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Journal Article
Research Support, Non-U.S. Gov't
Inhibition of transforming growth factor beta receptor I kinase blocks hepatocellular carcinoma growth through neo-angiogenesis regulation.
Hepatology : Official Journal of the American Association for the Study of Liver Diseases 2009 October
UNLABELLED: Curative therapies for patients with hepatocellular carcinoma (HCC) are mainly invasive, and with the exception of sorafenib, no medical treatments are available for advanced or metastatic stages of HCC. We investigated the antitumoral effect of blocking the transforming growth factor beta (TGF-beta) signaling pathway in HCC with LY2109761, a kinase inhibitor of TGF-beta receptor I kinase. The antitumor activity of LY2109761 was associated with inhibition of molecular pathways involved in neo-angiogenesis and tumor growth of HCC. This anti-angiogenic effect is more effective than that of bevacizumab, which specifically targets vascular endothelial growth factor (VEGF). We found that the paracrine cross-talk between HCC and endothelial cells is blocked by LY210976, inhibiting blood vessel formation. This effect was mediated by SMAD2/3 and affected the secretion of VEGF. Finally, LY2109761 does not show significant effects on physiological angiogenetic development.
CONCLUSION: These data support the rationale for targeting TGF-beta signaling in patients with HCC.
CONCLUSION: These data support the rationale for targeting TGF-beta signaling in patients with HCC.
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