Activity of mammalian peptidoglycan-targeting immunity against Pseudomonas aeruginosa
Gabriel Torrens1, Maria Escobar-Salom1, Antonio Oliver1
1Servicio de Microbiología and Unidad de Investigación, Hospital Universitari Son Espases-Institut de Investigació Sanitària Illes Balears (IdISBa), Palma, Spain.
Abstract:
Pseudomonas aeruginosa is one of the most important opportunistic pathogens, whose clinical relevance is not only due to the high morbidity/mortality of the infections caused, but also to its striking capacity for antibiotic resistance development. In the current scenario of a shortage of effective antipseudomonal drugs, it is essential to have thorough knowledge of the pathogen's biology from all sides, so as to find weak points for drug development. Obviously, one of these points could be the peptidoglycan, given its essential role for cell viability. Meanwhile, immune weapons targeting this structure could constitute an excellent model to be taken advantage of in order to design new therapeutic strategies. In this context, this review gathers all the information regarding the activity of mammalian peptidoglycan-targeting innate immunity (namely lysozyme and peptidoglycan recognition proteins), specifically against P. aeruginosa. All the published studies were considered, from both in vitro and in vivo fields, including works that envisage these weapons as options not only to potentiate their innate effects within the host or for use as exogenously administered treatments, but also harnessing their inflammatory and immune regulatory capacity to finally reduce damage in the patient. Altogether, this review has the objective of anticipating and discussing whether these innate immune resources, in combination or not with other drugs attacking certain P. aeruginosa targets leading to its increased sensitization, could be valid therapeutic antipseudomonal allies.
Insights
Mammalian innate immunity, including lysozyme and peptidoglycan recognition proteins, shows potential against Pseudomonas aeruginosa. These immune components offer novel therapeutic strategies to combat antibiotic-resistant infections.
Area of Science:
- Microbiology
- Immunology
- Pharmacology
Background:
- Pseudomonas aeruginosa is a critical opportunistic pathogen known for high morbidity and significant antibiotic resistance.
- A shortage of effective antipseudomonal drugs necessitates exploring novel therapeutic targets and strategies.
- Peptidoglycan, essential for bacterial cell viability, represents a potential weak point for drug development.
Purpose of the Study:
- To review and synthesize information on mammalian peptidoglycan-targeting innate immunity against Pseudomonas aeruginosa.
- To evaluate the potential of lysozyme and peptidoglycan recognition proteins as therapeutic agents.
- To discuss the use of these innate immune components as standalone treatments or in combination therapies.
Main Methods:
- Comprehensive literature review of in vitro and in vivo studies.
- Analysis of research on lysozyme and peptidoglycan recognition proteins activity against P. aeruginosa.
- Evaluation of studies exploring therapeutic applications and immune regulatory capacity.
Main Results:
- Mammalian innate immune components like lysozyme and peptidoglycan recognition proteins exhibit activity against P. aeruginosa.
- These components can be leveraged to potentiate innate effects or administered exogenously.
- Their immune regulatory capacity may reduce patient damage.
Conclusions:
- Lysozyme and peptidoglycan recognition proteins are promising therapeutic allies against P. aeruginosa.
- Combination therapies involving these innate immune resources could enhance P. aeruginosa sensitization to other drugs.
- Further research into these innate immune mechanisms could lead to new antipseudomonal strategies.
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