由METTL3介导的N6-Methyladenosine修饰促进DNA-PKcs表达,以诱导骨髓瘤中的anlotinib耐药性
Yining Zhang1,2, Guohong Shen3, Dan Zhang4
1The First Clinical College of Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
Clinical and translational medicine
|February 9, 2025
概括
通过调节自,DNA-PKcs促进骨髓瘤中的anlotinib耐药性. METTL3通过诱导PRKDCmRNA的m6A修饰来增强这种抗性,从而增加DNA-PKcs表达. 针对METTL3/PRKDC可能会改善骨髓瘤治疗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 对anlotinib的耐药性是骨髓瘤治疗中的一个重大挑战.
- 了解耐药机制对于优化安洛尼布疗效至关重要.
- 依赖DNA的蛋白激酶催化子单元 (DNA-PKcs) 已与骨髓瘤化学抵抗有关.
研究的目的:
- 为了阐明DNA-PKcs在骨髓瘤瘤中对anlotinib耐药性的作用.
- 为了研究DNA-PKcs和Beclin-1在自调节中的相互作用.
- 探索N6Methyladenosine (m6A) 修饰对DNA-PKcs表达和anlotinib耐药性的影响.
主要方法:
- 生物信息学分析,免疫光和共免疫沉以研究蛋白质相互作用.
- 双露西法酶和甲基化RNA免疫沉 (MeRIP) 试验用于m6A修饰检测.
- 在位杂交 (FISH) -IF和RNA免疫沉 (RIP) 分析mRNA-蛋白质相互作用.
主要成果:
- 在对anlotinib耐药的骨髓瘤细胞中观察到DNA-PKcs水平的增加;它的沉默使细胞对anlotinib敏感.
- DNA-PKcs与Beclin-1相互作用,调节其无处不在,并影响anlotinib诱导的自.
- 甲基转移酶样3 (METTL3) 通过m6对PRKDCmRNA的修饰来积极调节DNA-PKcs表达,增强了对anlotinib的耐药性.
- YTH N6-甲基氨酸RNA结合蛋白1 (YTHDF1) 识别了m6甲基化PRKDCmRNA,放大了DNA-PKcs表达.
结论:
- 通过调节保护性自,DNA-PKcs促进了对anlotinib的耐药性.
- METTL3诱导的m6PRKDCmRNA的修改增强了DNA-PKcs的表达,有助于抵抗.
- 针对METTL3/PRKDC通路提供了一个潜在的治疗策略,以克服骨髓瘤中的anlotinib耐药性.
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