Int J Pharm:富含血小板的血浆纳入同轴电纺纳米纤维可用于骨组织工程

2018-06-22 MedSci MedSci原创

富血小板血浆(PRP)用于治疗骨组织修复,因为浓缩的血小板可释放大量的成骨相关生长因子。然而,由于从PRP释放的生长因子会迅速降解,故其临床应用受到限制。本研究旨在通过同轴静电纺丝将PRP衍生的生长因子掺入SF/PCL/PVA纳米纤维中以确定生长因子的释放曲线以及这些生长因子的存在如何增强纳米纤维的成骨能力。制备并表征含有不同比例的PRP和PVA的支架。然后,量化纳米纤维随时间的释放生长因子,并评

富血小板血浆(PRP)用于治疗骨组织修复,因为浓缩的血小板可释放大量的成骨相关生长因子。然而,由于从PRP释放的生长因子会迅速降解,故其临床应用受到限制。本研究旨在通过同轴静电纺丝将PRP衍生的生长因子掺入SF/PCL/PVA纳米纤维中以确定生长因子的释放曲线以及这些生长因子的存在如何增强纳米纤维的成骨能力。

制备并表征含有不同比例的PRP和PVA的支架。然后,量化纳米纤维随时间的释放生长因子,并评估MSCs的增殖、迁移和成骨分化。将PRP/MSCs/CS/β-TCP化合物移植到裸鼠背部的皮肤中,并通过治疗C57BL/6小鼠的颅骨缺损来评估含有PRP的核-壳NFS的体内成骨能力。通过免疫荧光染色、μ计算机断层摄影术(μCT)和组织学观察来分析这些治疗的结果。

结果表明,具有7:1的PRP-5%PVA溶液比率的同轴纳米纤维含有相对高量的PRP,并显示出更均匀的纤维直径分布。由于骨髓间充质干细胞(BMSCs)的增殖和迁移增加,支架的生物活性增强。当将细胞接种并培养在载有PRP的纳米纤维垫上时,II型胶原的表达也增加。此外,在植入8周后,PRP-NFS也促进了新骨形成。

总之,本研究表明,PRP的掺入可提高同轴纳米纤维垫的生物活性和成骨能力。这种纳米纤维垫在骨组织工程的各种应用中是有益的。

原始出处:

Cheng G, Du Y, et al., Incorporating Platelet-rich plasma into Coaxial Electrospun Nanofibers for Bone Tissue Engineering. Int J Pharm. 2018 Jun 7. pii: S0378-5173(18)30418-6. doi: 10.1016/j.ijpharm.2018.06.020. 

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    2019-03-28 jj000001
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    2018-06-22 虈亣靌

    好文.值得点赞!认真学习.应用于实践!谢谢分享给广大同好!

    0