PUBLICATION

Dissection of zebrafish shha function using site-specific targeting with a Cre-dependent genetic switch.

Authors
Sugimoto, K., Hui, S.P., Sheng, D.Z., Kikuchi, K.
ID
ZDB-PUB-170518-2
Date
2017
Source
eLIFE   6: (Journal)
Registered Authors
Hui, Subhra Prakash, Kikuchi, Kazu, Sheng, Delicia
Keywords
cardiomyocyte, developmental biology, epicardium, heart development, heart regeneration, knockout animals, stem cells, zebrafish
MeSH Terms
  • Animals
  • Gene Targeting*
  • Heart/embryology*
  • Hedgehog Proteins/genetics*
  • Hedgehog Proteins/metabolism*
  • Morphogenesis
  • Recombination, Genetic
  • Zebrafish/embryology*
  • Zebrafish/genetics*
  • Zebrafish Proteins/genetics*
  • Zebrafish Proteins/metabolism*
PubMed
28513431 Full text @ Elife
Abstract
Despite the extensive use of zebrafish as a model organism in developmental biology and regeneration research, genetic techniques enabling conditional analysis of gene function are limited. In this study, we generated Zwitch, a Cre-dependent invertible gene-trap cassette, enabling the establishment of conditional alleles in zebrafish by generating intronic insertions via in vivo homologous recombination. To demonstrate the utility of Zwitch, we generated a conditional sonic hedgehog a (shha) allele. Homozygous shha mutants developed normally; however, shha mutant embryos globally expressing Cre exhibited strong reductions in endogenous shha and shha target gene mRNA levels and developmental defects associated with null shha mutations. Analyzing a conditional shha mutant generated using an epicardium-specific inducible Cre driver revealed unique roles for epicardium-derived Shha in myocardial proliferation during heart development and regeneration. Zwitch will extend the utility of zebrafish in organ development and regeneration research and might be applicable to other model organisms.
Genes / Markers
Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes