PUBLICATION
Specific and Efficient Uptake of Surfactant-Free Poly(Lactic Acid) Nanovaccine Vehicles by Mucosal Dendritic Cells in Adult Zebrafish after Bath Immersion
- Authors
- Rességuier, J., Delaune, E., Coolen, A.L., Levraud, J.P., Boudinot, P., Le Guellec, D., Verrier, B.
- ID
- ZDB-PUB-170316-9
- Date
- 2017
- Source
- Frontiers in immunology 8: 190 (Journal)
- Registered Authors
- Delaune, Emilie, Le Guellec, Dominique, Levraud, Jean-Pierre
- Keywords
- biodistribution, dendritic cells, imaging flow cytometry, mucosal delivery, poly(d,l-lactic acid) nanoparticles, surfactant free, vaccines carrier, zebrafish
- MeSH Terms
- none
- PubMed
- 28289416 Full text @ Front Immunol
Citation
Rességuier, J., Delaune, E., Coolen, A.L., Levraud, J.P., Boudinot, P., Le Guellec, D., Verrier, B. (2017) Specific and Efficient Uptake of Surfactant-Free Poly(Lactic Acid) Nanovaccine Vehicles by Mucosal Dendritic Cells in Adult Zebrafish after Bath Immersion. Frontiers in immunology. 8:190.
Abstract
Activation of mucosal immunity is a key milestone for next-generation vaccine development. Biocompatible polymer-based nanoparticles (NPs) are promising vectors and adjuvants for mucosal vaccination. However, their in vivo uptake by mucosae and their biodistribution in antigen-presenting cells (APCs) need to be better understood to optimize mucosal nanovaccine designs. Here, we assessed if APCs are efficiently targeted in a spontaneous manner by surfactant-free poly(lactic acid) nanoparticles (PLA-NPs) after mucosal administration. Combining histology and flow imaging approaches, we describe and quantify the mucosal uptake of 200 nm PLA-NPs in adult zebrafish. Following bath administration, PLA-NPs penetrated and crossed epithelial barriers from all exposed mucosae. In mucosae, PLA-NPs accumulated in APCs, which were identified as dendritic cells (DCs), macrophages, and IgZ+ B cells in gills and skin. PLA-NP uptake by phagocytes was specific to these cell types, as PLA-NPs were not detected in neutrophils. Importantly, quantitative analyses in gills revealed that DCs take up PLA-NPs with specifically high efficiency. This study shows that surfactant-free PLA-NPs, which display optimal biocompatibility, can spontaneously target DCs with high efficiency in vivo following mucosal administration, and highlights PLA-NPs as powerful platforms for mucosal vaccine delivery in the medical and veterinary fields, and particularly in aquaculture.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping