Blood:Bruton酪氨酸激酶的非共价抑制剂(GDC-0853),为对依鲁替尼耐药的CLL患者带来新的希望!

2018-07-19 MedSci MedSci原创

依鲁替尼在临床上的成功证实了Bruton酪氨酸激酶(BTK)抑制是治疗包括慢性淋巴细胞白血病(CLL)在内的血液性恶性肿瘤的有效方案。虽然依鲁替尼可使患者获得持久性的缓解,但会产生耐药性,主要是由依鲁替尼结合位点BTK的C481突变引起。近日,Blood杂志上发表一篇文章,研究人员对新型BTK抑制剂(GDC-0853)用于治疗幼稚型和依鲁替尼耐受性CLL的预临床疗效进行评估。GDC-0853是一种

依鲁替尼在临床上的成功证实了Bruton酪氨酸激酶(BTK)抑制是治疗包括慢性淋巴细胞白血病(CLL)在内的血液性恶性肿瘤的有效方案。虽然依鲁替尼可使患者获得持久性的缓解,但会产生耐药性,主要是由依鲁替尼结合位点BTK的C481突变引起。

近日,Blood杂志上发表一篇文章,研究人员对新型BTK抑制剂(GDC-0853)用于治疗幼稚型和依鲁替尼耐受性CLL的预临床疗效进行评估。GDC-0853是一种独特的BTK抑制剂,不依赖于与C481共价反应来稳定其对BTK’s ATP结合位点的结合来发挥作用。

用于治疗幼稚型CLL细胞时,GDC-0853类似于依鲁替尼,可降低B细胞受体信号、CLL细胞的存活能力、NF-κB依赖性转录、激活和转移。此外,研究人员还发现,在生化酶活性试验和稳转的293T细胞系中,GDC-0853均可抑制最常见的依鲁替尼耐受的BTK突变——C481S,此外,GDC-0853可维持对携带C481S BTK突变的患者CLL细胞的细胞毒性。

此外,GDC-0853对依鲁替尼的两个替代靶点EGFR和ITK无抑制作用,EGFR与某些副反应事件相关,ITK或可降低依鲁替尼抗体联合用药的疗效。

总而言之,本研究通过GDC-0853证实,非共价的选择性BTK抑制剂或许可作为单药疗法或与其他抗体联合用于CLL患者,特别是对于依鲁替尼疗法产生耐药性的患者。

原始出处:

Sean D. Reiff, et al. Non-covalent inhibition of C481S Bruton’s tyrosine kinase by GDC-0853: a new treatment strategy for ibrutinib resistant CLL. Blood  2018  :blood-2017-10-809020;  doi: https://doi.org/10.1182/blood-2017-10-809020

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    2019-05-03 jklm09
  2. [GetPortalCommentsPageByObjectIdResponse(id=1851750, encodeId=573e1851e500d, 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 May 03 09:48:00 CST 2019, time=2019-05-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1740649, encodeId=ddc91e406490d, content=<a href='/topic/show?id=fd0a95511dd' target=_blank style='color:#2F92EE;'>#酪氨酸激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=95511, encryptionId=fd0a95511dd, topicName=酪氨酸激酶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=22af34798690, createdName=luckyshitiancai_42705695, createdTime=Tue May 14 18:48:00 CST 2019, time=2019-05-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333340, encodeId=751733334005, content=好文章,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2018/07/09/9d6ae4a345db0c5799f866ac5743fbc0.jpg, createdBy=0ba62073690, createdName=GZphD9, createdTime=Sun Jul 22 10:01:29 CST 2018, time=2018-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1496023, encodeId=1c92149602349, content=<a href='/topic/show?id=9c516685eea' target=_blank style='color:#2F92EE;'>#激酶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, 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=Sat Jul 21 11:48:00 CST 2018, time=2018-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=332776, encodeId=04ba332e76e8, content=了解一下,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Thu Jul 19 21:02:16 CST 2018, time=2018-07-19, status=1, ipAttribution=)]
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    2018-07-22 GZphD9

    好文章,学习了

    0

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    2018-07-21 redcrab
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    2018-07-19 天地飞扬

    了解一下,谢谢分享!

    0

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