Cited by 155Virus-based gene therapy researchRNA Interference and Gene DeliveryViral Infectious Diseases and Gene Expression in Insects

Production of adeno-associated virus vectors for in vitro and in vivo applications

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Kimura, Toyokazu, Ferran, Beatriz, Tsukahara, Yuko, Shang, Qifan, Desai, Suveer, Fedoce, Alessandra, Pimentel, David Richard, Luptak, Ivan +4 more·2019·Scientific Reports

Abstract

Delivering and expressing a gene of interest in cells or living animals has become a pivotal technique in biomedical research and gene therapy. Among viral delivery systems, adeno-associated viruses (AAVs) are relatively safe and demonstrate high gene transfer efficiency, low immunogenicity, stable long-term expression, and selective tissue tropism. Combined with modern gene technologies, such as cell-specific promoters, the Cre/lox system, and genome editing, AAVs represent a practical, rapid, and economical alternative to conditional knockout and transgenic mouse models. However, major obstacles remain for widespread AAV utilization, such as impractical purification strategies and low viral quantities. Here, we report an improved protocol to produce serotype-independent purified AAVs economically. Using a helper-free AAV system, we purified AAVs from HEK293T cell lysates and medium by polyethylene glycol precipitation with subsequent aqueous two-phase partitioning. Furthermore, we then implemented an iodixanol gradient purification, which resulted in preparations with purities adequate for in vivo use. Of note, we achieved titers of 10 10 –10 11 viral genome copies per µl with a typical production volume of up to 1 ml while requiring five times less than the usual number of HEK293T cells used in standard protocols. For proof of concept, we verified in vivo transduction via Western blot, qPCR, luminescence, and immunohistochemistry. AAVs coding for glutaredoxin-1 (Glrx) shRNA successfully inhibited Glrx expression by ~66% in the liver and skeletal muscle. Our study provides an improved protocol for a more economical and efficient purified AAV preparation.

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Authors
Kimura, T., Ferran, B., Tsukahara, Y., Shang, Q., Desai, S., Fedoce, A., Pimentel, D. R., Luptak, I., Adachi, T., Ido, Y., Matsui, R., & Bachschmid, M. M.
Affiliations
  • Boston University (US)
  • National Defense Medical College Hospital (JP)
Corresponding author
  • Matsui, Reiko
  • Bachschmid, Markus Michael
Venue
Scientific Reports
Published
2019-09-19
Volume
9
Issue
1
Pages
13601-13601
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2973390883
Cited by
155
References
70
Citations by year
2026: 18 · 2025: 30 · 2024: 27 · 2023: 27 · 2022: 23 · 2021: 20 · 2020: 10
FWCI
7.98
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • American Heart Association (15FTF25890062, 16GRNT27660006)
  • School of Medicine, Boston University (1UL1TR001430)
  • National Defense Medical College
  • Ministry of Education, Culture, Sports, Science and Technology
  • Ministry of Defense
  • National Institutes of Health (NIH T32, 15FTF25890062, UL1TR001430)
  • Japan Society for the Promotion of Science (18H02815)
  • National Institute on Aging (R03AG051857)
  • National Heart, Lung, and Blood Institute (T32HL007224, R01HL133013)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK103750)
  • National Center for Advancing Translational Sciences
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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Viral Infectious Diseases and Gene Expression in Insects
Keywords
adeno-associated virus vectors, AAV production, HEK293T cells, polyethylene glycol precipitation, aqueous two-phase extraction, viral titer, in vivo transduction, glutaredoxin 1, shRNA, liver, skeletal muscle, gene therapy
MeSH terms
Proof of Concept Study, Dependovirus, Animals, Cell Line, Genetic Vectors, Humans, Liver, Male, Polyethylenes, Chemical Precipitation, Transduction, Genetic, Down-Regulation, Muscle, Skeletal, Viral Load, RNA, Small Interfering, Glutaredoxins, HEK293 Cells

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