Transient calretinin expression defines early postmitotic step of neuronal differentiation in adult hippocampal neurogenesis of mice
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We here show that the early postmitotic stage of granule cell development during adult hippocampal neurogenesis is characterized by the transient expression of calretinin (CR). CR expression was detected as early as 1 day after labeling dividing cells with bromodeoxyuridine (BrdU), but not before. Staining for Ki-67 confirmed that no CR-expressing cells were in cell cycle. Early after BrdU, CR colocalized with immature neuronal marker doublecortin; and later with persisting neuronal marker NeuN. BrdU/CR-labeled cells were negative for GABA and GABAA1 receptor, but early on expressed granule cell marker Prox-1. After 6 weeks, no new neurons expressed CR, but all contained calbindin. Stimuli inducing adult neurogenesis have limited (enriched environment), strong (voluntary wheel running), and very strong effects on cell proliferation (kainate-induced seizures). In these models the induction of cell proliferation was paralleled by an increase of CR-positive cells, indicating the stimulus-dependent progression from cell division to a postmitotic stage.
Details
Original language | English |
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Pages (from-to) | 603-13 |
Number of pages | 11 |
Journal | Molecular and cellular neurosciences |
Volume | 24 |
Issue number | 3 |
Publication status | Published - Nov 2003 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
Scopus | 0344305420 |
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ORCID | /0000-0002-5304-4061/work/152544169 |
Keywords
Keywords
- Aging/metabolism, Animals, Calbindin 2, Calbindins, Cell Differentiation/physiology, Cell Division/physiology, Dentate Gyrus/cytology, Doublecortin Domain Proteins, Environment, Controlled, Female, Homeodomain Proteins/metabolism, Ki-67 Antigen/metabolism, Mice, Mice, Inbred C57BL, Microtubule-Associated Proteins, Models, Biological, Motor Activity/physiology, Neurons/cytology, Neuropeptides/metabolism, S100 Calcium Binding Protein G/metabolism, Seizures/physiopathology, Stem Cells/cytology, Tumor Suppressor Proteins