Abstract
Here we investigate the immunogenicity of a combination adjuvant comprising emulsified fine particles (namely PELC) together with LD-indolicidin, a peptiomimetic stereoisomer of the bovine neutrophil peptide indolicidin. We demonstrated that intranasal vaccination with either PELC/LD-indolicidin or Alum enhances protective influenza-specific serological immunity in mice; however, the adjuvant potency of Alum was rather reduced when the mice vaccinated orally with formulated influenza vaccines. The information gathered from this study will enhance our effort in the formulation design as well as the optimization of alternative administration routes for prophylactic vaccines against emerging infectious diseases, in particular pandemic influenza.
Keywords:
Combination adjuvant; Host defense peptides; Mucosal vaccine; Vaccine delivery systems.
Copyright © 2016 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
MeSH terms
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Adjuvants, Immunologic / administration & dosage
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Adjuvants, Immunologic / pharmacology*
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Administration, Intranasal
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Administration, Oral
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Alum Compounds / administration & dosage
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Alum Compounds / pharmacology
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Animals
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Antibodies, Viral / blood
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Antimicrobial Cationic Peptides / administration & dosage
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Antimicrobial Cationic Peptides / pharmacology*
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Female
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Influenza Vaccines / administration & dosage
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Influenza Vaccines / immunology*
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Mice, Inbred BALB C
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Orthomyxoviridae / immunology*
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Polyesters / administration & dosage
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Polyesters / pharmacology*
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Polyethylene Glycols / administration & dosage
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Polyethylene Glycols / pharmacology*
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Squalene / administration & dosage
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Squalene / pharmacology*
Substances
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Adjuvants, Immunologic
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Alum Compounds
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Antibodies, Viral
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Antimicrobial Cationic Peptides
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Influenza Vaccines
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Polyesters
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poly(ethylene glycol)-b-poly(lactide-co-epsilon-caprolactone)
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indolicidin
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aluminum sulfate
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Polyethylene Glycols
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Squalene