Improved efficiency of gene transfer to the transplanted lung by retrograde vascular gene delivery

Anders Jeppsson, Carlo Pellegrini, Ronald Lee, Timothy O'Brien, Virginia M. Miller, Henry D. Tazelaar, C. G.A. McGregor

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Experiments were designed to evaluate the efficiency of antegrade compared to retrograde vascular gene transfection of donor lungs used for transplantation. Rat donor lungs (n = 5/group) were transduced with an adenoviral vector encoding for β-galactosidase (AdβGal), either antegrade in the pulmonary artery (Group A, 3 x 108 pfu, Group B, 3 x 109 pfu) or retrograde into the pulmonary vein (Group C, 3 x 108 pfu), immediately after pneumoplegia. After storage at 4°C for 1 h, the transduced lungs were transplanted orthotopically in syngeneic animals. The lungs were assessed for transgene expression by ELISA and X-Gal-staining at day 7 after operation. Inflammation was graded based on the extent of inflammatory cell infiltration. Transgene expression was similar between Groups A (1.7 ± 0.7 ng/mg protein) and B (2.1 ± 1.0 ng/mg protein). With retrograde delivery, there was a four-fold (8.3 ± 2.6 ng/mg protein) increase (P < 0.05) in transgene expression compared to either group A or B. In all groups, pneumocytes were transduced most frequently. The degree of inflammation correlated positively with the extent of transgene expression (r = 0.75, P < 0.01). The efficiency of vascular gene delivery to transplanted lungs can be improved by retrograde delivery of the vector via the pulmonary vein. Transgene expression predominates in pneumocytes following both antegrade and retrograde delivery. The severity of inflammation in the transplanted lung appears to correlate with the extent of transgene expression.

Original languageEnglish (US)
Pages (from-to)241-246
Number of pages6
JournalTransplant International
Volume13
Issue number4
DOIs
StatePublished - Oct 3 2000

Keywords

  • Gene transfer
  • Lung transplantation
  • β-galactosidase

ASJC Scopus subject areas

  • Transplantation

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  • Cite this

    Jeppsson, A., Pellegrini, C., Lee, R., O'Brien, T., Miller, V. M., Tazelaar, H. D., & McGregor, C. G. A. (2000). Improved efficiency of gene transfer to the transplanted lung by retrograde vascular gene delivery. Transplant International, 13(4), 241-246. https://doi.org/10.1007/s001470050697