Overexpression of ADP-ribosylation factor 1 in human gastric carcinoma and its clinicopathological significance

Ming Chieh Tsai, Paul Yann Lin, Wan Li Cheng, Chung Ying Tsai, Hsiang Cheng Chi, Cheng Yi Chen, Yi Hsin Tseng, Yi Fen Cheng, Dz Chi Chen, Ying Liang, Chia Jung Liao, Sheng Ming Wu, Yang Hsiang Lin, I. Hsiao Chung, Chia Siu Wang, Kwang Huei Lin

研究成果: 雜誌貢獻文章同行評審

22 引文 斯高帕斯(Scopus)

摘要

Gastric cancer is the sixth leading cause of cancer-related death in Taiwan, and the identification of related factors is essential to increase patient survival. ADP-ribosylation factor 1 (ARF1) was initially identified using 2-D electrophoresis combined with MALDI-time-of-flight mass spectrometry. ADP-ribosylation factor 1 belongs to the Ras superfamily or GTP-binding protein family and has been shown to enhance cell proliferation. In the current study, we evaluated the potential of ARF1 as a biomarker for gastric cancer detection. ADP-ribosylation factor 1 mRNA was upregulated in tumor tissues (compared with adjacent non-tumor tissues, n = 55) in approximately 67.2% of gastric cancer patients. Expression of ARF1 protein was additionally observed using Western blot and immunohistochemistry (IHC) analyses. The clinicopathological correlations of ARF1 were further evaluated. Elevated ARF1 expression was strongly correlated with lymph node metastasis (P = 0.008), serosal invasion (P = 0.046), lymphatic invasion (P = 0.035), and pathological staging (P = 0.010). Moreover, the 5-year survival rate for the lower ARF1 expression group (n = 50; IHC score < 90) was higher than that of the higher expression group (n = 60; IHC score ≥ 90) (P = 0.0228, log-rank test). To establish the specific function of ARF1 in human gastric cancer, isogenic ARF1-overexpressing cell lines were prepared. Our results showed that ARF1-overexpressing clones display enhanced cell proliferation, migration, and invasion. Furthermore, ARF1-overexpression might contribute to poor prognosis of patients. These findings collectively support the utility of ARF1 as a novel prognostic marker for gastric cancer and its role in cell invasion.
原文英語
頁(從 - 到)1136-1144
頁數9
期刊Cancer Science
103
發行號6
DOIs
出版狀態已發佈 - 6月 2012
對外發佈

ASJC Scopus subject areas

  • 癌症研究
  • 腫瘤科

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