A Hybrid Vector for Ligand-Directed Tumor Targeting and Molecular Imaging

Amin Hajitou, Martin Trepel, Caroline E. Lilley, Suren Soghomonyan, Mian M. Alauddin, Frank C. Marini, Bradley H. Restel, Michael G. Ozawa, Catherine A. Moya, Roberto Rangel, Yan Sun, Karim Zaoui, Manfred Schmidt, Christof von Kalle, Matthew D. Weitzman, Juri G. Gelovani, Renata Pasqualini, Wadih Arap

Research output: Contribution to journalArticlepeer-review

236 Scopus citations

Abstract

Merging tumor targeting and molecular-genetic imaging into an integrated platform is limited by lack of strategies to enable systemic yet ligand-directed delivery and imaging of specific transgenes. Many eukaryotic viruses serve for transgene delivery but require elimination of native tropism for mammalian cells; in contrast, prokaryotic viruses can be adapted to bind to mammalian receptors but are otherwise poor vehicles. Here we introduce a system containing cis-elements from adeno-associated virus (AAV) and single-stranded bacteriophage. Our AAV/phage (AAVP) prototype targets an integrin. We show that AAVP provides superior tumor transduction over phage and that incorporation of inverted terminal repeats is associated with improved fate of the delivered transgene. Moreover, we show that the temporal dynamics and spatial heterogeneity of gene expression mediated by targeted AAVP can be monitored by positron emission tomography. This new class of targeted hybrid viral particles will enable a wide range of applications in biology and medicine.

Original languageEnglish (US)
Pages (from-to)385-398
Number of pages14
JournalCell
Volume125
Issue number2
DOIs
StatePublished - Apr 21 2006

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology

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