Lateralized Expression of Cortical Perineuronal Nets during Maternal Experience is Dependent on MECP2.
MECP2
Rett syndrome
alloparenting
lateralization
perineuronal nets
somatosensory cortex
Journal
eNeuro
ISSN: 2373-2822
Titre abrégé: eNeuro
Pays: United States
ID NLM: 101647362
Informations de publication
Date de publication:
Historique:
received:
02
12
2019
revised:
10
04
2020
accepted:
14
04
2020
pubmed:
26
4
2020
medline:
22
6
2021
entrez:
26
4
2020
Statut:
epublish
Résumé
Cortical neuronal circuits along the sensorimotor pathways are shaped by experience during critical periods of heightened plasticity in early postnatal development. After closure of critical periods, measured histologically by the formation and maintenance of extracellular matrix structures called perineuronal nets (PNNs), the adult mouse brain exhibits restricted plasticity and maturity. Mature PNNs are typically considered to be stable structures that restrict synaptic plasticity on cortical parvalbumin+ (PV+) GABAergic neurons. Changes in environment (i.e., novel behavioral training) or social contexts (i.e., motherhood) are known to elicit synaptic plasticity in relevant neural circuitry. However, little is known about concomitant changes in the PNNs surrounding the cortical PV+ GABAergic neurons. Here, we show novel changes in PNN density in the primary somatosensory cortex (SS1) of adult female mice after maternal experience [called surrogate (Sur)], using systematic microscopy analysis of a whole brain region. On average, PNNs were increased in the right barrel field and decreased in the left forelimb regions. Individual mice had left hemisphere dominance in PNN density. Using adult female mice deficient in methyl-CpG-binding protein 2 (MECP2), an epigenetic regulator involved in regulating experience-dependent plasticity, we found that MECP2 is critical for this precise and dynamic expression of PNN. Adult naive
Identifiants
pubmed: 32332080
pii: ENEURO.0500-19.2020
doi: 10.1523/ENEURO.0500-19.2020
pmc: PMC7294466
pii:
doi:
Substances chimiques
Mecp2 protein, mouse
0
Methyl-CpG-Binding Protein 2
0
Parvalbumins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : NIGMS NIH HHS
ID : R35 GM133557
Pays : United States
Informations de copyright
Copyright © 2020 Lau et al.
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