دورية أكاديمية

Oxidized glutathione reverts carbapenem resistance in blaNDM-1-carrying Escherichia coli.

التفاصيل البيبلوغرافية
العنوان: Oxidized glutathione reverts carbapenem resistance in blaNDM-1-carrying Escherichia coli.
المؤلفون: Ye, Dongyang, Li, Xiaowei, Zhao, Liang, Liu, Saiwa, Jia, Xixi, Wang, Zhinan, Du, Jingjing, Ge, Lirui, Shen, Jianzhong, Xia, Xi
المصدر: EMBO Molecular Medicine; May2024, Vol. 16 Issue 5, p1051-1062, 12p
مستخلص: The emergence of drug-resistant Enterobacteriaceae carrying plasmid-mediated β-lactamase genes has become a significant threat to public health. Organisms in the Enterobacteriaceae family containing New Delhi metallo-β-lactamase‑1 (NDM-1) and its variants, which are capable of hydrolyzing nearly all β-lactam antibacterial agents, including carbapenems, are referred to as superbugs and distributed worldwide. Despite efforts over the past decade, the discovery of an NDM-1 inhibitor that can reach the clinic remains a challenge. Here, we identified oxidized glutathione (GSSG) as a metabolic biomarker for blaNDM-1 using a non-targeted metabolomics approach and demonstrated that GSSG supplementation could restore carbapenem susceptibility in Escherichia coli carrying blaNDM-1 in vitro and in vivo. We showed that exogenous GSSG promotes the bactericidal effects of carbapenems by interfering with intracellular redox homeostasis and inhibiting the expression of NDM-1 in drug-resistant E. coli. This study establishes a metabolomics-based strategy to potentiate metabolism-dependent antibiotic efficacy for the treatment of antibiotic-resistant bacteria. Synopsis: blaNDM-1 mediates carbapenem resistance via a dual resistance mechanism. GSSG can enhance intracellular drug accumulation in Escherichia coli by inhibiting the expression of blaNDM-1 and induce an elevation in ROS levels to restore antibiotic susceptibility in blaNDM-1-carrying E. coli. blaNDM-1 induces metabolic changes in E. coli, regulating the intracellular metabolic state towards an antioxidant stress response to counteract the bactericidal effect caused by antibiotic-induced ROS. GSSG promotes intracellular antibiotic drug accumulation by inhibiting the expression of blaNDM-1 to influence hydrolysis of drugs. GSSG combined with carbapenems significantly reduces the bacterial load in tissues and lethality in infected mice. blaNDM-1 mediates carbapenem resistance via a dual resistance mechanism. GSSG can enhance intracellular drug accumulation in Escherichia coli by inhibiting the expression of blaNDM-1 and induce an elevation in ROS levels to restore antibiotic susceptibility in blaNDM-1-carrying E. coli. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات: Complementary Index