复合聚烯酸/聚烯酸泡具有层次性多孔结构,用于预血管化的组织工程
Jana Musílková1, Miloš Beran2, Antonín Sedlář1
1Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 00 Prague, Czech Republic.
International journal of molecular sciences
|April 17, 2025
概括
具有可调节毛孔性的新型聚酸/聚烯酸支架可增强组织工程应用的细胞内生长和血管化. 这些材料在软和硬组织再生方面都很有前途.
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.
- 再生医学是一种再生医学.
背景情况:
- 现代组织工程需要可降解的支架,以支持细胞生长和血管化.
- 实现相互连接的多孔结构对于营养物质的运输和细胞透至关重要.
研究的目的:
- 开发和描述多孔聚酸/多烯酸 (PLA/PCL) 支架,使用多孔液和冷干燥技术的组合.
- 研究Klucel (一种纤维素衍生物) 度对脚手架孔隙性,吸水和细胞反应的影响.
- 评估这些支架在工程预血管化的软硬组织方面的潜力.
主要方法:
- 使用NaCl和不同度的Klucel (10-100% w/w) 制造PLA/PCL支架.
- 使用SEM,微CT和BET分析对脚手架的多孔性 (宏,微,纳米孔) 和相互连接性进行表征.
- 评估吸水,细胞内生长 (人体脂肪衍生的干细胞) 和血管前结构形成 (与内皮细胞共培养).
主要成果:
- 脚手架展示了三模孔的大小分布 (宏观,微观,纳米孔) 具有~90%的开放孔隙性.
- 结合Klucel增加了巨孔大小和纳米度,增强了水的吸收和细胞透.
- 使用25%Klucel的支架显示出最佳的细胞生长,在动态培养系统中增强了血管化前期.
- 脚手架的机械性能因Klucel含量而异,这表明它适用于软 (10%的Klucel) 和硬 (25-50%的Klucel) 组织.
结论:
- 使用Klucel制造的PLA/PCL支架提供可调节的孔隙性和增强的血管化潜力.
- 这些支架表明,对工程预先血管化的软和硬组织有希望.
- 控制多孔性和生物材料特性的结合促进了细胞透和组织再生.
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