早期NK细胞和T细胞功能障碍标志着肥胖和健康体重患者的严重登革热的进展
Michaela Gregorova1, Marianna Santopaolo1, Lucy C Garner2
1School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
Nature communications
|July 2, 2025
概括
登革热患者早期的T和NK细胞特征预测了严重疾病的发展. 这些因肥胖而恶化的免疫细胞功能障碍,表明登革热免疫调节的新治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 基因组学就是基因组学.
背景情况:
- 登革热病毒感染影响全球健康,治疗选择有限.
- 对于T细胞和NK细胞在登革热病原体中的确切作用尚不完全理解.
研究的目的:
- 研究登革热患者T细胞和NK细胞的纵向表型,功能和转录特征.
- 确定与严重登革热相关的早期免疫细胞特征,并探索它们因肥胖等宿主因素的调节.
主要方法:
- 对124名登革热患者进行了纵向分析.
- 流细胞计和单细胞RNA测序用于T细胞和NK细胞的表征.
- 转录和蛋白质组分析以评估免疫反应.
主要成果:
- 在感染初期,明显的T/NK细胞特征区分了严重的登革热 (SD) 与非严重的病例.
- 肥胖会加剧这些免疫特征,增加对SD的易感性.
- 在SD中,T细胞和NK细胞显示共抑制受体表达增加和细胞毒性降低,与I型干扰素反应受损有关.
结论:
- 功能障碍的T和NK细胞特征是登革热病原体的核心.
- 这些免疫细胞的改变,可能是由缺陷的天生的免疫力驱动的,在登革热中呈现出免疫调节疗法的新目标.
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