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如何让PD-1表现更好?浅谈致癌信号通路与抗肿瘤免疫逃逸的关系

2018-02-23 智康 MedSci原创

某些致癌信号通路的激活可能是导致T细胞不浸润进而形成免疫逃逸的主因

PD-1/PD-L1抗体是非常有效的抗癌药物,但这个有效性只体现在20%多一点的患者身上。如何让PD-1抗体表现更好,最关键的就是被激活的T淋巴细胞对于肿瘤的浸润。浸润T细胞是抗癌主力,T细胞被激活并识别和杀伤癌症的过程就是整个肿瘤免疫的循环主线,这个过程被多个细胞信号通路调控。对于抗PD-1耐受性机制和这些信号通路的探索将有助于发现能够与PD-1抗体联用,增强其抗癌效果的药物。本文将主要探讨这些致癌信号通路与抗肿瘤免疫逃逸的关系。CTLA4以及PD1(PDL1)抗体近来已经陆续被FDA批准用于治疗非小细胞肺癌、肾癌、膀胱癌、霍奇金淋巴瘤、头颈癌、Merkel细胞癌、肝癌以及胃食管连接部癌等(Le et al., 2017; Topalian et al., 2012)。但不得不承认,只有一小部分癌症患者可以从上述治疗方案中最终受益。进一步的分析发现只有在肿瘤中自带有CD8+T细胞浸润的患者,才能进一步在免疫治疗中表现出较好的临床反应(Tumeh et al., 2014)。简单总结一下启动自发抗肿瘤T细胞反应的重要“细胞和分子”事件。首先肿瘤细胞会释放CCL4等趋化因子用于招募BAT

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    2024-11-25 Sprite噗 来自广东省

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    2018-02-25 hb2008ye
  3. [GetPortalCommentsPageByObjectIdResponse(id=2239093, encodeId=7a4f2239093b7, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=4, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=59695559216, createdName=Sprite噗, createdTime=Mon Nov 25 16:44:37 CST 2024, time=2024-11-25, status=1, ipAttribution=广东省), GetPortalCommentsPageByObjectIdResponse(id=1370936, encodeId=fdee13e09367e, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=114, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Sun Feb 25 07:29:00 CST 2018, time=2018-02-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1539660, encodeId=0fe51539660f2, content=<a href='/topic/show?id=c61a2e315da' target=_blank style='color:#2F92EE;'>#信号通路#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27315, encryptionId=c61a2e315da, topicName=信号通路)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4dfa37, createdName=智者为医08, createdTime=Sun Feb 25 07:29:00 CST 2018, time=2018-02-25, status=1, ipAttribution=)]

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