来自高度移动的环极素的动态RGD配体调节内皮细胞的扩散和增殖,以促进血管生成
Xuanshu Zhong1, Shulei Zhang1, Han Wang2
1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
International journal of biological macromolecules
|April 18, 2024
概括
聚洛他森 (PR) 上的动态RGD配体显著增强了内皮细胞 (EC) 的增殖和扩散. 这种动态的RGD-PR材料改善了体外血管生成和体内血管化,这表明了一种新的生物材料方法.
科学领域:
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
- 组织工程是组织工程.
背景情况:
- 开发先进的生物材料对于增强细胞行为和组织再生至关重要.
- 聚罗他 (PRs) 为生物材料应用提供独特的结构性质.
- 动态连接体呈现可以影响细胞物质相互作用.
研究的目的:
- 合成和表征动态的RGD功能化的多甲 (dRGD-PR).
- 研究动态RGD连接体对内皮细胞 (EC) 增殖,扩散和细胞周期进展的影响.
- 评估dRGD-PR.的体外血管生成和体内血管化能力.
主要方法:
- 通过乙烯点击反应将硫化RGD纳入PR的基-β-环氧.
- 在dRGD-PR和非动态RGD-PR (nRGD-PCL) 上培养内皮细胞进行比较分析.
- 评估细胞增殖,扩散,蛋白质表达 (FAK,p-FAK,p-AKT),细胞周期,体外血管生成和体内血管化 (CD31染色).
主要成果:
- 与nRGD-PCL相比,dRGD-PR显著增加了EC增殖和细胞扩散面积.
- 在dRGD-PR.上观察到FAK,p-FAK和p-AKT的表达升高,以及G2/M相细胞的增加.
- dRGD-PR在体外表现出优异的血管生成,并在体内增强了血管化 (增加了CD31阳性组织).
结论:
- 在PR上的动态RGD连接体运动增强了EC功能,超出了基本的粘附.
- 在观察到的改善中,RGD-integrin-FAK-AKT通路可能参与其中.
- dRGD-PR显示出在再生医学应用中促进血管化的巨大潜力.
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