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Neuron ; 98(3): 530-546.e11, 2018 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-29681534

RESUMO

A vast number of different neuronal activity patterns could each induce a different set of activity-regulated genes. Mapping this coupling between activity pattern and gene induction would allow inference of a neuron's activity-pattern history from its gene expression and improve our understanding of activity-pattern-dependent synaptic plasticity. In genome-scale experiments comparing brief and sustained activity patterns, we reveal that activity-duration history can be inferred from gene expression profiles. Brief activity selectively induces a small subset of the activity-regulated gene program that corresponds to the first of three temporal waves of genes induced by sustained activity. Induction of these first-wave genes is mechanistically distinct from that of the later waves because it requires MAPK/ERK signaling but does not require de novo translation. Thus, the same mechanisms that establish the multi-wave temporal structure of gene induction also enable different gene sets to be induced by different activity durations.


Assuntos
Córtex Cerebral/fisiologia , Regulação da Expressão Gênica/fisiologia , Sistema de Sinalização das MAP Quinases/fisiologia , Neurônios/fisiologia , Animais , Células Cultivadas , Córtex Cerebral/citologia , Feminino , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos ICR , Estimulação Luminosa/métodos , Ratos , Ratos Sprague-Dawley
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