Abstract
Diabetes in non-obese diabetic (NOD) mice is mediated by pathogenic T-helper type 1 (Th1) cells that arise because of a deficiency in regulatory or suppressor T cells1,2. Vα14–Jα15 natural killer T (NKT) cells recognize lipid antigens presented by the major histocompatibility complex class I-like protein CD1d (refs. 3,4). We have previously shown that in vivo activation of Vα14 NKT cells by α-galactosylceramide (α-GalCer) and CD1d potentiates Th2-mediated adaptive immune responses5,6. Here we show that α-GalCer prevents development of diabetes in wild-type but not CD1d-deficient NOD mice. Disease prevention correlated with the ability of α-GalCer to suppress interferon-γ but not interleukin-4 production by NKT cells, to increase serum immunoglobulin E levels, and to promote the generation of islet autoantigen-specific Th2 cells. Because α-GalCer recognition by NKT cells is conserved among mice and humans7,8, these findings indicate that α-GalCer might be useful for therapeutic intervention in human diseases characterized by Th1-mediated pathology such as Type 1 diabetes.
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Acknowledgements
We thank A.C. Powers for helpful suggestions; M. Nadaf for help with flow cytometry; C. Marlar for critical reading of the manuscript; and A. Herbelin, J.-F. Bach and T. Delovitch for sharing information prior to publication. This work was supported in part by a discovery grant from the Diabetes Research and Training Center at Vanderbilt University (to L.V.K.).
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Hong, S., Wilson, M., Serizawa, I. et al. The natural killer T-cell ligand α-galactosylceramide prevents autoimmune diabetes in non-obese diabetic mice. Nat Med 7, 1052–1056 (2001). https://doi.org/10.1038/nm0901-1052
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DOI: https://doi.org/10.1038/nm0901-1052
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