首页> 美国卫生研究院文献>Journal of Veterinary Science >Comparing the osteogenic potential of canine mesenchymal stem cells derived from adipose tissues bone marrow umbilical cord blood and Whartons jelly for treating bone defects
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Comparing the osteogenic potential of canine mesenchymal stem cells derived from adipose tissues bone marrow umbilical cord blood and Whartons jelly for treating bone defects

机译:比较源自脂肪组织骨髓脐带血和沃顿氏胶的犬间充质干细胞在治疗骨缺损中的成骨潜力

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摘要

Alternative sources of mesenchymal stem cells (MSCs) for replacing bone marrow (BM) have been extensively investigated in the field of bone tissue engineering. The purpose of this study was to compare the osteogenic potential of canine MSCs derived from adipose tissue (AT), BM, umbilical cord blood (UCB), and Wharton's jelly (WJ) using in vitro culture techniques and in vivo orthotopic implantation assays. After canine MSCs were isolated from various tissues, the proliferation and osteogenic potential along with vascular endothelial growth factor (VEGF) production were measured and compared in vitro. For the in vivo assay, MSCs derived from each type of tissue were mixed with β-tricalcium phosphate and implanted into segmental bone defects in dogs. Among the different types of MSCs, AT-MSCs had a higher proliferation potential and BM-MSCs produced the most VEGF. AT-MSCs and UCB-MSCs showed greater in vitro osteogenic potential compared to the other cells. Radiographic and histological analyses showed that all tested MSCs had similar osteogenic capacities, and the level of new bone formation was much higher with implants containing MSCs than cell-free implants. These results indicate that AT-MSCs, UCB-MSCs, and WJ-MSCs can potentially be used in place of BM-MSCs for clinical bone engineering procedures.
机译:在骨组织工程领域中,已经广泛研究了替代骨髓(BM)的间充质干细胞(MSCs)的替代来源。这项研究的目的是使用体外培养技术和体内原位植入测定法,比较源自脂肪组织(AT),BM,脐带血(UCB)和沃顿胶冻(WJ)的犬MSC的成骨潜力。从各种组织中分离出犬骨髓间充质干细胞后,在体外测量并比较了其增殖和成骨潜能以及血管内皮生长因子(VEGF)的产生。为了进行体内分析,将源自每种组织的MSC与β-磷酸三钙混合并植入狗的节段性骨缺损中。在不同类型的MSC中,AT-MSC具有较高的增殖潜力,而BM-MSC产生最多的VEGF。与其他细胞相比,AT-MSC和UCB-MSC具有更大的体外成骨潜力。射线照相和组织学分析表明,所有测试的MSC具有相似的成骨能力,并且含有MSC的植入物比无细胞植入物的新骨形成水平高得多。这些结果表明,AT-MSC,UCB-MSC和WJ-MSC可能会代替BM-MSC用于临床骨工程程序。

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