Dissection of zebrafish shha function using site-specific targeting with a Cre-dependent genetic switch.
- Sugimoto, K., Hui, S.P., Sheng, D.Z., Kikuchi, K.
- eLIFE 6: (Journal)
- Registered Authors
- Hui, Subhra Prakash, Kikuchi, Kazu, Sheng, Delicia
- cardiomyocyte, developmental biology, epicardium, heart development, heart regeneration, knockout animals, stem cells, zebrafish
- MeSH Terms
- Gene Targeting*
- Hedgehog Proteins/genetics*
- Hedgehog Proteins/metabolism*
- Recombination, Genetic
- Zebrafish Proteins/genetics*
- Zebrafish Proteins/metabolism*
- 28513431 Full text @ Elife
Sugimoto, K., Hui, S.P., Sheng, D.Z., Kikuchi, K. (2017) Dissection of zebrafish shha function using site-specific targeting with a Cre-dependent genetic switch.. eLIFE. 6.
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
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Engineered Foreign Genes
Errata and Notes