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Large-scale Single-nuclei Profiling Identifies Role for ATRNL1 in Atrial Fibrillation [bulk RNA-seq]

ABSTRACT: Large-scale Single-nuclei Profiling Identifies Role for ATRNL1 in Atrial Fibrillation [bulk RNA-seq]

PROVIDER: PRJNA1077364 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27991907_1.fastq.gz	Fastqsanger.gz
	SRR27991907_2.fastq.gz	Fastqsanger.gz
	SRR27991908_1.fastq.gz	Fastqsanger.gz
	SRR27991908_2.fastq.gz	Fastqsanger.gz
	SRR27991909_1.fastq.gz	Fastqsanger.gz

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Large-scale Single-nuclei Profiling Identifies Role for ATRNL1 in Atrial Fibrillation

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Large-scale Single-nuclei Profiling Identifies Role for ATRNL1 in Atrial Fibrillation [snRNA-seq]

Project description:Atrial fibrillation (AF) is the most common sustained arrhythmia in humans, yet the molecular basis of AF remains incompletely understood. To determine the cell type-specific transcriptional changes underlying AF, we performed single-nucleus RNA-seq (snRNA-seq) on age- and sex-matched left atrial (LA) samples from 18 patients with AF and 16 controls without AF. From more than 175,000 nuclei we identified 15 cell types but found that only cardiomyocytes (CMs) and macrophages (MΦs) had a significant number of differentially expressed genes in patients with AF. Attractin Like 1 (ATRNL1) was strongly overexpressed in CMs among patients with AF and localized to the intercalated discs. Further, in both knockdown and overexpression experiments in atrial human embryonic stem cell-derived CMs (hESC-aCMs) we identified a potent role for ATRNL1 in cell stress response, cardiac conduction, cell junction organization and in modulation of the cardiac action potential. Finally, we prioritized genes at the known genetic loci for AF and identified an unexpected expression for a leading AF candidate gene, KCNN3. In sum, we have identified a role for ATRNL1 and other differentially regulated genes that may serve as potential therapeutic targets for this common arrhythmia.

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