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Integrating chemical and genetic silencing strategies to identify host kinase-phosphatase inhibitor networks that control bacterial infection.
- Source :
-
ACS chemical biology [ACS Chem Biol] 2014 Feb 21; Vol. 9 (2), pp. 414-22. Date of Electronic Publication: 2013 Nov 25. - Publication Year :
- 2014
-
Abstract
- Every year three million people die as a result of bacterial infections, and this number may further increase due to resistance to current antibiotics. These antibiotics target almost all essential bacterial processes, leaving only a few new targets for manipulation. The host proteome has many more potential targets for manipulation in order to control bacterial infection, as exemplified by the observation that inhibiting the host kinase Akt supports the elimination of different intracellular bacteria including Salmonella and M. tuberculosis. If host kinases are involved in the control of bacterial infections, phosphatases could be as well. Here we present an integrated small interference RNA and small molecule screen to identify host phosphatase-inhibitor combinations that control bacterial infection. We define host phosphatases inhibiting intracellular growth of Salmonella and identify corresponding inhibitors for the dual specificity phosphatases DUSP11 and 27. Pathway analysis places many kinases and phosphatases controlling bacterial infection in an integrated pathway centered around Akt. This network controls host cell metabolism, survival, and growth and bacterial survival and reflect a natural host cell response to bacterial infection. Inhibiting two enzyme classes with opposite activities-kinases and phosphatases-may be a new strategy to overcome infections by antibiotic-resistant bacteria.
- Subjects :
- Anti-Bacterial Agents chemistry
Anti-Bacterial Agents pharmacology
Cell Line
Dual-Specificity Phosphatases genetics
Dual-Specificity Phosphatases metabolism
Enzyme Inhibitors chemistry
Enzyme Inhibitors pharmacology
Gene Silencing
Humans
Proto-Oncogene Proteins c-akt genetics
Proto-Oncogene Proteins c-akt metabolism
Salmonella Infections genetics
Salmonella typhimurium drug effects
Small Molecule Libraries chemistry
Small Molecule Libraries pharmacology
Dual-Specificity Phosphatases antagonists & inhibitors
Host-Pathogen Interactions
Proto-Oncogene Proteins c-akt antagonists & inhibitors
Salmonella Infections drug therapy
Salmonella Infections enzymology
Salmonella typhimurium physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1554-8937
- Volume :
- 9
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- ACS chemical biology
- Publication Type :
- Academic Journal
- Accession number :
- 24274083
- Full Text :
- https://doi.org/10.1021/cb400421a