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Chen, Jing; Feigenbaum, Lionel; Awasthi, Parirokh; Butcher, Donna O.; Anver, Miriam R.; Golubeva, Yelena G.; Bamford, Richard; Zhang, Xiaojie; St. Claire, Mark B.; Thomas, Craig J.; Discepolo, Valentina; Jabri, Bana; Waldmann, Thomas A.
Proceedings of the National Academy of Sciences - PNAS, 08/2013, Letnik: 110, Številka: 33Journal Article
Increased serum levels of IL-15 are reported in type 1 diabetes (T1D). Here we report elevated serum soluble IL-15Rα levels in human T1D. To investigate the role of IL-15/IL-15Rα in the pathogenesis of T1D, we generated double transgenic mice with pancreatic β-cell expression of IL-15 and IL-15Rα. The mice developed hyperglycemia, marked mononuclear cell infiltration, β-cell destruction, and anti-insulin autoantibodies that mimic early human T1D. The diabetes in this model was reversed by inhibiting IL-15 signaling with anti-IL2/IL15Rβ (anti-CD122), which blocks IL-15 transpresentation. Furthermore, the diabetes could be reversed by administration of the Janus kinase 2/3 inhibitor tofacitinib, which blocks IL-15 signaling. In an alternative diabetes model, nonobese diabetic mice, IL15/IL-15Rα expression was increased in islet cells in the prediabetic stage, and inhibition of IL-15 signaling with anti-CD122 at the prediabetic stage delayed diabetes development. In support of the view that these observations reflect the conditions in humans, we demonstrated pancreatic islet expression of both IL-15 and IL-15Rα in human T1D. Taken together our data suggest that disordered IL-15 and IL-15Rα may be involved in T1D pathogenesis and the IL-15/IL15Rα system and its signaling pathway may be rational therapeutic targets for early T1D.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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