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通过对异位基因特定的表观基因组编辑来向瘤性TERT促进体变异

Alexandra G Kouroukli¹, Nivethika Rajaram², Pavel Bashtrykov²

¹Institute of Human Genetics, Ulm University and Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany.

Clinical epigenetics

|November 23, 2023

概括

在细胞模型中,异位基因特异性表观基因组编辑 (ASEE) 成功地使癌症驱动的TERT促进子突变沉默. 这种方法为主导性瘤基因失活提供了有针对性的策略,与当前的癌症疗法相比,可能会减少副作用.

科学领域:

基因组学就是基因组学.
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
癌症生物学癌症生物学

背景情况:

通过基因组改变主导性瘤基因激活驱动癌症.
沉默这些癌基因是一种有前途的癌症治疗策略.
以异位基因特定的表观基因组编辑 (ASEE) 以一种异位基因特定的方式减少基因转录.

研究的目的:

通过准TERT促进体变体,研究ASEE在癌症治疗中的潜力.
探索ASEE在异位基因特异性沉默瘤性TERT异位基因中的有效性.

主要方法:

在使用sgRNA引导的dCas9-DNMT3A-3L复合体的癌细胞系 (Hep-G2,A-549) 中向TERT促进体变异.
引入了异位基因特异性DNA甲基化以沉默致癌的TERT等位基因.
量化CpG甲基化收益和TERTRNA表达变化.

主要成果:

53%的癌症细胞系中的TERT促进子序列含有异合变异.
在目标TERT促销基因上实现了特定的DNA甲基化 (高达76%的增益).
在ASEE之后,在Hep-G2细胞中证明了TERT RNA表达的减少.

结论:

在癌症模型中,ASEE成功地沉默了致癌性TERT基因.
这种方法证明了通过ASEE实现主导性瘤基因失活的可行性.
ASEE 提出了一种新的治疗策略,与诸如端粒酶抑制等现有治疗方法相比,具有潜在的优势,特别是在尽量减少不良影响方面.

关键词:

基因基因特异性表观基因组编辑 (ASEE)癌症癌症癌症癌症通过DNA甲基化.单核酸变体的单核酸变体这就是为什么 TERTTT.端粒酶逆转录酶的作用

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