Brothers in arms: DNA enzymes, short interfering RNA, and the emerging wave of small-molecule nucleic acid-based gene-silencing strategies.
The past decade has seen the rapid evolution of small-molecule gene-silencing strategies, driven largely by enhanced understanding of gene function in the pathogenesis of disease. Over this time, many genes have been targeted by specifically engineered agents from different classes of nucleic acid-based drugs in experimental models of disease to probe, dissect, and characterize further the complex processes that underpin molecular signaling. Arising from this, a number of molecules have been examined in the setting of clinical trials, and several have recently made the successful transition from the bench to the clinic, heralding an exciting era of gene-specific treatments. This is particularly important because clear inadequacies in present therapies account for significant morbidity, mortality, and cost. The broad umbrella of gene-silencing therapeutics encompasses a range of agents that include DNA enzymes, short interfering RNA, antisense oligonucleotides, decoys, ribozymes, and aptamers. This review tracks current movements in these technologies, focusing mainly on DNA enzymes and short interfering RNA, because these are poised to play an integral role in antigene therapies in the future.
Bhindi
Ravinay
R
Centre for Vascular Research, The University of New South Wales, Sydney, NSW 2052, Australia.
Fahmy
Roger G
RG
Lowe
Harry C
HC
Chesterman
Colin N
CN
Dass
Crispin R
CR
Cairns
Murray J
MJ
Saravolac
Edward G
EG
Sun
Lun-Quan
LQ
Khachigian
Levon M
LM
D000818:Animals; D052157:Aptamers, Nucleotide / Q000737:chemistry / Q000627:therapeutic use; D021881:DNA, Catalytic / Q000737:chemistry* / Q000378:metabolism / Q000627:therapeutic use*; D020868:Gene Silencing; D018390:Gene Targeting; D015316:Genetic Therapy / Q000379:methods*; D006801:Humans; D051379:Mice; D016376:Oligonucleotides, Antisense / Q000737:chemistry / Q000627:therapeutic use; D016337:RNA, Catalytic / Q000737:chemistry / Q000627:therapeutic use; D034741:RNA, Small Interfering / Q000737:chemistry* / Q000378:metabolism / Q000627:therapeutic use*; D011817:Rabbits; D051381:Rats
D052157:Aptamers, Nucleotide; D021881:DNA, Catalytic; D016376:Oligonucleotides, Antisense; D016337:RNA, Catalytic; D034741:RNA, Small Interfering
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