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Article

EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells

  • Authors:
    • Tomoya Takeda
    • Masanobu Tsubaki
    • Takuya Matsuda
    • Akihiro Kimura
    • Minami Jinushi
    • Teruki Obana
    • Manabu Takegami
    • Shozo Nishida
  • View Affiliations / Copyright

    Affiliations: Department of Pharmacotherapy, Kindai University School of Pharmacy, Higashiosaka, Osaka 577‑8502, Japan, Department of Pharmacy, Kindai University Hospital, Osakasayama, Osaka 589‑8511, Japan
  • Article Number: 109
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    Published online on: April 21, 2022
       https://doi.org/10.3892/or.2022.8320
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Abstract

Tamoxifen resistance remains a major obstacle in the treatment of estrogen receptor (ER)‑positive breast cancer. In recent years, the crucial role of the epithelial‑mesenchymal transition (EMT) process in the development of drug resistance in breast cancer has been underlined. However, the central molecules inducing the EMT process during the development of tamoxifen resistance remain to be elucidated. In the present study, it was demonstrated that tamoxifen‑resistant breast cancer cells underwent EMT and exhibited an enhanced cell motility and invasive behavior. The inhibition of snail family transcriptional repressor 1 (Snail) and twist family BHLH transcription factor 1 (Twist) reversed the EMT phenotype and decreased the tamoxifen resistance, migration and invasion of tamoxifen‑resistant breast cancer cells. In addition, it was observed that the inhibition of epidermal growth factor receptor (EGFR) reversed the EMT phenotype in tamoxifen‑resistant MCF7 (MCF‑7/TR) cells via the downregulation of Snail and Twist. Notably, the EGFR inhibitor, gefitinib, decreased tamoxifen resistance, migration and invasion through the inhibition of Snail and Twist. On the whole, the results of the present study suggest that EGFR may be a promising therapeutic target for tamoxifen‑resistant breast cancer. Moreover, it was suggested that gefitinib may serve as a potent novel therapeutic strategy for breast cancer patients, who have developed tamoxifen resistance.
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Takeda T, Tsubaki M, Matsuda T, Kimura A, Jinushi M, Obana T, Takegami M and Nishida S: EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells. Oncol Rep 47: 109, 2022.
APA
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T. ... Nishida, S. (2022). EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells. Oncology Reports, 47, 109. https://doi.org/10.3892/or.2022.8320
MLA
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T., Takegami, M., Nishida, S."EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells". Oncology Reports 47.6 (2022): 109.
Chicago
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T., Takegami, M., Nishida, S."EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells". Oncology Reports 47, no. 6 (2022): 109. https://doi.org/10.3892/or.2022.8320
Copy and paste a formatted citation
x
Spandidos Publications style
Takeda T, Tsubaki M, Matsuda T, Kimura A, Jinushi M, Obana T, Takegami M and Nishida S: EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells. Oncol Rep 47: 109, 2022.
APA
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T. ... Nishida, S. (2022). EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells. Oncology Reports, 47, 109. https://doi.org/10.3892/or.2022.8320
MLA
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T., Takegami, M., Nishida, S."EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells". Oncology Reports 47.6 (2022): 109.
Chicago
Takeda, T., Tsubaki, M., Matsuda, T., Kimura, A., Jinushi, M., Obana, T., Takegami, M., Nishida, S."EGFR inhibition reverses epithelial‑mesenchymal transition, and decreases tamoxifen resistance via Snail and Twist downregulation in breast cancer cells". Oncology Reports 47, no. 6 (2022): 109. https://doi.org/10.3892/or.2022.8320
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