title: Two dynamin-2 genes are required for normal zebrafish development.
abstract: Dynamin-2 (DNM2) is a large GTPase involved in clathrin-mediated endocytosis and related trafficking pathways. Mutations in human DNM2 cause two distinct neuromuscular disorders: centronuclear myopathy and Charcot-Marie-Tooth disease. Zebrafish have been shown to be an excellent animal model for many neurologic disorders, and this system has the potential to inform our understanding of DNM2-related disease. Currently, little is known about the endogenous zebrafish orthologs to human DNM2. In this study, we characterize two zebrafish dynamin-2 genes, dnm2 and dnm2-like. Both orthologs are structurally similar to human DNM2 at the gene and protein levels. They are expressed throughout early development and in all adult tissues examined. Knockdown of dnm2 and dnm2-like gene products resulted in extensive morphological abnormalities during development, and expression of human DNM2 RNA rescued these phenotypes. Our findings suggest that dnm2 and dnm2-like are orthologs to human DNM2, and that they are required for normal zebrafish development.
authors: Department of Neurology, University of Michigan, Ann Arbor, Michigan, United States of America.
authors: Elizabeth M
authors: EM
authors: Gibbs
authors: Ann E
authors: AE
authors: Davidson
authors: Arden
authors: A
authors: Trickey-Glassman
authors: Carey
authors: C
authors: Backus
authors: Yu
authors: Y
authors: Hong
authors: Stacey A
authors: SA
authors: Sakowski
authors: James J
authors: JJ
authors: Dowling
authors: Eva L
authors: EL
authors: Feldman
mesh_terms: D000818:Animals; D030801:Animals, Genetically Modified; D001522:Behavior, Animal / Q000502:physiology; D034285:Dynamin II / Q000235:genetics* / Q000378:metabolism; D009043:Motor Activity / Q000502:physiology; D018482:Muscle, Skeletal / Q000378:metabolism; D010641:Phenotype; D015027:Zebrafish / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism; D029961:Zebrafish Proteins / Q000235:genetics* / Q000378:metabolism
chemical_list: D029961:Zebrafish Proteins; D034285:Dynamin II