hnRNP Q/SYNCRIP与LIN28B相互作用,并调节人肝瘤细胞中的LIN28B/let-7轴
Jason Jei-Sheng Chang1,2, Ti Lin1, Xin-Yue Jhang1
1Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
PloS one
|July 8, 2024
概括
异质核核核糖核蛋白Q (hnRNP Q) 与LIN28B相互作用,影响let-7瘤抑制路径. hnRNP Q调制影响癌细胞增殖和肝细胞癌患者的预后.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 在RNA生物学,RNA生物学.
背景情况:
- 林28B蛋白抑制瘤抑制剂Let-7miRNA生物发生,影响细胞分化和癌症.
- 异质核核核糖核蛋白Q (hnRNP Q),也称为SYNCRIP,参与各种RNA处理事件和癌症代谢.
研究的目的:
- 调查 hnRNP Q 在 LIN28B/let-7 轴中的潜在作用.
- 为了确定hnRNP Q是否与LIN28B相互作用并影响let-7目标基因表达.
主要方法:
- 测试了hnRNP Q和LIN28B之间的RNA依赖相互作用.
- 进行了hNRNP Q的敲击实验,以评估对let-7目标 (TRIM71) 和LIN28B表达的影响.
- 利用光酶记者测试来评估TRIM71 3'UTR上的let-7活性.
- 评估了 hnRNP Q 枯竭对肝细胞癌细胞增殖的影响 (Huh7).
主要成果:
- hnRNP Q以RNA依赖的方式与LIN28B相互作用.
- hnRNP Q knockdown 降低了TRIM71和LIN28B的表达,增加了let-7小RNA水平,并降低了let-7对目标3'UTRs的活性.
- 降低HnRNP Q的含量会抑制Huh7细胞的增殖.
- 高HnRNP Q表达与肝细胞癌患者的预后不佳相关 (TCGA数据库).
结论:
- hnRNP Q 与 LIN28B 相互作用,并调节 LIN28B/let-7 轴.
- hnRNP Q在肝细胞癌进展中发挥作用,并作为潜在的预后标志物.
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