Related Experiment Video

Updated: Mar 7, 2026

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

21.4K

Antigen-Primed CD8+ T Cells Call DCs for Back Up

Marianne Burbage1, Sebastian Amigorena1

  • 1INSERM U932, Institute Curie, 26 rue d'Ulm, 75248 Paris Cedex 05, France.

Immunity
|February 24, 2017
PubMed

Insights

Naive T lymphocytes rarely encounter dendritic cells (DCs) for activation. A new study reveals that CD8+ T cells secrete chemokines, attracting DCs to enhance T cell activation, improving immune responses.

Area of Science:

  • Immunology
  • Cellular Biology
  • Molecular Biology

Background:

  • T cell activation requires encounters between naive T lymphocytes and dendritic cells (DCs).
  • These crucial encounters are infrequent due to low cell mobility and signaling.

Purpose of the Study:

  • To investigate the mechanisms that enhance T cell-DC interactions.
  • To understand how CD8+ T cells influence DC recruitment and subsequent activation.

Main Methods:

  • The study by Brewitz et al. (2017) analyzed chemokine secretion by CD8+ T cells.
  • Investigated the role of these chemokines in recruiting myeloid and plasmacytoid DCs.

Main Results:

  • CD8+ T cells secrete specific chemokines that act as attractants for DCs.
  • Recruited myeloid and plasmacytoid DCs provide essential co-stimulatory signals.
  • This chemokine-mediated recruitment significantly boosts CD8+ T cell activation.

Conclusions:

  • Chemokines secreted by activated CD8+ T cells play a critical role in immune synapse formation.
  • This mechanism enhances the efficiency of T cell activation by increasing DC encounters.
  • The findings offer insights into optimizing T cell-based immunotherapies.

More Related Videos

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets09:09

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

Published on: April 18, 2016

16.0K
Generation of Bone Marrow Derived Murine Dendritic Cells for Use in 2-photon Imaging13:13

Generation of Bone Marrow Derived Murine Dendritic Cells for Use in 2-photon Imaging

Published on: July 9, 2008

31.8K

Related Concept Videos

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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...
16.8K
Antigen Presenting Cells01:22

Antigen Presenting Cells

The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
3.9K
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...
7.7K
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
85.4K
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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.
Complete Antigens
Complete antigens possess both immunogenicity and...
1.7K
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...
2.3K