人类急性和慢性免疫缺陷病毒中的线粒体DNA片段动力学:来自人类和非人类灵长类动物模型的见解
Jing Sun1, Lolita S Nidadavolu2, Hsing-Yu Hsu1
1Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.
The Journal of infectious diseases
|January 20, 2026
概括
循环无细胞线粒体DNA (ccf-mtDNA) 水平在HIV-1 (PWH) 患者中较低,并且随着疾病的晚期而下降. 在SIV感染的NHP中,ART治疗也减少了ccf-mtDNA.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 生物化学 生物化学
背景情况:
- 循环的无细胞线粒体DNA (ccf-mtDNA) 片段与HIV-1 (PWH) 患者的并发症有关.
- 在急性和慢性艾滋病毒感染期间,ccf-mtDNA的动态尚不清楚.
研究的目的:
- 研究艾滋病毒-1感染者和未感染者中ccf-mtDNA水平的纵向变化.
- 为了检查非人类灵长类动物 (NHPs) 中的ccf-mtDNA动态,在类免疫缺陷病毒 (SIV) 感染和抗逆转录病毒治疗 (ART) 后.
主要方法:
- 从两个人类队列 (N=890和N=427) 的血清中随着时间的推移量化了短和长ccf-mtDNA片段.
- 利用混合效应线性回归来分析ccf-mtDNA,HIV状态,CD4细胞计数和病毒载荷之间的关联.
- 在SIV感染和ART感染之前和之后的NHP中评估ccf-mtDNA水平.
主要成果:
- 与没有艾滋病毒的人 (PWoH) 相比,PWH表现出明显较低的短和长ccf-mtDNA水平.
- 在PWH中较低的CD4T细胞计数与ccf-mtDNA的进一步减少相关.
- 在NHP中,ccf-mtDNA在SIV感染后增加,在ART开始后减少,长片段在6个月内显著下降.
结论:
- 慢性艾滋病毒和接受治疗的SIV感染与ccf-mtDNA的减少有关,特别是在晚期疾病中.
- 需要进一步的研究来了解ccf-mtDNA在PWH免疫激活,炎症和并发症中的作用.
- ccf-mtDNA可以作为PWH中这些过程的潜在生物标志物.
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