用分子动力学模拟评估的酸盐生物活性玻璃的结构和特性上的B/Si摩尔比的影响
Muyan Qin1, Limei Li2, Jingxin Ding1
1School of Materials Science and Engineering, Tongji University, Shanghai 201804, People's Republic of China.
Biomedical materials (Bristol, England)
|July 21, 2023
概括
分子动力学模拟揭示了酸盐生物活性玻璃中的B/Si比如何影响离子释放和生物活性. 优化的玻璃成分促进细胞增殖和骨质分化,这对于骨再生至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 计算化学计算化学
背景情况:
- 优化新型生物活性玻璃成分是一项挑战.
- 计算机模拟为材料设计提供了一个强大的策略.
- 了解结构-属性关系是生物活性玻璃开发的关键.
研究的目的:
- 用分子动力学模拟分析B/Si摩尔比对酸盐生物活性玻璃 (BBG) 结构的影响.
- 研究结构变化如何影响离子释放和生物效应.
- 为了将玻璃网强度与离子释放率和生物性能相关联.
主要方法:
- 用分子动力学模拟来建模BBG结构.
- 计算了一个理论结构描述符 (Fnet) 来评估玻璃网的强度.
- 为了评估生物效应,进行了体外矿化和细胞实验.
主要成果:
- 在Fnet和各种溶液中B和Mg离子的释放率之间建立了线性关系.
- 所有测试的BBG都在体外证明了酸酸盐的形成.
- 具有1.25B组成的BBG样本显著促进了间酶体干细胞的增殖和骨质分化.
结论:
- B/Si比关键调节BBG的结构和离子释放.
- 从BBG中释放的早期Mg可能会增强骨质基因表达和细胞活性.
- 优化的BBG成分对骨组织工程应用具有前景.
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