Arch Craniofac Surg:3D打印聚己内酯/β-磷酸三钙支架对脂肪组织和骨髓干细胞成骨分化的影响

2018-10-13 MedSci MedSci原创

自体骨移植物具有若干局限性,包括供体部位问题和骨量不足。为了解决这些局限性,正在积极进行骨再生研究。在这项研究中,我们研究了三维(3D)打印聚己内酯(PCL)/磷酸三钙(TCP)支架对脂肪组织来源的干细胞(ADSCs)和骨髓干细胞(BMSCs)的成骨分化潜能的影响。 我们在细胞培养后的第一天和第十天以及第四周研究了成骨分化的程度。通过3-(4,5-二甲基噻唑-2-基)-5-(3-羧基甲氧基苯

自体骨移植物具有若干局限性,包括供体部位问题和骨量不足。为了解决这些局限性,正在积极进行骨再生研究。在这项研究中,我们研究了三维(3D)打印聚己内酯(PCL)/磷酸三钙(TCP)支架对脂肪组织来源的干细胞(ADSCs)和骨髓干细胞(BMSCs)的成骨分化潜能的影响。

我们在细胞培养后的第一天和第十天以及第四周研究了成骨分化的程度。通过3-(4,5-二甲基噻唑-2-基)-5-(3-羧基甲氧基苯基)-2-(4-磺基苯基)-2H-四唑鎓测定法评估3D打印的PCL/β-TCP支架的细胞毒性,在成骨分化分析之前。将ADSCs和BMSCs分为三组:C组,仅培养细胞;M,在3D打印的PCL/β-TCP支架中培养细胞;D,在具有骨分化培养基的3D打印PCL/β-TCP支架中培养的细胞。进行碱性磷酸酶(ALP)活性测定,von Kossa染色,逆转录聚合酶链反应(RT-PCR)和蛋白质印迹以进行比较分析。

结果显示,ALP检测和von Kossa染色显示,与C组相比,M组成骨分化水平较高。RT-PCR显示M组基因表达高于C组,表明与C组相比,M组成骨分化更多。根据Western印迹结果,M组中参与骨化的蛋白质的表达水平更高。

与对照组相比,在3D打印的PCL/TCP支架中培养的间充质基质细胞(MSCs)中的成骨分化增加。在3D打印的PCL/TCP支架中培养的MSCs的成骨分化活性低于在骨分化培养基中在支架上培养的细胞的成骨分化活性。

总之,这些结果表明3D打印的PCL/TCP支架促进了MSCs的成骨分化,并且可以广泛用于骨组织工程。

原始出处:

Hannara Park, Jin Soo Kim, et al., Effects of three-dimensionally printed polycaprolactone/β-tricalcium phosphate scaffold on osteogenic differentiation of adipose tissue- and bone marrow-derived stem cells. Arch Craniofac Surg. 2018 Sep; 19(3): 181–189.

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    2019-09-06 HinsMax
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    2018-10-15 zhaojie88