Abstract
Human serum albumin (HSA)-coated liposomal formulations were synthesized and evaluated for the delivery of antisense oligodeoxyribonucleotide (ODN) G3139 in KB human oral carcinoma cells. Liposomes composed of dimethyldioctadecyl ammonium bromide/egg phosphatidylcholine/α-tocopheryl polyethylene glycol 1000 succinate (58:40:2 molar ratio) complexed with G3139 and coated with HSA were investigated for Bcl-2 downregulating activity. Cellular uptake of HSA-coated liposome-ODN complexes was more efficient than the uncoated liposome-ODN complexes. Treatment of the cells with HSA-coated liposome-ODN complexes resulted in efficient Bcl-2 mRNA downregulation that was approximately 3-fold greater than with uncoated liposomes (p < 0.05) and 6-fold greater than with free ODN. The transfection efficiency of liposome-ODN complexes coated with HSA was dependent on the concentration of HSA used and on the contents of α-helix and β-strand in HSA. HSA-coated liposomes are effective delivery vehicles for antisense ODN.
Original language | English (US) |
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Pages (from-to) | 1848-1855 |
Number of pages | 8 |
Journal | Molecular pharmaceutics |
Volume | 6 |
Issue number | 6 |
DOIs | |
State | Published - Dec 7 2009 |
Externally published | Yes |
Keywords
- Antisense oligonucleotide
- Bcl-2
- Cancer
- Drug delivery
- G3139
- Human serum albumin
- Lipoplex
- Liposomes