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Updated: May 15, 2025

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层次结构的粉样纤维的生物模拟内纤维矿化
Shuting Miao1, Jing Guo2, Yuexin Zhang1
1Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Polymeric Soft Matter, International Joint Research Center on Functional Fiber and Soft Smart Textile, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.
Advanced materials (Deerfield Beach, Fla.)
|April 8, 2025
概括
研究人员开发了一种新方法来制造氧酸盐稳定型粉样纤维 (HSAF) 用于硬组织再生. 这些仿生材料表现出与天然骨相似的机械性能,并促进小鼠显著的骨生长.
科学领域:
- 生物材料科学 生物材料科学
- 生物矿物化 生物矿物化
- 纳米技术 纳米技术
背景情况:
- 纤维内矿化对于生物硬组织和先进材料至关重要.
- 传统上,天然原纤维是有效的内纤维矿化唯一已知的基质.
- 从具有高矿化活性的常见蛋白质聚合物中开发有序的层次纤维仍然是一个挑战.
研究的目的:
- 开发一种创新的方法,以蛋白质为基础的纤维能够产生高内纤维矿化.
- 设计具有与本地硬组织相比较的机械性能和生物活性的仿生材料.
- 探索这些工程纤维在硬组织再生应用中的潜力.
主要方法:
- 采用了机械指导的两步转换过程.
- 阶段过渡的蛋白质纳米膜被转化为晶体,等级的粉样蛋白状纤维.
- 在工程纤维中控制了适应性间隙内的氧酸盐的生长和组织.
主要成果:
- 矿化酸稳定型粉样纤维 (HSAF) 的硬度为0.616 GPa,模量为19.06 GPa.
- HSAF表现出异常的生物活性,促进本地骨组织生长和进一步的纤维内矿化.
- 在小鼠头骨缺陷模型中,HSAF在8周后实现了76.9%的修复,超过了其他再生材料.
结论:
- 开发的方法成功地创建了具有受控的纤维内矿化和等级结构的HSAF.
- 高SAF具有机械性能和生物活性,适合硬组织再生.
- 这些发现为设计用于生物医学和工程应用的先进仿生材料提供了一个新的平台.
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