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Comparative analysis of genes regulated by Dzip1/ iguana and hedgehog in zebrafish
Author(s) -
Arnold Corey R.,
Lamont Ryan E.,
Walker John T.,
Spice Peter J.,
Chan ChiKin,
Ho ChiYip,
Childs Sarah J.
Publication year - 2015
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/dvdy.24237
Subject(s) - cyclopamine , biology , hedgehog , zebrafish , hedgehog signaling pathway , cilium , microbiology and biotechnology , smoothened , in situ hybridization , genetics , gene , mutant , morpholino , indian hedgehog , gene expression
Background: The zebrafish genetic mutant iguana ( igu ) has defects in the ciliary basal body protein Dzip1, causing improper cilia formation. Dzip1 also interacts with the downstream transcriptional activators of Hedgehog (Hh), the Gli proteins, and Hh signaling is disrupted in igu mutants. Hh governs a wide range of developmental processes, including stabilizing developing blood vessels to prevent hemorrhage. Using igu mutant embryos and embryos treated with the Hh pathway antagonist cyclopamine, we conducted a microarray to determine genes involved in Hh signaling mediating vascular stability. Results: We identified 40 genes with significantly altered expression in both igu mutants and cyclopamine‐treated embryos. For a subset of these, we used in situ hybridization to determine localization during embryonic development and confirm the expression changes seen on the array. Conclusions: Through comparing gene expression changes in a genetic model of vascular instability with a chemical inhibition of Hh signaling, we identified a set of 40 differentially expressed genes with potential roles in vascular stabilization. Developmental Dynamics 244:211–223, 2015 . © 2015 Wiley Periodicals, Inc.