Related Experiment Video
Updated: Mar 11, 2026

12:59
Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
Published on: September 26, 2013
35.7K
TH9 cells in skin disorders
Rachael A Clark1, Christoph Schlapbach2
1Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
Seminars in Immunopathology
|November 30, 2016
Summary
TH9 cells, a T helper cell subset, are increasingly recognized for their role in skin immunity and pathology. Research is exploring how these skin-tropic cells contribute to skin conditions.
Area of Science:
- Immunology
- Dermatology
Background:
- TH9 cells are a recently identified T helper cell subset.
- Evidence suggests TH9 cells play roles in lung, gut, and tumor immunity.
- Their function in skin immunity and immunopathology is not well-defined.
Purpose of the Study:
- To review the current understanding of TH9 cells in skin immunity.
- To explore the involvement of TH9 cells in skin pathology.
- To discuss open questions regarding TH9 cell mechanisms in the skin.
Main Methods:
- Literature review of studies on TH9 cells.
- Analysis of evidence from animal models and human studies.
- Synthesis of current knowledge on TH9 cell tropism and function.
Main Results:
- TH9 cells are predominantly skin-homing and skin-resident in humans.
- These cells may be involved in protection against extracellular pathogens in the skin.
- TH9 cells are implicated as potential mediators of cutaneous pathology.
Conclusions:
- TH9 cells are significant players in skin immunity.
- Further investigation is needed to understand the conditions and mechanisms by which TH9 cells influence skin health and disease.
- Interleukin 9 producing T helper cells present a complex area for future research.
Related Concept Videos
T Cell Types and Functions
3.0K
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...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
3.0K
Skin Diseases and Disorders
6.0K
Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
6.0K
Hypersensitivity Reactions: Delayed Hypersensitivity Reactions
109
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...
109
Cells of the Adaptive Immune Response
9.8K
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...
9.8K
Cell-mediated Immune Responses
85.5K
Overview
85.5K
T Cell Activation and Clonal Selection
16.9K
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...
Naive T cells that have not yet encountered an antigen express two primary CD...
16.9K

