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Proteomic signatures for daunomycin and adriamycin in Bacillus subtilis
U Sender1, J Bandow, S Engelmann
1Institute of Microbiology, Department of Pharmaceutical Biology, University of Greifswald, Germany.
Abstract:
The influence of the two anthracyclin antibiotics daunomycin and adriamycin on the proteome of Bacillus subtilis was investigated. They intercalate in the double helix causing strand breaks. Both compounds induce proteins related to DNA damage and oxidative stress as indicated by the induction of some members of the PerR and the DinR-regulon. The mild induction of some members of the HrcA- and the CtsR-regulon may indicate protein oxidation as well. Furthermore, an influence on the sigmaB-dependent general stress response was shown. These data show that the proteomic signature is a valuable experimental tool for a comprehensive evaluation of the action of different drugs.
Insights
Anthracycline antibiotics like daunomycin and adriamycin induce DNA damage and oxidative stress responses in Bacillus subtilis. Proteomic analysis revealed their impact on bacterial stress regulons and the general stress response.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Anthracycline antibiotics, including daunomycin and adriamycin, are known for their DNA-intercalating properties.
- Bacillus subtilis is a well-established model organism for studying bacterial responses to environmental stress.
Purpose of the Study:
- To investigate the impact of daunomycin and adriamycin on the proteome of Bacillus subtilis.
- To identify proteins and pathways affected by these anthracycline antibiotics.
Main Methods:
- Proteomic analysis of Bacillus subtilis treated with daunomycin and adriamycin.
- Identification of induced proteins related to DNA damage, oxidative stress, and general stress response.
Main Results:
- Both daunomycin and adriamycin induced proteins associated with DNA damage and oxidative stress, including members of the PerR and DinR regulons.
- Mild induction of HrcA and CtsR regulon members suggested potential protein oxidation.
- A significant influence on the sigmaB-dependent general stress response was observed.
Conclusions:
- Proteomic profiling provides a comprehensive method for evaluating drug actions.
- Anthracyclines elicit distinct proteomic responses in Bacillus subtilis, involving DNA repair, oxidative stress, and general stress pathways.
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