Apoptotic non-beta cells suppress beta cell antigen-reactive T cells and induce beta cell antigen-specific regulatory T cells.

Annals of the New York Academy of Sciences
Chang-Qing XiaMichael J Clare-Salzler

Abstract

Steady-state cell apoptosis plays an important role in maintenance of self-tolerance. Based on this notion, the use of apoptotic cells to restore self-tolerance to beta cell antigens is a rational approach to type 1 diabetes (T1D) prevention. Our previous study demonstrated that transfusion of apoptotic beta cells induced immune tolerance to beta cell antigens in NOD mice. However, concerned about the limited beta cell source for future clinical applications, we attempted in the present study to develop a more practical approach for T1D prevention using apoptotic non-beta cells. We found that UVB-irradiation-induced apoptotic NOD splenic stromal cells significantly suppressed beta cell antigen-specific T cell proliferation in vitro and in vivo. Furthermore, TCR-transgenic CD4(+) T cells primed by the antigens to which they were specific in the presence of UVB-irradiated stromal cells were rendered unresponsive to the antigen restimulation, a result that was partially attributed to the induced IL-10-producing regulatory T cells. Of more interest, transfusion of UVB-irradiated stromal cells appeared to induce beta cell antigen-responding IL-10-producing regulatory T cells in vivo. Most importantly, transfusion of UVB-irradiated s...Continue Reading

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Citations

Apr 12, 2019·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·David A McBrideNisarg J Shah
Apr 8, 2014·Journal of Perinatal Medicine·Yen-Chang Lee, Syh-Jae Lin
Nov 18, 2009·The Journal of Immunology : Official Journal of the American Association of Immunologists·Rahul KushwahJim Hu
Jul 31, 2021·The Journal of Steroid Biochemistry and Molecular Biology·Anna S Erem, Mohammed S Razzaque

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