Figure 8. Phagocytosis of AB by HSC induces different survival pathways.
Engulfment of AB induces a JAK1/STAT3 mediated survival pathway leading to an upregulation of Mcl-1. Phagocytosis also induces Akt phosphorylation via the PI3K, and this contributes to NF-κB activation. As a result, the A1 anti apoptotic protein is upregulated in phagocytosing HSC, in a PI3K-dependent manner.