1
|
Francis D, Veeramanickathadathil Hari G, Koonthanmala Subash A, Bhairaddy A, Joy A. The biofilm proteome of Staphylococcus aureus and its implications for therapeutic interventions to biofilm-associated infections. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 138:327-400. [PMID: 38220430 DOI: 10.1016/bs.apcsb.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Staphylococcus aureus is a major healthcare concern due to its ability to inflict life-threatening infections and evolve antibiotic resistance at an alarming pace. It is frequently associated with hospital-acquired infections, especially device-associated infections. Systemic infections due to S. aureus are difficult to treat and are associated with significant mortality and morbidity. The situation is worsened by the ability of S. aureus to form social associations called biofilms. Biofilms embed a community of cells with the ability to communicate with each other and share resources within a polysaccharide or protein matrix. S. aureus establish biofilms on tissues and conditioned abiotic surfaces. Biofilms are hyper-tolerant to antibiotics and help evade host immune responses. Biofilms exacerbate the severity and recalcitrance of device-associated infections. The development of a biofilm involves various biomolecules, such as polysaccharides, proteins and nucleic acids, contributing to different structural and functional roles. Interconnected signaling pathways and regulatory molecules modulate the expression of these molecules. A comprehensive understanding of the molecular biology of biofilm development would help to devise effective anti-biofilm therapeutics. Although bactericidal agents, antimicrobial peptides, bacteriophages and nano-conjugated anti-biofilm agents have been employed with varying levels of success, there is still a requirement for effective and clinically viable anti-biofilm therapeutics. Proteins that are expressed and utilized during biofilm formation, constituting the biofilm proteome, are a particularly attractive target for anti-biofilm strategies. The proteome can be explored to identify potential anti-biofilm drug targets and utilized for rational drug discovery. With the aim of uncovering the biofilm proteome, this chapter explores the mechanism of biofilm formation and its regulation. Furthermore, it explores the antibiofilm therapeutics targeted against the biofilm proteome.
Collapse
Affiliation(s)
- Dileep Francis
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India.
| | | | | | - Anusha Bhairaddy
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India
| | - Atheene Joy
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India
| |
Collapse
|
2
|
Namgoong S, Jung SY, Han SK, Kim AR, Dhong ES. Clinical experience with surgical debridement and simultaneous meshed skin grafts in treating biofilm-associated infection: an exploratory retrospective pilot study. J Plast Surg Hand Surg 2019; 54:47-54. [PMID: 31575315 DOI: 10.1080/2000656x.2019.1673170] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Current treatment guidelines for biofilm-associated infections (BAI) recommend repeated sharp/surgical debridement followed by treatment with antimicrobial agents until the wound becomes self-sustaining in terms of a positive wound-healing trajectory. However, complete removal of a biofilm is unlikely, and biofilms reform rapidly. We have treated BAI in patients with chronic diabetic ulcers using a meshed skin graft combined with negative pressure wound therapy (NPWT) immediately after surgical debridement, rather than waiting until the development of clean and healthy granulation tissue; the purpose of this exploratory study was to report the clinical results of this treatment strategy. This retrospective study included 75 patients with chronic diabetic ulcers who were treated for BAI by using surgical debridement, simultaneous meshed skin grafts, and NPWT. Healing time along with the percentage of complete wound closure within 12 weeks were evaluated; bacteria isolated from the wounds and their relation to the wound healing rate were investigated. All 75 wounds healed successfully, and the mean time for complete wound healing was 3.5 ± 1.8 weeks. In particular, 76% of wounds healed uneventfully without graft loss. A mean of 3.3 bacterial colonies/wound were isolated; however, no significant difference in wound healing was observed between the monomicrobial and polymicrobial groups. This exploratory study suggests that surgical debridement and simultaneous meshed skin grafts combined with NPWT may be successfully used to combat BAI in patients with chronic diabetic ulcers. We look forward to larger pivotal studies to confirm or refute these initially promising findings.
Collapse
Affiliation(s)
- Sik Namgoong
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Su-Young Jung
- Department of Plastic Surgery, Armed Forces Capital Hospital, Seongnam, Republic of Korea
| | - Seung-Kyu Han
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ae-Ree Kim
- Department of Pathology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Eun-Sang Dhong
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
3
|
Rivera MLC, Hassimotto NMA, Bueris V, Sircili MP, de Almeida FA, Pinto UM. Effect of Capsicum Frutescens Extract, Capsaicin, and Luteolin on Quorum Sensing Regulated Phenotypes. J Food Sci 2019; 84:1477-1486. [PMID: 31132155 DOI: 10.1111/1750-3841.14648] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 01/04/2023]
Abstract
Capsicum peppers have not been investigated as sources of quorum sensing (QS) inhibitors. This study aimed to identify compounds in pimenta-malagueta (Capsicum frutescens) and red pepper (Capsicum annuum) extracts and to evaluate their effect on violacein production in Chromobacterium violaceum ATCC 12472 and C. violaceum CV026, as well as biofilm formation (BF) in Pseudomonas aeruginosa PAO1 and Serratia marcescens MG1. Among the extracts, pimenta-malagueta methanolic extract (PMME) was chosen because it contained capsaicin, dihydrocapsaicin, and luteolin in greater amount than the other extracts. In general, PMME partially inhibited bacterial growth at 2.5 and 5.0 mg/mL, as well as capsaicin at 100 µg/mL and luteolin at 62.5, 125, and 250 µg/mL. At lower concentrations, PMME and luteolin reduced violacein production in C. violaceum ATCC 12472 without affecting growth, a result that was not observed with capsaicin. We show that violacein inhibition by PMME is likely due to luteolin. In silico docking evaluation showed that luteolin binds to the CviR QS regulator. Crystal violet staining and confocal microscopy revealed that BF was increased by PMME and capsaicin, being remarkably superior for P. aeruginosa PAO1 at 30 °C. Capsaicin is not an effective QS inhibitor, while luteolin should be further investigated for its potential effects in QS regulated phenotypes. PRACTICAL APPLICATION: Quorum sensing (QS) is a form of bacterial communication targeted for studies aiming to inhibit bacterial virulence. QS regulates phenotypes that influence microbial activities across many areas, including Food Science. Capsicum frutescens is a type of chili pepper consumed in Brazil, rich in bioactive compounds such as capsaicin (which gives its pungency) and luteolin (a phenolic compound). We show that C. frutescens extract and luteolin inhibit QS in a model bacterium, along with the possible molecular mechanism of inhibition. Capsaicin did not inhibit QS neither biofilm formation. Luteolin should be further investigated for its QS inhibition properties and biotechnological applications.
