Cited by 73CRISPR and Genetic EngineeringRNA Interference and Gene DeliveryRNA regulation and disease

Chemically modified guide RNAs enhance CRISPR-Cas13 knockdown in human cells

Open access
Méndez-Mancilla, Alejandro, Wessels, Hans-Hermann, Legut, Mateusz, Kadina, Anastasia, Mabuchi, Megumu, Walker, John, Robb, G. Brett, Holden, Kevin +1 more·2022·Cell Chemical Biology

Published version of a preprint

Abstract

RNA-targeting CRISPR-Cas13 proteins have recently emerged as a powerful platform to modulate gene expression outcomes. However, protein and CRISPR RNA (crRNA) delivery in human cells can be challenging with rapid crRNA degradation yielding transient knockdown. Here we compare several chemical RNA modifications at different positions to identify synthetic crRNAs that improve RNA targeting efficiency and half-life in human cells. We show that co-delivery of modified crRNAs and recombinant Cas13 enzyme in ribonucleoprotein (RNP) complexes can alter gene expression in primary CD4+ and CD8+ T cells. This system represents a robust and efficient method to modulate transcripts without genetic manipulation.

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Crossref · 10.1016/j.chembiol.2021.07.011

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  • crRNAs are typically protected from degradation while complexed with Cas13, but the ends of longer bcgRNA molecules may still be accessible and susceptible to degradation.

    “While we expect that crRNA are typically protected from degradation while complexed with Cas13 (refs. 31,32), the ends of longer bcgRNA molecules may still be accessible and susceptible to degradation.”

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Authors
Méndez-Mancilla, A., Wessels, H.-H., Legut, M., Kadina, A., Mabuchi, M., Walker, J., Robb, G. B., Holden, K., & Sanjana, N. E.
Affiliations
  • New York Genome Center (US)
  • Synthego (United States) (US)
  • New England Biolabs (United States) (US)
Corresponding author
Sanjana, Neville E.
Venue
Cell Chemical Biology
Publisher
Elsevier BV
Published
2022-02
Volume
29
Issue
2
Pages
321-327.e4
ISSN
  • 2451-9448 (ISSN-L)
  • 2451-9456
OpenAlex
W3190407283
Cited by
68
References
52
Citations by year
2026: 16 · 2025: 11 · 2024: 14 · 2023: 13 · 2022: 14
FWCI
3.61
Type
journal article
Language
en
Open access
Locations
  • Cell chemical biology (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Human Genome Research Institute (DP2HG010099)
  • New York University
  • National Cancer Institute (R01CA218668)
  • New York Genome Center
  • National Institute of General Medical Sciences (R01GM138635)
  • Defense Advanced Research Projects Agency (D18AP00053)
  • National Institutes of Health
  • Cancer Research Institute
  • Brain and Behavior Research Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
CRISPR-Cas13, ribonucleoprotein complexes, gene knockdown, T cells
MeSH terms
Gene Editing, RNA, Guide, CRISPR-Cas Systems, Cells, Cultured, Humans, CRISPR-Cas Systems, CRISPR-Associated Proteins

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