| C5a receptor-deficient dendritic cells promote induction of Treg and Th17 cells. | |
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MedLine Citation:
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PMID: 20017191 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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C5a is a proinflammatory mediator that has recently been shown to regulate adaptive immune responses. Here we demonstrate that C5a receptor (C5aR) signaling in DC affects the development of Treg and Th17 cells. Genetic ablation or pharmacological targeting of the C5aR in spleen-derived DC results in increased production of TGF-beta leading to de novo differentiation of Foxp3(+) Treg within 12 h after co-incubation with CD4(+) T cells from DO11.10/RAG2(-/-) mice. Stimulation of C5aR(-/-) DC with OVA and TLR2 ligand Pam(3)CSK(4) increased TGF-beta production and induced high levels of IL-6 and IL-23 but only minor amounts of IL-12 leading to differentiation of Th cells producing IL-17A and IL-21. Th17 differentiation was also found in vivo after adoptive transfer of CD4(+) Th cell into C5aR(-/-) mice immunized with OVA and Pam(3)CSK(4). The altered cytokine production of C5aR(-/-) DC was associated with low steady state MHC class II expression and an impaired ability to upregulate CD86 and CD40 in response to TLR2. Our data suggest critical roles for C5aR in Treg and Th17-cell differentiation through regulation of DC function. |
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Authors:
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Donald J Weaver; Edimara S Reis; Manoj K Pandey; Gabriele Köhl; Nathaniel Harris; Craig Gerard; Jörg Köhl |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: European journal of immunology Volume: 40 ISSN: 1521-4141 ISO Abbreviation: Eur. J. Immunol. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-11 Completed Date: 2010-04-16 Revised Date: 2011-07-25 |
Medline Journal Info:
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Nlm Unique ID: 1273201 Medline TA: Eur J Immunol Country: Germany |
Other Details:
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Languages: eng Pagination: 710-21 Citation Subset: IM |
Affiliation:
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Division of Molecular Immunology, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, OH, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cell Differentiation / immunology* Cell Separation Dendritic Cells / immunology*, metabolism Enzyme-Linked Immunosorbent Assay Flow Cytometry Interleukin-17 / immunology Mice Mice, Inbred BALB C Mice, Transgenic Receptor, Anaphylatoxin C5a / deficiency, immunology* Signal Transduction / immunology* T-Lymphocytes, Helper-Inducer / cytology*, immunology, metabolism T-Lymphocytes, Regulatory / cytology*, immunology, metabolism |
| Grant Support | |
ID/Acronym/Agency:
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AI057839/AI/NIAID NIH HHS; HL051366/HL/NHLBI NIH HHS; R01 AI057839-01A1/AI/NIAID NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Interleukin-17; 0/Receptor, Anaphylatoxin C5a |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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