mTORC1通过USP7mRNA的m6A-依赖稳定加速骨髓瘤的进展
Zhengming Yang1,2, Wei Yu3,4, Ankai Xu3,4
1Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. 2200013@zju.edu.cn.
Cell death discovery
|March 12, 2024
概括
17β-雌二醇 (E2) 通过激活mTORC1信号,从而提高USP7稳定性和NLRP3炎症酶活性,驱动骨肉瘤 (OS) 的进展. 这一途径揭示了E2驱动的OS的新治疗标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 内分泌学 在内分泌学.
背景情况:
- 骨髓瘤 (OS) 是一种依赖性类固醇激素的骨瘤.
- 17β-雌二醇 (E2) 在OS的发育和进展中起作用.
- 需要进一步阐明E2调节的OS进展的精确机制.
研究的目的:
- 调查E2激活信号通路在OS进展中的作用.
- 确定E2驱动的OS的新型分子机制和治疗点.
主要方法:
- 研究了E2对哺乳动物目标拉巴胺素 (mTOR) 信号传递和N6-甲基氨酸 (m6A) 修改的影响.
- 使用了OS的细胞培养模型,包括对mTOR复合体1 (mTORC1),WTAP和全方位素特异蛋白酶7 (USP7) 的操纵.
- 分析了USP7和NLRP3之间的相互作用,并评估了对炎症体信号和OS细胞行为的影响.
主要成果:
- E2激活的mTORC1信号通过调节WTAP促进了m6A的修饰,增强了OS细胞的增殖和迁移.
- mTORC1通过m6A修饰促进了USP7的mRNA稳定性;USP7的丧失抑制了OS的进展.
- USP7对NLRP3进行了二氧化,增强了NLRP3的炎症体信号传递;USP7和NLRP3在具有高E2水平的OS患者中得到了上调.
结论:
- E2激活的mTORC1信号促进USP7的稳定性,导致NLRP3表达和炎症酶激活的增加,从而推动OS细胞的增殖和迁移.
- 这项研究揭示了E2在调节OS进展中的新机制.
- USP7和NLRP3炎症酶途径代表了E2驱动骨髓瘤的潜在治疗点.
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