Fig. 8.

Overexpression of c-Cbl 70Z in BT474 cells. a BT474 cells were transfected with PSVL-70Z-c-Cbl (OE-70Zc-Cbl) or PSVL vector (Vector) and c-Cbl level was examined by immunoblot analysis. b BT474 cells were transfected with PSVL vector (Vec) or PSVL-70Zc-Cbl (70Z) for 48 h and then examined by immunoprecipitation and immunoblot analysis. c BT474 cells were transfected with PSVL-70Zc-Cbl for 24 h and then treated with vehicle, estrogen (10 nmol/L), or tamoxifen (1 μmol/L) for another 48 h. Total viable cell number was measured by MTT assays. Data represent the average of three independent replicates ± SD. *P < 0.05