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Deconstructing the protective immunity of yellow fever virus 17D to inform flavivirus vaccine design

Project description

Unlocking vaccine secrets to combat flavivirus threats

Flaviviruses such as Zika, dengue, and yellow fever, once confined to tropical regions, are re-emerging as global health threats, with Europe now experiencing locally detected cases. Climate change and urbanisation have spread their mosquito vectors, exacerbating the problem. Despite the success of the yellow fever 17D (YF17D) vaccine, its mechanism of inducing immunity remains unclear. The EU-funded Yellow4FLAVI project aims to bridge this knowledge gap, using advanced technologies to study the YF17D vaccine’s effects from molecular to population levels. By understanding how this vaccine works, the consortium hopes to design new vaccines for flaviviruses and improve communication strategies to enhance public acceptance of vaccination. Yellow4FLAVI relies on unprecedented interdisciplinary collaboration, gathering major academic and research institutions, as well as 13 industrial partners from 7 countries.

Objective

While endemic to the tropics, flaviviruses like Zika, dengue, West Nile or yellow fever virus are re-emerging pathogens of global health concern. Climate change and urbanization have largely contributed to the dissemination of their mosquito vector and Europe has in recent years been regularly confronted with autochthonous cases. Few vaccines are licensed to prevent flavivirus disease, but the yellow fever 17D (YF17D) vaccine has a unique track record of efficiency and safety. Intriguingly, despite its success, how YF17D induces immunity remains poorly understood. The YELLOW4FLAVI consortium aims to fill the gaps in our understanding of the mechanism of action of this vaccine by linking the structure of the viral particle to the resulting host immune response, in order to learn about optimal vaccine design for flaviviruses in general. Since social acceptance of vaccines is critical for their success, we will also develop optimal communication methods. This will provide us with the tools to tailor vaccine design not only to achieve optimal immune protection, but also to facilitate actual implementation.We are molecular and structural virologists, cell biologists, immunologists, computational scientists, clinicians, and social scientists assembled in a tight collaborative network. To pursue our goal of obtaining a blueprint for determinants of long-lasting immunity for flavivirus vaccine candidates, we will use cutting-edge technologies like cryo-EM, super resolution microscopy, spatial transcriptomics, high-dimensional spectral flow cytometry, single-cell RNA sequencing, advanced cell engineering, small animal models, and clinical studies. In a unique manner, the consortium thereby follows a thread of events from the early response at the site of vaccine injection to the population perception of vaccination, harnessing an enhanced understanding of one of the most successful vaccines of mankind for the development of novel lines of defense against new and old threats.

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-RIA - HORIZON Research and Innovation Actions

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Call for proposal

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(opens in new window) HORIZON-HLTH-2023-DISEASE-03

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Coordinator

INSTITUT PASTEUR
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 744 925,00
Address
RUE DU DOCTEUR ROUX 25-28
75724 Paris
France

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Region
Ile-de-France Ile-de-France Hauts-de-Seine
Activity type
Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 744 925,00

Participants (13)

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