生物功能化的凝水凝支持iPSC衍生的皮质器官的发育和成熟
Andrew Kjar1, Mia R Haschert2, José C Zepeda3
1Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA.
Cell reports
|October 18, 2024
概括
研究人员开发了一种用于人类神经器官的新型水凝 (GelMA-Cad). 与标准Matrigel相比,这种药物改善了细胞多样性和神经元功能,可以更好地控制干细胞分化.
科学领域:
- 神经生物学 神经生物学 神经生物学
- 生物材料科学 生物材料科学
- 干细胞生物学 干细胞生物学
背景情况:
- 人类神经器官对神经生物学研究至关重要.
- 提高神经细胞在有机体中的代表性是一个关键的挑战.
- 目前的有机体培养方法通常依赖于未定义的矩阵,如Matrigel.
研究的目的:
- 为了比较Matrigel与一种新型N-cadherin功能化的凝甲基化水凝 (GelMA-Cad) 用于皮质神经器官培养.
- 研究体呈现在水凝中对神经细胞命运和多样性的影响.
- 为了评估来自不同基质培养的有机体衍生的神经元的功能成熟.
主要方法:
- 使用商用Matrigel或GelMA-Cad水凝进行皮质神经器官培养.
- 在基于凝的矩阵中,的呈现有系统地变化.
- 对神经细胞群体的多样性和分化状态进行了分析.
- 在培养的神经元上进行了电生理学记录 (自发刺激后突触电流).
主要成果:
- 与N-cadherin质功能化的GelMA-Cad水凝支持皮质神经器官的发展.
- 在凝基质中的呈现显著调整了分化过程中的细胞命运和多样性.
- 在GelMA-Cad中培养的器官体表现出神经细胞种群,更代表人类胎儿发育.
- 与Matrigel相比,GelMA-Cad产生的神经元显示自发刺激后突触电流增加.
结论:
- 与矩阵连接的信号可以有效地影响神经器官分化和干细胞命运.
- 在神经器官培养中,GelMA-Cad作为Matrigel的定义和技术优势替代品.
- 这项工作为设计更具代表性和功能性的人类神经器官模型提供了途径.
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