AMPA 受体:记忆检索谜题中的关键一环。

AMPA Receptors: A Key Piece in the Puzzle of Memory Retrieval.

作者信息

Pereyra Magdalena, Medina Jorge H

机构信息

Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.

Instituto de Biología Celular y Neurociencia "Dr. Eduardo De Robertis" (IBCN), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina.

出版信息

Front Hum Neurosci. 2021 Sep 21;15:729051. doi: 10.3389/fnhum.2021.729051. eCollection 2021.

Abstract

Retrieval constitutes a highly regulated and dynamic phase in memory processing. Its rapid temporal scales require a coordinated molecular chain of events at the synaptic level that support transient memory trace reactivation. AMPA receptors (AMPAR) drive the majority of excitatory transmission in the brain and its dynamic features match the singular fast timescales of memory retrieval. Here we provide a review on AMPAR contribution to memory retrieval regarding its dynamic movements along the synaptic compartments, its changes in receptor number and subunit composition that take place in activity dependent processes associated with retrieval. We highlight on the differential regulations exerted by AMPAR subunits in plasticity processes and its impact on memory recall.

摘要

在记忆处理过程中,检索是一个受到高度调控且动态变化的阶段。其快速的时间尺度要求在突触水平上有一系列协调的分子事件,以支持瞬态记忆痕迹的重新激活。α-氨基-3-羟基-5-甲基-4-异恶唑丙酸受体(AMPAR)驱动着大脑中大部分的兴奋性传递,其动态特性与记忆检索独特的快速时间尺度相匹配。在这里,我们就AMPAR沿着突触区室的动态移动、其在与检索相关的活动依赖性过程中发生的受体数量和亚基组成的变化,对记忆检索的贡献进行综述。我们着重介绍了AMPAR亚基在可塑性过程中施加的差异调节及其对记忆回忆的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8c5/8490764/4002184e7a15/fnhum-15-729051-g001.jpg

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