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NIH Research Festival

September 12 – 14, 2018

A Metabolic Basis for Endothelial-to-Mesenchymal Transition

Thursday, September 13, 2018 – Poster Session IV
3:30 – 5:00 p.m.

FAES Terrace

NHLBI

CELLBIO-19

Authors

  • J Xiong
  • H Kawagishi
  • Y Yan
  • J Liu
  • QS Wells
  • LR Edmunds
  • MM Fergusson
  • ZX Yu
  • II Rovira
  • EL Brittain
  • MJ Wolfgang
  • JP Fessel
  • T Finkel

Abstract

Endothelial-to-mesenchymal transition (EndoMT) is a cellular process often initiated by the transforming growth factor b (TGF-b) family of ligands. Although required for normal heart valve development, deregulated EndoMT is linked to a wide range of pathological conditions. Here, we demonstrate that endothelial fatty acid oxidation (FAO) is a critical in vitro and in vivo regulator of EndoMT. We further show that this FAO-dependent metabolic regulation of EndoMT occurs through alterations in intracellular acetyl-CoA levels. Disruption of FAO via conditional deletion of endothelial carnitine palmitoyltransferase II (Cpt2E-KO) augments the magnitude of embryonic EndoMT, resulting in thickening of cardiac valves. Consistent with the known pathological effects of EndoMT, adult Cpt2E-KO mice demonstrate increased permeability in multiple vascular beds.Taken together, these results demonstrate that endothelial FAO is required to maintain endothelial cell fate and that therapeutic manipulation of endothelial metabolism could provide the basis for treating a growing number of EndoMT-linked pathological conditions.

Scientific Focus Area: Cell Biology

This page was last updated on Friday, March 26, 2021

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Download the 2018 Research Festival Schedule Overview (6 pages)

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Current Research Festival

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  • 2018
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