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A CRISPR-Activation CROP-seq Screen Identifies HMGN1 as a Dosage Sensitive Regulator of Heart Defects in Down Syndrome (scATAC-Seq)

GSE271445 Homo sapiens Genome binding/occupancy profiling by high throughput sequencing 4 samples Submitted 2025/08/26 Platform GPL24676
Summary
Congenital heart defects (CHD) are the most common form of developmental abnormalities, occurring in ~1% of live births, and can arise due to altered dosage of genes essential for cardiogenesis. Aneuploidy accounts for nearly 15% of CHD and the most frequent form involves trisomy of chromosome 21 (Ch21), resulting in Down Syndrome (DS). Here we used single cell RNA-seq, CRISPR-activation with single cell RNA-seq, single cell ATAC-seq and Cut&Tag epigenomic profiling to define the molecular disruptions occuring with Trisomy 21 and upregulation of the Ch21 epigenetic factor HMGN1. These experiments were performed in human pluripotent stem cells (hiPSCs) or in directed differentiation to cardiomyocyte lineages at days 10 and 20.
Published in
Myocardial reprogramming by HMGN1 underlies heart defects in trisomy 21
Ranade SS, Li F, Whalen S et al. · Nature 2025 · PMID 41125893 · doi:10.1038/s41586-025-09593-9
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Direct links to NCBI, no account and no request form: the whole study as GSE271445_RAW.tar, processed values as the series matrix, the supplementary file directory, and per-sample supplementary files for any of the 4 samples. Raw sequencing reads are also available from ENA.

Also filed as BioProject PRJNA1131438 and SRA study SRP517852. Searching any of these in the dataset finder brings you back here.

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