The role of cardiac glycosides in influencing breast cancer cell proliferation
نویسندگان
چکیده
Introduction Cardiac Glycosides (CGs) are commonly used to treat congestive heart failure. CGs inhibit the Sodium Potassium ATPase (Na+/K+ ATPase) pump. Interestingly, CGs have been suggested to inhibit proliferation and migration of breast cancer cells. A pool of non-pumping Na+/K+ ATPase reportedly localizes in specific membrane organelles, caveolae, by interacting with the structural protein caveolin-1. It has been postulated that Na+/K+ ATPase forms a complex with caveolin-1 and the tyrosine kinase Src, and that binding of CGs to Na+/K+ ATPase activates Src-dependent signalling cascades. In this project we explored whether CGs reduce proliferation in breast cancer cells and whether these effects might involve Src and ERK (Extracellular-signal-Regulated Kinases).
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