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Diabetes Pathogenesis

Defective CTLA-4 induction is controlled by gene(s) in Idd5.1 region in nonobese diabetics

Published in Obesity and Diabetes Week, April 3rd, 2006

Defective induction of CTLA-4 in the nonobese diabetic mouse is controlled by the NOD allele of Idd3/IL-2 and a novel locus (Ctex) telomeric on chromosome 1.

According to a study from Sweden, "Cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4), or CD152, is a negative regulator of T-cell activation and has been shown to be associated with autoimmune diseases. Previous work has demonstrated a defect in the expression of this molecule in nonobese diabetic (NOD) mice upon anti-CD3 stimulation in vitro."

"Using a genetic approach," explained M. Lundholm and colleagues, Umea University "we demonstrate that a novel locus (Ctex) telomeric on chromosome I...

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