石墨烯聚合物纳米纤维使得干细胞衍生的电刺激细胞和大脑器官中可产生光学诱导的电反应
Erin LaMontagne1, Alex Savchenko2, Gisselle Gonzalez1
1Shu Chien-Gene Lay Department of Bioengineering, La Jolla, CA, 92093, USA.
Biomaterials
|May 28, 2025
概括
研究人员开发了具有减少氧化石墨烯 (rGO) 的新型纳米纤维,以提高人类多能干细胞 (hPSC) 衍生细胞的电成熟度. 这些rGO纳米纤维的光刺激增强心肌细胞功能和大脑器官活性,为细胞分化提供了一种新方法.
科学领域:
- 生物材料科学 生物材料科学
- 干细胞生物学 干细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 人类多能干细胞 (hPSC) 对于研究发育至关重要,但它们衍生出的电刺激细胞往往在电上保持不成熟.
- 这些细胞缺乏慢性刺激,阻碍了它们的功能发展和应用.
- 现有的电刺激细胞的方法在范围和控制方面是有限的.
研究的目的:
- 开发新的电活性生物材料,用于按需电刺激hPSC衍生细胞.
- 研究光反应性减少氧化石墨烯 (rGO) 纳米纤维对心肌细胞和神经元功能的影响.
- 探索这项技术在增强大脑器官活性和视网膜分化方面的潜力.
主要方法:
- 电聚合物纳米纤维的制造,其中包括光反应性减少石墨烯氧化物 (rGO).
- 通过改变rGO度来调整纤维特性 (大小,刚性,导电性).
- 对hPSC衍生的心肌细胞,神经元和大脑器官进行急性和长期的每日光刺激.
主要成果:
- 纤维特征由rGO度调节,影响细胞反应.
- 对rGO纳米纤维的急性光刺激导致心肌细胞中增加和同步处理.
- 长期的每日光刺激改善了大脑器官的电活动,并激活了光受体通路.
结论:
- 使用rGO纳米纤维和光刺激建立了一个可调节的方法来调节电池功能.
- 重复光刺激为提高hPSC衍生细胞的电成熟度和功能提供了一种新的方法.
- 这项技术对推进视网膜分化和其他基于细胞的治疗策略有前途.
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