Gene Transfer by DNA/mannosylated Chitosan Complexes into Mouse Peritoneal Macrophages


Chitosan is a biodegradable and biocompatible polymer and is useful as a non-viral vector for gene delivery. In order to deliver pDNA/chitosan complex into macrophages expressing a mannose receptor, mannose-modified chitosan (man-chitosan) was employed. The cellular uptake of pDNA/man-chitosan complexes through mannose recognition was then observed. The pDNA/man-chitosan complexes showed no significant cytotoxicity in mouse peritoneal macrophages, while pDNA/man-PEI complexes showed strong cytotoxicity. The pDNA/man-chitosan complexes showed much higher transfection efficiency than pDNA/chitosan complexes in mouse peritoneal macrophages. Observation with a confocal laser microscope suggested differences in the cellular uptake mechanism between pDNA/chitosan complexes and pDNA/man-chitosan complexes. Mannose receptor-mediated gene transfer thus enhances the transfection efficiency of pDNA/chitosan complexes.

DOI: 10.1007/s10529-006-9006-x

6 Figures and Tables

Cite this paper

@article{Hashimoto2006GeneTB, title={Gene Transfer by DNA/mannosylated Chitosan Complexes into Mouse Peritoneal Macrophages}, author={Mayu Hashimoto and Minoru Morimoto and Hiroyuki Saimoto and Yoshihiro Shigemasa and Hironobu Yanagie and Masazumi Eriguchi and Toshinori Sato}, journal={Biotechnology Letters}, year={2006}, volume={28}, pages={815-821} }