TLR2121的I型干扰素生产机制
Rodrigo Guabiraba1, Damaris Ribeiro Rodrigues2, Paul T Manna3
1ISP, INRAE, Université de Tours, 37380, Nouzilly, France.
Developmental and comparative immunology
|November 11, 2023
概括
鸟类托尔样受体21 (TLR21) 激活的NF-κB和干扰素生产,类似于哺乳动物TLR9. 然而,chTLR21信号传递不同,因为不需要TBK1激酶.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 进化生物学 进化生物学
背景情况:
- 天生的免疫依赖于模式识别受体 (PRRs),如托尔类受体 (TLRs),以检测微生物核酸.
- TLRs对于区分自我与非自我至关重要,启动宿主防御机制.
- 鸟类TLR21识别细菌DNA基因 (CpG),其功能与哺乳动物TLR9.9类似.
研究的目的:
- 为了研究在中鸟类TLR21的信号通路和激活输出.
- 为了比较鸟类TLR21功能与哺乳动物TLR9在对核酸的反应.
- 了解核酸感应机制的进化保护.
主要方法:
- 对的TLR21 (chTLR21) 信号在的巨细胞中的分析.
- 研究NF-κB和I型干扰素反应的激活.
- 评估IFNB转录对NF-κB,IRF7和TBK1激酶的依赖性.
主要成果:
- 肉TLR21激活NF-κB并诱导巨细胞中的I型干扰素反应.
- 通过chTLR21介导的IFNB转录取决于NF-κB和IRF7.
- 值得注意的是,chTLR21信号传递独立于TBK1激酶,与哺乳动物TLR9.9不同.
结论:
- 鸟类TLR21与哺乳动物TLR9.9共享保存的信号组件和下游反应.
- chTLR21的TBK1-独立途径代表了与哺乳动物TLR9.9的分歧.
- 这些发现增强了对跨物种宿主-病原体相互作用中保存的先天免疫机制的理解.
相关概念视频
Immune Response Against Viral Pathogens
795
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
795
T Cell Types and Functions
1.0K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.0K
Cell-mediated Immune Responses
68.6K
Overview
68.6K
T Cell Activation and Clonal Selection
753
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
753


