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含有丝纤维蛋白的双相骨模仿结构增强了大鼠细分缺陷中的骨再生

Amin Ebrahimi Sadrabadi¹, Seyed Shahriar Arab², Amir Kamali³

¹Department of Tissue Engineering, Faculty of Basic Sciences and Advanced Technologies in Medicine, Royan Institute, ACECR, Tehran, Islamic Republic of Iran; Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.

Biomaterials advances

|December 21, 2025

概括

这项研究开发了一种新的双相骨模仿结构,使用脱细胞化细胞外基质 (dECM) 和丝纤维蛋白 (SFp) . 在大鼠模型中,dECM/SFp/CPC构造显著增强了骨再生.

科学领域:

生物材料科学生物材料科学
再生医学是一种再生医学.
组织工程是组织工程.

背景情况:

进步的骨组织工程需要模仿本地组织微观架构和生物功能的生物材料.
现有的生物材料往往难以提供结构支持和有效的骨再生的生物线索.

研究的目的:

开发和评估一个双相骨模仿结构,集成脱细胞化细胞外基质 (dECM),酸盐水泥 (CPC) 和定制丝纤维蛋白 (SFp) .
通过结合生物和机械特性来评估构造物增强骨再生的潜力.

主要方法:

用dECM/CPC水凝层为结构支和内部SFp功能化dECM水凝用于细胞活动的双相结构的制造.
使用动态光散射 (DLS) 和循环二极化 (CD) 光谱学对SFp的表征.
使用MTT试验和基因表达分析 (Col1,Opn,Ocn,CD31) 进行细胞毒性的体外评估.
在使用微型CT和X射线成像的老鼠半径缺陷模型中对骨再生的体内评估.

主要成果:

在测试度中,SFp体表现出明显的二次结构和非毒性特征.
SFp1显著上调了关键的骨再生标志物 (Col1,Opn,Ocn) 和CD31基因表达.
在12周后,dECM/SFp/CPC构造在老鼠模型中显示出显著的骨再生.

结论:

开发的双相dECM/SFp/CPC结构有效地将dECM和SFp的生物线索与CPC的机械强度相结合.
这种先进的生物材料在组织工程应用中增强骨再生方面显示出相当大的前景.

关键词:

生物模拟性脚手架是一种生物模拟性脚手架.酸水泥中的酸.脱细胞化的细胞外矩阵.丝纤维素酸是一种丝纤维素.组织工程是组织工程.

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