Early-life environmental enrichment generates persistent individualized behavior in mice
| Autor: | Gerd Kempermann, Jadna Bogado Lopes, York Winter, Vijay S. Adusumilli, Sara Zocher, Susan Schilling, Sandra Günther, Rupert W. Overall, Anna N. Grzyb |
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| Rok vydání: | 2020 |
| Předmět: |
0303 health sciences
Environmental enrichment Evolutionary Biology Multidisciplinary genetic structures Neurogenesis Hippocampus SciAdv r-articles Biology Hippocampal formation 03 medical and health sciences 0302 clinical medicine DNA methylation Neuroplasticity Epigenetics ddc:500 Gene Neuroscience 030217 neurology & neurosurgery Research Articles 030304 developmental biology Research Article |
| Zdroj: | Science Advances Science advances 6(35), eabb1478-(2020). doi:10.1126/sciadv.abb1478 |
| ISSN: | 2375-2548 |
| Popis: | Experience-induced differences in behavior, brain plasticity, and epigenetics persist even after stimulus withdrawal. Individuals differ in their response to environmental stimuli, but the stability of individualized behaviors and their associated changes in brain plasticity are poorly understood. We developed a novel model of enriched environment to longitudinally monitor 40 inbred mice exploring 35 connected cages over periods of 3 to 6 months. We show that behavioral individuality that emerged during the first 3 months of environmental enrichment persisted when mice were withdrawn from the enriched environment for 3 additional months. Behavioral trajectories were associated with stable interindividual differences in adult hippocampal neurogenesis and persistent epigenetic effects on neuronal plasticity genes in the hippocampus. Using genome-wide DNA methylation sequencing, we show that one-third of the DNA methylation changes were maintained after withdrawal from the enriched environment. Our results suggest that, even under conditions that control genetic background and shared environment, early-life experiences result in lasting individualized changes in behavior, brain plasticity, and epigenetics. |
| Databáze: | OpenAIRE |
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