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Related Concept Videos

Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

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...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

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

Cytotoxic T Cells-mediated Immune Response

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...
T Cell Types and Functions01:24

T Cell Types and Functions

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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

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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Related Experiment Video

Updated: Jul 3, 2026

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets
09:09

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets

Published on: April 18, 2016

A novel cell subset: interferon-producing killer dendritic cells.

Jiongkun Wang1, Feiyue Xing

  • 1Institute of Tissue Transplantation and Immunology, Jinan University, Guangzhou 510632, China.

Science in China. Series C, Life Sciences
|August 5, 2008
PubMed
Summary
This summary is machine-generated.

Interferon-producing killer dendritic cells (IKDCs) are a novel immune cell type. These cells link innate and adaptive immunity by recognizing and killing tumor cells while presenting antigens.

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Generation of Human Monocyte-derived Dendritic Cells from Whole Blood
07:35

Generation of Human Monocyte-derived Dendritic Cells from Whole Blood

Published on: December 24, 2016

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Last Updated: Jul 3, 2026

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets
09:09

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets

Published on: April 18, 2016

Generation of Human Monocyte-derived Dendritic Cells from Whole Blood
07:35

Generation of Human Monocyte-derived Dendritic Cells from Whole Blood

Published on: December 24, 2016

Area of Science:

  • Immunology
  • Cell Biology
  • Cancer Research

Background:

  • Recent reports highlight a novel dendritic cell (DC) subset.
  • This subset exhibits antigenic phenotypes resembling both Natural Killer (NK) cells and B cells.
  • It lacks surface markers of plasmacytoid DCs (pDCs) and T cells.

Purpose of the Study:

  • To introduce and characterize a novel chimera of NK cells and DCs.
  • To elucidate the functional capabilities of this new cell type.
  • To understand its role in immunosurveillance and immunity.

Main Methods:

  • Phenotypic analysis of the novel cell subset.
  • Assessment of cytokine secretion (Type I and II interferons).
  • Evaluation of cytotoxic activity against tumor cells.
  • Analysis of Major Histocompatibility Complex class II (MHC-II) molecule expression.

Main Results:

  • Identification of interferon-producing killer dendritic cells (IKDCs).
  • IKDCs secrete Type I and II interferons, enabling effective tumor cell recognition and killing.
  • IKDCs express MHC-II molecules, facilitating antigen presentation.

Conclusions:

  • IKDCs represent a unique bridge between innate and adaptive immunity.
  • These cells are crucial for immunosurveillance against tumors.
  • IKDCs possess dual functions: direct tumor cell killing and antigen presentation.