miRNAs as serum biomarkers for Duchenne muscular dystrophy.

Davide Cacchiarelli (1) , Ivano Legnini (1) , Julie Martone (1) , Valentina Cazzella (1) , Adele d'Amico (2) , Enrico Bertini (2) , Irene Bozzoni (3)

1 Department of Biology and Biotechnology "Charles Darwin"
2 Lab of Molecular Medicine, Department of Neuroscience
3 Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti

Dystrophin absence in Duchenne muscular dystrophy (DMD) causes severe muscle degeneration. We describe that, as consequence of fibre damage, specific muscle-miRNAs are released in to the bloodstream of DMD patients and their levels correlate with the severity of the disease. The same miRNAs are abundant also in the blood of mdx mice and recover to wild-type levels in animals 'cured' through exon skipping. Even though creatine kinase (CK) blood levels have been utilized as diagnostic markers of several neuromuscular diseases, including DMD, we demonstrate that they correlate less well with the disease severity. Although the analysis of a larger number of patients should allow to obtain more refined correlations with the different stages of disease progression, we propose that miR-1, miR-133, and miR-206 are new and valuable biomarkers for the diagnosis of DMD and possibly also for monitoring the outcomes of therapeutic interventions in humans. Despite many different DMD therapeutic approaches are now entering clinical trials, a unifying method for assessing the benefit of different treatments is still lacking.

Domaines: Médecine humaine et pathologie; Biochimie, Biologie Moléculaire

Davide Cacchiarelli, Ivano Legnini, Julie Martone, Valentina Cazzella, Adele d'Amico, et al.. miRNAs as serum biomarkers for Duchenne muscular dystrophy.. EMBO Molecular Medicine, 2011, 3 (5), pp.258-65. ⟨10.1002/emmm.201100133⟩. ⟨pasteur-00976762⟩