Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine

Abstract Background Poly(D, L-lactic-co-glycolic acid) (PLGA) nanoparticles have potential applications as a vaccine adjuvant and delivery system due to its unique advantages as biodegradability and biocompatibility. Experimental We fabricated cationic solid lipid nanoparticles using PLGA and dimeth...

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Autores principales: Shulan Han, Wenyan Ma, Dawei Jiang, Logan Sutherlin, Jing Zhang, Yu Lu, Nan Huo, Zhao Chen, Jonathan W. Engle, Yanping Wang, Xiaojie Xu, Lei Kang, Weibo Cai, Lianyan Wang
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Publicado: BMC 2021
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spelling oai:doaj.org-article:c3653e845d0046e18d6e6664078eb1492021-11-28T12:26:33ZIntracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine10.1186/s12951-021-01116-81477-3155https://doaj.org/article/c3653e845d0046e18d6e6664078eb1492021-11-01T00:00:00Zhttps://doi.org/10.1186/s12951-021-01116-8https://doaj.org/toc/1477-3155Abstract Background Poly(D, L-lactic-co-glycolic acid) (PLGA) nanoparticles have potential applications as a vaccine adjuvant and delivery system due to its unique advantages as biodegradability and biocompatibility. Experimental We fabricated cationic solid lipid nanoparticles using PLGA and dimethyl-dioctadecyl-ammonium bromide (DDAB), followed by loading of model antigen OVA (antigen ovalbumin, OVA257-264) to form an OVA@DDAB/PLGA nano-vaccine. And we investigated the intracellular signaling pathway in dendritic cells in vitro and antigen transport pathway and immune response in vivo mediated by an OVA@DDAB/PLGA nano-vaccine. Results In vitro experiments revealed that the antigen uptake of BMDCs after nanovaccine incubation was two times higher than pure OVA or OVA@Al at 12 h. The BMDCs were well activated by p38 MAPK signaling pathway. Furthermore, the nano-vaccine induced antigen escape from lysosome into cytoplasm with 10 times increased cross-presentation activity than those of OVA or OVA@Al. Regarding the transport of antigen into draining lymph nodes (LNs), the nano-vaccine could rapidly transfer antigen to LNs by passive lymphatic drainage and active DC transport. The antigen+ cells in inguinal/popliteal LNs for the nano-vaccine were increased over two folds comparing to OVA@Al and OVA at 12 h. Moreover, the antigen of nano-vaccine stayed in LNs for over 7 days, germinal center formation over two folds higher than those of OVA@Al and OVA. After immunization, the nano-vaccine induced a much higher ratio of IgG2c/IgG1 than OVA@Al. It also effectively activated CD4+ T, CD8+ T and B cells for immune memory with a strong cellular response. Conclusion These results indicated that DDAB/PLGA NP was a potent platform to improve vaccine immunogenicity by p38 signaling pathway in BMDCs, enhancing transport of antigens to LNs, and higher immunity response. Graphical AbstractShulan HanWenyan MaDawei JiangLogan SutherlinJing ZhangYu LuNan HuoZhao ChenJonathan W. EngleYanping WangXiaojie XuLei KangWeibo CaiLianyan WangBMCarticleDDAB/PLGANano-vaccineDCs activationp38 signaling pathwayAntigen transportBiotechnologyTP248.13-248.65Medical technologyR855-855.5ENJournal of Nanobiotechnology, Vol 19, Iss 1, Pp 1-22 (2021)
institution DOAJ
collection DOAJ
language EN
topic DDAB/PLGA
Nano-vaccine
DCs activation
p38 signaling pathway
Antigen transport
Biotechnology
TP248.13-248.65
Medical technology
R855-855.5
spellingShingle DDAB/PLGA
Nano-vaccine
DCs activation
p38 signaling pathway
Antigen transport
Biotechnology
TP248.13-248.65
Medical technology
R855-855.5
Shulan Han
Wenyan Ma
Dawei Jiang
Logan Sutherlin
Jing Zhang
Yu Lu
Nan Huo
Zhao Chen
Jonathan W. Engle
Yanping Wang
Xiaojie Xu
Lei Kang
Weibo Cai
Lianyan Wang
Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
description Abstract Background Poly(D, L-lactic-co-glycolic acid) (PLGA) nanoparticles have potential applications as a vaccine adjuvant and delivery system due to its unique advantages as biodegradability and biocompatibility. Experimental We fabricated cationic solid lipid nanoparticles using PLGA and dimethyl-dioctadecyl-ammonium bromide (DDAB), followed by loading of model antigen OVA (antigen ovalbumin, OVA257-264) to form an OVA@DDAB/PLGA nano-vaccine. And we investigated the intracellular signaling pathway in dendritic cells in vitro and antigen transport pathway and immune response in vivo mediated by an OVA@DDAB/PLGA nano-vaccine. Results In vitro experiments revealed that the antigen uptake of BMDCs after nanovaccine incubation was two times higher than pure OVA or OVA@Al at 12 h. The BMDCs were well activated by p38 MAPK signaling pathway. Furthermore, the nano-vaccine induced antigen escape from lysosome into cytoplasm with 10 times increased cross-presentation activity than those of OVA or OVA@Al. Regarding the transport of antigen into draining lymph nodes (LNs), the nano-vaccine could rapidly transfer antigen to LNs by passive lymphatic drainage and active DC transport. The antigen+ cells in inguinal/popliteal LNs for the nano-vaccine were increased over two folds comparing to OVA@Al and OVA at 12 h. Moreover, the antigen of nano-vaccine stayed in LNs for over 7 days, germinal center formation over two folds higher than those of OVA@Al and OVA. After immunization, the nano-vaccine induced a much higher ratio of IgG2c/IgG1 than OVA@Al. It also effectively activated CD4+ T, CD8+ T and B cells for immune memory with a strong cellular response. Conclusion These results indicated that DDAB/PLGA NP was a potent platform to improve vaccine immunogenicity by p38 signaling pathway in BMDCs, enhancing transport of antigens to LNs, and higher immunity response. Graphical Abstract
format article
author Shulan Han
Wenyan Ma
Dawei Jiang
Logan Sutherlin
Jing Zhang
Yu Lu
Nan Huo
Zhao Chen
Jonathan W. Engle
Yanping Wang
Xiaojie Xu
Lei Kang
Weibo Cai
Lianyan Wang
author_facet Shulan Han
Wenyan Ma
Dawei Jiang
Logan Sutherlin
Jing Zhang
Yu Lu
Nan Huo
Zhao Chen
Jonathan W. Engle
Yanping Wang
Xiaojie Xu
Lei Kang
Weibo Cai
Lianyan Wang
author_sort Shulan Han
title Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
title_short Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
title_full Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
title_fullStr Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
title_full_unstemmed Intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an OVA@DDAB/PLGA nano-vaccine
title_sort intracellular signaling pathway in dendritic cells and antigen transport pathway in vivo mediated by an ova@ddab/plga nano-vaccine
publisher BMC
publishDate 2021
url https://doaj.org/article/c3653e845d0046e18d6e6664078eb149
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