Abstract
The differentiation of naive CD4+ T cells into subsets of T helper cells is a pivotal process with major implications for host defense and the pathogenesis of immune-mediated diseases. Though the basic paradigm was discovered more than 15 years ago, new discoveries continue to be made that offer fresh insights into the regulation of this process (1). T helper (TH)1 cells produce interferon (IFN)-γ, promoting cell-mediated immunity and control of intracellular pathogens. We now know that TH1 differentiation is regulated by transcription factors such as T-bet, Stat1, and Stat4, as well as cytokines such as IL-12, IL-23, IL-27, type I IFNs, and IFN-γ. In contrast, TH2 cells produce IL-4, which promotes allergic responses and is important in host defense against helminths. The transcription factors Stat6, GATA-3, c-Maf, NFATs, and the cytokine IL-4 promote TH2 differentiation. These key regulators of TH differentiation are the subject of this review.
Original language | English (US) |
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Pages (from-to) | 147-161 |
Number of pages | 15 |
Journal | Journal of Clinical Immunology |
Volume | 23 |
Issue number | 3 |
DOIs | |
State | Published - May 2003 |
Externally published | Yes |
Keywords
- Differentiation
- GATA-3
- IL-12
- IL-23
- IL-27
- Interferon-γ
- Interleukin (IL)-4
- NFATs
- Stat1
- Stat4
- Stat6
- T helper (T) cells
- T1 cells
- T2 cells
- c-Maf
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology