Nat Immunol:胆固醇样分子关闭了靶向癌细胞“自然杀手”细胞的运行开关

2017-09-19 佚名 Medicalxpress

科学家已经发现影响抗癌细胞功能的罪魁祸首,就是一种胆固醇样分子,名为羟固醇,它就是关闭“自然杀手”细胞功能的元凶,使得杀手细胞无法执行捕获癌细胞的职责。

科学家已经发现影响抗癌细胞功能的罪魁祸首,就是一种胆固醇样分子,名为羟固醇,它就是关闭“自然杀手”细胞功能的元凶,使得杀手细胞无法执行捕获癌细胞的职责。

来自都柏林的科学家们发现了这一事实,研究结果发表在《自然免疫学》杂志上。报告中指出了一个前所未知的代谢开关,这是启动自然杀手细胞抗肿瘤行为的最初始行为。自然杀伤(NK)细胞是一种免疫细胞,在防御癌症的过程中扮演着重要的角色,一旦激活,天然杀手细胞就会增加细胞的吸收燃料,生化转化为能量的发动机。

在新的研究中,研究人员发现了这一代谢开关,研究人员在使用羟固醇之后,天然杀手细胞未能消灭肿瘤细胞,研究人员表示:“固醇调节元件组合蛋白的功能是控制自然杀手细胞能源生产的关键因素,从而激发他们的活动,而已知的胆固醇和胆固醇样分子,羟固醇却中断了这一行为,因此,我们的研究结果揭示了一种未知的自然杀伤细胞的抗癌功能中断的原因。”

肿瘤细胞可以产生羟固醇,而肥胖的人胆固醇水平往往偏高,科学家们相信这一发现有助于部分解释为什么NK细胞通常在癌症患者和肥胖人群体内表现不佳。

研究人员补充说:“下一步是调查自然杀伤细胞的功能在高胆固醇的条件下受损之后,是否可以在低胆固醇的条件下恢复过来,临床试验已经开始。”

原始出处:
Nadine Assmann, Katie L O'Brien, Raymond P Donnelly,et al.Srebp-controlled glucose metabolism is essential for NK cell functional responses, Nature Immunology (2017).2017.9.18. DOI: 10.1038/ni.3838

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1882448, encodeId=b4ae18824489c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Apr 18 11:46:00 CST 2018, time=2018-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252347, encodeId=0040125234e78, 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=29, 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=Thu Sep 21 00:46:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245639, encodeId=bc322456395a, content=很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2emBzjO0FtqTJ05AqrEEdRmp6tmlsLXqpzfxWdtgbbgPGWRHagoK9fLTd3IayRPgkJVIVBWtdlmnkBhOIR4cFM/0, createdBy=e8d51649330, createdName=飘飘爱, createdTime=Tue Sep 19 09:57:17 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2018-04-18 liye789132251
  2. [GetPortalCommentsPageByObjectIdResponse(id=1882448, encodeId=b4ae18824489c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Apr 18 11:46:00 CST 2018, time=2018-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252347, encodeId=0040125234e78, 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=29, 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=Thu Sep 21 00:46:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245639, encodeId=bc322456395a, content=很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2emBzjO0FtqTJ05AqrEEdRmp6tmlsLXqpzfxWdtgbbgPGWRHagoK9fLTd3IayRPgkJVIVBWtdlmnkBhOIR4cFM/0, createdBy=e8d51649330, createdName=飘飘爱, createdTime=Tue Sep 19 09:57:17 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2017-09-21 yxch36
  3. [GetPortalCommentsPageByObjectIdResponse(id=1882448, encodeId=b4ae18824489c, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Apr 18 11:46:00 CST 2018, time=2018-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252347, encodeId=0040125234e78, 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=29, 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=Thu Sep 21 00:46:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245639, encodeId=bc322456395a, content=很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2emBzjO0FtqTJ05AqrEEdRmp6tmlsLXqpzfxWdtgbbgPGWRHagoK9fLTd3IayRPgkJVIVBWtdlmnkBhOIR4cFM/0, createdBy=e8d51649330, createdName=飘飘爱, createdTime=Tue Sep 19 09:57:17 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2017-09-19 飘飘爱

    很好

    0