Ying-Tsun Chen, Gaurav Kumar Lohia, Samantha Chen, Sebastián A Riquelme
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Immunometabolic Regulation of Bacterial Infection, Biofilms, and Antibiotic Susceptibility.
Background: Upon infection, mucosal tissues activate a brisk inflammatory response to clear the pathogen, i.e., resistance to disease. Resistance to disease is orchestrated by tissue-resident macrophages, which undergo profound metabolic reprogramming after sensing the pathogen. These metabolically activated macrophages release many inflammatory factors, which promote their bactericidal function. However, in immunocompetent individuals, pathogens like Pseudomonas aeruginosa, Staphylococcus aureus, and Salmonella evade this type of immunity, generating communities that thrive for the long term.
Summary: These organisms develop features that render them less susceptible to eradication, such as biofilms and increased tolerance to antibiotics. Furthermore, after antibiotic therapy withdrawal, "persister" cells rapidly upsurge, triggering inflammatory relapses that worsen host health. How these pathogens persisted in inflamed tissues replete with activated macrophages remains poorly understood.
Key messages: In this review, we discuss recent findings indicating that the ability of P. aeruginosa, S. aureus, and Salmonella to evolve biofilms and antibiotic tolerance is promoted by the similar metabolic routes that regulate macrophage metabolic reprogramming.
期刊介绍:
The ''Journal of Innate Immunity'' is a bimonthly journal covering all aspects within the area of innate immunity, including evolution of the immune system, molecular biology of cells involved in innate immunity, pattern recognition and signals of ‘danger’, microbial corruption, host response and inflammation, mucosal immunity, complement and coagulation, sepsis and septic shock, molecular genomics, and development of immunotherapies. The journal publishes original research articles, short communications, reviews, commentaries and letters to the editors. In addition to regular papers, some issues feature a special section with a thematic focus.