Objectif Asymmetric cell division is a key mechanism for the generation of cell diversity in eukaryotes. During this process, a polarized mother cell divides into non-equivalent daughters. These may differentially inherit fate determinants, irreparable damages or age determinants. Our aim is to decipher the mechanisms governing the individualization of daughters from each other. In the past ten years, our studies identified several lateral diffusion barriers located in the plasma membrane and the endoplasmic reticulum of budding yeast. These barriers all restrict molecular exchanges between the mother cell and its bud, and thereby compartmentalize the cell already long before its division. They play key roles in the asymmetric segregation of various factors. On one side, they help maintain polarized factors into the bud. Thereby, they reinforce cell polarity and sequester daughter-specific fate determinants into the bud. On the other side they prevent aging factors of the mother from entering the bud. Hence, they play key roles in the rejuvenation of the bud, in the aging of the mother, and in the differentiation of mother and daughter from each other. Recently, we accumulated evidence that some of these barriers are subject to regulation, such as to help modulate the longevity of the mother cell in response to environmental signals. Our data also suggest that barriers help the mother cell keep traces of its life history, thereby contributing to its individuation and adaption to the environment. In this project, we will address the following questions: 1 How are these barriers assembled, functioning, and regulated? 2 What type of differentiation processes are they involved in? 3 Are they conserved in other eukaryotes, and what are their functions outside of budding yeast? These studies will shed light into the principles underlying and linking aging, rejuvenation and differentiation. Champ scientifique humanitieshistory and archaeologyhistorynatural sciencesbiological sciencescell biologycell polarity Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-AG-LS3 - ERC Advanced Grant - Cellular and Developmental Biology Appel à propositions ERC-2009-AdG Voir d’autres projets de cet appel Régime de financement ERC-AG - ERC Advanced Grant Institution d’accueil EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH Contribution de l’UE € 2 200 000,00 Adresse Raemistrasse 101 8092 Zuerich Suisse Voir sur la carte Région Schweiz/Suisse/Svizzera Zürich Zürich Type d’activité Higher or Secondary Education Establishments Contact administratif Yves Barral (Prof.) Chercheur principal Yves Barral (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH Suisse Contribution de l’UE € 2 200 000,00 Adresse Raemistrasse 101 8092 Zuerich Voir sur la carte Région Schweiz/Suisse/Svizzera Zürich Zürich Type d’activité Higher or Secondary Education Establishments Contact administratif Yves Barral (Prof.) Chercheur principal Yves Barral (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée