Epithelial-mesenchymal transition is necessary for acquired resistance to cisplatin and increases the metastatic potential of nasopharyngeal carcinoma cells Corrigendum in /10.3892/ijmm.2025.5591

Zhang,Pei; Liu,Hao; Xia,Fei; Zhang,Qian  Wen; Zhang,Yuan  Yuan; Zhao,Qing; Chao,Zhen  Hua; Jiang,Zhi  Wen; Jiang,Chen  Chen

doi:10.3892/ijmm.2013.1538

2014-January Volume 33 Issue 1

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2014-January Volume 33 Issue 1

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Article

Epithelial-mesenchymal transition is necessary for acquired resistance to cisplatin and increases the metastatic potential of nasopharyngeal carcinoma cells

Corrigendum in: /10.3892/ijmm.2025.5591

Authors:
- Pei Zhang
- Hao Liu
- Fei Xia
- Qian Wen Zhang
- Yuan Yuan Zhang
- Qing Zhao
- Zhen Hua Chao
- Zhi Wen Jiang
- Chen Chen Jiang
View Affiliations / Copyright

Affiliations: Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical Pharmaceuticals, Bengbu, Anhui 233030, P.R. China, Priority Research Center for Cancer Research, University of Newcastle, Newcastle, NSW 2308, Australia
Pages: 151-159
|
Published online on: October 30, 2013

https://doi.org/10.3892/ijmm.2013.1538
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Abstract

Radiotherapy and adjuvant cisplatin (DDP) chemotherapy are standard approaches used in the treatment of nasopharyngeal carcinoma (NPC). However, resistance to chemotherapy has recently become more common, resulting in the failure of this combination therapy for NPC. The aim of the present study was to assess the cellular morphology, motility and molecular changes in DDP-resistant NPC cells in relation to epithelial-mesenchymal transition (EMT). CNE2 cells were continuously exposed to increasing doses of DDP to establish a stable cell line resistant to DDP (CNE2/DDP cells). The human NPC cell lines, HNE1, CNE2, HNE1/DDP and CNE2/DDP, were used to examine the association between chemoresistance and the acquisition of an EMT-like phenotype of cancer cells. The DDP-resistant cells were less sensitive than the HNE1 cells to treatment with DDP, and were shown by a cell viability assay, western blot analysis and qRT-PCR to have acquired chemoresistance. The HNE1/DDP cells examined by wound healing and Transwell Boyden chamber assays exhibited an increased migration and invasion potential. The DDP-resistant cells exhibited morphological and molecular changes consistent with EMT, as observed by western blot analysis and qRT-PCR. These changes included becoming more spindle-like in shape, a loss of polarity and formation of pseudopodia, the downregulation of E-cadherin and β-catenin and the upregulation of vimentin, ﬁbronectin and matrix metalloproteinase (MMP)-9. Moreover, the levels of the EMT-related transcription factors, Snail, Slug, Twist and zinc finger E-box binding homeobox 1 (ZEB1), were higher in the DDP‑resistant NPC cells. These data suggest that the development of DDP resistance of NPC cells is accompanied by inducible EMT-like changes with an increased metastatic potential in vitro. Further elucidation of the association between resistance to DDP and EMT may facilitate the future development of novel therapeutic approaches for the treatment of chemoresistant tumors.

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