绘制NK细胞多样性的地图,以应对COVID-19和mRNA疫苗接种
Yosuke Kishi1,2, Yu-Chen Liu1, Masakazu Ishikawa1
1Laboratory for Human Immunology (Single Cell Genomics), Immunology Frontier Research Center, The University of Osaka, Osaka, Japan.
Scientific reports
|October 29, 2025
概括
自然杀手 (NK) 细胞多样性在严重的COVID-19恢复期间出现,自适应性NK细胞从正规NK细胞中发展. 这种适应性程序类似于T细胞激活,为新的免疫疗法提供了潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 人类自然杀手 (NK) 细胞表现出功能多样性,但根本原因尚未完全理解.
- 了解NK细胞异质性对于推进免疫疗法和治疗免疫相关疾病至关重要.
研究的目的:
- 为了研究在严重的COVID-19恢复期间驱动NK细胞多样性的机制.
- 确定导致适应性NK细胞形成的发育途径和细胞过程.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于分析来自严重COVID-19患者,接种疫苗的个人和健康捐赠者的NK细胞.
- 运用轨迹分析来绘制NK细胞发育途径,并识别不同的子集.
主要成果:
- 严重的COVID-19恢复与适应性CD56dimNK细胞的增加有关,其特征是克隆扩张和线粒体活性升高.
- 接种SARS-CoV-2mRNA疫苗导致未成熟CD56bright和增殖NK细胞的频率增加.
- 在严重的COVID-19期间,NK细胞的发育分裂,CD56明亮细胞分化为正规和自适应的CD56dim子集.
结论:
- NK细胞多样性是由内在的适应程序驱动的,特别明显在严重的COVID-19康复期间.
- 适应性NK细胞分化与T细胞激活途径有相似之处.
- 这些发现为NK细胞异质性提供了洞察力,并表明了基于NK细胞的适应性免疫疗法的潜力.
相关概念视频
01:29Immune Response Against Viral Pathogens
1.7K
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...
1.7K
01:27Cytotoxic T Cells-mediated Immune Response
6.5K
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...
6.5K
01:28Cells of the Innate Immune Response
8.6K
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...
8.6K
01:25Immune Surveillance by NK Cells and Phagocytes
7.8K
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...
7.8K
01:40Cell-mediated Immune Responses
83.4K
Overview
83.4K
01:28Diversity of Antigen Receptors
1.4K
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
1.4K