Polymers :新蒙脱石涂层或可用于骨组织工程

2019-09-30 不详 网络

锌可以增强成骨细胞的骨形成并刺激成骨细胞分化,抑制破骨细胞前体细胞向破骨细胞的分化,并以剂量依赖的方式抑制致病细菌的生长。在这项研究中,作为一种新型锌资源,通过将PAA粉末悬浮在不同浓度的氯化锌(ZnCl2)溶液中,将新锰锌矿涂覆在聚(氨基酸)(PAA)上。由SEM,XRD,FT-IR和XPS表征。锌离子不断从涂层中释放出来,释放行为取决于ZnCl2浸入溶液的浓度和浸泡溶液的类型(SBF,PBS和

锌可以增强成骨细胞的骨形成并刺激成骨细胞分化,抑制破骨细胞前体细胞向破骨细胞的分化,并以剂量依赖的方式抑制致病细菌的生长。在这项研究中,作为一种新型锌资源,通过将PAA粉末悬浮在不同浓度的氯化锌(ZnCl2)溶液中,将新锰锌矿涂覆在聚(氨基酸)(PAA)上。

由SEM,XRD,FT-IR和XPS表征。锌离子不断从涂层中释放出来,释放行为取决于ZnCl2浸入溶液的浓度和浸泡溶液的类型(SBF,PBS和DMEM)。 Zn-PAA与小鼠骨髓干细胞(BMSC)通过TranswellTM板培养,结果表明,与PAA相比,Zn-PAA的相对细胞,碱性磷酸酶(ALP)活性和矿化度明显更高。此外,将Zn-PAA与RAW264.7细胞一起培养,结果表明Zn-PAA对破骨细胞的分化具有抑制作用。另外,Zn-PAA对金黄色葡萄球菌和大肠杆菌均表现出抗菌活性。

总之,这些发现表明,具有一定含量的新蒙脱石涂层可以促进成骨,抑制破骨细胞形成并抑制细菌,这表明了一种增强合成骨移植材料功能性的新方法,并确定了设计含锌骨移植物的基本原则。

原始出处:

Li S, Chen X, et al., Simonkolleite Coating on Poly(Amino Acids) to Improve Osteogenesis and Suppress Osteoclast Formation in Vitro. Polymers (Basel). 2019 Sep 16;11(9). pii: E1505. doi: 10.3390/polym11091505.

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    2019-12-07 anminleiryan
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    2020-09-02 zhouqu_8
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