来自 keratinocytes 的代谢警报剂增强了系统性幽默免疫力
Zhenglin Ji1,2, Ji Gao1, Shaocun Zhang3
1State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua-Peking Center for Life Sciences, Institute for Immunology, China Ministry of Education Key Laboratory of Protein Sciences, Tsinghua University, Beijing, China.
Nature
|March 4, 2026
概括
酸法尼西尔 (Farnesyl pyrophosphate,FPP) 作为一种内源性警报剂,通过皮肤细胞促进IgG抗体的产生. 这一途径增强了免疫反应,并为全身性红斑狼 (SLE) 提供了新的疫苗和治疗方法的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 代谢途径 代谢途径
背景情况:
- 局部感染诱导系统性幽默免疫的机制尚未完全理解.
- 皮肤感染和紫外线照射可以触发免疫反应,但涉及的特定分子信号尚不清楚.
研究的目的:
- 为了识别内源性分子,这些分子作为警示素来增强系统性幽默免疫力.
- 阐明法纳西尔酸盐 (FPP) 增强IgG抗体反应的信号通路.
- 研究FPP-TRPV3-IL-6/CCL20-GC轴在感染和全身性红斑狼 (SLE) 中的作用.
主要方法:
- 鉴定法纳西尔酸盐 (FPP) 是一种内源性警报物.
- 通过美酸盐通路,UPR-SREBF通路,研究了FPP在角质细胞中的积累.
- 使用成像,西部涂抹和单细胞RNA测序.
- 采用了野生型和TRPV3缺乏的小鼠模型,包括SLE模型.
主要成果:
- 通过刺激皮细胞衍生的IL-6和CCL20,FPP增强了IgG抗体反应.
- 这个轴促进T卵泡辅助细胞和树突细胞分化,放大生殖中心 (GC) 反应.
- 在FPP中,TRPV3通道被激活,导致Ca2+的流入和下游信号通路的激活 (calmodulin-calcineurin-NFAT,PYK2-RAS-ERK).
- 在SLE皮肤病变和感染小鼠皮肤中观察到该轴的过度活化,与疾病恶化相关.
结论:
- 费纳西尔酸盐 (FPP) 是一种内源性警示剂,通过TRPV3-IL-6/CCL20-GC信号轴增强系统性幽默免疫力.
- 这一途径增强了病原体特异性抗体的产生,并提供了保护.
- 这些发现为开发疫苗辅助剂和SLE潜在治疗方法提供了洞察力.
相关概念视频
Humoral Immune Responses
85.0K
Overview
85.0K
Antigens Involved in Adaptive Immunity
1.7K
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...
Complete Antigens
Complete antigens possess both immunogenicity and...
1.7K
Cell-mediated Immune Responses
85.3K
Overview
85.3K
B Cell Activation and Differentiation
17.6K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
17.6K
T Cell Activation and Clonal Selection
16.8K
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...
16.8K
Immune Response Against Viral Pathogens
2.3K
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...
2.3K


