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Phenotypes Associated with This Genotype
Genotype
MGI:4358091
Allelic
Composition
Tg(tetO-MYC)36aBop/0
Tg(Cebpb-tTA)5Bjd/0
Genetic
Background
involves: FVB/N * NMRI
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(Cebpb-tTA)5Bjd mutation (3 available)
Tg(tetO-MYC)36aBop mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• following withdrawal of doxycycline, all mice succumb to liver tumors within 2 weeks
• median survival of mutants is 31 weeks following doxycycline withdrawal to induce MYC expression
• median survival of mutants with tumors is 27 weeks following doxycycline withdrawal to induce MYC expression

neoplasm
• following withdrawal of doxycycline, mice develop tumors with a latency of 12 weeks and all mice succumb to liver tumors within 2 weeks (J:93899)
• liver tumors that develop in mice after doxycycline withdrawal are invasive and metastasis into the thoracic cavity and lung parenchyma (J:93899)
• however, re-establishment of doxycycline-treatment produces rapid and sustained tumor regression (J:93899)
• repeated withdrawal and treatment with doxycyclineinduces and represses, respectively, tumor formation (J:93899)
• liver tumors that develop in mice after doxycycline withdrawal resemble hepatocellular carcinomas and/or hepatoblastomas
• liver tumors that develop in mice after doxycycline withdrawal resemble hepatocellular carcinomas and/or hepatoblastomas (J:93899)
• tumors that form in mice after doxycycline withdrawal are composed of hepatocellular neoplasms characterized by sheets of cells with occasional mitotic figure, slightly pleomorphic nuclei, and prominent nucleoli (J:172430)
• tumors show a range of differentiation between well- and moderately-differentiated hepatocellular carcinoma (J:172430)
• mice develop multifocal hepatocellular carcinoma within 5-8 weeks of age when doxycycline is removed at birth, showing invasive tumor cells in glandular and solid pattern infiltrating adjacent normal liver tissue (J:186226)
• in doxycycline-treated mice (J:190067)
• however, treatment with adeno-associated virus-expressing Mir122 suppresses tumorigenesis (J:190067)
• doxycycline-treated mice infected with an adeno-associated virus-expressing Mir122 exhibit suppression of tumorigenesis tumor cell proliferation compared with control mice

liver/biliary system
• following withdrawal of doxycycline, mice develop tumors with a latency of 12 weeks and all mice succumb to liver tumors within 2 weeks (J:93899)
• liver tumors that develop in mice after doxycycline withdrawal are invasive and metastasis into the thoracic cavity and lung parenchyma (J:93899)
• however, re-establishment of doxycycline-treatment produces rapid and sustained tumor regression (J:93899)
• repeated withdrawal and treatment with doxycyclineinduces and represses, respectively, tumor formation (J:93899)
• liver tumors that develop in mice after doxycycline withdrawal resemble hepatocellular carcinomas and/or hepatoblastomas
• liver tumors that develop in mice after doxycycline withdrawal resemble hepatocellular carcinomas and/or hepatoblastomas (J:93899)
• tumors that form in mice after doxycycline withdrawal are composed of hepatocellular neoplasms characterized by sheets of cells with occasional mitotic figure, slightly pleomorphic nuclei, and prominent nucleoli (J:172430)
• tumors show a range of differentiation between well- and moderately-differentiated hepatocellular carcinoma (J:172430)
• mice develop multifocal hepatocellular carcinoma within 5-8 weeks of age when doxycycline is removed at birth, showing invasive tumor cells in glandular and solid pattern infiltrating adjacent normal liver tissue (J:186226)
• in doxycycline-treated mice (J:190067)
• however, treatment with adeno-associated virus-expressing Mir122 suppresses tumorigenesis (J:190067)


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
04/30/2024
MGI 6.23
The Jackson Laboratory