Disulfiram Attenuates Acinetobacter baumannii-Induced Hyperinflammation by Regulating Inflammatory Pathways: Insights...

Area of Science:

• Microbiology
• Immunology
• Pharmacology

Background:

• Carbapenem-resistant Acinetobacter baumannii (CRAB) presents a significant challenge in treating sepsis.
• Disulfiram (DSF) shows promise for its antibacterial and anti-inflammatory properties against resistant bacteria.
• The anti-inflammatory mechanisms of DSF in CRAB infections require further elucidation.

Purpose of the Study:

• To investigate the effects of DSF on inflammatory responses during CRAB infection.
• To explore the molecular mechanisms underlying DSF's anti-inflammatory actions in CRAB-infected macrophages.

Main Methods:

• Utilized human THP-1 cell-derived macrophages infected with CRAB.
• Assessed the impact of DSF on NF-κB activity, NLRP3 inflammasome formation, and cytokine secretion (IL-1β, IL-6, TNF-α).
• Employed RNA sequencing to analyze transcriptomic changes in DSF-treated cells.

Main Results:

• DSF treatment inhibited NF-κB activity and NLRP3 inflammasome formation in infected macrophages.
• DSF significantly decreased the expression and secretion of pro-inflammatory cytokines IL-1β, IL-6, and TNF-α.
• Transcriptomic analysis revealed DSF downregulated genes in key inflammatory pathways, including NF-κB and toll-like receptor signaling.

Conclusions:

• DSF demonstrates potent anti-inflammatory effects against CRAB-induced inflammation by modulating critical signaling pathways.
• DSF is a promising candidate for developing novel therapeutic strategies against CRAB infections.
• Further in vivo and clinical studies are warranted to validate DSF's efficacy and safety.