Investigation Of A Novel Irreversible Pan-Her Inhibitor Combined With Chemotherapy In Bladder Cancer Models.
JOURNAL OF CLINICAL ONCOLOGY(2013)
Abstract
4545 Background: Human Epidermal Receptors (HER) play an important role in bladder cancer (BCa) progression and may mediate chemotherapy resistance. Dacomitinib (Dac) is a novel, potent, irreversible pan-HER inhibitor with activity in several solid tumors, currently in phase III trials in NSCLC. We showed that Dac has single agent anti-tumor activity in human BCa models in vitro and in vivo, inducing apoptosis and G1 arrest. We hypothesized that Dac has additive effects with Gemcitabine (G) and Cisplatin (C) in BCa xenografts. Methods: UM-UC-6 (UC6) or UM-UC-9 (UC9) xenografts were established in age-matched NOD/SCID mice. A week after injection, mice had small tumors, were randomized and treated with i. G 50mg/kg + C 2mg/kg via 3 weekly intra-peritoneal injections (IPI) + daily p.o. buffer for 3 weeks; ii. Dac 6mg/kg p.o. daily for 3 weeks + 3 weekly IPI (saline); iii. GC (same dose/schedule) + Dac starting 1 day after GC (based on cell cycle effect and kinetics); iv. no treatment (control). Mice were mo...
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Key words
bladder cancer models,chemotherapy,inhibitor,pan-her
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