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Michler, T. ; Große, S.* ; Mockenhaupt, S.* ; Röder, N. ; Stückler, F. ; Knapp, B. ; Ko, C. ; Heikenwälder, M. ; Protzer, U. ; Grimm, D.*

Blocking sense-strand activity improves potency, safety and specificity of anti-hepatitis B virus short hairpin RNA.

EMBO Mol. Med. 8, 1082-1098 (2016)
Publ. Version/Full Text Supplement DOI
Open Access Gold
Creative Commons Lizenzvertrag
Hepatitis B virus (HBV) is a promising target for therapies based on RNA interference (RNAi) since it replicates via RNA transcripts that are vulnerable to RNAi silencing. Clinical translation of RNAi technology, however, requires improvements in potency, specificity and safety. To this end, we systematically compared different strategies to express anti-HBV short hairpin RNA (shRNA) in a pre-clinical immunocompetent hepatitis B mouse model. Using recombinant Adeno-associated virus (AAV) 8 vectors for delivery, we either (i) embedded the shRNA in an artificial mi(cro)RNA under a liver-specific promoter; (ii) co-expressed Argonaute-2, a rate-limiting cellular factor whose saturation with excess RNAi triggers can be toxic; or (iii) co-delivered a decoy ("TuD") directed against the shRNA sense strand to curb off-target gene regulation. Remarkably, all three strategies minimised adverse side effects as compared to a conventional shRNA vector that caused weight loss, liver damage and dysregulation of > 100 hepatic genes. Importantly, the novel AAV8 vector co-expressing anti-HBV shRNA and TuD outperformed all other strategies regarding efficiency and persistence of HBV knock-down, thus showing substantial promise for clinical translation.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Adeno‐associated Virus ; Rna Interference ; Hepatitis B Virus ; Short Hairpin Rna ; Tough Decoy; Adenoassociated Viral Vectors; Complementary Aav Vectors; Mammalian-cells; In-vivo; Hemophilia-b; Hepatocellular-carcinoma; Artificial Micrornas; Argonaute Proteins; Interfering Rnas; Gene-expression
ISSN (print) / ISBN 1757-4676
e-ISSN 1757-4684
Quellenangaben Volume: 8, Issue: 9, Pages: 1082-1098 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place Chichester
Reviewing status Peer reviewed