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Related Concept Videos

T Cell Types and Functions01:24

T Cell Types and Functions

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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.
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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.
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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.
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Related Experiment Video

Updated: Apr 22, 2026

Development and Functional Characterization of Murine Tolerogenic Dendritic Cells
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Development and Functional Characterization of Murine Tolerogenic Dendritic Cells

Published on: May 18, 2018

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Distinct dendritic cell subsets actively induce Th2 polarization.

Melissa Y Tjota1, Anne I Sperling2

  • 1Committee on Immunology, University of Chicago, Chicago, IL, USA; Medical Scientist Training Program, University of Chicago, Chicago, IL, USA.

Current Opinion in Immunology
|October 8, 2014
PubMed
Summary
This summary is machine-generated.

Dendritic cells (DCs) actively program Th2 cell differentiation, challenging the view that this is a default pathway. Specific tissue DC subsets upregulate key factors to induce Th2 polarization.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • The role of dendritic cells (DCs) in T helper cell polarization is critical for adaptive immunity.
  • Previous hypotheses suggested Th2 polarization by DCs was a passive default pathway in the absence of inflammatory signals.

Purpose of the Study:

  • To investigate the mechanisms by which dendritic cells induce Th2 polarization.
  • To determine if dendritic cells are actively programmed to induce Th2 differentiation.

Main Methods:

  • Analysis of transcription factors, cell surface molecules, and cytokines in DCs.
  • Stimulation of tissue DCs with type-2 inducing stimuli.

Main Results:

  • Distinct subsets of tissue DCs actively polarize Th2 cells upon stimulation.
  • DC development involves upregulation of specific molecular markers associated with Th2 induction.

Conclusions:

  • Dendritic cell-induced Th2 polarization is an active, programmed process, not a default pathway.
  • Specific tissue DC subsets play an active role in initiating Th2 immune responses.