可注射的树突性水凝可用高能可见光治愈,用于骨再生中的细胞输送
Noemi Molina1, Francesco Torelli2, Samih Mohamed-Ahmed2
1Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-68, 100 44 Stockholm, Sweden.
概括
使用树突共聚物的注射水凝为骨再生提供了一个有前途的新支架. 这些生物材料支持骨髓介质干细胞 (BMSCs),并显示出先进的再生医学应用的潜力.
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.
- 组织工程是组织工程.
背景情况:
- 带有骨髓介质干细胞 (BMSCs) 的水凝对骨再生有希望.
- 移植方法对关键大小的骨缺陷有局限性.
- 可以注射的支架在现场骨修复方面具有优势.
研究的目的:
- 开发一种可注射的骨架水凝,使用高能可见光诱导的乙烯合 (TEC).
- 研究以树突共聚合物为基础的凝用于骨再生的特性和细胞相容性.
- 评估这些水凝作为再生医学多功能软生物材料的潜力.
主要方法:
- 由PEG和bis-MPA构建的分支基基功能化树突-线性树突 (DLD) 共聚合物.
- 使用DLD共聚物和硫化交叉连接剂配制的注射用水凝,通过HEV光诱导TEC固化.
- 评估了水凝的稳定性,胀,模量,体外细胞与BMSCs的细胞相容性,以及沉积.
主要成果:
- 水凝的特性 (稳定性,膨胀,模量) 可以通过不同的DLD生成和交叉链接器特性来调整.
- 水凝平台表现出优异的BMSC可行性和相互作用,与GelMA相比.
- 最佳水凝显示出与GelMA相似的细胞代谢活性,以及在骨质原生介质中显著的沉积,具有高的功能化能力.
结论:
- 基于bis-MPA的树突性水凝代表了可注射骨架的多功能平台.
- 通过HEV光固化TEC化学,可以轻松地在现场形成凝.
- 这些水凝显示出再生医学应用的巨大潜力,包括骨组织工程.
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