Chuan J Zhou 1,2 , Jin Chen 2 , Ji B Hou 2 , Yang Zheng 1 , Yuan N Yu 1 , Hui He 2,3 , Yuan P Zhang 2 , Xiu L Feng 1 , Qi S Zheng 2 Show Affiliations »
Abstract
BACKGROUND: The muramyl dipeptide compound adjuvant, CVC1303, was one new resigned adjuvant to PEDV inactivated vaccine. Exploring the effects of CVC1303 on the immune induction to PEDV vaccine was of vital importance to the clinical application. OBJECTIVES: Here we explored the functions of CVC1303 on the humoral, cellular and mucosal immune response to PEDV vaccine in mice immunization. METHODS: Mice were twice subcutaneously injected with PEDV vaccine including high, medium and low dosages CVC1303, respectively. On 30th day after the second immunization, sera samples were collected from the immunized mice to measure PEDV-specific IgG and IgG subclasses levels, and lymphocytes were isolated to detect T cell subtype and intracellular IL-4 and IL-6 cytokine productions, and the expressions of co-stimulatory molecule on dendritic cells in the immunized mice. Small intestinal and lung washings were collected on 30th and 47th day after the second immunization to measure PEDV-specific IgA levels, and SP immunohistochemical method staining was employed to analyze the deviations of IgA+ positive cells in the small intestinal of the immunized mice. RESULTS: Our investigation proved the strong regulatory roles of CVC1303 on PEDV-specific IgG and IgG1 antibody and cytokines productions, and the significant increased CD3+CD4+T cells subpopulation and expressions of co-stimulatory molecules on dendritic cells in the immunized mice. Moreover, our findings verified the significantly enhanced PEDV-specific IgA antibody titers in small intestinal and lung in the mice immunized with PEDV vaccine and CVC1303. CONCLUSION: Compound adjuvant CVC1303 could effectively improve the PEDV-specific immune responses and mucosal immune, which provided an experimental basis for the further clinical application of new adjuvant CVC1303 and the development of improvement on the mucosal immune response. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.
BACKGROUND: The muramyl dipeptide compound adjuvant, CVC1303, was one new resigned adjuvant to PEDV inactivated vaccine. Exploring the effects of CVC1303 on the immune induction to PEDV vaccine was of vital importance to the clinical application. OBJECTIVES: Here we explored the functions of CVC1303 on the humoral, cellular and mucosal immune response to PEDV vaccine in mice immunization. METHODS: Mice were twice subcutaneously injected with PEDV vaccine including high, medium and low dosages CVC1303, respectively. On 30th day after the second immunization, sera samples were collected from the immunized mice to measure PEDV -specific IgG and IgG subclasses levels, and lymphocytes were isolated to detect T cell subtype and intracellular IL-4 and IL-6 cytokine productions, and the expressions of co-stimulatory molecule on dendritic cells in the immunized mice . Small intestinal and lung washings were collected on 30th and 47th day after the second immunization to measure PEDV -specific IgA levels, and SP immunohistochemical method staining was employed to analyze the deviations of IgA+ positive cells in the small intestinal of the immunized mice . RESULTS: Our investigation proved the strong regulatory roles of CVC1303 on PEDV -specific IgG and IgG1 antibody and cytokines productions, and the significant increased CD3+CD4+T cells subpopulation and expressions of co-stimulatory molecules on dendritic cells in the immunized mice . Moreover, our findings verified the significantly enhanced PEDV -specific IgA antibody titers in small intestinal and lung in the mice immunized with PEDV vaccine and CVC1303. CONCLUSION: Compound adjuvant CVC1303 could effectively improve the PEDV -specific immune responses and mucosal immune, which provided an experimental basis for the further clinical application of new adjuvant CVC1303 and the development of improvement on the mucosal immune response. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.
Entities: Chemical
Gene
Species
Keywords:
Compound adjuvant CVC1303; DC cell costimulatory factor; IgA; antibody response; cellularmediatedzzm321990response; porcine epidemic diarrhea virus inactivated vaccine.
Mesh： See more »
Substances： See more »
Year: 2018
PMID： 30227812 DOI： 10.2174/0929866525666180917160926
Source DB: PubMed Journal: Protein Pept Lett ISSN： 0929-8665 Impact factor: 1.890