Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/29590
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    標題: Increased expression of argininosuccinate synthetase protein predicts poor prognosis in human gastric cancer
    作者: Shan, Yan-Shen
    Hsu, Hui-Ping
    Lai, Ming-Derg
    Yen, Meng-Chi
    Luo, Yi-Pey
    Chen, Yi-Ling
    貢獻者: 生物科技系
    老人服務事業管理系
    關鍵字: gastri ccancer
    recurrence-free survival
    argininosuccinate synthetase
    日期: 2015-01
    上傳時間: 2016-04-19 19:01:17 (UTC+8)
    出版者: Spandidos Publ Ltd
    摘要: Aberrant expression of argininosuccinate synthetase (ASS1, also known as ASS) has been found in cancer cells and is involved in the carcinogenesis of gastric cancer. The aim of the present study was to investigate the level of ASS expression in human gastric cancer and to determine the possible correlations between ASS expression and clinicopathological findings. Immunohistochemistry was performed on paraffin-embedded tissues to determine whether ASS was expressed in 11 of 11 specimens from patients with gastric cancer. The protein was localized primarily to the cytoplasm of cancer cells and normal epithelium. In the Oncomine cancer microarray database, expression of the ASS gene was significantly increased in gastric cancer tissues. To investigate the clinicopathological and prognostic roles of ASS expression, we performed western blot analysis of 35 matched specimens of gastric adenocarcinomas and normal tissue obtained from patients treated at the National Cheng Kung University Hospital. The ratio of relative ASS expression (expressed as the ASS/-actin ratio) in tumor tissues to that in normal tissues was correlated with large tumor size (P=0.007) and with the tumor, node, metastasis (TNM) stage of the American Joint Committee on Cancer staging system (P=0.031). Patients whose cancer had increased the relative expression of ASS were positive for perineural invasion and had poor recurrence-free survival. In summary, ASS expression in gastric cancer was associated with a poor prognosis. Further study of mechanisms to silence the ASS gene or decrease the enzymatic activity of ASS protein has the potential to provide new treatments for patients with gastric cancer.
    關聯: Oncology Reports, v.33 n.1, pp.49-57
    显示于类别:[老人服務事業管理系] 期刊論文
    [生物科技系(所)] 期刊論文

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