CDC25A inhibition suppresses cell proliferation and induces G<sub>1</sub>/S‑phase cell cycle arrest in nasopharyngeal carcinoma

Wang,Bin; Gong,Qiaohong; Chen,Fuhai

doi:10.3892/mmr.2023.12996

May-2023 Volume 27 Issue 5

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May-2023 Volume 27 Issue 5

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Article Open Access

CDC25A inhibition suppresses cell proliferation and induces G₁/S‑phase cell cycle arrest in nasopharyngeal carcinoma

Authors:
- Bin Wang
- Qiaohong Gong
- Fuhai Chen
View Affiliations / Copyright

Affiliations: Department of Otolaryngology‑Head and Neck Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, P.R. China, Department of Preventive Medicine, Hangzhou Obstetrics and Gynecology Hospital, Hangzhou, Zhejiang 310008, P.R. China

Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Article Number: 109
|
Published online on: April 12, 2023

https://doi.org/10.3892/mmr.2023.12996
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Abstract

Nasopharyngeal carcinoma (NPC) is a primary malignancy that originates from the nasopharyngeal region. It has been demonstrated that a decrease in the expression level of cell division cycle gene 25A (CDC25A) suppresses cell viability and induces apoptosis in a variety of different types of cancer. However, at present, the role of CDC25A in NPC has yet to be fully elucidated. Therefore, the aim of the present study was to investigate the role of CDC25A in NPC progression and to explore the potential underlying mechanism. Reverse transcription‑quantitative PCR was performed to detect the relative mRNA levels of CDC25A and E2F transcription factor 1 (E2F1). Western blot analysis was subsequently used to determine the expression levels of CDC25A, Ki67, proliferating cell nuclear antigen (PCNA) and E2F1. CCK8 assay was employed to measure cell viability and flow cytometric analysis was employed to analyze the cell cycle. The binding sites between the CDC25A promoter and E2F1 were predicted using bioinformatics tools. Finally, luciferase reporter gene and chromatin immunoprecipitation assays were performed to verify the interaction between CDC25A and E2F1. The results obtained suggested that CDC25A is highly expressed in NPC cell lines and CDC25A silencing was found to inhibit cell proliferation, reduce the protein expression levels of Ki67 and PCNA and induce G1 arrest of NPC cells. Furthermore, E2F1 could bind CDC25A and positively regulate its expression at the transcriptional level. In addition, CDC25A silencing abolished the effects of E2F1 overexpression on cell proliferation and the cell cycle in NPC. Taken together, the findings of the present study showed that CDC25A silencing attenuated cell proliferation and induced cell cycle arrest in NPC and CDC25A was regulated by E2F1. Hence, CDC25A may be a promising therapeutic target for treatment of NPC.

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