國家衛生研究院 NHRI:Item 3990099045/4901
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    题名: Phosphorylation of focal adhesion kinase at Tyr397 in gastric carcinomas and its clinical significance
    作者: Lai, IR;Chu, PY;Lin, HS;Liou, JY;Jan, YJ;Lee, JC;Shen, TL
    贡献者: Institute of Cellular and Systems Medicine
    摘要: Focal adhesion kinase (FAK) has been implicated in tumorigenesis in various cancers; however, it re-mains unclear how FAK participates in tumor malig-nancy in vivo. This study seeks to understand the role of FAK activation in gastric cancer progression. Using immunohistochemical staining and Western blotting, we found that pY397 FAK, an autophosphorylation site on FAK activation, was abundant in the cancerous tissues of 21 of 59 patients with gastric carcinomas.We attempted to correlate clinicopathological param-eters, including histological types, TNM staging, and cancer recurrence, with the expression of FAK and pY397 FAK in cancerous tissues. Intriguingly, pa-tients with higher levels of pY397 FAK displayed higher incidences of gastric cancer recurrence after surgery and poor 5-year recurrence-free survival. Fur-thermore, multivariate analyses showed that pY397 FAK was an independent predictor of gastric cancer recurrence. As a result, expression of pY397 FAK is a significant prognostic factor for the recurrence of gas-tric cancer. Additionally, in vitro studies showed that overexpression of Y397F, a dominant-negative mutant of FAK, in AGS human gastric carcinoma cells impaired cell migration, invasion, and proliferation compared with cells overexpressing wild-type FAK. Thus, activa-tion of FAK through autophosphorylation at Tyr397 leads to the progression of gastric carcinomas by pro- moting cell migration, invasion, and proliferation. Col-lectively, our results have provided valuable insights for the development of novel diagnoses and thera-peutic targets for gastric cancer treatments.
    日期: 2010-10
    關聯: American Journal of Pathology. 2010 Oct;177(4):1629-1637.
    Link to: http://dx.doi.org/10.2353/ajpath.2010.100172
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0002-9440&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000282496100008
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77957350031
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