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Phenotypes Associated with This Genotype
Genotype
MGI:5425617
Allelic
Composition
Gpx4tm1.1Qra/Gpx4tm1.1Qra
Gt(ROSA)26Sortm1(cre/ERT)Nat/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gpx4tm1.1Qra mutation (1 available); any Gpx4 mutation (80 available)
Gt(ROSA)26Sortm1(cre/ERT)Nat mutation (3 available); any Gt(ROSA)26Sor mutation (1062 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• all mice die within 2 weeks of the 4th injection of tamoxifen (4 injections administered over an 8 day period)

growth/size/body
• starting after 3 injections of tamoxifen in mice at 6 - 9 months of age
• becomes significant 1 week after the 4th injection of tamoxifen

cellular
• elevated astrocyte activation in the hippocampal region 1 week after the last tamoxifen injection
• 1 week after the last tamoxifen injection
• enhanced lipid peroxidation and impaired electron transport chain activity and ATP production in mitochondria 1 week after the last tamoxifen injection

behavior/neurological
• seen in tamoxifen treated mice shortly before death

nervous system
• elevated astrocyte activation in the hippocampal region 1 week after the last tamoxifen injection
• in the hippocampal region 1 week after the last tamoxifen injection

liver/biliary system
• 1 week after the last tamoxifen injection


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory