RESUMEN
Micro-RNAs (miRNAs) are noncoding, single stranded segments of RNA measuring 19 to 25 nucleotides in length. They play an active role in autoimmune diseases, including multiple sclerosis (MS). These structures have been studied given their implication in the process of diagnosis, disease development, treatment and prognosis of MS. Given the progressive and neurodegenerative nature of MS, miRNAs have been identified as critical mediators and molecular pinpoints of the disease, which poses them as excellent candidates for the obtention of suitable biomarkers and treatment targets. This review condenses recent findings on the role of miRNAs in multiple sclerosis, including their role in MS etiology and molecular mechanisms of the disease, exploitation of miRNAs as diagnostic tools and biomarkers, miRNAs as treatment option or target for MS, and their significance as predictors of disease prognosis.