29+ Conditional Knockout Mice Cre Loxp Pictures. All projects are backed by our full in conditional knockout models, one or more critical exons of the target gene are flanked by loxp sequences which can be recognized by cre recombinase. Using recombinant dna technology, loxp sequences are inserted on either side of a gene of interest.
Interestingly, these conditional knockout mice were normal at birth and throughout development, showing no signs of a skeletal phenotype up to 16 weeks of age. The mutant mice gained weight at a significantly slower pace than their normal figure 1. The selection marker neo is flanked by an additional loxp.
The cre/loxp system is one of the most valuable tools for genome engineering.
With a conditional ko, gene inactivation can occur in a certain tissue type or at a specific time point made possible by mating a loxp mouse with a specific cre line available in repositories. The method described in this unit takes advantage of bacterial artificial chromosomes, cre/loxp and flpe/frt systems, and recently evolved recombineering approaches to simplify the preparation of targeting constructs for generation of conditional knockout (cko) animals. (a) the recombination process and the loxp sites used for knocking out ppp2ca. Inducible knockouts • a specific gene can be turned off at specific times by creating an inducible knockout mouse.