Blood:抑制HDAC6可上调CD20水平,并增强抗CD20单克隆抗体的疗效。

2017-08-23 qinqiyun MedSci原创

单克隆抗体的靶点CD20的表达下调,会导致临床上采用抗CD20为基础的治疗方案效果降低。CD20编码基因(MS4A1)的表观调控被认为是抗CD20抗体疗效减退的机制,并经非选择性组蛋白脱乙酰化酶抑制剂(HDACi)证实。如何增强抗Cd20单克隆抗体的治疗效果?

组蛋白脱乙酰化酶6(HDAC6)是由HDAC6基因编码的酶。在转录调节、细胞周期和发育过程中发挥重要作用。

中心点:

HDAC6抑制代表一种新的增强抗CD20单克隆抗体的疗效的策略。

HDAC6在不影响基因表达水平的情况下,增加CD20蛋白的合成来提高CD20水平。

摘要:

单克隆抗体的靶点CD20的表达下调,会导致临床上采用抗CD20为基础的治疗方案效果降低。CD20编码基因(MS4A1)的表观调控被认为是抗CD20抗体疗效减退的机制,并经非选择性组蛋白脱乙酰化酶抑制剂(HDACi)证实。鉴于广谱HDACi会增加副作用,鉴定参与CD20调节的特定HDAC亚型显得至关重要。

本研究中,研究人员首次证实HDAC6在调控CD20水平中的作用。研究显示抑制HDAC6的活性可以显着提高B细胞肿瘤细胞系和原代恶性细胞的CD20的水平。运用药理学和基因方法,研究人员证明抑制HDAC6可增强体外抗CD20单克隆抗体的效果,并可延长利妥昔单抗治疗的小鼠的存活期。

机制上,研究人员证明HDAC6是在非MS4A1基因转录水平上影响CD20蛋白的合成。此外,抑制HDAC6后,CD20 mRNA的翻译水平显着增强,表明HDAC6还在CD20转录后水平发挥调控作用。

总之,研究结果表明HDAC6抑制可用于辅助抗CD20单克隆抗体疗法,为HDAC6抑制剂的临床应用开辟一条新的道路。

原始出处:

Malgorzata Bobrowicz,et al.HDAC6 inhibition up-regulates CD20 levels and increases the efficacy of anti-CD20 monoclonal antibodies.Blood.August 22,2017.https://doi.org/10.1182/blood-2016-08-736066

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    2018-04-21 aliceclz
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    2018-06-12 zhaojie88
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    2017-12-02 xzw113
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    2018-06-10 lingaifan
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    2017-08-23 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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