相关实验视频
Updated: Jan 11, 2026

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice
Published on: June 6, 2025
细胞巨乳病毒和类风湿性关节炎对衰老的CD4+ T细胞的不同影响
Lea Williams1,2, Ali O Saber1, Silina Awad1,2
1Department of Medicine, Division of Rheumatology, Perelman School of Medicine, Institute for Immunology and Immune Health, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
慢性抗原暴露在病毒感染和自身免疫性疾病中不同地影响CD4+T细胞衰老. 细胞巨乳病毒 (CMV) 增加衰老细胞,而类风湿性关节炎 (RA) 损害其功能,显示出明显的免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- T细胞生物学T细胞生物学
- 慢性免疫激活的作用
背景情况:
- 长期暴露于抗原会诱导CD4+T细胞衰老.
- 持续性病毒感染和自身免疫对T细胞分化和功能的差异性影响尚未完全理解.
- 细胞巨乳病毒 (CMV) 和类风湿性关节炎 (RA) 作为慢性免疫激活的模型.
研究的目的:
- 确定CMV和RA对CD4+T细胞分化和功能的影响.
- 研究这些慢性疾病如何塑造T细胞衰老表型和功能能力.
主要方法:
- 使用高维质细胞计分析CD4+T细胞.
- 进行了功能性测试,以评估T细胞表型和活动.
- 对CMV阳性人群和RA患者进行了比较分析.
主要成果:
- 冠状病毒感染显著增加了CD27-CD28-CD4+ T细胞的丰度,这些细胞主要是细胞毒性和非增殖性.
- 类风湿性关节炎对衰老的CD4+T细胞的频率的影响很小,但改变了它们的功能质量,减少了促炎性细胞因子的产生和细胞毒性降粒.
- 在CMV血清阳性RA患者中,衰老的CD4+T细胞表现出细胞因子的产生和脱粒化受损,而CD8+T细胞的功能仍然保留,这表明病毒控制持续.
结论:
- CMV和RA对CD4+T细胞衰老具有明显的非冗余作用.
- 特别是在衰老的CD4+T细胞中诱导功能缺陷,影响其炎症和细胞毒性能力.
- 保存的CD8+T细胞功能表明,即使存在RA相关的T细胞变异,病毒感染也能得到强有力的控制.
更多相关视频
06:03Author Spotlight: Advancing Immune Monitoring in Critical Care Patients Using Whole Blood Assays
Published on: September 20, 2024
07:17Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
相关概念视频
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Cell-mediated Immune Responses
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Immunodeficiency Diseases
There are three main causes of immunodeficiency...