Focal adhesion kinase serves as a marker of cervical lymph node metastasis and is a potential therapeutic target in tongue cancer.

Journal of Cancer Research and Clinical Oncology
Hongbing JiangYunong Wu

Abstract

The aims of the present study were to examine whether focal adhesion kinase (FAK) expression is correlated with cervical lymph node metastasis of tongue cancer and to investigate the roles of FAK in the process of cancer cell migration, invasion and anoikis resistance using the human tongue cancer cell line, Tca8113. FAK expression was evaluated in 5 normal oral mucosa, 10 premalignant lesions, 80 primary tongue cancers and 41 lymph node metastases using anti-FAK immunohistochemistry. The migration, invasion and anoikis resistance of tongue cancer cells were evaluated using wound healing assays, invasion assays and anoikis induction. The effect of FAK inhibition was evaluated using RNA interference (RNAi). In total, 55 of 80 primary tongue cancers (69%) showed high expression of FAK, and 25 of 80 tumors (31%) and all normal oral mucosa or premalignant lesions showed low expression of FAK. There was a significant correlation between FAK expression and the cervical lymph node metastasis of tongue cancer. Moreover, RNAi-mediated FAK reduction decreased tongue cancer cell migration, invasion and anoikis resistance. These results suggest that FAK may serve as a marker of cervical lymph node metastasis of tongue cancer and that RNAi ...Continue Reading

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Dec 11, 2013·Nucleic Acids Research·Chien-Hua PengWen-Ping Hsieh
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