相关实验视频

Updated: Jan 7, 2026

An Approach to Enhance Alignment and Myelination of Dorsal Root Ganglion Neurons

An Approach to Enhance Alignment and Myelination of Dorsal Root Ganglion Neurons

Published on: August 24, 2016

在微型表面上的神经组织模型:轴突引导和神经再生

Damla Arslantunali-Sahin¹, Dilara Goksu Tamay^1,2, Seyma Isik^3,4

¹BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Türkiye.

Journal of materials science. Materials in medicine

|December 24, 2025

概括

这项研究开发了一种新的微型图案表面,以观察神经细胞轴突在受伤后的再生. 结合施万细胞和Netrin-1显著增强了轴突的再生,为神经修复研究提供了一个新的工具.

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:

神经损伤和再生是复杂的过程,需要先进的体外模型.
当前的模型往往缺乏研究个体轴突行为和再生的精度.
开发复杂的平台对于理解神经修复机制至关重要.

研究的目的:

设计和测试微模式聚甲基 (PDMS) 表面,用于研究单个轴突再生.
研究施万细胞 (SC) 和Netrin-1对轴突延长和修复的协同作用.
建立一个体外模型来评估神经损伤和评估潜在的治疗策略.

主要方法:

用微支柱和微通道制造PDMS表面,以引导PC12细胞轴突.
用聚烯 (L-lysine) 涂覆表面,以增强细胞粘附性和培养PC12细胞和SCs.
在GelMA水凝中加入Netrin-1以促进轴突生长.
通过共聚焦显微镜诱导轴突损伤并使用损伤标志物 (ATF3,GFAP,S100β) 监测再生.

主要成果:

工程表面成功地限制了PC12细胞体,同时引导轴突进入微通道.
与SCs共同培养并结合Netrin-1显著增加了PC12轴突长度 (高达177 ± 31μm).
损伤后损伤标志物的表达增加,随后的减少表明轴突在14-21天内成功再生.

结论:

开发的PDMS平台为观察个体轴突再生提供了一个强大的系统.
施万细胞和Netrin-1表现出协同作用,显著促进轴突延长和修复.
这个平台是神经损伤研究和神经组织工程策略体外查的宝贵工具.

更多相关视频

Anatomically Inspired Three-dimensional Micro-tissue Engineered Neural Networks for Nervous System Reconstruction, Modulation, and Modeling

Anatomically Inspired Three-dimensional Micro-tissue Engineered Neural Networks for Nervous System Reconstruction, Modulation, and Modeling

Published on: May 31, 2017

Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration

Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration

Published on: January 10, 2018

相关概念视频

Neurogenesis and Regeneration of Nervous Tissue

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...