alexa Defective central tolerance induction in NOD mice: genomics and genetics.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Zucchelli S, Holler P, Yamagata T, Roy M, Benoist C,

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Abstract The genetic determinism of type-1 diabetes in NOD mice likely involves complementary defects in central T cell tolerance induction and peripheral immunoregulation. To study the contribution of the NOD genetic background to central tolerance, we followed the behavior of BDC2.5 clonotype thymocytes in fetal thymic organ cultures (FTOC). The NOD genetic background encodes a quantitative deficiency in the ability to delete these self-reactive thymocytes and to divert them to the CD8alphaalpha lineage. In genetic analyses, comparing NOD and B6.H2g7 FTOCs, the NOD defect incorporated the influence of several loci (notably ones on chr1 and 3). Microarray analyses assessing FTOCs from the same two strains argued that the NOD abnormality reflects the combined effects of turning down the gene expression program that provokes apoptosis and turning on a new program promoting cell survival. Intersection of the data from the two approaches points to a small set of attractive candidate genes. This article was published in Immunity and referenced in Journal of Clinical & Cellular Immunology

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