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Updated: Aug 30, 2025

In Vitro Differentiation of Human CD4+FOXP3+ Induced Regulatory T Cells (iTregs) from Naïve CD4+ T Cells Using a TGF-β-containing Protocol
Published on: December 30, 2016
Interferon-β promotes the survival and function of induced regulatory T cells
Nanako Nishiyama1, Chigusa Nakahashi-Oda2, Akira Shibuya3
1Department of Immunology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan; Doctoral Program in Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan.
Abstract:
Type I interferons (IFNs) are pleiotropic cytokines and impact various immune cells, including regulatory T cells (Treg cells). The effect of type-I IFNs on the development and function of Treg cells is quite controversial. Here we induced Treg cells (iTreg cells) from naïve CD4+ T cells in vitro in the presence or absence of IFN-β to elucidate its direct effect on the induction of iTreg cells. We found that IFN-β suppressed the proliferation of iTreg cells but enhanced their expression of anti-apoptotic genes Bcl-2 and Mcl-1 during the development of iTreg cells. We also found that IFN-β promoted suppression of conventional T cell proliferation by iTreg cells. These results suggest that IFN-β promotes the survival and immunomodulatory function of iTreg cells.
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