Evaluation of Gold Complexes to Address Bacterial Resistance, Quorum Sensing, Biofilm Formation, and Their Antiviral Properties against Bacteriophages
Abstract
:1. Introduction
2. Materials and Methods
2.1. Gold Compounds
2.2. Bacteria and Culture Conditions
2.3. Bacteriophages
2.4. Antibacterial Activity
Determination of the Minimum Inhibitory Concentration (MIC)
2.5. Anti-Quorum Sensing Activity
2.6. Antibiofilm Activity
2.7. Antiviral Activity
2.8. Statistical Analysis
3. Results
3.1. Antibacterial Activity
3.2. Anti-Quorum Sensing Activity
3.3. Antibiofilm Activity
3.4. Antiviral Activity
4. Discussion
4.1. Antibacterial Activity
4.2. Anti-Quorum Sensing and Antibiofilm Activity
4.3. Antiviral Activity
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Formula | Abbreviation | Net Charge | MW (g/mol) | CAS Number | Purity |
---|---|---|---|---|---|
C3H9PAuCl | 1 | +1 | 308.50 | 15278-97-4 | 99% |
C18H15PAuCl | 2 | +1 | 494.71 | 14243-64-2 | ≥99.9% |
C6H4NAuCl2O2 | 3 | +3 | 389.97 | 88215-41-2 | 99% |
C27H36AuClN2 | 4 | +1 | 621.01 | 852445-83-1 | 99% |
Bacteria | Origin and Characteristics | Source |
---|---|---|
Escherichia coli DSM 1077 | K12 galR arg nad | German Collection of Microorganisms |
Escherichia coli DSM 5210 | Hfr 3000 U 432. Host of phage Qß (DSM 5696) | German Collection of Microorganisms |
Escherichia coli DSM 498 | K12 wildtype. Host of phage Ffm (DSM 18264) | German Collection of Microorganisms |
Escherichia coli I731940778-1 | Multi-resistant. Isolated from urine | Laboratory of Microbiology, ABC-RI, UAlg 1 |
Staphylococcus aureus ATCC 6538 | Wound | American Type Culture Collection |
Staphylococcus aureus methicillin-resistant 15 (MRSA 15) | Clinic | Laboratory of Microbiology, ABC-RI, UAlg 1 |
Staphylococcus aureus methicillin-resistant 16 (MRSA 16) | Clinic | Laboratory of Microbiology, ABC-RI, UAlg 1 |
Chromobacterium violaceum (CV026) | Biosensor strain of the production of homoserine lactone (HgR, cvil::Tn5 xylE, KanR, higher spontaneous resistance StrR) | Gift of Professor Mondher El Jaziri of the University Libre of Brussels |
Bacteriophages | Family | Host |
Escherichia coli phage Ffm DSM 18264 | Autographiviridae | For propagation, E. coli DSM 498, rough-LPS Salmonella mutants are also receptors |
Escherichia coli phage Qbeta (Enterobacteria phage Qbeta) DSM 13768 | Leviviridae | For propagation E. coli DSM 5210 |
Bacteria | MIC (μg/mL) 1 | MBC (μg/mL) 1 |
---|---|---|
S. aureus ATCC 6538 | 0.59 | 4.63 |
MRSA12 | 1.16 | 18.5 |
MRSA15 | 1.16 | 18.5 |
E. coli DSM 1077 | 4.63 | 9.25 |
Multi-resistant E. coli I731940778-1 | 9.25 | 37.1 |
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Marques, A.; Carabineiro, S.A.C.; Aureliano, M.; Faleiro, L. Evaluation of Gold Complexes to Address Bacterial Resistance, Quorum Sensing, Biofilm Formation, and Their Antiviral Properties against Bacteriophages. Toxics 2023, 11, 879. https://doi.org/10.3390/toxics11110879
Marques A, Carabineiro SAC, Aureliano M, Faleiro L. Evaluation of Gold Complexes to Address Bacterial Resistance, Quorum Sensing, Biofilm Formation, and Their Antiviral Properties against Bacteriophages. Toxics. 2023; 11(11):879. https://doi.org/10.3390/toxics11110879
Chicago/Turabian StyleMarques, Ana, Sónia A. C. Carabineiro, Manuel Aureliano, and Leonor Faleiro. 2023. "Evaluation of Gold Complexes to Address Bacterial Resistance, Quorum Sensing, Biofilm Formation, and Their Antiviral Properties against Bacteriophages" Toxics 11, no. 11: 879. https://doi.org/10.3390/toxics11110879