一个基于CRISPR的快速DNA重新定位策略和HSV-1的早期核内生命
Juan Xiang1, Chaoyang Fan1, Hongchang Dong1
1The Centre for Infection and Immunity Studies, School of Medicine, Shenzhen Campus of Sun Yat-sen Univeristy, Sun Yat-sen University, Shenzhen, China.
eLife
|September 13, 2023
概括
一个基于CRISPR的新工具,CRISPR-nuPin,可以快速将病毒DNA重置到核外围. 这种操纵揭示了简单疹病毒1 (HSV-1) 的早期核外围定位抑制了病毒基因表达和生长.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 病毒DNA基因组在宿主核中的定位会影响感染结果.
- 染色体构造捕获 (3C) 技术为病毒基因组与宿主染色体相互作用提供了洞察力.
- 操纵工具对于理解病毒DNA亚核位置和病变发生之间的因果关系至关重要.
研究的目的:
- 开发一种工具,使病毒DNA能够快速,可诱导地迁移到特定的亚核区.
- 研究疹简单病毒1 (HSV-1) 早期亚核局部化对病毒基因表达和复制的作用.
主要方法:
- 开发一种可诱导的基于CRISPR的双组件平台 (CRISPR-nuPin),用于将染色体外DNA (5kb到170kb) 迁移到核外围.
- 应用CRISPR-nuPin研究简单疹病毒1 (HSV-1) 感染动态.
主要成果:
- 与核外围结合的病毒基因组表现出增加的质子抑制修饰,增强的转录沉默和抑制生长.
- 在感染后1小时将HSV-1基因组迁移到核外围,促进了病毒基因转录 ("逃脱"效应).
- 早期的ICP0积累是足够的,但不是必要的",逃跑"效应,亚核定位仅在早期感染期间至关重要.
结论:
- CRISPR-nuPin是一种强大的工具,用于剖析宿主核中的病毒DNA的时空动态.
- 早期核外围定位HSV-1基因组导致转录沉默和生长抑制.
- CRISPR-nuPin策略广泛适用于研究其他DNA病毒.
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