Parallel exploitation of diverse host nutrients enhances salmonella virulence

Steeb, Benjamin and Claudi, Beatrice and Burton, Neil A. and Tienz, Petra and Schmidt, Alexander and Farhan, Hesso and Mazé, Alain and Bumann, Dirk. (2013) Parallel exploitation of diverse host nutrients enhances salmonella virulence. PLoS Pathogens, Vol. 9, H. 4 , e1003301.

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Official URL: http://edoc.unibas.ch/dok/A6135437

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Pathogen access to host nutrients in infected tissues is fundamental for pathogen growth and virulence, disease progression, and infection control. However, our understanding of this crucial process is still rather limited because of experimental and conceptual challenges. Here, we used proteomics, microbial genetics, competitive infections, and computational approaches to obtain a comprehensive overview of Salmonella nutrition and growth in a mouse typhoid fever model. The data revealed that Salmonella accessed an unexpectedly diverse set of at least 31 different host nutrients in infected tissues but the individual nutrients were available in only scarce amounts. Salmonella adapted to this situation by expressing versatile catabolic pathways to simultaneously exploit multiple host nutrients. A genome-scale computational model of Salmonella in vivo metabolism based on these data was fully consistent with independent large-scale experimental data on Salmonella enzyme quantities, and correctly predicted 92% of 738 reported experimental mutant virulence phenotypes, suggesting that our analysis provided a comprehensive overview of host nutrient supply, Salmonella metabolism, and Salmonella growth during infection. Comparison of metabolic networks of other pathogens suggested that complex host/pathogen nutritional interfaces are a common feature underlying many infectious diseases.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Infection Biology > Molecular Microbiology (Bumann)
UniBasel Contributors:Bumann, Dirk and Claudi, Beatrice and Chiquet, Petra and Schmidt, Alexander and Mazé, Alain
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:13 Oct 2017 07:46
Deposited On:21 Jun 2013 12:27

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