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- Title
The synergistic activity of SBC3 in combination with Ebselen against Escherichia coli infection.
- Authors
Hao Chen; Qianqian Lu; Haoyue An; Juntong Li; Shuchu Shen; Xi Zheng; Wei Chen; Lu Wang; Jihong Li; Youqin Du; Yueqing Wang; Xiaowen Liu; Baumann, Marcus; Tacke, Matthias; Lili Zou; Jun Wang
- Abstract
Escherichia coli ranks as the number one clinical isolate in the past years in China according to The China Antimicrobial Surveillance Network (CHINET), and its multidrug-resistant (MDR) pathogenic strains account for over 160 million cases of dysentery and one million deaths per year. Here, our work demonstrates that E. coli is highly sensitive to the synergistic combination of SBC3 [1,3-Dibenzyl-4,5-diphenyl-imidazol-2-ylidene silver (I) acetate] and Ebselen, which shows no synergistic toxicity on mammalian cells. The proposed mechanism for the synergistic antibacterial effect of SBC3 in combination with Ebselen is based on directly inhibiting E. coli thioredoxin reductase and rapidly depleting glutathione, resulting in the increase of reactive oxygen species that cause bacterial cell death. Furthermore, the bactericidal efficacy of SBC3 in combination with Ebselen has been confirmed in mild and acute peritonitis mice. In addition, the five most difficult to treat Gram-negative bacteria (including E. coli, Acinetobacter baumannii, Enterobacter cloacae, Klebsiella pneumoniae, and Pseudomonas aeruginosa) are also highly sensitive to a synergistic combination of SBC3 and Ebselen. Thus, SBC3 in combination with Ebselen has potential as a treatment for clinically important Gramnegative bacterial infections.
- Subjects
CHINA; ESCHERICHIA coli diseases; ENTEROBACTER cloacae; EBSELEN; ESCHERICHIA coli; ACINETOBACTER baumannii; GRAM-negative bacteria
- Publication
Frontiers in Pharmacology, 2022, Vol 13, p01
- ISSN
1663-9812
- Publication type
Article
- DOI
10.3389/fphar.2022.1080281