PMThe aminobisphosphonate zoledronic acid(ZOL) has elicited significant attention due to its remarkable anti-tumoral activity,though its detailed mechanism of action remains unclear. Here,we demonstrate the existence of a nuclear GSK3-NFATc2 stabilization pathway that promotes cancer growth in vitro and in vivo and serves as a bonafide target of ZOL. Specifically, the serine/threonine kinase GSK3 stabilizes nuclear NFATc2 through phosphorylation of the serine-rich SP2 domain, thus protecting the transcription factor from E3-ubiquitin ligase HDM2 mediated proteolysis. ZOL disrupts this NFATc2...