通过PRMT1介导的甲基化调节了MLL2的稳定性和基因表达
Dongju An1, Jihyun Kim1, Byul Moon2
1Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea.
Nucleic acids research
|December 19, 2024
概括
蛋白甲基转移酶MLL2 (KMT2B) 和PRMT1相互作用调节基因表达. PRMT1甲基化稳定MLL2,影响细胞功能,如迁移和入侵.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因规则 基因规则
背景情况:
- 细胞转录是由多个转录因子的相互作用精确调节的.
- 蛋白甲基转移酶在调节蛋白质功能和稳定性方面发挥着至关重要的作用.
研究的目的:
- 研究MLL2 (KMT2B) 和PRMT1在基因表达调节中的相互作用和集体功能.
- 阐明PRMT1影响MLL2稳定性和活性的机制.
主要方法:
- 同免疫沉以确认蛋白质与蛋白质相互作用.
- 位点定向的突变发生,以确定MLL2上的甲基化位点.
- 西方涂抹用于评估蛋白质无处不在和稳定性.
- 染色体记者基因测定用于测量转录活性.
- RNA测序 (RNA-seq) 用于分析基因表达变化.
- 基因枯竭研究 (例如,siRNA或shRNA) 以评估功能后果.
主要成果:
- MLL2 (KMT2B) 和PRMT1直接相互作用,PRMT1与MLL2内在无序的N端区域结合.
- PRMT1在MLL2的RGG/RG基因中甲基化氨酸残留物,降低MLL2的多无处不在和提高其稳定性.
- 通过PRMT1介导的MLL2甲基化以甲基化依赖的方式协同刺激基因表达.
- 联合调节的基因参与细胞膜和细胞外矩阵功能.
- 无论是MLL2还是PRMT1的耗尽都会影响细胞迁移和侵入.
结论:
- 通过PRMT1介导的甲基化是调节MLL2蛋白稳定的关键机制.
- MLL2-PRMT1复合体集体调节基因表达,影响细胞功能,对迁移和入侵至关重要.
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