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Functional role of RBM10 in lung adenocarcinoma proliferation

  • Authors:
    • Xiuna Sun
    • Mengqi Jia
    • Wei Sun
    • Lu Feng
    • Chundong Gu
    • Taihua Wu
  • View Affiliations / Copyright

    Affiliations: Department of Respiratory Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China, Department of Pathology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China, Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
    Copyright: © Sun et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 467-478
    |
    Published online on: November 22, 2018
       https://doi.org/10.3892/ijo.2018.4643
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Abstract

Lung cancer is one of the most common causes of morbidity and mortality among malignant tumors worldwide. The poor prognosis of patients with lung adenocarcinomas is primarily due to its strong ability to invade and metastasize. Recent research has indicated that RNA‑binding protein 10 (RBM10) is mutated in lung adenocarcinoma, and is closely associated with tumor proliferation and apoptosis; however, the precise role of RBM10 in lung adenocarcinoma remains unclear. Our preliminary experiments (unpublished data) revealed that RBM10 expression was upregulated in lung adenocarcinoma cell lines and tissues. In this study, we first detected the protein expression level of RBM10 in lung adenocarcinoma cells and tissues, and we then examined the effects of RBM10 overexpression and downregulation (via small interfering RNA) on the proliferation and apoptosis of stable lung adenocarcinoma cells, along with its possible mechanisms of action. We also used clinical samples of lung adenocarcinomas to verify our results. We found that RBM10 protein was overexpressed in lung adenocarcinoma cells and tissues, and it reduced p53 expression (as detected by immunofluorescence assay and western blot analysis) in A549 cells and inhibited apoptosis (as shown by flow cytometric assay). RBM10 also promoted cell growth and proliferation in vitro and increased cell migration in a cell wound scratch assay. Furthermore, we found that RBM10 activated key proliferative signaling pathways [such as the epidermal growth factor receptor (EGFR), mitogen‑activated protein kinase (MAPK) and phosphoinositide 3‑kinase (PI3K)‑AKT pathways] and inhibited apoptotic pathways. In addition, we demonstrated that a high expression of RBM10 protein in patient tissue samples was associated with a shorter overall survival time and a poor prognosis. On the whole, the findings of this study indicate that RBM10 may function as an oncogene in lung cancer, and may thus prove to be a novel therapeutic target for the prophylaxis and treatment of lung adenocarcinomas.
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Copy and paste a formatted citation
Spandidos Publications style
Sun X, Jia M, Sun W, Feng L, Gu C and Wu T: Functional role of RBM10 in lung adenocarcinoma proliferation. Int J Oncol 54: 467-478, 2019.
APA
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., & Wu, T. (2019). Functional role of RBM10 in lung adenocarcinoma proliferation. International Journal of Oncology, 54, 467-478. https://doi.org/10.3892/ijo.2018.4643
MLA
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., Wu, T."Functional role of RBM10 in lung adenocarcinoma proliferation". International Journal of Oncology 54.2 (2019): 467-478.
Chicago
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., Wu, T."Functional role of RBM10 in lung adenocarcinoma proliferation". International Journal of Oncology 54, no. 2 (2019): 467-478. https://doi.org/10.3892/ijo.2018.4643
Copy and paste a formatted citation
x
Spandidos Publications style
Sun X, Jia M, Sun W, Feng L, Gu C and Wu T: Functional role of RBM10 in lung adenocarcinoma proliferation. Int J Oncol 54: 467-478, 2019.
APA
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., & Wu, T. (2019). Functional role of RBM10 in lung adenocarcinoma proliferation. International Journal of Oncology, 54, 467-478. https://doi.org/10.3892/ijo.2018.4643
MLA
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., Wu, T."Functional role of RBM10 in lung adenocarcinoma proliferation". International Journal of Oncology 54.2 (2019): 467-478.
Chicago
Sun, X., Jia, M., Sun, W., Feng, L., Gu, C., Wu, T."Functional role of RBM10 in lung adenocarcinoma proliferation". International Journal of Oncology 54, no. 2 (2019): 467-478. https://doi.org/10.3892/ijo.2018.4643
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