制造颗粒型脱细胞化细胞外基质水凝,用于伤口修复
Kun Zhang1, Noel Richard Prakash2, Jordan W Davern2
1Industry Engineering Department, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China; Centre for Cell Biology and Cutaneous Research, Blizard Institute, Queen Mary University of London, London E1 4NS, UK.
Acta biomaterialia
|October 2, 2025
概括
改性皮肤生物材料 (MA-dECM) 形成机械调节的水凝,通过增加血管化,加速小鼠的伤口愈合. 这些先进的材料显示出皮肤修复和再生的前景.
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.
- 再生医学是一种再生医学.
背景情况:
- 脱细胞化细胞外基质 (dECM) 生物材料模仿本地组织,但往往缺乏机械完整性和可调性.
- 机械性能有限,限制了dECM在先进组织工程中的应用.
研究的目的:
- 开发基于dECM的机械调节和加工的生物材料,用于改进组织工程应用.
- 研究修改后的dECM水凝对增强皮肤伤口愈合的潜力.
主要方法:
- 皮肤衍生的dECM被修改为甲基基功能组 (MA-dECM),以实现光交叉链接.
- 颗粒MA-dECM水凝通过碎片和压缩来制造,允许3D打印.
- 实验室细胞研究评估了内皮细胞的粘附性,活力和增殖.
- 在体内研究评估了MA-dECM凝在小鼠皮肤伤口愈合模型中的有效性.
主要成果:
- 在MA-dECM水凝中,弹性模量和可调节的机械性能增加了30倍.
- 颗粒MA-dECM水凝显示了剪切稀释行为,并且与挤出3D打印兼容.
- 内皮细胞在MA-dECM水凝中表现出良好的粘附性,活力和增殖.
- 应用MA-dECM凝显著加快了伤口关闭和增加了血管化 in vivo.
结论:
- 对dECM的甲基烯基基修饰提供了机械调整性和生物制造兼容性.
- MA-dECM 水凝保持生物活性,促进皮肤伤口愈合.
- 颗粒MA-dECM水凝是皮肤修复和再生的有希望的生物材料.
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