Research Paper Volume 8, Issue 7 pp 1330—1349

Mitophagy-driven mitochondrial rejuvenation regulates stem cell fate

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Figure 3. Mitophagy deficiency impairs the bioenergetic transition associated with nuclear reprogramming. (A) Calculated glycolysis (maximum rate measurement before oligomycin injection – Last rate measurement before glucose injection [1]), glycolytic capacity (maximum rate measurement after oligomycin injection – Last rate measurement before glucose injection [2]), and glycolytic reserve (glycolytic capacity – glycolysis [3]) were calculated with normalized ECAR values in PINK1+/+- and PINK1−/−-iPSCs (n = 2). (B) Two-dimensional PLS-DA models to view the separation of the two groups (PINK1+/+- and PINK1−/−-iPSCs) following GC-EI-QTOF-MS-based metabolomic profiling. (C) Metabolites in PINK1+/+-iPSCs were extracted and quantitatively analyzed by GC-EI-QTOF-MS and compared with metabolites from PINK−/−-iPSCs (n = 2). Significantly increased and decreased metabolites are shown using yellow-red and light blue-dark blue color scales, respectively (see also Table 1).