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Wang X, Luan Y, Hou J, Jiang T, Zhao Y, Song W, Wang L, Kong X, Guan J, Song D, Wang B, Li M. The protection effect of rhodionin against methicillin-resistant Staphylococcus aureus-induced pneumonia through sortase A inhibition. World J Microbiol Biotechnol 2022; 39:18. [PMID: 36409383 DOI: 10.1007/s11274-022-03457-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/02/2022] [Indexed: 11/22/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a zoonotic antibiotic-resistant pathogen that negatively impacts society from medical, veterinary, and societal standpoints. The search for alternative therapeutic strategies and innovative anti-infective agents is urgently needed. Among the pathogenic mechanisms of Staphylococcus aureus (S. aureus), sortase A is a virulence factor of great concern because it is highly linked with the ability of MRSA to invade the host. In this study, we identified that rhodionin, a natural compound of flavonoid glucosides, effectively inhibited the activity of SrtA without affecting the survival and growth of bacteria, and its half maximal inhibitory concentration (IC50) value was 22.85 μg/mL. In vitro, rhodionin prominently attenuated the virulence-related phenotype of SrtA by reducing the adhesion of S. aureus to fibrinogen, reducing the capacity of protein A (SpA) on the bacterial surface and biofilm formation. Subsequently, fluorescence quenching and molecular docking were performed to verify that rhodionin directly bonded to SrtA molecule with KA value of 6.22 × 105 L/mol. More importantly, rhodionin showed a significant protective effect on mice pneumonia model and improved the survival rate of mice. According to the above findings, rhodionin achieved efficacy in the treatment of MRSA-induced infections, which holds promising potential to be developed into a candidate used for MRSA-related infections.
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Affiliation(s)
- Xingye Wang
- Changchun University of Chinese Medicine, Changchun, China.,The Third Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Yanhe Luan
- The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Juan Hou
- Changchun University of Chinese Medicine, Changchun, China
| | - Tao Jiang
- Changchun University of Chinese Medicine, Changchun, China
| | - Yicheng Zhao
- Changchun University of Chinese Medicine, Changchun, China
| | - Wu Song
- Changchun University of Chinese Medicine, Changchun, China
| | - Li Wang
- Changchun University of Chinese Medicine, Changchun, China
| | - Xiangri Kong
- Changchun University of Chinese Medicine, Changchun, China.,The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Jiyu Guan
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Danning Song
- Changchun University of Chinese Medicine, Changchun, China.
| | - Bingmei Wang
- Changchun University of Chinese Medicine, Changchun, China.
| | - Mingquan Li
- Changchun University of Chinese Medicine, Changchun, China. .,The Third Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China. .,The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China.
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