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Sci Rep:丙酮酸激酶M2的抑制明显的减弱了晚期膀胱癌对铂化合物的化学抵抗性

2017-04-30 AlexYang MedSci原创

铂化合物的化学抵抗性是导致晚期膀胱癌(BC)治疗失败的致死的主要原因。但是,潜在的机制仍旧不清楚,这也阻碍了治疗策略的发展。最近的研究数据表明丙酮酸激酶M2(PKM2),一个瓦博格效应糖解酶,在BC中的表达水平强烈地提高了。最近,有研究人员就PKM2在化学抵抗性中的角色和是否抑制PKM2就可以增加对铂化合物的抵抗性和减少BC生长和发展进行了研究。研究发现,紫草素结合PKM2并能抑制BC细胞存活,且

铂化合物的化学抵抗性是导致晚期膀胱癌(BC)治疗失败的致死的主要原因。但是,潜在的机制仍旧不清楚,这也阻碍了治疗策略的发展。最近的研究数据表明丙酮酸激酶M2(PKM2),一个瓦博格效应糖解酶,在BC中的表达水平强烈地提高了。

最近,有研究人员就PKM2在化学抵抗性中的角色和是否抑制PKM2就可以增加对铂化合物的抵抗性和减少BC生长和发展进行了研究。研究发现,紫草素结合PKM2并能抑制BC细胞存活,且是以一种剂量依赖和丙酮酸激酶活性依赖的方式。通过shRNA下调PKM2的表达可迟钝细胞对紫草素的响应,但是增强了对铂化合物的响应。另外,和单独使用相比,紫草素和铂化合物一同使用展现了显著的对增殖和凋亡更强的抑制作用。研究还发现,诱导的铂化合物抗性与PKM2的超表达强烈相关,并且铂化合物抗性细胞对紫草素响应敏感。在同系小鼠中,紫草素和铂化合物同时作用可以显著的减少BC的生长和代谢。最后,研究人员指出,基于这些数据,PKM2的超表达是晚期BC对铂化合物表现化学抵抗性的一个关键机制。通过RNAi或者化学抑制剂对PKM2进行抑制也许是一种高效的方法去克服化学抵抗性并且可以改善晚期BC的治疗效果。

原始出处:

Xing Wang, Fenglin Zhang,Xue-Ru Wu. Inhibition of Pyruvate Kinase M2 Markedly Reduces Chemoresistance of Advanced Bladder Cancer to Cisplatin. Sci Rep. 05 April 2017. doi:10.1038/srep45983.

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    2018-04-06 yige2012
  5. [GetPortalCommentsPageByObjectIdResponse(id=1906345, encodeId=55d619063457a, content=<a href='/topic/show?id=7795334e220' target=_blank style='color:#2F92EE;'>#化合物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33472, encryptionId=7795334e220, topicName=化合物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=267e204, createdName=wangyang7958, createdTime=Sun Jul 16 01:28:00 CST 2017, time=2017-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2058232, encodeId=37d82058232e6, content=<a href='/topic/show?id=265e2094875' target=_blank style='color:#2F92EE;'>#丙酮酸激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20948, encryptionId=265e2094875, topicName=丙酮酸激酶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0ad8182, createdName=axin009, createdTime=Sun Oct 08 07:28:00 CST 2017, time=2017-10-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1981674, encodeId=088419816e42d, content=<a href='/topic/show?id=d690965e892' target=_blank style='color:#2F92EE;'>#铂化合物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96578, encryptionId=d690965e892, topicName=铂化合物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cce318, createdName=wleon8895, createdTime=Fri Nov 03 07:28:00 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1665927, encodeId=1c28166592e28, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4d5926034382, createdName=yige2012, createdTime=Fri Apr 06 02:28:00 CST 2018, time=2018-04-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1737505, encodeId=7a311e3750570, content=<a href='/topic/show?id=292f965e5b5' target=_blank style='color:#2F92EE;'>#铂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96575, encryptionId=292f965e5b5, topicName=铂)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ca4034296500, createdName=ms3153534357578991, createdTime=Sun Dec 03 15:28:00 CST 2017, time=2017-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1495959, encodeId=338014959590f, content=<a href='/topic/show?id=9c516685eea' target=_blank style='color:#2F92EE;'>#激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66857, encryptionId=9c516685eea, topicName=激酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=73449239400, createdName=redcrab, createdTime=Tue May 02 00:28:00 CST 2017, time=2017-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1625438, encodeId=f6d516254384d, content=<a href='/topic/show?id=d5bf598839c' target=_blank style='color:#2F92EE;'>#晚期膀胱癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59883, encryptionId=d5bf598839c, topicName=晚期膀胱癌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=554520789771, createdName=mfx806, createdTime=Tue May 02 00:28:00 CST 2017, time=2017-05-02, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1906345, encodeId=55d619063457a, content=<a href='/topic/show?id=7795334e220' target=_blank style='color:#2F92EE;'>#化合物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33472, encryptionId=7795334e220, topicName=化合物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=267e204, createdName=wangyang7958, createdTime=Sun Jul 16 01:28:00 CST 2017, time=2017-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2058232, encodeId=37d82058232e6, content=<a href='/topic/show?id=265e2094875' target=_blank style='color:#2F92EE;'>#丙酮酸激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=20948, encryptionId=265e2094875, topicName=丙酮酸激酶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0ad8182, createdName=axin009, createdTime=Sun Oct 08 07:28:00 CST 2017, time=2017-10-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1981674, encodeId=088419816e42d, content=<a href='/topic/show?id=d690965e892' target=_blank style='color:#2F92EE;'>#铂化合物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96578, encryptionId=d690965e892, topicName=铂化合物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cce318, createdName=wleon8895, createdTime=Fri Nov 03 07:28:00 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1665927, encodeId=1c28166592e28, content=<a href='/topic/show?id=6f7d553159c' target=_blank style='color:#2F92EE;'>#抗性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55315, encryptionId=6f7d553159c, topicName=抗性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4d5926034382, createdName=yige2012, createdTime=Fri Apr 06 02:28:00 CST 2018, time=2018-04-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1737505, encodeId=7a311e3750570, content=<a href='/topic/show?id=292f965e5b5' target=_blank style='color:#2F92EE;'>#铂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96575, encryptionId=292f965e5b5, topicName=铂)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ca4034296500, createdName=ms3153534357578991, createdTime=Sun Dec 03 15:28:00 CST 2017, time=2017-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1495959, encodeId=338014959590f, content=<a href='/topic/show?id=9c516685eea' target=_blank style='color:#2F92EE;'>#激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66857, encryptionId=9c516685eea, topicName=激酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=73449239400, createdName=redcrab, createdTime=Tue May 02 00:28:00 CST 2017, time=2017-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1625438, encodeId=f6d516254384d, content=<a href='/topic/show?id=d5bf598839c' target=_blank style='color:#2F92EE;'>#晚期膀胱癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59883, encryptionId=d5bf598839c, topicName=晚期膀胱癌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=554520789771, createdName=mfx806, createdTime=Tue May 02 00:28:00 CST 2017, time=2017-05-02, status=1, ipAttribution=)]
    2017-05-02 redcrab
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