Breast Cancer Research and Treatment

, Volume 73, Issue 3, pp 237–243

Inhibition of NF-κB Activity Decreases the VEGF mRNA Expression in MDA-MB-231 Breast Cancer Cells

  • Arihiro Shibata
  • Takashi Nagaya
  • Tsuneo Imai
  • Hiroomi Funahashi
  • Akimasa Nakao
  • Hisao Seo
Article

DOI: 10.1023/A:1015872531675

Cite this article as:
Shibata, A., Nagaya, T., Imai, T. et al. Breast Cancer Res Treat (2002) 73: 237. doi:10.1023/A:1015872531675

Abstract

VEGF (vascular endothelial growth factor) secreted from tumor cells including breast cancer serves as a potent angiogenic factor which favors tumor growth and metastasis. Indeed, a higher concentration of serum VEGF has been shown to associate with a poorer prognosis in patients with breast cancer. On the other hand, constitutive expression of a transcription factor, NF-κB was correlated with progression and metastasis in a number of human breast cancers, suggesting a possible regulation of VEGF expression by NF-κB. We thus investigated the relationship between the expression of VEGF and constitutive NF-κB activity in three breast cancer cell lines, MCF-7, T47D, and MDA-MB-231. The basal levels of VEGF mRNA expression correlated with those of nuclear NF-κB activity in these cell lines. The highest NF-κB activity in MDA-MB-231 cells was associated with the highest expression of VEGF mRNA, while the activity and the mRNA levels were moderate in MCF cells and the lowest in T47D cells. In MDA-MB-231 cells, inhibition of NF-κB by adenovirus-mediated expression of a dominant negative NF-κB or by a proteasome inhibitor, MG132, decreased the VEGF mRNA. These results suggest that NF-κB is involved in the upregulation of VEGF mRNA and inhibition of the activity could be a new approach for the treatment of breast cancer by preventing angiogenesis.

adenovirusangiogenesisbreast cancerNF-κBproteasome inhibitorVEGF

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Arihiro Shibata
    • 1
    • 2
  • Takashi Nagaya
    • 1
  • Tsuneo Imai
    • 2
  • Hiroomi Funahashi
    • 2
  • Akimasa Nakao
    • 2
  • Hisao Seo
    • 1
  1. 1.Department of Endocrinology and Metabolism, Division of Molecular and Cellular AdaptationResearch Institute of Environmental MedicineJapan
  2. 2.The Second Department of Surgery, School of MedicineNagoya UniversityNagoyaJapan