自组装的丝纤维蛋白水凝具有精确设计的粘性弹性,可增强BMSC体生成和软骨修复
Danyu Yao1, Zixuan Xia2, Jin Zhou3
1School of Automation, Hangzhou Dianzi University, Hangzhou, Zhejiang, China; Zhejiang Key Laboratory of Medical Additive Manufacturing and Information Fusion, Hangzhou, 310018, China.
International journal of biological macromolecules
|January 29, 2026
概括
这项研究开发了可调节的丝纤维蛋白水凝,用于软骨修复. 对粘弹性质的精确控制增强了骨髓 stromal 细胞的分化,并促进了软骨再生.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 再生医学是一种再生医学.
背景情况:
- 关节软骨损伤在生物医学中是一个重大挑战.
- 丝纤维蛋白水凝为软骨修复提供生物相容性,但缺乏可调节的粘弹性特性.
- 分离弹性模量和应力放松率对于软骨再生中的细胞命运调节至关重要.
研究的目的:
- 为了在丝纤维蛋白水凝中精确控制弹性模量和应力放松率.
- 阐明自组装对水凝粘性弹性的影响.
- 建立基于丝纤维素的水凝系统,具有可独立调节的软骨再生特性.
主要方法:
- 调节丝纤维素自组装以控制水凝的粘弹性特性.
- 在实验室中评估丝纤维素粘弹性对骨髓 stromal 细胞 (BMSC) 不同化的影响.
- 在体内使用开发的水凝系统评估软骨再生.
主要成果:
- 在丝纤维蛋白水凝中实现了弹性模量和应力放松率的独立可调性.
- 低弹性模量 (~6.5 kPa) 和快速应力放松 (12 秒) 的组合显著上调了与软骨相关的基因 (SOX9,COL2A1) 和糖氨基甘氨酸 (GAG) 分泌.
- 在体内研究表明,软骨再生增强,并具有平稳的整合和与本地类似的组织结构.
结论:
- 通过自我组装调制,可以精确控制丝纤维蛋白水凝粘性弹性.
- 可调的丝纤维蛋白水凝促进BMSC分化和软骨再生.
- 这项工作为在组织工程中开发先进的软骨修复材料提供了基础.
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