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Dendritic cells from Peyer's patch and spleen induce different T helper cell responses
M P Everson1, D G Lemak, D S McDuffie
1Department of Medicine, The University of Alabama at Birmingham, 35294-0006, USA.
Summary
Dendritic cells (DC) from different tissues influence T cell responses. Spleen DCs promote Th1 cytokines, while Peyer's patch DCs favor Th2 cytokines, impacting T cell development.
Area of Science:
- Immunology
- Cell Biology
Background:
- The role of antigen-presenting cells (APC) in T helper type 1 (Th1) and T helper type 2 (Th2) responses is not fully understood.
- Dendritic cells (DC) are potent APCs for naive T cell activation.
Purpose of the Study:
- To investigate if the tissue of origin of dendritic cells (DC) affects their ability to regulate T helper type 1 (Th1) and T helper type 2 (Th2) cytokine profiles.
Main Methods:
- Comparison of cytokine profiles induced by spleen (systemic) DCs versus Peyer's patch (mucosal) DCs.
- Analysis of T cell responses in mixed leukocyte reactions and antigen-specific T cell clones.
Main Results:
- Spleen DCs predominantly induced Th1 cytokines, including interferon-gamma (IFN-gamma) and interleukin-2 (IL-2).
- Peyer's patch DCs predominantly induced Th2 cytokines, including IL-4 and IL-6.
- These distinct cytokine profiles were observed in both spleen and Peyer's patch T cells.
Conclusions:
- The tissue of origin of dendritic cells significantly impacts the type of T cell response generated.
- DC origin influences the balance of Th1/Th2 cytokine production, affecting T cell development.