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Two endothelial cell lines derived from the somite.

Jörg Wilting1, Jürgen Becker

  • 1Zentrum für Kinderheilkunde und Jugendmedizin, Pädiatrie I, Georg-August-Universität Goettingen, Robert-Koch-Strasse 40, 37075, Goettingen, Germany. joerg.wilting@med.uni-goettingen.de

Anatomy and Embryology
|October 19, 2006
PubMed
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Vertebrate embryos

Area of Science:

  • Developmental biology
  • Embryology
  • Cell biology

Background:

  • Somites are segmented blocks of paraxial mesoderm in vertebrate embryos.
  • They establish segmental patterns along the cranio-caudal axis.
  • Somites give rise to various mesodermal cell types, including endothelial cells.

Purpose of the Study:

  • To investigate the origin of blood vascular and lymphatic endothelial cells from somites.
  • To identify the molecular markers and developmental timing of endothelial precursor cells within somites.

Main Methods:

  • Analysis of gene expression patterns in somite-derived cells.
  • Characterization of angioblasts and lymphangioblasts.
  • Investigation of precursor cell origins and differentiation pathways.

Related Experiment Videos

Main Results:

  • Two distinct endothelial cell lineages, blood vascular and lymphatic, originate from somites.
  • Angioblasts express vascular endothelial growth factor receptor-2.
  • Lymphangioblasts express the transcription factor Prox1 and include two subtypes with different origins.

Conclusions:

  • Somites are a crucial source for both blood vascular and lymphatic endothelial cells.
  • Distinct molecular cues and developmental timing regulate the formation of these two endothelial lineages from somite precursors.
  • Understanding these pathways is key to comprehending embryonic vascular development.