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Hugues, Stéphanie; Mougneau, Evelyne; Ferlin, Walter; Jeske, Dirk; Hofman, Paul; Homann, Dirk; Beaudoin, Lucie; Schrike, Corinne; Von Herrath, Matthias; Lehuen, Agnès; Glaichenhaus, Nicolas
Immunity (Cambridge, Mass.), 02/2002, Letnik: 16, Številka: 2Journal Article
Crosspresentation of self-antigens by antigen-presenting cells is critical for the induction of peripheral tolerance. As apoptosis facilitates the entry of antigens into the crosspresentation pathway, we sought to prevent the development of autoimmune diabetes by inducing pancreatic β cell apoptosis before disease onset. Accordingly, young nonobese diabetic (NOD) mice injected with a single low dose of streptozotocin (SZ), a drug cytotoxic for β cells, exhibited impaired T cell responses to islet antigens and were protected from spontaneous diabetes. Furthermore, β cell apoptosis was necessary for protection since SZ did not protect RIP-CrmA transgenic NOD mice in which β cells expressed the caspase inhibitor CrmA. Our results support a model in which apoptosis of pancreatic β cells induces the development of regulatory cells leading to the tolerization of self-reactive T cells and protection from diabetes.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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