Figure 11. Model of the regulation of Foxo3 subcellular localization in erythropoiesis.
Inhibition of EpoR signaling, which includes inhibition of the PI3-kinase/AKT pathway, as a result of downregulation of EpoR on erythroblasts, coupled with accumulation of hemoglobin, may result in ROS signaling, leading to Foxo3 nuclear localization and activation.