Activation of antigen-specific T cell-responses by mannan-decorated PLGA nanoparticles.

Abstract:

PURPOSE:Mannosylation of vaccines is a promising strategy to selectively target vaccine antigens to the mannose receptor expressed on dendritic cells (DCs). The purpose of this study was to investigate the effect of mannan (MN) chemically conjugated to poly(D, L-lactide-co-glycolic acid) (PLGA) nanoparticles (NPs) on antigen-specific T-cell responses elicited by a model antigen (ovalbumin, OVA) loaded in PLGA-NPs. METHODS:In vitro T-cell proliferation assay was done to assess the ability of DCs treated with OVA-NPs (±MN decoration) to induce antigen-specific T-cell activation. The efficacy of this vaccination strategy was further evaluated in vivo, where T-cell proliferation was performed to evaluate activation of T-cell responses in lymph nodes and spleens isolated from the vaccinated mice. RESULTS:Our results demonstrate that MN-decorated antigen-loaded PLGA-NPs simultaneously enhanced antigen-specific CD4+ and CD8+ T-cell responses compared to non-decorated NPs. CONCLUSIONS:MN decoration of PLGA-NPs is a promising strategy for enhancing antigen-specific T-cell responses.

journal_name

Pharm Res

journal_title

Pharmaceutical research

authors

Hamdy S,Haddadi A,Shayeganpour A,Samuel J,Lavasanifar A

doi

10.1007/s11095-011-0459-9

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

2288-301

issue

9

eissn

0724-8741

issn

1573-904X

journal_volume

28

pub_type

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