Journal
EXPERIMENTAL LUNG RESEARCH
Volume 33, Issue 10, Pages 507-518Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01902140701756604
Keywords
cytokines; immunity; T-cells
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Interleukin (IL)-17A and IL-17F are produced by a novel class of effector alpha beta T cells called Th17 cells as well as gamma delta T cells are alpha beta IL-17-producing T cells are controlled by the tran.scriplio-n factor ROR gamma t and develop independent of GATA-3, T-bet, Stat 4, and Stat 6. Effector molecules produced by these cells include IL-17A, IL-17F, anal IL-22. IL-17A and IL-17F bind to IL-17 receptor (IL-17R) and receptor signaling is critical for host defense against, extracellular bacteria by regulating chemokine gradients for neutrophil emigration into infected tissue sites as well as via regulation of host granulopoiesis. Furthermore, it has recently been shown, that IL-17 and IL-22 regulate the production of antimicrobial proteins in. epithelium. Although Th17 cells are important in nntcosal host defense, in, the setting of retained antigenic stimulation, such as in the setting of asthma or chronic infection, such as in cystic fibrosis, or in the selling of autoimmnnity, these cells cart mediate imrnunopathology.
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