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- W4313359098 abstract "Abstract Type 1 diabetes (T1D) in both humans and the NOD mouse model is caused by the autoimmune mediated killing of pancreatic β-cells. Increased frequency or activity of autoreactive T cells and failures of regulatory T cells (Tregs) to control autoreactive T cells have both been implicated in T1D etiology. Due to the expression of MHC-I molecules on β-cells, autoreactive CD8+ T cells are likely the ultimate mediators of this destruction. Developing CD8+ T cells undergo selection processes in the thymus whereby most autoreactive clonotypes are eliminated during their development. Fine mapping of a genetic locus associated with defective thymic deletion of autoreactive CD8+ AI4 TCR transgenic (AI4) T cells in NOD mice led to the identification of Nfkbid, a NFκB signal modulator, as contributing to this phenotype. Ablation of Nfkbid in NOD mice by CRISPR/Cas9 results in a decreased frequency of autoreactive CD8+ AI4 T cells and an unexpected acceleration of T1D incidence, associated with reductions in the frequency and functional capacity of peripheral Tregs. Transgenic overexpression of Nfkbid in NOD mice paradoxically results in further decreased levels of circulating autoreactive CD8+ AI4 T cells. However, transgenic elevation of Nfkbid expression also increased the frequency and functional capacity of peripheral Tregs with a striking complete absence of T1D development in these mice. Studies are ongoing to define the mechanisms of T1D resistance mediated by transgenic overexpression of the transcriptional co-factor Nfkbid." @default.
- W4313359098 created "2023-01-06" @default.
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- W4313359098 date "2019-05-01" @default.
- W4313359098 modified "2023-09-27" @default.
- W4313359098 title "<i>Nfkbid</i> overexpression in NOD mice elicits complete type 1 diabetes resistance" @default.
- W4313359098 doi "https://doi.org/10.4049/jimmunol.202.supp.115.8" @default.
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