Xueer Zhao, Yueru Zhang, Oscar Trejo-Cerro, Ecem Kaplan, Zhe Li, Femke Albertsboer, Neyla El Hammiri, Filipe Colaço Mariz, Lawrence Banks, Simone Ottonello, Martin Müller
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A safe and potentiated multi-type HPV L2-E7 nanoparticle vaccine with combined prophylactic and therapeutic activity.
Persistent infection with high-risk human papillomavirus (HPV) is widely recognized as the primary cause of cervical and other malignant cancers. There are six licensed prophylactic vaccines available against HPV, but none of them shows any significant therapeutic effect on pre-existing infections or lesions. Thus, a prophylactic vaccine also endowed with therapeutic activity would afford protection regardless of the vaccine recipients HPV-infection status. Here, we describe the refinement and further potentiation of a dual-purpose HPV nanoparticle vaccine (hereafter referred to as cPANHPVAX) relying on eight different HPV L2 peptide epitopes and on the E7 oncoantigens from HPV16 and 18. cPANHPVAX not only induces anti-HPV16 E7 cytotoxic T-cell responses in C57BL/6 mice, but also anti-HPV18 E7 T-cell responses in transgenic mice with the A2.DR1 haplotype. These cytotoxic responses add up to a potent, broad-coverage humoral (HPV-neutralizing) response. cPANHPVAX safety was further improved by deletion of the pRb-binding domains of E7. Our dual-purpose vaccine holds great potential for clinical translation as an immune-treatment capable of targeting active infections as well as established HPV-related malignancies, thus benefiting both uninfected and infected individuals.
NPJ VaccinesImmunology and Microbiology-Immunology
CiteScore
11.90
自引率
4.30%
发文量
146
审稿时长
11 weeks
期刊介绍:
Online-only and open access, npj Vaccines is dedicated to highlighting the most important scientific advances in vaccine research and development.