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纳米工程挤出对齐管道生物打印使脊髓损伤的功能性修复成为可能

Wenhui Huang¹, Shuxian Chen¹, Kai Li¹

¹Human Organ Physiopathology Emulation System, State Key Laboratory of Organ Regeneration and Reconstruction, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 101408, China.

|January 14, 2026

概括

这项研究介绍了NEAT,这是用于脊髓修复的3D生物打印方法. NEAT水凝促进人类神经干细胞 (hNSC) 的分化,并增强脊髓损伤后的运动运动恢复.

科学领域:

生物材料科学生物材料科学
神经科学是一个神经科学.
组织工程是组织工程.

背景情况:

脊髓修复需要模仿本地组织对齐结构和柔软性的生物材料.
目前的支架往往无法支持在柔软,水合条件下对人类神经干细胞 (hNSCs) 的3D对齐和神经分化.

研究的目的:

开发一种用于脊髓再生的新型生物材料支架.
研究纳米工程挤出对齐通道 (NEAT) 系统对hNSC行为和脊髓损伤后功能恢复的影响.

主要方法:

采用了基于剪压的3D生物打印策略,使用norbornene功能化原蛋白 (NorCol) 来创建NEAT水凝.
在NEAT内封装的hNSC构建并评估细胞对齐,分化和长期培养稳定性.
在完整脊髓切割的老鼠模型中评估了NEAT植入物的疗效,评估了轴突重新连接,突触形成和运动恢复.

主要成果:

NEAT水凝表现出高对齐度,机械稳定性,并且在没有后处理的情况下保存了原结构.
封装的hNSCs显示了增强的对齐和加速的神经元分化.
在老鼠中,NEAT植入物促进了显著的轴突重新连接,突触形成和功能运动恢复.

结论:

NEAT是一种强大的3D生物打印策略,用于神经组织工程和脊髓再生.
这种方法有效地整合了地形线索,细胞编程和用于脊髓修复的功能恢复.

关键词:

在3D生物打印中使用3D生物打印细胞对齐细胞对齐人类神经干细胞的神经干细胞脊髓损伤导致的脊髓损伤

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