M1 protein of Streptococcus pyogenes increases production of the antibacterial CXC chemokine MIG/CXCL9 in pharyngeal epithelial cells
Eliasson, Mette LU ; Frick, Inga-Maria LU ; Collin, Mattias LU
; Sørensen, Ole E
LU
; Björck, Lars
LU
and Egesten, Arne
LU
(2007)
In Microbial Pathogenesis
43(5-6).
p.224-233
- Abstract
- Streptococcus pyogenes adheres to epithelial cells of the human pharynx where it can cause pharyngitis. To counteract infection. inflamed epithelium produces peptide antibiotics, among them the CXC chemokine MIG/CXCL9. M protein is both a surface-associated and released virulence factor of S. pyogenes. Here we show that soluble M1 protein enhances MIG gene expression and synthesis in IFN-gamma stimulated epithelial cells. M1 protein was recognized both by resting and IFN-gamma activated pharyngeal epithelial cells as detected by activation of the transcription factor NF-kappa B. Furthermore, pharmacological inhibition of NF-kappa B. decreased MIG synthesis in IFN-gamma activated cells, demonstrating a key role for NF-kappa B in mediating... (More)
- Streptococcus pyogenes adheres to epithelial cells of the human pharynx where it can cause pharyngitis. To counteract infection. inflamed epithelium produces peptide antibiotics, among them the CXC chemokine MIG/CXCL9. M protein is both a surface-associated and released virulence factor of S. pyogenes. Here we show that soluble M1 protein enhances MIG gene expression and synthesis in IFN-gamma stimulated epithelial cells. M1 protein was recognized both by resting and IFN-gamma activated pharyngeal epithelial cells as detected by activation of the transcription factor NF-kappa B. Furthermore, pharmacological inhibition of NF-kappa B. decreased MIG synthesis in IFN-gamma activated cells, demonstrating a key role for NF-kappa B in mediating the enhanced response. Microarrays were used to investigate expression of recognized antimicrobial peptides in pharyngeal epithelial cells after stimulation with a combination of IFN-gamma and M1 protein. Amongst the most up-regulated and expressed genes, were several antibacterial CC and CXC chemokines. To investigate all in vivo context, pharyngeal mucosa was stimulated in vitro and MIG could be detected by immunohistochemistry in epithelial cells. The results show that epithelial cells can recognize solubilized M I protein and intact S. pyogenes, thereby modulating an antibacterial innate host response that may have bearing oil the outcome of streptococcal pharyngitis. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/655151
- author
- Eliasson, Mette
LU
; Frick, Inga-Maria
LU
; Collin, Mattias
LU
; Sørensen, Ole E
LU
; Björck, Lars
LU
and Egesten, Arne
LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- innate immunity, mucosa, infection
- in
- Microbial Pathogenesis
- volume
- 43
- issue
- 5-6
- pages
- 224 - 233
- publisher
- Academic Press
- external identifiers
-
- wos:000250194800007
- scopus:34548624932
- ISSN
- 1096-1208
- DOI
- 10.1016/j.micpath.2007.06.007
- language
- English
- LU publication?
- yes
- id
- 634f694e-9b8a-46fa-a520-23480ab2f893 (old id 655151)
- date added to LUP
- 2016-04-01 12:17:59
- date last changed
- 2022-02-11 05:09:39
@article{634f694e-9b8a-46fa-a520-23480ab2f893,
abstract = {{Streptococcus pyogenes adheres to epithelial cells of the human pharynx where it can cause pharyngitis. To counteract infection. inflamed epithelium produces peptide antibiotics, among them the CXC chemokine MIG/CXCL9. M protein is both a surface-associated and released virulence factor of S. pyogenes. Here we show that soluble M1 protein enhances MIG gene expression and synthesis in IFN-gamma stimulated epithelial cells. M1 protein was recognized both by resting and IFN-gamma activated pharyngeal epithelial cells as detected by activation of the transcription factor NF-kappa B. Furthermore, pharmacological inhibition of NF-kappa B. decreased MIG synthesis in IFN-gamma activated cells, demonstrating a key role for NF-kappa B in mediating the enhanced response. Microarrays were used to investigate expression of recognized antimicrobial peptides in pharyngeal epithelial cells after stimulation with a combination of IFN-gamma and M1 protein. Amongst the most up-regulated and expressed genes, were several antibacterial CC and CXC chemokines. To investigate all in vivo context, pharyngeal mucosa was stimulated in vitro and MIG could be detected by immunohistochemistry in epithelial cells. The results show that epithelial cells can recognize solubilized M I protein and intact S. pyogenes, thereby modulating an antibacterial innate host response that may have bearing oil the outcome of streptococcal pharyngitis.}},
author = {{Eliasson, Mette and Frick, Inga-Maria and Collin, Mattias and Sørensen, Ole E and Björck, Lars and Egesten, Arne}},
issn = {{1096-1208}},
keywords = {{innate immunity; mucosa; infection}},
language = {{eng}},
number = {{5-6}},
pages = {{224--233}},
publisher = {{Academic Press}},
series = {{Microbial Pathogenesis}},
title = {{M1 protein of Streptococcus pyogenes increases production of the antibacterial CXC chemokine MIG/CXCL9 in pharyngeal epithelial cells}},
url = {{http://dx.doi.org/10.1016/j.micpath.2007.06.007}},
doi = {{10.1016/j.micpath.2007.06.007}},
volume = {{43}},
year = {{2007}},
}