Early Oral Administration of Ginseng Stem-Leaf Saponins Enhances the Peyer's Patch-Dependent Maternal IgA Antibody Response to a PEDV Inactivated Vaccine in Mice, with Gut Microbiota Involvement
文献类型： 外文期刊
作者： Su, Fei 1 ; Li, Junxing 1 ; Xue, Yin 2 ; Yu, Bin 1 ; Ye, Shiyi 1 ; Xu, Lihua 1 ; Fu, Yuan 1 ; Yuan, Xiufang 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310002, Peoples R China
2.Zhejiang Ctr Anim Dis Control, Hangzhou 310020, Peoples R China
关键词： GSLS; PEDV; mucosal immune enhancement; maternal IgA; Peyer's patches; gut microbiota
期刊名称：VACCINES （ 影响因子：7.8； 五年影响因子：7.4 ）
ISSN：
年卷期： 2023 年 11 卷 4 期
页码：
收录情况： SCI
摘要： Neonatal piglets during the first week of life are highly susceptible to porcine epidemic diarrhoea virus (PEDV) infection, with mortality rates reaching 80-100%. Passive lactogenic immunity remains the most effective way to protect neonates from infection. Although safe, inactivated vaccines provide little or no passive protection. Here, we administered ginseng stem-leaf saponins (GSLS) to mice before parenteral immunization with an inactivated PEDV vaccine to investigate the effect of GSLS on the gut-mammary gland (MG)-secretory IgA axis. Early oral GSLS administration potently increased PEDV-specific IgA plasma cell generation in the intestine, facilitated intestinal IgA plasma cell migration to the MG by enhancing the chemokine receptor (CCR)10-chemokine ligand (CCL)28 interaction, and ultimately promoted specific IgA secretion into milk, which was dependent on Peyer's patches (PPs). Additionally, GSLS improved the gut microbiota composition, especially increasing probiotic abundance, and these microflora members promoted the GSLS-enhanced gut-MG-secretory IgA axis response and were regulated by PPs. In summary, our findings highlight the potential of GSLS as an oral adjuvant for PEDV-inactivated vaccines and provide an attractive vaccination strategy for lactogenic immunity induction in sows. Further studies are required to evaluate the mucosal immune enhancement efficacy of GSLS in pigs.
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