Cited by 109Virus-based gene therapy researchT-cell and Retrovirus StudiesHIV Research and Treatment

Integration of mini-retroviral DNA: a cell-free reaction for biochemical analysis of retroviral integration

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Fujiwara, T, Craigie, R·1989·Proceedings of the National Academy of Sciences

Abstract

After retroviral infection of a permissive cell, the viral RNA is reverse-transcribed to make a DNA copy of the viral genome. Integration of this DNA copy into the host genome is a necessary step for efficient viral replication. We have developed a cell-free system for integration of exogenous mini-retroviral DNA. The termini of this linear mini-Moloney murine leukemia virus (MoMLV) DNA are designed to mimic the ends of authentic unintegrated MoMLV DNA. The viral proteins required for integration can be provided either as a cytoplasmic extract of MoMLV-infected NIH 3T3 cells or as disrupted MoMLV particles. Phage lambda DNA serves as the target for integration. Genetic markers present on the mini-MoMLV DNA enable integration events to be detected, and the recombinants recovered, by selection in Escherichia coli. Integration, which occurs at heterogeneous locations in the target DNA, is absolutely dependent on the presence of a source of viral proteins and a divalent cation in the reaction mixture. The fidelity of the integration reaction was confirmed by sequencing the junctions between the integrated MoMLV DNA and adjacent lambda DNA sequence. In each case, as expected for authentic MoMLV DNA integration, a 4-base-pair duplication of target DNA sequence flanked the integrated MoMLV DNA.

Integrity signals

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Crossref · 10.1073/pnas.86.9.3065

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13 of 13 references verified0 citation errors · 0 not checkable

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  • PIC-containing reverse-transcribed dsDNA can be integrated into heterologous DNA in vitro.

    “These studies demonstrated that PIC-containing reverse-transcribed dsDNA could be integrated into a heterologous DNA (Fujiwara and Mizuuchi 1988, Fujiwara and Craigie 1989, Bushman et al. 1990, Craigie et al. 1990, Katz et al. 1990, Lee and Coffin 1990, Engelman et al. 1991, Brown 1997).”

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Authors
Fujiwara, T., & Craigie, R.
Affiliations
National Institute of Diabetes and Digestive and Kidney Diseases (US)
Venue
Proceedings of the National Academy of Sciences
Published
1989-05
Volume
86
Issue
9
Pages
3065-3069
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1971994381
Cited by
109
References
13
Citations by year
2025: 1 · 2023: 2 · 2019: 1 · 2018: 1 · 2016: 3 · 2015: 1 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
9.02
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and Retrovirus Studies
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
Keywords
retroviral integration, Moloney murine leukemia virus, reverse transcription, target site duplication, divalent cations
MeSH terms
Animals, Base Sequence, Cell Line, Cell-Free System, Chromatography, Gel, Cytoplasm, DNA Nucleotidyltransferases, DNA, Viral, Moloney murine leukemia virus, Bacteriophage lambda, Recombination, Genetic, Viral Proteins, Virus Replication, Integrases, Mice

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