Fig. 6. BECN1 directly interacts with STAT3 and attenuates the interaction between STAT3 and JAK2.
a 293T cells were cotransfected with HA-STAT3 and FLAG-BECN1 plasmids, and immunoprecipitation experiments were used to examine the interaction between HA-STAT3 and FLAG-BECN1. b, c Immunoprecipitation was performed to determine the interaction between BECN1 and STAT3 in both HCT116 and LoVo cells. d Immunofluorescence staining showed the endogenous interaction between BECN1 and STAT3 in the cytoplasm of HCT116 cells. Scale bar: 20 μm. e, f Immunoprecipitation was performed with a JAK2 antibody, and western blot assays were used to examine the immunoprecipitated complexes, including JAK2, BECN1, and STAT3, among the indicated groups.