鉴定BRCC3和BRCA1作为TAZ稳定性和活动的调节者
Silvia Sberna1, Alejandro Lopez-Hernandez1, Chiara Biancotto1
1Center for Genomic Science of IIT, CGS@SEMM (Istituto Italiano di Tecnologia at European School of Molecular Medicine), Fondazione Istituto Italiano di Tecnologia (IIT), 20139 Milan, Italy.
Cells
|October 27, 2023
概括
研究人员确定了TAZ的新型调节剂,TAZ是细胞生长和癌症中的关键蛋白质. 发现BRCA1复杂组件BRCC3控制TAZ稳定性,这表明BRCA1突变可能通过激活TAZ驱动癌症.
科学领域:
- 分子和细胞生物学分子和细胞生物学
- 癌症研究 癌症研究
- 信号传输 信号传输
背景情况:
- TAZ (WWTR1) 是一种转录协活性剂,参与细胞增殖,存活和分化,对发育和再生至关重要.
- 在侵袭性癌症中,YAP和TAZ经常被激活,但根本的调节机制尚未完全理解.
- 识别TAZ的新兴上游调节剂对于理解TAZ在瘤发生中的作用至关重要.
研究的目的:
- 使用大规模siRNA屏幕识别TAZ转录活性的新型调节剂.
- 调查已识别的调节器,特别是BRCC3在TAZ调节和癌症中的作用.
主要方法:
- 进行了基于siRNA的选,以确定调节TAZ转录活性的基因.
- 验证了候选基因,重点关注BRCC3及其与TAZ的相互作用.
- 研究了BRCC3/BRCA1损失对TAZ水平和活性的影响.
- 研究了细胞质BRCA1复合体在TAZ无处不在和稳定性中的作用.
主要成果:
- 确定了调节TAZ活性的200个基因,包括那些参与细胞与细胞接触,细胞骨,WNT信号和炎症的基因.
- 发现BRCC3,一个BRCA1复杂组件,作为TAZ的新型调节者.
- 证明BRCC3或BRCA1的损失会增加TAZ水平和活性.
- 表明细胞质BRCA1复合体控制TAZ无化和蛋白质稳定性.
结论:
- BRCC3和BRCA1复合体是TAZ稳定性和活性的新型调节者.
- 在瘤中不激活BRCA1可能通过激活TAZ瘤基因来促进细胞转化.
- 这些发现揭示了TAZ的新调节途径,对癌症发展有影响.
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