结合原始凝作为一种策略,以增强基于聚乙烯醇的水凝的生物功能,用于组织工程应用
Alessia Longoni1, Gretel S Major1, Shaoyuan Jiang2
1Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, New Zealand. ALongonialessia.longoni@otago.ac.nz.
Biomaterials science
|November 7, 2023
概括
凝通过促进细胞透和血管生长来增强用于组织工程的合成聚乙烯醇 (PVA) 水凝. 这项研究表明,凝是血管内皮生长因子 (VEGF) 的可行的替代品,可以改善生物材料的生物活性.
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:
- 合成聚合物如聚乙烯醇 (PVA) 由于其可调性特性,在组织工程和再生医学 (TERM) 中使用.
- 然而,它们的生物惰性性质限制了细胞透和血管化,阻碍了与宿主组织的融合.
- 增强合成水凝生物活性对于改善细胞物质相互作用和治疗结果至关重要.
研究的目的:
- 评估原始凝作为胺PVA (PVA-Tyr) 水凝的生物活性成分.
- 为TERM应用研究凝促进细胞透和宿主血管招募的能力.
- 为了比较凝的疗效与PVA-Tyr水凝中的血管内皮生长因子 (VEGF).
主要方法:
- 制造PVA-Tyr水凝,含有不同度的内置凝或VEGF.
- 在加入生物活性分子后评估水凝的物理性质.
- 在体外评估内皮细胞与改性水凝的相互作用.
- 在体内评估血管新生,使用小胆膜 (CAM) 试验.
- 在小鼠体内皮下植入水凝以评估1周和3周的细胞透和血管化.
主要成果:
- 加入凝或VEGF并没有改变PVA-Tyr水凝的物理特性.
- 凝 (>0.1 wt%) 和VEGF (>0.1 μg mL−1) 在体外显著促进了内皮细胞与水凝的相互作用.
- 在CAM测定中,共价结合的等和VEGF显示出相似的益血管性活性.
- 在体内,虽然有些细胞透在没有添加剂的情况下发生,但需要凝和VEGF来增强血管招募和透.
- 在体内,凝和VEGF之间没有观察到增强血管化的显著差异.
结论:
- 清洁凝可以有效地纳入PVA-Tyr水凝,以增强其生物活性.
- 凝作为一种强大的亲血管性暗示剂,与VEGF相似,用于改善细胞透和血管化.
- 作为一个独立的组件,凝具有显著的前景,用于开发各种TERM应用的先进生物材料.
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