MYC乙化氨酸残留物驱动瘤细胞转化,并调节选择的遗传程序,以实现细胞粘附独立的生长和存活
Matthew Hurd1, Jeffrey Pino1, Kay Jang1
1Department of Biochemistry, University of California Riverside, Riverside, California 92521, USA.
Genes & development
|October 18, 2023
概括
通过p300和GCN5的MYC乙化是可逆的,并影响MYC蛋白的稳定性和功能. 特定的乙化素 (AcK) 位点对于MYC驱动的癌细胞转化和瘤发生至关重要.
科学领域:
- 瘤性转录因子的转录因子
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- MYC是一个关键的瘤转录因子.
- 由p300和GCN5对MYC的乙化已知,但其功能意义尚不清楚.
- 特定乙化氨酸 (AcK) 残留物在MYC功能中的作用尚不清楚.
研究的目的:
- 为了研究MYC乙化在特定氨酸残留物的功能意义.
- 确定MYC乙化对其稳定性,基因调节和瘤活动的影响.
- 探索针对MYC AcK位点进行癌症治疗的潜力.
主要方法:
- 在恶性和非恶性细胞中分析MYC乙化.
- 位点定向突变发生 (lysine-to-arginine替代) 来评估AcK位点的功能.
- 评估MYC的稳定性,扩散,结独立生长和瘤发生活性在体外和体内.
主要成果:
- 主要部位的MYC乙化 (K148{149},K157{158},K323) 是可逆的,并通过瘤性MYC过度表达而增强.
- 乙化对MYC稳定性产生差异性影响,并控制细胞粘附,细胞亡和新陈代谢等过程中的基因特异性功能.
- 个别的AcK位点对于MYC介导的恶性转变,结独立生长和体内瘤发生是必不可少的.
结论:
- MYC乙化是一种影响MYC稳定性和功能的动态调节机制.
- 特定的AcK位点在MYC的致癌活动中发挥着关键的,独特的作用.
- 针对MYC AcK特定位点的信号通路,为MYC驱动的癌症提供了潜在的治疗策略.
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