高导电性,粘合性和生物相容性凝用于神经再生中的闭环神经调节
Tianfei Chu1,2, Yuanjie Xiao3, Huiting Lai1,2
1State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
ACS nano
|May 8, 2025
概括
研究人员开发了一种新的导电水凝,用于生物电子. 这种材料具有出色的导电性,伸展性和组织粘附性,使先进的神经接口和神经修复应用成为可能.
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.
- 生物电子学 生物电子学
背景情况:
- 导电性水凝对于生物电子应用,如神经接口和神经调节至关重要.
- 现有的水凝在平衡导电性,机械性质和生物相容性方面面临挑战,通常需要高度的填充剂.
研究的目的:
- 开发一种具有优越伸展性,生物粘合性和导电性的多功能导电水凝 (PAACP).
- 解决传统导电水凝在实现最佳性能特性的局限性.
主要方法:
- 设计了一种聚烯胺-聚烯酸 (PAM-PAA) 基质水凝.
- 纳入聚多巴胺修饰碳纳米管 (CNT-PDA) 在低度 (0.33 wt %).
- 利用了甲基醇和NHS功能组,以增强组织粘附.
主要成果:
- 实现高导电性 (9.52 S/m) 与最小的 CNT-PDA 含量.
- 证明了出色的机械性能:低拉伸模量 (~100 kPa),高伸展性 (~1000%),以及高性 (7.33 kJ m-2).
- 呈现出强大的组织粘合强度 (107.14 kPa).
- 成功地作为无线袖子电极用于坐骨神经接口,并在闭环系统中用于神经修复,增强功能恢复.
结论:
- PAACP水凝为先进的生物电子设备和神经修复提供了一个有前途的平台.
- 这种材料克服了导电性水凝发展的关键局限性,使无植入和有效的神经调节成为可能.
- 该研究提出了个性化,实时反驱动的神经再生和功能恢复的战略.
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