抑制IRAK1阻断了来自微质的HIV-1RNA介导的促炎性细胞因子反应
Grant R Campbell1, Pratima Rawat2,3, Carmen Teodorof-Diedrich2
1Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, USA.
The Journal of general virology
|May 31, 2023
概括
抑制IL-1受体相关激酶1 (IRAK1) 减少与人类免疫缺陷病毒 (HIV) 相关的神经认知障碍 (HAND) 相关的炎症. 这针对关键途径,为艾滋病毒感染者认知障碍提供了潜在的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 人类免疫缺陷病毒 (HIV) 相关的神经认知障碍 (HAND) 仍然是艾滋病毒感染者 (PLWH) 的重大临床挑战,即使有有效的抗逆转录病毒疗法 (ART).
- 艾滋病毒的中枢神经系统持久性,高水平的促炎细胞因子和活化的微质细胞有助于HAND的发病.
- 收费类受体 (TLR) 7和TLR8识别HIVRNA,启动对HAND发育至关重要的促炎信号级联.
研究的目的:
- 研究IL-1受体相关激酶1 (IRAK1) 在TLR7和TLR8介导的HIVRNA炎症反应中的作用.
- 为了确定抑制IRAK1是否可以抑制涉及HAND的促炎途径.
主要方法:
- 利用遗传和药理方法来抑制IRAK1.1.
- 评估了IRAK1抑制对IRAK1酸化和无处不在的作用的影响.
- 研究了招募TRAF6和TAK1复合体到IRAK1.
- 测量了下游的促炎性细胞因子和化学因子释放.
主要成果:
- 抑制IRAK1有效地抑制了由HIVRNA触发的TLR7和TLR8依赖的炎症反应.
- 抑制阻止了IRAK1的酸化和无处不在.
- 将TRAF6和TAK1复合体招募到IRAK1的过程被阻止了.
- 下游信号被抑制,导致促炎性细胞因子和化学因子的释放减少.
结论:
- 伊拉克1是艾滋病毒RNA激活的TLR7/8信号通路的关键调解者.
- 向IRAK1代表了一种有前途的治疗策略,以减轻HAND中的神经炎症和认知障碍.
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