艾滋病毒-1 Tat介导的人类穆勒质细胞衰老 涉及内分泌网膜压力和失调的自
Uma Maheswari Deshetty1, Nivedita Chatterjee2, Shilpa Buch1
1Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA.
Viruses
|June 27, 2024
概括
艾滋病毒-1 Tat暴露会诱导内细胞网膜 (ER) 应激,并破坏Müller质细胞的自,导致细胞衰老. 抑制ER压力可以减少这些影响,这表明ER压力是HIV-1相关衰老的关键.
科学领域:
- 神经科学是一个神经科学.
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 抗逆转录病毒疗法可以改善艾滋病毒的结果,但并发病症仍然存在.
- 细胞内膜网膜 (ER) 的压力与HIV-1病原发生有关.
- 在HIV-1诱导的细胞衰老中ER压力的作用尚不清楚.
研究的目的:
- 研究ER压力和自对HIV-1 Tat诱导的细胞衰老的影响.
- 为了在MIO-M1人类Müller质细胞系中研究这些影响.
主要方法:
- 这些细胞暴露于HIV-1 Tat.
- 分析了ER压力,自和衰老标志物的表达 (vimentin,BiP,p-eIF2α,LC3,Beclin-1,p62,p21).
- 使用了西式涂抹和SA-β-gal染色.
- 细胞先用ER应激抑制剂4-PBA或自抑制剂3-MA进行预处理.
主要成果:
- 艾滋病毒-1 Tat暴露增加了维门丁,ER压力,自和p21标记物.
- 4-PBA预治疗降低了ER压力,衰老和自标志物.
- 3-MA治疗前减少了自和衰老标志物,但没有减少ER压力标志物.
结论:
- 艾滋病毒-1 Tat暴露会触发ER压力,自失调,以及Müller质细胞的衰老.
- 在这种情况下,ER压力似乎是衰老表型的关键发起者.
- 针对ER压力可能为HIV-1相关的眼部并发症提供治疗潜力.
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