通过PRMT5依赖的对称二甲基化调节RORα稳定性
Gaofeng Xiong1,2,3,4, Brynne Obringer5, Austen Jones5
1Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
Cancers
|May 25, 2024
概括
蛋白质氨酸N-甲基转移酶5 (PRMT5) 稳定了与视网酸受体相关的孤儿受体α (RORα) 蛋白. PRMT5调节RORα的稳定性,影响乳腺癌细胞的入侵和迁移.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 网红酸受体相关的孤儿受体α (RORα) 是一种瘤抑制剂,在乳腺癌中经常丢失.
- 在乳腺细胞中调节RORα表达的机制尚未完全理解.
- 蛋白质氨酸N-甲基转移酶5 (PRMT5) 影响蛋白质的稳定性.
研究的目的:
- 为了研究PRMT5是否调节RORα.
- 阐明PRMT5影响RORα的机制.
主要方法:
- 免疫沉和GST拉下测试以评估RORα-PRMT5相互作用.
- 使用RORα和PRMT5载体 (表达或沉默) 的HEK293FT细胞转染.
- 循环赫西米德追逐试验以确定RORα蛋白的稳定性.
主要成果:
- PRMT5直接与RORα结合,特别是甲基化其DNA结合域.
- PRMT5增强了RORα蛋白的稳定性;PRMT5沉默加速了RORα的降解.
- 乳腺细胞中PRMT5沉默降低了RORα,促进了上皮细胞-介质细胞过渡和入侵.
- 乳腺细胞中的PRMT5过度表达增加了RORα,抑制了入侵.
结论:
- 通过直接相互作用和甲基化,PRMT5稳定了RORα蛋白.
- 通过PRMT5调节RORα,影响乳腺癌细胞的行为.
- 这项研究揭示了PRMT5.5对RORα调节的一种新机制.
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