Lysyl oxidase secreted by tumour endothelial cells promotes angiogenesis and metastasis

T. Osawa, N. Ohga, K. Akiyama, Y. Hida, K. Kitayama, T. Kawamoto, K. Yamamoto, N. Maishi, M. Kondoh, Y. Onodera, M. Fujie, N. Shinohara, K. Nonomura, M. Shindoh, K. Hida

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

Background:Molecules that are highly expressed in tumour endothelial cells (TECs) may be candidates for specifically targeting TECs. Using DNA microarray analysis, we found that the lysyl oxidase (LOX) gene was upregulated in TECs compared with its expression in normal endothelial cells (NECs). LOX is an enzyme that enhances invasion and metastasis of tumour cells. However, there are no reports on the function of LOX in isolated TECs.Methods:TECs and NECs were isolated to investigate LOX function in TECs. LOX inhibition of in vivo tumour growth was also assessed using β-aminopropionitrile (BAPN).Results:LOX expression was higher in TECs than in NECs. LOX knockdown inhibited cell migration and tube formation by TECs, which was associated with decreased phosphorylation of focal adhesion kinase (Tyr 397). Immunostaining showed high LOX expression in human tumour vessels in vivo. Tumour angiogenesis and micrometastasis were inhibited by BAPN in an in vivo tumour model.Conclusion:LOX may be a TEC marker and a possible therapeutic target for novel antiangiogenic therapy.

Original languageEnglish
Pages (from-to)2237-2247
Number of pages11
JournalBritish Journal of Cancer
Volume109
Issue number8
DOIs
Publication statusPublished - 15-10-2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Fingerprint

Dive into the research topics of 'Lysyl oxidase secreted by tumour endothelial cells promotes angiogenesis and metastasis'. Together they form a unique fingerprint.

Cite this