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Blood:打破MALT1反馈机制或可使MALT1抑制剂的抗淋巴瘤疗效很大化

2020-08-28 MedSci原创 MedSci原创

MALT1抑制剂依赖于组成性或异常信号通路,是治疗B细胞淋巴瘤的有效药物。然而,信号转导靶向治疗的一个潜在限制是反馈机制的发生,使肿瘤细胞能够逃脱此类药物的全部影响。

MALT1抑制剂依赖于组成性或异常信号通路,是治疗B细胞淋巴瘤的有效药物。然而,信号转导靶向治疗的一个潜在限制是反馈机制的发生,使肿瘤细胞能够逃脱此类药物的全部影响。

在本研究中,Gabas等对用MALT1的不可逆性小分子抑制剂处理的ABC-DLBCL细胞进行功能基因组学筛选,以确定可能赋予抗性或增强MALT1抑制活性的基因。

研究显示,BCR和PI3K激活蛋白的缺失可增强肿瘤细胞对MALT1抑制的敏感性,而这些通路的负调控因子(如TRAF2、TNFAIP3)的缺失则促进MALT1抑制的耐受性的产生。而且这些发现通过敲除单个基因以及用BCR和PI3K通路的靶向药物联合筛选得以验证。其中,PI3Kd抑制剂在体内外对ABC-DLBCL的联合作用最强,但它导致p-S6的适应性增加,疾病最终还是会发生进展。

在这些细胞系中,抑制MALT1可促进S6K1-T389和S6-S235/6的mTORC1活性和磷酸化水平升高,该作用在体内外仅部分被PI3Kd抑制所阻断。相反,与PI3K抑制剂相比,同时抑制MALT1和mTORC1可阻断S6磷酸化,产生对DLBCL细胞株和原发患者样本的强大活性,获得更好的肿瘤消退效果,并显著提高了ABC-DLBCL在体内的存活率。

综上所述,本研究结果表明,通过破坏可能限制MALT1抑制剂疗效的反馈机制,或可使MALT1抑制剂在临床上的治疗效果最大化

原始出处:

Lorena Fontan Gabas,et al. Identification of MALT1 Feedback Mechanisms Enables Rational Design of Potent Anti-Lymphoma Regimens for ABC-DLBCL. Blood. August 12,2020.

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    2021-06-25 shizhenshan
  2. [GetPortalCommentsPageByObjectIdResponse(id=1861398, encodeId=fe831861398f7, content=<a href='/topic/show?id=401a23e102' target=_blank style='color:#2F92EE;'>#ALT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2371, encryptionId=401a23e102, topicName=ALT)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ccbd84, createdName=shizhenshan, createdTime=Fri Jun 25 05:12:22 CST 2021, time=2021-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1852469, encodeId=072a1852469c7, content=<a href='/topic/show?id=f0a254918f0' target=_blank style='color:#2F92EE;'>#抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54918, encryptionId=f0a254918f0, topicName=抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Fri Dec 11 23:12:22 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=880508, encodeId=353088050890, content=优秀, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210725/69b5882b3c3845c19efa131b4ff8b1f7/06ccd8f1857e4e14862049ab235618eb.jpg, createdBy=74c72110107, createdName=qinqiyun, createdTime=Fri Aug 28 23:59:51 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1032627, encodeId=7c93103262ecb, content=谢谢梅斯提供这么好的信息,学到很多, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=内科新手, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039317, encodeId=72ad103931efa, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=814723, encodeId=17a1814e2303, content=学习了、涨知识!, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Fri Aug 28 13:34:40 CST 2020, time=2020-08-28, status=1, ipAttribution=)]
    2020-12-11 jklm09
  3. [GetPortalCommentsPageByObjectIdResponse(id=1861398, encodeId=fe831861398f7, content=<a href='/topic/show?id=401a23e102' target=_blank style='color:#2F92EE;'>#ALT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2371, encryptionId=401a23e102, topicName=ALT)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ccbd84, createdName=shizhenshan, createdTime=Fri Jun 25 05:12:22 CST 2021, time=2021-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1852469, encodeId=072a1852469c7, content=<a href='/topic/show?id=f0a254918f0' target=_blank style='color:#2F92EE;'>#抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54918, encryptionId=f0a254918f0, topicName=抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Fri Dec 11 23:12:22 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=880508, encodeId=353088050890, content=优秀, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210725/69b5882b3c3845c19efa131b4ff8b1f7/06ccd8f1857e4e14862049ab235618eb.jpg, createdBy=74c72110107, createdName=qinqiyun, createdTime=Fri Aug 28 23:59:51 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1032627, encodeId=7c93103262ecb, content=谢谢梅斯提供这么好的信息,学到很多, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=内科新手, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039317, encodeId=72ad103931efa, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=814723, encodeId=17a1814e2303, content=学习了、涨知识!, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Fri Aug 28 13:34:40 CST 2020, time=2020-08-28, status=1, ipAttribution=)]
    2020-08-28 qinqiyun

    优秀

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1861398, encodeId=fe831861398f7, content=<a href='/topic/show?id=401a23e102' target=_blank style='color:#2F92EE;'>#ALT#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2371, encryptionId=401a23e102, topicName=ALT)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ccbd84, createdName=shizhenshan, createdTime=Fri Jun 25 05:12:22 CST 2021, time=2021-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1852469, encodeId=072a1852469c7, content=<a href='/topic/show?id=f0a254918f0' target=_blank style='color:#2F92EE;'>#抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54918, encryptionId=f0a254918f0, topicName=抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Fri Dec 11 23:12:22 CST 2020, time=2020-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=880508, encodeId=353088050890, content=优秀, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210725/69b5882b3c3845c19efa131b4ff8b1f7/06ccd8f1857e4e14862049ab235618eb.jpg, createdBy=74c72110107, createdName=qinqiyun, createdTime=Fri Aug 28 23:59:51 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1032627, encodeId=7c93103262ecb, content=谢谢梅斯提供这么好的信息,学到很多, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=内科新手, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1039317, encodeId=72ad103931efa, content=机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿肿, createdTime=Fri Aug 28 16:12:22 CST 2020, time=2020-08-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=814723, encodeId=17a1814e2303, content=学习了、涨知识!, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Fri Aug 28 13:34:40 CST 2020, time=2020-08-28, status=1, ipAttribution=)]
    2020-08-28 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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    2020-08-28 肿肿

    机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要

    0

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    2020-08-28 ms2000001051330459

    学习了、涨知识!

    0

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