Abstract
The skewed T helper (Th) 2 response plays a critical role in the pathogenesis of allergic asthma. Regulatory T (Treg) cells and the regulatory cytokines are required in maintaining the homeostasis in the body. This study aims to determine the effects of a poly(lactic-co-glycolic) acid (PLGA)-ovalbumin (OVA)+A20 (a ubiquitin E3 ligase) nanovaccine on inhibiting allergic asthma in a murine model. In this study, A20 and OVA (a model antigen) were encapsulated into PLGA to be a nanovaccine (PLGA-OVA+A20). An allergic asthma murine model was developed with OVA as the specific antigen to test the role of PLGA-OVA+A20 nanovaccine in maintaining the immune homeostasis in the airway tissues. The results showed that PLGA-OVA+A20 nanovaccine inhibited the asthma responses in mice by suppressing Th2 inflammatory responses, promoting the generation of Treg cells in the airway tissues. We conclude that the PLGA-OVA+A20 nanovaccine has a marked inhibitory effect on the airway allergic response in sensitized mice by significantly promoting the generation of Treg cell and IL-10. The data suggest that PLGA-OVA+A20 has translational potential in the treatment of allergic asthma.
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Funding
This study was supported by grants from the National Nature and Science Foundation of China (81701589), the Miao-Miao plan of Shenzhen Hospital, Southern Medical University (2017MM05), and Guangdong Nature Science Foundation (2016A030310248; 2014A020212569).
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XQL, JWZ, SYQ, LQY, ZYL, MZ, and FXZ performed the experiments, analyzed the data, and reviewed the manuscript. LHM, DBL, and PCY organized and supervised the experiments. LHM and DBL designed the project and prepared the manuscript. PCY reviewed and edited the manuscript.
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Luo, XQ., Zhong, JW., Qiu, SY. et al. A20-OVA Nanoparticles Inhibit Allergic Asthma in a Murine Model. Inflammation 43, 953–961 (2020). https://doi.org/10.1007/s10753-020-01181-5
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DOI: https://doi.org/10.1007/s10753-020-01181-5