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Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells

  • Authors:
    • Tingting Huang
    • Xiaoxiao Luo
    • Bili Wu
    • Ping Peng
    • Yuhong Dai
    • Guangyuan Hu
    • Hong Qiu
    • Xianglin Yuan
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
    Copyright: © Huang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2634-2644
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    Published online on: October 21, 2020
       https://doi.org/10.3892/or.2020.7820
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Abstract

The overexpression or amplification of HER2 has been observed in a significant proportion of both gastric cancer (GC) and breast cancer (BC) cases. Pyrotinib is an irreversible dual (EGFR/HER2) tyrosine kinase inhibitor (TKI), newly evaluated for the treatment of HER2‑overexpressing cancer types. As radiotherapy (RT) serves a crucial role in controlling the local recurrence of GC and BC, the present study investigated the impact of pyrotinib on the irradiation response. The current results demonstrated that pyrotinib enhanced the radiosensitivity of HER2‑overexpressing GC and BC cells in vitro and in vivo. In both NCI‑N87 and SKBR3 cells, pyrotinib suppressed the irradiation‑induced HER2 nuclear transport. Furthermore, pyrotinib increased DNA damage induced by irradiation in both cancer cell lines. Pyrotinib also enhanced the cytotoxicity of docetaxel, which may provide a novel strategy for potential drug combinations. Thus, pyrotinib is a promising irradiation sensitizer in patients with HER2‑overexpressing GC and BC. The present results provide a theoretical foundation for further clinical evaluation of pyrotinib.
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Copy and paste a formatted citation
Spandidos Publications style
Huang T, Luo X, Wu B, Peng P, Dai Y, Hu G, Qiu H and Yuan X: Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells. Oncol Rep 44: 2634-2644, 2020.
APA
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G. ... Yuan, X. (2020). Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells. Oncology Reports, 44, 2634-2644. https://doi.org/10.3892/or.2020.7820
MLA
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G., Qiu, H., Yuan, X."Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells". Oncology Reports 44.6 (2020): 2634-2644.
Chicago
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G., Qiu, H., Yuan, X."Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells". Oncology Reports 44, no. 6 (2020): 2634-2644. https://doi.org/10.3892/or.2020.7820
Copy and paste a formatted citation
x
Spandidos Publications style
Huang T, Luo X, Wu B, Peng P, Dai Y, Hu G, Qiu H and Yuan X: Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells. Oncol Rep 44: 2634-2644, 2020.
APA
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G. ... Yuan, X. (2020). Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells. Oncology Reports, 44, 2634-2644. https://doi.org/10.3892/or.2020.7820
MLA
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G., Qiu, H., Yuan, X."Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells". Oncology Reports 44.6 (2020): 2634-2644.
Chicago
Huang, T., Luo, X., Wu, B., Peng, P., Dai, Y., Hu, G., Qiu, H., Yuan, X."Pyrotinib enhances the radiosensitivity of HER2‑overexpressing gastric and breast cancer cells". Oncology Reports 44, no. 6 (2020): 2634-2644. https://doi.org/10.3892/or.2020.7820
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