Cell delivery therapeutics for musculoskeletal regeneration

Abstract

The last decade has witnessed the development of cell-based therapy as a major biomedical research area, including the treatment of musculoskeletal diseases. Both differentiated and undifferentiated stem cells have been used as starting cell sources. In particular, the use of multipotent adult mesenchymal stem cells holds great promise for future therapeutic strategies. In addition to the cell type used, the cell delivery system is also of critical importance in cell-based therapy. Cell delivery may be achieved by direct cell injection or by grafting engineered constructs derived by cell seeding into natural or synthetic biomaterial scaffolds. While direct injection is the most direct and convenient means of cell delivery, the latter approach is capable of producing three-dimensional engineered tissues with mechanical properties compatible with those of various musculoskeletal tissues. This review will focus on the functional approach of using biomaterial scaffold materials as cell carriers for musculoskeletal applications, as well as the use of cell-based gene therapy for tissue engineering and regeneration.

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