Abstract
Naive CD4+ cells differentiate into T helper (Th1, Th2, Th9, Th17) and regulatory T (Treg) cells to execute their immunologic function. Whereas TGF-β suppresses Th1 and Th2 cell differentiation, this cytokine promotes Th9, Th17, and Foxp3+ regulatory T cells depending upon the existence of other cytokines. IL-6 promotes Th17 but suppresses regulatory T cell differentiation. Moreover, natural but not TGF-β-induced regulatory T cells convert into Th17 cells in the inflammatory milieu. This chapter discusses the updates of these cell differentiation and conversion, as well as underlying mechanisms.
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Acknowledgments
This work was in part supported by grants from the NIH R01 AR 059103, NIH R43 AR 084359, Arthritis Foundation; Wright Foundation; the Arthritis National Research Foundation; the Clinical Research Feasibility Fund; the James H. Zumberge Faculty Research and Innovation Fund; the Outstanding Youth Scientist Investigator Award from National Nature Science Foundation of China (30728007); Science and Technology Committee Project of Shanghai Pudong New Area (PKJ2009-Y41), and the American College of Rheumatology Research and Education’s Within Our Reach: Finding a Cure for Rheumatoid Arthritis campaign.
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Zheng, S.G. (2013). Regulatory T cells Versus Th17: Differentiation of Th17 Versus Treg, Are They Mutually Exclusive?. In: Quesniaux, V., Ryffel, B., Padova, F. (eds) IL-17, IL-22 and Their Producing Cells: Role in Inflammation and Autoimmunity. Progress in Inflammation Research. Springer, Basel. https://doi.org/10.1007/978-3-0348-0522-3_6
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