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Competition for Space in Development and Diseases

Developing tissues have a remarkable plasticity illustrated by their capacity to regenerate and form normal organs despite strong perturbations. This requires the adjustment of single cell behaviour to their neighbours and to tiss... ver más

30/06/2023

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

INSTITUT PASTEUR No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-06-30

ERC-2017-STG: ERC Starting Grant Scope:Objectives

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Cerrada hace 8 años

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Este proyecto no cuenta con búsquedas de partenariado abiertas en este momento.

Información adicional privada

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

2 Participantes

1.49M€ | Lider

KAO CORPORATION

176.03K€ | Participante

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Duración del proyecto: 68 meses Fecha Inicio: 2017-10-04
Fecha Fin: 2023-06-30

Líder del proyecto

INSTITUT PASTEUR No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Developing tissues have a remarkable plasticity illustrated by their capacity to regenerate and form normal organs despite strong perturbations. This requires the adjustment of single cell behaviour to their neighbours and to tissue scale parameters. The modulation of cell growth and proliferation was suggested to be driven by mechanical inputs, however the mechanisms adjusting cell death are not well known. Recently it was shown that epithelial cells could be eliminated by spontaneous live-cell delamination following an increase of cell density. Studying cell delamination in the midline region of the Drosophila pupal notum, we confirmed that local tissue crowding is necessary and sufficient to drive cell elimination and found that Caspase 3 activation precedes and is required for cell delamination. This suggested that a yet unknown pathway is responsible for crowding sensing and activation of caspase, which does not involve already known mechanical sensing pathways. Moreover, we showed that fast growing clones in the notum could induce neighbouring cell elimination through crowding-induced death. This suggested that crowding-induced death could promote tissue invasion by pretumoural cells. Here we will combine genetics, quantitative live imaging, statistics, laser perturbations and modelling to study crowding-induced death in Drosophila in order to: 1) find single cell deformations responsible for caspase activation 2) find new pathways responsible for density sensing and apoptosis induction 3) test their contribution to adult tissue homeostasis, morphogenesis and cell elimination coordination 4) study the role of crowding-induced death during competition between different cell types and tissue invasion 5) Explore theoretically the conditions required for efficient space competition between two cell populations. This project will provide essential information for the understanding of epithelial homeostasis, mechanotransduction and tissue invasion by tumoural cells

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