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Lentiviral Vector Gene Transfer to Porcine Airways
Journal article   Open access   Peer reviewed

Lentiviral Vector Gene Transfer to Porcine Airways

Patrick L Sinn, Ashley L Cooney, Mayumi Oakland, Douglas E Dylla, Tanner J Wallen, Alejandro A Pezzulo, Eugene H Chang and Paul B McCray
Molecular therapy. Nucleic acids, Vol.1(11), pp.e56-e56
11/2012
DOI: 10.1038/mtna.2012.47
PMCID: PMC3511674
PMID: 23187455
url
https://doi.org/10.1038/mtna.2012.47View
Published (Version of record) Open Access

Abstract

In this study, we investigated lentiviral vector development and transduction efficiencies in well-differentiated primary cultures of pig airway epithelia (PAE) and wild-type pigs in vivo . We noted gene transfer efficiencies similar to that observed for human airway epithelia (HAE). Interestingly, feline immunodeficiency virus (FIV)-based vectors transduced immortalized pig cells as well as pig primary cells more efficiently than HIV-1–based vectors. PAE express TRIM5α, a well-characterized species-specific lentiviral restriction factor. We contrasted the restrictive properties of porcine TRIM5α against FIV- and HIV-based vectors using gain and loss of function approaches. We observed no effect on HIV-1 or FIV conferred transgene expression in response to porcine TRIM5α overexpression or knockdown. To evaluate the ability of GP64-FIV to transduce porcine airways in vivo , we delivered vector expressing mCherry to the tracheal lobe of the lung and the ethmoid sinus of 4-week-old pigs. One week later, epithelial cells expressing mCherry were readily detected. Our findings indicate that pseudotyped FIV vectors confer similar tropisms in porcine epithelia as observed in human HAE and provide further support for the selection of GP64 as an appropriate envelope pseudotype for future preclinical gene therapy studies in the porcine model of cystic fibrosis (CF).
lung Methods - Original sinus airway epithelia large animal model cystic fibrosis GP64 gene therapy pig

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