生物启发的3D骨模型:模仿皮质-海绵状骨架构和生物学,以增强骨生理表现
Ana R Bastos1,2, Lucília P da Silva1,2, Rui L Reis1,2
13B's Research Group, I3Bs─Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, University of Minho, Zona Industrial da Gandra, Barco, Guimarães 4805-017, Portugal.
ACS biomaterials science & engineering
|July 9, 2025
概括
研究人员使用水凝创建了一个3D骨模型,以模仿皮质和海绵状骨. 这种先进的生物材料平台支持骨细胞生长和血管形成,以加强骨研究.
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:
- 3D骨模型对于理解骨生理学和开发新疗法至关重要.
- 当前的模型往往缺乏本地骨的复杂等级结构.
- 需要先进的模型来减少骨研究中的动物试验.
研究的目的:
- 开发一个3D血管化骨模型,复制皮质和海绵骨的等级结构.
- 评估开发的3D骨模型的骨质和血管生成潜力.
- 为骨 (病理) 生理学研究和治疗开发提供一个新的平台.
主要方法:
- 格兰-氧酸水凝被塑造成皮层 (外环) 和海绵状 (内盘) 骨结构.
- 人类骨髓介质干细胞 (HBM-MSCs) 和人体皮肤微血管内皮细胞 (HDMECs) 被纳入模型.
- 分析了骨质生成基因表达,血管生成因子释放和血管结构形成.
- 组合构造被培养以评估集成的功能.
主要成果:
- 3D水凝模型成功模仿了皮层和海绵状骨微架构,具有稳定的生物材料特性.
- 在皮层状部分的HBM-MSCs表现出骨质性基因表达和释放的血管性因子.
- 在海绵状部分的HDMEC形成了管状结构,并表达了内皮细胞标记物.
- 组合结构显示增强了血管新生因子释放,血管迁移和骨质新生活性.
结论:
- 开发的3D血管化皮质海绵状模型准确地代表了骨的等级结构.
- 这种模型是研究骨生理学和测试治疗干预措施的宝贵平台.
- 该模型显示了推进骨组织工程和减少对动物模型的依赖的潜力.
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