Western blot analysis of proteins involved in small GTPase-mediated cell signaling. Breast cancer cell lines MDAMB231 and MDAMB468 were treated with 8 μg/mL lovastatin lactone (Lova Lac) or lovastatin acid (Lova Ac) for 48 hours. For key proteins, western blot analysis was performed based on MDAMB231 cell extracts (for Ras homolog gene family member A (RhoA), cell division cycle 42 (CDC42) and GTPase-activating protein SH3-domain-binding protein 1 - phospho form (pG3BP1)), otherwise both cell lines are shown. Densitometry data were normalized based on the amount of β-actin. Data are presented as means ± standard deviations (n = 3) *P < 0.05;**P < 0.05; ***P < 0.001). Gel images were cropped to improve the clarity and conciseness of the presentation. GDI-2, Rho GDP dissociation inhibitor 2.