Deguelin suppresses angiogenesis in human hepatocellular carcinoma by targeting HGF-c-Met pathway.

Deguelin suppresses angiogenesis in human hepatocellular carcinoma by targeting HGF-c-Met pathway.
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Deguelin 通过靶向 HGF-c-Met 通路抑制人肝细胞癌的血管生成。

DOI:
10.18632/oncotarget.22077
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发表时间:
2018-01-02
期刊:
影响因子:
--
通讯作者:
Gao F
Gao F
中科院分区:
其他
文献类型:
--
作者:
Li M;Yu X;Li W;Liu T;Deng G;Liu W;Liu H;Gao F

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血管生成在人肝细胞癌(HCC)的发生发展中起着至关重要的作用。在本研究中,我们发现了一种天然化合物,鱼藤素,具有深刻的抗肝癌血管生成的作用。鱼藤素抑制血管内皮生长因子(VEGF)诱导的人脐静脉内皮细胞(HUVECs)的增殖,迁移,侵袭,和毛细血管样管的形成在体外和减少肿瘤血管生成在体内。我们发现,VEGF受体介导的信号转导级联在HUVECs被鱼藤素抑制。鱼藤素以时间和剂量依赖的方式减少肝癌细胞VEGF的自分泌。此外,鱼藤素抑制HGF诱导的c-Met信号通路的激活。敲低c-Met或抑制c-Met活化会损害HGF介导的VEGF产生。重要的是,我们产生了患者来源的肝细胞癌异种移植物,以评估鱼藤素在体内的治疗效果。综上所述,这些结果表明鱼藤素可以通过抑制血管内皮细胞上的血管生成和减少癌细胞中的促血管生成因子来抑制HCC。
Angiogenesis plays a crucial role in the development of human hepatocellular carcinoma (HCC). In the present study, we found a natural compound, deguelin, has a profound anti-angiogenesis effect on HCC. Deguelin suppressed vascular endothelial growth factor (VEGF)-induced human umbilical vascular endothelial cells (HUVECs) proliferation, migration, invasion, and capillary-like tube formation in vitro and reduced tumor angiogenesis in vivo. We discovered that VEGF receptor-mediated signal transduction cascades in HUVECs were inhibited by deguelin. Deguelin decreased the autocrine of VEGF in HCC cells in a time- and dose-dependent manner. Additionally, deguelin suppressed HGF-induced activation of the c-Met signaling pathway. Knocking down c-Met or inhibition of c-Met activation impaired HGF-mediated VEGF production. Importantly, we produced patient-derived hepatocellular carcinoma xenografts to evaluate the therapeutic effect of deguelin in vivo. Taken together, these results indicate that deguelin could inhibit HCC through suppression of angiogenesis on vascular endothelial cells and reduction of proangiogenic factors in cancer cells.
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