10-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=350891, encodeId=a65435089164, content=了解一下,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Mon Oct 29 22:51:50 CST 2018, time=2018-10-29, status=1, ipAttribution=)]
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    2018-10-30 yjs木玉

    好好好好好好好好

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1775930, encodeId=e82d1e75930e8, content=<a href='/topic/show?id=ede06694367' target=_blank style='color:#2F92EE;'>#灵敏度#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66943, encryptionId=ede06694367, topicName=灵敏度)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fd6838842412, createdName=respect, createdTime=Wed Sep 04 12:24:00 CST 2019, time=2019-09-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899247, encodeId=ff70189924e56, 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=67, 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=Mon Jul 22 20:24:00 CST 2019, time=2019-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=350906, encodeId=ece13509068a, content=好好好好好好好好, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/08/29/bbc5cc0eed9b8d17623d2fd49dbdf19a.jpg, createdBy=79522135794, createdName=yjs木玉, createdTime=Tue Oct 30 05:52:12 CST 2018, time=2018-10-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=350891, encodeId=a65435089164, content=了解一下,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Mon Oct 29 22:51:50 CST 2018, time=2018-10-29, status=1, ipAttribution=)]
    2018-10-29 天地飞扬

    了解一下,谢谢分享!

    0

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