Détail du document
Identifiant
doi:10.1186/s12866-023-03113-3...
Auteur
Ji, Xia Yu, Ruojing Zhu, Meilian Zhang, Cuilin Zhou, Libin Cai, Tianshu Li, WeiweiLangue
enEditeur
BioMed Central
Catégorie
Mycology
Année
2023
Date de référencement
22/11/2023
Mots clés
kanamycin diadenosine tetraphosphate biofilm ... quorum sensing treated strain bacteria kanamycinRésumé
Background The dinucleotide alarmone diadenosine tetraphosphate (Ap4A), which is found in cells, has been shown to affect the survival of bacteria under stress.
Results Here, we labeled Ap4A with biotin and incubated the labeled Ap4A with the total proteins extracted from kanamycin-treated Escherichia coli to identify the Ap4A binding protein in bacteria treated with kanamycin.
Liquid chromatography‒mass spectrometry (LCMS) and bioinformatics were used to identify novel proteins that Ap4A interacts with that are involved in biofilm formation, quorum sensing, and lipopolysaccharide biosynthesis pathways.
Then, we used the apaH knockout strain of E. coli K12-MG1655, which had increased intracellular Ap4A, to demonstrate that Ap4A affected the expression of genes in these three pathways.
We also found that the swarming motility of the apaH mutant strain was reduced compared with that of the wild-type strain, and under kanamycin treatment, the biofilm formation of the mutant strain decreased.
Conclusions These results showed that Ap4A can reduce the survival rate of bacteria treated with kanamycin by regulating quorum sensing (QS).
These effects can expand the application of kanamycin combinations in the treatment of multidrug-resistant bacteria.
Ji, Xia,Yu, Ruojing,Zhu, Meilian,Zhang, Cuilin,Zhou, Libin,Cai, Tianshu,Li, Weiwei, 2023, Diadenosine tetraphosphate modulated quorum sensing in bacteria treated with kanamycin, BioMed Central
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