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The AMPA Receptor Code of Synaptic Plasticity

机译:突触可塑性的AMPA受体代码

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摘要

Changes in the properties and postsynaptic abundance of AMPA-type glutamate receptors (AMPARs) are major mechanisms underlying various forms of synaptic plasticity, including long-term potentiation (LTP), long-term depression (LTD), and homeostatic scaling. The function and the trafficking of AMPARs to and from synapses is modulated by specific AMPAR GluA1-GluA4 subunits, subunit-specific protein interactors, auxiliary subunits, and posttranslational modifications. Layers of regulation are added to AMPAR tetramers through these different interactions and modifications, increasing the computational power of synapses. Here we review the reliance of synaptic plasticity on AMPAR variants and propose "the AMPAR code'' as a conceptual framework. The AMPAR code suggests that AMPAR variants will be predictive of the types and extent of synaptic plasticity that can occur and that a hierarchy exists such that certain AMPARs will be disproportionally recruited to synapses during LTP/homeostatic scaling up, or removed during LTD/homeostatic scaling down.
机译:AMPA型谷氨酸受体(AMPARS)的性质和后突触性丰度的变化是各种形式的突触塑性的主要机制,包括长期增强(LTP),长期抑郁(LTD)和稳重缩放。通过特异性AMPAR glua1-glua4亚基,亚单位特异性蛋白互动剂,辅助亚基和后期改性来调节突触和从突触的功能和贩运。通过这些不同的相互作用和修改将调节层添加到AMPAR四聚体中,增加了突触的计算能力。在这里,我们审查突触可塑性对AMPAR变量的依赖,并提出“AMPAR代码”作为一个概念框架。AMPAR代码表明AMPAR变体将预测可以发生的突触可塑性的类型和程度,并且存在层次结构这样的某些AMPars将在LTP /稳态缩放期间不成比例地招募到突触,或者在有限公司/稳态缩放期间移除。

著录项

  • 来源
    《Neuron》 |2018年第2期|共16页
  • 作者单位

    Univ N Carolina Dept Cell Biol &

    Physiol Chapel Hill NC 27514 USA;

    Johns Hopkins Univ Sch Med Solomon H Snyder Dept Neurosci Baltimore MD 21205 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 神经病学;
  • 关键词

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