相关实验视频
Updated: Jul 8, 2025

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Real-time Live Imaging of T-cell Signaling Complex Formation
Published on: June 23, 2013
13.9K
在teleosts中,T细胞的完全激活和功能需要第一和共刺激信号的协作
Wei Liang1, Kang Li1, Haiyou Gao1
1State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai 200241, China.
Zoological research
|December 19, 2023
概括
双信号对尼罗河鱼的T细胞激活至关重要,涉及保存的LAT信号体组件和NF-κB和MAPK/ERK等途径,对于适应性免疫进化至关重要.
科学领域:
- * 免疫学 免疫学
- *比较的基因组学
- * 进化生物学 进化生物学
背景情况:
- * 哺乳动物T细胞激活依赖于协同的第一和共同刺激信号.
- *双信号在早期脊椎动物T细胞反应中的作用基本上是未知的.
研究的目的:
- * 研究尼罗河鱼 (Oreochromis niloticus) 中LAT信号体的组成部分和功能.
- *阐明双信号在T细胞激活和增殖中的作用.
- * 为了解适应性免疫系统的演变提供见解.
主要方法:
- * 在尼罗河鱼中确定了关键的LAT信号组分 (LAT,ITK,GRB2,VAV1,SLP-76,GADS,PLC-γ1).
- *使用CD3ε和CD28单克隆抗体 (mAb) 刺激来评估T细胞激活通路 (NF-κB,MAPK/ERK,PI3K-AKT,AKT-mTORC1).
- *量化T细胞增殖,细胞亡和细胞毒性反应.
主要成果:
- * 尼罗河鱼编码保存的LAT信号组分,其表达通过CD3ε mAb刺激进行上调.
- *ITK,GRB2和VAV1与LAT相互作用,形成信号体.
- *双重CD3ε和CD28 mAb刺激协同激活T细胞,增强增殖,亡和细胞毒性反应,而单一信号不足.
结论:
- * 尼罗河鱼利用双重信号来实现最佳的T细胞反应,涉及保存的分子机械.
- * 这一发现为适应性免疫的演变提供了新的视角.
- *这项研究强调了脊椎动物进化过程中T细胞激活途径的保存性.
关键词:
适应性免疫是一种适应性免疫.CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28 CD28CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD3 CD4 CD4 CD4 CD4 CD4 CD5 CD5 CD5 CD5 CD6 CD7 CD7 CD7 CD7 CD7 CD7 CD7 CD8 CD7 CD8 CD8 CD8 CD8 CD8 CD9进化 进化 进化 进化 进化 进化 进化色色素尼洛蒂库斯 (Oreochromis niloticus) 是一种色的植物.在T细胞,T细胞.相关概念视频
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