NK细胞-单细胞交叉交谈是严重COVID-19的NK细胞激活的基础
Madeline J Lee1,2, Izumi de Los Rios Kobara1,2, Trisha R Barnard1
1Department of Medicine, Stanford University School of Medicine, Palo Alto, CA.
Journal of immunology (Baltimore, Md. : 1950)
|April 5, 2024
概括
在严重的COVID-19患者中,自然杀手 (NK) 细胞和单细胞之间的相互作用有助于NK细胞功能障碍. 这些患者的单细胞激活NK细胞,影响其免疫反应.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 在严重的COVID-19患者中,自然杀手 (NK) 细胞表现出激活和功能障碍.
- 像I型干扰素 (IFN) 和转化生长因子-β (TGF-β) 这样的可溶性因子已知是NK细胞失调的贡献者.
- 在COVID-19期间,直接细胞与细胞相互作用在调节NK细胞功能的特定作用尚未完全阐明.
研究的目的:
- 研究COVID-19中NK细胞功能障碍的机制,重点研究细胞与细胞之间的相互作用.
- 确定单细胞-NK细胞通信在严重COVID-19期间对NK细胞表型和功能的影响.
主要方法:
- 单细胞RNA测序数据的结合计算细胞-细胞通信分析与体外初级细胞共同培养实验.
- 来自健康捐赠者的共培养NK细胞与来自COVID-19患者或健康捐赠者的单细胞.
- 使用Transwell设置和O-链分析的超剂,以区分可溶性因子和直接细胞接触效应.
主要成果:
- 预计NK细胞通过可溶性因子和直接接触,与单细胞相互作用最强.
- 同培养健康的NK细胞与COVID-19患者单细胞复制NK细胞功能障碍表型,包括改变NKG2D表达和增加增殖.
- 特朗斯韦尔的实验表明,CD56bright CD16-NK细胞被严重的COVID-19患者单细胞激活,在超级生物中检测到高水平的促炎细胞因子和TGF-β.
结论:
- NK细胞和单细胞之间的细胞-细胞相互作用在严重的COVID-19中观察到的NK细胞激活和功能障碍中发挥着重要作用.
- 来自COVID-19患者的单细胞直接影响NK细胞的行为,导致严重疾病中出现的免疫失调.
- 了解这些相互作用对于开发针对性免疫疗法来治疗严重的COVID-19至关重要.
更多相关视频
相关概念视频
Cells of the Innate Immune Response
1.6K
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...
1.6K
Immune Response Against Viral Pathogens
779
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...
779
Cytotoxic T Cells-mediated Immune Response
907
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
907
Immune Surveillance by NK Cells and Phagocytes
1.4K
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...
1.4K


