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"Salmonella, meet mycobacteria."
Stephanie R Lovell-Read1,2, Luiz Pedro Sorio de Carvalho3
1Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, UK.
The Journal of Experimental Medicine
|March 3, 2019
Summary
Researchers discovered a new type of trehalose-containing cell wall lipids in virulent Salmonella serovars. These lipids are structurally similar to the mycobacterial immunogen, cord factor, offering new insights into bacterial pathogenesis.
Area of Science:
- Microbiology
- Lipidomics
- Immunology
Background:
- Salmonella serovars are significant bacterial pathogens.
- Bacterial cell wall composition is crucial for virulence.
- Cord factor is a known mycobacterial immunogen.
Purpose of the Study:
- To identify novel cell wall lipids in Salmonella.
- To investigate the structural relationship between Salmonella lipids and known immunogens.
Main Methods:
- Comparative lipidomics was employed.
- Analysis focused on virulent Salmonella serovars.
Main Results:
- A new family of trehalose-containing cell wall lipids was identified.
- These lipids are enriched in virulent Salmonella serovars.
- The identified lipids are structurally related to mycobacterial cord factor.
Conclusions:
- The newly identified lipids represent a potential virulence factor in Salmonella.
- Structural similarity to cord factor suggests possible roles in host-pathogen interactions.
- Further research into these lipids could reveal new therapeutic targets.