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相关概念视频

Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

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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...
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Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

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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...
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Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

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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...
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Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

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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...
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The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

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The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
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T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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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...
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相关实验视频

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Measurement of Natural Killer Cell-Mediated Cytotoxicity and Migration in the Context of Hepatic Tumor Cells
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CD16A流出调节先天细胞参与因自然杀手细胞诱导的连续杀戮.

Chiara Zambarda1, Karolin Guldevall1, Christian Breunig2

  • 1Department of Applied Physics, Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden.

European journal of immunology
|October 21, 2025
PubMed
概括

抑制自然杀手 (NK) 细胞的Fc马受体IIIa (FcγRIIIA或CD16A) 脱落会影响连续杀戮. CD16A脱落对于持续的抗瘤NK细胞活性至关重要,影响治疗策略.

关键词:
在CD16分泌中发生脱离.在 NK 细胞中,NK 细胞是 NK 细胞.在Acimtamig中使用.天生的细胞参与者 (Innate Cell Engager)微芯片上的微芯片连续杀人 连续杀人 连续杀人 连续杀人

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科学领域:

  • 免疫学 免疫学 免疫学
  • 细胞生物学 细胞生物学
  • 癌症研究 癌症研究

背景情况:

  • 自然杀手 (NK) 细胞利用激活和抑制受体来消除瘤细胞.
  • Fc马受体IIIa (FcγRIIIA或CD16A) 是一个关键的激活受体,触发抗体依赖细胞毒性 (ADCC).
  • 抑制CD16A脱落正在探索增强ADCC,但结果是相互矛盾的.

研究的目的:

  • 研究抑制CD16A分泌对NK细胞细胞毒性动态的影响.
  • 在ADCC中比较Acimtamig (AFM13) 与IgG1抗体的疗效.
  • 阐明CD16A脱落在NK细胞连续杀死和脱落中的作用.

主要方法:

  • 基于微芯片的活细胞成像被用于观察NK细胞相互作用.
  • 使用acimtamig和IgG1抗体进行了ADCC测定.
  • 评估了CD16A分泌抑制对NK细胞细胞毒性功能的影响.

主要成果:

  • 与IgG1抗体相比,Acimtamig显示出优异的ADCC.
  • 抑制CD16A分泌降低了NK细胞的连续杀伤能力.
  • 当CD16A脱落被阻止时,观察到NK细胞与细胞脱离的损伤.

结论:

  • CD16A分泌是一种内在的NK细胞机制,对持续的抗瘤细胞毒性至关重要.
  • 阻断CD16A分泌会对NK细胞的连续杀死和脱离产生负面影响.
  • 这些发现对工程NK细胞疗法和CD16A向的参与者有影响.