Neuromedin B receptor antagonist suppresses tumor angiogenesis and tumor growth in vitro and in vivo.

School of Dentistry, Pusan National University, Yangsan 626-870, South Korea.
Cancer letters (Impact Factor: 5.02). 08/2011; 312(1):117-27. DOI: 10.1016/j.canlet.2011.08.014
Source: PubMed

ABSTRACT Neuromedin B (NMB), a member of the mammalian bombesin-like peptide family, and its receptor were aberrantly expressed in vascularized solid tumors. Here, the NMB receptor (NMB-R) antagonist PD168368 specifically inhibited both NMB-induced in vivo and in vitro angiogenesis. In addition, PD168368 showed growth inhibitory effects on MDA-MB-231 breast cancer cells by inducing cell cycle arrest and apoptosis. Furthermore, PD168368 effectively suppressed tumor growth in a xenograft model of breast tumor in vivo. Overall, NMB-R antagonist exhibited a significant antitumor activity by simultaneously inhibiting neovascularization and cancer cell growth, thereby suggesting that NMB-R could be a potential therapeutic target for cancer treatment.

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