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High Resolution Quantitative Synaptic Proteome Profiling of Mouse Brain Regions After Auditory Discrimination Learning
Published on: December 15, 2016
Quantitative proteomics of auditory fear conditioning.
Ingie Hong1, Taewook Kang, Ki Na Yun
1School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-742, South Korea.
Biochemical and Biophysical Research Communications
|April 2, 2013
Summary
This study used quantitative proteomics to identify proteins in the lateral amygdala regulated by auditory fear conditioning. Many identified proteins are involved in synaptic plasticity and learning, with some being newly discovered in this context.
Area of Science:
- Neuroscience
- Molecular Biology
- Behavioral Science
Background:
- Auditory fear conditioning in rodents is a model for associative fear memory.
- Long-term memory storage involves lateral amygdala long-term potentiation (LTP) and protein synthesis.
- Previous studies focused on individual proteins; genome-wide protein-level analysis was lacking.
Purpose of the Study:
- To investigate protein expression changes in the lateral amygdala following auditory fear conditioning using quantitative proteomics.
- To identify novel proteins involved in fear memory formation and synaptic plasticity.
Main Methods:
- Quantitative proteomics was employed to analyze protein expression in the lateral amygdala.
- Auditory fear conditioning was used as the experimental paradigm in rodents.
Main Results:
- Hundreds of proteins in the lateral amygdala showed altered expression after fear conditioning.
- Regulated proteins included those previously linked to LTP, learning, and neuronal growth.
- A significant number of regulated proteins have not been previously studied in the context of learning or synaptic plasticity.
Conclusions:
- Quantitative proteomics reveals a broad range of protein regulations in the lateral amygdala during auditory fear conditioning.
- These findings highlight novel molecular targets for understanding fear memory and synaptic plasticity.
- The study expands the known molecular mechanisms underlying associative learning and memory consolidation.
