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International Journal of Oncology
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Print ISSN: 1019-6439 Online ISSN: 1791-2423
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International Journal of Molecular Medicine

International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease.

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Experimental and Therapeutic Medicine is an international journal devoted to laboratory and clinical medicine.

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Article

Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer

  • Authors:
    • Shuaiyin Chen
    • Guangcai Duan
    • Rongguang Zhang
    • Qingtang Fan
  • View Affiliations / Copyright

    Affiliations: Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China, Henan Key Laboratory of Molecular Medicine, Zhengzhou, Henan, P.R. China
  • Pages: 764-770
    |
    Published online on: May 19, 2014
       https://doi.org/10.3892/ijo.2014.2444
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Abstract

Persistent infection with Helicobacter pylori confers an increased risk for the development of gastric cancer. In our previous investigations, we found that ENO1 was overexpression in cagA-positive H. pylori-infected gastric epithelial AGS cells by proteomic method, in contrast to the isogenic cagA knock out mutant H. pylori-infected cells. ENO1 is a newly identified oncoprotein overexpressed in some cancer. However, the relationship between H. pylori infection and ENO1 expression still remains undefined. The AGS gastric cancer cells were transfected with WT-cagA plasmid and PR-cagA plasmids. Expression of ENO1 mRNA and protein were measured by real-time quantitative PCR and western blot analysis. Signal protein inhibitor treatment was used to investigate the signal pathways. It was found that the ENO1 mRNA and protein overexpression levels were dependent on cagA gene expression and CagA protein phosphorylation. Further analysis revealed that the Src, MEK and ERK pathway was involved in this upregulation effect. Our data suggest that ENO1 was upregulated by CagA protein through activating the Src and MEK/ERK signal pathways, thereby providing a novel mechanism underlying H. pylori-mediated gastric diseases.
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Copy and paste a formatted citation
Spandidos Publications style
Chen S, Duan G, Zhang R and Fan Q: Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer. Int J Oncol 45: 764-770, 2014.
APA
Chen, S., Duan, G., Zhang, R., & Fan, Q. (2014). Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer. International Journal of Oncology, 45, 764-770. https://doi.org/10.3892/ijo.2014.2444
MLA
Chen, S., Duan, G., Zhang, R., Fan, Q."Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer". International Journal of Oncology 45.2 (2014): 764-770.
Chicago
Chen, S., Duan, G., Zhang, R., Fan, Q."Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer". International Journal of Oncology 45, no. 2 (2014): 764-770. https://doi.org/10.3892/ijo.2014.2444
Copy and paste a formatted citation
x
Spandidos Publications style
Chen S, Duan G, Zhang R and Fan Q: Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer. Int J Oncol 45: 764-770, 2014.
APA
Chen, S., Duan, G., Zhang, R., & Fan, Q. (2014). Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer. International Journal of Oncology, 45, 764-770. https://doi.org/10.3892/ijo.2014.2444
MLA
Chen, S., Duan, G., Zhang, R., Fan, Q."Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer". International Journal of Oncology 45.2 (2014): 764-770.
Chicago
Chen, S., Duan, G., Zhang, R., Fan, Q."Helicobacter pylori cytotoxin-associated gene A protein upregulates α-enolase expression via Src/MEK/ERK pathway: Implication for progression of gastric cancer". International Journal of Oncology 45, no. 2 (2014): 764-770. https://doi.org/10.3892/ijo.2014.2444
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