Abstract |
The aim of this study was to examine the interaction of soybean-derived sterylglucoside (SG) with the human hepatoblastoma cell line HepG2 with regard to the penetration-enhancing effect of beta-sitosterol glucoside (Sit-G) to clarify the accumulation of SG-containing liposomes (SG- liposomes) to the liver in vivo. The approach was based on measurement of the association of SG- liposomes labeled with 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate (Dil) in terms of asialoglycoprotein receptor ( ASGP-R)-mediated endocytosis, affinity of Sit-G using lAsys and the association of FITC-dextran 4400 (FD-4) increased by Sit-G with the cells. The association of SG- liposomes was decreased by addition of asialofetuin, suggesting that SG- liposomes might be taken up via ASGP-R. Sit-G showed higher affinity with HepG2 cells than HeLa cells, and enhanced the association of FD-4 depending on the incubation time and Sit-G concentrations. Significant positive correlations were found between Sit-G and FD-4 association with the cells, indicating that Sit-G enhanced the drug penetration by distribution in cell membranes. The high degree of liver association of SG- liposomes in vivo might be related to recognition of glucose residues of SG by ASGP-R and to the high affinity and penetration-enhancing effect of Sit-G with hepatocytes.
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Authors | Kumi Kawano, Kouji Nakamura, Kyoko Hayashi, Tsuneji Nagai, Kozo Takayama, Yoshie Maitani |
Journal | Biological & pharmaceutical bulletin
(Biol Pharm Bull)
Vol. 25
Issue 6
Pg. 766-70
(Jun 2002)
ISSN: 0918-6158 [Print] Japan |
PMID | 12081144
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Asialoglycoprotein Receptor
- Asialoglycoproteins
- Excipients
- Fetuins
- Liposomes
- Sitosterols
- alpha-Fetoproteins
- asialofetuin
- Fluorescein-5-isothiocyanate
- lyoniside
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Topics |
- Asialoglycoprotein Receptor
(metabolism)
- Asialoglycoproteins
(metabolism)
- Binding, Competitive
(drug effects)
- Carcinoma, Hepatocellular
(metabolism)
- Cell Membrane
(drug effects, metabolism)
- Cell Membrane Permeability
(drug effects)
- Excipients
(metabolism)
- Fetuins
- Fluorescein-5-isothiocyanate
- Humans
- Liposomes
(metabolism)
- Liver
(metabolism)
- Liver Neoplasms
(metabolism)
- Sitosterols
(metabolism)
- Tumor Cells, Cultured
- alpha-Fetoproteins
(metabolism)
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