在癌症中,RNA G-四重复体会导致eIF4A依赖的癌基因翻译
Andrew L Wolfe1, Kamini Singh2, Yi Zhong3
11] Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA [2] Weill Cornell Graduate School of Medical Sciences, New York, New York 10065, USA [3].
Nature
|August 1, 2014
概括
细胞启动因子4A (eIF4A) RNA螺旋酶驱动癌症中的基因表达. 抗癌化合物Silvestrol针对这种机制,为白血病和其他癌症提供治疗潜力.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 在RNA生物学,RNA生物学.
背景情况:
- coprotein表达的转化控制是癌症发展的关键因素.
- 细胞启动因子4A (eIF4A) RNA酶在瘤发生过程中发挥作用.
- 西尔维斯和相关化合物通过向特定的细胞机制,表现出抗癌性质.
研究的目的:
- 阐明癌症中依赖eIF4ARNA基酶的转化控制机制.
- 了解eIF4A如何促进瘤发生和silvestrol的抗癌作用.
- 识别由eIF4A.调节的特定RNA特征和转录.
主要方法:
- 转录组规模的核糖体足迹 (TSRF) 用于识别eIF4A依赖的转录.
- 在体外和体内研究中使用小鼠和人类白血病细胞进行了实验.
- 分析的重点是5'非翻译区域 (UTR) 序列,包括RNA G-四重复结构.
主要成果:
- eIF4A促进T细胞急性淋巴细胞白血病的发展,对其维持至关重要.
- 席尔维斯特对eIF4A的抑制显示出对白血病细胞有强大的治疗作用.
- 关键的eIF4A-依赖转录包括瘤基因,超强增强器相关的转录因子和表观遗传调节器,通常具有5' UTR G-四重复基因.
结论:
- eIF4ARNA基酶是癌症瘤基因转化的一个关键调节器.
- 针对eIF4A与silvestrol等化合物提供了对癌症的有希望的治疗策略.
- 特定癌症相关基因的5' UTRs具有依赖eIF4A.的可针对性脆弱性.
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