alexa Integrin-linked kinase cytoplasmic and nuclear expression in laryngeal carcinomas.


Journal of Cancer Science & Therapy

Author(s): Goulioumis AK, Bravou V, Varakis J, Goumas P, Papadaki H

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Abstract Integrin-linked kinase (ILK) has been implicated in the development and progression of several human malignancies. Previous in vitro studies also implicate ILK in the activation of Akt and beta-catenin as well as in the regulation of E-cadherin expression. However, the role of ILK in human laryngeal cancer and its possible in vivo downstream effectors in the disease are currently unknown. We examined by immunohistochemistry the protein expression of ILK, phosphorylated-Akt (p-Akt), E-cadherin, and beta-catenin in 97 invasive squamous laryngeal carcinomas. Increased cytoplasmic and nuclear expression of ILK and p-Akt decreased membranous expression of E-cadherin and nuclear accumulation of beta-catenin was found in 87.6\%, 85.6\%, 71.1\%, and 43.3\% of cases, respectively. Our results suggest that ILK expression may be implicated in human laryngeal carcinoma and its localization in the nucleus possibly proposes novel nuclear functions of this molecule. In addition, enhanced ILK expression correlates with activation of Akt but not with downregulation of E-cadherin and activation of beta-catenin. Finally, in our material while activated Akt seems to characterize well-differentiated tumors, loss of E-cadherin and activation of beta-catenin correlated with high grade carcinomas. This article was published in Virchows Arch and referenced in Journal of Cancer Science & Therapy

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