2012 Fiscal Year Final Research Report
Regulation of intestinal immune balance through affectingthe function of intestinal dendritic cells by intake of vitamin A
| Project/Area Number |
23780148
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Food science
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| Research Institution | Tokushima Bunri University |
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Principal Investigator |
NAKATSUMA Aya 徳島文理大学, 香川薬学部, 助教 (30446075)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 食品機能 / ビタミンA / レチノイン酸 / アレルギー / 粘膜免疫 / 免疫寛容 / 樹状細胞 / T細胞 |
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| Research Abstract |
We found that MLN-DC of vitamin A-deficient mice induced IL-13-producing inflammatory T cells, and that oral administration of antigen to these mice failed to induce immune tolerance but primed for strong IL-13-dependent IgG1 responses followed by IgE responses. Vitamin A deficiency enhanced TNF-α expression in the proximal colon, and that might further stimulate MLN-DC to induce IL-13-producing T cells. These results suggest that vitamin A plays critical roles in the inhibition of inflammatory or allergic responses to oral antigens partly through modulating the intestinal microenvironment and the nature of MLN-DC.
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Research Products
(11 results)
