title: Purification of neuronal precursors from the adult mouse brain: comprehensive gene expression analysis provides new insights into the control of cell migration, differentiation, and homeostasis.
abstract: The progeny of neural stem cells in the subventricular zone (SVZ) of the adult mammalian brain consists in polysialylated NCAM-expressing immature neurons (PSA(+) cells), which migrate to the olfactory bulb (OB) to differentiate into GABAergic interneurons. We purified murine PSA(+) cells directly from the adult brain by FACS and analyzed their gene expression profile by SAGE. Comparative analyses led to the identification of precursor-enriched genes, including Survivin, Sox-4, Meis2, Dishevelled-2, C3aR1 and Riken 3110003A17, and many so far uncharacterized transcripts. Cluster analysis showed that groups of genes involved in axon guidance and gene clusters implicated in chemotaxis are strongly upregulated, indicating a role of both cues in the control of cell migration in the adult brain. Furthermore, genes involved in apoptosis and cell proliferation are co-expressed, suggesting that the amount of precursors that is present in the adult brain is a result of an equilibrium of these processes.
authors.affiliation: Memorec Biotec GmbH, a Miltenyi Biotec Company, 50829 Cologne, Germany.
authors.forename: Sandra
authors.initials: S
authors.lastname: Pennartz
authors.forename: Richard
authors.initials: R
authors.lastname: Belvindrah
authors.forename: Stefan
authors.initials: S
authors.lastname: Tomiuk
authors.forename: Céline
authors.initials: C
authors.lastname: Zimmer
authors.forename: Kay
authors.initials: K
authors.lastname: Hofmann
authors.forename: Marcus
authors.initials: M
authors.lastname: Conradt
authors.forename: Andreas
authors.initials: A
authors.lastname: Bosio
authors.forename: Harold
authors.initials: H
authors.lastname: Cremer
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000235:genetics; D001921:Brain / Q000166:cytology* / Q000254:growth & development / Q000378:metabolism; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation / Q000235:genetics*; D002455:Cell Division / Q000235:genetics; D002465:Cell Movement / Q000235:genetics*; D002469:Cell Separation / Q000379:methods; D002478:Cells, Cultured; D002633:Chemotaxis / Q000235:genetics; D003463:Cues; D005434:Flow Cytometry; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental / Q000235:genetics; D006706:Homeostasis / Q000235:genetics*; D007395:Interneurons / Q000166:cytology / Q000378:metabolism; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D005810:Multigene Family / Q000235:genetics; D009419:Nerve Tissue Proteins / Q000235:genetics; D039842:Neural Cell Adhesion Molecule L1 / Q000378:metabolism; D009474:Neurons / Q000166:cytology* / Q000378:metabolism; D020411:Oligonucleotide Array Sequence Analysis; D012794:Sialic Acids / Q000378:metabolism; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism
chemical_list: D009419:Nerve Tissue Proteins; D039842:Neural Cell Adhesion Molecule L1; D012794:Sialic Acids; C103469:polysialyl neural cell adhesion molecule