In vivo generation of a mature and functional artificial skeletal muscle

Claudia Fuoco, Roberto Rizzi, Antonella Biondo, Emanuela Longa, Anna Mascaro, Keren Shapira-Schweitzer, Olga Kossovar, Sara Benedetti, Maria L. Salvatori, Sabrina Santoleri, Stefano Testa, Sergio Bernardini, Roberto Bottinelli, Claudia Bearzi, Stefano M. Cannata, Dror Seliktar, Giulio Cossu, Cesare Gargioli

Research output: Contribution to journalArticlepeer-review

Abstract

Extensive loss of skeletal muscle tissue results in mutilations and severe loss of function. In vitro-generated artificial muscles undergo necrosis when transplanted in vivo before host angiogenesis may provide oxygen for fibre survival. Here, we report a novel strategy based upon the use of mouse or human mesoangioblasts encapsulated inside PEG-fibrinogen hydrogel. Once engineered to express placental-derived growth factor, mesoangioblasts attract host vessels and nerves, contributing to in vivo survival and maturation of newly formed myofibres. When the graft was implanted underneath the skin on the surface of the tibialis anterior, mature and aligned myofibres formed within several weeks as a complete and functional extra muscle. Moreover, replacing the ablated tibialis anterior with PEG-fibrinogen-embedded mesoangioblasts also resulted in an artificial muscle very similar to a normal tibialis anterior. This strategy opens the possibility for patient-specific muscle creation for a large number of pathological conditions involving muscle tissue wasting.

Original languageEnglish
Pages (from-to)411-422
Number of pages12
JournalEMBO Molecular Medicine
Volume7
Issue number4
DOIs
Publication statusPublished - Apr 1 2015

Keywords

  • Artificial skeletal muscle
  • Mesoangioblasts
  • PEG-fibrinogen

ASJC Scopus subject areas

  • Molecular Medicine

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