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Related Concept Videos

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 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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

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Related Experiment Video

Updated: Jun 2, 2026

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Armed response: how dying cells influence T-cell functions.

Thomas A Ferguson1, Jayoung Choi, Douglas R Green

  • 1Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA. ferguson@vision.wustl.edu

Immunological Reviews
|April 15, 2011
PubMed
Summary

Cell death mechanisms dictate immune responses. Understanding how apoptotic cells induce tolerance and necrotic cells stimulate immunity is key to directing immune responses against tumors and infections while preventing self-attack.

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Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes
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Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes

Published on: June 16, 2011

Related Experiment Videos

Last Updated: Jun 2, 2026

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
10:13

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses

Published on: May 6, 2019

Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes
12:12

Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes

Published on: June 16, 2011

Area of Science:

  • Immunology
  • Cell Biology
  • Biochemistry

Background:

  • Immune responses occur alongside tissue injury and cell death.
  • The immune system must differentiate between self and non-self cells, even when dealing with dying cells.
  • Apoptotic cells often induce immune tolerance, while necrotic cells can be immunogenic.

Purpose of the Study:

  • To explore the mechanisms by which dying cells influence immune tolerance and immunity.
  • To understand the biochemical processes underlying cell death decisions.
  • To elucidate how these processes can be harnessed for therapeutic benefit in cancer and infection.

Main Methods:

  • Review of existing literature on cell death pathways and immune signaling.
  • Analysis of biochemical components of cell death.
  • Correlation of cell death types with immune outcomes (tolerance vs. immunity).

Main Results:

  • Cell death pathways have distinct biochemical signatures.
  • These signatures determine whether dying cells promote immune tolerance or immunity.
  • Specific cell death pathways can be modulated to achieve desired immune responses.

Conclusions:

  • The biochemical nature of cell death is a critical determinant of immune outcomes.
  • Targeting cell death mechanisms offers a strategy for controlling immune responses.
  • Harnessing immunogenic cell death against tumors and infected cells, while promoting tolerogenic cell death for self-antigens, is a promising therapeutic avenue.