Blood:IL10RA调控NPM1-ALK+间变性大细胞淋巴瘤对克唑替尼的敏感性

2020-07-01 MedSci原创 MedSci原创

在自分泌循环中,IL10受体绕过NPM1-ALK激活STAT3,以与IL10、IL10RA和IL10RB的启动子结合。

间变性大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)亦称 ki-1淋巴瘤,是一种T细胞恶性肿瘤,主要由过度激活的间变性淋巴瘤激酶(ALK)融合蛋白驱动。ALK抑制剂(例如克唑替尼)可替代标准化学疗法,其毒性和副作用均较化疗的低。

在临床试验中,由NPM1-ALK融合蛋白驱动的淋巴瘤患儿对ALK抑制疗法的客观缓解率为54-90%。但是,一部分患者在治疗的前3个月内进展。

迄今为止,ALK抑制剂耐药性进展的机制尚不清楚。

通过对ALCL细胞系进行全基因组CRISPR激活和敲除筛选,联合ALK抑制剂治疗后的复发患者的肿瘤细胞的RNA-seq数据,Prokoph等人发现IL10RA异常上调可驱动ALCL对克唑替尼抑制ALK的耐药性。IL10RA表达上调使STAT3信号转导通路重新布线,从而绕过了NPM1-ALK引起的其他关键磷酸化。

IL10RA的表达与ALCL患儿对标准化疗的反应不相关,提示克唑替尼联合化疗可预防ALK抑制剂耐药的特异性复发。

原始出处:

Nina Prokoph, et al. IL10RA Modulates Crizotinib Sensitivity in NPM1-ALK-positive Anaplastic Large Cell Lymphoma. Blood. June 23, 2020.

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    2020-08-21 医者仁心
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    2021-05-14 tcm99hq
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    2020-07-03 huangdf
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    2020-07-03 zhaohui6736

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