Related Experiment Video
Updated: Jul 30, 2026

15:13
Structure-function Studies in Mouse Embryonic Stem Cells Using Recombinase-mediated Cassette Exchange
Published on: April 27, 2017
Efficient FLP recombination in mouse ES cells and oocytes
J Schaft1, R Ashery-Padan, F van der Hoeven
1Gene Expression Program, EMBL, Heidelberg, Germany.
Abstract:
We report an improved vector, pCAGGS-FLPe, for transient expression of the enhanced FLP recombinase in mouse ES cells and oocytes. In standard transfection experiments, about 6% of total ES colonies showed FLP recombination, albeit with mosaicism within each colony. After microinjection of pCAGGS-FLPe into oocytes, about one-third of heterozygotic mice born showed complete FLP recombination. Thus pCAGGS-FLPe presents two practical options for removal of FRT cassettes in mice.

