RRC ID 42813
Author Nishiyama N, Arnida, Jang WD, Date K, Miyata K, Kataoka K.
Title Photochemical enhancement of transgene expression by polymeric micelles incorporating plasmid DNA and dendrimer-based photosensitizer.
Journal J Drug Target
Abstract The development of synthetic gene carriers has recently received much attention; however, they might lack the ability to control the transgene expression. The use of external stimuli for enhancement of the transgene expression may be a promising approach for the site-directed transfection in vivo. In this regard, a new technology of "photochemical internalization (PCI)" has recently been reported, in which the endosomal escape of gene carriers is assisted by photodamage of the endosomal membrane with co-incubating photosensitizers. To apply this technology for systemic gene delivery, the development of appropriate carrier systems for both the plasmid DNA (pDNA) and photosensitizer is of crucial importance. Also, the photocytotoxicity accompanied by the photochemical enhancement of the gene expression may need to be reduced. In this study, the combinational formulation of polymeric micelles incorporating pDNA and a dendrimer-based photosensitizer (DP) (dendrimer phthalocyanine (DPc)) was applied in the PCI-mediated transfection in vitro and then, estimating its potential utility for in vivo applications. The PCI using the polymeric micelle system achieved a remarkable photochemical enhancement of the transgene expression while maintaining an approximate 80% cell viability over a wide range of the DPc concentrations and light doses. Thus, this system may be promising for in vivo PCI-mediated gene delivery.
Volume 14(6)
Pages 413-24
Published 2006-7-1
DOI 10.1080/10611860600834508
PII PMN3432N4XG6525H
PMID 17092841
MeSH Cell Survival / drug effects Cell Survival / genetics Cell Survival / radiation effects Dendrimers / chemistry* Dendrimers / pharmacology Dose-Response Relationship, Drug Dose-Response Relationship, Radiation Drug Delivery Systems / methods Gene Expression / drug effects Gene Expression / genetics Gene Expression / radiation effects HeLa Cells Humans Indoles / chemistry Indoles / pharmacology Light Micelles* Models, Biological Molecular Structure Photosensitizing Agents / chemistry* Photosensitizing Agents / pharmacology Plasmids / chemistry Plasmids / genetics* Polymers / chemistry Technology, Pharmaceutical / methods Transfection / methods Transgenes / genetics*
IF 3.38
Times Cited 34
Human and Animal Cells