Eur J Cancer.:尿液外泌体中的脂质可作为前列腺癌标志物

2016-12-27 外泌体之家 外泌体之家

目前,外泌体被认为可以作为非侵入性的癌生物标志物,这是因为这些纳米级囊泡中含有来自癌细胞的分子并且可以在各种生物流体中检测得到。近日,澳大利亚拉筹伯大学(La Trobe University)的研究人员在Eur J Cancer杂志(IF=6.163)上发表文章,研究了脂质在尿液外泌体中作为前列腺癌生物标志物的潜在用途。实验方法:通过高通量质谱定量脂质组学分析,来揭示前列腺癌患者和健康对照人群中


目前,外泌体被认为可以作为非侵入性的癌生物标志物,这是因为这些纳米级囊泡中含有来自癌细胞的分子并且可以在各种生物流体中检测得到。近日,澳大利亚拉筹伯大学(La Trobe University)的研究人员在Eur J Cancer杂志(IF=6.163)上发表文章,研究了脂质在尿液外泌体中作为前列腺癌生物标志物的潜在用途。

实验方法:
通过高通量质谱定量脂质组学分析,来揭示前列腺癌患者和健康对照人群中的尿液外泌体的脂质组成。

实验结果:
首先研究人员对对照样品进行分析以表征尿液外泌体的脂质成分并测试该方法的可重复性。结果总计在尿液外泌体中定量了107种脂质(下图1)。在尿液外泌体和来自细胞系的外泌体之间发现了几种脂质存在差异,例如胆固醇和磷脂酰胆碱,因此结果表明用于生物标志物分析的体内研究的重要性。然后研究人员在15个前列腺癌患者和13个健康对照组志愿者中定量了尿液外泌体中36种最丰富的脂质种类。有趣的是,当比较这两组时,发现9种脂质的水平有显著差异(下图2)。磷脂酰丝氨酸(phosphatidylserine,PS,18:1/18:1)和乳糖基神经酰胺(lactosylceramide,d18:1/16:0)表现出最高的显着性,后者同时也是在病人和正常组的比例差异最高的脂质。此外,这些脂质和PS 18:0-18:2的组合区分成具有93%灵敏度和100%特异性的两个组。最后,与已报道过的神经脂质代谢在癌细胞中的失调的结果一致,研究人员也观察到特定鞘脂脂质类别的改变。


图1:尿液外泌体的脂质成分


图2:前列腺癌病人(P)和正常对照组(C)尿液外泌体脂质成分的差异

结论:

这项研究第一次发现外泌体脂质在尿液中作为前列腺癌生物标志物的潜在用途。

原始出处:

Skotland T, Ekroos K, Kauhanen D, Simolin H, Seierstad T, Berge V, Sandvig K, Llorente A. Molecular lipid species in urinary exosomes as potential prostate cancer biomarkers. Eur J Cancer. 2016 Nov 30.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1840950, encodeId=23521840950bd, 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=37, 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 Sep 30 08:16:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167952, encodeId=6ae716e9520e, content=有这个研究课题很好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160817/IMG57B3C3F6DC2FD8753.jpg, createdBy=81321934679, createdName=1e0d99ddm02(暂无匿称), createdTime=Wed Jan 04 19:16:45 CST 2017, time=2017-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167920, encodeId=a8ba16e92036, content=文章真好,己拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Wed Jan 04 13:31:29 CST 2017, time=2017-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167716, encodeId=de5516e71641, content=学习了~~分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eeef1960262, createdName=杨柳青青, createdTime=Tue Jan 03 17:57:41 CST 2017, time=2017-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=166758, encodeId=7e5f166e58cc, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Fri Dec 30 08:27:14 CST 2016, time=2016-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1449324, encodeId=ca911449324b1, content=<a href='/topic/show?id=b3e24e442bc' target=_blank style='color:#2F92EE;'>#尿液#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=47442, encryptionId=b3e24e442bc, topicName=尿液)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=66095470791, createdName=zhaohui6733, createdTime=Thu Dec 29 07:16:00 CST 2016, time=2016-12-29, status=1, ipAttribution=)]
    2017-01-04 1e0d99ddm02(暂无匿称)

    有这个研究课题很好!

    0

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    2017-01-04 虈亣靌

    文章真好,己拜读

    0

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    2017-01-03 杨柳青青

    学习了~~分享

    0

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    2016-12-30 一个字-牛

    了解

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1840950, encodeId=23521840950bd, 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=37, 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 Sep 30 08:16:00 CST 2017, time=2017-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167952, encodeId=6ae716e9520e, content=有这个研究课题很好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160817/IMG57B3C3F6DC2FD8753.jpg, createdBy=81321934679, createdName=1e0d99ddm02(暂无匿称), createdTime=Wed Jan 04 19:16:45 CST 2017, time=2017-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167920, encodeId=a8ba16e92036, content=文章真好,己拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Wed Jan 04 13:31:29 CST 2017, time=2017-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=167716, encodeId=de5516e71641, content=学习了~~分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eeef1960262, createdName=杨柳青青, createdTime=Tue Jan 03 17:57:41 CST 2017, time=2017-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=166758, encodeId=7e5f166e58cc, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Fri Dec 30 08:27:14 CST 2016, time=2016-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1449324, encodeId=ca911449324b1, content=<a href='/topic/show?id=b3e24e442bc' target=_blank style='color:#2F92EE;'>#尿液#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=47442, encryptionId=b3e24e442bc, topicName=尿液)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=66095470791, createdName=zhaohui6733, createdTime=Thu Dec 29 07:16:00 CST 2016, time=2016-12-29, status=1, ipAttribution=)]