期刊
BIOORGANIC CHEMISTRY
卷 119, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bioorg.2021.105550
关键词
Nanomedicine; Alternating copolymer; Cationic polymer; Wound healing; Antibacterial activity; Antibiofilm activity
资金
- Iran Science Elites Federation
- Research Council of Iran University of Medical Sciences
- Iran University of Medical Science [Grnat 97-3-75-13318]
- ISEF Grant
- [97-3-75-13318]
This study synthesized novel multifunctional cationic nanopolymers that exhibited excellent antibacterial activity and stimulated wound healing without affecting mammalian cells, showing potential for eradicating multidrug resistant bacterial infections.
Infectious diseases caused by new or unknown bacteria and viruses, such as anthrax, cholera, tuberculosis and even COVID-19, are a major threat to humanity. Thus, the development of new synthetic compounds with efficient antimicrobial activity is a necessity. Herein, rationally designed novel multifunctional cationic alter -nating copolymers were directly synthesized through a step-growth polymerization reaction using a bivalent electrophilic cross-linker containing disulfide bonds and a diamine heterocyclic ring. To optimize the activity of these alternating copolymers, several different diamines and cross-linkers were explored to find the highest antibacterial effects. The synthesized nanopolymers not only displayed good to excellent antibacterial activity as judged by minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa, and Escherichia coli, but also reduced the number of biofilm cells even at low concentrations, without killing mammalian cells. Furthermore, in vivo ex-periments using infected burn wounds in mice demonstrated good antibacterial activity and stimulated wound healing, without causing systemic inflammation. These findings suggest that the multifunctional cationic nanopolymers have potential as a novel antibacterial agent for eradication of multidrug resistant bacterial infections.
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