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Related Concept Videos

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...
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...
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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
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...

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Related Experiment Video

Updated: Jun 23, 2026

Mouse Na&#239;ve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
07:12

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

How are T(H)1 and T(H)2 effector cells made?

Derk Amsen1, Charalampos G Spilianakis, Richard A Flavell

  • 1Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.

Current Opinion in Immunology
|April 21, 2009
PubMed
Summary
This summary is machine-generated.

Naive CD4(+) T cells differentiate into T(H)1 or T(H)2 effectors, guided by cytokines like IL-12 and IL-4, and Notch signaling. This ensures stable immune cell inheritance for fighting infections.

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Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice
07:07

Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice

Published on: June 27, 2020

Related Experiment Videos

Last Updated: Jun 23, 2026

Mouse Na&#239;ve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
07:12

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice
07:07

Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice

Published on: June 27, 2020

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Naïve CD4(+) T cells differentiate into distinct effector lineages (T(H)1 and T(H)2) to combat specific pathogens.
  • This differentiation is a multi-phase process crucial for adaptive immunity.

Purpose of the Study:

  • To elucidate the molecular mechanisms governing T(H)1 and T(H)2 cell differentiation.
  • To understand how signaling pathways and epigenetic modifications establish stable lineage fates.

Main Methods:

  • Investigated the roles of Interleukin-12 (IL-12) and Interleukin-4 (IL-4) cytokines.
  • Examined the impact of Notch receptor signaling.
  • Analyzed the transcriptional regulation by T-bet and Gata3.
  • Studied epigenetic modifications and regulatory element formation.

Main Results:

  • IL-12, IL-4, and Notch signaling instruct naïve CD4(+) T cell differentiation.
  • Initiation of lineage-specific cytokine (Ifngamma, Il4) and transcription factor (T-bet, Gata3) gene expression.
  • Positive and negative feedback loops reinforce differentiation pathways.
  • Epigenetic modifications create regulatory elements for stable, lineage-restricted gene expression via chromosomal associations.

Conclusions:

  • A complex interplay of signaling, transcription, and epigenetic regulation ensures stable T(H)1/T(H)2 cell fate determination.
  • These mechanisms guarantee the inheritance of specialized immune cell functions in progeny for effective host defense.