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Heterogeneous Expression of Alternatively Spliced lncRNA mediates Vascular Smooth Cell Plasticity

ABSTRACT: Heterogeneous Expression of Alternatively Spliced lncRNA mediates Vascular Smooth Cell Plasticity

PROVIDER: PRJNA869091 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21026500_1.fastq.gz	Fastqsanger.gz
	SRR21026500_2.fastq.gz	Fastqsanger.gz
	SRR21026501_1.fastq.gz	Fastqsanger.gz
	SRR21026501_2.fastq.gz	Fastqsanger.gz
	SRR21026502_1.fastq.gz	Fastqsanger.gz

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Heterogeneous Expression of Alternatively Spliced lncRNA mediates Vascular Smooth Cell Plasticity

Project description:9p21 locus polymorphisms have the strongest correlation with coronary artery disease, but as a non-coding locus, disease connection is enigmatic. The lncRNA ANRIL found in 9p21 may regulate vascular smooth muscle cell (VSMC) phenotype to contribute to disease risk. We observed significant variability in induced pluripotent stem cell-derived VSMCs from patients homozygous for risk versus isogenic knockout or non-risk haplotypes. Sub-populations of risk haplotype cells exhibited variable morphology, proliferation, contraction, and adhesion. When sorted by adhesion, risk VSMCs parsed into synthetic and contractile sub-populations, i.e., weakly adherent and strongly adherent, respectively. >90% of differentially expressed genes co-regulated by haplotype and adhesion were associated with Rho GTPases, i.e., contractility. Weakly adherent sub-populations expressed more short isoforms of ANRIL, and when overexpressed in knockout cells, ANRIL suppressed adhesion, contractility, and αSMA expression. These data are the first to suggest that variable lncRNA penetrance may drive mixed functional outcomes that confound pathology.

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