Receptor-mediated gene delivery by folate-PEG-baculovirus in vitro
| Autor: | Myung-Haing Cho, Yeon Ho Je, Jae-Young Choi, Hu-Lin Jiang, Chong-Su Cho, You-Kyoung Kim, Rohidas Arote, Mi-Kyong Yoo |
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| Rok vydání: | 2007 |
| Předmět: |
Skin Neoplasms
Genetic enhancement Genetic Vectors Receptors Cell Surface Bioengineering Biology Gene delivery Transfection Applied Microbiology and Biotechnology Polyethylene Glycols Transduction (genetics) Folic Acid Cell Line Tumor Humans Folate Receptors GPI-Anchored Genetic transfer Gene targeting DNA General Medicine Receptor-mediated endocytosis Molecular biology Endocytosis Folate receptor Gene Targeting Carrier Proteins Baculoviridae Biotechnology |
| Zdroj: | Journal of Biotechnology. 131:353-361 |
| ISSN: | 0168-1656 |
| Popis: | Gene delivery using baculovirus is a promising approach for efficient and safe gene therapy compared with animal viruses. However, obstacles of baculovirus-mediated gene delivery include inactivation of baculovirus in human serum and whole blood and the lack of specificity in targeted delivery. Therefore, chemical modification of the viral surface with poly(ethylene glycol) (PEG) and a targeting ligand, such as folate, is necessary for stable and targeted gene delivery via receptor-mediated endocytosis. In this study, folate-PEG (F-PEG) was attached on the baculovirus surface to obtain efficiency and specificity of gene delivery. Composition of F-PEG and degree of capsid modification with F-PEG was determined using (1)H nuclear magnetic resonance ((1)H NMR) and fluorescamine assay, respectively. Folate-PEG-Baculovirus (F-P-Bac) showed enhanced transduction efficiency compared to PEG-Baculovirus (P-Bac) in folate receptor (FR)-positive KB cells. Moreover, this enhanced transduction was not observed in FR-negative HepG2 cells. Presence of free folate in the medium blocked the transduction of F-P-Bac, whereas transduction efficiency of P-Bac in the presence or absence of free folate was not changed significantly. This study thus suggests that F-P-Bac can be used as a receptor-mediated gene delivery system. |
| Databáze: | OpenAIRE |
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