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BrdU-, neuroD (nrd)- and Hu-studies reveal unusual non-ventricular neurogenesis in the postembryonic zebrafish forebrain

Research output: Contribution to journalArticlepeer-review

Abstract

In the postembryonic zebrafish forebrain, subpial locations of neurogenesis do exist in the early cerebellar external granular layer, and - unusually among vertebrates - in the primordial pretectal (M1) and preglomerular (M2) Anlagen as shown here with 5-bromo-2′-deoxyuridine (BrdU)/Hu-immunocytochemistry and in situ hybridization of neuroD. An intermediate BrdU incubation time of 12-16h reveals in addition to proliferative ventricularly located cells those in M1 and M2. This BrdU saturation-labeling shows - in conjunction with a Hu-assay demonstrating earliest neuronal differentiation - that proliferating cells in M1 and M2 represent neuronal progenitors. This is demonstrated by single BrdU-labeled and double BrdU-/Hu-labeled cells in these aggregates. Further, expression of NeuroD - a marker for freshly determined neuronal cells - confirms this unusual subpial postembryonic forebrain neurogenesis.

Original languageEnglish
Pages (from-to)123-135
Number of pages13
JournalMechanisms of Development
Volume117
Issue number1-2
DOIs
StatePublished - Sep 2002

Keywords

  • 5-Bromo-2′-deoxyuridine
  • Cerebellum
  • Diencephalon
  • External granular layer
  • Forebrain
  • Hu-protein
  • neuroD
  • nrd
  • Posterior tuberculum
  • Preglomerular area
  • Pretectum
  • Proliferating cell nuclear antigen
  • Telencephalon
  • Zebrafish

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