γδ T Cell-Secreted XCL1 Mediates Anti-CD3-Induced Oral Tolerance
Copyright © 2019 by The American Association of Immunologists, Inc..
Oral tolerance is defined as the specific suppression of cellular and/or humoral immune responses to an Ag by prior administration of the Ag through the oral route. Although the investigation of oral tolerance has classically involved Ag feeding, we have found that oral administration of anti-CD3 mAb induced tolerance through regulatory T (Treg) cell generation. However, the mechanisms underlying this effect remain unknown. In this study, we show that conventional but not plasmacytoid dendritic cells (DCs) are required for anti-CD3-induced oral tolerance. Moreover, oral anti-CD3 promotes XCL1 secretion by small intestine lamina propria γδ T cells that, in turn, induces tolerogenic XCR1+ DC migration to the mesenteric lymph node, where Treg cells are induced and oral tolerance is established. Consistent with this, TCRδ-/- mice did not develop oral tolerance upon oral administration of anti-CD3. However, XCL1 was not required for oral tolerance induced by fed Ags, indicating that a different mechanism underlies this effect. Accordingly, oral administration of anti-CD3 enhanced oral tolerance induced by fed MOG35-55 peptide, resulting in less severe experimental autoimmune encephalomyelitis, which was associated with decreased inflammatory immune cell infiltration in the CNS and increased Treg cells in the spleen. Thus, Treg cell induction by oral anti-CD3 is a consequence of the cross-talk between γδ T cells and tolerogenic DCs in the gut. Furthermore, anti-CD3 may serve as an adjuvant to enhance oral tolerance to fed Ags.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:203 |
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| Enthalten in: |
Journal of immunology (Baltimore, Md. : 1950) - 203(2019), 10 vom: 15. Nov., Seite 2621-2629 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Rezende, Rafael M [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 01.06.2020 Date Revised 15.11.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.4049/jimmunol.1900784 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM301855846 |
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| 245 | 1 | 0 | |a γδ T Cell-Secreted XCL1 Mediates Anti-CD3-Induced Oral Tolerance |
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| 520 | |a Copyright © 2019 by The American Association of Immunologists, Inc. | ||
| 520 | |a Oral tolerance is defined as the specific suppression of cellular and/or humoral immune responses to an Ag by prior administration of the Ag through the oral route. Although the investigation of oral tolerance has classically involved Ag feeding, we have found that oral administration of anti-CD3 mAb induced tolerance through regulatory T (Treg) cell generation. However, the mechanisms underlying this effect remain unknown. In this study, we show that conventional but not plasmacytoid dendritic cells (DCs) are required for anti-CD3-induced oral tolerance. Moreover, oral anti-CD3 promotes XCL1 secretion by small intestine lamina propria γδ T cells that, in turn, induces tolerogenic XCR1+ DC migration to the mesenteric lymph node, where Treg cells are induced and oral tolerance is established. Consistent with this, TCRδ-/- mice did not develop oral tolerance upon oral administration of anti-CD3. However, XCL1 was not required for oral tolerance induced by fed Ags, indicating that a different mechanism underlies this effect. Accordingly, oral administration of anti-CD3 enhanced oral tolerance induced by fed MOG35-55 peptide, resulting in less severe experimental autoimmune encephalomyelitis, which was associated with decreased inflammatory immune cell infiltration in the CNS and increased Treg cells in the spleen. Thus, Treg cell induction by oral anti-CD3 is a consequence of the cross-talk between γδ T cells and tolerogenic DCs in the gut. Furthermore, anti-CD3 may serve as an adjuvant to enhance oral tolerance to fed Ags | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
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| 700 | 1 | |a Moreira, Thais G |e verfasserin |4 aut | |
| 700 | 1 | |a Lopes, Juliana R |e verfasserin |4 aut | |
| 700 | 1 | |a Kuhn, Chantal |e verfasserin |4 aut | |
| 700 | 1 | |a Tatematsu, Bruna K |e verfasserin |4 aut | |
| 700 | 1 | |a Boulenouar, Selma |e verfasserin |4 aut | |
| 700 | 1 | |a Maghzi, Amir-Hadi |e verfasserin |4 aut | |
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| 700 | 1 | |a Menezes, Gustavo B |e verfasserin |4 aut | |
| 700 | 1 | |a Chitnis, Tanuja |e verfasserin |4 aut | |
| 700 | 1 | |a Weiner, Howard L |e verfasserin |4 aut | |
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