Title |
Bioengineered constructs combined with exercise enhance stem cell-mediated treatment of volumetric muscle loss
|
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Published in |
Nature Communications, June 2017
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DOI | 10.1038/ncomms15613 |
Pubmed ID | |
Authors |
Marco Quarta, Melinda Cromie, Robert Chacon, Justin Blonigan, Victor Garcia, Igor Akimenko, Mark Hamer, Patrick Paine, Merel Stok, Joseph B. Shrager, Thomas A. Rando |
Abstract |
Volumetric muscle loss (VML) is associated with loss of skeletal muscle function, and current treatments show limited efficacy. Here we show that bioconstructs suffused with genetically-labelled muscle stem cells (MuSCs) and other muscle resident cells (MRCs) are effective to treat VML injuries in mice. Imaging of bioconstructs implanted in damaged muscles indicates MuSCs survival and growth, and ex vivo analyses show force restoration of treated muscles. Histological analysis highlights myofibre formation, neovascularisation, but insufficient innervation. Both innervation and in vivo force production are enhanced when implantation of bioconstructs is followed by an exercise regimen. Significant improvements are also observed when bioconstructs are used to treat chronic VML injury models. Finally, we demonstrate that bioconstructs made with human MuSCs and MRCs can generate functional muscle tissue in our VML model. These data suggest that stem cell-based therapies aimed to engineer tissue in vivo may be effective to treat acute and chronic VML. |
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Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 5 | 18% |
United Kingdom | 3 | 11% |
Japan | 2 | 7% |
Australia | 2 | 7% |
Ecuador | 1 | 4% |
France | 1 | 4% |
Canada | 1 | 4% |
Norway | 1 | 4% |
Unknown | 12 | 43% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 16 | 57% |
Scientists | 9 | 32% |
Science communicators (journalists, bloggers, editors) | 3 | 11% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 268 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 51 | 19% |
Student > Master | 35 | 13% |
Student > Bachelor | 35 | 13% |
Researcher | 27 | 10% |
Student > Doctoral Student | 23 | 9% |
Other | 38 | 14% |
Unknown | 59 | 22% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 51 | 19% |
Engineering | 46 | 17% |
Agricultural and Biological Sciences | 30 | 11% |
Medicine and Dentistry | 25 | 9% |
Materials Science | 7 | 3% |
Other | 33 | 12% |
Unknown | 76 | 28% |