Skip to main content
European Commission logo print header

IMMUNOBIOLOGY OF LYMPHOID STROMAL CELLS

Description du projet

Mieux comprendre la biologie des ganglions lymphatiques

Les ganglions lymphatiques (GL) sont de petits organes présents dans tout le corps qui jouent un rôle essentiel au sein du système immunitaire en filtrant le liquide lymphatique et en piégeant les agents pathogènes. Les cellules stromales forment le cadre de soutien des GL, contrôlant le mouvement, l’activation et la survie des lymphocytes. Financé par le Conseil européen de la recherche, le projet STROMA entend mieux comprendre la biologie des cellules stromales des GL étant donné le rôle essentiel qu’elles jouent dans la régulation du système immunitaire. Les chercheurs proposent de développer des modèles murins avancés et des approches informatiques afin de suivre l’évolution des cellules stromales individuelles dans leur environnement naturel. Ils se sont fixé pour objectif de découvrir leur comportement spatio-temporel durant l’inflammation et de fournir des informations précieuses concernant le développement et le remodelage des cellules stromales des GL.

Objectif

In 1984, Nossal wrote ‘‘A readership consisting of primarily anatomists has every right to question the favorite sport of research workers in cell immunology. This is to take a lymphoid tissue and totally destroy its beautiful and elaborately designed architecture to obtain simple cell suspension of lymphocytes, which are then asked to do more or less all the jobs of the original anatomic masterpiece’’. Growing evidence that lymph node (LN) stromal cells control the motility, activation and survival of lymphocytes has reinforced this view. These architectural cells assemble in 3D networks that regulate LN homeostasis and control its ability to remodel during inflammation. Understanding stromal cell biology is thus mandatory to our full comprehension of the immune system but this ambitious objective is technically challenging. As the complexity of the LN cannot be modelled in culture, knowledge gained from in vitro experiments is limited and will not address many relevant questions related to the biology of LN stromal cells, in particular (i) the elucidation of their origin and the precursor/product relationships that link them, (ii) the determination of their behavior in inflamed LNs and (iii) their subsequent fate in LNs that have returned to homeostasis. To this aim, I have developed several original, cutting-edge multicolor fluorescent reporter mouse models and computational modeling approaches to map the fate of single stromal cells and their progeny in situ. Using this innovative approach, my group will investigate the spatio-temporal behavior and molecular cues that orchestrate the development and dynamics of the major LN stromal cell populations in vivo, at steady state and under inflammatory conditions, at the single cell level. Because the proposed studies will unravel the precursor/product relationships linking the various stromal cell types, we anticipate to provide the first “Phylogenetic tree” of LN stromal cell development and remodeling.

Régime de financement

ERC-COG - Consolidator Grant

Institution d’accueil

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Contribution nette de l'UE
€ 2 386 262,00
Adresse
RUE MICHEL ANGE 3
75794 Paris
France

Voir sur la carte

Région
Ile-de-France Ile-de-France Paris
Type d’activité
Research Organisations
Liens
Coût total
€ 2 386 262,00

Bénéficiaires (2)