alexa Engraftment of ES-Derived Myogenic Progenitors in a Severe Mouse Model of Muscular Dystrophy
ISSN: 2157-7633

Journal of Stem Cell Research & Therapy
Open Access

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Commentary

Engraftment of ES-Derived Myogenic Progenitors in a Severe Mouse Model of Muscular Dystrophy

Antonio Filareto#, Radbod Darabi# and Rita C.R. Perlingeiro*

Lillehei Heart Institute, Department of Medicine, University of Minnesota, Minneapolis, MN

#These authors contributed equally to this work

Corresponding Author:
Rita C.R. Perlingeiro PhD
Lillehei Heart Institute, University of Minnesota
4-124 Nils Hasselmo Hall, 312 Church St SE
Minneapolis, MN 55455, USA
Tel: 612 625 4984
Fax: 612 624 8118
E-mail: [email protected]

Received Date: December 02, 2011; Accepted Date: January 04, 2012; Published Date: January 06, 2012

Citation: Filareto A, Darabi R, Perlingeiro RCR (2012) Engraftment of ES-Derived Myogenic Progenitors in a Severe Mouse Model of Muscular Dystrophy. J Stem Cell Res Ther S10:001. doi:10.4172/2157-7633.S10-001

Copyright: © 2012 Filareto A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Controlled myogenic differentiation of mouse embryonic stem cells by Pax3 combined with purification of PDGFαR+Flk-1- paraxial mesoderm results in the efficient in vitro generation of early skeletal myogenic progenitors. Upon transplantation into dystrophin-deficient mdx mice, these progenitors promote significant regeneration that is accompanied by improvement in muscle contractility. In this study, we aimed to raise the bar and assess the therapeutic potential of these cells in a more clinically relevant model of muscular dystrophy: the dystrophin-utrophin double-knockout (dKO) mouse. Unlike mdx mice, which display a mild phenotype, dKO mice are severely ill, displaying progressive muscle wasting, impaired mobility, and premature death. Here we show that in this very severe model of DMD, transplantation of Pax3-induced ES-derived skeletal myogenic progenitors results in significant engraftment as evidenced by the presence of Dystrophin+ myofibers with restoration of β-dystroglycan and eNOS within the sarcolemma, and enhanced strength of treated muscles. These findings demonstrate that ES-derived myogenic cell preparations are capable of engrafting in severely dystrophic muscle, and promote significant regeneration, providing a rationale for further studies on the potential therapeutic application of these cells in muscular dystrophies.

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