ZFIN ID: ZDB-PUB-140513-214
SoxF factors and Notch regulate nr2f2 gene expression during venous differentiation in zebrafish
Swift, M.R., Pham, V.N., Castranova, D., Bell, K., Poole, R.J., Weinstein, B.M.
Date: 2014
Source: Developmental Biology   390: 116-25 (Journal)
Registered Authors: Castranova, Dan, Pham, Van, Swift, Matthew Russell, Weinstein, Brant M.
Keywords: COUP-TFII, Cardinal vein, Dorsal aorta, Nr2f2, Zebrafish
MeSH Terms:
  • Animals
  • Blood Vessels/embryology*
  • COUP Transcription Factor II/genetics
  • COUP Transcription Factor II/metabolism*
  • Cell Differentiation/physiology
  • Cloning, Molecular
  • DNA Primers/genetics
  • Gene Expression Regulation, Developmental/genetics
  • Gene Expression Regulation, Developmental/physiology*
  • Immunohistochemistry
  • In Situ Hybridization
  • Microscopy, Confocal
  • Real-Time Polymerase Chain Reaction
  • Receptors, Notch/metabolism*
  • SOXF Transcription Factors/genetics
  • SOXF Transcription Factors/metabolism*
  • Signal Transduction/physiology*
  • Transgenes/genetics
  • Veins/cytology
  • Veins/embryology
  • Zebrafish/embryology*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
PubMed: 24699544 Full text @ Dev. Biol.
Initial embryonic determination of artery or vein identity is regulated by genetic factors that work in concert to specify the endothelial cell׳s (EC) fate, giving rise to two structurally unique components of the circulatory loop. The Shh/VEGF/Notch pathway is critical for arterial specification, while the orphan receptor nr2f2 (COUP-TFII) has been implicated in venous specification. Studies in mice have shown that nr2f2 is expressed in venous but not arterial ECs, and that it preferentially induces markers of venous cell fate. We have examined the role of nr2f2 during early arterial-venous development in the zebrafish trunk. We show that expression of a subset of markers of venous endothelial identity requires nr2f2, while the expression of nr2f2 itself requires sox7 and sox18 gene function. However, while sox7 and sox18 are expressed in both the cardinal vein and the dorsal aorta during early trunk development, nr2f2 is expressed only in the cardinal vein. We show that Notch signaling activity present in the dorsal aorta suppresses expression of nr2f2, restricting nr2f2-dependent promotion of venous differentiation to the cardinal vein.