Int J Nanomedicine:多孔Se @ SiO2纳米复合材料可加速骨折愈合

2019-06-21 不详 网络

骨联合的延迟或失败是全世界的重大临床挑战,并且据报道骨髓间充质干细胞(BMSC)提供了加速骨折愈合的有希望的方法。Se可以调节BMSC的增殖和分化。Se处理增强BMSCs的成骨细胞分化并抑制成熟破骨细胞的分化和形成。本研究旨在评估多孔Se@SiO2纳米复合材料对骨再生的影响及其潜在的生物学机制。氧化Se2-以形成Se量子点,然后我们使用Se量子点形成固体Se@SiO2纳米复合材料,然后用聚乙烯吡咯

骨联合的延迟或失败是全世界的重大临床挑战,并且据报道骨髓间充质干细胞(BMSC)提供了加速骨折愈合的有希望的方法。Se可以调节BMSC的增殖和分化。Se处理增强BMSCs的成骨细胞分化并抑制成熟破骨细胞的分化和形成。本研究旨在评估多孔Se@SiO2纳米复合材料对骨再生的影响及其潜在的生物学机制。

氧化Se2-以形成Se量子点,然后我们使用Se量子点形成固体Se@SiO2纳米复合材料,然后用聚乙烯吡咯烷酮(PVP)涂覆并在热水中蚀刻以合成多孔Se@SiO2纳米复合材料。使用XRD图来评估固体Se@SiO2纳米复合材料的相结构。通过扫描电子显微镜(SEM)评价了多孔Se @ SiO2纳米复合材料的形貌,并通过细胞计数试剂盒-8(CCK-8)测定了多孔Se @ SiO2纳米复合材料的生物相容性。然后,还进行释放测定。使用Transwell测定来确定响应于多孔Se@SiO2纳米复合材料的细胞迁移率。对于体外实验,将BMSC分成四组以检测活性氧(ROS)产生,细胞凋亡,碱性磷酸酶活性,钙沉积,基因活化和蛋白质表达。对于体内实验,构建大鼠的股骨骨折模型以评估多孔Se@SiO2纳米复合材料的成骨作用。

结果显示,体外干预多孔Se@SiO2纳米复合物可促进BMSCs的迁移和成骨分化,保护BMSCs免受H2O2诱导的成骨分化抑制。在体内,我们证明多孔Se@SiO2纳米复合材料使用大鼠股骨骨折模型加速骨折愈合。

综上所述,该研究结果表明,多孔Se@SiO2纳米复合材料促进大鼠骨髓间充质干细胞迁移和成骨分化,促进骨折愈合,多孔Se@SiO2纳米复合材料可为骨组织工程提供临床效益。

原始出处:

Li C, Wang Q, et al., Porous Se@SiO2 nanocomposite promotes migration and osteogenic differentiation of rat bone marrow mesenchymal stem cell to accelerate bone fracture healing in a rat model.Int J Nanomedicine. 2019 May 24;14:3845-3860. doi: 10.2147/IJN.S202741. eCollection 2019.

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    2020-05-21 kalseyzl
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    2020-02-27 jeanqiuqiu
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    2019-06-23 龙胆草

    学习谢谢分享

    0