title: Subcellular imaging of dynamic protein interactions by bioluminescence resonance energy transfer.
abstract: Despite the fact that numerous studies suggest the existence of receptor multiprotein complexes, visualization and monitoring of the dynamics of such protein assemblies remain a challenge. In this study, we established appropriate conditions to consider spatiotemporally resolved images of such protein assemblies using bioluminescence resonance energy transfer (BRET) in mammalian living cells. Using covalently linked Renilla luciferase and yellow fluorescent proteins, we depicted the time course of dynamic changes in the interaction between the V2-vasopressin receptor and beta-arrestin induced by a receptor agonist. The protein-protein interactions were resolved at the level of subcellular compartments (nucleus, plasma membrane, or endocytic vesicules) and in real time within tens-of-seconds to tens-of-minutes time frame. These studies provide a proof of principle as well as experimental parameters and controls required for high-resolution dynamic studies using BRET imaging in single cells.
authors.affiliation: Institut de Génomique fonctionnelle, CNRS UMR5203, INSERM U661, University of Montpellier, Montpellier, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Coulon
authors.forename: Martin
authors.initials: M
authors.lastname: Audet
authors.forename: Vincent
authors.initials: V
authors.lastname: Homburger
authors.forename: Joël
authors.initials: J
authors.lastname: Bockaert
authors.forename: Laurent
authors.initials: L
authors.lastname: Fagni
authors.forename: Michel
authors.initials: M
authors.lastname: Bouvier
authors.forename: Julie
authors.initials: J
authors.lastname: Perroy
mesh_terms: D002460:Cell Line; D031541:Fluorescence Resonance Energy Transfer / Q000379:methods*; D006801:Humans; D007668:Kidney / Q000378:metabolism*; D008163:Luminescent Measurements; D008164:Luminescent Proteins / Q000378:metabolism*; D008856:Microscopy, Fluorescence / Q000379:methods*; D025941:Protein Interaction Mapping / Q000379:methods*; D013347:Subcellular Fractions / Q000378:metabolism* / Q000648:ultrastructure*
chemical_list: D008164:Luminescent Proteins