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Author Thomas, Jane Joy ♦ Rekha, M. R. ♦ Sharma, C. P.
Source Sree Chitra Tirunal Institute for Medical Sciences & Technology
Content type Text
Publisher International Journal of Pharmaceutics
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Pharmacology and therapeutics
Subject Domain (in MeSH) Therapeutics ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment
Subject Keyword Drug Delivery
Abstract Non-viral gene carriers have attracted great interests for their unique properties. Cationic polymers have been in focus nowadays. Dextran is one of the most widely studied polymer in terms of gene therapy and in vivo disposition. But its applications are limited by its own drawbacks. To overcome the drawback, we have modified dextran using glycidyltrimethylammonium chloride (GTAC) bearing cationic groups. Nanoplexes were prepared using the derivative and calf thymus DNA (ctDNA) by reducing the surface charge and size of ctDNA. Complexation and stability of the nanoplex was proved using agarose gel electrophoresis and by Ethidium bromide (EtBr) displacement assay. Acid base titration studies were done to determine its buffering capacity. Derivatization was confirmed using NMR. Protection of ctDNA from nuclease digestion was evaluated. Stability of the nanoplex towards plasma components was analyzed. Its interactions with blood components were tested by haemolysis and aggregation studies. In vitro cytotoxicity studies have been done to investigate the effect of nanoplex on HepG2 cells by MU assay. This derivative has been proved to be feasible in transfection. The above investigations prove the capability of dextran modified with GTAC as a promising non-viral and haemocompatible gene delivery agent. (C) 2010 Elsevier B.V. All rights reserved.
Education Level UG and PG
Learning Resource Type Article
Educational Framework Medical Council of India (MCI)
Journal International Journal of Pharmaceutics
Volume Number 389
Issue Number 40910
Page Count 12
Starting Page 195
Ending Page 206