像神经组织,而不是超生理,电导性通过信号和表观遗传修饰刺激神经系特征通过信号和表观遗传修饰
Yu-Meng Li1,2, Yunseong Ji1,3, Yu-Xuan Meng1,2
1Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Chungcheongnam-do, 31116, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|July 10, 2024
概括
低电导率 (0.02-0.1 S m-1) 促进神经干细胞分化成神经元和寡干细胞. 高导电性触发细胞死亡,而生理导电性诱导神经元特异性的表观遗传变化.
科学领域:
- 生物物理学的生物物理.
- 神经科学是一个神经科学.
- 材料科学 材料科学 材料科学
背景情况:
- 导电性对于神经接口至关重要,但最佳水平仍在争论中.
- 孤立导电性作为影响神经细胞的因素存在挑战.
研究的目的:
- 研究不同电导率对神经干细胞/祖细胞谱系特征的孤立影响.
- 确定生理与超生理导电性对神经分化的影响.
主要方法:
- 导电基质 (碳纳米管,氧化石墨烯纳米带) 的制造,可调节导电率为 (0.023.2 S m-1).
- 在这些基质上培养神经干细胞/祖细胞,以评估谱系特异性.
- 细胞反应的分析,包括细胞亡,形态,细胞内水平和表观遗传修饰 (H3乙化).
主要成果:
- 神经组织类导电性 (0.020.1 S m-1) 增强了神经元和寡细胞的分化,抑制了星球细胞的形成.
- 超生理导电性 (3.2 S m-1) 诱导了亡和减少神经性特征,与过载有关.
- 生理导电性促进了表观遗传变化 (增加H3乙化) 和神经转录因子激活,与平衡的反应.
结论:
- 最佳的导电性对于设计有效的神经接口和支架至关重要.
- 通过表观遗传调制,生理导电性支持神经元分化和修复过程.
- 了解导电性的作用对于推进神经组织工程和再生医学至关重要.
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