Association of mesenchymal stem cells derived from bone marrow and adipose tissue enhances bone repair in rat calvarial defects
Abstract
Aim: We evaluated the bone repair induced by MSCs from adipose tissue (AT-MSCs) and bone marrow (BM-MSCs) injected into rat calvarial defects at two time points. Methods & results: Both cell populations expressed MSC surface markers and differentiated into adipocytes and osteoblasts. μCT showed that the combination of cells from distinct sources exhibited synergistic effects to increase bone repair with an advantage when BM-MSCs were injected prior to AT-MSCs. The higher osteogenic potential of these MSC combinations was demonstrated using an in vitro coculture system where BM-MSCs and AT-MSCs association induced higher ALP activity in MC3T3-E1 cells. Conclusion: Our findings may drive new approaches to treat bone defects and shed light on the complexity of the mechanisms involved in bone regeneration.
Plain language summary
We evaluated the bone repair induced by cells that can develop into different types of cells (stem cells) derived from fat and spongy tissue inside the large bones and injected into defects created in rat skulls. Cells derived from both tissues developed into fat cells and bone-forming cells. The combination of cells from fat and spongy tissue exhibited cooperative effects to increase bone repair with an advantage when cells from spongy tissue were injected prior to cells from fat. Our findings may contribute to stablish new therapies based on the use of cells to treat large bone defects.
Papers of special note have been highlighted as: • of interest; •• of considerable interest
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