艾滋病毒-1感染细胞的自失调增加了细胞外囊的释放,并促进了TLR3激活
Catherine DeMarino1,2, Maria Cowen1,2, Anastasia Williams1
1Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Discovery Hall Room 182, 10900 University Blvd., Manassas, VA 20110, USA.
Viruses
|April 27, 2024
概括
针对HIV-1的联合抗逆转录病毒疗法 (cART) 可能会增加有害的细胞外囊释放,从而导致神经炎症. 新的TARRNA结合化合物显示出降低这种炎症的潜力,以改善与艾滋病毒相关的神经认知障碍 (HAND) 治疗.
科学领域:
- 神经科学是一个神经科学.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 艾滋病毒-1感染可能导致艾滋病毒相关的神经认知障碍 (HAND),其特点是神经功能损害和炎症.
- 虽然联合抗逆转录病毒疗法 (cART) 减少了HAND,但低水平的病毒转录仍然存在,导致病毒产物积累.
- 感染细胞在细胞外囊泡 (EV) 中释放这些产品,如TAR RNA,可能会损害邻近的细胞.
研究的目的:
- 研究cART如何影响HIV-1感染细胞的自和EV释放.
- 确定来自HIV-1感染髓状细胞的EVs在中枢神经系统 (CNS) 病原发生中的作用.
- 为了确定针对EV介导炎症的治疗化合物.
主要方法:
- 证明了cART对自解调的贡献,并增加了HIV-1感染细胞中的EV释放.
- 评估了来自HIV-1感染髓状细胞的EVs对中枢神经系统病变的影响,重点关注Toll-like受体3 (TLR3) 激活.
- 对HIV-1 TARRNA结合化合物进行选,这些化合物可以降低TLR激活.
主要成果:
- cART可以去调节自并增加HIV-1感染细胞的EV释放.
- 来自HIV-1感染髓状细胞的EVs通过EV介导的TLR3激活对中枢神经系统的病原产生作出贡献.
- 确定了三种TARRNA结合化合物 (103FA,111FA,Ral HCl),这些化合物可以降低TLR激活.
结论:
- 病毒产品的EV包装,cART可能会恶化,可能会导致治疗HIV-1患者的慢性中枢神经系统炎症.
- 针对EV介导的TLR3激活,为缓解HAND发病率提供了一个新的治疗策略.
- 对这些TAR RNA结合化合物的进一步研究可能会导致改善HAND的治疗方法.
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