IgE-mediated allergen gene vaccine platform targeting human antigen-presenting cells through the high-affinity IgE receptor.
J Allergy Clin Immunol
; 124(1): 108-13, 2009 Jul.
Article
en En
| MEDLINE
| ID: mdl-19423156
ABSTRACT
BACKGROUND:
Treatment of IgE-mediated food allergy with standard protein-based allergen immunotherapy has proved both unsuccessful and hazardous. Allergen gene vaccination represents a promising alternative, but difficulties in gene targeting and expression in antigen-presenting cells represent a major limitation for efficient gene vaccination.OBJECTIVE:
We sought to construct a genetically engineered human epsilon-polylysine (EPL) fusion protein that binds allergen gene expression systems and targets the gene vaccine complex to antigen-presenting cells through the interaction of EPL and the high-affinity receptor for IgE for efficient allergen gene vaccination.METHODS:
Genetic engineering was used to design and produce the EPL fusion gene, consisting of the human CHepsilon2-4 linked to 55 lysine residues, and the conventional approaches were used to characterize the biologic features of EPL.RESULTS:
EPL was assembled as functional dimers and capable of binding DNA plasmids in both an EPL protein and plasmid DNA concentration-dependent manner. EPL targeted plasmid DNA to the high-affinity receptor for IgE on cell surfaces and increased the model gene uptake/expression. The EPL-DNA complexes were shown not to trigger mast cell degranulation.CONCLUSION:
EPL is able to function as a gene carrier system to target allergen gene to the high-affinity receptor for IgE-expressing cells through ligand receptor-mediated interactions.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Inmunoglobulina E
/
Desensibilización Inmunológica
/
Sistemas de Liberación de Medicamentos
/
Receptores de IgE
/
Vacunas de ADN
/
Células Presentadoras de Antígenos
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Allergy Clin Immunol
Año:
2009
Tipo del documento:
Article
País de afiliación:
Estados Unidos