基因素脱乙酶网络调节HIV感染细胞中的表观遗传重编程和病毒沉默
Jackson J Peterson1, Catherine A Lewis1, Samuel D Burgos1
1Department of Microbiology and Immunology, University of North Carolina (UNC) School of Medicine, Chapel Hill, NC 27514, USA; University of North Carolina HIV Cure Center, Institute of Global Health and Infectious Diseases, Chapel Hill, NC 27514, USA.
基斯脱乙酶 (HDAC) 酶对于维持潜伏的HIV储存器至关重要. 向HDAC1/2或HDAC3可以防止HIV潜伏期,而抑制所有三种可能会逆转它.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 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:
- 一个持久的HIV-1感染的CD4 T细胞储备,尽管抗逆转录病毒治疗,阻止治愈.
- 了解艾滋病毒潜伏的机制对于开发治愈策略至关重要.
研究的目的:
- 调查基因组脱乙酶 (HDAC) 在潜伏HIV-1感染的出现和维持中的作用.
- 探索HDAC抑制剂 (HDACi) 预防或逆转HIV潜伏的潜力.
主要方法:
- 利用向的HDAC分子,一个HDAC3指导的PROTAC和CRISPR-Cas9淘汰实验.
- 分析了包括H3K9ac和H3K9me3在内的表观遗传修饰,在前病毒LTR促进剂.
- 评估了HDAC抑制对与延迟相关的记忆T细胞特征的影响.
主要成果:
- 需要HDAC1/2和HDAC3活动才能出现潜伏感染的CD4T细胞.
- 单独针对HDAC1/2或HDAC3可以预防HIV潜伏期.
- 抑制所有三个HDAC酶 (HDAC1/2和HDAC3) 是必要的延迟逆转.
- HDACi治疗会影响与前病毒性持续性相关的记忆T细胞特征.
- 延迟预防与预病毒LTR增加的H3K9ac和减少的H3K9me3相关,表明依赖HDACs的表观遗传沉默机制.
结论:
- HDAC酶在建立和维持潜伏的HIV-1感染方面发挥着至关重要的作用.
- 针对特定的HDAC提供了预防HIV潜伏的潜在策略.
- 对HDAC抑制剂的进一步研究对于旨在治愈HIV的临床应用是有必要的.
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