与神经和呼吸道相关的间歇性巨细胞通过I型干扰素信号传递来缓解SARS-CoV-2的致病性
Stephen T Yeung1, Payal Damani-Yokota1, Sara A Thannickal1
1Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA.
Immunity
|April 26, 2025
概括
神经和呼吸道相关的间歇性巨细胞 (NAMs) 通过限制病毒传播和炎症来控制SARS-CoV-2感染至关重要. 耗尽NAM导致小鼠的严重疾病和死亡率.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 由于病毒突变和免疫反应失调而构成重大威胁.
- 组织居民巨细胞在控制SARS-CoV-2感染期间局部炎症中的作用尚未完全理解.
研究的目的:
- 研究神经和呼吸道相关的间歇性巨细胞 (NAMs) 在对抗SARS-CoV-2感染的宿主防御中的作用.
- 阐明NAMs调节炎症和病毒传播的机制.
主要方法:
- 使用了一种适应小鼠的SARS-CoV-2 (MA-10) 感染模型.
- 采用了NAM枯竭策略,并评估了病毒载量,炎症和生存率.
- 研究了I型干扰素受体 (IFNAR) 在CD169+巨细胞中信号传递的作用.
主要成果:
- 对于控制MA-10感染,限制肺病毒分布,确保宿主存活,NAMs至关重要.
- 在小鼠中,NAM枯竭导致病毒传播的增加,炎症的增加和100%的死亡率.
- 在NAM中,IFNAR信号对于限制炎症和病毒传播至关重要;其缺乏模仿了NAM枯竭结果.
结论:
- 在调节SARS-CoV-2传播和炎症方面,NAMs起着至关重要的保护作用.
- 这些发现提供了对SARS-CoV-2病原体的关键见解,以及NAM在宿主免疫力和疾病耐受性中的重要性.
相关概念视频
Immune Response Against Viral Pathogens
705
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...
705
Immune Surveillance by NK Cells and Phagocytes
1.0K
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...
1.0K
T Cell Types and Functions
703
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...
703
Cells of the Innate Immune Response
1.2K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
1.2K
Cell-mediated Immune Responses
66.5K
Overview
66.5K
Inflammation
52.0K
Overview
52.0K


