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Science:炎症诱导癌症复发?唤醒休眠癌细胞的信号

2018-09-29 佚名 生物探索

抗癌常被比作打地鼠游戏,因为即使癌症治疗成功,原发肿瘤中休眠和未分裂的癌细胞仍可能存在于身体其他地方。一旦被唤醒,这些细胞会增殖并生长成转移性肿瘤。冷泉港实验室的科学家们近日识别出一种伴随炎症的、可以唤醒休眠癌细胞的信号。这一新认知激发了一种旨在预防癌症复发和转移的新治疗理念。

抗癌常被比作打地鼠游戏,因为即使癌症治疗成功,原发肿瘤中休眠和未分裂的癌细胞仍可能存在于身体其他地方。一旦被唤醒,这些细胞会增殖并生长成转移性肿瘤。冷泉港实验室的科学家们近日识别出一种伴随炎症的、可以唤醒休眠癌细胞的信号。这一新认知激发了一种旨在预防癌症复发和转移的新治疗理念。

9月28日,这一最新研究以“How dormant cancer persists and reawakens”为题发表在《Science》杂志。

炎症是否会直接导致癌症复发,如果会,如何导致?这些目前尚不清楚。在冷泉港实验室(CSHL)的科学家们的新研究中,作者证明,持续的肺部炎症,包括暴露在烟草烟雾中引起的炎症,可以导致潜伏的乳腺癌和前列腺癌细胞苏醒并开始分裂。这些细胞继而在肺部形成转移。而转移癌正是大多数常见癌症致死的主要原因。

好消息是,由CSHL副教授Mikala Egeblad领导的团队,包括Dana Farber癌症研究所和UC Davis的研究人员,展示了一种阻断唤醒休眠癌细胞的信号的方法,这种概念可以防止癌症复发或降低复发频率。

Egeblad的研究小组显示,持续的肺部炎症,无论是由于小鼠暴露在烟草烟雾中还是细菌内毒素中,都会以一种非同寻常的方式诱导普通白细胞(即中性粒细胞)唤醒附近休眠的癌细胞。

嗜中性粒细胞,我们通常依靠它来杀死入侵者,如细菌和酵母。其中一种杀死入侵者的方法是将它们的DNA排出细胞膜之外,被排出的DNA形成了一个薄纱状的网状陷阱(NETs),可以杀死病原体。

新的研究表明,持续的肺部炎症导致休眠癌细胞周围区域形成网状结构。该结构中两种称为NE (中性粒细胞弹性蛋白酶)和MMP 9 (基质金属蛋白酶9 ),与组织中的一种叫做层粘连蛋白(laminin)相互作用。NE和MMP9依次先后切割层粘连蛋白。这改变了蛋白质的形状,暴露出一个叫做表位(epitope)的新表面(exposing a new surface)。

当这一表位被附近休眠的癌细胞识别时,会刺激唤醒癌细胞的信号。“休眠癌细胞认识到层粘连蛋白的新形状,并‘通知’癌细胞开始重新生长。”Egeblad说。

接下来,该小组创造了一种抗体来阻断层粘连蛋白上暴露的表位。在小鼠身上,这防止了附近休眠癌细胞的再次苏醒。

目前,研究人员已经开始优化抗体,并将其与其他NETs方法进行比较,希望最终能在人体中进行试验。

参考文献:

Julio A. Aguirre-Ghiso.How dormant cancer persists and reawakens.Science  28 Sep 2018.

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    2019-02-02 yese
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    2018-10-01 yxch36
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    2018-10-01 jichang
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1668064, encodeId=d490166806460, content=<a href='/topic/show?id=902125e1351' target=_blank style='color:#2F92EE;'>#休眠#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=25713, encryptionId=902125e1351, topicName=休眠)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=34e226239625, createdName=yese, createdTime=Sat Feb 02 15:03:00 CST 2019, time=2019-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252543, encodeId=798912525430a, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375869, encodeId=5cc113e586958, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1425302, encodeId=003914253027f, content=<a href='/topic/show?id=7eb6e134273' target=_blank style='color:#2F92EE;'>#癌症复发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71342, encryptionId=7eb6e134273, topicName=癌症复发)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5fad3959854, createdName=lq0302, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347372, encodeId=e1e834e372ad, content=谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=91802412712, createdName=1237cdb8m17暂无昵称, createdTime=Sun Sep 30 11:39:41 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347364, encodeId=44b034e36454, content=谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a3312404918, createdName=12361f67m31暂无昵称, createdTime=Sun Sep 30 10:20:48 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347235, encodeId=4f0834e2350d, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Sat Sep 29 14:21:09 CST 2018, time=2018-09-29, status=1, ipAttribution=)]
    2018-09-30 1237cdb8m17暂无昵称

    谢谢分享

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1668064, encodeId=d490166806460, content=<a href='/topic/show?id=902125e1351' target=_blank style='color:#2F92EE;'>#休眠#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=25713, encryptionId=902125e1351, topicName=休眠)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=34e226239625, createdName=yese, createdTime=Sat Feb 02 15:03:00 CST 2019, time=2019-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252543, encodeId=798912525430a, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375869, encodeId=5cc113e586958, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1425302, encodeId=003914253027f, content=<a href='/topic/show?id=7eb6e134273' target=_blank style='color:#2F92EE;'>#癌症复发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71342, encryptionId=7eb6e134273, topicName=癌症复发)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5fad3959854, createdName=lq0302, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347372, encodeId=e1e834e372ad, content=谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=91802412712, createdName=1237cdb8m17暂无昵称, createdTime=Sun Sep 30 11:39:41 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347364, encodeId=44b034e36454, content=谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a3312404918, createdName=12361f67m31暂无昵称, createdTime=Sun Sep 30 10:20:48 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347235, encodeId=4f0834e2350d, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Sat Sep 29 14:21:09 CST 2018, time=2018-09-29, status=1, ipAttribution=)]
    2018-09-30 12361f67m31暂无昵称

    谢谢

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1668064, encodeId=d490166806460, content=<a href='/topic/show?id=902125e1351' target=_blank style='color:#2F92EE;'>#休眠#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=25713, encryptionId=902125e1351, topicName=休眠)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=34e226239625, createdName=yese, createdTime=Sat Feb 02 15:03:00 CST 2019, time=2019-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252543, encodeId=798912525430a, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375869, encodeId=5cc113e586958, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1425302, encodeId=003914253027f, content=<a href='/topic/show?id=7eb6e134273' target=_blank style='color:#2F92EE;'>#癌症复发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71342, encryptionId=7eb6e134273, topicName=癌症复发)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5fad3959854, createdName=lq0302, createdTime=Mon Oct 01 05:03:00 CST 2018, time=2018-10-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347372, encodeId=e1e834e372ad, content=谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=91802412712, createdName=1237cdb8m17暂无昵称, createdTime=Sun Sep 30 11:39:41 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347364, encodeId=44b034e36454, content=谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a3312404918, createdName=12361f67m31暂无昵称, createdTime=Sun Sep 30 10:20:48 CST 2018, time=2018-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=347235, encodeId=4f0834e2350d, content=谢谢分享,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/07/16/3b24606172648eea459125cb74754afe.jpg, createdBy=6c022216608, createdName=liumin1987, createdTime=Sat Sep 29 14:21:09 CST 2018, time=2018-09-29, status=1, ipAttribution=)]
    2018-09-29 liumin1987

    谢谢分享,学习了。

    0

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