In Vitro: TP-3654 demonstrates potent PIM-1 specific cellular activity in the PIM-1/BAD overexpression system with an average EC50 of 67 nM. TP-3654 treatment reduces levels of phospho-BAD in vitro using the bladder cancer cell line UM-UC-3. TP-3654 reduces colony growth of T24 and UM-UC3 cells, confirming the PIM-1–dependent growth for both cell lines.
In Vivo: Oral dosing of 200 mg/kg TP-3654 significantly reduces both UM-UC-3 and PC-3 tumor growth measured by volume (caliper) and by final tumor weight, with no significant changes in body weight or gross adverse toxicity.