Molecular and Cellular Biochemistry

, Volume 364, Issue 1–2, pp 165–171 | Cite as

Overexpression of hepatitis B x-interacting protein in HepG2 cells enhances tumor-induced angiogenesis

  • Fengze Wang
  • Hongrong Fei
  • Bing Qi
  • Shutong Yao
  • Zhengyao Chang
Article

Abstract

Hepatocellular carcinoma (HCC) is a common malignancy and a leading cause of cancer death worldwide. Hepatitis B x-interacting protein (HBXIP), a cofactor of survivin, was originally identified by binding with the C-terminus of the HBx and negatively regulated the activity of HBx. In this study, the effect of HBXIP on the hepatoma cells-induced angiogenesis was investigated. Proliferation and migration of human umbilical vein endothelial cells (HUVECs) were detected by MTT and transwell assay, respectively. Tube formation and chick chorioallantoic membrane model were used to observe the angiogenesis. Vascular endothelial growth factor activity was assayed using ELISA kits. Western blotting was performed to examine the protein expression. Our results indicated that overexpression of HBXIP increased HepG2 cell-induced endothelial cells migration, proliferation, and angiogenesis, which may be related to increasing phosphorylation of endothelial NO synthase in HUVECs. These results suggest that HBXIP may play an important role in tumorigenesis by enhancing angiogenesis in HCC.

Keywords

HBXIP Hepatoma cells Angiogenesis HUVECs eNOS 

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Copyright information

© Springer Science+Business Media, LLC. 2011

Authors and Affiliations

  • Fengze Wang
    • 1
  • Hongrong Fei
    • 2
  • Bing Qi
    • 1
  • Shutong Yao
    • 3
  • Zhengyao Chang
    • 1
  1. 1.School of Biological ScienceTaishan Medical UniversityTaianPeople’s Republic of China
  2. 2.School of PharmacyTaishan Medical UniversityTaianChina
  3. 3.School of Basic Medical SciencesTaianChina

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