相关实验视频
Updated: Jul 23, 2026

13:58
Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells
Published on: October 22, 2012
概括
双阳性T细胞调节胸腺中T细胞的发育. 这些细胞产生淋巴毒素,并利用RORt转录因子指导T细胞系成熟.
科学领域:
- 免疫学 免疫学 免疫学
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 胸腺是一个主要的淋巴体器官,对T细胞成熟至关重要.
- T细胞的发育涉及不同的前体阶段,包括双阳性细胞.
- 了解T细胞谱系调节对于免疫系统功能至关重要.
研究的目的:
- 探索在甲状腺内T细胞发育中的新型调节机制.
- 调查双阳性T细胞在指导T细胞谱系承诺中的作用.
主要方法:
- 在胸膜T细胞种群中分析基因表达和蛋白质功能.
- 研究淋巴毒素信号传递对T细胞发育的影响.
- 研究RORt转录因子在T细胞分化中的作用.
主要成果:
- 双阳性T细胞积极调节特定T细胞系的发展.
- 双阳性T细胞产生淋巴毒素是关键的调节机制.
- 转录因子RORt在调节这种调节方面发挥着至关重要的作用.
结论:
- 已经确定了一种新的内调节层.
- 双阳性T细胞不仅仅是T细胞命运的前体,而且是T细胞命运的活性调节者.
- 这一发现为控制T细胞发育的复杂过程提供了洞察力.
相关概念视频
Immunogold Electron Microscopy
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
Immune Surveillance by NK Cells and Phagocytes
Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

