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Development. 2018 Mar 19;145(6). pii: dev157339. doi: 10.1242/dev.157339.

Recapitulating early development of mouse musculoskeletal precursors of the paraxial mesoderm in vitro.

Author information

1
Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS (UMR 7104), Inserm U964, Université de Strasbourg, Illkirch Graffenstaden 67400, France.
2
Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA.
3
Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
4
Harvard Stem Cell Institute, Boston, MA 02115, USA.
5
Anagenesis Biotechnologies, Parc d'innovation, Illkirch Graffenstaden 67400, France.
6
Department of Developmental and Stem Cell Biology, Institut Pasteur, Paris 75015, France.
7
CNRS UMR 3738, Institut Pasteur, Paris 75015, France.
8
Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS (UMR 7104), Inserm U964, Université de Strasbourg, Illkirch Graffenstaden 67400, France pourquie@hms.harvard.edu.

Abstract

Body skeletal muscles derive from the paraxial mesoderm, which forms in the posterior region of the embryo. Using microarrays, we characterize novel mouse presomitic mesoderm (PSM) markers and show that, unlike the abrupt transcriptome reorganization of the PSM, neural tube differentiation is accompanied by progressive transcriptome changes. The early paraxial mesoderm differentiation stages can be efficiently recapitulated in vitro using mouse and human pluripotent stem cells. While Wnt activation alone can induce posterior PSM markers, acquisition of a committed PSM fate and efficient differentiation into anterior PSM Pax3+ identity further requires BMP inhibition to prevent progenitors from drifting to a lateral plate mesoderm fate. When transplanted into injured adult muscle, these precursors generated large numbers of immature muscle fibers. Furthermore, exposing these mouse PSM-like cells to a brief FGF inhibition step followed by culture in horse serum-containing medium allows efficient recapitulation of the myogenic program to generate myotubes and associated Pax7+ cells. This protocol results in improved in vitro differentiation and maturation of mouse muscle fibers over serum-free protocols and enables the study of myogenic cell fusion and satellite cell differentiation.

KEYWORDS:

Bioengineering; Paraxial mesoderm; Pluripotent stem cells; Presomitic mesoderm; Satellite cell; Skeletal muscle

PMID:
29555813
DOI:
10.1242/dev.157339
[Indexed for MEDLINE]
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