聚乙烯胺促进iPSC衍生的运动神经元的生长和电生理学表征
Meimei Yang1,2,3, Daofeng You4, Gang Liu5
1Key Laboratory of Measurement and Evaluation in Exercise Bioinformation of Hebei Province, School of Physical Education, Hebei Normal University, Shijiazhuang, 050024, China. meimeiyang_2024@163.com.
Scientific reports
|October 31, 2024
概括
优化细胞外矩阵涂层,如Poly-L-ornithine/Matrigel (POM) 和Polyethyleneimine (PEI),可以改善诱导的多能干细胞衍生的运动神经元 (iPSC-MN) 粘附和电生理活动,用于疾病建模.
科学领域:
- 干细胞生物学 干细胞生物学
- 神经科学是一个神经科学.
- 生物材料科学 生物材料科学
背景情况:
- 诱导多能干细胞衍生的运动神经元 (iPSC-MNs) 对研究运动神经元疾病 (MND) 有价值.
- 在iPSC-MN坚持和培养异质性方面的挑战影响了模型可复制性.
- 细胞外基质 (ECM) 涂层对于体外 iPSC-MN 的生长,分化和成熟至关重要.
研究的目的:
- 研究不同细胞外基质 (ECM) 涂层对iPSC-MN行为和电生理活动的影响.
- 确定最佳的涂层条件,以进行强大的神经发育和神经退行性疾病的体外建模.
主要方法:
- 在五种不同的ECM涂层条件下培养iPSC-MN.
- 使用多电极阵列 (MEAs) 评估iPSC-MN的附着,成熟和电生理活动.
- 对比Poly-L-ornithine/Matrigel (POM) 和Polyethyleneimine (PEI) 涂料的作用.
主要成果:
- 聚-L-ornithine/Matrigel (POM) 和聚乙烯胺 (PEI) 涂层显著增强了iPSC-MN的附着和成熟.
- 在5周内,POM加速了iPSC-MN的成熟,适合神经发育障碍的建模.
- 在7周的培养中,PEI促进了均的MN分布和降低了信号变异性,使得可以检测出来自患者的iPSC-MNs增强了肌缩侧面硬化症 (ALS) 的兴奋性.
结论:
- 细胞外矩阵 (ECM) 涂层对iPSC-MN的电生理学和模型适用性产生了重大影响.
- POM和PEI是iPSC-MN培养的有效涂层,为模拟不同神经系统疾病提供了明显的优势.
- 优化的ECM涂层提高了iPSC-MN在疾病研究和治疗开发中的可靠性和实用性.
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