功能失调的衰老性疹简单病毒-特定的CD57+CD8+ T细胞与人类的症状复发性眼部疹有关
Aziz A Chentoufi1, Arif A Khan1, Ruchi Srivastava1
1Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, School of Medicine, University of California Irvine, Irvine, CA 92697, USA.
Viruses
|May 28, 2025
概括
单纯疹病毒 (HSV) 特定的CD8+T细胞中的细胞衰老与症状患者的复发性疹疾病有关. 健康的个体保持功能性T细胞,这表明免疫疗法的目标.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 单纯疹病毒 (HSV) 特定的CD8+T细胞对于控制疹感染至关重要.
- 在健康无症状个体和复发性疾病患者中,这些T细胞的特征尚未完全理解.
- 之前的研究表明,有症状的患者具有较少的分化,功能障碍的HSV特异性CD8+T细胞.
研究的目的:
- 在有症状 (SYMP) 和无症状 (ASYMP) 个体中研究HSV特异性CD8+T细胞的表型和功能.
- 为了确定细胞衰老是否有助于SYMP患者T细胞中观察到的功能障碍.
- 探索T细胞基础免疫疗法对复发性疹的含义.
主要方法:
- 来自10名SYMP和10名ASYMP患者的HSV特异性CD8+T细胞的分析.
- 评估细胞衰老标志物 (例如CD57 +,PD-1 +,KLRG1 +,CD28表达).
- 评估T细胞增殖,恒常性 (CD127表达) 和效应分子 (granzyme B, perforin) 的产生.
主要成果:
- 来自SYMP患者的HSV特异性CD8+T细胞表现出细胞衰老的特征,与ASYMP患者的特征不同.
- 在SYMP患者中的老化的T细胞包括CD57+和PD-1+细胞的高频率,以及KLRG1+非增殖细胞.
- 这些T细胞的数量随着时间的推移而减少,缺乏恒温维持 (减少CD127+),已经失去CD28,并且产生更少的花粉酶B和穿孔素.
结论:
- 症状复发性疹患者的HSV特异性CD8+T细胞表现出细胞衰老和功能障碍的特征.
- 细胞衰老可能在对复发性疹感染的易感性和发病性中发挥重要作用.
- 这些发现表明,开发基于T细胞的免疫疗法来治疗复发性疹的潜在目标.
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