工程形状来克服收缩:聚合物原混合体在先进皮肤替代品中的作用
Christopher Y Leon-Valdivieso1,2, Audrey Bethry1, Coline Pinese1,3
1Polymers for Health and Biomaterials, IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
Journal of biomedical materials research. Part A
|October 9, 2024
概括
混合结构将原蛋白与富含多caprolactone的支架结合起来,抵抗细胞介导的收缩,提供稳定的皮肤等价物. 在组织工程应用中,PCLLA 90/10 支架显示出有前途.
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.
- 聚合物科学 聚合物科学
背景情况:
- 原体凝是标准的皮肤对应物,但患有快速细胞媒介收缩,限制功能性组织形成.
- 机械不稳定性和脚手架的快速降解阻碍了强大的皮肤替代品的开发.
- 建议将原蛋白与可降解的聚合物支架集成的混合结构 (HCs) 增强机械稳定性和组织集成.
研究的目的:
- 选各种基于多烯酸 (PCL) 和多D,L-乳化物 (PLA50) 的支架,以创建稳定的HCs.
- 评估不同聚合物支架的可加工性,抵抗细胞媒介收缩和降解.
- 确定最佳的混合结构,以改善纤维细胞行为和潜在的体内应用.
主要方法:
- 对同聚合物 (PCL,PLA50),混合物 (PCL/PLA50) 和共聚物 (PCLLA50) 进行选,用于脚手架制造.
- 通过电和3D打印处理脚手架,然后与原凝集成,形成HCs.
- 评估HCs对细胞媒介收缩,支架降解,纤维细胞分布和细胞增殖的抵抗力.
主要成果:
- 具有较高PCL含量的支架表现出更好的结构稳定性和易于加工.
- 基于poly ((D,L-乳酸-co-caprolactone) 90/10 (PCLLA50 90/10) 的HC显示出优越的抗收缩能力 (面积减少5%-17%).
- 与只有原蛋白的对照组相比,PCLLA50 90/10 HCs促进了更好的纤维细胞分布,肌纤维细胞分化和细胞增殖.
结论:
- 结合PCLLA50 90/10支架的混合结构在机械稳定性和细胞反应方面比传统的原体凝显著改善.
- 电PCLLA50 90/10支架在细胞增殖和整体性能方面表现出显著的优势.
- 这些发现突出了PCLLA50 90/10基HCs作为未来体内组织工程研究的有希望的候选人.
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