Abstract
BackgroundAngiogenesis plays a critical role during tumor development. c-Met has recently been implicated in the angiogenesis of various tumors, leaving its role in colorectal cancer (CRC) unknown. In this study, we aimed to evaluate the effect of a novel c-Met inhibitor, cabozantinib, on the tumor growth and angiogenesis in a CRC mouse model.Material/MethodsA mouse CRC xenograft model was used to evaluate the effect of cabozantinib on vivo growth of tumors and angiogenesis. The expression of angiogenesis-related factors was evaluated by immunohistochemistry (IHC) and Western blotting. Levels of serum cytokines were detected by ELISA.ResultsCabozantinib effectively reduced tumor size and angiogenesis, and suppressed the expression of vascular endothelial growth factor (VEGF) in tumor tissues, possibly via the inhibition of Sonic Hedgehog (SHH) pathway.ConclusionsThe blockade of c-Met inhibits the tumor growth and angiogenesis via modulating SHH pathway, suggesting a potential strategy in the treatment of CRC.
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