High-Efficient FLPo Deleter Mice in C57BL/6J Background

Yingjie Wu, Chunxin Wang, Hui Sun, Derek LeRoith, Shoshana Yakar

Research output: Contribution to journalArticlepeer-review


Conditional gene manipulation in mice becomes a routine for genetic studies of mammalian gene functions. Additional site-specific recombinases such as FLP or φ31 provide one more level of gene manipulation flexibility. The recombination activity of the currently available FLP deleter mice remains low. We generated a new FLP deleter mouse line with the mouse codon-optimized FLPo gene in C57BJ/6 background, which showed superior recombination efficacy in comparison to FLPe deleter mice. 100% complete removal of FRT-flanked Neo cassette was observed in all F1 progeny mice carrying both FLPo and Neo cassette, which can be transmitted to F2 generation independent of FLPo activity. Our new FLPo transgenic mice (on pure C57BJ/6 background) will largely facilitate the gene targeting process and is valuable for conditional gene manipulation.

Original languageEnglish (US)
Article numbere0008054
JournalPloS one
Issue number11
StatePublished - 2009

ASJC Scopus subject areas

  • General


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