SC-535, a Novel Oral Multikinase Inhibitor, Showed Potent Antitumor Activity in Human Melanoma Models

Cellular Physiology and Biochemistry

关键词: SC-535;    BRAF;    CRAF;    G2/M phase cell cycle arrest;    Antiangiogenesis;   

DOI  :  10.1159/000350123

学科分类：分子生物学，细胞生物学和基因

来源: S Karger AG

【 摘 要 】

Background Melanoma is considered as one of the most aggressive and deadliest cancers and current targeted therapies of melanoma often suffer limited efficacy or drug resistance. Discovery of novel multikinase inhibitors as anti-melanoma drug candidates is still needed. Methods In this investigation, we assessed the in vitro and in vivo anti-melanoma activities of SC-535, which is a novel small molecule multikinase inhibitor discovered by us recently. We analyzed inhibitory effects of SC-535 on various melanoma cell lines and human umbilical vascular endothelial cells (HUVEC) in vitro. Tumor xenografts in athymic mice were used to examine the in vivo activity of SC-535. Results SC-535 could efficiently inhibit vascular endothelial growth factor receptor (VEGFR) 1/2/3, B-RAF, and C-RAF kinases. It showed significant antiangiogenic potencies both in vitro and in vivo and considerable anti-proliferative ability against several melanoma cell lines. Oral administration of SC-535 resulted in dose-dependent suppression of tumor growth in WM2664 and C32 xenograft mouse models. Studies of mechanisms of action indicated that SC-535 suppressed the tumor angiogenesis and induced G2/M phase cell cycle arrest in human melanoma cells. SC-535 possesses favorable pharmacokinetic properties. Conclusion All of these results support SC-535 as a potential candidate for clinical studies in patients with melanoma.

【 授权许可】

CC BY-NC-ND