Objectif Centrosomes are the main microtubule-organizing centers of animal cells. They influence the morphology of the microtubule cytoskeleton and function as the base of primary cilium, a nexus for important signaling pathways. Structural and functional defects in centrosome/cilium complex cause a variety of human diseases including cancer, ciliopathies and microcephaly. To understand the relationship between human diseases and centrosome/cilium abnormalities, it is essential to elucidate the biogenesis of centrosome/cilium complex and the control mechanisms that regulate their structure and function. To tackle these fundamental problems, we will dissect the function and regulation of centriolar satellites, the array of granules that localize around the centrosome/cilium complex in mammalian cells. Only recently interest in the satellites has grown because mutations affecting satellite components were shown to cause ciliopathies, microcephaly and schizophrenia. Remarkably, many centrosome/cilium proteins localize to these structures and we lack understanding of when, why and how these proteins localize to satellites. The central hypothesis of this grant is that satellites ensure proper centrosome/cilium complex structure and function by acting as transit paths for modification, assembly, storage, stability and trafficking of centrosome/cilium proteins. In Aim 1, we will identify the nature of regulatory and molecular relationship between satellites and the centrosome/cilium complex. In Aim 2, we will elucidate the role of satellites in proteostasis of centrosome/cilium proteins. In Aim 3, we will investigate the functional significance of satellite-localization of centrosome/cilium proteins during processes that go awry in human disease. Using a multidisciplinary approach, the proposed research will expand our knowledge of the spatiotemporal regulation of the centrosome/cilium complex and provide new insights into pathogenesis of ciliopathies and primary microcephaly. Champ scientifique natural sciencesbiological sciencesbiochemistrybiomoleculesproteinsproteomicsengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringsatellite technologynatural sciencesphysical sciencesopticsmicroscopyelectron microscopynatural sciencesbiological sciencesgeneticsmutationnatural sciencesbiological sciencesgeneticsgenomes Mots‑clés centrosome centriolar satellites centriole primary cilium microtubule ciliopathies centriole duplication ciliogenesis cancer primary microcephaly proximity-labeling SNAP BioID APEX Programme(s) H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme Thème(s) ERC-StG-2015 - ERC Starting Grant Appel à propositions ERC-2015-STG Voir d’autres projets de cet appel Régime de financement ERC-STG - Starting Grant Institution d’accueil KOC UNIVERSITY Contribution nette de l'UE € 1 499 818,75 Adresse RUMELI FENERI YOLU SARIYER 34450 Istanbul Turquie Voir sur la carte Région İstanbul İstanbul İstanbul Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Site web Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 1 499 818,75 Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution nette de l'UE Tout développer Tout réduire KOC UNIVERSITY Turquie Contribution nette de l'UE € 1 499 818,75 Adresse RUMELI FENERI YOLU SARIYER 34450 Istanbul Voir sur la carte Région İstanbul İstanbul İstanbul Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Site web Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 1 499 818,75