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Maturation of Human Stem Cell-derived Cardiomyocytes in Biowires Using Electrical Stimulation
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导电电聚合物改善干细胞衍生的心肌细胞功能和成熟.

Gisselle Gonzalez1, Aileena C Nelson1, Alyssa R Holman2

  • 1Shu Chien-Gene Lay Department of Bioengineering, La Jolla, CA, 92093, USA.

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概括

导电聚合物支架改善了人类多能干细胞衍生心肌细胞 (hPSC-CMs) 的成熟和电通信. 这些稳定的支架增强了心脏基因表达和功能,有助于心脏病建模和治疗开发.

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科学领域:

  • 生物医学工程 生物医学工程
  • 干细胞生物学 干细胞生物学
  • 心血管研究研究心血管研究

背景情况:

  • 人类多能干细胞衍生心肌细胞 (hPSC-CMs) 通常表现为不成熟和电气合不良.
  • 开发功能性的hPSC-CM对于疾病建模和再生医学至关重要.

研究的目的:

  • 研究使用导电聚合物纤维网格来增强hPSC-CMs的电通信和成熟.
  • 评估用于心脏细胞培养的导电支架的稳定性和生物相容性.

主要方法:

  • 导电聚合物的电,以创建纤维网架.
  • 在导电和非导电支架上播种hPSC-CM.
  • 脚手架特性 (稳定性,刚性,导电性) 的表征.
  • 评估细胞活力,粘附性,基因表达,结构性蛋白质组织和处理.

主要成果:

  • 导电支架是稳定的,在体内与心脏硬度相匹配,并表现出可调节的电导率.
  • hPSC-CMs 仍然是可行的,并且至少在 5 天内坚持支架.
  • 导电基质上调心脏/肌肉基因,改善结构性蛋白质组织,增强处理,并促进膜脱极化与非导电对照相比,即使在亚流动密度.

结论:

  • 混合导电支架是稳定的,并支持hPSC-CMs中的电合.
  • 这些支架促进hPSC-CM成熟,改善电特性和心脏基因表达.
  • 导电支架为推进心脏病建模和使用hPSC-CMs的治疗开发提供了一个有希望的策略.