Mesyl phosphoramidate backbone modified antisense oligonucleotides targeting miR-21 with enhanced in vivo therapeutic potency by Patutina, OA, Gaponova Miroshnichenko, SK, Sen'kova, AV, Savin, IA, Gladkikh, DV, Burakova, EA, Fokina, AA, Maslov, MA, Shmendel', EV, Wood, MJA, Vlassov, VV, Altman, S, Stetsenko, DA, Zenkova, MA