Lgt Processing is Essential for Streptococcus suis Lipoprotein Activation of the Innate Immune System
Author Information
Author(s): Wichgers Schreur Paul J., Rebel Johanna M. J., Smits Mari A., van Putten Jos P. M., Smith Hilde E.
Primary Institution: Central Veterinary Institute, Wageningen UR, Lelystad, The Netherlands
Hypothesis
The study aims to identify components of Streptococcus suis that activate porcine peripheral blood mononucleated cells (PBMCs).
Conclusion
Lipoproteins of S. suis are major activators of the innate immune system in pigs, and Lgt processing is necessary for their activation.
Supporting Evidence
- More than half of the tested fractions increased IL-1β and IL-8 cytokine gene transcript levels in porcine PBMCs.
- Genetic inactivation of the Lgt gene resulted in deficient lipoprotein synthesis and reduced activation of porcine PBMCs.
- Mass spectrometry identified 24 proteins, including 9 lipoproteins, as major activators of the innate immune response.
Takeaway
This study found that certain proteins from a bacteria called S. suis help pigs' immune systems fight infections, and a specific process is needed for these proteins to work.
Methodology
The study used mass spectrometry and cytokine gene transcript analysis to identify and characterize lipoproteins from S. suis.
Limitations
The study primarily focused on in vitro experiments, which may not fully represent in vivo conditions.
Participant Demographics
The study involved porcine peripheral blood mononucleated cells (PBMCs) from pigs.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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