mortality/aging
• less than 3% of the expected 25% of mutant pups are born and those pups then die immediately
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Allele Symbol Allele Name Allele ID |
Tg(ACTA1-rtTA,tetO-cre)102Monk transgene insertion 102, Douglas Monks MGI:4818775 |
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Summary |
3 genotypes
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♀ | phenotype observed in females |
♂ | phenotype observed in males |
N | normal phenotype |
• less than 3% of the expected 25% of mutant pups are born and those pups then die immediately
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♀ | phenotype observed in females |
♂ | phenotype observed in males |
N | normal phenotype |
• dox-treated mice develop increased white adipose tissue in all depots, including the inguinal, interscapular, perigonadal, perinephric, and interscarpular adipose tissues but not brown adipose tissue
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• mice treated with doxycycline (dox) for 7 days at 8 weeks of age exhibit a higher fat mass within 4 weeks after dox treatment
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• adipocyte size is increased in all white adipose tissue depots of dox-treated mice
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• mice treated with doxycycline (dox) for 7 days at 8 weeks of age exhibit a higher fat mass within 4 weeks after dox treatment
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♀ | phenotype observed in females |
♂ | phenotype observed in males |
N | normal phenotype |
• 6-month-old doxycycline-treated mice show decreased performance on the rotarod test and the two-limb hanging test in response to fasting, but not in the fed state
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• some skeletal muscle mitochondria from doxycycline-treated mice appear swollen, empty and with cristae disorganization
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• isolated mitochondria from skeletal muscle shows reduced oxidative phosphorylation complex III (CIII) activity
• cytochrome c production in isolated mitochondria is reduced to 54% of wild-type
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• doxycycline-treated mice exhibit reduced body weight by 5-6 months of age
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• 5-month-old doxycycline-treated mice show a poorer response to fasting, showing greater weight loss after fasting than controls
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• some skeletal muscle mitochondria from doxycycline-treated mice appear swollen, empty and with cristae disorganization
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• mice show increased skeletal muscle de novo lipid synthesis in close contact with dysfunctional mitochondria
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• skeletal muscle from doxycycline-treated mice shows fiber shrinkage, sarcomere disorganization and debris, indicating myopathy
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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 12/10/2024 MGI 6.24 |
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