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Evaluation of Canine Bone Marrow-derived Mesenchymal Stem Cells After Long-term Cryopreservation

机译:长期冷冻保存后犬骨髓间充质干细胞的评价

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Autologous bone marrow-derived mesenchymal stem cell (BMSCs)-based therapies show great potential in regenerative medicine. However, long-term storage and preservation of BMSCs for clinical use is still a great clinical challenge. The present study aimed to analyze the effect of long-term cryopreservation on the regenerative ability of BMSCs. After cryopreservation of BMSCs from beagle dogs for three years, cell viability, and quantitative analysis of alkaline phosphatase (ALP) activity, surface adherence, and mineralized nodule formation were analyzed. BMSCs in cell-scaffold complex were then implanted into nude mice. There was no significant difference in cell viability and ALP activity between osteogenic differentiation and non-osteogenic differentiation of BMSCs, and BMSCs in cell-scaffold complex retained osteogenic differentiation ability in vivo. These results indicate that long-term cryopreserved BMSCs maintain their have capacity to contribute to regeneration.
机译:自体骨髓间充质干细胞(BMSCs)为基础的疗法在再生医学中显示出巨大的潜力。然而,用于临床用途的BMSC的长期储存和保存仍然是巨大的临床挑战。本研究旨在分析长期冷冻保存对骨髓间充质干细胞再生能力的影响。将比格犬的BMSC冷冻保存三年后,分析了细胞活力,并对碱性磷酸酶(ALP)活性,表面粘附和矿化的结节形成进行了定量分析。然后将细胞-支架复合物中的BMSCs植入裸鼠中。 BMSCs的成骨分化和非成骨分化之间在细胞活力和ALP活性上无显着差异,并且细胞-支架复合物中的BMSC在体内保留了成骨分化能力。这些结果表明,长期冷冻保存的BMSC保持其有能力促进再生。

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