J Cell Physiol:脂肪来源的干细胞条件培养基在聚己内酯纳米纤维上生长时改善了诱导多能干细胞的成骨分化

2018-11-01 MedSci MedSci原创

考虑到常见的成骨生长因子无法使用干细胞移植给患者,许多研究正在寻找这些因子的替代品。最近,已经确定间充质干细胞(MSC)衍生的条件培养基(CM)在骨形成过程中含有有效因子。本研究中,研究人员探究了脂肪来源的MSC和聚己内酯(PCL)支架对人诱导的多能干细胞(iPSCs)的成骨分化潜能的协同作用。 通过静电纺丝制备支架,并通过扫描电子显微镜表征。使用3- [4,5-二甲基噻唑-2-基] -2,

考虑到常见的成骨生长因子无法使用干细胞移植给患者,许多研究正在寻找这些因子的替代品。最近,已经确定间充质干细胞(MSC)衍生的条件培养基(CM)在骨形成过程中含有有效因子。本研究中,研究人员探究了脂肪来源的MSC和聚己内酯(PCL)支架对人诱导的多能干细胞(iPSCs)的成骨分化潜能的协同作用。

通过静电纺丝制备支架,并通过扫描电子显微镜表征。使用3- [4,5-二甲基噻唑-2-基] -2,5-二苯基四唑溴化物评估在CM,PCL和两者存在下的iPSC增殖。然后,使用茜素红染色,钙含量,碱性磷酸酶活性和基因和蛋白质表达分析,在组织培养板和PC下在CM下培养iPSC成骨分化,并与成骨培养基相比较。

结果显示,在CM下培养时,iPSCs的增殖率增加,并且通过PCL培养可以协同增强其效果。成骨标志物评估显示,单独的CM可诱导成骨分化成iPSC,并且当与PCL纳米纤维支架组合时,该潜力显著增加。

综上所述,该研究结果表明,CM具有与普通成骨培养基几乎相同的成骨诱导特性,并且当移植给患者时它还可以潜在地用于干细胞。CM还可以通过延长缺损部位的细胞存活率以及加速愈合过程来提供帮助。
 
原始出处:

Soleimanifar F, Hosseini FS, et al., Adipose-derived stem cells-conditioned medium improved osteogenic differentiation of induced pluripotent stem cells when grown on polycaprolactone nanofibers. J Cell Physiol. 2018 Oct 30. doi: 10.1002/jcp.27697.

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    2018-11-03 zhaojie88