Characteristic Immune Response in Peyer’s Patch Cells Induced by Oral Administration of Bifidobacterium Components
- 1 January 2005
- journal article
- research article
- Published by Springer Science and Business Media LLC in Cytotechnology
- Vol. 47 (1-3), 69-77
- https://doi.org/10.1007/s10616-005-3776-1
Abstract
We demonstrate immunomodulatory effects, especially those involving murine intestinal IgA secretion, in Peyer's patch cells following oral administration of Bifidobacterium immunomodulator (BIM) derived from sonicated B. pseudocatenulatum 7041. BALB/c mice were administered BIM orally for 7 consecutive days. The PP cells demonstrated upregulated secretion of total IgA including BIM-specific IgA following BIM administration. In observing the response of PP cells co-cultured with BIM, we found enhanced secretion of interferon-γ (IFN-γ) and interleukin (IL)-6 in the CD4+ T cells. In contrast, IL-12 secretion by Thy1.2− PP cells was enhanced, but secretion of IFN-γ, IL-5, and IL-6 was not significantly affected. Furthermore, the population of CD4+ CD45RBhigh T cells in PP increased following oral administration of BIM. These data suggest that CD4+ T cells were affected by BIM administration. Overall, the results show that oral administration of BIM induced CD4+ PP cells to change their expression of cell surface antigen and cytokine production.Keywords
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