Since 2010, we have developped and implemented numerous methods in optogenetics, and even chemogenetics, in order to have access to dynamics and reversible perturbations of key biological functions such as cell adhesion, cell signaling, transcription factors, inflammation, functions of immune cells and even metabolism. Our lab proposes to share this expertise to the FBI users through access for consulting and even direct collaboration. In the Rhonalpin node, our lab is focused on the coupling between optogenetics, biosensors and metabolism imaging through FLIM imaging. Indeed, we have developed a TIRF microscope presenting a module of FastFLIM imaging. Through the use of dark acceptors, this technology allows the users to extend the possibilities in terms of combining optogenetics, biosensors, metabolic imaging through ratiometric probes and classical multicolors TIRF imaging. Moreover, TIRF imaging allows long term live imaging with low levels of photoxicity. This is essential for metabolic imaging and preserving photon budget for FLIM imaging. In the future, this system will be coupled with a module of evanescent field patterning (EFP) in order to have a specific TIRF-mode illumination of only a region of interest (microm scale).
Publications
1- An optogenetic approach to control and monitor inflammasome activation. Julien Nadjar, Sylvain Monnier, Estelle Bastien, Anne-Laure Huber, Christiane Oddou, Léa Bardoulet, Gabriel Ichim, Christophe Vanbelle, Bénédicte Py, Olivier Destaing*, Virginie Petrilli*. Recently accepted in Science Signaling. bioRxiv 2023.07.25.550490; doi: https://doi.org/10.1101/2023.07.25.550490
2-Optogenetic control of YAP cellular localisation and function. Toh PJY, Lai JKH, Hermann A, Destaing O, Sheetz MP, Sudol M, Saunders TE. EMBO Rep. 2022 Sep 5;23(9):e54401.
3-Control of SRC molecular dynamics encodes distinct cytoskeletal responses by specifying its signaling pathway usage. Kerjouan A, Boyault C, Oddou C, Hiriart-Bryant E, Pezet M, Balland M, Faurobert E, Bonnet I, Coute Y, Fourcade B, Albiges-Rizo C, Destaing O. J Cell Sci. 2021 Jan 25;134(2):jcs254599.
4-β1A integrin is a master regulator of invadosome organization and function. Destaing O, Planus E, Bouvard D, Oddou C, Badowski C, Bossy V, Raducanu A, Fourcade B, Albiges-Rizo C, Block MR. Mol Biol Cell. 2010 Dec;21(23):4108-19.