In:
The Journal of Neuroscience, Society for Neuroscience, Vol. 34, No. 19 ( 2014-05-07), p. 6624-6633
Kurzfassung:
Neural stem cells in the adult mammalian hippocampus continuously generate new functional neurons, which modify the hippocampal network and significantly contribute to cognitive processes and mood regulation. Here, we show that the development of new neurons from stem cells in adult mice is paralleled by extensive changes to mitochondrial mass, distribution, and shape. Moreover, exercise—a strong modifier of adult hippocampal neurogenesis—accelerates neuronal maturation and induces a profound increase in mitochondrial content and the presence of mitochondria in dendritic segments. Genetic inhibition of the activity of the mitochondrial fission factor dynamin-related protein 1 (Drp1) inhibits neurogenesis under basal and exercise conditions. Conversely, enhanced Drp1 activity furthers exercise-induced acceleration of neuronal maturation. Collectively, these results indicate that adult hippocampal neurogenesis requires adaptation of the mitochondrial compartment and suggest that mitochondria are targets for enhancing neurogenesis-dependent hippocampal plasticity.
Materialart:
Online-Ressource
ISSN:
0270-6474
,
1529-2401
DOI:
10.1523/JNEUROSCI.4972-13.2014
Sprache:
Englisch
Verlag:
Society for Neuroscience
Publikationsdatum:
2014
ZDB Id:
1475274-8
SSG:
12
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