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Jonblat S, As-Sadi F, Zibara K, Sabban ME, Dermesrobian V, Khoury AE, Kallassy M, Chokr A. Staphylococcus epidermidis biofilm assembly and self-dispersion: bacteria and matrix dynamics. Int Microbiol 2023:10.1007/s10123-023-00433-2. [PMID: 37824024 DOI: 10.1007/s10123-023-00433-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/17/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
Staphylococcus epidermidis, despite being a commensal of human skin and mucosa, is a major nosocomial pathogen implicated in device-associated infections. The dissemination of infection to other body sites is related to biofilm dispersal. This study focused on the dispersion stage of S. epidermidis CIP 444 biofilm, with the assessment of biofilm matrix composition in a time-dependent experiment (7 days extended) with 3 independent repetitions, using confocal laser scanning microcopy (CLSM) in association with ZEN 3.4 blue edition, COMSTAT, and ImageJ software. SYTO-9, propidium iodide (PI), DID'OIL, FITC, and calcofluor white M2R (CFW) were used to stain biofilm components. The results indicated that the biomass of dead cells increased from 15.18 ± 1.81 µm3/µm2 (day 3) to 23.15 ± 6.075 µm3/µm2 (day 4), along with a decrease in alive cells' biomass from 22.75 ± 2.968 µm3/µm2 (day 3) to 18.95 ± 5.713 µm3/µm2 (day 4). When the intensities were measured after marking the biofilm components, in a 24-h-old biofilm, polysaccharide made up the majority of the investigated components (52%), followed by protein (18.9%). Lipids make up just 11.6% of the mature biofilm. Protein makes up the largest portion (48%) of a 4-day-old biofilm, followed by polysaccharides (37.8%) and lipids (7.27%). According to our findings, S. epidermidis CIP 444 dispersion occurred on day 4 of incubation, and new establishment of the biofilm occurred on day 7. Remarkable changes in biofilm composition will pave the way for a new approach to understanding bacterial strategies inside biofilms and finding solutions to their impacts in the medical field.
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Affiliation(s)
- Suzanne Jonblat
- Research Laboratory of Microbiology (RLM), Department of Life and Earth Sciences, Faculty of Sciences I, Lebanese University, Hadat Campus, Beirut, Lebanon
- Platform of Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Sciences and Technologies, Lebanese University, Hadat Campus, Beirut, Lebanon
- Functional Genomics and Proteomic Laboratory, Faculté Des Sciences, Université Saint-Joseph de Beyrouth, Campus Des Sciences Et Technologies, Mar Roukos, Matn, Lebanon
- Centre d'Analyses Et de Recherche (CAR), Unité de Recherche Technologies Et Valorisation Agro-Alimentaire (UR-TVA), Faculté Des Sciences, Université Saint-Joseph de Beyrouth, Campus Des Sciences Et Technologies, Mar Roukos, Matn, Lebanon
| | - Falah As-Sadi
- Research Laboratory of Microbiology (RLM), Department of Life and Earth Sciences, Faculty of Sciences I, Lebanese University, Hadat Campus, Beirut, Lebanon
- Department of Plant Production, Faculty of Agriculture and Veterinary Medicine, Lebanese University, Beirut, 999095, Lebanon
| | - Kazem Zibara
- ER045, Laboratory of Stem Cells, DSST, Biology Department, Faculty of Sciences-I, Lebanese University, Beirut, Lebanon
| | - Marwan El Sabban
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Bliss Street, Beirut, 1107, Lebanon
| | - Vera Dermesrobian
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Bliss Street, Beirut, 1107, Lebanon
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunity, KU Leuven, Louvain, Belgium
| | - André El Khoury
- Centre d'Analyses Et de Recherche (CAR), Unité de Recherche Technologies Et Valorisation Agro-Alimentaire (UR-TVA), Faculté Des Sciences, Université Saint-Joseph de Beyrouth, Campus Des Sciences Et Technologies, Mar Roukos, Matn, Lebanon
| | - Mireille Kallassy
- Functional Genomics and Proteomic Laboratory, Faculté Des Sciences, Université Saint-Joseph de Beyrouth, Campus Des Sciences Et Technologies, Mar Roukos, Matn, Lebanon
| | - Ali Chokr
- Research Laboratory of Microbiology (RLM), Department of Life and Earth Sciences, Faculty of Sciences I, Lebanese University, Hadat Campus, Beirut, Lebanon.
- Platform of Research and Analysis in Environmental Sciences (PRASE), Doctoral School of Sciences and Technologies, Lebanese University, Hadat Campus, Beirut, Lebanon.
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