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Dias GR, Freitas-Silva J, de Carvalho MM, Ramos VFDS, Muricy G, Rodrigues JCF, Costa BRFV, de Oliveira BFR, Laport MS. Bioemulsifier from sponge-associated bacteria reduces staphylococcal biofilm. Microb Pathog 2024; 195:106856. [PMID: 39153576 DOI: 10.1016/j.micpath.2024.106856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/17/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Biofilm formation is a major health concern and studies have been pursued to find compounds able to prevent biofilm establishment and remove pre-existing biofilms. While biosurfactants (BS) have been well-known for possessing antibiofilm activities, bioemulsifiers (BE) are still scarcely explored for this purpose. The present study aimed to evaluate the bioemulsifying properties of cell-free supernatants produced by Bacillaceae and Vibrio strains isolated from marine sponges and investigate their antiadhesive and antibiofilm activities against different pathogenic Gram-positive and Gram-negative bacteria. The BE production by the marine strains was confirmed by the emulsion test, drop-collapsing, oil-displacement, cell hydrophobicity and hemolysis assays. Notably, Bacillus cereus 64BHI1101 displayed remarkable emulsifying activity and the ultrastructure analysis of its BE extract (BE64-1) revealed the presence of structures typically observed in macromolecules composed of polysaccharides and proteins. BE64-1 showed notable antiadhesive and antibiofilm activities against Staphylococcus aureus, with a reduction of adherence of up to 100 % and a dispersion of biofilm of 80 %, without affecting its growth. BE64-1 also showed inhibition of Staphylococcus epidermidis and Escherichia coli biofilm formation and adhesion. Thus, this study provides a starting point for exploring the antiadhesive and antibiofilm activities of BE from sponge-associated bacteria, which could serve as a valuable tool for future research to combat S. aureus biofilms.
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Affiliation(s)
- Gabriel Rodrigues Dias
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Cidade Universitária 21941-590, Rio de Janeiro, Brazil
| | - Jéssyca Freitas-Silva
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Cidade Universitária 21941-590, Rio de Janeiro, Brazil
| | - Marianna Machado de Carvalho
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Cidade Universitária 21941-590, Rio de Janeiro, Brazil
| | - Victor Feliciano Dos Santos Ramos
- Núcleo Multidisciplinar de Pesquisas em Biologia, Campus UFRJ-Duque de Caxias Prof. Geraldo Cidade, Universidade Federal do Rio de Janeiro, Rodovia Washington Luiz, km 104, 5. 25240-005, Duque de Caxias, RJ, Brazil
| | - Guilherme Muricy
- Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, s/nº, São Cristóvão. 20940-040 Rio de Janeiro, RJ, Brazil; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rio de Janeiro, 22460-030, RJ, Brazil
| | - Juliany Cola Fernandes Rodrigues
- Núcleo Multidisciplinar de Pesquisas em Biologia, Campus UFRJ-Duque de Caxias Prof. Geraldo Cidade, Universidade Federal do Rio de Janeiro, Rodovia Washington Luiz, km 104, 5. 25240-005, Duque de Caxias, RJ, Brazil
| | - Brunno Renato Farias Verçoza Costa
- Núcleo Multidisciplinar de Pesquisas em Biologia, Campus UFRJ-Duque de Caxias Prof. Geraldo Cidade, Universidade Federal do Rio de Janeiro, Rodovia Washington Luiz, km 104, 5. 25240-005, Duque de Caxias, RJ, Brazil
| | | | - Marinella Silva Laport
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Cidade Universitária 21941-590, Rio de Janeiro, Brazil.
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D'Almeida AP, de Albuquerque TL, Rocha MVP. Recent advances in Emulsan production, purification, and application: Exploring bioemulsifiers unique potentials. Int J Biol Macromol 2024; 278:133672. [PMID: 38971276 DOI: 10.1016/j.ijbiomac.2024.133672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
Bioemulsifiers are compounds produced by microorganisms that reduce the interfacial forces between hydrophobic substances and water. Due to their potential in the pharmaceutical and food industries and their efficiency in oil spill remediation, they have been the subject of study in the scientific community while being safe, biodegradable, and sustainable compared to synthetic options. These biomolecules have high molecular weight and polymeric structures, distinguishing them from traditional biosurfactants. Emulsan, a bioemulsifier exopolysaccharide, is produced by Acinetobacter strains and is highly efficient in forming stable emulsions. Its low toxicity and high potential as an emulsifying agent promote its application in pharmaceutical and food industries as a drug-delivery vehicle and emulsion stabilizer. Due to the high environmental impact of oil spills, bioemulsifiers have great potential for environmental applications, such as bioremediation. This unique feature gives them a distinct mechanism of action in forming emulsions, resulting in minimal environmental impact. A better understanding of these aspects can improve the use of bioemulsifiers and environmental remediation in various industries. This review will discuss the production and characterization of Emulsan, focusing on recent advancements in cultivation conditions, purification techniques, compound identification, and ecotoxicity.
