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Anti-Pathogenic Properties of the Combination of a T3SS Inhibitory Halogenated Pyrrolidone with C-30 Furanone
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Anti-Pathogenic Properties of the Combination of a T3SS Inhibitory Halogenated Pyrrolidone with C-30 Furanone
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Journal Article
Anti-Pathogenic Properties of the Combination of a T3SS Inhibitory Halogenated Pyrrolidone with C-30 Furanone
2021
Overview
Antimicrobial resistance is one of the current public health challenges to be solved. The World Health Organization (WHO) has urgently called for the development of strategies to expand the increasingly limited antimicrobial arsenal. The development of anti-virulence therapies is a viable option to counteract bacterial infections with the possibility of reducing the generation of resistance. Here we report on the chemical structures of pyrrolidones DEXT 1–4 (previously identified as furan derivatives) and their anti-virulence activity on Pseudomonas aeruginosa strains. DEXT 1–4 were shown to inhibit biofilm formation, swarming motility, and secretion of ExoU and ExoT effector proteins. Also, the anti-pathogenic property of DEXT-3 alone or in combination with furanone C-30 (quorum sensing inhibitor) or MBX-1641 (type III secretion system inhibitor) was analyzed in a model of necrosis induced by P. aeruginosa PA14. All treatments reduced necrosis; however, only the combination of C-30 50 µM with DEXT-3 100 µM showed significant inhibition of bacterial growth in the inoculation area and systemic dispersion. In conclusion, pyrrolidones DEXT 1–4 are chemical structures capable of reducing the pathogenicity of P. aeruginosa and with the potential for the development of anti-virulence combination therapies.
Publisher
MDPI AG,MDPI
Subject
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ anti-virulence combination therapies
/ Bacteria
/ Biofilms
/ Humans
/ Hydrocarbons, Halogenated - chemistry
/ Hydrocarbons, Halogenated - pharmacology
/ Mice
/ Motility
/ Necrosis
/ Proteins
/ Pseudomonas aeruginosa - growth & development
/ Pseudomonas aeruginosa - pathogenicity
/ Pseudomonas Infections - drug therapy
/ Pseudomonas Infections - metabolism
/ Pyrrolidinones - pharmacology
/ Quorum Sensing - drug effects
/ Type III Secretion Systems - antagonists & inhibitors
