Targeted Delivery of GP5 Antigen of PRRSV to M Cells Enhances the Antigen-Specific Systemic and Mucosal Immune Responses
文献类型: 外文期刊
第一作者: Du, Luping
作者: Du, Luping;Yu, Zhengyu;Pang, Fengjiao;Xu, Xiangwei;Mao, Aihua;He, Kongwang;Li, Bin;Du, Luping;Yu, Zhengyu;Pang, Fengjiao;Xu, Xiangwei;Mao, Aihua;He, Kongwang;Li, Bin;Du, Luping;Yuan, Wanzhe
作者机构:
关键词: PRRSV;PLGA;M cells;DNA vaccine;immune response;delivery system
期刊名称:FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY ( 影响因子:5.293; 五年影响因子:5.882 )
ISSN: 2235-2988
年卷期: 2018 年 8 卷
页码:
收录情况: SCI
摘要: Efficient delivery of antigens through oral immunization is a first and critical step for successful induction of mucosal immunity, which can provide protection against pathogens invading the mucosa. Membranous/microfold cells (M cells) within the mucosa can transcytose internalized antigen without degradation and thus play an important role in initiating antigen-specific mucosal immune responses through inducing secretory IgA production. In this research, we modified poly (D, L-lactide-co-glycolide) (PLGA) nanoparticles (NPs) with Ulex europaeus agglutinin 1 (UEA-1) and successfully prepared an oral vaccine delivery system, UEA-1/PLGA NPs. PLGA NPs were prepared using a standard double emulsion solvent evaporation technique, which can protect the entrapped PRRSV DNA vaccine [pcDNA3.1-SynORF5 (synthetic ORF5)] or subunit vaccine ORF5-encoded glycoprotein (GP5) from exposure to the gastrointestinal (GI) tract and release the plasmids in a controlled manner. With UEA-1 modification, the UEA-1/PLGA NPs can be effectively transported by M-cells. We investigated immune response induced by UEA-1/PLGA-SynORF5 or UEA-1/PLGA-GP5 following inoculation in mice and piglets. Compared with PLGA-SynORF5 or PLGA-GP5 NPs, UEA-1/PLGA-SynORF5, or UEA-1/PLGA-GP5 NPs stimulated significantly increased serum IgG levels and augmented intestinal IgA levels in mice and piglets (P < 0.05). Our findings indicate UEA-1/PLGA NPs can be applied as a promising and universally robust oral vaccine delivery system.
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