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Timira V, Chen X, Zhou P, Wu J, Wang T. Potential use of yeast protein in terms of biorefinery, functionality, and sustainability in food industry. Compr Rev Food Sci Food Saf 2024; 23:e13326. [PMID: 38572572 DOI: 10.1111/1541-4337.13326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 02/20/2024] [Accepted: 03/03/2024] [Indexed: 04/05/2024]
Abstract
A growing demand for sustainable, alternative protein sources that are nutrient-dense, such as microorganisms, and insects, has gradually evolved. When paired with effective processing techniques, yeast cells contain substantial substances that could supply the population's needs for food, medicine, and fuel. This review article explores the potential of yeast proteins as a sustainable and viable alternative to animal and plant-based protein sources. It highlights the various yeast protein extraction methods including both mechanical and non-mechanical methods. The application of nanoparticles is one example of the fast-evolving technology used to damage microbial cells. SiO2 or Al2O3 nanoparticles break yeast cell walls and disrupt membranes, releasing intracellular bioactive compounds. Succinylation of yeast protein during extraction can increase yeast protein extraction rate, lower RNA concentration, raise yeast protein solubility, increase amino acid content, and improve yeast protein emulsification and foaming capabilities. Combining physical and enzymatic extraction methods generates the most representative pool of mannose proteins from yeast cell walls. Ethanol or isoelectric precipitation purifies mannose proteins. Mannoproteins can be used as foamy replacement for animal-derived components like egg whites due to their emulsification, stability, and foaming capabilities. Yeast bioactive peptide was separated by ultrafiltration after enzymatic hydrolysis of yeast protein and has shown hypoglycemic, hypotensive, and oxidative action in vitro studies. Additionally, the review delves into the physicochemical properties and stability of yeast-derived peptides as well as their applications in the food industry. The article infers that yeast proteins are among the promising sources of sustainable protein, with a wide range of potential applications in the food industry.
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Affiliation(s)
- Vaileth Timira
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xing Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Peng Zhou
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Junjun Wu
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Tao Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
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Mohseni Sani N, Talaee M, Akbari A, Ashoori F, Zamani J, Kermani AA, Shahbani Zahiri H, Presley J, Vali H, Akbari Noghabi K. Unveiling the structure-emulsifying function relationship of truncated recombinant forms of the SA01-OmpA protein opens up a new vista in bioemulsifiers. Microbiol Spectr 2024; 12:e0346523. [PMID: 38206002 PMCID: PMC10846152 DOI: 10.1128/spectrum.03465-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/03/2023] [Indexed: 01/12/2024] Open
Abstract
The emulsifying ability of SA01-OmpA (outer membrane protein A from Acinetobacter sp. SA01) was found to be constrained by challenges like low production efficiency and high costs associated with protein recovery from E. coli inclusion bodies, as described in our previous study. The present study sought to benefit from the advantages of the targeted truncating of SA01-OmpA protein, taking into account the reduced propensity of protein expression as inclusion bodies and cytotoxicity. Here, the structure and activity relationship of two truncated recombinant forms of SA01-OmpA protein was unraveled through a hybrid approach based on experimental data and computational methodologies, representing an innovative bioemulsifier with advantageous emulsifying activity. The recombinant truncated SA01-OmpA variants were cloned and heterologously expressed in E. coli host cells and subsequently purified. The results showed increased emulsifying activity of N-terminally truncated SA01-OmpA (NT-OmpA) compared to full-length SA01-OmpA. Molecular dynamics (MD) simulations analysis demonstrated a direct correlation between the C-terminally truncated SA01-OmpA (CT-OmpA) and its expression as inclusion bodies. Analysis of the structure-activity relationship of truncated variants of SA01-OmpA revealed that, compared to the full-length protein, deletion of the β-barrel portion from the N-terminal of SA01-OmpA increased the emulsifying activity of NT-OmpA while lowering its expression as inclusion bodies. Contrary to the full-length protein, the N-terminally truncated SA01-OmpA was not as cytotoxic, according to the MTT assay, FCM analysis, and AO/EB staining. The findings of this extensive study advance our knowledge of SA01-OmpA at the molecular level as well as the design and development of efficient bioemulsifiers.IMPORTANCEPrevious research (Shahryari et al. 2021, mSystems 6: e01175-20) introduced and characterized the SA01-OmpA protein as a multifaceted protein with a variety of functions, including maintaining cellular homeostasis under oxidative stress conditions, biofilm formation, outer membrane vesicles (OMV) biogenesis, and beneficial emulsifying capacity. By truncating the SA01-OmpA protein, the current study presents a unique method for developing protein-type bioemulsifiers. The findings indicate that the N-terminally truncated SA01-OmpA (NT-OmpA) has the potential to fully replace full-length SA01-OmpA as a novel bioemulsifier with significant emulsifying activity. This study opens up a new frontier in bioemulsifiers, shedding light on a possible relationship between the structure and activity of SA01-OmpA truncated forms.
