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Phenotypes Associated with This Genotype
Genotype
MGI:6102945
Allelic
Composition
Gnastm5.1Lsw/Gnastm5.1Lsw
Tg(Fabp4-cre)1Abel/0
Genetic
Background
involves: FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gnastm5.1Lsw mutation (1 available); any Gnas mutation (53 available)
Tg(Fabp4-cre)1Abel mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle

mortality/aging
• by 14 weeks in severely affected mice

homeostasis/metabolism
N
• surviving mice exhibit normal food intake, energy expenditure and respiratory ratio at ambient or cold temperatures
• mice exhibit normal T4 levels
• in the muscle of mice fed a high-fat diet
• in response to cold exposure on a high fat diet, mice exhibit reduced body temperature and a 3-fold increase in energy expenditure compared with control mice
• under basal fed conditions
• under basal fed conditions
• at 3 months in surviving mice
• however, adiponectin levels are normal
• increased norephinephrine excretion
• 3-fold in response to cold exposure on a high fat diet

adipose tissue
• almost completely absent in severely affected mice
• at 3 months in surviving mice
• however, no macrophage infiltration is observed
• embryonic cells exhibit reduced adipogenesis compared with control cells
• at 3 months in surviving mice
• however, weights of brown adipose tissue, liver, kidney and heart are normal
• in epididymal WAT
• almost completely absent in severely affected mice
• almost completely absent in severely affected mice
• almost completely absent in severely affected mice
• almost completely absent in severely affected mice
• isoproterenol-treated white adipose tissue adipocytes exhibit reduced lipolytic response compared with control cells

growth/size/body
• at 3 months in surviving mice
• however, weights of brown adipose tissue, liver, kidney and heart are normal
• at 3 months in surviving mice
• in severely affected mice
• at 3 months in surviving mice
• however, weights of brown adipose tissue, liver, kidney and heart are normal
• at 3 months in surviving mice

behavior/neurological
• in cold-exposed mice

liver/biliary system

renal/urinary system
• increased norephinephrine excretion

integument
• almost completely absent in severely affected mice

cellular
• in the muscle of mice fed a high-fat diet


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
03/25/2025
MGI 6.24
The Jackson Laboratory