Cited by 78Virus-based gene therapy researchRNA Interference and Gene DeliveryNeurogenetic and Muscular Disorders Research

Terminal differentiation of cardiac and skeletal myocytes induces permissivity to AAV transduction by relieving inhibition imposed by DNA damage response proteins

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Lovric, Jasmina, Mano, Miguel, Zentilin, Lorena, Eulalio, Ana, Zacchigna, Serena, Giacca, Mauro·2012·Molecular Therapy

Abstract

Gene therapy vectors based on the adeno-associated virus (AAV) are extremely efficient for gene transfer into post-mitotic cells of heart, muscle, brain, and retina. The reason for their exquisite tropism for these cells has long remained elusive. Here, we show that upon terminal differentiation, cardiac and skeletal myocytes downregulate proteins of the DNA damage response (DDR) and that this markedly induces permissivity to AAV transduction. We observed that expression of members of the MRN complex (Mre11, Rad50, Nbs1), which bind the incoming AAV genomes, faded in cardiomyocytes at ~2 weeks after birth, as well as upon myoblast differentiation in vitro; in both cases, withdrawal of the cells from the cell cycle coincided with increased AAV permissivity. Treatment of proliferating cells with short-interfering RNAs (siRNAs) against the MRN proteins, or with microRNA-24, which is normally upregulated upon terminal differentiation and negatively controls the Nbs1 levels, significantly increased permissivity to AAV transduction. Consistently, delivery of these small RNAs to the juvenile liver concomitant with AAV markedly improved in vivo hepatocyte transduction. Collectively, these findings support the conclusion that cellular DDR proteins inhibit AAV transduction and that terminal cell differentiation relieves this restriction.

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Crossref · 10.1038/mt.2012.144

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  1. [29]Schwartz RA Palacios JA Cassell GD Adam S Giacca M Weitzman MD The Mre11/Rad50/Nbs1 complex limits adeno-associated virus transduction and replication J Virol 2007 in press PMC2169118 17898048

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Authors
Lovric, J., Mano, M., Zentilin, L., Eulalio, A., Zacchigna, S., & Giacca, M.
Affiliations
International Centre for Genetic Engineering and Biotechnology (IT)
Corresponding author
Giacca, Mauro
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2012-11
Volume
20
Issue
11
Pages
2087-2097
ISSN
1525-0016 (ISSN-L)
OpenAlex
W2162955406
Cited by
77
References
49
Citations by year
2026: 2 · 2025: 5 · 2024: 9 · 2023: 6 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 2 · 2018: 3 · 2017: 7 · 2016: 9 · 2015: 17 · 2014: 3 · 2013: 4
FWCI
4.63
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ArTS Archivio della ricerca di Trieste (University of Trieste https://www.units.it/) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
Defense Acquisition Program Administration
Topics
  • 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
  • Health Sciences › Medicine › Genetics › Neurogenetic and Muscular Disorders Research
Keywords
adeno-associated virus, AAV transduction, DNA damage response, terminal differentiation, cardiomyocytes, skeletal myocytes, MRN complex, MRE11, RAD50, NBS1, microRNA-24, hepatocyte transduction, siRNA knockdown, postmitotic cells, gene therapy vectors
MeSH terms
MRE11 Homologue Protein, Dependovirus, Animals, beta-Galactosidase, Cell Cycle, Cell Differentiation, DNA Damage, DNA-Binding Proteins, Heart, HeLa Cells, Humans, Liver, Nuclear Proteins, Transduction, Genetic, Down-Regulation, Acid Anhydride Hydrolases, Muscle Fibers, Skeletal, Gene Expression Regulation, Developmental, ATP-Binding Cassette Transporters, Cell Cycle Proteins, Myocytes, Cardiac, RNA, Small Interfering, MicroRNAs, DNA Repair Enzymes, Cell Proliferation, Mice, Rats, Gene Knockdown Techniques

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