Insights into the Selective Bactericidal Activity of W(Mo)Se2 Nanosheets for Therapy of Pathogenic Bacterial Infections
- Title
- Insights into the Selective Bactericidal Activity of W(Mo)Se2 Nanosheets for Therapy of Pathogenic Bacterial Infections
- Author
- 김종호
- Keywords
- Antimicrobial; Bacterial infection; Narrow-spectrum bactericidal activity; Multidrug resistance; TMD nanosheet antibiotics
- Issue Date
- 2023-05-24
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- CHEMICAL ENGINEERING JOURNAL, v. 468, Article NO 14372
- Abstract
- The abuse and misuse of broad-spectrum antibiotics cause drug resistance in bacteria, which compromises their benefits and thereby increases the demand for new bactericidal mechanisms to reduce the emergence of multidrug-resistant pathogenic bacteria. Herein, ultrathin WSe2 and MoSe2 nanosheets are exfoliated and functionalized with poly(acrylic acid) (PAA) (PAA-WSe2 and PAA-MoSe2) in an aqueous solution as narrowspectrum or species-specific antibiotics for the treatment of bacterial infections. PAA-WSe2 nanosheets exhibit narrow-spectrum bactericidal activity with low minimum inhibitory concentrations only for gram-positive bacteria, including multidrug-resistant S. aureus, and PAA-MoSe2 displays species-specific antimicrobial activity against S. aureus without external stimuli. Mechanistic studies have revealed that the redox reactions of PAAWSe2 nanosheets mediated by lipoteichoic acid of gram-positive bacteria to produce a more active element Se4+ are responsible for their narrow-spectrum bactericidal activity against gram-positive bacteria. Finally, the PAAWSe2 nanosheets effectively eradicate the bacteria in S. aureus-infected mice, leading to excellent therapeutic efficacy in infected wounds. This strategy, based on narrow-spectrum transition metal dichalcogenide antibiotics, can provide an alternative route for the effective treatment of various bacterial infections.
- URI
- https://information.hanyang.ac.kr/#/eds/detail?an=S1385894723024580&dbId=edselphttps://repository.hanyang.ac.kr/handle/20.500.11754/190027
- ISSN
- 1385-8947
- DOI
- 10.1016/j.cej.2023.143727
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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