TREM2在微质中受到HSV1的下调,并参与大脑中的抗病毒防御
Stefanie Fruhwürth1,2, Line S Reinert3, Carl Öberg2
1Department of Rheumatology and Inflammatory Research, Institute of Medicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
Science advances
|August 18, 2023
概括
TREM2 (在骨髓细胞2表达的触发受体) 对于微质对大脑中的简单疹病毒1型 (HSV1) 的抗病毒防御至关重要. 它的缺乏会损害病毒清除,增加感染易感性,可能与阿尔茨海默氏症有关.
科学领域:
- 神经免疫学 神经免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 微质是大脑抗病毒免疫力的关键参与者.
- 简单疹病毒1型 (HSV1) 对神经健康构成重大威胁.
- 在微质抗病毒反应中TREM2 (在骨髓细胞2表达的触发受体) 的作用尚未完全理解.
研究的目的:
- 研究TREM2在微质抗病毒防御中对HSV1.1的功能.
- 确定TREM2在cGAS-STING通路和HSV1感染期间的细胞化中的作用.
- 探索TREM2变化的影响在HSV1相关的神经疾病,包括阿尔茨海默病.
主要方法:
- 使用人类诱导多能干细胞 (hiPSC) 衍生的微质细胞.
- 在HSV1感染时分析了微质中的基因表达变化.
- 评估了TREM2减弱对HSV1感染在体外 (微神经元共同培养) 和体内 (老鼠大脑) 的影响.
- 研究了TREM2对cGAS-STING信号通路的影响.
主要成果:
- 在微质中,HSV1感染降低TREM2通路基因表达的调节.
- 通过cGAS-STING通路,TREM2对于病毒诱导的干扰素β (IFNB) 生产至关重要.
- TREM2调解HSV1感染神经元的细胞形成.
- 在人类的微质神经元共同培养和小鼠大脑中,TREM2的枯竭增加了对HSV1感染的易感性.
- TREM2增加了STING信号和TBK1和IRF3.3的下游激活.
结论:
- TREM2在微质抗病毒免疫反应中起着至关重要的作用,对HSV1.
- 在病毒清除和免疫信号传递中TREM2的功能对于保护大脑免受HSV1.1的影响至关重要.
- 由于遗传突变或HSV1感染导致TREM2失调,可能导致像阿尔茨海默病这样的神经病理.
相关概念视频
Immune Response Against Viral Pathogens
824
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...
824
Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
344
Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
344
T Cell Types and Functions
1.1K
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...
1.1K


