liver/biliary system
N |
• hepatocyte proliferation is not increased compared to wild-type
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• hepatic triglyceride content is significantly increased in fed mice
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• primary hepatocytes display increase in lipid content similar to that observed in vivo when cells are cultured under serum free conditions
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• four biosynthetic enzymes show downregulation of mRNA expression in mutants; the mRNAs for ATP citrate lyase (ACL), malic enzyme (ME), acetyl-CoA synthase 2 (ACAS2) and glutamate-oxaloacetate transaminase 1 (GOT1) are reduced in mutants relative to wild type
• metabolic regulation of ACL and ACAS2 is severely compromised in mutants upon fasting, while regulation of ME is inverted (upregulation) with respect to wild-type in which these enzymes are downregulated
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homeostasis/metabolism
• hepatic triglyceride content is significantly increased in fed mice
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adipose tissue
N |
• no differences in amount or appearance of white adipose tissue is seen relative to wild-type
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