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  • program_project
  • nrc
  • whocc
  • project
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  • tool
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  • Assistant Professor
  • Associate Professor
  • Clinical Research Assistant
  • Clinical Research Nurse
  • Clinician Researcher
  • Department Manager
  • Dual-education Student
  • Full Professor
  • Honorary Professor
  • Lab assistant
  • Master Student
  • MD-PhD Student
  • Medical Staff
  • Non-permanent Researcher
  • Nursing Staff
  • Permanent Researcher
  • Pharmacist
  • PhD Student
  • Physician
  • Post-doc
  • Prize
  • Project Manager
  • Research Associate
  • Research Engineer
  • Retired scientist
  • Technician
  • Undergraduate Student
  • Veterinary
  • Visiting Scientist
  • Deputy Director of Center
  • Deputy Director of Department
  • Deputy Director of National Reference Center
  • Deputy Head of Facility
  • Director of Center
  • Director of Department
  • Director of Institute
  • Director of National Reference Center
  • Group Leader
  • Head of Facility
  • Head of Operations
  • Head of Structure
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Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Vaccine - 30 Aug 2025

Pierre Authié, Philippe Souque, Fanny Moncoq, Amandine Noirat, Catherine Blanc, Sylvain Ciret, Maryline Bourgine, David Hardy, Françoise Guinet, Laleh Majlessi, Pierre Charneau, Kirill Nemirov

Link to Pubmed [PMID] – 40753671

Link to DOI – 10.1016/j.vaccine.2025.127563

Abstract

Zika and yellow fever flaviviruses induce important human diseases, mainly in tropical regions. Zika virus is an emerging pathogen that has recently spread to new geographic areas, while yellow fever virus, effectively controlled in the past, has recently re-emerged and caused outbreaks in endemic regions. Since antibody-based vaccines could potentially increase the severity of infections by the related Zika and dengue viruses via antibody-dependent enhancement, new vaccine approaches need to be explored. Here, we described lentiviral vectors that express antigens based on T-cell epitope-containing regions of Zika and yellow fever viruses and evaluated the immunogenicity and protective efficacy induced by these vectors in an ifnar−/− mouse model. These vectors induced T-cell responses in the absence of infection-enhancing antibodies and demonstrated significant protection against the two pathogens, associated with reduced viremia and viral load in organs, as well as protection against weight loss and organ pathology.

Keywords

Zika, Yellow fever, Flavivirus, Lentiviral vector, Ifnar−/− mice, T-cell vaccine, CD8+ T cells