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Profiling of experience-regulated proteins in the songbird auditory forebrain using quantitative proteomics.

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Date
2008-03
Authors
Pinaud, Raphael
Osorio, Cristina
Alzate, Oscar
Jarvis, Erich D
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Abstract
Auditory and perceptual processing of songs are required for a number of behaviors in songbirds such as vocal learning, territorial defense, mate selection and individual recognition. These neural processes are accompanied by increased expression of a few transcription factors, particularly in the caudomedial nidopallium (NCM), an auditory forebrain area believed to play a key role in auditory learning and song discrimination. However, these molecular changes are presumably part of a larger, yet uncharacterized, protein regulatory network. In order to gain further insight into this network, we performed two-dimensional differential in-gel expression (2D-DIGE) experiments, extensive protein quantification analyses, and tandem mass spectrometry in the NCM of adult songbirds hearing novel songs. A subset of proteins was selected for immunocytochemistry in NCM sections to confirm the 2D-DIGE findings and to provide additional quantitative and anatomical information. Using these methodologies, we found that stimulation of freely behaving birds with conspecific songs did not significantly impact the NCM proteome 5 min after stimulus onset. However, following 1 and 3 h of stimulation, a significant number of proteins were consistently regulated in NCM. These proteins spanned a range of functional categories that included metabolic enzymes, cytoskeletal molecules, and proteins involved in neurotransmitter secretion and calcium binding. Our findings suggest that auditory processing of vocal communication signals in freely behaving songbirds triggers a cascade of protein regulatory events that are dynamically regulated through activity-dependent changes in calcium levels.
Type
Journal article
Subject
Acoustic Stimulation
Animals
Auditory Pathways
Female
Finches
Gene Expression Profiling
Learning
Nerve Tissue Proteins
Prosencephalon
Proteomics
Songbirds
Vocalization, Animal
Permalink
https://hdl.handle.net/10161/11262
Published Version (Please cite this version)
10.1111/j.1460-9568.2008.06102.x
Publication Info
Pinaud, Raphael; Osorio, Cristina; Alzate, Oscar; & Jarvis, Erich D (2008). Profiling of experience-regulated proteins in the songbird auditory forebrain using quantitative proteomics. Eur J Neurosci, 27(6). pp. 1409-1422. 10.1111/j.1460-9568.2008.06102.x. Retrieved from https://hdl.handle.net/10161/11262.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Scholars@Duke

Jarvis

Erich David Jarvis

Adjunct Professor in the Dept. of Neurobiology
Dr. Jarvis' laboratory studies the neurobiology of vocal communication. Emphasis is placed on the molecular pathways involved in the perception and production of learned vocalizations. They use an integrative approach that combines behavioral, anatomical, electrophysiological and molecular biological techniques. The main animal model used is songbirds, one of the few vertebrate groups that evolved the ability to learn vocalizations. The generality of the discoveries is tested in other vocal
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