New adenovirus vectors for protein production and gene transfer (original) (raw)

Abstract

Based on two new adenovirus expression cassettes, we have constructed a series of Ad transfer vectors for the overexpression of one or two genes either in a dicistronic configuration or with separate expression cassettes. Inclusion of the green or blue fluorescent protein in the vectors accelerates the generation of adenovirus recombinants and facilitates the functional characterization of genes both in vitro and in vivo by allowing easy quantification of gene transfer and expression. With our optimized tetracycline-regulated promoter (TR5) we have generated recombinant adenoviruses expressing proteins, that are either cytotoxic or which interfere with adenovirus replication, at levels of 10–15% of total cell protein. Proteins that are not cytotoxic can be produced at levels greater than 20% of total cell protein. As well, these levels of protein production can be achieved with or without adenovirus replication. This yield is similar to what can be obtained with our optimized human cytomegalovirus-immediate early promoter-enhancer (CMV5) for constitutive protein expression in non-complementing cell lines. Using the green fluorescent protein as a reporter, we have shown that a pAdCMV5-derived adenovirus vector expresses about 6-fold more protein in complementing 293 cells and about 12-fold more in non- complementing HeLa cells than an adenovirus vector containing the standard cytomegalovirus promoter. Moreover, a red-shifted variant of green fluorescent protein incorporated in one series of vectors was 12-fold more fluorescent than the S65T mutant, making the detection of the reporter protein possible at much lower levels of expression.

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Author notes

  1. Isabelle Vitté-mony
    Present address: Diagnocure Inc., Québec, Québec, Canada
  2. France Couture
    Present address: Centre de Recherche Hospitalier de l'Université Laval, Québec, Québec, Canada
  3. Luc Paquet
    Present address: Exogen Neuroscience Inc., Montré al, Québec, Canada
  4. Pierre Jolicoeur
    Present address: Biophage Inc., 6100 Royalmount Avenue, Montréal, Québec, H4P 2R2, Canada

Authors and Affiliations

  1. Institut de Recherches en Biotechnologie, 6100 Royalmount Avenue, Montréal, Québec, H4P 2R2, Canada
    Bernard Massie, Dick D. Mosser, Maria Koutroumanis, Isabelle Vitté-mony, Linda Lamoureux, France Couture, Luc Paquet, Claire Guilbault, Julie Dionne, Dounia Chahla & Pierre Jolicoeur
  2. Département de Microbiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada, H3C 3J7
    Bernard Massie
  3. Institut du Cancer de Montréal, Centre de Recherche Louis Charles Simard, 1560 Sherbrooke Est, Montréal, Québec, H2L 4M1, Canada
    Claire Guilbault & Yves Langelier

Authors

  1. Bernard Massie
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  2. Dick D. Mosser
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  3. Maria Koutroumanis
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  4. Isabelle Vitté-mony
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  5. Linda Lamoureux
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  6. France Couture
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  7. Luc Paquet
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  8. Claire Guilbault
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  9. Julie Dionne
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  10. Dounia Chahla
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  11. Pierre Jolicoeur
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  12. Yves Langelier
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Corresponding author

Correspondence toBernard Massie.

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Massie, B., Mosser, D.D., Koutroumanis, M. et al. New adenovirus vectors for protein production and gene transfer.Cytotechnology 28, 53–64 (1998). https://doi.org/10.1023/A:1008013211222

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