BRC No.RBRC00915
TypeTargeted Mutation CongenicCartagena
SpeciesMus musculus
Strain nameC.Cg-Irf9<tm1Ttg>/TtgRbrc
Former Common nameIRF-9 KO/BALB/c; BALB/cAJcl-Isgf3g<tm1>, IRF-9 Knockout mouse, BALB/c
H-2 Haplotype
ES Cell lineTT2 [(C57BL/6NCrlj x CBA/JNCrlj)F1]
Background strainBALB/cAJcl
Strain developmentDeveloped by Tadatsugu Taniguchi, Graduate School of Medicine and Faculty of Medicine, University of Tokyo. RBRC00915: Backcrossed to BALB/c (N8 generations), RBRC00916: Backcrossed to C57BL/6J (over N13 generations).
Strain descriptionIRF-9 gene knockout mice. Homozygous mutant mice exhibit lower serum interferon levels in response to viral infection. BALB/c background (RBRC00915), C57BL/6 background (RBRC00916).
Colony maintenanceHomozygote x Homozygote
ReferencesGenes Cells, 1, 115-124 (1996). 9078371

Health Report

Examination Date / Room / Rack2008/02/18Room:3-CRack:I


Gene info
Gene symbolGene nameChr.Allele symbolAllele namePromoter
Irf9interferon regulatory factor 914Irf9<tm1Ttg>targeted mutation 1, Tadatsugu Taniguchi

Gene symbolGene nameChr.Allele symbolAllele namePromoter
neoneomycin resistance gene (E. coli)14mouse phosphoglycerate kinase promoter (PGK promoter)


Donor DNAmouse IRF-9 genomic DNA, E. coli neo, mouse phosphoglycerate kinase promoter (PGK promoter)
Research applicationImmunology and Inflammation Research
Specific Term and ConditionsThe RECIPIENT of BIOLOGICAL RESOURCE shall obtain a prior written consent on use of it from the DEPOSITOR. In publishing the research results to be obtained by use of the BIOLOGICAL RESOURCE, an acknowledgment to the DEPOSITOR is requested. The RECIPIENT shall inform the DEPOSITOR about the purpose of the use of the BIOLOGICAL RESOURCE and shall limit the use within the scope of the purpose described in this Agreement. The RECIPIENT shall inform the DEPOSITOR about the results obtained by the use of the BIOLOGICAL RESOURCE.
DepositorTadatsugu Taniguchi (The University of Tokyo)
Strain Statusan icon for Frozen embryosFrozen embryos
Strain AvailabilityRecovered litters from cryopreserved embryos (2 to 4 months)
Additional Info.Genotyping protocol -PCR-
Mouse of the Month May 2005

BRC mice in Publications

Thibault DL, Chu AD, Graham KL, Balboni I, Lee LY, Kohlmoos C, Landrigan A, Higgins JP, Tibshirani R, Utz PJ.
IRF9 and STAT1 are required for IgG autoantibody production and B cell expression of TLR7 in mice.
J. Clin. Invest. 118(4) 1417-26(2008) 18340381

Martinet V1, Tonon S1, Torres D1, Azouz A1, Nguyen M1, Kohler A1, Flamand V1, Mao CA2, Klein WH2, Leo O1, Goriely S1.
Type I interferons regulate eomesodermin expression and the development of unconventional memory CD8(+) T cells.
Nat Commun (2015) 25953241