肝炎D感染诱导IFN-β介导的NK细胞激活和TRAIL依赖的细胞毒性
Christopher Groth1, Jovana Maric1, Irene Garcés Lázaro1
1Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Frontiers in immunology
|December 25, 2023
概括
自然杀手 (NK) 细胞被D型肝炎病毒 (HDV) 感染激活,可以消除受感染的肝细胞. 这一发现突出了NK细胞作为新型抗病毒疗法针对HBV/HDV联合感染的潜在点.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 病毒学 病毒学
背景情况:
- 乙型肝炎病毒 (HBV) 和乙型肝炎病毒 (HDV) 的联合感染导致严重的病毒性肝炎,治疗选择有限.
- 自然杀手 (NK) 细胞是对抗病毒感染的先天免疫反应的关键参与者.
研究的目的:
- 为了研究NK细胞的潜力,以向感染HDV的肝细胞.
- 探索NK细胞激活和功能的机制,在HDV感染的背景下.
主要方法:
- 感染HDV的肝瘤细胞系和人类NK细胞的共同培养模型.
- 流细胞计,转录组分析和细胞因子免疫试验以评估NK细胞激活.
- 编辑CRISPR/Cas9基因以验证HBV/HDV患者NK细胞的机制和分析.
主要成果:
- 在与HDV感染细胞共培养时,NK细胞上调激活标志物和干扰素刺激基因 (ISG),包括TRAIL.
- 通过TRAIL-TRAIL-R2轴,NK细胞产生IFN-γ,并通过TRAIL-TRAIL-R2轴消除HDV感染细胞.
- 来自感染细胞的IFN-β增强了NK细胞的活动,同时感染患者的NK细胞被激活.
结论:
- NK细胞激活是高强度病毒感染的一个特征.
- NK 细胞具有通过 TRAIL/TRAIL-R2 途径消除 HDV 感染的肝细胞的能力.
- NK细胞是开发HBV/HDV联合感染的新抗病毒疗法的一个有希望的目标.
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