title: Differential expression of id genes and their potential regulator znf238 in zebrafish adult neural progenitor cells and neurons suggests distinct functions in adult neurogenesis.
abstract: Teleost fish display a remarkable ability to generate new neurons and to repair brain lesions during adulthood. They are, therefore, a very popular model to investigate the molecular mechanisms of constitutive and induced neurogenesis in adult vertebrates. In this study, we investigated the expression patterns of inhibitor of DNA binding (id) genes and of their potential transcriptional repressor, znf238, in the whole brain of adult zebrafish. We show that while id1 is exclusively expressed in ventricular cells in the whole brain, id2a, id3 and id4 genes are expressed in broader areas. Interestingly, znf238 was also detected in these regions, its expression overlapping with id2a, id3 and id4 expression. Further detailed characterization of the id-expressing cells demonstrated that (a) id1 is expressed in type 1 and type 2 neural progenitors as previously published, (b) id2a in type 1, 2 and 3 neural progenitors, (c) id3 in type 3 neural progenitors and (d) id4 in postmitotic neurons. Our data provide a detailed map of id and znf238 expression in the brain of adult zebrafish, supplying a framework for studies of id genes function during adult neurogenesis and brain regeneration in the zebrafish.
authors.affiliation: Karlsruhe Institute of Technology, Campus Nord, Institute of Toxicology and Genetics, Karlsruhe, Germany; Inserm, UMR 1188 Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, Sainte-Clotilde, F-97490, France; Université de La Réunion, UMR 1188, Sainte-Clotilde, F-97490, France. Electronic address: nicolas.diotel@univ-reunion.fr.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Diotel
authors.affiliation: Karlsruhe Institute of Technology, Campus Nord, Institute of Toxicology and Genetics, Karlsruhe, Germany.
authors.forename: Tanja
authors.initials: T
authors.lastname: Beil
authors.affiliation: Karlsruhe Institute of Technology, Campus Nord, Institute of Toxicology and Genetics, Karlsruhe, Germany.
authors.forename: Uwe
authors.initials: U
authors.lastname: Strähle
authors.affiliation: Karlsruhe Institute of Technology, Campus Nord, Institute of Toxicology and Genetics, Karlsruhe, Germany. Electronic address: Sepand.Rastegar@kit.edu.
authors.forename: Sepand
authors.initials: S
authors.lastname: Rastegar
mesh_terms: D053687:Adult Stem Cells / Q000166:cytology / Q000378:metabolism / Q000502:physiology; D000818:Animals; D001921:Brain / Q000378:metabolism / Q000502:physiology; D002454:Cell Differentiation / Q000235:genetics; D020869:Gene Expression Profiling; D051796:Inhibitor of Differentiation Proteins / Q000096:biosynthesis / Q000235:genetics*; D058953:Neural Stem Cells / Q000166:cytology / Q000378:metabolism / Q000502:physiology*; D055495:Neurogenesis / Q000235:genetics*; D009474:Neurons / Q000166:cytology / Q000378:metabolism / Q000502:physiology*; D012097:Repressor Proteins / Q000096:biosynthesis / Q000235:genetics*; D015027:Zebrafish / Q000235:genetics*
chemical_list: D051796:Inhibitor of Differentiation Proteins; D012097:Repressor Proteins
keywords: Adult neurogenesis; Expression pattern; Inhibitor of DNA binding (id); Neural progenitor; Radial glial cells; Rp58 (znf238); Stem cell; Telencephalon; Teleost; Zebrafish