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Hepatology:评估肝癌预后的新因子!

2017-11-12 MedSci MedSci原创

Hippo通路可以调节细胞的分化、增殖和凋亡。激活Hippo通路后,它可以抑制转录激活物YAP进入细胞核,从而抑制促增殖基因的转录。因此,动态和精确的控制Hippo途径对器官大小的控制和肿瘤形成的预防至关重要。 Hippo信号由越来越多的上游调控因子(包括WWC蛋白)控制,这些蛋白可以触发丝氨酸/苏氨酸激酶途径。其中的一个组成部分是LATS激酶,其可以将YAP磷酸化,并将其捕获在细胞质中

Hippo通路可以调节细胞的分化、增殖和凋亡。激活Hippo通路后,它可以抑制转录激活物YAP进入细胞核,从而抑制促增殖基因的转录。因此,动态和精确的控制Hippo途径对器官大小的控制和肿瘤形成的预防至关重要。 


Hippo信号由越来越多的上游调控因子(包括WWC蛋白)控制,这些蛋白可以触发丝氨酸/苏氨酸激酶途径。其中的一个组成部分是LATS激酶,其可以将YAP磷酸化,并将其捕获在细胞质中。

已有研究显示,WWC蛋白在体外与LATS相互作用并刺激其激酶活性,从而直接促进磷酸化YAP的细胞质积累。然而,WWC蛋白在调节细胞增殖,控制器官大小和预防体内肿瘤中的功能尚未确定。

近期,一项发表在杂志Hepatology上的研究显示,在小鼠肝脏WWC表达的缺失可以导致组织的过度生长、炎症、纤维化和肝癌的形成。WWC缺陷的小鼠肝脏显示出LATS活性的降低,YAP介导的基因转录增加和肝祖细胞增殖的增强。另外,肝脏中WWC表达的缺失也加速了血管生成抑制素结合蛋白(其作为YAP活性的负调节剂)的转换。

此项研究结果表明:WWC蛋白可以作为肝细胞生长和肝肿瘤发生中经典和非经典Hippo信号传导调节剂的基本功能。因此,WWC蛋白的表达可以作为人类肝癌预后的新因子。

原始出处:
Hermann A, Wennmann DO, et al. WWC proteins regulate hepatic cell differentiation and tumorigenesis via the Hippo signaling pathway. Hepatology. 2017 Nov 8. doi: 10.1002/hep.29647. 

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    2017-11-23 虈亣靌

    好好学习努力向上

    0

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    2017-11-19 jyzxjiangqin

    评估肝癌预后的新因子.

    0

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    2017-11-17 虈亣靌

    好消息.值得学习

    0

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    2017-11-14 gwc384
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    2017-11-12 虈亣靌

    优质资源.共同学习

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=263551, encodeId=e207263551f7, content=好好学习努力向上, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, 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=Thu Nov 23 08:46:05 CST 2017, time=2017-11-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=262456, encodeId=6d6d262456c6, content=评估肝癌预后的新因子., beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Sun Nov 19 07:32:19 CST 2017, time=2017-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=262041, encodeId=9abb262041c2, content=好消息.值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, 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=Fri Nov 17 16:55:06 CST 2017, time=2017-11-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1426888, encodeId=8f761426888db, content=<a href='/topic/show?id=221d685172' target=_blank style='color:#2F92EE;'>#EPA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6851, encryptionId=221d685172, topicName=EPA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4a9b4077760, createdName=gwc384, createdTime=Tue Nov 14 04:09:00 CST 2017, time=2017-11-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260829, encodeId=46d026082937, content=优质资源.共同学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, 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=Sun Nov 12 19:15:17 CST 2017, time=2017-11-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=260793, encodeId=dbff260e93ca, content=学习了.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sun Nov 12 14:28:41 CST 2017, time=2017-11-12, status=1, ipAttribution=)]
    2017-11-12 1e0f8808m18(暂无匿称)

    学习了.谢谢分享.

    0

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