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Updated: May 21, 2026

High Resolution Quantitative Synaptic Proteome Profiling of Mouse Brain Regions After Auditory Discrimination Learning

High Resolution Quantitative Synaptic Proteome Profiling of Mouse Brain Regions After Auditory Discrimination Learning

Published on: December 15, 2016

Synaptic proteome changes in mouse brain regions upon auditory discrimination learning.

Thilo Kähne¹, Angela Kolodziej, Karl-Heinz Smalla

¹Institute of Experimental Internal Medicine, Medical School, Otto von Guericke University, Magdeburg, Germany.

|June 15, 2012

Summary

This summary is machine-generated.

Auditory learning in mice causes significant protein downregulation in synapses, suggesting initial protein removal before reorganization. This synaptic proteome shift is learning-specific, unlike control groups.

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Last Updated: May 21, 2026

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Area of Science:

Neuroscience
Molecular Biology
Proteomics

Background:

Synaptic plasticity is crucial for learning and memory.
Changes in synaptic protein composition are hypothesized to underlie these processes.

Purpose of the Study:

To quantitatively analyze changes in the synaptic proteome during auditory learning.
To investigate the role of protein dynamics in synaptic reorganization post-learning.

Main Methods:

Quantitative proteomic screening using mass spectrometry.
Analysis of synaptic cytomatrix-associated proteins in four mouse brain regions.
Auditory learning task (shuttle box GO/NO-GO) with control groups.

Main Results:

Trained mice showed significantly more downregulated (59.9%) than upregulated (23.5%) synaptic proteins.
Control groups (foot shock or tone only) exhibited a more balanced up/downregulation of proteins.
Learning-induced protein changes were distinct from control responses.

Conclusions:

Auditory learning initially involves the removal/degradation of synaptic proteins.
This precedes the reorganization of presynaptic and postsynaptic cytoskeletal matrices.
Insulin-like signaling may play a role in learning-associated synaptic protein regulation.