Early determination and long-term persistence of adult-generated new neurons in the hippocampus of mice

Item Type:	Article
Title:	Early determination and long-term persistence of adult-generated new neurons in the hippocampus of mice
Creators Name:	Kempermann, G. and Gast, D. and Kronenberg, G. and Yamaguchi, M. and Gage, F.H.
Abstract:	New neurons are continually generated in the adult hippocampus, but the important question, whether adult neurogenesis is transient or leads to the lasting presence of new neurons, has not yet been answered. Dividing cells were labeled with bromodeoxyuridine (BrdU) and were investigated by means of immunofluorescence and confocal microscopy at several time-points 1 day to 11 months thereafter. BrdU-labeled neurons remained stable in number and in their relative position in the granule cell layer over at least 11 months. This finding implies that the addition of new neurons is not transient and that their final number and localization are determined early. By contrast, expression of immature markers {beta}-III-tubulin and doublecortin in BrdU-labeled cells, peaked early after division and was not detectable after 4 weeks. In transgenic mice expressing enhanced green fluorescent protein under the nestin promoter none of the BrdU/nestin-positive cells early after division expressed the mature marker NeuN, confirming that no dividing neurons were detected. These new data suggest that new neurons are recruited early from the pool of proliferating progenitor cells and lead to a lasting effect of adult neurogenesis.
Keywords:	Stem Cell, Progenitor Cell, Adult Neurogenesis, Mouse, Animals, Mice
Source:	Development
ISSN:	0950-1991
Publisher:	Company of Biologists
Volume:	130
Number:	2
Page Range:	391-399
Date:	January 2003
Official Publication:	https://doi.org/10.1242/dev.00203
PubMed:	View item in PubMed

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