相关实验视频

Updated: Jan 16, 2026

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Published on: March 11, 2020

活动剥夺调节Shank3/Homer1/mGluR5信号通路,使突触升级成为可能

Andrea A Guerrero¹, Gina G Turrigiano²

¹Department of Biology, Brandeis University, Waltham, Massachusetts 02453.

The Journal of neuroscience : the official journal of the Society for Neuroscience

|October 3, 2025

概括

尚克3脱酸化通过促进特定的甲基胺受体信号传递,使突触升级成为可能. 这揭示了突触上下缩放的独特分子机制.

科学领域:

神经科学是一个神经科学.
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

尚克3蛋白对突触缩放至关重要,这是一个恒常性可塑性机制.
在S1586/S1615的活动依赖的Shank3酸化/脱酸化调节了突触升级.
尚克3与荷马1相互作用,该荷马1与甲基酸盐受体 (mGluRs) 相互作用.

研究的目的:

在突触升级中研究Shank3脱化下游的分子机制.
阐明荷马1和mGluR信号在Shank3介导的突触可塑性中的作用.

主要方法:

使用培养的老鼠神经元.
采用相仿 Shank3 突变体来评估结合和相互作用.
使用竞争性和非竞争性抑制剂操纵mGluR1和mGluR5信号.
研究了I组mGluRs下游的信号通路.

主要成果:

相仿 Shank3 显示对长型Homer1.1 的结合减少.
竞争性抑制mGluR信号传递,但不是非竞争性,受损的突触升级.
mGluR5激活在相仿的Shank3突变体中挽救了突触升级.
确定了I组mGluR下游的特定信号通路,这对于升级至关重要.

结论:

活动依赖的Shank3脱化重新配置Shank3/Homer1/mGluR通路,以支持激素依赖的mGluR信号,从而实现突触升级.
突触升级和降级利用相同信号组件的不同功能状态 (Shank3,Homer1,mGluR5).

关键词:

这就是Shank3的意思.恒温的可塑性恒温的可塑性 mGluRR 在线观看突触性可塑性突触性可塑性突触缩放是指突触缩放的缩放.

更多相关视频

A High-content Assay for Monitoring AMPA Receptor Trafficking

A High-content Assay for Monitoring AMPA Receptor Trafficking

Published on: January 28, 2019

Evaluation of Synapse Density in Hippocampal Rodent Brain Slices

Evaluation of Synapse Density in Hippocampal Rodent Brain Slices

Published on: October 6, 2017

相关概念视频

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...