title: Dynamic and coordinated expression profile of dbl-family guanine nucleotide exchange factors in the developing mouse brain.
abstract: Dbl-family guanine nucleotide exchange factors (Dbl-GEFs) act as activators of Rho-like small G proteins such as Rac1, Cdc42 and RhoA. Recently, some GEFs have been suggested to play important roles in the development of the nervous system. Here, we report a comprehensive expression profile analysis of 20 Dbl-GEFs that have yet to be well investigated. Northern analyses of murine mRNAs from brains of E13, E17, P7 and adult mice revealed expression of 18 out of 20 GEFs in some or all stages. In addition, we found that three human GEFs were highly expressed in the brain. Examination of the spatial expression patterns of five GEFs in embryos or neonatal brain by in situ hybridization revealed distinct patterns for each GEF. Our study reveals the dynamic and coordinated expression profiles of the Dbl-GEFs and provides a basic framework for understanding the function of GEFs in neural development.
authors.affiliation: Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, 606-8501 Kyoto, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Yoshizawa
authors.forename: Masaki
authors.initials: M
authors.lastname: Sone
authors.forename: Naoki
authors.initials: N
authors.lastname: Matsuo
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nagase
authors.forename: Osamu
authors.initials: O
authors.lastname: Ohara
authors.forename: Yo-ichi
authors.initials: Y
authors.lastname: Nabeshima
authors.forename: Mikio
authors.initials: M
authors.lastname: Hoshino
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001921:Brain / Q000196:embryology* / Q000378:metabolism; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D020662:Guanine Nucleotide Exchange Factors / Q000096:biosynthesis / Q000235:genetics*; D006801:Humans; D017403:In Situ Hybridization; D051379:Mice; D008969:Molecular Sequence Data; D005810:Multigene Family; D016415:Sequence Alignment
chemical_list: D020662:Guanine Nucleotide Exchange Factors