Mitochondrial genes that were significantly different between HFCs and HKCs, either in controls, T1, or T3. A) SLC25A4 was significantly up-regulated in control HKCs compared to control HCFs. T3 treatment led to a significant down-regulation of SLC25A4 in HKCs compared to HCFs; B) SLC25A2 was significantly down-regulated in HKCs, compared to HCFs, in both T1 and T3; C) SLC25A21 was significantly down-regulated in HKCs, compared to HCFs, in both T1 and T3; D) SLC25A31 was significantly up-regulated in control HKCs compared to control HCFs. T3 treatment led to a significant down-regulation of SLC25A31 in HKCs compared to HCFs. All samples were repeated at least three times, with p<0.05 considered to be statistically significant ($$$p<0.0001, $$p<0.001, $p<0.01, ***p<0.0005, **p<0.005, *p<0.05).