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脱细胞化纤维软骨性脚手架的微观结构和微机械性质

Jie Zhang¹, Liang Xie¹, Yilin She¹

¹State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu , Sichuan 610041, China.

ACS biomaterials science & engineering

|February 24, 2025

概括

脱细胞化纤维软骨外细胞矩阵 (dECM) 显示出组织修复的前景. 然而,脱细胞化改变了原结构,影响了脚手架的机制和功能.

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.
生物机械工程生物机械工程

背景情况:

来自纤维软骨的脱细胞化细胞外基质 (dECM) 为组织修复提供了生物仿真支架.
脱细胞化过程可以改变纤维软骨的原生微观结构和微机械性质,从而可能限制其功能应用.

研究的目的:

创建一个纤维软骨dECM微结构和微力学的分析图谱.
阐明脱细胞化如何影响纤维软骨dECM支架的宏观功能.

主要方法:

从关节 (TMJ) 盘中准备的纤维软骨dECM.
在生理,生理极限和超出极限的功能状态下评估了脚手架的耐用性.

主要成果:

脱细胞化显著改变了多层原体结构,包括解开原体,破坏纤维的D周期性,松纤维网络.
这些结构变化导致了机械模量降低和能量消耗在多个尺度,从分子到网络层面.
纤维软骨dECM的宏观功能因这些结构性损伤而显著变化.

结论:

脱细胞化引起的多尺度原结构损伤是纤维软骨dECM支架中功能缺陷的主要原因.
这项研究为优化dECM支架设计和评估其临床翻译潜力提供了关键数据.

关键词:

脱细胞化脱细胞化纤维软骨纤维的使用这是微机械的微机械.纳米印花的使用方法脚手架的脚手架是一个脚手架.临时关节的圆盘.

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