Identification and efficacy of glycine, serine and threonine metabolism in potentiating kanamycin-mediated killing of Edwardsiella piscicida

Journal of Proteomics
Jin-Zhou YeBo Peng

Abstract

We previously showed that glucose potentiated kanamycin to kill multidrug-resistant Edwardsiella piscicida through activation of the TCA cycle. However, whether other regulatory mechanism is involved requires further investigation. By quantitative proteomics technology, iTRAQ, we systematically mapped the altered proteins in the presence of glucose and identified 94 differentially expressed proteins. The analysis of the altered proteins by pathways, amino acid biosynthesis and metabolism were enriched. And the most significantly altered eight amino acids tyrosine, phenylalanine, valine, leucine, isoleucine, glycine, serine and threonine were investigated for their potentiation of kanamycin to kill EIB202, where glycine, serine and threonine showed the strongest efficacy than the others. The combinations of glycine and serine or glucose with glycine, serine or threonine had the best effects. Moreover, pyruvate dehydrogenase, α-ketoglutarate dehydrogenase and succinate dehydrogenase activities were increased as well as the proton motive force (PMF) and intracellular kanamycin. Finally, inhibitors that disrupt PMF production abolished the potentiation. These results shed light on the mechanism of how glucose promoting the amino ac...Continue Reading

Citations

Oct 17, 2019·Expert Review of Proteomics·Bo PengXuanxian Peng
Oct 31, 2019·Archives of Microbiology·Shridhar S Paranjape, Ravindranath Shashidhar
Oct 30, 2020·Biomedical Chromatography : BMC·Dong ZhangYueTao Liu
Jun 19, 2021·Computational and Structural Biotechnology Journal·Teresa Gil-GilJosé Luis Martínez
Dec 23, 2021·Science Translational Medicine·Xian-Liang ZhaoXuan-Xian Peng

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