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Related Experiment Videos

Site-specific integration by adeno-associated virus

R M Linden1, P Ward, C Giraud

  • 1Department of Microbiology, Hearst Microbiology Research Center, Cornell University Medical College, New York, NY 10021, USA.

Proceedings of the National Academy of Sciences of the United States of America
|October 15, 1996
PubMed
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Adeno-associated virus (AAV) DNA integrates site-specifically into human chromosome 19 (AAVS1). Cellular DNA sequences direct this recombination, which involves viral replication origins, leading to a proposed replication-mediated integration model.

Area of Science:

  • Molecular Biology
  • Genetics
  • Virology

Background:

  • Adeno-associated virus (AAV) is a promising gene delivery vector.
  • Wild-type AAV does not cause human disease and integrates into chromosome 19 (AAVS1).

Purpose of the Study:

  • To elucidate the mechanism of AAV DNA integration into AAVS1.
  • To identify the DNA sequences and cellular factors involved in targeted AAV integration.

Main Methods:

  • Utilized a functional model system for AAV DNA integration studies.
  • Analyzed recombinant junctions from an integration assay.
  • Identified minimal DNA signals within AAVS1 required for integration.

Main Results:

  • Confirmed that cellular DNA sequences direct AAV integration into AAVS1.

Related Experiment Videos

  • Observed that recombinant junctions resemble those in latently infected cells.
  • Determined that minimal AAVS1 integration signals contain functional viral replication origins.

    • Conclusions:

    • AAV integration into AAVS1 is a cellularly directed process.
    • The viral origin of replication plays a role in targeted integration.
    • Proposed a replication-mediated model for AAV DNA integration.