人类多能干细胞衍生的天体细胞功能与初级大鼠天体细胞相比较有利
Bas Lendemeijer1,2,3, Maurits Unkel1, Hilde Smeenk1
1Department of Psychiatry, Erasmus University Medical Center, Rotterdam 3015 AA, The Netherlands.
eNeuro
|September 3, 2024
概括
人类多能干细胞衍生天体细胞支持神经网络活动,与动物天体细胞相当. 这为研究神经学研究中天体细胞功能和神经元-质相互作用提供了一个完全的人类模型.
科学领域:
- 神经科学是一个神经科学.
- 干细胞生物学 干细胞生物学
- 天星细胞生物学 天星细胞生物学
背景情况:
- 天体细胞对于神经网络的形成和维护至关重要.
- 获得功能性人类星体细胞用于研究一直是一个重大挑战.
- 初级动物星体细胞目前是与人类神经元共同培养模型的黄金标准.
研究的目的:
- 开发一种方法,从人类多能干细胞 (hPSCs) 产生纯粹的,功能性的人类星体细胞.
- 为了比较hPSC衍生的星体细胞在支持人类神经网络活动和成熟的能力与初级大鼠星体细胞.
- 建立一个完全的人体体外试验模型,用于研究天体细胞功能和神经元-质相互作用.
主要方法:
- 通过使用白血病抑制因子 (LIF) 和骨形态遗传蛋白-4 (BMP4) 将hPSC衍生的神经前体细胞定向分化为星细胞.
- 单细胞RNA测序以确认星体的身份并评估转录适应性.
- 与人类神经元共同培养hPSC衍生的星体细胞.
- 多电极阵列 (MEA) 记录以测量网络活动.
- 全细胞补丁记录以分析突触电流.
- 突触密度的量化.
主要成果:
- 在28天内,LIF和BMP4的组合有效地从hPSCs中产生了高度纯净的星细胞群.
- 从hPSC衍生的星体细胞支持强大的人类神经网络活动,在网络频率方面与大鼠星体细胞相美.
- 与hPSC衍生的星体细胞共同培养显著增加了人类神经元峰值频率,后突触电流和突触密度,而与大鼠星体细胞相比.
- 转录分析揭示了hPSC衍生的星细胞和神经元在共同培养中的成熟.
结论:
- 由hPSC衍生的星体细胞是对初级动物星体细胞的可行和有效替代品,用于支持人类神经网络活动和成熟.
- 这项研究提供了一个可扩展的,全人类的体外平台,用于研究星球细胞生物学及其在神经疾病中的作用.
- 这些发现为更准确地建模人类神经元-质相互作用以及开发新治疗策略铺平了道路.
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