凝MA/PEDOT:PSS复合导电基生成和通过多个信号通路保护耳毛细胞
Fei Tan1,2,3,4, Xuran Li1,2, Xiao Li5
1Department of ORL-HNS, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai 200070, China.
Biomolecules
|January 23, 2024
概括
这项研究引入了用于耳植入物的导电水凝,提供药物来再生听力细胞并防止损伤. 这项创新为双模式听力康复提供了一个有前途的方法.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
背景情况:
- 耳植入物中的双向电声刺激需要协同恢复和保护耳毛细胞.
- 现有的治疗方法在解决毛细胞功能障碍和耳毒性方面面临挑战.
- 对于有效的内耳治疗,需要本地药物输送系统.
研究的目的:
- 开发一个复合的GelMA/PEDOT:PSS导电水凝用于耳植入物电极涂层.
- 评估水凝在局部输送 otoregenerative 和 otoprotective 药物的潜力.
- 评估水凝的材料特性,生物相容性,以及促进毛发细胞再生和保护的治疗疗效.
主要方法:
- 使用H NMR,FT-IR,EIS和SEM进行材料表征.
- 实验模型包括小鼠耳器官和氨基糖化物诱导的毒HEI-OC1细胞模型.
- 通过共聚焦显微镜,qPCR,流细胞计和生物信息测序进行生物分析.
主要成果:
- 开发的水凝表现出有利的机械,电化学,生物相容性和生物安全性.
- 持续释放的药物尾酒 (CDR) 促进了耳干细胞的扩张和转基因分化为毛细胞.
- 基于水凝的药物输送保护了头发细胞免受氧化应激和编程细胞死亡 (亡,铁亡).
结论:
- 成功开发了一种导电性水凝,能够局部,持续地提供双功能药物尾酒.
- 该系统显示了促进毛细胞再生和提供自身保护的巨大潜力.
- 这些发现表明,在双模耳性听力康复和相关疾病中,耳内耳内治疗是一个有希望的解决方案.
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