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Combined expression of the non-receptor protein tyrosine kinases FAK and Src in primary colorectal cancer is associated with tumor recurrence and metastasis formation.
de Heer, P; Koudijs, M M; van de Velde, C J H; Aalbers, R I J M; Tollenaar, R A E M; Putter, H; Morreau, J; van de Water, B; Kuppen, P J K.
Afiliação
  • de Heer P; Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.
Eur J Surg Oncol ; 34(11): 1253-61, 2008 Nov.
Article em En | MEDLINE | ID: mdl-18556171
PURPOSE: The protein tyrosine kinase focal adhesion kinase (FAK) and Src in association with phosphorylation of the adapter protein paxillin are essential in tumor metastasis formation. Elevated levels of FAK, Src and paxillin may increase the metastatic potential of colorectal tumor cells. The aim of the current study was to examine the expression of FAK, Src, and paxillin using immunohistochemistry in the context of disease progression and to evaluate its clinical significance as a prognostic factor. EXPERIMENTAL DESIGN: The relationship between FAK, Src and paxillin levels and colorectal cancer progression was evaluated by immunohistochemistry in 104 colorectal cancer specimens with clinical follow up. In addition, FAK, Src and paxillin expression levels were quantified in 68 colorectal tumors and corresponding liver metastases. RESULTS: FAK and paxillin expression individually did not significantly impact time to recurrence (p=0.09, and p=0.89 respectively). Src expression was associated with tumor recurrence p=0.03. However, tumors that expressed both high FAK and Src levels had a significant shorter time to recurrence (p=0.004, hazard ratio: 2.98, 95% CI 1.14-6.31). FAK, Src and paxillin showed equivalent levels in corresponding liver metastases compared to the primary tumors (p=0.67, p=0.28 and p=0.34 respectively). CONCLUSIONS: These findings show that high levels of FAK and Src combined were predictive for recurrence of colorectal cancer. In addition, expression of FAK, Src and paxillin in colorectal cancer were maintained in corresponding distant metastases.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Neoplasias Colorretais / Biomarcadores Tumorais / Quinases da Família src / Proteína-Tirosina Quinases de Adesão Focal / Neoplasias Hepáticas / Recidiva Local de Neoplasia Tipo de estudo: Prognostic_studies / Risk_factors_studies Limite: Adolescent / Adult / Child / Child, preschool / Female / Humans / Infant / Male / Middle aged / Newborn Idioma: En Revista: Eur J Surg Oncol Assunto da revista: NEOPLASIAS Ano de publicação: 2008 Tipo de documento: Article País de afiliação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Neoplasias Colorretais / Biomarcadores Tumorais / Quinases da Família src / Proteína-Tirosina Quinases de Adesão Focal / Neoplasias Hepáticas / Recidiva Local de Neoplasia Tipo de estudo: Prognostic_studies / Risk_factors_studies Limite: Adolescent / Adult / Child / Child, preschool / Female / Humans / Infant / Male / Middle aged / Newborn Idioma: En Revista: Eur J Surg Oncol Assunto da revista: NEOPLASIAS Ano de publicação: 2008 Tipo de documento: Article País de afiliação: Holanda