BRD9作为甲基氨酸读取器,调节AKT-EZH2信号传输
Shasha Yin1, Charles Brobbey1, Lauren E Ball2
1Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.
Science advances
|April 25, 2025
概括
含有原体的蛋白9 (BRD9) 意外地在AKT1.1上读取了甲基氨酸标记. 这个发现揭示了BRD9的存在.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 蛋白质的甲基化,特别是氨酸甲基化,是细胞功能的关键调节剂.
- 已经确定了AKT1蛋白在氨酸-391 (R391) 的甲基化,但其特定的读者蛋白仍然未知.
- 含odomain的蛋白9 (BRD9) 被称为乙化素的读取器.
研究的目的:
- 为了确定AKT1甲基化在R391.1.的读者蛋白质.
- 研究BRD9在AKT1信号传递和瘤发生中的功能作用.
- 探索向BRD9和EZH2在癌症中的治疗潜力.
主要方法:
- 生物化学测试以表征蛋白质与蛋白质相互作用.
- RNA测序以分析转录的变化.
- 在体外和体内癌症模型评估瘤生长和扩散.
主要成果:
- BRD9通过其原蛋白意外地识别了AKT1的甲基化R391.
- 破坏BRD9的甲基氨酸读取器功能会抑制AKT的激活和瘤发生.
- BRD9和AKT共同调节了一种转录程序,涉及增强器的胃同类素2 (EZH2) 和基因素-3素-27甲基化.
- 联合抑制BRD9和EZH2对抑制癌细胞增殖和瘤生长产生协同作用.
结论:
- BRD9具有针对AKT1.1的新型甲基氨酸读取器功能.
- 向BRD9为癌症提供了潜在的治疗策略.
- 与BRD9和EZH2抑制剂的联合治疗显示出显著的抗瘤作用.
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