Document Detail

A preliminary investigation of modified alginates as a matrix for gene transfection in a HeLa cell model.
MedLine Citation:
PMID:  11852701     Owner:  NLM     Status:  MEDLINE    
Previous reports have demonstrated the effectiveness of chitosan as a transfection agent. These studies have noted the importance of polysaccharide backbone interactions with the cell surface as well as cationic groups in the transfection process. The present study focuses upon the potential utility of another polysaccharide hydrogel, alginic acid, as a transfection agent. Alginic acid was modified by carbodiimide-mediated linkage of several heterocyclic and aromatic amines to the carboxyl group of the alginate, giving the alginate polycationic characteristics through which binding to nucleic acids could be facilitated. The amines used for this modification include diaminoacridine, thionin, basic fuchsin, acridine yellow, and diaminomethyltriazine. Of all the conjugates tested, basic fuchsin-modified alginate produced the greatest increase in the transfection of a plasmid coding for beta-galactosidase into HeLa cells. These studies demonstrate that other polysaccharide hydrogels can be used as transfection agents, and the structural orientation of the cationic spacer arm is crucial for effective transfection.
Kiran Padmanabhan; Timothy J Smith
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pharmaceutical development and technology     Volume:  7     ISSN:  1083-7450     ISO Abbreviation:  Pharm Dev Technol     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-02-20     Completed Date:  2002-09-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9610932     Medline TA:  Pharm Dev Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  97-101     Citation Subset:  IM    
Department of Physiology and Pharmacology, University of the Pacific School of Pharmacy and Health Sciences, Stockton, CA 95211, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Alginates / pharmacology*
Hela Cells
Microscopy, Electron, Scanning
Transfection / methods*
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Estimation of initial dissolution rate of drug substance by thermal analysis: application for carbam...
Next Document:  Chilaiditi syndrome and recurrent colonic volvulus: a case report.