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Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
Published on: May 6, 2013
Differential glycosylation of interleukin 2, the molecular basis for the NOD Idd3 type 1 diabetes gene?
P L Podolin1, M B Wilusz, R M Cubbon
1Department of Autoimmune Diseases Research, Merck Research Laboratories, Rahway, New Jersey 07065, USA.
Abstract:
The insulin-dependent diabetes (Idd) gene, Idd3, has been localised to a 0.35 cM region of chromosome 3 containing the structural gene for the cytokine interleukin 2 (IL-2). While variation of the N-terminal amino acid sequence of IL-2 has been shown to correlate with Idd3 allelic variation, differences in induction of proliferation by IL-2 allotypes have not been detected. In the current study, we examined the electrophoretic migration of IL-2 allotypes and have found two distinct patterns, consistent with differences in glycosylation, that correlate with diabetes-resistance and susceptibility. These findings strongly suggest that IL-2 variants may be functionally distinct.
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