Frontline Science: Employing enzymatic treatment options for management of ocular biofilm-based infections
| Autor: | Antonio DiGiandomenico, David B. Sykes, Rossen Mirchev, Mihaela Gadjeva, Jennifer Geddes-McAlister, Emilia Guy, Abirami Kugadas, Michael K. Mansour |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Phagocytosis Immunology Infections Eye Infections Bacterial Keratitis Microbiology Cornea Mice 03 medical and health sciences 0302 clinical medicine Antibiotic resistance Species Specificity neutrophils alpha-Mannosidase medicine Animals Humans Immunology and Allergy Pseudomonas Infections Progenitor cell innate immunity Innate immune system Bacteria biology Pseudomonas Biofilm Cell Biology medicine.disease biology.organism_classification In vitro 3. Good health P. aeruginosa 030104 developmental biology Highlighted Article Biofilms 030220 oncology & carcinogenesis Pseudomonas aeruginosa Spotlight on Leading Edge Research |
| Zdroj: | Journal of Leukocyte Biology |
| Popis: | Pseudomonas aeruginosa-induced corneal keratitis is a sight-threatening disease. The rise of antibiotic resistance among P. aeruginosa keratitis isolates makes treatment of this disease challenging, emphasizing the need for alternative therapeutic modalities. By comparing the responses to P. aeruginosa infection between an outbred mouse strain (Swiss Webster, SW) and a susceptible mouse strain (C57BL6/N), we found that the inherent neutrophil-killing abilities of these strains correlated with their susceptibility to infection. Namely, SW-derived neutrophils were significantly more efficient at killing P. aeruginosa in vitro than C57BL6/N-derived neutrophils. To interrogate whether the distinct neutrophil killing capacities were dependent on endogenous or exogenous factors, neutrophil progenitor cell lines were generated. The in vitro differentiated neutrophils from either SW or C57BL6/N progenitors retained the differential killing abilities, illustrating that endogenous factors conferred resistance. Consistently, quantitative LC-MS/MS analysis revealed strain-specific and infection-induced alterations of neutrophil proteomes. Among the distinctly elevated proteins in the SW-derived proteomes were α-mannosidases, potentially associated with protection. Inhibition of α-mannosidases reduced neutrophil bactericidal functions in vitro. Conversely, topical application of α-mannosidases reduced bacterial biofilms and burden of infected corneas. Cumulatively, these data suggest novel therapeutic approaches to control bacterial biofilm assembly and improve bacterial clearance via enzymatic treatments. |
| Databáze: | OpenAIRE |
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