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ORIgAMI

Financiado

Outlining the Role of IgA in Memory Instruction

Several times in human history, we faced sudden outbreaks of respiratory viruses that rapidly spread over the world before we could design broadly protective vaccines. Such was the case of the H1N1 influenza virus that killed 50 m... ver más

31/08/2028

INSERM

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

INSTITUT NATIONAL DE LA SANTE ET DE LA RECHER... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2023-03-12

ERC-2022-STG: ERC STARTING GRANTS Scope:Objectives

I+D

Cerrada hace 2 años

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No hay información privada compartida para este proyecto. Habla con el coordinador.

1 Participantes

INSERM

2.05M€ | Lider

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Duración del proyecto: 65 meses Fecha Inicio: 2023-03-12
Fecha Fin: 2028-08-31

Líder del proyecto

INSTITUT NATIONAL DE LA SANTE ET DE LA RECHER... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Descripción del proyecto Several times in human history, we faced sudden outbreaks of respiratory viruses that rapidly spread over the world before we could design broadly protective vaccines. Such was the case of the H1N1 influenza virus that killed 50 million people during the 1918 Spanish flu and SARS-CoV-2 that led to at least 5 million deaths during the current COVID-19 pandemics. Influenza and SARS-CoV-2 elicit robust humoral immune responses, including production of virus-specific antibodies of the IgM, IgG, and IgA types. In particular, IgA plays a crucial role in protecting lung mucosal surfaces by neutralizing respiratory viruses and impeding their attachment to epithelial cells. Despite its protective role, current vaccines against influenza and SARS-CoV-2 fail to produce significant levels of IgA in the respiratory tract. Then, a deeper understanding of the biology of IgA+ cells during respiratory infection is of utmost interest. ORIgAMI is based on recent unexpected findings from my team showing that germinal center B cells expressing IgA are mostly recruited towards the long-lived plasma cell compartment rather than to the memory B cell one upon influenza infection. In this frame, we will determine if the IgA BCR biases cell fate by: 1-Imprinting germinal center B cells with specific transcriptional/epigenetic programs. 2-Favoring antigen extraction and recruitment of T cell help within germinal centers. 3-Enhancing downstream B cell signalling pathways. To to this end, we will use influenza H1N1 virus as respiratory infection model combined with a series of complementary innovative tools and methodologies: de novo-generated transgenic mice, single-cell RNA/ATAC-seq, 3D imaging, DNA-based force sensors, phospho- and imaging- flow cytometry, and mass-spectrometry. A deep understanding of the biology of IgA+ B cells during respiratory viral infection is of fundamental interest and may provide clues towards the design of future vaccination approaches against air-borne pathogens.

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