Fig. 10
Loss of Glo2 leads to reduced P70–S6 kinase phosphorylation and hexose content in the liver. The knockout of glyoxalase 2 via CRISPR-Cas9 did not affect the redox status or impair the survival and general development of glo2−/− zebrafish. The liver, the organ with the highest glo2 expression, showed reduced P70–S6 kinase phosphorylation and reduced glucose concentrations, while AKT phosphorylation remained unaffected. Blood glucose remained normal. Skeletal muscle showed a strong increase of glucose concentrations, glycolysis and TCA cycle activity. Gluconeogenesis in contrast was downregulated. The retinal vasculature and kidneys did not show altered morphology and architecture.