School of Medicine Publications and Presentations
Document Type
Article
Publication Date
2-12-2021
Abstract
Human papillomaviruses (HPVs) are responsible for about 25% of cancer cases worldwide. HPV-16 E7 antigen is a tumor-associated antigen (TAA) commonly expressed in HPV-induced tumors; however, it has low immunogenicity. The interaction of 4-1BBL with its receptor induces pleiotropic effects on innate, adaptive, and regulatory immunity and, if fused to TAAs in DNA vaccines, can improve the antitumor response; however, there is low transfection and antitumor efficiency. Oncolytic virotherapy is promising for antitumor gene therapy as it can be selectively replicated in tumor cells, inducing cell lysis, and furthermore, tumor cell debris can be taken in by immune cells to potentiate antitumor responses. In this study, we expressed the immunomodulatory molecule SA-4-1BBL fused to E7 on an oncolytic adenovirus (OAd) system. In vitro infection of TC-1 tumor cells and NIH-3T3 non-tumor cells with SA/E7/4-1BBL OAd demonstrated that only tumor cells are selectively destroyed. Moreover, protein expression is targeted to the endoplasmic reticulum in both cell lines when a signal peptide (SP) is added. Finally, in an HPV-induced cancer murine model, the therapeutic oncolytic activity of OAd can be detected, and this can be improved when fused to E7 and SP.
Recommended Citation
Martinez-Perez, A. G., Perez-Trujillo, J. J., Garza-Morales, R., Ramirez-Avila, N. E., Loera-Arias, M. J., Gomez-Gutierrez, J. G., Saucedo-Cardenas, O., Garcia-Garcia, A., Rodriguez-Rocha, H., & Montes-de-Oca-Luna, R. (2021). An Oncolytic Adenovirus Encoding SA-4-1BBL Adjuvant Fused to HPV-16 E7 Antigen Produces a Specific Antitumor Effect in a Cancer Mouse Model. Vaccines, 9(2), 149. https://doi.org/10.3390/vaccines9020149
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Vaccines
DOI
10.3390/vaccines9020149
Academic Level
resident
Mentor/PI Department
Internal Medicine
Comments
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).