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- W3119389919 abstract "ABSTRACT Akin to short-hairpin RNAs and antisense oligonucleotides which efficaciously recruit endogenous cellular machinery such as Argonaute and RNase H to enable targeted RNA knockdown, simple long antisense guide RNAs ( 1 ) can recruit endogenous adenosine deaminases acting on RNA (ADARs) to enable programmable A-to-I RNA editing, without requiring co-delivery of any exogenous proteins. This approach is highly specific, however the efficiency is typically lower than observed with enzyme overexpression. Conjecturing this was due in part to the short half-life and residence times of guide RNAs, here we engineer highly stable c ircular AD AR recruiting guide RNAs (cadRNAs), which can be delivered not only by genetically encoding on DNA vectors, but also via transfection of RNA molecules transcribed in vitro . Using these cadRNAs, we observed robust RNA editing across multiple sites and cell lines, in both untranslated and coding regions of RNAs, vastly improved efficiency and durability of RNA editing, and high transcriptome-wide specificity. High transcript-level specificity was achieved by further engineering to reduce bystander editing. Additionally, in vivo delivery of cadRNAs via adeno-associated viruses (AAVs) enabled robust 38% RNA editing of the mPCSK9 transcript in C57BL/6J mice livers, and 12% UAG-to-UGG RNA correction of the amber nonsense mutation in the IDUA-W392X mouse model of mucopolysaccharidosis type I-Hurler (MPS I-H) syndrome. Taken together, cadRNAs enable efficacious programmable RNA editing with application across diverse protein modulation and gene therapeutic settings." @default.
- W3119389919 created "2021-01-18" @default.
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- W3119389919 date "2021-01-13" @default.
- W3119389919 modified "2023-09-27" @default.
- W3119389919 title "Robust RNA editing via recruitment of endogenous ADARs using circular guide RNAs" @default.
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- W3119389919 doi "https://doi.org/10.1101/2021.01.12.426286" @default.
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