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Carrillo-Beltrán D, Muñoz JP, Guerrero-Vásquez N, Blanco R, León O, de Souza Lino V, Tapia JC, Maldonado E, Dubois-Camacho K, Hermoso MA, Corvalán AH, Calaf GM, Boccardo E, Aguayo F. Human Papillomavirus 16 E7 Promotes EGFR/PI3K/AKT1/NRF2 Signaling Pathway Contributing to PIR/NF-κB Activation in Oral Cancer Cells. Cancers (Basel) 2020; 12:cancers12071904. [PMID: 32679705 PMCID: PMC7409273 DOI: 10.3390/cancers12071904] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 11/16/2022] Open
Abstract
A subset of oral carcinomas is etiologically related to high-risk human papillomavirus (HR-HPV) infection, with HPV16 being the most frequent HR-HPV type found in these carcinomas. The oncogenic role of HR-HPV is strongly dependent on the overexpression of E6 and E7 oncoproteins, which, in turn, induce p53 and pRb degradation, respectively. Additionally, it has been suggested that HR-HPV oncoproteins are involved in the regulation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), inducing cancer progression and metastasis. Previously, we reported that HPV16 E7 oncoprotein promotes Pirin upregulation resulting in increased epithelial–mesenchymal transition (EMT) and cell migration, with Pirin being an oxidative stress sensor and activator of NF-κB. In this study, we demonstrate the mechanism by which HPV16 E7-mediated Pirin overexpression occurs by promoting EGFR/PI3K/AKT1/NRF2 signaling, thus causing PIR/NF-κB activation in oral tumor cells. Our results demonstrate a new mechanism by which E7 contributes to oral cancer progression, proposing PIR as a potential new therapeutic target.
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Affiliation(s)
- Diego Carrillo-Beltrán
- Laboratorio de Oncovirología, Programa de Virología, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (D.C.-B.); (N.G.-V.); (R.B.)
| | - Juan P. Muñoz
- Instituto de Alta Investigación, Universidad de Tarapaca, Arica 1000000, Chile; (J.P.M.); (G.M.C.)
| | - Nahir Guerrero-Vásquez
- Laboratorio de Oncovirología, Programa de Virología, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (D.C.-B.); (N.G.-V.); (R.B.)
| | - Rancés Blanco
- Laboratorio de Oncovirología, Programa de Virología, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (D.C.-B.); (N.G.-V.); (R.B.)
| | - Oscar León
- Departamento de Acuicultura y Recursos Agroalimentarios, Universidad de Los Lagos, Osorno 933, Chile;
| | - Vanesca de Souza Lino
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-900, Brazil;
| | - Julio C. Tapia
- Programa Biología Celular y Molecular, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (J.C.T.); (E.M.)
| | - Edio Maldonado
- Programa Biología Celular y Molecular, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (J.C.T.); (E.M.)
| | - Karen Dubois-Camacho
- Innate Immunity Laboratory, Immunology Program, Instituto de Ciencias biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (K.D.-C.); (M.A.H.)
| | - Marcela A. Hermoso
- Innate Immunity Laboratory, Immunology Program, Instituto de Ciencias biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (K.D.-C.); (M.A.H.)
| | - Alejandro H. Corvalán
- Hematology and Oncology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile;
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Gloria M. Calaf
- Instituto de Alta Investigación, Universidad de Tarapaca, Arica 1000000, Chile; (J.P.M.); (G.M.C.)
- Center for Radiological Research, Columbia University Medical Center, New York, NY 10032, USA
| | - Enrique Boccardo
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-900, Brazil;
- Correspondence: (E.B.); (F.A.)
| | - Francisco Aguayo
- Laboratorio de Oncovirología, Programa de Virología, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Santiago 8380000, Chile; (D.C.-B.); (N.G.-V.); (R.B.)
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
- Correspondence: (E.B.); (F.A.)
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