title: Cell-penetrating DNA-binding protein as a safe and efficient naked DNA delivery carrier in vitro and in vivo.
abstract: Non-viral gene delivery is a safe and suitable alternative to viral vector-mediated delivery to overcome the immunogenicity and tumorigenesis associated with viral vectors. Using the novel, human-origin Hph-1 protein transduction domain that can facilitate the transduction of protein into cells, we developed a new strategy to deliver naked DNA in vitro and in vivo. The new DNA delivery system contains Hph-1-GAL4 DNA-binding domain (DBD) fusion protein and enhanced green fluorescent protein (EGFP) reporter plasmid that includes the five repeats of GAL4 upstream activating sequence (UAS). Hph-1-GAL4-DBD protein formed complex with plasmid DNA through the specific interaction between GAL4-DBD and UAS, and delivered into the cells via the Hph-1-PTD. The pEGFP DNA was successfully delivered by the Hph-1-GAL4 system, and the EGFP was effectively expressed in mammalian cells such as HeLa and Jurkat, as well as in Bright Yellow-2 (BY-2) plant cells. When 10 microg of pEGFP DNA was intranasally administered to mice using Hph-1-GAL4 protein, a high level of EGFP expression was detected throughout the lung tissue for 7 days. These results suggest that an Hph-1-PTD-mediated DNA delivery strategy may be an useful non-viral DNA delivery system for gene therapy and DNA vaccines.
authors.affiliation: Department of Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea.
authors.forename: Eun-Sung
authors.initials: ES
authors.lastname: Kim
authors.forename: Seung-Woo
authors.initials: SW
authors.lastname: Yang
authors.forename: Dong-Ki
authors.initials: DK
authors.lastname: Hong
authors.forename: Woo-Taek
authors.initials: WT
authors.lastname: Kim
authors.forename: Ho-Guen
authors.initials: HG
authors.lastname: Kim
authors.forename: Sang-Kyou
authors.initials: SK
authors.lastname: Lee
mesh_terms: D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism*; D004247:DNA / Q000235:genetics / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D006367:HeLa Cells; D006801:Humans; D063150:Polycomb Repressive Complex 1; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics / Q000378:metabolism*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*; D014161:Transduction, Genetic / Q000379:methods*
chemical_list: D002352:Carrier Proteins; D004268:DNA-Binding Proteins; C052130:GAL4 protein, S cerevisiae; C491239:PHC1 protein, human; D011993:Recombinant Fusion Proteins; D029701:Saccharomyces cerevisiae Proteins; D014157:Transcription Factors; D004247:DNA; D063150:Polycomb Repressive Complex 1