7 Scopus citations

Abstract

A comprehensive understanding of endothelial cell lineage specification will advance cardiovascular regenerative medicine. Recent studies found that unique epigenetic signatures preferentially regulate cell identity genes. We thus systematically investigate the epigenetic landscape of endothelial cell lineage and identify MECOM to be the leading candidate as an endothelial cell lineage regulator. Single-cell RNA-Seq analysis verifies that MECOM-positive cells are exclusively enriched in the cell cluster of bona fide endothelial cells derived from induced pluripotent stem cells. Our experiments demonstrate that MECOM depletion impairs human endothelial cell differentiation, functions, and Zebrafish angiogenesis. Through integrative analysis of Hi-C, DNase-Seq, ChIP-Seq, and RNA-Seq data, we find MECOM binds enhancers that form chromatin loops to regulate endothelial cell identity genes. Further, we identify and verify the VEGF signaling pathway to be a key target of MECOM. Our work provides important insights into epigenetic regulation of cell identity and uncovered MECOM as an endothelial cell lineage regulator.

Original languageEnglish (US)
Article number2390
Pages (from-to)2390
JournalNature Communications
Volume14
Issue number1
DOIs
StatePublished - Apr 25 2023

Keywords

  • Animals
  • Humans
  • Cell Differentiation/genetics
  • Cell Lineage/genetics
  • Endothelial Cells/metabolism
  • Epigenesis, Genetic
  • MDS1 and EVI1 Complex Locus Protein/genetics
  • Regulatory Sequences, Nucleic Acid
  • Transcription Factors/metabolism
  • Zebrafish/genetics

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)

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