Figure 3. Suppression of OXPHOS in Glycolytic Conditions Increases Energy Production.
(A) Electron transport chain schematic. Each subunit is colored according to the results of the RNAi screen in ATP/cell standard deviations from control siRNA.
(B) Results of the RNAi screen presented as percent change in ATP/cell for each subunit.
(C) Percent change in relative ATP/cell was determined compared to DMSO treatment. Measurements were obtained after 4 hours of treatment with ETC complex inhibitors (n=5 for each dose). Error bars represent SD values. *p < 0.05.
(D) Relative ATP/cell was measured in cells transfected with control or selected RC I subunit siRNAs and in cells treated for 500 nM rotenone for 4 hours (n=3 for each condition). Error bars represent SD values. **p < 0.01; ***p < 0.001.
(E) Glucose-to-lactate conversion in control and selected RC I subunit siRNA transfected HeLa cells. Cells were cultured with medium containing 1,6 13C-labeled glucose, and enrichment of 13C-lactate (m+3) in the extracellular medium was measured after 6 hours (n=3 for each condition). Error bars represent SD values. **p < 0.01; ***p < 0.001.
