The Stat1 mouse was developed in the laboratory of Robert Schreiber at the Washington University School of Medicine. The model was created by targeting the Stat1 gene in GS-1 ES cells and injecting the targeted cells into blastocysts. Heterozygotes for the mutation were produced from the chimeras and intercrossed to generate homozygotes. Taconic received stock in 1997. The mice were embryo transfer derived. The original Stat1 model (000679-M) differed from the Taconic 129S6 at two biochemical loci, Pgm1 and Gpi1. In January 2002, the original Stat1 line was backcrossed to the Taconic 129S6/SvEvTac, and animals were selected to match the Pgm1c and Gpi1b alleles of the 129S6. The selected heterozygotes were intercrossed to homozygosity. The line is maintained through incrossing of homozygous mice. This improvement makes the 129S6/SvEvTac a more perfectly matched control for the Stat1 model.
Wild type for Nnt mutation
Meraz MA, White JM, Sheehan KC, Bach EA, Rodig SJ, Dighe AS, Kaplan DH, Riley JK, Greenlund AC, Campbell D, Carver-Moore K, DuBois RN, Clark R, Aguet M, Schreiber RD. (1996) Targeted disruption of the Stat1 gene in mice reveals unexpected physiologic specificity in the JAK-STAT signaling pathway. Cell, 84(3):431-442.