Fig. 1. Up-regulation of c-MYC in AI resistant breast cancer cells.
A. Real time PCR analysis of MYC expression in MCF7aro (hormone stripped for 72 hr) and LTEDaro cells treated with DMSO, testosterone (1nM) or testosterone (1nM) plus fulvestrant (100nM) for 6 hr. Values were normalized to ACTB and plotted relative to the expression of the MCF7aro cells treated with DMSO. Data are means ± SE (n=3).
B. Western blotting analysis of c-MYC expression in whole-cell lysates from MCF7aro or LTEDaro cells transfected with a nontargeting control (Ctrl) siRNA or a siRNA targeting c-MYC for 72 hr.
C. Cell proliferation of MCF7aro or LTEDaro cells transfected with a nontargeting control (Ctrl) siRNA or a siRNA targeting c-MYC. MTT was measured at the indicated time points. Data are means ± SE (n=5).