Gene:氧化石墨烯改性纳米纤维可增强多能干细胞的体外成骨分化能力

2019-06-10 不详 网络

外科医生在骨组织植入期间面临的若干限制,需要引入新的细胞-共聚物复合材料以用于骨组织工程。在该研究中,研究人员试图开发合适的纳米结构生物复合物,用于增强人诱导的多能干细胞(iPSC)的成骨分化。通过静电纺丝制备聚偏二氟乙烯-氧化石墨烯(PVDF-GO)纳米纤维,然后使用扫描电子显微镜,拉伸和活力测定法进行表征。之后,在三组中研究了iPSC的成骨分化,包括PVDF,PVDF-GO和组织培养板作为对照

外科医生在骨组织植入期间面临的若干限制,需要引入新的细胞-共聚物复合材料以用于骨组织工程。在该研究中,研究人员试图开发合适的纳米结构生物复合物,用于增强人诱导的多能干细胞(iPSC)的成骨分化。

通过静电纺丝制备聚偏二氟乙烯-氧化石墨烯(PVDF-GO)纳米纤维,然后使用扫描电子显微镜,拉伸和活力测定法进行表征。之后,在三组中研究了iPSC的成骨分化,包括PVDF,PVDF-GO和组织培养板作为对照组。

结果显示,在PVDF-GO上培养的iPSC的碱性磷酸酶活性和钙含量明显高于在其他组。此外,Runx2,骨钙素和骨粘连蛋白基因在PVDF-GO培养的iPSCs中上调,明显高于在PVDF和对照培养的细胞。最后,评估了骨钙蛋白和骨桥蛋白的表达,结果证实了与PVDF纳米纤维相比,PVDF-GO纳米纤维的骨诱导性更高。

综上所述,该研究结果表明,PVDF-GO纳米纤维具有巨大的骨诱导潜力,并且将iPSC-PVDF-GO纳米纤维构建体结合在一起可以是用于骨组织工程应用的合适的生物植入物。

原始出处:

Saburi E, Islami M, et al., In vitro osteogenic differentiation potential of the human induced pluripotent stem cells augments when grown on Graphene oxide-modified nanofibers. Gene. 2019 May 15;696:72-79. doi: 10.1016/j.gene.2019.02.028.

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    2019-07-20 cy0324
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    2019-06-12 zhaojie88