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RETRACTED ARTICLE: Adenovirus type 12 E1B 55-kilodalton oncoprotein promotes p53-mediated apoptotic response of ovarian cancer to cisplatin

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Tumor Biology

21 December 2021 This article has been retracted. Please see the retraction notice for more detail: https://doi.org/10.3233/TUB-219010 "

Abstract

The tumor suppressor p53-mediated apoptotic response plays an important role in cisplatin resistant in ovarian cancer. The adenovirus (Ad) type 12 E1B 55-kDa protein binds to p53 and inactivates its transcriptional transactivation function. In this study, we test the hypothesis that Ad12 E1B 55-kDa oncoprotein promotes p53-mediated apoptotic response of ovarian cancer to cisplatin. First, we observed the upregulation protein level of p53 target genes in cisplatin-resistant or cisplatin-sensitive ovarian cancer by Western blotting. Second, after transfection of Ad12 E1b 55-kDa expression plasmid, the expressions of p53 target genes in A2780 cells were further enhanced. Co-IP experiment demonstrated Ad12 E1b 55 kDa associated with p53. MTT assay confirmed that the cell proliferation was enhanced after transfection, as well as the enhanced cell inhibitory rate in the presence of cisplatin. Using flow cytometry, transfection of Ad12 E1B 55-kDa protein induced apoptosis and promoted S-phase transition in proliferation. Finally, results showed that all these changes promoted by Ad12 E1b 55 kDa were attenuated by the exposure of specific inhibitor of p53 signaling, pifithrin-α. Taken together, we concluded that Ad E1B 55-kDa oncoprotein promotes p53-mediated apoptotic response of ovarian cancer to cisplatin.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 81202059). The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. We thank Professor Liao for he provided the adenovirus type 12 E1B 55-kDa plasmid to us and supported our research. He works in the Department of Anatomy and Cell Biology, University of Florida College of Medicine, PO Box 100235, 1600 SW Archer Road, Gainesville, Florida 32610–0235. Phone: (352) 273–8188, Fax: (352) 392–3305. Email: dliao@ufl.edu

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, The People’s Republic of China

    Junnai Wang, Qinglei Gao & Qiang Li

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  1. Junnai Wang
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  2. Qinglei Gao
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  3. Qiang Li
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Correspondence to Qiang Li.

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This article has been retracted. Please see the retraction notice for more detail: https://doi.org/10.3233/TUB-219010"

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Wang, J., Gao, Q. & Li, Q. RETRACTED ARTICLE: Adenovirus type 12 E1B 55-kilodalton oncoprotein promotes p53-mediated apoptotic response of ovarian cancer to cisplatin. Tumor Biol. 36, 6569–6577 (2015). https://doi.org/10.1007/s13277-015-3351-0

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  • DOI: https://doi.org/10.1007/s13277-015-3351-0

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