In vitro bioassessment of the immunomodulatory activity of Saccharomyces cerevisiae components using bovine macrophages and Mycobacterium avium ssp. paratuberculosis
| Autor: | H. Kang, Philip J. Mead, Margaret Quinton, Z. Li, F. Ossa, Niel A. Karrow, Qiumei You |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Phagocytosis Saccharomyces cerevisiae Paratuberculosis Cattle Diseases Microbiology 03 medical and health sciences 0302 clinical medicine Antibiosis Genetics medicine Macrophage Animals chemistry.chemical_classification Reactive oxygen species biology Macrophages biology.organism_classification medicine.disease In vitro Yeast Mycobacterium avium subsp. paratuberculosis 030104 developmental biology chemistry Animal Science and Zoology Cattle 030215 immunology Food Science Mycobacterium |
| Zdroj: | Journal of dairy science. 101(7) |
| ISSN: | 1525-3198 |
| Popis: | The yeast Saccharomyces cerevisiae and its components are used for the prevention and treatment of enteric disease in different species; therefore, they may also be useful for preventing Johne's disease, a chronic inflammatory bowel disease of ruminants caused by Mycobacterium avium ssp. paratuberculosis (MAP). The objective of this study was to identify potential immunomodulatory S. cerevisiae components using a bovine macrophage cell line (BOMAC). The BOMAC phagocytic activity, reactive oxygen species production, and immune-related gene ( IL6 , IL10 , IL12p40 , IL13 , IL23 ), transforming growth factor β, ARG1 , CASP1 , and inducible nitric oxide synthase expression were investigated when BOMAC were cocultured with cell wall components from 4 different strains (A, B, C, and D) and 2 forms of dead yeast from strain A. The BOMAC phagocytosis of mCherry-labeled MAP was concentration-dependently attenuated when BOMAC were cocultured with yeast components for 6 h. Each yeast derivative also induced a concentration-dependent increase in BOMAC reactive oxygen species production after a 6-h exposure. In addition, BOMAC mRNA expression of the immune-related genes was investigated after 6 and 24 h of exposure to yeast components. All yeast components were found to regulate the immunomodulatory genes of BOMAC; however, the response varied among components and over time. The in vitro bioassessment studies reported here suggest that dead yeast and its cell wall components may be useful for modulating macrophage function before or during MAP infection. |
| Databáze: | OpenAIRE |
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