Description du projet
Comprendre les principes physiques de la formation de communautés bactériennes
Les cellules bactériennes constituent la forme la plus élémentaire de vie cellulaire, mais les scientifiques ont jusqu’ici été incapables de concevoir des modèles théoriques sur la croissance bactérienne, notamment dans des systèmes naturels complexes. La visée du projet BPLAN, financé par l’UE, est de développer des approches expérimentales novatrices pour étudier les principes physiques biologiques de la morphogenèse des colonies bactériennes. Les résultats aideront à mieux comprendre les premiers stades de la formation des communautés bactériennes, ainsi que l’impact des interactions environnementales sur la transition vers une structure en 3D. Plus important encore, les découvertes fourniront des données concernant le mécanisme d’exposition aux antibiotiques, ouvrant ainsi la voie à des stratégies anti-microbiennes améliorées.
Objectif
The growth of a bacterial colony is a fascinating example of a biological process that can be interpreted in physical terms as the interaction of a collection of elementary units - the cells - with the surrounding environment and within themselves, whereby energy is harnessed and dissipated, thus determining inherent non-equilibrium conditions. Although bacterial cells are one of the simplest forms of life, scientists have so far found difficult to build theoretical models of bacterial growth and morphology as well as to perform controlled experiments of the real systems occurring in nature. These difficulties arise from the naturally occurring conditions that are characterized by a large degree of complexity in both morphological and chemical terms.
The aim of this project is to investigate through novel experimental approaches the biological physics which is at the foundation of the formation of 2D bacterial microcolony and its successive development to a 3D structure. To this purpose, several experimental techniques, from traction force microscopy, through laser ablation and soft lithography will be exploited. Furthermore, experimental results obtained from these studies will be of great relevance for the validation of numerical and theoretical models of bacterial colony morphogenesis and antibiotics exposure. The planned research activities will be carried out in one of the top research laboratory in Europe for active matter and within the wider context of École Normale Supérieure, a world renowned academic institution in the fields of statistical mechanics, soft matter and optics.
This project aims thus at providing fundamental insights into the development of early stages of bacterial community formation, trying to establish what physical parameters related to the cells, the environment and their interactions determine the transitions from a 2D to a 3D structure, and lastly to gain control over these parameters.
Champ scientifique
- natural sciencesphysical sciencescondensed matter physicssoft matter physics
- natural sciencesphysical sciencesopticsmicroscopy
- medical and health sciencesbasic medicinepharmacology and pharmacypharmaceutical drugsantibiotics
- natural sciencesphysical sciencesclassical mechanicsstatistical mechanics
- natural sciencesphysical sciencesopticslaser physics
Programme(s)
Régime de financement
MSCA-IF-EF-ST - Standard EFCoordinateur
75794 Paris
France