| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2500753 | International Journal of Pharmaceutics | 2016 | 8 Pages |
Poly(lactic-co-glycolic acid) (PLGA) based nano/micro particles were investigated as a potential vaccine platform for pertussis antigen. Presentation of pertussis toxoid as nano/micro particles (NP/MP) gave similar antigen-specific IgG responses in mice compared to soluble antigen. Notably, in cell line based assays, it was found that PLGA based nano/micro particles enhanced the phagocytosis of fluorescent antigen-nano/micro particles by J774.2 murine monocyte/macrophage cells compared to soluble antigen. More importantly, when mice were immunised with the antigen-nano/micro particles they significantly increased antigen-specific Th1 cytokines INF-γ and IL-17 secretion in splenocytes after in vitro re-stimulation with heat killed Bordetalla pertussis, indicating the induction of a Th1/Th17 response. Also, presentation of pertussis antigen in a NP/MP formulation is able to provide protection against respiratory infection in a murine model. Thus, the NP/MP formulation may provide an alternative to conventional acellular vaccines to achieve a more balanced Th1/Th2 immune response.
Graphical abstractThe pertussis toxoid (PTd) loaded nano/micro poly(lactic-glycolic acid) (PLGA) particles elicited a more balanced Th1/Th2 immune responseFigure optionsDownload full-size imageDownload high-quality image (146 K)Download as PowerPoint slide
