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- W4386034220 abstract "Mutations of the transcription factor FoxP3 in patients with “IPEX” (immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome) disrupt regulatory T cells (Treg), causing an array of multiorgan autoimmunity. To understand the functional impact of mutations across FoxP3 domains, without genetic and environmental confounders, six human FOXP3 missense mutations are engineered into mice. Two classes of mutations emerge from combined immunologic and genomic analyses. A mutation in the DNA-binding domain shows the same lymphoproliferation and multiorgan infiltration as complete FoxP3 knockouts but delayed by months. Tregs expressing this mutant FoxP3 are destabilized by normal Tregs in heterozygous females compared with hemizygous males. Mutations in other domains affect chromatin opening differently, involving different cofactors and provoking more specific autoimmune pathology (dermatitis, colitis, diabetes), unmasked by immunological challenges or incrossing NOD autoimmune-susceptibility alleles. This work establishes that IPEX disease heterogeneity results from the actual mutations, combined with genetic and environmental perturbations, explaining then the intra-familial variation in IPEX." @default.
- W4386034220 created "2023-08-22" @default.
- W4386034220 creator A5012367064 @default.
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- W4386034220 creator A5088620852 @default.
- W4386034220 creator A5091637309 @default.
- W4386034220 date "2023-08-01" @default.
- W4386034220 modified "2023-10-13" @default.
- W4386034220 title "Mutations from patients with IPEX ported to mice reveal different patterns of FoxP3 and Treg dysfunction" @default.
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