White matter structure and myelin-related gene expression alterations with experience in adult rats.
Genome-wide RNA sequencing
MRI
Myelin
Plasticity
White matter
mRNA expression
Journal
Progress in neurobiology
ISSN: 1873-5118
Titre abrégé: Prog Neurobiol
Pays: England
ID NLM: 0370121
Informations de publication
Date de publication:
04 2020
04 2020
Historique:
received:
29
06
2019
revised:
19
12
2019
accepted:
24
01
2020
pubmed:
1
2
2020
medline:
9
2
2021
entrez:
1
2
2020
Statut:
ppublish
Résumé
White matter (WM) plasticity during adulthood is a recently described phenomenon by which experience can shape brain structure. It has been observed in humans using diffusion tensor imaging (DTI) and myelination has been suggested as a possible mechanism. Here, we set out to identify molecular and cellular changes associated with WM plasticity measured by DTI. We combined DTI, immunohistochemistry and mRNA expression analysis and examined the effects of somatosensory experience in adult rats. First, we observed experience-induced DTI differences in WM and in grey matter structure. C-Fos mRNA expression, a marker of cortical activity, in the barrel cortex correlated with the MRI WM metrics, indicating that molecular correlates of cortical activity relate to macroscale measures of WM structure. Analysis of myelin-related genes revealed higher myelin basic protein (MBP) mRNA expression. Higher MBP protein expression was also found via immunohistochemistry in WM. Finally, unbiased RNA sequencing analysis identified 134 differentially expressed genes encoding proteins involved in functions related to cell proliferation and differentiation, regulation of myelination and neuronal activity modulation. In conclusion, macroscale measures of WM plasticity are supported by both molecular and cellular evidence and confirm that myelination is one of the underlying mechanisms.
Identifiants
pubmed: 32001310
pii: S0301-0082(20)30025-3
doi: 10.1016/j.pneurobio.2020.101770
pmc: PMC7086231
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
101770Subventions
Organisme : Wellcome Trust
Pays : United Kingdom
Organisme : Wellcome Trust
ID : WT090955AIA
Pays : United Kingdom
Organisme : Wellcome Trust
ID : WT110027/Z/15/Z
Pays : United Kingdom
Organisme : Wellcome Trust
ID : 203139/Z/16/Z
Pays : United Kingdom
Organisme : Cancer Research UK
ID : C5255/A15935
Pays : United Kingdom
Informations de copyright
Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest We report no conflict of interest.
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