Cited by 230CRISPR and Genetic EngineeringVirus-based gene therapy researchRNA Interference and Gene Delivery

The DOI matches its Crossref record; 39 of the 40 references it cites were found in a registry or an index.

AAV-CRISPR Gene Editing Is Negated by Pre-existing Immunity to Cas9

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Abstract

Adeno-associated viral (AAV) vectors are a leading candidate for the delivery of CRISPR-Cas9 for therapeutic genome editing in vivo . However, AAV-based delivery involves persistent expression of the Cas9 nuclease, a bacterial protein. Recent studies indicate a high prevalence of neutralizing antibodies and T cells specific to the commonly used Cas9 orthologs from Streptococcus pyogenes (SpCas9) and Staphylococcus aureus (SaCas9) in humans. We tested in a mouse model whether pre-existing immunity to SaCas9 would pose a barrier to liver genome editing with AAV packaging CRISPR-Cas9. Although efficient genome editing occurred in mouse liver with pre-existing SaCas9 immunity, this was accompanied by an increased proportion of CD8 + T cells in the liver. This cytotoxic T cell response was characterized by hepatocyte apoptosis, loss of recombinant AAV genomes, and complete elimination of genome-edited cells, and was followed by compensatory liver regeneration. Our results raise important efficacy and safety concerns for CRISPR-Cas9-based in vivo genome editing in the liver.

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Crossref · 10.1016/j.ymthe.2020.04.017

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Metadata

Authors
Li, A., Tanner, M. R., Lee, C. M., Hurley, A. E., De Giorgi, M., Jarrett, K. E., Davis, T. H., Doerfler, A. M., Bao, G., Beeton, C., & Lagor, W. R.
Affiliations
  • Rice University (US)
  • Baylor College of Medicine (US)
Corresponding author
  • Bao, Gang
  • Beeton, Christine
  • Lagor, William R.
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2020-06
Volume
28
Issue
6
Pages
1432-1441
ISSN
1525-0016 (ISSN-L)
OpenAlex
W3016959969
Cited by
230
References
40
Citations by year
2026: 26 · 2025: 33 · 2024: 33 · 2023: 36 · 2022: 38 · 2021: 43 · 2020: 19
FWCI
11.02
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Digital Commons-TMC (Texas Medical Center) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Health Research Alliance (cc-by)
Funders
  • American Heart Association (19POST34430092, 19PRE34380467, GM08231, HL007676, RR024574)
  • Cancer Prevention and Research Institute of Texas (RR140081, RP180672)
  • National Institutes of Health (RR024574, HL007676, GM08231, CA125123, UG3HL151545, HL132840, U42OD026645)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
adeno-associated virus vectors, CRISPR/Cas9, SaCas9, pre-existing immunity, neutralizing antibodies, T cell response, hepatocyte apoptosis, compensatory liver regeneration, SpCas9
MeSH terms
Gene Editing, CRISPR-Associated Protein 9, RNA, Guide, CRISPR-Cas Systems, Dependovirus, Animals, Genetic Vectors, Humans, Immunization, Immunologic Memory, Biomarkers, Gene Expression, Immunophenotyping, T-Lymphocyte Subsets, Transgenes, Hepatocytes, Gene Order, Mice, Clustered Regularly Interspaced Short Palindromic Repeats

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