形状记忆的聚合物支架 - - 在体外骨质生成犬类多能干细胞的实用性
Shelby B Gasson1, Lauren K Dobson1, Michaela R Pfau-Cloud2
1Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Journal of biomedical materials research. Part B, Applied biomaterials
|November 26, 2024
概括
可生物降解的聚乙烯 (PCL) 形状记忆聚合物支架在骨缺陷修复方面表现有前途. 狗细胞在这些PCL支架上显示出良好的生长和骨形成潜力,为未来的动物和人类研究铺平了道路.
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.
- 整形外科工程 整形外科工程
背景情况:
- 生物降解形状记忆聚合物 (SMP) 脚手架由聚乙烯 (PCL) 制成,为关键大小的骨缺陷提供压缩解决方案.
- 将SMP支架转化为临床用途需要在大型动物模型中的验证,由于与人类的骨科相似之处,犬类作为相关模型.
研究的目的:
- 在两个不同的SMP支架组合上评估狗多能肌细胞 (cMSCs) 的体外细胞相容性和骨质分化.
- 通过评估支架适合细胞生长和骨形成,为未来的犬体体内研究做准备.
主要方法:
- 测试了两种SMP支架类型:PCL-only (PCL-diacrylate,PCL-DA) 和PCL-DA和poly(L-乳酸的半互穿透网络 (半IPN) (PCL:PLLA).
- 狗骨髓衍生MSCs (cMSCs) 在21天内对两个支架类型的附着,增殖和骨质分化进行了评估.
主要成果:
- 两种PCL和PCL:PLLA支架都表现出良好的细胞相容性,附着性和cMSCs的扩散.
- 与PCL:PLLA支架相比,PCL支架在体外支持更好的早期和晚期骨质生成.
- 在21天内,cMSCs成功地在两个脚手架类型上沉积了矿化细胞外基质.
结论:
- 经过测试的SMP支架适用于体外犬类多能肌细胞的附着,增殖和骨质分化.
- 这些发现代表了对犬体体内研究和人类骨缺陷修复的潜在临床转换的关键进展.
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