Objectif The immune system coordinates vital responses against a plethora of threats. It relies on well-described signalling networks via soluble proteins and cell-to-cell contacts. The secretory pathway traffics all secreted and surface proteins, but the mechanism of how immune cells control this process is unclear.Rhomboid-like proteins are a family of polytopic intramembrane proteins serine proteases and pseudoenzymes found in all organisms. Most eukaryotic rhomboid-like proteins regulate the fate of proteins in the secretory pathway. The rhomboid protease RHBDL4 is reported to regulate ER associated degradation (ERAD). The rhomboid pseudoenzyme, iRhom2, is essential for the trafficking and maturation of TACE, and subsequent TNF release in response to inflammatory stimuli in myeloid cells. Little is understood about the mechanism of how these rhomboid-like proteins regulate trafficking.I hypothesise that RHBDL4 regulates signalling networks in myeloid cells, similarly to iRhom2. Indeed, according to my preliminary data, RHBDL4 and iRhom2 are both expressed in human myeloid cells, and are induced by interferon gamma, a modulator of signalling networks in immunity.In this project, I aim to provide cell biological and mechanistic insight into RHBDL4 and iRhom2 regulation of signalling networks in human immunity. I will identify new interactors of RHBDL4 and iRhom2 via a novel biochemical screen called BioID. Candidates will be validated using conventional cell biological methodologies and a new interaction assay called M-Track. I will confirm these interactions in a quasi-physiological context, using a human ex vivo macrophage system. The biological significance of the interactions will be studied using detergent-permeabilised cellular systems of human macrophages. My focus on human rhomboids and immunity integrates a very timely area of fundamental cell biology with a topic of direct relevance to human health. Champ scientifique medical and health sciencesbasic medicinepharmacology and pharmacydrug discoverymedical and health sciencesmedical biotechnologygenetic engineeringmedical and health sciencesbasic medicineimmunologymedical and health scienceshealth sciencesinfectious diseasesRNA virusesHIVnatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsenzymes 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 Thème(s) MSCA-IF-2014-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF) Appel à propositions H2020-MSCA-IF-2014 Voir d’autres projets de cet appel Régime de financement MSCA-IF-EF-ST - Standard EF Coordinateur THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD Contribution nette de l'UE € 183 454,80 Adresse WELLINGTON SQUARE UNIVERSITY OFFICES OX1 2JD Oxford Royaume-Uni Voir sur la carte Région South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire 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 € 183 454,80