Project description DEENESFRITPL The role of stress on cellular ageing Cellular ageing is an enigmatic process with many of its aspects remaining poorly understood. The key objective of the EU-funded NARESICA project is to investigate the role of stress on the ageing process. Using telomere length as a biomarker of ageing, researchers will study how chronic stress and in particular glucocorticoid stress hormones accelerate ageing in two avian species. Emphasis will be placed on a number of potential drivers of ageing such as mitochondrial function, oxidative stress, DNA damage and mTOR cellular signalling. Collectively, the project's findings will unveil important information on a fundamental biological process with clinical implications. Show the project objective Hide the project objective Objective Previous research has identified stress exposure as a key factor influencing health state and ageing rate. The overall aim of the proposed project is to investigate the precise mechanisms linking stress exposure to accelerated cellular ageing (using telomere length as a biomarker of ageing), and to identify potential mechanisms allowing some species to better prevent stress-induced ageing than others. To this aim I will use two avian species (Japanese quail and king penguin) to investigate (1) if chronic stress affects telomere shortening differently between species exhibiting contrasted stress resistance, (2) if glucocorticoid ‘stress’ hormones are directly responsible of the stress-induced alterations in telomere dynamics, (3) by which mechanisms (i.e. alterations of mitochondrial function, oxidative stress and DNA damage, impaired mTOR cellular signalling or telomere maintenance) stress exposure is accelerating telomere shortening, and if king penguin have specific mechanisms preventing/limiting stress-induced telomere shortening, and (4) if chronic stress / glucocorticoid hormones modify the acute oxidative stress responses of individuals. To this end, I will employ experimental approaches manipulating stress exposure and glucocorticoid hormones in captive Japanese quail and wild king penguins, and measure the resulting impact on telomere shortening and its potential cellular drivers (mitochondrial function, oxidative stress, mTOR cellular signalling). This project will enable a two-way transfer of skills and competences between the applicant and the host, by providing training to the applicant regarding mitochondrial biology, cellular signalling and gene expression, and by providing the host with the opportunity to integrate an ageing component through the use of telomeres in his current and future projects. Fields of science natural sciencesbiological sciencesgeneticsDNA Keywords telomere mitochondria oxidative stress glucocorticoid hormone bird Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2019 - Individual Fellowships Call for proposal H2020-MSCA-IF-2019 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator UNIVERSITE LYON 1 CLAUDE BERNARD Net EU contribution € 184 707,84 Address Boulevard du 11 novembre 1918 num43 69622 Villeurbanne cedex France See on map Region Auvergne-Rhône-Alpes Rhône-Alpes Rhône Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00
