Integrin-linked kinase has a critical role in ErbB2 mammary tumor progression: Implications for human breast cancer

S. M. Pontier, L. Huck, D. E. White, J. Rayment, V. Sanguin-Gendreau, B. Hennessy, D. Zuo, R. St-Arnaud, G. B. Mills, S. Dedhar, C. J. Marshall, W. J. Muller

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Elevated expression of the integrin-linked kinase (ILK) has been observed in a variety of cancers and has been further correlated with poor clinical outcome. Here, we show that mammary epithelial disruption of ILK results in a profound block in mammary tumor induction. Consistent with these observations, inhibition of ILK function in ErbB2-expressing cells with small molecule inhibitor or RNA interference resulted in profound block in their in vitro invasive properties due to the induction of apoptotic cell death. The rare ILK-deficient tumors that eventually arose overcame this block in tumor induction by an upregulation of ErB3 phosphorylation. These observations provide direct evidence that ILK has a critical role in the initiation phase of ErbB2 tumor induction.

Original languageEnglish (US)
Pages (from-to)3374-3385
Number of pages12
JournalOncogene
Volume29
Issue number23
DOIs
StatePublished - Jun 10 2010
Externally publishedYes

Keywords

  • ErbB2
  • Integrin-linked kinase
  • Mammary tumorigenesis

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research

Fingerprint

Dive into the research topics of 'Integrin-linked kinase has a critical role in ErbB2 mammary tumor progression: Implications for human breast cancer'. Together they form a unique fingerprint.

Cite this