NSC95397是一种新的HIV-1延迟逆转剂
Randilea Nichols Doyle1, Vivian Yang1,2, Yetunde I Kayode3
1Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California, USA.
bioRxiv : the preprint server for biology
|June 9, 2023
概括
研究人员发现NSC95397,一种新型的延迟逆转剂 (LRA),可重新激活HIV-1. 这种化合物与现有的LRA协同作用,并可能针对新的途径来帮助治愈HIV-1.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 药物发现 药物发现 药物发现
背景情况:
- 潜伏的病毒储备是治愈HIV-1的主要障碍.
- "杀"策略旨在重新激活潜伏的病毒并消除受感染的细胞.
- 现有的延迟逆转剂 (LRA) 有局限性,需要新的治疗化合物.
研究的目的:
- 识别和描述可以逆转HIV-1潜伏的新型化合物.
- 评估新LRA与现有治疗方法的协同作用潜力.
- 阐明新型LRAs作用背后的分子机制.
主要方法:
- 大约4250个化合物的高通量选,以确定潜在的LRA.
- 验证NSC95397在各种模型中重新激活潜伏病毒转录和蛋白质表达的能力.
- 在正常和缺氧条件下与NSC95397和已知的LRA进行并发治疗测定.
- 对染色质可访问性和大量RNA测序的分析,以评估全球转录性变化.
- 途径分析以确定由NSC95397.7调节的细胞过程.
主要成果:
- 从一个大复合屏幕上,NSC95397被确定为一种强大的LRA.
- 在各种细胞模型中,NSC95397有效地重新激活了潜在的病毒转录和蛋白质表达.
- 当NSC95397与现有的LRA结合使用时,即使在低氧条件下,也观察到显著的协同效应.
- NSC95397在全球范围内没有增加染色质可访问性或细胞转录.
- 观察到代谢,细胞生长和DNA修复途径的下调,这表明了新的作用机制.
结论:
- NSC95397是一种新型LRA,有可能重新激活潜伏的HIV-1.
- NSC95397与已知的LRA显著协同作用,提供了一个有前途的组合治疗方法.
- 该化合物可能通过以前未知的途径作用,涉及代谢和细胞生长调节,以调节HIV-1潜伏.
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