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June 2013 Volume 29 Issue 6

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International Journal of Molecular Medicine

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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International Journal of Oncology is an international journal devoted to oncology research and cancer treatment.

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Covers molecular medicine topics such as pharmacology, pathology, genetics, neuroscience, infectious diseases, molecular cardiology, and molecular surgery.

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Oncology Reports is an international journal devoted to fundamental and applied research in Oncology.

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

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Oncology Letters is an international journal devoted to Experimental and Clinical Oncology.

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Open-access journal combining biochemistry, pharmacology, immunology, and genetics to advance health through functional nutrition.

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Article

Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway

  • Authors:
    • Ke-Kang Sun
    • Ning Zhong
    • Yang Yang
    • Lin Zhao
    • Yang Jiao
  • View Affiliations / Copyright

    Affiliations: Department of Gastrointestinal Surgery Division of Thoracic Surgery, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, P.R. China, Key Laboratory of Radiation Biology, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
  • Pages: 2385-2391
    |
    Published online on: April 12, 2013
       https://doi.org/10.3892/or.2013.2403
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Abstract

Transducer of erbB2.1 (TOB1) is a member of the B-cell translocation gene (BTG)/transducer of erbB2 (TOB) anti‑proliferative protein family. Previous studies have demonstrated that overexpression of TOB1 significantly enhances the radiosensitivity of breast and cervical cancer cells. However, the potential mechanisms of TOB1 are still debated. In the present study, we evaluated the effects of infrared (IR) radiation on TOB1 expression in the human lung cancer cell lines NCI-H1975 and A549 via western blot analysis. NCI-H1975 cells were transfected with TOB1 recombinant plasmid, and A549 cells were treated with TOB1-small interfering RNA (siRNA) to establish gain-of-function and loss-of‑function cell models. The effects of radiation and TOB1 overexpression and silencing on clonogenic survival, cell cycle distribution and DNA repair were assessed. Western blot analysis was performed to determine the related mechanisms. The expression levels of TOB1 were significantly induced by IR radiation. Overexpression of TOB1 abrogated radiation-induced G2/M arrest, reduced clonogenic cell survival and enhanced γ-H2AX foci in NCI-H1975 cells exposed to irradiation. TOB1-siRNA demonstrated opposite effects in A549 cells. TOB1 regulated the activation of mitogen-activated protein kinase (MAPK) and modulated the phosphorylation of p53 via activation of the MAPK/extracellular signal-regulated kinase (ERK) pathway. The findings suggest that TOB1 may be a novel molecular target of irradiation. TOB1 modulated the radiosensitivity of lung cancer cells via the MAPK/ERK signaling pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Sun K, Zhong N, Yang Y, Zhao L and Jiao Y: Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway. Oncol Rep 29: 2385-2391, 2013.
APA
Sun, K., Zhong, N., Yang, Y., Zhao, L., & Jiao, Y. (2013). Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway. Oncology Reports, 29, 2385-2391. https://doi.org/10.3892/or.2013.2403
MLA
Sun, K., Zhong, N., Yang, Y., Zhao, L., Jiao, Y."Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway". Oncology Reports 29.6 (2013): 2385-2391.
Chicago
Sun, K., Zhong, N., Yang, Y., Zhao, L., Jiao, Y."Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway". Oncology Reports 29, no. 6 (2013): 2385-2391. https://doi.org/10.3892/or.2013.2403
Copy and paste a formatted citation
x
Spandidos Publications style
Sun K, Zhong N, Yang Y, Zhao L and Jiao Y: Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway. Oncol Rep 29: 2385-2391, 2013.
APA
Sun, K., Zhong, N., Yang, Y., Zhao, L., & Jiao, Y. (2013). Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway. Oncology Reports, 29, 2385-2391. https://doi.org/10.3892/or.2013.2403
MLA
Sun, K., Zhong, N., Yang, Y., Zhao, L., Jiao, Y."Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway". Oncology Reports 29.6 (2013): 2385-2391.
Chicago
Sun, K., Zhong, N., Yang, Y., Zhao, L., Jiao, Y."Enhanced radiosensitivity of NSCLC cells by transducer of erbB2.1 (TOB1) through modulation of the MAPK/ERK pathway". Oncology Reports 29, no. 6 (2013): 2385-2391. https://doi.org/10.3892/or.2013.2403
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