Abstracts Open Access
Copyright ©The Author(s) 2000. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Sep 15, 2000; 6(Suppl3): 56-56
Published online Sep 15, 2000. doi: 10.3748/wjg.v6.iSuppl3.56
Comparison between intravenous and peritoneal route on liver targeted uptake and expression of plasmid delivered by Glyco-poly-L-lysine
Chang-Qing Yang, Ji-Yao Wang, Jian-Jun Liu, Jin-Sheng Guo, Division of Gastroenterology, Zhongshan Hospital, Shanghai Medical University, Shanghai 200032, China
Author contributions: All authors contributed equally to the work.
Supported by National Natural Science Foundation of China, No. 39570336
Correspondence to: Dr. Ji-Yao Wang, Professor, Division of Gastroenterology, Zhongshan Hospital, Shanghai Medical University, Shanghai 200032, China. xhk@shmu.edu.cn
Telephone: 21-64041990-2420 Fax: 21-64833680
Received: November 26, 1999
Revised: April 20, 2000
Accepted: July 10, 2000
Published online: September 15, 2000

Abstract

AIM: To compare the effects of intravenous route and peritoneal route on liver targeted uptake and expression of plasmid delivered by glyco-poly-L-lysine (G-PLL).

METHODS: The plasmid pTM/MMP-1 which could be expressed in eukaryotic cells was bound to the galactose-terminal G-PLL, and then was transferred into Wistar rats by intravenous and intraperitoneal injection respectively. Afterwards the expression and distribution of the plasmid were observed at different time points by in situ hybridization and immunohistochemistry.

RESULTS: The plasmid could be expressed obviously in 24 h after being transferred in vivo by both intravenous and intraperitoneal route. One week later the expression began to decrease, and still could be ovserved three weeks later. Although both the intravenous and intraperitoneal route could deliver the plasmid to liver targetly, the effect of the former was better as compared with that of the latter.

CONCLUSION: Intravenous route was better for liver targeted uptake and expression of G-PLL-bound plasmid than peritoneal route.

Key Words: Intravenous route, Intraperitoneal route, Glyco-poly-L-lysine, Liver targeted uptake, Plasmid



Footnotes

E- Editor: Zhang FF

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