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Updated: Jun 7, 2026

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
Published on: September 26, 2013
Responding to infection and apoptosis--a task for TH17 cells
Corinna F Brereton1, J Magarian Blander
1Department of Medicine, Immunology Institute, Mount Sinai School of Medicine, New York, New York 10029, USA.
Abstract:
Two of the critical cytokines required for the differentiation of T helper 17 (T(H)17) cells from naive CD4 T cells are transforming growth factor-beta (TGF-β) and interleukin-6 (IL-6). Innate recognition of apoptotic cells in the presence of Toll-like receptor engagement directs the simultaneous synthesis of these cytokines by antigen-presenting cells (APCs), and as such provides a cytokine milieu that favors T(H)17 cell induction. In this situation, APCs are activated in response to ligands derived from apoptotic cells, but also to those from the infecting pathogen. Induction of a T(H)17 response against Citrobacter rodentium infection was dependent on the ability of Citrobacter to induce apoptosis of intestinal epithelial cells. In this review, we will discuss how simultaneous activation of inflammatory and noninflammatory pattern recognition receptors on APCs impacts T helper cell differentiation, and what relevance this effect has on the immune response generated against bacterial infections that cause host cell apoptosis.
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