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Related Concept Videos

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
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Cells of the Innate Immune Response01:28

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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

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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.
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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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Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
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Complete antigens possess both immunogenicity and...
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Measurement of Natural Killer Cell-Mediated Cytotoxicity and Migration in the Context of Hepatic Tumor Cells
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Requirements for human natural killer cells.

Shuaishuai Niu1,2,3,4,5, Chengxiang Xia5, Dehao Huang2

  • 1National Stem Cell Resource Center, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Cell Proliferation
|December 21, 2023
PubMed
Summary
This summary is machine-generated.

New guidelines establish quality standards for human natural killer (NK) cells in China. These requirements cover technical specifications, testing, and handling to ensure consistent NK cell applications.

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Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Human natural killer (NK) cells are crucial for innate immunity and immunotherapy.
  • Standardization is needed for reliable NK cell production and application.
  • Existing protocols for NK cell handling vary, impacting research and clinical use.

Purpose of the Study:

  • To establish comprehensive guidelines for human NK cell quality control in China.
  • To define technical requirements, testing methods, and handling procedures for NK cells.
  • To promote international standardization of human NK cell applications.

Main Methods:

  • Joint drafting by experts from the Standards Committee of Chinese Society for Cell Biology.
  • Specification of requirements for NK cell technical aspects, testing, labeling, packaging, storage, transport, and disposal.
  • Applicability to NK cells from human tissues and stem cell differentiation.

Main Results:

  • Release of the "Requirements for Human Natural Killer Cells" standard on August 30, 2022.
  • Detailed specifications cover the entire lifecycle of NK cells.
  • The standard addresses quality control for both primary and derived NK cells.

Conclusions:

  • The guidelines provide a framework for consistent NK cell quality control.
  • Implementation is expected to improve the reliability of NK cell research and therapies.
  • The standard aims to accelerate global harmonization of human NK cell protocols.