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细胞外矩阵连接体调节内皮原生细胞分泌体,以增强血管生成

Vanessa F C Dartora¹, Randy Carney², Aijun Wang³

¹Biomedical Engineering Graduate Group, University of California Davis, Davis, CA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, USA.

Acta biomaterialia

|February 15, 2025

概括

一种新型生物材料 (LDS) 通过调节其分泌体来增强内皮前代细胞 (EPC) 的再生潜力,促进血管生成以改善伤口愈合.

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
再生医学是一种再生医学.

背景情况:

伤口愈合严重依赖于血管新生,这是由内皮细胞 (EPC) 通过其秘密体促进的过程.
秘密体,包括蛋白质和细胞外囊泡 (EVs),含有信号分子,对组织修复至关重要.

研究的目的:

为了研究一个与原结合的蛋白质甘氨酸模拟剂 (LDS) 如何影响EPC秘密的蛋白质含量和EV的功能性质.
评估LDS修饰的EPC秘密体对增强血管生成和伤口愈合的治疗潜力.

主要方法:

利用高分辨率液体染色学-并联质谱学 (LC-MS/MS) 和生物信息分析来分析EPC秘密体.
通过对血管网络形成的生物测试,研究了LDS对EPC秘密和EVs的功能影响.
采用基因本体学 (GO) 丰富分析来识别与EV蛋白相关的关键生物过程.

主要成果:

LDS显著改变了EPC秘密体中的蛋白质表达,特别影响了血管生成和伤口愈合途径.
在LDS上的EPCs的分泌体和EV小部分显示了增强的血管网络形成.
在EV中发现增长因子和血管新生调节剂 (FGFR1,NRP1,ANGPT2) 的水平增加,导致亲血管新生效应.

结论:

LDS有效调节EPC分泌体,显著提高其血管生成潜力.
这种生物材料策略为不愈合和缺血性伤口提供了一个有前途的治疗方法.
工程生物材料-细胞相互作用可以控制EV组成,以增强组织再生.

关键词:

血管新生的产生.细胞的分泌物细胞的分泌物.细胞外囊泡中的细胞外囊泡.草甘治疗药物草甘治疗药物缺血症的再输液是如何发生的蛋白质组学是指蛋白质组学.再生医学是一种再生医学.

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