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    Publication Date: 2016-01-30
    Description: Dietary antigens are normally rendered nonimmunogenic through a poorly understood "oral tolerance" mechanism that involves immunosuppressive regulatory T (Treg) cells, especially Treg cells induced from conventional T cells in the periphery (pTreg cells). Although orally introducing nominal protein antigens is known to induce such pTreg cells, whether a typical diet induces a population of pTreg cells under normal conditions thus far has been unknown. By using germ-free mice raised and bred on an elemental diet devoid of dietary antigens, we demonstrated that under normal conditions, the vast majority of the small intestinal pTreg cells are induced by dietary antigens from solid foods. Moreover, these pTreg cells have a limited life span, are distinguishable from microbiota-induced pTreg cells, and repress underlying strong immunity to ingested protein antigens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Kwang Soon -- Hong, Sung-Wook -- Han, Daehee -- Yi, Jaeu -- Jung, Jisun -- Yang, Bo-Gie -- Lee, Jun Young -- Lee, Minji -- Surh, Charles D -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):858-63. doi: 10.1126/science.aac5560. Epub 2016 Jan 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Academy of Immunology and Microbiology, Institute for Basic Science, Pohang, Republic of Korea. Department of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea. ; Academy of Immunology and Microbiology, Institute for Basic Science, Pohang, Republic of Korea. Department of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea. Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26822607" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; Diet ; Dietary Proteins/*immunology ; Dyspepsia/*immunology ; Gastrointestinal Microbiome/*immunology ; Germ-Free Life ; Immune Tolerance ; Immunity, Mucosal ; Intestine, Small/*immunology/*microbiology ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; T-Lymphocytes, Regulatory/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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