Volume 208, Issue 1 p. 91-99
Original Paper

ILK over-expression in human colon cancer progression correlates with activation of β-catenin, down-regulation of E-cadherin and activation of the Akt–FKHR pathway

V Bravou

V Bravou

Department of Anatomy, School of Medicine, University of Patras, 26500 Rio Patras, Greece

Search for more papers by this author
G Klironomos

G Klironomos

Department of Anatomy, School of Medicine, University of Patras, 26500 Rio Patras, Greece

Search for more papers by this author
E Papadaki

E Papadaki

Department of Anatomy, School of Medicine, University of Patras, 26500 Rio Patras, Greece

Search for more papers by this author
S Taraviras

S Taraviras

Department of Pharmacology, School of Medicine, University of Patras, 26500 Rio Patras, Greece

Search for more papers by this author
J Varakis

Corresponding Author

J Varakis

Department of Anatomy, School of Medicine, University of Patras, 26500 Rio Patras, Greece

Department of Anatomy, School of Medicine, University of Patras, 26500 Rio Patras, Greece.Search for more papers by this author
First published: 08 November 2005
Citations: 74

Abstract

Integrin-linked kinase (ILK) has been implicated in the development and progression of several human malignancies. However, the role of ILK in human colon cancer progression is not well established, neither have its possible in vivo downstream effectors in the disease been identified. We studied, by immunohistochemistry, ILK, β-catenin, E-cadherin, p-Akt and p-FKHR protein expression in 125 primary colon carcinomas and 45 corresponding lymph node metastases. ILK was expressed in 98.4% of the primary tumours and in 100% of metastatic lesions. The levels of ILK expression correlated strongly with tumour invasion, tumour grade and stage and were significantly higher in metastatic tumours. Activation of β-catenin, down-regulation of E-cadherin and activation of the Akt–FKHR pathway correlated significantly with both ILK expression and tumour progression parameters. In conclusion, our results suggest that ILK may have an important role in progression of human colon cancer, possibly through in vivo regulation of β-catenin, E-cadherin and Akt pathways. Our study also provides some evidence implicating p-FKHR in human colon carcinogenesis and ILK signalling. Copyright © 2005 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.