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Updated: Oct 15, 2026
Transgene Expression in Cultured Cells Using Unpurified Recombinant Adeno-Associated Viral Vectors
Published on: October 20, 2023
Site-specific integration of a transgene mediated by a hybrid adenovirus/adeno-associated virus vector using the
T Ueno1, H Matsumura, K Tanaka
1Biotechnology Research Laboratories, Takara Shuzo Company, Ltd., Shiga, 520-2193, Japan.
Abstract:
As vectors, adenoviruses (Ads) have many attractive advantages for in vivo gene therapy. However, Ads do not usually integrate into the host genome and gene expression is, thus, transient. Adeno-associated virus (AAV) integrates into a specific locus (AAVS1) on the human host's chromosome 19, while conventional recombinant AAV (rAAV) vectors do not possess this property because such vectors lack the rep gene. AAV vectors carrying the rep gene do not have enough space for insertion of a transgene. We have constructed a hybrid adenovirus/adeno-associated virus (Ad/AAV) vector which has the advantages of both Ads and AAVs. Given that the rep gene products inhibit propagation of Ads, we used the Cre/loxP-expression-switching system to regulate the expression of the rep gene. The Ad/AAV vector easily propagates, can efficiently infect a broad range of cell types, and can integrate into a specific locus on host chromosomes.
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