Integration of adeno-associated virus-derived peptides into nonviral vectors to synergistically enhance cellular transfection

Jung Suk Kim, Eunmi Kim, Ji Seon Oh, Jae-Hyung Jang

Research output: Contribution to journalArticle

6 Citations (Scopus)


This study describes a simple, versatile approach for developing a nonviral gene carrier by adopting the highly efficient gene delivery properties of the adeno-associated virus (AAV). Specific viral peptides (r3.45-hepBD) extracted from AAV r3.45, which directly evolved to improve gene delivery capabilities in many cell types, were conjugated onto branched polyethylenimine (PEI) to form hybrid gene carriers. AAV r3.45 carries a sequence insertion (LATQVGQKTA; r3.45) within the heparin-binding domain (LQRGNRQA; hepBD), which ultimately comprises a novel sequence (LQRGNLATQVGQKTARQA; r3.45-hepBD) on the capsid. This sequence is hypothesized to be a crucial cue to enhance gene delivery efficiency. Consequently, the intimate interactions of the conjugated r3.45-hepBD with the glycosaminoglycans, including chondroitin sulfate, resulted in significantly enhanced cellular transfection of DNA/PEI-r3.45-hepBD complexes. The successful establishment of a nonviral system that is built with novel peptides will provide a powerful means for developing a substantial number of gene therapy applications.

Original languageEnglish
Pages (from-to)2136-2145
Number of pages10
Issue number7
Publication statusPublished - 2013 Jul 8


All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Materials Chemistry
  • Polymers and Plastics
  • Biomaterials

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