Gal4/UAS transgenic tools and their application to zebrafish.
The ability to regulate gene expression in a cell-specific and temporally restricted manner provides a powerful means to test gene function, bypass the action of lethal genes, label subsets of cells for developmental studies, monitor subcellular structures, and target tissues for selective ablation or physiological analyses. The galactose-inducible system of yeast, mediated by the transcriptional activator Gal4 and its consensus UAS binding site, has proven to be a highly successful and versatile system for controlling transcriptional activation in Drosophila. It has also been used effectively, albeit in a more limited manner, in the mouse. While zebrafish has lagged behind other model systems in the widespread application of Gal4 transgenic approaches to modulate gene activity during development, recent technological advances are permitting rapid progress. Here we review Gal4-regulated genetic tools and discuss how they have been used in zebrafish as well as their potential drawbacks. We describe some exciting new directions, in large part afforded by the Tol2 transposition system, that are generating valuable new Gal4/UAS reagents for zebrafish research.
Halpern
Marnie E
ME
Carnegie Institution for Science, Baltimore, Maryland, USA. halpern@ciwemb.edu
Rhee
Jerry
J
Goll
Mary G
MG
Akitake
Courtney M
CM
Parsons
Michael
M
Leach
Steven D
SD
D000818:Animals; D004268:DNA-Binding Proteins; D004330:Drosophila / Q000235:genetics; D005690:Galactose / Q000378:metabolism*; D005786:Gene Expression Regulation / Q000502:physiology*; D051379:Mice; D030781:Organisms, Genetically Modified; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics* / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism; D015027:Zebrafish / Q000235:genetics*
D004268:DNA-Binding Proteins; C052130:GAL4 protein, S cerevisiae; D029701:Saccharomyces cerevisiae Proteins; D014157:Transcription Factors; D005690:Galactose