Cited by 105Virus-based gene therapy researchCRISPR and Genetic EngineeringRNA Interference and Gene Delivery

Targeted Genome Modifications Using Integrase-deficient Lentiviral Vectors

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Cornu, Tatjana I, Cathomen, Toni·2007·Molecular Therapy

Abstract

Gene correction aims at repairing a defective gene directly in the cellular genome, which warrants tissue-specific and sustained expression of the repaired gene through its endogenous promoter. We have developed a novel system based on integrase-deficient lentiviral vectors (IDLVs) that allows us to correct an endogenous mutation using a strategy based on homologous recombination (HR). In a proof-of-concept approach, an IDLV encoding a repair template was co-delivered with an I-SceI nuclease expression vector to rescue a defective enhanced green fluorescent protein (EGFP) gene. Expression of the nuclease created a double-strand break within the target locus, which was crucial for stimulating IDLV-based gene repair. Stable gene correction was realized in up to 12% of the cells, depending on the vector dose, the nuclease expression levels, and the cell type. Genotypic analyses confirmed that gene correction was the result of genuine HR between the target locus and the IDLV repair template. This study presents IDLVs as valuable tools for introducing precise and permanent genetic modifications in human cells.

Integrity signals

Registry

Crossref · 10.1038/sj.mt.6300345

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  • An NILV encoding a repair template co-transported with an I-SceI nuclease expression vector rescued a defective EGFP gene by creating a double-strand break and stimulating stable gene correction.

    “For example, an NILV encoding a repair template was co-transported with an I-SceI nuclease expression vector to rescue a defective enhanced green fluorescent protein (EGFP) gene. Expression of the nuclease created a double-strand break (DSB) within the targeted locus and stimulated stable gene correction at the end of the process [21].”
  • NILVs can be co-transduced into cells with zinc finger nucleases, which facilitate recombination of DNA encoded in the vector with a specific site in the host DNA.

    “NILVs can also be co-transduced into cells with zinc finger nucleases, which facilitate recombination of DNA encoded in the vector with a specific site in the host DNA [89].”

    From Clinical use of lentiviral vectors (2018) · cites this paper as [89]

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Authors
Cornu, T. I., & Cathomen, T.
Affiliations
Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Cathomen, Toni
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2007-12
Volume
15
Issue
12
Pages
2107-2113
ISSN
1525-0016 (ISSN-L)
OpenAlex
W1974572528
Cited by
105
References
51
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 1 · 2018: 2 · 2017: 7 · 2016: 4 · 2015: 6 · 2014: 10 · 2013: 5 · 2012: 11
FWCI
5.18
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • 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
Keywords
gene correction, homologous recombination, DNA double-strand breaks, targeted genome modification, human cells, gene therapy
MeSH terms
Base Sequence, Genetic Vectors, Genotype, Transduction, Genetic, Gene Expression, Lentivirus, Polymerase Chain Reaction, Genome, DNA Primers

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