艾滋病毒-1复制需要对展开的蛋白质反应的最佳激活
Anjali Tripathi1, Kruthika Iyer1, Debashis Mitra1
1National Centre for Cell Science, Pune, India.
FEBS letters
|November 20, 2023
概括
展开的蛋白质反应 (UPR) 被HIV-1激活,影响病毒复制. 调节UPR或内质网膜 (ER) 的压力影响HIV-1,建议治疗点.
科学领域:
- 分子生物学分子生物学
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 展开的蛋白质反应 (UPR) 是由错误折叠的蛋白质激活的细胞应激途径.
- 在各种疾病中观察到UPR激活,包括病毒感染.
- 在HIV-1感染和复制中UPR的具体作用尚未完全理解.
研究的目的:
- 为了研究HIV-1对UPR通路的调节.
- 阐明UPR在HIV-1复制中的功能相关性.
- 探索针对UPR或ER压力的治疗策略,以抑制HIV-1.
主要方法:
- 在HIV-1感染细胞中分析UPR信号通路 (IRE1,PERK,ATF6).
- 对PERK和ATF6.6进行基因淘汰实验.
- 评估HIV-1长终端重复 (LTR) 驱动的基因表达.
- 检测HSPA5在HIV-1p24蛋白质稳定性中的内等质网膜 (ER) 护卫者的作用.
- 用化学UPR诱导剂和ER压力抑制剂对细胞进行治疗.
- 对1型干扰素反应和病毒复制的评估.
主要成果:
- 艾滋病毒-1 激活了 IRE1,PERK 和 ATF6 UPR 信号通路.
- 淘汰PERK和ATF6可以减少HIV-1LTR驱动的基因表达.
- 在ER陪伴者HSPA5保护HIV-1p24从蛋白质体降解.
- 化学UPR过度刺激增强了1型干扰素反应,并表现出抗HIV活性.
- 通过ER应激抑制,可以减少HIV-1的复制.
结论:
- 一个最佳的UPR激活对于高效的HIV-1复制至关重要.
- 过度的UPR刺激和ER压力抑制都导致HIV-1抑制.
- 准UPR和ER压力路径为控制HIV-1感染提供了潜在的治疗途径.
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