由HnRNPR介导的UPF3BmRNA剪接驱动肝细胞癌转移
Hong Wang1, Dong Qian2, Jiabei Wang3
1Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery, Anhui Provincial Clinical Research Center for Hepatobiliary Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China; Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
异常的替代拼接驱动肝细胞癌 (HCC) 转移. 这项研究揭示了UPF3B-S通过降解CDH1mRNA和激活YAP1-Hippo信号来促进HCC入侵,这表明UPF3B-S是潜在的生物标志物.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 异常替代拼接 (AS) 是肝细胞癌 (HCC) 肝脏内侵入和转移的关键驱动因素.
- HCC的高致死率与激进的转移性传播有关,需要对其潜在的分子机制进行研究.
研究的目的:
- 为了研究UPF3B-S的功能作用,一个截断的瘤性拼接变体,在促进HCC转移.
- 阐明UPF3B-S对HCC入侵和转移潜力的分子机制.
主要方法:
- 使用Basescope测定用于UPF3B-S在HCC组织和细胞中的mRNA表达分析.
- 采用RNA免疫沉和体外/体内模型来探索UPF3B-S功能及其调节途径.
- 研究了UPF3B-S对CDH1mRNA,E-cadherin和Hippo信号通路组件的影响.
主要成果:
- 确定了与UPF3B前mRNA结合的拼接因子HnRNPR,产生了UPF3B-S变体.
- 发现高UPF3B-S表达与HCC转移和患者生存率差相关.
- 证明UPF3B-S的淘汰抑制HCC细胞的入侵和迁移,针对CDH1mRNA进行降解,降低E-cadherin的调节,并激活YAP1-Hippo通路.
结论:
- 由HnRNPR诱导的UPF3B-S通过消耗CDH1mRNA和调节YAP1-Hippo信号来促进HC的入侵和转移.
- UPF3B-S成为临床治疗侵入性HCC的潜在生物标志物.
- 针对UPF3B-S可能为先进的HCC提供治疗策略.
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