title: Coordinate-based co-localization-mediated analysis of arrestin clustering upon stimulation of the C-C chemokine receptor 5 with RANTES/CCL5 analogues.
abstract: G protein-coupled receptor activation and desensitization leads to recruitment of arrestin proteins from cytosolic pools to the cell membrane where they form clusters difficult to characterize due to their small size and further mediate receptor internalization. We quantitatively investigated clustering of arrestin 3 induced by potent anti-HIV analogues of the chemokine RANTES after stimulation of the C-C chemokine receptor 5 using single-molecule localization-based super-resolution microscopy. We determined arrestin 3 cluster sizes and relative fractions of arrestin 3 molecules in each cluster through image-based analysis of the localization data by adapting a method originally developed for co-localization analysis from molecular coordinates. We found that only classical agonists in the set of tested ligands were able to efficiently recruit arrestin 3 to clusters mostly larger than 150 nm in size and compare our results with existing data on arrestin 2 clustering induced by the same chemokine analogues.
authors.affiliation: Department of Human Protein Sciences, University of Geneva, CMU, Rue Michel-Servet 1, 1211, Geneva 4, Switzerland.
authors.forename: Laura
authors.initials: L
authors.lastname: Tarancón Díez
authors.forename: Claudia
authors.initials: C
authors.lastname: Bönsch
authors.forename: Sebastian
authors.initials: S
authors.lastname: Malkusch
authors.forename: Zinnia
authors.initials: Z
authors.lastname: Truan
authors.forename: Mihaela
authors.initials: M
authors.lastname: Munteanu
authors.forename: Mike
authors.initials: M
authors.lastname: Heilemann
authors.forename: Oliver
authors.initials: O
authors.lastname: Hartley
authors.forename: Ulrike
authors.initials: U
authors.lastname: Endesfelder
authors.forename: Alexandre
authors.initials: A
authors.lastname: Fürstenberg
mesh_terms: D000818:Animals; D019390:Arrestins / Q000032:analysis* / Q000378:metabolism; D016466:CHO Cells; D002417:Cattle; D002478:Cells, Cultured; D018946:Chemokine CCL5 / Q000737:chemistry* / Q000494:pharmacology*; D003412:Cricetulus; D018613:Microscopy, Confocal; D008856:Microscopy, Fluorescence; D021381:Protein Transport / Q000187:drug effects; D019713:Receptors, CCR5 / Q000819:agonists*
chemical_list: D019390:Arrestins; D018946:Chemokine CCL5; D019713:Receptors, CCR5; C082333:arrestin3