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Transcriptional and chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE185191 | GEO | 2022/03/09

REPOSITORIES: GEO

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Chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

Project description:Type 1 diabetes (T1D) usually has a preclinical phase identified by the presence of circulating autoantibodies to pancreatic islet antigens, and most young children who have multiple autoantibodies progress to diabetes within 10 years. While autoantibodies denote underlying islet autoimmunity, how this process is initiated and then progresses to clinical diabetes on a background of genetic susceptibility is not clearly understood. Only one study has thus far reported changes in gene expression in isolated immune cells associated with progression to islet autoimmunity. We analysed chromatin accessibility by ATAC-seq in CD4+ T cells in four genetically at-risk children with islet autoantibodies who progressed to diabetes in ≤ 3 years (‘progressors’), compared to five at-risk children matched for sex, age and HLA who had not progressed (‘non-progressors). From ATAC-seq data, we generated the first map of chromatin accessibility in T cells of islet autoantibody-positive children. Progression was associated with a subtle reconfiguration of regulatory chromatin regions, and some of the chromatin conformation changes could be linked to progression associated expression changes at cytotoxic genes.

2022-03-09 | GSE185189 | GEO

Transcriptional changes underlying progression from islet autoantibody positivity to type 1 diabetes

2022-03-09 | GSE185190 | GEO

Chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

Project description:Chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

| PRJNA767892 | ENA

Transcriptional and chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

Project description:Transcriptional and chromatin accessibility changes underlying progression from islet autoantibody positivity to type 1 diabetes

| PRJNA767889 | ENA

Transcriptional changes underlying progression from islet autoantibody positivity to type 1 diabetes

Project description:Transcriptional changes underlying progression from islet autoantibody positivity to type 1 diabetes

| PRJNA767893 | ENA