类似干细胞的CD8+ T细胞在HBV/HIV同时感染时保留HBV特异性反应
Jay Preechanukul1, Aljawharah Alrubayyi2, Bo Sun3
1Division of Infection and Immunity, University College London, London, UK.
medRxiv : the preprint server for health sciences
|April 16, 2025
概括
在治疗中患有慢性HBV/HIV联合感染的人表现出强大的CD8+ T细胞反应. 这些细胞保留了类似干细胞的特性,对于免疫恢复和慢性感染中有效的抗病毒功能至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- 慢性乙型肝炎 (HBV) 感染显著影响人类免疫缺陷病毒 (HIV) 感染者.
- 功能治愈研究往往排除了同时感染的患者,限制了对免疫反应的理解.
- 调查CD8+T细胞概况对于开发HBV/HIV联合感染的治疗策略至关重要.
研究的目的:
- 为了比较HBV单一感染和HBV/HIV联合感染中的CD8+T细胞概况.
- 评估长期抗病毒治疗对病毒特异性T细胞反应的影响.
- 为共感染个体提供免疫恢复策略的信息.
主要方法:
- 对61名接受抑制性抗病毒治疗的参与者 (HBV,HBV/HIV,HIV) 的CD8+T细胞反应的分析.
- 对转录基因和蛋白质基因资料的评估,重点关注T细胞耗尽标志物.
- 评估CD8+ T细胞的病毒特异性功能能力.
主要成果:
- 同时感染显示出明显的基因特征,具有TCR信号和祖先耗尽标记 (Tpex) 的上调.
- 前体耗尽的TCF-1+CD127+PD-1+CD8+T细胞在联合感染中更频繁,与HBV单一感染中的终极耗尽细胞不同.
- 同时感染表现出更强大的,多功能HBV特异性反应,与较低的HBsAg和更长的治疗持续时间有关.
结论:
- 得到良好控制的HBV/HIV联合感染可保持强大的CD8+ T细胞反应,具有干细胞状的特性.
- 早期的抗逆转录病毒疗法有利于免疫恢复和抗病毒功能.
- 针对慢性病毒感染的不同患者群体,需要量身定制的免疫调节疗法.
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