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Active role of skeletal muscle extracellular matrix in muscular dystrophies

Descrizione del progetto

Distrofie muscolari: il ruolo della matrice extracellulare

Le distrofie muscolari (DM) sono un gruppo di malattie genetiche associate alla debolezza e alla perdita progressiva di muscolo. Le DM sono causate principalmente da difetti nel complesso della proteina trans-membrana distroglicano, che funziona come collegamento strutturale e funzionale tra l’apparato contrattile miofiberico e la matrice extracellulare (MEC). L’obiettivo principale del progetto DYSTROPHIC-ECM, finanziato dall’UE, è quello di identificare le alterazioni MEC associate alla DM. A tal fine, i ricercatori analizzeranno la composizione MEC utilizzando la proteomica in diversi modelli murini di DM. Il progetto esplorerà anche come le alterazioni MEC influenzano vari processi fondamentali per la fisiopatologia medica come la miogenesi, l’angiogenesi e la fibrosi.

Obiettivo

Most of the muscular dystrophies (MDs) are due to defects the trans-membrane protein complex called Dystro-Glycan
Complex, which is a structural and functional bridge between myofiber contractile apparatus and extracellular matrix
(ECM).MD research is focused upon the cellular mechanisms of the pathology and there is a lack of information about how
ECM molecules can affect MDs, although alteration in ECM composition is acknowledged since fibrosis is an important bad
outcome in the patients.Our hypothesis is that alterations in dystrophic muscle ECM directly account for mechanisms which
negatively affect skeletal muscle homeostasis.The goal of the project is to identify alterations in ECM compromised by
muscular dystrophy and to investigate their effects on cell behavior.Mdx mouse (model for Duchenne Muscular Dystrophy)
and Sarcoglycan-β-null mouse (model for Limb Girdle Muscular Dystrophy 2E) will be used.To obtain the ECMs we will take
advantage of decellularization approach that removes the cellular components while maintaining the molecular and structural
features as closer as possible to the native ECM.In tissue engineering the use of ECM biomaterials demonstrated that ECM
plays a fundamental, active role in tissue remodeling by growth factors release and ECM degradation product
action.Molecular alterations in the ECM composition will be investigated by proteomics that assures an accurate and
exhaustive characterization.ECM will be used as 3D environment to study its functions in the behavior of primary cells
involved in the pathology: myogenic stem cells, endothelial cells, fibro-adipogenic precursors and macrophages.Discovering
how alterations in dystrophic muscle ECM affect myogenesis, angiogenesis, fibrosis and inflammatory response will be of
paramount importance for a better understanding of MDs.Changing the focus of the research from the cells to the ECM, this
study will provide a new point of view and could contribute to identify new therapeutic targets.

Campo scientifico (EuroSciVoc)

Parole chiave

Programma(i)

Argomento(i)

Meccanismo di finanziamento

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Invito a presentare proposte

(si apre in una nuova finestra) H2020-MSCA-IF-2019

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Coordinatore

UNIVERSITE LYON 1 CLAUDE BERNARD
Contributo netto dell'UE
€ 295 061,76
Indirizzo
BOULEVARD DU 11 NOVEMBRE 1918 NUM43
69622 Villeurbanne Cedex
Francia
Regione
Auvergne-Rhône-Alpes Rhône-Alpes Rhône
Tipo di attività
Higher or Secondary Education Establishments
Collegamenti
Costo totale
€ 295 061,76