Figure 7From: Synergy between inhibitors of androgen receptor and MEK has therapeutic implications in estrogen receptor-negative breast cancerThe therapeutic effect of AR and MEK inhibitors on in vivo angiogenesis. (A) Angiogenesis index for each in vivo treatment group. Angiogenesis was measured as the number of CD-31-positive blood vessels in a cross-section of each xenograft tumor. CTL: control group; FLU: flutamide; and PD: PD0325901. *P < 0.03 for PD0325901 monotherapy vs. control and **P < 0.03 for combination therapy vs. monotherapy groups using Mann-Whitney U test. Error bars: ± 2 SEM. (B) Immunohistochemistry (IHC) was used to measure angiogenesis in a control xenograft tumor. Staining was performed using a CD31 rabbit polyclonal antibody. Original magnification, × 40. (C) IHC was used to measure angiogenesis in a PD0325901 monotherapy tumor. Original magnification, × 40. (D) IHC was used to measure angiogenesis in a xenograft tumor treated with combination therapy. Original magnification, × 40.Back to article page