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Raquel Cuella-Martin¹, Samuel B Hayward¹, Xiao Fan²

¹Department of Genetics and Development, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY 10032, USA.

|February 19, 2021

概括

研究人员使用CRISPR基编辑屏幕发现了DNA损伤反应 (DDR) 基因的2000多种变异. 这些发现揭示了与癌症和遗传疾病相关的DDR基因和突变的新功能.

科学领域:

遗传学
分子生物学
癌症研究

背景情况:

DNA损伤反应 (DDR) 基因突变损害基因组完整性,增加癌症和遗传疾病的风险.
了解DDR基因功能对于疾病研究至关重要.

研究的目的:

通过基于CRISPR的查来识别DDR基因中的新变异.
研究这些变异对细胞健康和基因组稳定性的功能影响.
发现新的DDR基因功能及其在人类疾病中的作用.

主要方法:

使用CRISPR依赖的细胞基编辑屏幕.
在86个DDR基因中生成核酸变体的sgRNAs超过2000个.
在诱导DNA损伤时进行了细胞健康测试.

主要成果:

在86个DDR基因中发现了2000多个变异,
在53BP1的Tudor域中发现了功能损失和增益突变,影响USP28结合.
鉴定了TRAIP变体,该变体定义了一个对拓酶I抑制具有耐药性的域.
发现了具有相反表型的ATM激酶突变和CHK2功能丧失突变.

结论:

这项研究为发现DDR基因功能提供了宝贵的资源.
这些已识别的变体提供了关于DDR基因在癌症和遗传疾病中的作用的见解.
对这些DDR变种的进一步研究可以加快对人类疾病的研究.

关键词:

53BP1 没有机器人 BE3基础编辑器 CHK2 其他依赖CRISPR的基础编辑对DNA损伤的反应关于TRAIP的临床相关的变种不确定的变种

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