Oncogene:上皮性卵巢癌腹腔转移机制

2017-06-28 海北 MedSci原创

在上皮性卵巢癌的进展过程中,腹水中存在腹腔内散播的癌细胞和多细胞聚集体,它们粘附在腹膜上,诱导腹膜间皮回缩,而后侵入富含胶原蛋白的间皮基质,进行细胞增殖,成为转移瘤。已有的临床研究表明,上皮性卵巢癌的转移单位在钙黏蛋白表达谱以及侵袭性上有着异质性。但是,对于不同的钙黏蛋白对转移性病变的腹膜锚定的影响,我们依然知之甚少。

在上皮性卵巢癌的进展过程中,腹水中存在腹腔内散播的癌细胞和多细胞聚集体,它们粘附在腹膜上,诱导腹膜间皮回缩,而后侵入富含胶原蛋白的间皮基质,进行细胞增殖,成为转移瘤。已有的临床研究表明,上皮性卵巢癌的转移单位在钙黏蛋白表达谱以及侵袭性上有着异质性。但是,对于不同的钙黏蛋白对转移性病变的腹膜锚定的影响,我们依然知之甚少。

近日,研究人员发现,卵巢癌细胞和多细胞聚集体的转移行为会受细胞钙黏蛋白的影响。N-cadherin表达(Ncad +)的间充质细胞和多细胞聚集体的侵袭性要高于E-cadherin表达(Ecad +)的细胞。在穿透三维胶原基质之前,Ncad +的多细胞聚集体就具有快速横向扩散的能力。当以单细胞形式培养时,侧向迁移和细胞间连接也会在基质侵入之前完成。利用单克隆抗体中和Ncad的胞外结构域可以抑制细胞的横向迁移以及对胶原凝胶的穿透。

相反,如果使用广谱基质金属蛋白酶(MMP)抑制剂来阻断内源膜I型基质金属蛋白酶,细胞侵袭并不会被完全抑制。在完整的组织外植体中,Ncad+的多细胞聚集体还是可以有效破裂腹膜间皮细胞,暴露胶原基质。如果Ecad+细胞获得Ncad,会增加其间皮清理活性,但是不足以引起基质侵袭。此外,将Ncad +与Ecad +细胞共培养不会引起“引导者-跟随者”的细胞侵袭模式。这说明在没有Ncad的情况下,基质重塑和侵入性微轨迹的创建不足以帮助细胞进行胶原基质的穿透。

因此,该研究表明了Ncad在表皮卵巢癌腹膜内传播的作用,Ncad可能成为未来的临床前研究靶点。

原始出处:

Y Klymenko et al. Cadherin composition and multicellular aggregate invasion in organotypic models of epithelial ovarian cancer intraperitoneal metastasis. Oncogene (2017), 1–12. DOI: 10.1038/onc.2017.171.

本文系梅斯医学(MedSci)原创编译整理,转载需授权

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    2018-03-13 cy0324
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    2017-07-06 日月生辉

    发现转移新机制,临床就多一种治疗手段!

    0

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    2017-06-30 zsyan
  6. [GetPortalCommentsPageByObjectIdResponse(id=1800199, encodeId=7f0e1800199f9, content=<a href='/topic/show?id=ef85e196488' target=_blank style='color:#2F92EE;'>#皮性卵巢癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71964, encryptionId=ef85e196488, topicName=皮性卵巢癌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/E33DC517C2EC449E463E3D01D81745BA/100, createdBy=75e12500157, createdName=ms1756883563247400, createdTime=Tue Nov 21 12:34:00 CST 2017, time=2017-11-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2048870, encodeId=675a20488e016, content=<a href='/topic/show?id=4363e929ad' target=_blank style='color:#2F92EE;'>#Gene#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7929, encryptionId=4363e929ad, topicName=Gene)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=63a4277, createdName=cy0324, createdTime=Tue Mar 13 14:34:00 CST 2018, time=2018-03-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1653744, encodeId=a04f1653e44c9, content=<a href='/topic/show?id=f26f20021f8' target=_blank style='color:#2F92EE;'>#上皮性卵巢癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20021, encryptionId=f26f20021f8, topicName=上皮性卵巢癌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8abd24353137, createdName=hywen7334, createdTime=Wed Feb 07 15:34:00 CST 2018, time=2018-02-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=219039, encodeId=ead221903917, content=发现转移新机制,临床就多一种治疗手段!, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib260FNcic8ThYQJjaU2fLIb1yNqibkbdJs7gVIDr9xJyYeiapArSMjn3W61bPJtpIazSdAxRaFEOKYgfQjX4achN2d/0, createdBy=68472058812, createdName=日月生辉, createdTime=Thu Jul 06 07:23:45 CST 2017, time=2017-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1558077, encodeId=b65a15580e7fb, content=<a href='/topic/show?id=2f1c13349e7' target=_blank style='color:#2F92EE;'>#Oncogene#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13349, encryptionId=2f1c13349e7, topicName=Oncogene)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=154614942533, createdName=zsyan, createdTime=Fri Jun 30 06:34:00 CST 2017, time=2017-06-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=216824, encodeId=0fd0216824b5, content=好东西学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=92191944782, createdName=thlabcde, createdTime=Thu Jun 29 21:40:23 CST 2017, time=2017-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=216582, encodeId=55d42165820a, content=转移是永恒的话题, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NebL6HUuazlWRDicKU30ib7MWct2QQNWiao1ntOx2x5WUHGVw7R8NBdVuXbznuDsHKg3ImrnRyHGr8WSmKTnycicXEf/0, createdBy=bcd81373695, createdName=dpbl_zlh, createdTime=Thu Jun 29 07:54:09 CST 2017, time=2017-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=216477, encodeId=24492164e704, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=550d2008262, createdName=luominglian113, createdTime=Thu Jun 29 00:07:21 CST 2017, time=2017-06-29, status=1, ipAttribution=)]
    2017-06-29 thlabcde

    好东西学习了!

    0

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    2017-06-29 dpbl_zlh

    转移是永恒的话题

    0

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    2017-06-29 luominglian113

    学习了,谢谢分享

    0

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