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用BMP结合的多硫酸刷来控制生长因子呈现和调节矩阵改造

Metzli Hernandez Marchena¹, Elisa Lambert², Bojana Bogdanović²

¹School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, U.K.

ACS applied materials & interfaces

|July 29, 2024

概括

仿生多硫甲酸盐 (PSPMA) 刷提供稳定捕获骨形态遗传蛋白 (BMPs) 用于组织修复. 这些GAG模拟接口增强BMP2结合和矩阵沉积,推进再生医学支架.

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.
表面化学表面化学

背景情况:

骨形态遗传蛋白 (BMP) 对于组织修复至关重要,但需要在生物材料上稳定固定.
氨酸是一种甘氨酸甘氨酸 (GAG),捕获BMP,但稳定性和材料兼容性不佳.
开发稳定的,生物模拟接口BMPs是必要的先进的再生医学.

研究的目的:

开发和描述聚硫甲酸盐 (PSPMA) 刷作为稳定,生物模拟GAG接口用于BMP捕获.
研究BMP2和BMP4在PSPMA刷上的结合能力和稳定性.
为了评估BMP2-功能化的PSPMA刷对细胞行为和矩阵沉积的影响.

主要方法:

通过电子转移聚合再生的表面启动激活器,用于PSPMA刷子生长.
圆测量,X射线光电子光谱 (XPS) 和富里埃变换红外光谱 (FTIR) 用于表征.
表面等离子体共振 (SPR) 和石英晶体微平衡与散射监测 (QCM-D) 用于BMP结合分析.
用皮肤纤维细胞培养的细胞培养研究来评估矩阵沉积.

主要成果:

成功合成了PSPMA刷子,并对胀和表面化学特性进行了鉴定.
在PSPMA刷机中,BMP2和BMP4的结合稳定且高密度,刷机架构显著影响容量.
BMP2在厚厚的,密集的刷上显示出初级吸附,确保受体的可访问性.
具有BMP2功能的PSPMA刷在纤维细胞培养物中显著增强了矩阵沉积.

结论:

对于稳定的BMP捕获,PSPMA刷可以作为有效的仿生GAG接口.
这些刷子为再生医学中的支架工程提供了一个有希望的平台.
通过PSPMA刷子稳定的BMP2固定可以积极影响细胞反应和组织再生.

关键词:

在ATRP中使用ATRP.这就是BMP2的原因.仿生生物学的仿生学聚合物刷子聚合物刷子硫酸盐的使用方法

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