Pheromone effect of estradiol regulates the conjugative transfer of pCF10 carrying antibiotic resistance genes

Yang, Xiaobo; Niu, Yuanyuan; Yang, Yutong; Zhou, Hongrui; Li, Jing; Fu, Xinyue; Shen, Zhiqiang; Wang, Jingfeng; Qiu, Zhigang

doi:10.1016/j.jhazmat.2023.131087

Cited by 5 publications

(3 citation statements)

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“…All the E. faecalis used herein were derived from E. faecalis OG1RF (ATCC 47077). The OG1RF∆ ccfA strain was constructed in our lab as outlined in Yang et al (2023) . Supplementary Text S1 presents the details.…”

Section: Methodsmentioning

confidence: 99%

“…Intrinsic resistance is determined by chromosomes, and different bacterial cell structures and chemical compositions make them naturally insensitive to some antibacterial drugs. Acquired resistance can occur via several methods, including genetic mutations ( Roberts et al, 2021 ) and plasmid-mediated horizontal gene transfer ( Yang et al, 2023 ). Efforts to mitigate AMR involve various removal mechanisms, including antibiotic stewardship programs ( Pallares et al, 2022 ), wastewater treatment ( Łuczkiewicz et al, 2010 ) and bioremediation ( Apreja et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

“…According to research, E. faecalis possesses a robust cell wall ( Canfield et al, 2023 ), making it inherently resistant ( Korir et al, 2019 ) to various antibiotics. Moreover, it readily acquires resistance via the uptake of resistant plasmids ( Tomita et al, 2023 ; Yang et al, 2023 ), transposons ( Dale et al, 2015 ), or genetic mutations ( García-Solache and Rice, 2019 ). Due to the severity of E. faecalis resistance, there are few antibiotics available for the clinical treatment of Enterococcus infections.…”

Section: Introductionmentioning

confidence: 99%

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Pheromone cCF10 inhibits the antibiotic persistence of Enterococcus faecalis by modulating energy metabolism

Zhu,

Yang,

et al. 2024

Front. Microbiol.

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IntroductionBacterial resistance presents a major challenge to both the ecological environment and human well-being, with persistence playing a key role. Multiple studies were recently undertaken to examine the factors influencing the formation of persisters and the underlying process, with a primary focus on Gram-negative bacteria and Staphylococcus aureus (Gram-positive bacteria). Enterococcus faecalis (E. faecalis) is capable of causing a variety of infectious diseases, but there have been few studies of E. faecalis persisters. Previous studies have shown that the sex pheromone cCF10 secreted by E. faecalis induces conjugative plasmid transfer. However, whether the pheromone cCF10 regulates the persistence of E. faecalis has not been investigated.MethodsAs a result, we investigated the effect and potential molecular mechanism of pheromone cCF10 in regulating the formation of persisters in E. faecalis OG1RF using a persistent bacteria model.Results and discussionThe metabolically active E. faecalis OG1RF reached a persistence state and temporarily tolerated lethal antibiotic concentrations after 8 h of levofloxacin hydrochloride (20 mg/mL) exposure, exhibiting a persistence rate of 0.109 %. During the growth of E. faecalis OG1RF, biofilm formation was a critical factor contributing to antibiotic persistence, whereas 10 ng/mL cCF10 blocked persister cell formation. Notably, cCF10 mediated the antibiotic persistence of E. faecalis OG1RF via regulating metabolic activity rather than suppressing biofilm formation. The addition of cCF10 stimulated the Opp system and entered bacterial cells, inhibiting (p)ppGpp accumulation, thus maintaining the metabolically active state of bacteria and reducing persister cell generation. These findings offer valuable insights into the formation, as well as the control mechanism of E. faecalis persisters.

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Section: Methodsmentioning

confidence: 99%