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在CD4+T细胞中HIV-1潜伏的重新激活期间的Epitranscriptomic m⁶A修改

Tarun Mishra¹, Stacia Phillips¹, Yutao Zhao²

¹Department of Microbiology and Immunology, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA.

|October 7, 2024

概括

RNA N6 - 甲基氨酸 (m6A) 修饰对于逆转HIV-1潜伏时间至关重要. 再激活潜伏的HIV-1会增加细胞RNAm6A水平,并且抑制m6A编辑器会减少重新激活,突出显示m6A.

科学领域:

分子生物学分子生物学
病毒学病毒学
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:

有效的抗逆转录病毒疗法可以减少HIV-1病毒载荷,但不能消除潜在感染的CD4+T细胞.
甲基氨酸 (m6A) RNA修饰在HIV-1感染中起作用,影响病毒RNA的稳定性,转化,拼接和免疫抑制.

研究的目的:

调查m6A在调节HIV-1潜伏再激活中的作用.
为了确定细胞RNAm6A水平在HIV-1潜伏逆转期间是否发生变化.

主要方法:

使用Jurkat T细胞系衍生的HIV-1潜伏模型 (J-Lat细胞) 和初级CD4+T细胞.
在延迟逆转过程中测量了总细胞RNA中的m6A水平.
采用m⁶A特定的测序来识别差异修饰的细胞RNA.
执行了m⁶A写作者的淘汰,并使用了m⁶A写作抑制剂来评估功能影响.

主要成果:

在J-Lat细胞中,HIV-1潜伏逆转导致总细胞RNA m6A水平显著,暂时增加.
在m⁶A的升调发生在m⁶A修饰酶 (写字器和擦拭器) 的表达没有显著变化的情况下.
对m⁶A编辑器的淘汰和使用m⁶A编辑器抑制剂的治疗大大降低了HIV-1的重新激活.
鉴定出特定的细胞RNA在HIV-1重激活过程中被差异化m6A-修改,并通过敲击验证了它们的作用.

结论:

细胞RNA m⁶ 修改是HIV-1潜伏逆转的一个关键因素.
向m6 一种修改通过重新激活潜伏病毒为HIV-1治愈提供了潜在的策略.

关键词:

逆转HIV-1潜伏时间在J-Lat细胞中.这就是POLR3H.在RNA m6A修改的过程中.在TUG1上,我们将在TUG1上工作.主要的CD4+T细胞.

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