表观遗传药物对CRISPR-Cas9编辑的染色体上下文依赖的影响
Ruben Schep1,2, Max Trauernicht1,2, Xabier Vergara1,2,3
1Oncode Institute, The Netherlands.
Nucleic acids research
|July 2, 2024
概括
表观遗传药物可以改变CRISPR-Cas9基因编辑效率和结果. 这项研究表明药物效应因染色体位置而异,为向CRISPR改进提供了资源.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 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:
- CRISPR/Cas9基因编辑效率和修复结果受到当地的染色质状态的影响.
- 已经探索了表观遗传药物来增强CRISPR编辑,但由于药物向分布异质,它们的有效性可能会因基因组位点而异.
研究的目的:
- 系统地研究160种表观遗传药物在CRISPR/Cas9编辑上的染色质上下文依赖性.
- 根据局部染色体环境识别调节CRISPR编辑效率和/或修复通路使用的药物.
主要方法:
- 利用一个具有19个稳定集成的记者的人类细胞系来诱导多种染色体环境中的双链断裂.
- 通过测序突变特征来测量CRISPR/Cas9编辑效率和修复路径使用情况.
- 分析了160种表观遗传药物对编辑结果的影响.
主要成果:
- 确定了58种药物,可显著调节CRISPR/Cas9编辑效率和/或以染色体依赖的方式修复结果.
- 发现了增强异色染色体 (例如PCI-24781) 或euchromatin/H3K27me3区域 (例如apicidin) 编辑的特定的基因素脱乙酶抑制剂.
- 证明大多数表观遗传药物会以取决于局部染色体环境的方式改变CRISPR编辑.
结论:
- 克里斯普尔/卡斯9编辑对染色质环境高度敏感,表观遗传药物表现出特定于位点的效应.
- 这项研究为选择和应用表观遗传药物提供了宝贵的资源,以选择性地改善CRISPR编辑在所需的基因组位置.
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