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| Status |
Public on Mar 27, 2013 |
| Title |
Genome wide analysis of C57BL-6 mice infected with European strain (P1/7) of Streptococcus suis |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by array
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| Summary |
Streptococcus suis is a major swine pathogen that can be transmitted to humans causing severe symptoms. A large human outbreak was described in China, where approximately 25% out of 215 infected humans developed an unusual streptococcal toxic shock-like syndrome (STSLS). Albeit increased expression of inflammatory mediators following infection by the Chinese S. suis strain was suggested as responsible for STSLS case severity, the mechanisms involved are still poorly understood. In this study, we investigated the host innate immune response to infection by either one of 3 strains of S. suis: 89-1591 (Canadian, intermediate virulence), P1/7 (European, high virulence), and SC84 (Chinese, epidemic strain). Using Illumina microarray and validating those results with qPCR and Luminex assay, infected mice showed elevated expression of mainly pro-inflammatory chemokine and cytokine genes. Generally, pro-inflammatory genes were expressed at a higher level in mice infected with S. suis strain SC84 > P1/7 > 89-1591. Interestingly, IFNγ was expressed at much higher levels only in mice infected with the S. suis strain SC84, which could potentially explain some of the STSLS symptoms. IFNγ-KO mice infected with SC84 showed better survival than WT mice while no differences was seen in mice infected with highly virulent P1/7 strain. Overall, our results show an important role of IFNγ in S. suis infections and might explain in part the increased virulence of SC84 responsible for a recent outbreak in China.
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| Overall design |
Total RNA obtained from spleen of C57BL/6 mice infected with Streptococcus suis strain P1/7 or mock-infected with THB. Four replicates in both groups.
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| Contributor(s) |
Lachance C, Gottschalk M, Gerber PP, Lemire P, Xu J, Segura M |
| Citation(s) |
23509145 |
| Submission date |
Oct 11, 2012 |
| Last update date |
Jun 14, 2018 |
| Contact name |
Claude Lachance |
| E-mail(s) |
claude.lachance@mail.mcgill.ca
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| Organization name |
Bio-Rad
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| Street address |
1329 Meyerside Drive
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| City |
Mississauga |
| State/province |
Ontario |
| ZIP/Postal code |
L5T 1C9 |
| Country |
Canada |
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| Platforms (1) |
| GPL6885 |
Illumina MouseRef-8 v2.0 expression beadchip |
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| Samples (8)
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| Relations |
| BioProject |
PRJNA177348 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE41521_RAW.tar |
3.1 Mb |
(http)(custom) |
TAR |
| GSE41521_non-normalized_P1_7.txt.gz |
1.3 Mb |
(ftp)(http) |
TXT |
| Processed data included within Sample table |
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