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Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis

  • Authors:
    • Xiaojun Huang
    • Chaoqun Wang
    • Jinmin Sun
    • Jun Luo
    • Jiangzhou You
    • Linchuan Liao
    • Mingyuan Li
  • View Affiliations / Copyright

    Affiliations: Department of Microbiology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China, Department of Pathology, Xuzhou Medical College, Xuzhou, Jiangsu 221004, P.R. China
    Copyright: © Huang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 947-955
    |
    Published online on: November 13, 2017
       https://doi.org/10.3892/ol.2017.7394
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Abstract

Gastric cancer (GC) is the fourth most common type of malignant tumor worldwide, and causes the second highest number of cancer‑associated mortalities in 2012. Gastric tumorigenesis is a multistep and multifactorial process. In the present study, tissue microarray and immunohistochemistry analysis were used to detect cytotoxin‑associated gene A (CagA), c‑Met, phosphatidylinositol‑4,5‑bisphosphate 3‑kinase (PI3K) and Beclin‑1 expression in 121 GC tumors and 120 normal gastric tissues. The clinical relevance and prognostic implications of CagA, c‑Met, PI3K and Beclin‑1 expression in GC patients were analyzed. Furthermore, the Cox proportional hazards model was performed to indicate the independent prognostic factors for GC patients, including various clinicopathological parameters and CagA, c‑Met, PI3K and Beclin‑1 expression. The results indicated that CagA‑positive H. pylori infection, c‑Met, PI3K and Beclin‑1 may have major roles in the oncogenesis, invasion and lymph node metastasis of GC. The disease‑free survival rate was negatively associated with the expression of c‑Met and CagA in tissues, and was positively associated with Beclin‑1 expression. Overall survival was also negatively associated with the expression of c‑Met and PI3K, and was positively associated with Beclin‑1 expression. This indicated that c‑Met and Beclin‑1 may be independent and efficient biomarkers for predicting the DFS of patients with GC. Furthermore, in CagA‑positive H. pylori infection‑associated GC, c‑Met expression was significantly upregulated and Beclin‑1 expression was significantly downregulated. CagA‑positive H. pylori infection therefore associated with the c‑Met signaling pathway and the suppression of autophagy in the neoplasia, invasion and metastasis of GC.
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Copy and paste a formatted citation
Spandidos Publications style
Huang X, Wang C, Sun J, Luo J, You J, Liao L and Li M: Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis. Oncol Lett 15: 947-955, 2018.
APA
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., & Li, M. (2018). Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis. Oncology Letters, 15, 947-955. https://doi.org/10.3892/ol.2017.7394
MLA
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., Li, M."Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis". Oncology Letters 15.1 (2018): 947-955.
Chicago
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., Li, M."Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis". Oncology Letters 15, no. 1 (2018): 947-955. https://doi.org/10.3892/ol.2017.7394
Copy and paste a formatted citation
x
Spandidos Publications style
Huang X, Wang C, Sun J, Luo J, You J, Liao L and Li M: Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis. Oncol Lett 15: 947-955, 2018.
APA
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., & Li, M. (2018). Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis. Oncology Letters, 15, 947-955. https://doi.org/10.3892/ol.2017.7394
MLA
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., Li, M."Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis". Oncology Letters 15.1 (2018): 947-955.
Chicago
Huang, X., Wang, C., Sun, J., Luo, J., You, J., Liao, L., Li, M."Clinical value of CagA, c‑Met, PI3K and Beclin‑1 expressed in gastric cancer and their association with prognosis". Oncology Letters 15, no. 1 (2018): 947-955. https://doi.org/10.3892/ol.2017.7394
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