Pseudaminic Acid on Campylobacter jejuni Flagella Modulates Dendritic Cell IL-10 Expression via Siglec-10 Receptor: A Novel Flagellin-Host Interaction. Stephenson, H. N., Mills, D. C., Jones, H., Milioris, E., Copland, A., Dorrell, N., Wren, B. W., Crocker, P. R., Escors, D., & Bajaj-Elliott, M. Journal of Infectious Diseases, May, 2014. ![Pseudaminic Acid on Campylobacter jejuni Flagella Modulates Dendritic Cell IL-10 Expression via Siglec-10 Receptor: A Novel Flagellin-Host Interaction [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Introduction. Campylobacter jejuni is a leading cause of bacterial gastroenteritis worldwide. At present the identity of host-pathogen interactions that promote successful bacterial colonisation remain ill defined. Herein, we aimed to investigate C. jejuni-mediated effects on dendritic cell (DC) immunity. Results. We found C. jejuni to be a potent inducer of human and murine DC interleukin 10 (IL-10) in vitro, a cellular event that was MyD88- and p38 MAPK-signalling dependent. Utilizing a series of C. jejuni isogenic mutants we found the major flagellin protein, FlaA, modulated IL-10 expression, an intriguing observation as C. jejuni FlaA is not a TLR5 agonist. Further analysis revealed pseudaminic acid residues on the flagella contributed to DC IL-10 expression. We identified the ability of both viable C. jejuni and purified flagellum to bind to Siglec-10, an immune-modulatory receptor. In vitro infection of Siglec-10 overexpressing cells resulted in increased IL-10 expression in a p38-dependent manner. Detection of Siglec-10 on intestinal CD11c+ CD103+ DCs added further credence to the notion that this novel interaction may contribute to immune outcome during human infection. Conclusions. We propose that unlike the Salmonella Typhimurium flagella-TLR5 driven pro-inflammatory axis, C. jejuni flagella instead promote an anti-inflammatory axis via glycan-Siglec-10 engagement.
@article{stephenson_pseudaminic_2014,
title = {Pseudaminic {Acid} on {Campylobacter} jejuni {Flagella} {Modulates} {Dendritic} {Cell} {IL}-10 {Expression} via {Siglec}-10 {Receptor}: {A} {Novel} {Flagellin}-{Host} {Interaction}},
issn = {0022-1899, 1537-6613},
shorttitle = {Pseudaminic {Acid} on {Campylobacter} jejuni {Flagella} {Modulates} {Dendritic} {Cell} {IL}-10 {Expression} via {Siglec}-10 {Receptor}},
url = {http://jid.oxfordjournals.org/content/early/2014/07/01/infdis.jiu287},
doi = {10.1093/infdis/jiu287},
abstract = {Introduction. Campylobacter jejuni is a leading cause of bacterial gastroenteritis worldwide. At present the identity of host-pathogen interactions that promote successful bacterial colonisation remain ill defined. Herein, we aimed to investigate C. jejuni-mediated effects on dendritic cell (DC) immunity.
Results. We found C. jejuni to be a potent inducer of human and murine DC interleukin 10 (IL-10) in vitro, a cellular event that was MyD88- and p38 MAPK-signalling dependent. Utilizing a series of C. jejuni isogenic mutants we found the major flagellin protein, FlaA, modulated IL-10 expression, an intriguing observation as C. jejuni FlaA is not a TLR5 agonist. Further analysis revealed pseudaminic acid residues on the flagella contributed to DC IL-10 expression. We identified the ability of both viable C. jejuni and purified flagellum to bind to Siglec-10, an immune-modulatory receptor. In vitro infection of Siglec-10 overexpressing cells resulted in increased IL-10 expression in a p38-dependent manner. Detection of Siglec-10 on intestinal CD11c+ CD103+ DCs added further credence to the notion that this novel interaction may contribute to immune outcome during human infection.
Conclusions. We propose that unlike the Salmonella Typhimurium flagella-TLR5 driven pro-inflammatory axis, C. jejuni flagella instead promote an anti-inflammatory axis via glycan-Siglec-10 engagement.},
language = {en},
urldate = {2014-12-10TZ},
journal = {Journal of Infectious Diseases},
author = {Stephenson, Holly N. and Mills, Dominic C. and Jones, Hannah and Milioris, Enea and Copland, Alastair and Dorrell, Nick and Wren, Brendan W. and Crocker, Paul R. and Escors, David and Bajaj-Elliott, Mona},
month = may,
year = {2014},
pmid = {24823621},
keywords = {Campylobacter jejuni, IL-10, Read, Siglec-10, dendritic cells, immune modulation, p38},
pages = {jiu287}
}
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We found C. jejuni to be a potent inducer of human and murine DC interleukin 10 (IL-10) in vitro, a cellular event that was MyD88- and p38 MAPK-signalling dependent. Utilizing a series of C. jejuni isogenic mutants we found the major flagellin protein, FlaA, modulated IL-10 expression, an intriguing observation as C. jejuni FlaA is not a TLR5 agonist. Further analysis revealed pseudaminic acid residues on the flagella contributed to DC IL-10 expression. We identified the ability of both viable C. jejuni and purified flagellum to bind to Siglec-10, an immune-modulatory receptor. In vitro infection of Siglec-10 overexpressing cells resulted in increased IL-10 expression in a p38-dependent manner. Detection of Siglec-10 on intestinal CD11c+ CD103+ DCs added further credence to the notion that this novel interaction may contribute to immune outcome during human infection. Conclusions. 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Campylobacter jejuni is a leading cause of bacterial gastroenteritis worldwide. At present the identity of host-pathogen interactions that promote successful bacterial colonisation remain ill defined. Herein, we aimed to investigate C. jejuni-mediated effects on dendritic cell (DC) immunity.\nResults. We found C. jejuni to be a potent inducer of human and murine DC interleukin 10 (IL-10) in vitro, a cellular event that was MyD88- and p38 MAPK-signalling dependent. Utilizing a series of C. jejuni isogenic mutants we found the major flagellin protein, FlaA, modulated IL-10 expression, an intriguing observation as C. jejuni FlaA is not a TLR5 agonist. Further analysis revealed pseudaminic acid residues on the flagella contributed to DC IL-10 expression. We identified the ability of both viable C. jejuni and purified flagellum to bind to Siglec-10, an immune-modulatory receptor. 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