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- W2938233269 abstract "Clustered regularly interspaced short palindromic repeat (CRISPR) RNAs and their associated effector (Cas) enzymes are being developed into promising therapeutics to treat disease. However, CRISPR-Cas enzymes might produce unwanted gene editing or dangerous side effects. Drug-like molecules that can inactivate CRISPR-Cas enzymes could help facilitate safer therapeutic development. Based on the requirement of guide RNA and target DNA interaction by Cas enzymes, we rationally designed small nucleic acid-based inhibitors (SNuBs) of Streptococcus pyogenes (Sp) Cas9. Inhibitors were initially designed as 2'-O-methyl-modified oligonucleotides that bound the CRISPR RNA guide sequence (anti-guide) or repeat sequence (anti-tracr), or DNA oligonucleotides that bound the protospacer adjacent motif (PAM)-interaction domain (anti-PAM) of SpCas9. Coupling anti-PAM and anti-tracr modules together was synergistic and resulted in high binding affinity and efficient inhibition of Cas9 DNA cleavage activity. Incorporating 2'F-RNA and locked nucleic acid nucleotides into the anti-tracr module resulted in greater inhibition as well as dose-dependent suppression of gene editing in human cells. CRISPR SNuBs provide a platform for rational design of CRISPR-Cas enzyme inhibitors that should translate to other CRISPR effector enzymes and enable better control over CRISPR-based applications." @default.
- W2938233269 created "2019-04-25" @default.
- W2938233269 creator A5051788430 @default.
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- W2938233269 date "2019-06-01" @default.
- W2938233269 modified "2023-10-13" @default.
- W2938233269 title "Rationally Designed Anti-CRISPR Nucleic Acid Inhibitors of CRISPR-Cas9" @default.
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- W2938233269 doi "https://doi.org/10.1089/nat.2018.0758" @default.
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