EGFR activation promotes tyrosine-phosphorylation of CIC. A, HEK293 cells transfected with the indicated plasmids were lysed and immunoprecipitated (IP) with anti-HA antibody followed by immunoblotting with indicated antibodies. B, MEFs transfected with the indicated plasmids were lysed and immunoprecipitated with anti-HA antibody followed by immunoblotting with indicated antibodies. C, HEK293 cells endogenously tagged with HA-CIC, treated with or without EGF at indicated time points were lysed, and immunoprecipitated with anti-HA antibody followed by immunoblotting with indicated antibodies. D, NHA treated with or without EGF at indicated time points were lysed and immunoprecipitated with anti-CIC antibody followed by immunoblotting with indicated antibodies. WCE, whole-cell extract. Ctr, control.