FTO regulates downstream events of activated STAT3 in co-transfected HuH7 cells. HuH7 cells were co-transfecting with both LepRb and FTO vectors (empty vector as control) for 36 hours. Cells were then serum starved for 16 hours before three-hour leptin stimulation (100 ng/mL). A) Effect of FTO overexpression on G6P mRNA levels of leptin-stimulated co-transfected HuH7cells, measured by real-time RT-PCR and expressed relative to untreated control co-transfected HuH7 cells. B) Effect of FTO overexpression on mtDNA amount of co-transfected HuH7 cells. Data are means ± SEM (n = 6/group). *p < 0.05 compared to untreated control cells A) or to mock transfected cells B). G6P: Glucose 6 phosphatase. TBP: TATA box binding protein.