Title iSuRe-Cre is a genetic tool to reliably induce and report Cre-dependent genetic modifications
Authors FERNÁNDEZ CHACÓN, MACARENA, Casquero-Garcia, Veronica , Luo, Wen , Francesca Lunella, Federica , Ferreira Rocha, Susana , Del Olmo-Cabrera, Sergio , Benedito, Rui
External publication Si
Means Nature Communications
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 12.121
SJR Impact 5.569
Publication date 22/05/2019
ISI 000468603500001
DOI 10.1038/s41467-019-10239-4
Abstract Most biomedical research aimed at understanding gene function uses the Cre-Lox system, which consists of the Cre recombinase-dependent deletion of genes containing LoxP sites. This system enables conditional genetic modifications because the expression and activity of the recombinase Cre/CreERT2 can be regulated in space by tissue-specific promoters and in time by the ligand tamoxifen. Since the precise Cre-Lox recombination event is invisible, methods were developed to report Cre activity and are widely used. However, numerous studies have shown that expression of a given Cre activity reporter cannot be assumed to indicate deletion of other LoxP-flanked genes of interest. Here, we report the generation of an inducible dual reporter-Cre mouse allele, iSuRe-Cre. By significantly increasing Cre activity in reporter-expressing cells, iSuRe-Cre provides certainty that these cells have completely recombined floxed alleles. This genetic tool increases the ease, efficiency, and reliability of conditional mutagenesis and gene function analysis.
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