相关实验视频
Updated: Jul 14, 2026

Murine Superficial Lymph Node Surgery
Published on: May 21, 2012
CD4+ T细胞帮助控制 CD8+ T细胞的记忆,通过 TRAIL介导的激活诱导的细胞死亡
Edith M Janssen1, Nathalie M Droin, Edward E Lemmens
1Division of Cellular Immunology, La Jolla Institute for Allergy and Immunology, 10355 Science Center Drive, San Diego, California 92121, USA.
在启动过程中,CD4+ T细胞的帮助使CD8+ T细胞在再次遇到抗原时能够自主扩张,形成免疫记忆. 没有这种帮助,CD8+ T细胞会经历TRAIL介导的亡,突出了适应性免疫的新机制.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- CD4+ T 淋巴细胞为 CD8+ T 淋巴细胞的原始化提供了必要的"帮助",这是建立免疫记忆的关键因素.
- 初始的CD8+T细胞在抗原再次遇到时表现出不同的命运:"辅助"细胞经历二次扩张,而"无助"细胞则没有.
- 这些被编程的反应表明,在原始化过程中的指令信号决定了CD8+ T细胞后代的命运.
研究的目的:
- 调查控制CD8+T细胞的二次反应的指令程序.
- 阐明"辅助"与"无助"CD8+T细胞的差异扩张背后的机制.
- 确定导致"无助"CD8+T细胞缺少二次扩张的分子媒介.
主要方法:
- 在用CD4+T细胞帮助和不使用CD8+T细胞原始化后对CD8+T细胞反应的比较分析.
- 在二次刺激时评估效应器功能和繁殖能力.
- 研究亡途径,包括激活诱导的细胞死亡和 TRAIL 的作用.
主要成果:
- "无助"的CD8+T细胞,在没有CD4+T细胞的帮助下进行原始化,在二次刺激时经历激活诱导的细胞死亡.
- 这种亡主要由与瘤亡因子 (TNF) 相关的亡诱导配体 (TRAIL) 介导.
- 相比之下",辅助"的CD8+T细胞保留了自主克隆扩张的能力.
结论:
- TRAIL表达的调节是CD4+ T细胞控制CD8+ T细胞记忆生成的关键机制.
- 这些发现揭示了一种新的分子途径,它控制了适应性免疫反应和CD8+T细胞命运.
- 了解这个"教学计划"为增强基于T细胞的免疫疗法提供了洞察力.
更多相关视频
09:57Real Time Detection of In Vitro Tumor Cell Apoptosis Induced by CD8+ T Cells to Study Immune Suppressive Functions of Tumor-infiltrating Myeloid Cells
Published on: January 29, 2019
09:48In Vitro Resident Memory CD8 T Cell Differentiation Using Epithelial Organoid-T Cell Co-culture System
Published on: February 3, 2026
相关概念视频
Cell-mediated Immune Responses
The Extrinsic Apoptotic Pathway
Cells of the Innate Immune Response
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
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...