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- W3004530210 abstract "Mesenchymal stem cells (MSCs)-derived exosomes are being increasingly focused as the new biological pro-regenerative therapeutic agents for various types of tissue injury. Here, we explored the potential of a novel exosome-based therapeutic application combined with a local fibrin delivery strategy for tendon repair. After discovering that bone marrow mesenchymal stem cells-derived exosomes (BMSCs-exos) promoted the proliferation, migration and tenogenic differentiation of tendon stem/progenitor cells (TSPCs) in vitro, we embedded BMSCs-exos in fibrin and injected it into the defect area of rat patellar tendon, and the results showed that the exosomes could be controlled-released from the fibrin, retained within the defect area, and internalized by TSPCs. BMSCs-exos embedded in fibrin significantly improved the histological scores, enhanced the expression of mohawk, tenomodulin, and type I collagen, as well as the mechanical properties of neotendon, and also promoted the proliferation of local TSPCs in vivo. Overall, we demonstrated the beneficial role of BMSCs-exos in tendon regeneration, and that fibrin-exosomes delivery system represents a successful local treatment strategy of exosomes. This study brings prospects in the potential application of exosomes in novel therapies for tendon injury. STATEMENT OF SIGNIFICANCE: Mesenchymal stem cells have been identified as a preferred approach in tissue regeneration. In this study, we reported bone marrow mesenchymal stem cells (BMSCs) promote the proliferation and migration of tendon stem/progenitor cells (TSPCs) via the paracrine signaling effect of the nanoscale exosomes. We also demonstrated that the application of BMSCs-derived exosomes might be a promising approach to activate the regenerative potential of endogenous TSPCs in tendon injured region, and fibrin-exosomes delivery system represents a successful local treatment strategy of exosomes." @default.
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- W3004530210 date "2020-04-01" @default.
- W3004530210 modified "2023-10-17" @default.
- W3004530210 title "Bone marrow mesenchymal stem cell-derived exosomes promote tendon regeneration by facilitating the proliferation and migration of endogenous tendon stem/progenitor cells" @default.
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- W3004530210 doi "https://doi.org/10.1016/j.actbio.2020.01.051" @default.
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