Enhanced immunogenicity and protective efficacy in mice following a Zika DNA vaccine designed by modulation of membrane-anchoring regions and its association to adjuvants

Copyright © 2024 Teixeira, Oliveira, Branco, Alberca, Sousa, Leite, Adan, Duarte, Lins, Sato and Viana..

Zika virus (ZIKV) is a re-emerging pathogen with high morbidity associated to congenital infection. Despite the scientific advances since the last outbreak in the Americas, there are no approved specific treatment or vaccines. As the development of an effective prophylactic approach remains unaddressed, DNA vaccines surge as a powerful and attractive candidate due to the efficacy of sequence optimization in achieving strong immune response. In this study, we developed four DNA vaccine constructs encoding the ZIKV prM/M (pre-membrane/membrane) and E (envelope) proteins in conjunction with molecular adjuvants. The DNA vaccine candidate (called ZK_ΔSTP), where the entire membrane-anchoring regions were completely removed, was far more immunogenic compared to their counterparts. Furthermore, inclusion of the tPA-SP leader sequence led to high expression and secretion of the target vaccine antigens, therefore contributing to adequate B cell stimulation. The ZK_ΔSTP vaccine induced high cellular and humoral response in C57BL/6 adult mice, which included high neutralizing antibody titers and the generation of germinal center B cells. Administration of ZK-ΔSTP incorporating aluminum hydroxide (Alum) adjuvant led to sustained neutralizing response. In consistency with the high and long-term protective response, ZK_ΔSTP+Alum protected adult mice upon viral challenge. Collectively, the ZK_ΔSTP+Alum vaccine formulation advances the understanding of the requirements for a successful and protective vaccine against flaviviruses and is worthy of further translational studies.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:15

Enthalten in:

Frontiers in immunology - 15(2024) vom: 16., Seite 1307546

Sprache:

Englisch

Beteiligte Personen:

Teixeira, Franciane Mouradian Emidio [VerfasserIn]
Oliveira, Luana de Mendonça [VerfasserIn]
Branco, Anna Cláudia Calvielli Castelo [VerfasserIn]
Alberca, Ricardo Wesley [VerfasserIn]
de Sousa, Emanuella Sarmento Alho [VerfasserIn]
Leite, Bruno Henrique de Sousa [VerfasserIn]
Adan, Wenny Camilla Dos Santos [VerfasserIn]
Duarte, Alberto José da Silva [VerfasserIn]
Lins, Roberto Dias [VerfasserIn]
Sato, Maria Notomi [VerfasserIn]
Viana, Isabelle Freire Tabosa [VerfasserIn]

Links:

Volltext

Themen:

34S289N54E
Adjuvants
Adjuvants, Immunologic
Adjuvants, Pharmaceutic
Alum Compounds
Aluminum sulfate
Antibodies, Neutralizing
Antibodies, Viral
DNA vaccine
Envelope protein
Immunogenicity
Journal Article
Membrane-anchoring regions
Protection
Research Support, Non-U.S. Gov't
Vaccines, DNA
Viral Envelope Proteins
Viral Vaccines
Zika virus

Anmerkungen:

Date Completed 19.02.2024

Date Revised 03.04.2024

published: Electronic-eCollection

Citation Status MEDLINE

doi:

10.3389/fimmu.2024.1307546

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368520285