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The Biological Membranes Group analyses...

The Biological Membranes Group analyses the molecular, structural and mechanistic bases of biological functions by using standard biochemistry techniques (expression and purification of recombinant enzymes, biochemical characterization of these enzymes, study of the structure-function relationships of these molecules, study of protein-ligand and protein-membrane interactions, lipidomics), at the level of both proteins and lipids but also by developing multidisciplinary approaches at the interfaces with Chemistry, Physics and Biology (study of the dynamics and organization of biological membranes under physiological or pathological conditions, development of new fluorescence tools in spectroscopy and microscopy, Fourier transform infrared spectroscopy, polarization modulation-infrared reflection-adsorption spectroscopy, Brewster angle microscopy, rheological and tribological properties of biomimetic or natural vesicles...), purification and characterization of various extracellular vesicles (exosomes, matrix vesicles, synovial vesicles).

In this perspective, several biological models are studied/used ranging from liposomes, lipid monolayers, lipid bilayers to cells.

Two topics are particularly developed (2 theses are in progress) related to the study of the dynamics of biological membranes through the use of fluorescence probes developed in the team. One thesis concerns the "Biophysicochemical characterization of cell membranes during tumorigenesis", with an application to breast and prostate cancer, the other is interested in joint pathologies and is entitled "Role of membrane fluidity in the behavior of synovial vesicles from healthy and pathological sampling ".