Targeting IRF3 as a YAP agonist therapy against gastric cancer.

Targeting IRF3 as a YAP agonist therapy against gastric cancer.
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靶向 IRF3 作为 YAP 激动剂治疗胃癌

DOI:
10.1084/jem.20171116
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发表时间:
2018-02-05
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Zhou Z
Zhou Z
中科院分区:
其他
文献类型:
--
作者:
Jiao S;Guan J;Chen M;Wang W;Li C;Wang Y;Cheng Y;Zhou Z

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河马途径在组织动态平衡和肿瘤发生中起着重要作用。转录因子IRF3是先天抗病毒免疫所必需的。在本研究中,我们发现IRF3是YAP的激动剂。IRF3在胃癌中的表达与YAP及其靶基因的表达呈正相关;IRF3和YAP的表达均上调,并预测患者的生存。IRF3与YAP和TEAD4在细胞核内相互作用,增强它们之间的相互作用,促进YAP的核转位和激活。IRF3和YAP-TEAD4在全基因组范围内相互关联,共同结合和共同调节河马途径的许多靶基因。激活的IRF3过表达增加,而缺失的IRF3减少,YAP在靶基因上的占有率增加。氨来昔诺是一种临床上用于抗炎治疗的药物,通过敲除或药理学靶向抑制IRF3,以YAP依赖的方式抑制胃肿瘤生长。总体而言,我们的研究确定IRF3是YAP的积极调节因子,突出了针对YAP驱动的癌症的新的治疗靶点。
The Hippo pathway plays a vital role in tissue homeostasis and tumorigenesis. The transcription factor IRF3 is essential for innate antiviral immunity. In this study, we discovered IRF3 as an agonist of Yes-associated protein (YAP). The expression of IRF3 is positively correlated with that of YAP and its target genes in gastric cancer; the expression of both IRF3 and YAP is up-regulated and prognosticates patient survival. IRF3 interacts with both YAP and TEAD4 in the nucleus to enhance their interaction, promoting nuclear translocation and activation of YAP. IRF3 and YAP–TEAD4 are associated genome-wide to cobind and coregulate many target genes of the Hippo pathway. Overexpression of active IRF3 increased, but depletion of IRF3 reduced, the occupancy of YAP on the target genes. Knockdown or pharmacological targeting of IRF3 by Amlexanox, a drug used clinically for antiinflammatory treatment, inhibits gastric tumor growth in a YAP-dependent manner. Collectively, our study identifies IRF3 as a positive regulator for YAP, highlighting a new therapeutic target against YAP-driven cancers.
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