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© Aline Bonnet, Institut Pasteur
Coupe transversale d’embryon de caille transgénique mbGFP à 18somites, au niveau du futur bourgeon de membre antérieur avec un marquage noyaux (bleu), GFP (vert) et actine (rouge) / Transversal section of a mbGFP transgenic quail embryo at 18-somite stage, at forelimb level, with nuclei (blue), GFP (green) and actin (red) labelling
Publication : Nature

A common somitic origin for embryonic muscle progenitors and satellite cells

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature - 20 Apr 2005

Gros J, Manceau M, Thomé V, Marcelle C

Link to Pubmed [PMID] – 15843802

Nature 2005 Jun;435(7044):954-8

In the embryo and in the adult, skeletal muscle growth is dependent on the proliferation and the differentiation of muscle progenitors present within muscle masses. Despite the importance of these progenitors, their embryonic origin is unclear. Here we use electroporation of green fluorescent protein in chick somites, video confocal microscopy analysis of cell movements, and quail-chick grafting experiments to show that the dorsal compartment of the somite, the dermomyotome, is the origin of a population of muscle progenitors that contribute to the growth of trunk muscles during embryonic and fetal life. Furthermore, long-term lineage analyses indicate that satellite cells, which are known progenitors of adult skeletal muscles, derive from the same dermomyotome cell population. We conclude that embryonic muscle progenitors and satellite cells share a common origin that can be traced back to the dermomyotome.

http://www.ncbi.nlm.nih.gov/pubmed/15843802