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相关概念视频

EPS and iPS Cells in Disease Research01:21

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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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相关实验视频

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Rapid Neuronal Differentiation of Induced Pluripotent Stem Cells for Measuring Network Activity on Micro-electrode Arrays
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人类iPSC衍生的神经元具有可靠的突触和大量的前突触动作潜力.

Torsten Bullmann1, Thomas Kaas1, Andreas Ritzau-Jost1

  • 1Carl-Ludwig-Institute of Physiology, Faculty of Medicine, Leipzig University, Leipzig 04103, Germany.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|May 9, 2024
PubMed
概括

研究人员生成了人类神经元来研究突触传输. 他们发现,人类的前联想作用潜力是快速和大的,影响大脑中的谷氨酸释放.

关键词:
行动潜力 行动潜力 行动潜力人类 人类 人类 人类 人类 人类 人类这就是 iPSC 的意义.在突触前的突触前.

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Synaptic Microcircuit Modeling with 3D Cocultures of Astrocytes and Neurons from Human Pluripotent Stem Cells
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相关实验视频

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科学领域:

  • 神经科学是一个神经科学.
  • 细胞生物学 细胞生物学
  • 分子生物学分子生物学

背景情况:

  • 了解人类大脑功能需要对人类神经元中的突触传输进行表征.
  • 对于神经递质释放至关重要的神经突触前作用潜在的特性,在人类神经元中仍然存在争议.
  • 以前的测量缺乏人类神经元的高时间分辨率.

研究的目的:

  • 为了确定人类神经元中预突触作用电位的特性.
  • 建立一个模型系统来研究人类的Glutamatergic突触传输.
  • 研究同步高频谷氨酸释放的机制.

主要方法:

  • 从多能干细胞通过神经新生素2 (Ngn2) 表达生成的人类谷氨酸性神经元.
  • 使用超分辨率显微镜可视化前和后突触蛋白质对齐.
  • 从成熟的人类神经元进行了直接的突触前补丁录音.

主要成果:

  • Ngn2诱导的人类神经元显示,多个轴突的初始段数减少,轴突的和刺激性随着成熟而增加.
  • 在高频率 (20-100赫兹) 中,突触传输可靠,在9周内同步性增加.
  • 直接记录显示了人类的前突触作用潜力,具有很大的超射 (~25 mV) 和短持续时间 (~0.5 ms).

结论:

  • Ngn2诱导的神经元提供了一个有效的模型,用于高时空分辨率分析人类的谷氨基质突触传输.
  • 这些研究结果预测,人类大脑的谷氨基胺转移涉及大,快速的前突触作用潜力.
  • 这项研究提供了对人类大脑神经传递的基本机制的关键见解.