SETDB1 甲基化物 MCT1 通过增强乳酸穿促进瘤进展
Xiaowei She1, Qi Wu1, Zejun Rao1
1GI Cancer Research Institute, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 4, 2023
概括
通过K473三甲基化,SET域分叉1 (SETDB1) 通过K473三甲基化稳定单碳酸盐载体1 (MCT1). 这种修改通过促进糖解和巨细胞两极分化来增强结直肠癌的进展,这表明MCT1甲基化作为治疗点.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 生物化学 生物化学
背景情况:
- 单碳酸盐运输体1 (MCT1) 对于乳酸运输和瘤代谢至关重要.
- 对于MCT1的转录后调节仍然不完全理解.
- 了解MCT1调节对于向癌细胞代谢至关重要.
研究的目的:
- 确定调节MCT1稳定性和功能的新型翻译后修改.
- 调查SETDB1在MCT1调控中的作用.
- 探索MCT1修饰对结直肠癌 (CRC) 进展的影响.
主要方法:
- 在体外和体内测试以研究SETDB1-MCT1相互作用和甲基化.
- 分析MCT1与Tollip的相互作用以及随后的自降解.
- 在CRC模型中评估MCT1 K473三甲基化对瘤糖解和巨细胞极化的影响.
- 对MCT1 K473三甲基化与CRC进展和生存的临床相关性研究.
主要成果:
- 通过K473三甲基化,SETDB1直接与MCT1相互作用并使其稳定.
- MCT1 K473三甲基化抑制了托利普介导的自降解.
- 升高的MCT1 K473三甲基化促进CRC中的瘤糖解和M2类巨细胞两极分化,增强乳酸穿.
- 临床CRC样本显示上调的MCT1 K473三甲基化,与瘤进展和较差的整体存活率相关.
结论:
- 通过SETDB1介导的MCT1 K473三甲基化是一种乳酸穿的新型调节机制.
- 这种修改对结直肠癌的进展和代谢重编程有显著的贡献.
- MCT1 K473甲基化为结直肠癌的潜在预后生物标志物和治疗点.
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