Cdh1 Deficiency Sensitizes TNBC Cells to PARP Inhibitors.

Cdh1 Deficiency Sensitizes TNBC Cells to PARP Inhibitors.
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Cdh1 缺陷使 TNBC 细胞对 PARP 抑制剂敏感

DOI:
10.3390/genes13050803
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发表时间:
2022-04-30
期刊:
影响因子:
3.5
通讯作者:
Wu, Wei
Wu, Wei
中科院分区:
生物学3区
文献类型:
--
作者:
Li, Junjun;Lan, Mengjiao;Peng, Jin;Xiong, Qunli;Xu, Yongfeng;Yang, Yang;Zhou, Ying;Liu, Jinlu;Zeng, Zhu;Yang, Xiaojuan;Zhang, Zhiwei;Zhang, Pumin;Zhu, Qing;Wu, Wei

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三阴性乳腺癌(TNBC)是一种目前缺乏靶向治疗选择的乳腺肿瘤。已经做出了巨大的努力来确定TNBC的治疗目标。在这里,我们报告说,后期促进复合物(APC)共激活因子Cdh 1在TNBC的表达水平升高相比,在邻近的健康组织,和高水平的Cdh 1表达与不良的炎症相关,这表明Cdh 1有助于TNBC的进展。干扰Cdh 1的功能可通过诱导DNA损伤、检查点激活、细胞周期阻滞和凋亡,增强PARP抑制剂对BRCA缺陷型和BRCA活性型TNBC细胞的细胞毒性作用。进一步的研究表明,Cdh 1促进BRCA 1病灶的形成,并防止解开的DNA进入有丝分裂,以响应TNBC细胞中的PARP抑制(PARPi)。总的来说,这些结果表明,APC/Cdh 1是针对TNBC的基于PARPi的疗法的潜在分子靶标。
Triple-negative breast cancer (TNBC) is a type of breast tumor that currently lacks options for targeted therapy. Tremendous effort has been made to identify treatment targets for TNBC. Here, we report that the expression level of anaphase promoting complex (APC) coactivator Cdh1 in TNBC is elevated compared to that in the adjacent healthy tissues, and high levels of Cdh1 expression are correlated with poor prognoses, suggesting that Cdh1 contributes to the progression of TNBC. Interfering with the function of Cdh1 can potentiate the cytotoxic effects of PARP inhibitors against BRCA-deficient and BRCA-proficient TNBC cells through inducing DNA damage, checkpoint activation, cell cycle arrest, and apoptosis. Further investigation reveals that Cdh1 promotes BRCA1 foci formation and prevents untangled DNA entering mitosis in response to PARP inhibition (PARPi) in TNBC cells. Collectively, these results suggest that APC/Cdh1 is a potential molecular target for PARPi-based therapies against TNBCs.
DOI: 10.3390/genes11090990
发表时间: 2020-08-25
期刊: Genes
影响因子: 3.5
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