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Esrrb ‐Cre excises loxP ‐flanked alleles in early four‐cell embryos
Author(s) -
Lee Sungeun,
Pallerla Srinivas R.,
Kim Suyeon,
Shaffer Benjamin,
Simerly Calvin R.,
Chaillet J. Richard,
Barak Yaacov
Publication year - 2016
Publication title -
genesis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.093
H-Index - 110
eISSN - 1526-968X
pISSN - 1526-954X
DOI - 10.1002/dvg.22912
Subject(s) - biology , cre lox recombination , embryo , allele , cre recombinase , genetics , gene , transgene , genetically modified mouse
Summary Among transgenic mice with ubiquitous Cre recombinase activity, all strains to date excise loxP ‐flanked (floxed) alleles either at or before the zygote stage or at nondescript stages of development. This manuscript describes a new mouse strain, in which Cre recombinase, integrated into the Esrrb locus, efficiently excises floxed alleles in pre‐implantation embryos at the onset of the four‐cell stage. By enabling inactivation of genes only after the embryo has undergone two cleavages, this strain should facilitate in vivo studies of genes with essential gametic or zygotic functions. In addition, this study describes a new, highly pluripotent hybrid C57BL/6J x 129S1/SvImJ mouse embryonic stem cell line, HYB12, in which this knockin and additional targeted alleles have been generated. genesis 54:53–61, 2016. © 2015 Wiley Periodicals, Inc.