Related Experiment Video

Updated: Aug 9, 2026

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
12:59

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes

Published on: September 27, 2013

TH1 and TH2 lymphocyte development and regulation of TH cell-mediated immune responses of the skin

Tilo Biedermann1, Martin Röcken, José M Carballido

  • 1Novartis Research Institute, Vienna, Austria. Tilo.Biedermann@pharma.novartis.com

The Journal of Investigative Dermatology. Symposium Proceedings
|February 12, 2004
PubMed

Insights

The balance between T helper 1 (TH1) and T helper 2 (TH2) cells is crucial for immune responses, especially in skin disorders like psoriasis and atopic dermatitis. Understanding their development and recruitment can lead to targeted therapies.

Area of Science:

  • Immunology
  • Dermatology
  • Cell Biology

Background:

  • T helper (TH) cells differentiate into distinct subsets, notably TH1 and TH2, which play critical roles in adaptive immunity.
  • The balance between TH1 and TH2 responses is essential for maintaining immune homeostasis and preventing pathological conditions.
  • Dysregulation of TH1/TH2 polarization is implicated in various immune-mediated skin disorders.

Purpose of the Study:

  • To review the fundamental factors governing TH1 and TH2 cell development.
  • To explore the role of regulatory mechanisms, including cytokines and cell populations, in polarized immune responses.
  • To discuss the implications of TH1/TH2 cell biology in the context of specific skin diseases and therapeutic strategies.

Main Methods:

  • Review of existing literature on TH1 and TH2 cell differentiation and function.
  • Analysis of key regulatory molecules such as interleukin-12 (IL-12) and interleukin-4 (IL-4).
  • Examination of the roles of transcription factors, costimulatory molecules, and dendritic cells in immune polarization.

Main Results:

  • Identification of IL-12 and IL-4 as critical cytokines in directing TH1 and TH2 differentiation, respectively.
  • Elucidation of the contribution of specialized dendritic cell subsets and costimulatory molecules to immune polarization.
  • Description of chemokine-mediated recruitment and amplification of TH1 and TH2 cells at inflammatory sites.
  • Highlighting a novel role for IL-4 in inducing TH1 responses.

Conclusions:

  • Understanding the intricate regulatory mechanisms of TH1 and TH2 cell development and function is key to addressing immune-mediated skin disorders.
  • Chemokines and their receptors are vital for directing polarized T helper cell responses to inflammatory sites.
  • Insights into TH1/TH2 cell biology, including novel pathways, offer potential for developing improved immunomodulatory therapies for skin diseases.

More Related Videos

Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture10:31

Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture

Published on: April 8, 2016

Preparation of Single-cell Suspensions for Cytofluorimetric Analysis from Different Mouse Skin Regions05:58

Preparation of Single-cell Suspensions for Cytofluorimetric Analysis from Different Mouse Skin Regions

Published on: April 20, 2016

Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
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...
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...
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...
Hypersensitivity Reactions: Delayed Hypersensitivity Reactions01:29

Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...