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insulin stimulates Tipifarnib the sterol regulatory element binding protein transcription factor to promote hepatic lipogenesis. We find that this induction is dependent on the mammalian target of rapamycin complex 1. To help define the role of mTORC1 in the regulation of SREBP1c in the liver, we produced mice with liver specific deletion of TSC1, which in insulin independent activation of mTORC1. Surprisingly, the mice are safeguarded from diet and age induced hepatic steatosis and show hepatocyte intrinsic defects in de novo lipogenesis and service. These phenotypes result from attenuation of Akt signaling driven by mTORC1 dependent insulin resistance. Consequently, mTORC1 activation is not sufficient to promote hepatic SREBP1c within the lack of Akt signaling, revealing the existence of one more downstream route also necessary for this induction. We provide evidence that this mTORC1 independent pathway involves Akt mediated Endosymbiotic theory suppression of Insig2a, a liver specific transcript encoding the SREBP1c inhibitor INSIG2. The liver is a key body in the systemic response to insulin, preventing both glucose and fat metabolic process. Hepatocytes answer insulin by halting gluconeogenesis and increasing de novo lipid synthesis. Genetic mouse models have demonstrated that these two responses to insulin occur, at least in part, downstream of the protein kinase Akt2. These effects are mediated by akt2 largely through the regulation of two downstream transcription factors, FOXO1 and SREBP1c, which get a handle on the appearance of the metabolic enzymes underlying these processes. FOXO1 encourages gluconeogenic gene expression in the liver and is immediately phosphorylated and inhibited by Akt. Whilst the mechanisms are less well recognized, Akt signaling seems to induce de novo lipid synthesis through the activation of SREBP isoforms. SREBP1c will be the insulin activated isoform in the liver Gemcitabine in charge of promoting fatty-acid synthesis and inducing lipogenic gene expression. Akt service is apparently both necessary and sufficient for the induction of fat deposition and hepatic SREBP1c. A crucial feature of hepatic insulin signaling is that get a handle on of gluconeogenesis and lipogenesis is differentially impacted under pathological conditions of insulin resistance related to diabetes. Under such conditions, insulin fails to reduce glucose production by the liver, as the induction of hepatic lipogenesis is sustained, thereby adding to the hyperglycemic and hyperlipidemic states. Understanding this pathological phenomenon, referred to as selective insulin resistance, takes a greater understanding of how insulin and Akt determine hepatic lipid metabolic process.