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Article Open Access

Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer

  • Authors:
    • Jo‑Mei Maureen Chen
    • Shao‑Chih Chiu
    • Kun‑Chieh Chen
    • Yun‑Ru Jaoying Huang
    • Yu‑Ting Amber Liao
    • Chang‑Tze Ricky Yu
  • View Affiliations / Copyright

    Affiliations: Department of Applied Chemistry, National Chi Nan University, Puli, Nantou 54561, Taiwan, R.O.C., Center for Neuropsychiatry, China Medical University Hospital, Taichung 40447, Taiwan, R.O.C., Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan, R.O.C.
    Copyright: © Chen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3189-3196
    |
    Published online on: March 3, 2020
       https://doi.org/10.3892/ol.2020.11427
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Abstract

Enolase transforms 2‑phospho‑D‑glycerate into phosphoenolpyruvate during glycolysis. The human enolase (ENO) family comprises three members named ENO3, which is restricted to muscle tissues, ENO2, which is neuron‑ and neuroendocrine tissue‑specific, and ENO1, which is expressed in almost all tissues. ENO1 is involved in various types of human cancer, including retinoblastoma, hepatocellular carcinoma, pancreatic cancer, renal cell carcinoma, cholangiocarcinoma and gastric cancer. Furthermore, ENO1 enhances cell transformation in numerous cancer cell lines. It has been reported that ENO1 is involved in various activities that are detrimental to cell transformation, including apoptosis and differentiation. However, a few studies demonstrated that ENO1 can be down‑ or upregulated in various types of lung cancer, which suggests that ENO1 has an ambiguous role in the development of lung cancer. The present study aimed to investigate the differential influences of ENO1 on various types of cancer, and to clarify the role of ENO1 in lung cancer in particular. Western blotting was performed to assess ENO1 protein expression levels in lung cancer and esophageal cancer tissues. Furthermore, exogenous ENO1 was overexpressed in cell lines derived from various tissues and single cell proliferation, flowcytometric analysis, and western blotting were performed to determine the cell proliferation rate, cell transformation status, cell cycle progression and the expression of cell cycle regulators, such as cyclins and cyclin‑dependent kinases, and survival factors, such as MAPK and AKT. The results demonstrated that ENO1 was upregulated in collected panels of lung cancer tissues, but not in esophageal cancer tissues. In addition, overexpression of ectopic ENO1 promoted cell proliferation and survival in lung cancer cell lines, which was not the case in other cells, including an esophageal cell line. Furthermore, mechanistic analyses revealed that ENO1 enhanced cell proliferation by accelerating G1 progression and upregulating G1 phase cyclin‑dependent kinase 6 (CDK6), and improved cell survival by upregulating p38 in the MAPK cascade and increasing p‑AKT in the AKT cascade, in particular in lung cancer cell lines. Overall, the results from the present study demonstrated that ENO1 may contribute to the development of lung cancers, but not esophageal cancers.
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Copy and paste a formatted citation
Spandidos Publications style
Chen JMM, Chiu SC, Chen KC, Huang YRJ, Liao YTA and Yu CTR: Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer. Oncol Lett 19: 3189-3196, 2020.
APA
Chen, J.M., Chiu, S., Chen, K., Huang, Y.J., Liao, Y.A., & Yu, C.R. (2020). Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer. Oncology Letters, 19, 3189-3196. https://doi.org/10.3892/ol.2020.11427
MLA
Chen, J. M., Chiu, S., Chen, K., Huang, Y. J., Liao, Y. A., Yu, C. R."Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer". Oncology Letters 19.4 (2020): 3189-3196.
Chicago
Chen, J. M., Chiu, S., Chen, K., Huang, Y. J., Liao, Y. A., Yu, C. R."Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer". Oncology Letters 19, no. 4 (2020): 3189-3196. https://doi.org/10.3892/ol.2020.11427
Copy and paste a formatted citation
x
Spandidos Publications style
Chen JMM, Chiu SC, Chen KC, Huang YRJ, Liao YTA and Yu CTR: Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer. Oncol Lett 19: 3189-3196, 2020.
APA
Chen, J.M., Chiu, S., Chen, K., Huang, Y.J., Liao, Y.A., & Yu, C.R. (2020). Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer. Oncology Letters, 19, 3189-3196. https://doi.org/10.3892/ol.2020.11427
MLA
Chen, J. M., Chiu, S., Chen, K., Huang, Y. J., Liao, Y. A., Yu, C. R."Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer". Oncology Letters 19.4 (2020): 3189-3196.
Chicago
Chen, J. M., Chiu, S., Chen, K., Huang, Y. J., Liao, Y. A., Yu, C. R."Enolase 1 differentially contributes to cell transformation in lung cancer but not in esophageal cancer". Oncology Letters 19, no. 4 (2020): 3189-3196. https://doi.org/10.3892/ol.2020.11427
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