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The AAV capsid can influence the epigenetic marking of rAAV delivered episomal genomes in a species dependent manner

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Listed:
  • Adriana Gonzalez-Sandoval

    (Stanford University
    Stanford University
    Encoded Therapeutics)

  • Katja Pekrun

    (Stanford University
    Stanford University)

  • Shinnosuke Tsuji

    (Stanford University
    Stanford University
    Daiichi Sankyo Co., Ltd.)

  • Feijie Zhang

    (Stanford University
    Stanford University)

  • King L. Hung

    (Stanford University)

  • Howard Y. Chang

    (Stanford University
    Stanford University)

  • Mark A. Kay

    (Stanford University
    Stanford University)

Abstract

Recombinant adeno-associated viral vectors (rAAVs) are among the most commonly used vehicles for in vivo based gene therapies. However, it is hard to predict which AAV capsid will provide the most robust expression in human subjects due to the observed discordance in vector-mediated transduction between species. In our study, we use a primate specific capsid, AAV-LK03, to demonstrate that the limitation of this capsid towards transduction of mouse cells is unrelated to cell entry and nuclear transport but rather due to depleted histone H3 chemical modifications related to active transcription, namely H3K4me3 and H3K27ac, on the vector DNA itself. A single-amino acid insertion into the AAV-LK03 capsid enables efficient transduction and the accumulation of active-related epigenetic marks on the vector chromatin in mouse without compromising transduction efficiency in human cells. Our study suggests that the capsid protein itself is involved in driving the epigenetic status of the vector genome, most likely during the process of uncoating. Programming viral chromatin states by capsid design may enable facile DNA transduction between vector and host species and ultimately lead to rational selection of AAV capsids for use in humans.

Suggested Citation

  • Adriana Gonzalez-Sandoval & Katja Pekrun & Shinnosuke Tsuji & Feijie Zhang & King L. Hung & Howard Y. Chang & Mark A. Kay, 2023. "The AAV capsid can influence the epigenetic marking of rAAV delivered episomal genomes in a species dependent manner," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38106-3
    DOI: 10.1038/s41467-023-38106-3
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    References listed on IDEAS

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    1. Leszek Lisowski & Allison P. Dane & Kirk Chu & Yue Zhang & Sharon C. Cunningham & Elizabeth M. Wilson & Sean Nygaard & Markus Grompe & Ian E. Alexander & Mark A. Kay, 2014. "Selection and evaluation of clinically relevant AAV variants in a xenograft liver model," Nature, Nature, vol. 506(7488), pages 382-386, February.
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