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Author Wilting, Jörg ♦ Becker, Jürgen
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2006
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health
Subject Keyword Somite ♦ Avian embryo ♦ Angioblast ♦ Lymphangioblast ♦ VEGFR-2 ♦ Prox1 ♦ Neurology ♦ Cell Biology ♦ Neurosciences
Abstract Somites are sequentially formed, metameric units of the paraxial mesoderm of vertebrate embryos. They are the most obvious correlative of the segmental patterning along the cranio-caudal axis and transfer segmentation to other tissues such as the spinal nerves and dorsal aortic branches. Furthermore, somites are the source of numerous mesodermal cell types such as smooth and striated muscle, cartilage and tendon cells, and soft connective tissue. They also give rise to endothelial cells. Here we focus on the finding that two lineages of endothelial cells, blood vascular endothelial cells and lymphatic endothelial cells are derived from the somite. Their precursors, angioblasts, and lymphangioblasts, respectively, are born in the somite at different time points. Angioblasts are characterized by the expression of vascular endothelial growth factor receptor-2, whereas lymphangioblasts express the homeobox transcription factor Prox1. There seem to be two types of lymphangioblasts. Type 1 is derived from venous endothelium, while type 2 originates from mesenchymal precursor cells. The molecular networks of angioblast and lymphangioblast development and the relation between the two cell types and hematopoietic cells are discussed.
ISSN 03402061
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-09-19
Publisher Place Berlin/Heidelberg
e-ISSN 14320568
Journal Anatomy and Embryology
Volume Number 211
Issue Number 1
Page Count 7
Starting Page 57
Ending Page 63

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Source: SpringerLink