Journal article
N-Glycan Targeted Gene Delivery to the Dendritic Cell SIGN Receptor
Bioconjugate chemistry, Vol.21(8), pp.1479-1485
08/18/2010
DOI: 10.1021/bc1000824
PMCID: PMC5501274
PMID: 20715853
Abstract
A novel nonviral gene delivery vector composed of a high-mannose N-glycan conjugated to a polyacridine peptide was prepared. The glycopeptide was designed to bind to plasmid DNA by a combination of polyintercalation and ionic binding, and to the DC-SIGN (dendritic cell-specific intracellular adhesion molecule-3 grabbing nonintegrin) receptor expressed on CHO cells by recognition of the high-mannose N-glycan. The glycopeptide conjugate was prepared by purification of a high-mannose N-glycan from affinity fractionated soybean agglutinin (SBA). The SBA was proteolyzed to release the N-glycan which was then modified on its N-terminus with Tyr and a propionate maleimide. A DNA binding polyacridine peptide, Cys-(Acr-Lys)4, was prepared by solid-phase peptide synthesis using Fmoc-Lys(Acr), then conjugated to the maleimide on the N-glycan to produce a glycopeptide. The glycopeptide bound to DNA with high affinity as determined by fluorophore displacement assay and DNA band shift on agarose gel. When bound to Cy5 labeled DNA, the glycopeptide mediated specific uptake in DC-SIGN CHO (+) cells as determined by FACS analysis. In vitro gene transfer studies established that the glycopeptide increased the specificity of gene transfer in DC-SIGN CHO (+) cells 100-fold relative to CHO (−) cells. These studies suggest that a high-mannose N-glycan conjugated to a polyacridine peptide may also facilitate receptor mediated gene delivery in dendritic cells and thereby find utility in the delivery of DNA vaccines.
Details
- Title: Subtitle
- N-Glycan Targeted Gene Delivery to the Dendritic Cell SIGN Receptor
- Creators
- Kevin AndersonChristian FernandezKevin G Rice
- Resource Type
- Journal article
- Publication Details
- Bioconjugate chemistry, Vol.21(8), pp.1479-1485
- DOI
- 10.1021/bc1000824
- PMID
- 20715853
- PMCID
- PMC5501274
- NLM abbreviation
- Bioconjug Chem
- ISSN
- 1043-1802
- eISSN
- 1520-4812
- Publisher
- American Chemical Society
- Alternative title
- Gene Delivery to the DC-SIGN Receptor
- Language
- English
- Date published
- 08/18/2010
- Academic Unit
- Pharmaceutical Sciences and Experimental Therapeutics; Craniofacial Anomalies Research Center; Medicinal and Natural Products Chemistry
- Record Identifier
- 9984065309902771
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