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Bone and cartilage formation by skeletal muscle derived cells.

M Mastrogiacomo1, A R Derubeis, R Cancedda

  • 1Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy. milena.mastrogiacomo@istge.it

Journal of Cellular Physiology
|March 4, 2005
PubMed
Summary

Researchers discovered skeletal muscle-derived cells (SMDCs) can form bone and cartilage. These cells offer a potential alternative to bone marrow stromal cells (BMSCs) for regenerative medicine applications.

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Area of Science:

  • Regenerative Medicine
  • Cell Biology
  • Tissue Engineering

Background:

  • Adult bone regeneration relies on osteoprogenitor cells, primarily from bone marrow.
  • Alternative sources of osteoprogenitor cells in other adult tissues are being investigated.
  • Skeletal muscle is explored as a potential source of these cells.

Purpose of the Study:

  • To identify and characterize osteoprogenitor cells from human skeletal muscle.
  • To investigate the differentiation potential of these skeletal muscle-derived cells (SMDCs).

Main Methods:

  • Isolation of plastic-adhering cells from human skeletal muscle biopsies.
  • Characterization of cell morphology, mesenchymal origin markers, and myogenic markers.
  • Assessment of osteogenic and adipogenic differentiation potential in vitro.

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  • In vivo bone formation and cartilage formation assays.

    • Main Results:

    • Skeletal muscle-derived cells (SMDCs) exhibited fibroblast-like morphology and mesenchymal markers.
    • SMDCs expressed early osteogenic commitment markers and differentiated into bone and cartilage.
    • These cells also showed adipogenic potential and formed mineralized bone matrix in vivo.
    • SMDCs demonstrated multipotency, similar to bone marrow stromal cells (BMSCs).

    Conclusions:

    • Human skeletal muscle contains a population of multipotent cells (SMDCs).
    • SMDCs can differentiate into osteogenic, chondrogenic, and adipogenic lineages.
    • These findings suggest SMDCs as a promising alternative to BMSCs for regenerative therapies.