Collapse
Affiliation(s)
- Milagros Liseth Castillo Rivera
- Food Research Center, Dept. of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Univ. of Sao Paulo, Av. Prof. Lineu Prestes 580, B.14, 05508-000, Sao Paulo, Brazil
| | - Neuza Mariko Aymoto Hassimotto
- Food Research Center, Dept. of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Univ. of Sao Paulo, Av. Prof. Lineu Prestes 580, B.14, 05508-000, Sao Paulo, Brazil
| | - Vanessa Bueris
- Laboratory of Resistome and Therapeutic Alternatives, Inst. of Biomedical Sciences , Univ. of Sao Paulo, Av. Prof. Lineu Prestes 2415, 05508-900, Sao Paulo, Brazil.,Laboratory of Genetics, Butantan Institute, Av. Vital Brasil 1500, 05503-900, Sao Paulo, Brazil
| | - Marcelo Palma Sircili
- Laboratory of Genetics, Butantan Institute, Av. Vital Brasil 1500, 05503-900, Sao Paulo, Brazil
| | - Felipe Alves de Almeida
- Dept. of Nutrition, Federal Univ. of Juiz de Fora, Rua Manoel Byrro 241, 35032-620, Governador Valadares, Brazil
| | - Uelinton Manoel Pinto
- Food Research Center, Dept. of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Univ. of Sao Paulo, Av. Prof. Lineu Prestes 580, B.14, 05508-000, Sao Paulo, Brazil
| |
Collapse
|
4
|
Qayyum S, Khan AU. Nanoparticles vs. biofilms: a battle against another paradigm of antibiotic resistance. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00124f] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Microbes form surface-adherent community structures called biofilms and these biofilms play a critical role in infection.
Collapse
Affiliation(s)
- Shariq Qayyum
- Medical Microbiology and Molecular Biology Laboratory
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh
- India
| | - Asad U. Khan
- Medical Microbiology and Molecular Biology Laboratory
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh
- India
| |
Collapse
|
5
|
Couto N, Schooling SR, Dutcher JR, Barber J. Proteome Profiles of Outer Membrane Vesicles and Extracellular Matrix of Pseudomonas aeruginosa Biofilms. J Proteome Res 2015; 14:4207-22. [PMID: 26303878 DOI: 10.1021/acs.jproteome.5b00312] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present work, two different proteomic platforms, gel-based and gel-free, were used to map the matrix and outer membrane vesicle exoproteomes of Pseudomonas aeruginosa PAO1 biofilms. These two proteomic strategies allowed us a confident identification of 207 and 327 proteins from enriched outer membrane vesicles and whole matrix isolated from biofilms. Because of the physicochemical characteristics of these subproteomes, the two strategies showed complementarity, and thus, the most comprehensive analysis of P. aeruginosa exoproteome to date was achieved. Under our conditions, outer membrane vesicles contribute approximately 20% of the whole matrix proteome, demonstrating that membrane vesicles are an important component of the matrix. The proteomic profiles were analyzed in terms of their biological context, namely, a biofilm. Accordingly relevant metabolic processes involved in cellular adaptation to the biofilm lifestyle as well as those related to P. aeruginosa virulence capabilities were a key feature of the analyses. The diversity of the matrix proteome corroborates the idea of high heterogeneity within the biofilm; cells can display different levels of metabolism and can adapt to local microenvironments making this proteomic analysis challenging. In addition to analyzing our own primary data, we extend the analysis to published data by other groups in order to deepen our understanding of the complexity inherent within biofilm populations.
Collapse
Affiliation(s)
- Narciso Couto
- Michael Barber Centre for Mass Spectrometry, Manchester Institute for Biotechnology, University of Manchester , Princess Road, Manchester, M1 7DN, U.K
| | - Sarah R Schooling
- Department of Molecular and Cellular Biology, College of Biological Science, University of Guelph , Guelph, ON N1G 2W1, Canada.,Department of Physics, University of Guelph , Guelph, ON N1G 2W1, Canada
| | - John R Dutcher
- Department of Physics, University of Guelph , Guelph, ON N1G 2W1, Canada
| | - Jill Barber
- Michael Barber Centre for Mass Spectrometry, Manchester Institute for Biotechnology, University of Manchester , Princess Road, Manchester, M1 7DN, U.K.,Manchester Pharmacy School, University of Manchester , Stopford Building, Oxford Road, Manchester, M13 9PT, U.K
| |
Collapse
|