Abstract:
:We have previously shown that recombinant Sendai virus (SeV) vector, derived from murine parainfluenza virus, is one of the most efficient vectors for airway gene transfer. We have also shown that SeV-mediated transfection on second administration, although reduced by 60% when compared with levels achieved after a single dose, is still high because of the efficient transfection achieved by SeV vector in murine airways. Here, we show that these levels further decrease on subsequent doses. In addition, we validated SeV vector repeat administration in a non-natural host model, the sheep. As part of these studies we first assessed viral stability in a Pari LC Plus nebuliser, a polyethylene catheter (PEC) and the Trudell AeroProbe. We also compared the distribution of gene expression after PEC and Trudell AeroProbe administration and quantified virus shedding after sheep transduction. In addition, we show that bronchial brushings and biopsies, collected in anaesthetized sheep, can be used to assess SeV-mediated gene expression over time. Similar to mice, gene expression in sheep was transient and had returned to baseline values by day 14. In conclusion, the SeV vector should be strongly considered for lung-related applications requiring a single administration of the vector even though it might not be suitable for diseases requiring repeat administration.
journal_name
Gene Therjournal_title
Gene therapyauthors
Griesenbach U,McLachlan G,Owaki T,Somerton L,Shu T,Baker A,Tennant P,Gordon C,Vrettou C,Baker E,Collie DD,Hasegawa M,Alton EWdoi
10.1038/gt.2010.131subject
Has Abstractpub_date
2011-02-01 00:00:00pages
182-8issue
2eissn
0969-7128issn
1476-5462pii
gt2010131journal_volume
18pub_type
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