PLGA nano/micro particles encapsulated with pertussis toxoid (PTd) enhances Th1/Th17 immune response in a murine model

Pan Li, Catpagavalli Asokanathanb, Fang Liu, Kyi Kyi Khaing, Dorota Kmiec, Xiaoqing Wei, Bin Song, Dorothy Xing, Deling Kong

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18 Citations (Scopus)
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Abstract

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.
Original languageEnglish
Pages (from-to)183-190
Number of pages8
JournalInternational Journal of Pharmaceutics
Volume513
Issue number1-2
Early online date29 Aug 2016
DOIs
Publication statusPublished - 20 Nov 2016

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