THOC3与YBX1相互作用,通过PFKFB4 mRNA修饰促进肺状细胞癌的进展
Tao Yu1, Qi Zhang1,2, Shao-Kun Yu1
1Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, China.
通过稳定PFKFB4mRNA,THO复合体子单元3 (THOC3) 促进肺状细胞癌 (LUSC). 抑制THOC3可能为LUSC患者提供新的治疗策略.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 基因规则 基因规则
背景情况:
- THO复合体 (THOC) 对于RNA修饰和瘤发育至关重要.
- 在肺癌,特别是肺状细胞癌 (LUSC) 中THOC3的特定作用以前未被描述.
研究的目的:
- 研究THOC3在肺状细胞癌 (LUSC) 的功能和机制.
- 确定针对LUSC中的THOC3的治疗潜力.
主要方法:
- 在LUSC组织中分析THOC3表达和与预后的相关性.
- 对THOC3水平进行实验性操纵 (敲击),以评估对LUSC细胞行为的影响.
- 研究涉及THOC3,TRiC蛋白 (CCT8,CCT6A),YBX1和PFKFB4的蛋白质-蛋白质相互作用和调节途径.
- 评估PFKFB4mRNA出口和稳定机制.
- 评估PFKFB4下调对LUSC细胞活动的影响.
主要成果:
- 在LUSC中THOC3的表达很高,并且与预后不佳有关.
- 在THOC3 Knockdown中,它可以抑制LUSC细胞的增殖,迁移和糖解.
- 通过蛋白质折叠,TRiC蛋白 (CCT8,CCT6A) 调节THOC3的表达.
- THOC3与YBX1形成复合体,促进PFKFB4的转录和mRNA的输出.
- YBX1通过识别m5C位点来稳定PFKFB4mRNA,而PFKFB4的下调抑制了LUSC的进展.
结论:
- 在CCT蛋白的支持下,THOC3与YBX1合作维持PFKFB4的表达,推动LUSC的发展.
- THOC3代表了肺状细胞癌的潜在新型治疗标.
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