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Jordan O, Gan BH, Alwan S, Perron K, Sublet E, Ducret V, Ye H, Borchard G, Reymond JL, Patrulea V. Highly Potent Cationic Chitosan Derivatives Coupled to Antimicrobial Peptide Dendrimers to Combat Pseudomonas aeruginosa. Adv Healthc Mater 2024:e2304118. [PMID: 38412457 DOI: 10.1002/adhm.202304118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Indexed: 02/29/2024]
Abstract
The burden of bacterial wound infections has considerably increased due to antibiotic resistance to most of the currently available antimicrobial drugs. Herein, for the first time, a chemical coupling of two cationic N-aryl (pyridyl and aminocinnamyl) chitosan derivatives to antimicrobial peptide dendrimers (AMPDs) of different generations (first, second, and third) via thioether-haloacetyl reaction is reported. The new chitosan-AMPD conjugates show high selectivity by killing Pseudomonas aeruginosa and very low toxicity toward mammalian cells, as well as extremely low hemolysis to red blood cells. Electron microscopy reveals that the new chitosan derivatives coupled to AMPD destroy both the inner and outer membranes of Gram-negative P. aeruginosa. Moreover, chitosan-AMPD conjugates show synergetic effects within extremely low concentrations. The new chitosan-AMPD conjugates can be used as potent antimicrobial therapeutic agents, to eradicate pathogens such as those present in acute and chronic infected wounds.
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Affiliation(s)
- Olivier Jordan
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
| | - Bee Ha Gan
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, Bern, 3012, Switzerland
| | - Sari Alwan
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
| | - Karl Perron
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest-Ansermet, Geneva, 1211, Switzerland
| | - Emmanuelle Sublet
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
| | - Verena Ducret
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest-Ansermet, Geneva, 1211, Switzerland
| | - Hua Ye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, OX3 7DQ, Oxford, UK
| | - Gerrit Borchard
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, Bern, 3012, Switzerland
| | - Viorica Patrulea
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, Geneva, 1211, Switzerland
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, OX3 7DQ, Oxford, UK
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