Agents and methods for increasing dystrophin protein expression in muscle through blocking of specific microRNAs and microRNA binding sites on the dystrophin 3′ untranslated region (miR-146a, miRNA-146b, miR-223, miR-320a, miR374a, and miR-382). Methods for increasing the amount of dystrophin useful for effective therapeutic intervention for Becker muscular dystrophy, Duchenne muscular dystrophy, and other disorders where loss of dystrophin from muscle causes pathology.