一步生物打印内皮质化,自我支持的动脉和静脉网络
Betty Cai1, David Kilian1, Sadegh Ghorbani1,2
1Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States of America.
Biofabrication
|January 17, 2025
概括
这项研究引入了一种新的3D生物打印方法,用于创建可 perfusable 血管网络. 该技术确保了均的内皮细胞化,并允许在工程血管系统中设计多种细胞类型的模式.
科学领域:
- 生物技术是生物技术.
- 组织工程是组织工程.
- 再生医学是一种再生医学.
背景情况:
- 生物制造的进步允许创建模仿血管系统的可 perfusable 网络.
- 复杂的血管网络的有效内皮化仍然是一个挑战,影响细胞均性,播种效率和多种类型的细胞模式.
研究的目的:
- 开发一个集成的制造和内皮细胞化策略,直接生成分支,内皮细胞覆盖网络.
- 为了克服在工程血管网络中统一的细胞,播种效率和多类型细胞模式的局限性.
主要方法:
- 使用基于扩散的嵌入式3D生物打印工艺,使用凝微粒牺牲油墨.
- 墨水将细胞和交叉连接器输送到支浴中,通过扩散诱导的交叉连接形成一个自我支的结构.
- 祭品墨水在制造后被化,以释放细胞粘附,创造一个统一的光线层.
主要成果:
- 在复杂的,分支的血管网络中实现了均的内皮细胞层,超越了传统的输液方法.
- 证明了高细胞活力 (>90%) 和形成一个与血管模拟屏障功能和剪切应激反应的汇合性内皮层.
- 首次在一个单一的工程网络中成功模拟了多种内皮细胞类型 (动脉和静脉).
结论:
- 开发的策略使得多细胞工程血管系统的制造具有增强的几何复杂性.
- 这种方法克服了内皮细胞化中的关键挑战,为更复杂的血管组织工程铺平了道路.
- 该方法支持工程血管网络中的表型异质性,推进生物仿真.
相关概念视频
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01:15Veins of Lower Limbs
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01:07Development of Blood Vessels
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Arteries
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Arteries
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