Cited by 1,164CRISPR and Genetic EngineeringRNA regulation and diseaseRNA Research and Splicing

Transcriptome Engineering with RNA-Targeting Type VI-D CRISPR Effectors

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Konermann, Silvana, Lotfy, Peter, Brideau, Nicholas J., Oki, Jennifer, Shokhirev, Maxim N., Hsu, Patrick D.·2018·Cell

Abstract

Class 2 CRISPR-Cas systems endow microbes with diverse mechanisms for adaptive immunity. Here, we analyzed prokaryotic genome and metagenome sequences to identify an uncharacterized family of RNA-guided, RNA-targeting CRISPR systems that we classify as type VI-D. Biochemical characterization and protein engineering of seven distinct orthologs generated a ribonuclease effector derived from Ruminococcus flavefaciens XPD3002 (CasRx) with robust activity in human cells. CasRx-mediated knockdown exhibits high efficiency and specificity relative to RNA interference across diverse endogenous transcripts. As one of the most compact single-effector Cas enzymes, CasRx can also be flexibly packaged into adeno-associated virus. We target virally encoded, catalytically inactive CasRx to cis elements of pre-mRNA to manipulate alternative splicing, alleviating dysregulated tau isoform ratios in a neuronal model of frontotemporal dementia. Our results present CasRx as a programmable RNA-binding module for efficient targeting of cellular RNA, enabling a general platform for transcriptome engineering and future therapeutic development.

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Authors
Konermann, S., Lotfy, P., Brideau, N. J., Oki, J., Shokhirev, M. N., & Hsu, P. D.
Affiliations
Salk Institute for Biological Studies (US)
Corresponding author
Hsu, Patrick D.
Venue
Cell
Publisher
Elsevier BV
Published
2018-04
Volume
173
Issue
3
Pages
665-676.e14
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2793359586
Cited by
1,164
References
69
Citations by year
2026: 106 · 2025: 130 · 2024: 197 · 2023: 159 · 2022: 164 · 2021: 158 · 2020: 136 · 2019: 69 · 2018: 44
FWCI
36.89
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (DP5OD021369)
  • National Institute on Aging (R21AG056811)
  • National Cancer Institute (P30CA014195)
  • National Institute of General Medical Sciences (R01GM132465, R01GM131073)
  • National Institute of Neurological Disorders and Stroke (P30NS072031)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
RNA-targeting CRISPR, RNA-guided RNA cleavage, alternative splicing, tau isoforms, frontotemporal dementia, adeno-associated virus delivery, Ruminococcus flavefaciens, RNA interference, prokaryotic adaptive immunity
MeSH terms
RNA, Guide, CRISPR-Cas Systems, Animals, Bacterial Proteins, Cell Differentiation, Escherichia coli, Genetic Engineering, Humans, RNA, Protein Engineering, Lentivirus, Alternative Splicing, Sequence Analysis, RNA, Computational Biology, Gene Expression Profiling, RNA Interference, Ruminococcus, Mice, Induced Pluripotent Stem Cells, HEK293 Cells, Transcriptome, CRISPR-Cas Systems

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