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The endothelial-enriched lncRNA LINC00607 mediates angiogenic function.

Frederike Boos1,2, James A Oo1,2, Timothy Warwick1,2

  • 1Institut für Kardiovaskuläre Physiologie, Fachbereich Medizin der Goethe-Universität, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany.

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Long non-coding RNA LINC00607 is crucial for blood vessel formation. This endothelial-enriched lncRNA interacts with BRG1 to regulate gene expression, promoting angiogenesis and maintaining vascular health.

Keywords:
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Area of Science:

  • Molecular Biology
  • Cardiovascular Research
  • Genomics

Background:

  • Long non-coding RNAs (lncRNAs) regulate gene expression and cellular function.
  • The roles of lncRNAs in endothelial cells and cardiovascular disease are not well understood.
  • LINC00607 is a lncRNA highly present in human endothelial cells.

Purpose of the Study:

  • To investigate the function of the lncRNA LINC00607 in endothelial cells.
  • To determine the molecular mechanisms by which LINC00607 influences angiogenesis and vascular function.
  • To explore the therapeutic potential of LINC00607 in cardiovascular contexts.

Main Methods:

  • RNA-Seq and FANTOM5 CAGE analysis to identify and quantify lncRNAs.
  • siRNA knockdown and CRISPR/Cas9 gene editing to manipulate LINC00607 and BRG1 expression.
  • In vitro assays (angiogenic sprouting) and in vivo models (SCID mice) to assess vascular network formation.
  • ATAC-Seq and CUT&RUN to analyze chromatin accessibility and protein-DNA interactions.

Main Results:

  • LINC00607 expression is induced in conditions relevant to cardiovascular disease and regression.
  • Knockout of LINC00607 impairs VEGF-A-induced angiogenesis and vascular network integration.
  • LINC00607 interacts with the chromatin remodeler BRG1, maintaining chromatin accessibility at ERG-binding sites.
  • BRG1 is essential for stabilizing chromatin at ERG-binding sites, regulating endothelial gene transcription.

Conclusions:

  • LINC00607 is an endothelial-specific lncRNA vital for angiogenesis.
  • LINC00607 functions by interacting with BRG1 to regulate ERG target gene transcription.
  • This mechanism highlights LINC00607 as a potential therapeutic target for cardiovascular diseases.