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Biomed Mater:3D打印支架偶联BMP-2衍生肽可增强成骨作用

2020-10-03 MedSci原创 MedSci原创

三维(3D)打印技术为定制骨支架的外部形状和内部结构开辟了新的视角。在这项研究中,研究人员将一种源自骨形态发生蛋白2的低聚肽(SSVPT,Ser-Ser-Val-Pro-Thr)与多巴胺涂层共轭在3D

三维(3D)打印技术为定制骨支架的外部形状和内部结构开辟了新的视角。在这项研究中,研究人员将一种源自骨形态发生蛋白2的低聚肽(SSVPT,Ser-Ser-Val-Pro-Thr)与多巴胺涂层共轭在3D打印的聚乳酸(PLA)支架上,以增强成骨作用。

体外细胞实验表明,该支架对大鼠骨髓间充质干细胞(MSCs)的粘附和增殖具有高度的骨传导作用。此外,RT-PCR分析显示,该支架能够促进成骨相关基因的表达,如碱性磷酸酶(ALP)、Runt相关转录因子2(RUNX2)、骨钙素(OCN)和骨松素(OPN)等。大鼠颅骨缺损模型的显微CT三维重建图像显示,骨再生模式从一侧边缘向植入制备的生物多肽水凝胶的区域中心发生,表明骨再生速度明显加快。

 

综上所述,这项工作将为进一步探索生物活性支架的应用潜力提供基础。

 

原始出处:

 

Xiashiyao ZhangQi Lou,et al., Immobilization of BMP-2-derived peptides on 3D-printed porous scaffolds for enhanced osteogenesis. Biomed Mater. 2019 Nov 15;15(1):015002. doi: 10.1088/1748-605X/ab4c78.

 

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    2020-11-25 sunylz
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    2021-03-22 HNYYM
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    2020-10-05 zhaojie88
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