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Affiliation(s)
- Naeema Mohseni Sani
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Mahbubeh Talaee
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Ali Akbari
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Faranak Ashoori
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Javad Zamani
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Ali A. Kermani
- Department of Structural Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Hossein Shahbani Zahiri
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - John Presley
- Department of Anatomy & Cell Biology, McGill University, Montreal, Québec, Canada
| | - Hojatollah Vali
- Department of Anatomy & Cell Biology, McGill University, Montreal, Québec, Canada
| | - Kambiz Akbari Noghabi
- Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
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Elsaygh YA, Gouda MK, Elbahloul Y, Hakim MA, El Halfawy NM. Production and structural characterization of eco-friendly bioemulsifier SC04 from Saccharomyces cerevisiae strain MYN04 with potential applications. Microb Cell Fact 2023; 22:176. [PMID: 37679768 PMCID: PMC10485968 DOI: 10.1186/s12934-023-02186-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/21/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Bioemulsifiers are natural or microbial-based products with the ability to emulsify hydrophobic compounds in water. These compounds are biodegradable, eco-friendly, and find applications in various industries. RESULTS Thirteen yeasts were isolated from different sources in Alexandria, Egypt, and evaluated for their potential to produce intracellular bioemulsifiers. One yeast, isolated from a local market in Egypt, showed the highest emulsification index (EI24) value. Through 26S rRNA sequencing, this yeast was identified as Saccharomyces cerevisiae strain MYN04. The growth kinetics of the isolate were studied, and after 36 h of incubation, the highest yield of cell dry weight (CDW) was obtained at 3.17 g/L, with an EI24 of 55.6%. Experimental designs were used to investigate the effects of culture parameters on maximizing bioemulsifier SC04 production and CDW. The study achieved a maximum EI24 of 79.0 ± 2.0%. Furthermore, the crude bioemulsifier was precipitated with 50% ethanol and purified using Sephadex G-75 gel filtration chromatography. Bioemulsifier SC04 was found to consist of 27.1% carbohydrates and 72.9% proteins. Structural determination of purified bioemulsifier SC04 was carried out using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), high-performance liquid chromatography (HPLC), and nuclear magnetic resonance spectroscopy (NMR). FTIR spectroscopy revealed characteristic bands associated with carboxyl and hydroxyl groups of carbohydrates, as well as amine groups of proteins. HPLC analysis of monosaccharide composition detected the presence of mannose, galactose, and glucose. Physicochemical characterization of the fraction after gel filtration indicated that bioemulsifier SC04 is a high molecular weight protein-oligosaccharide complex. This bioemulsifier demonstrated stability at different pH values, temperatures, and salinities. At a concentration of 0.5 mg/mL, it exhibited 51.8% scavenging of DPPH radicals. Furthermore, in vitro cytotoxicity evaluation using the MTT assay revealed a noncytotoxic effect of SC04 against normal epithelial kidney cell lines. CONCLUSIONS This study presents a new eco-friendly bioemulsifier, named SC04, which exhibits significant emulsifying ability, antioxidant and anticancer properties, and stabilizing properties. These findings suggest that SC04 is a promising candidate for applications in the food, pharmaceutical, and industrial sectors.
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Affiliation(s)
- Yasmina A Elsaygh
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Moharam Bek, Alexandria, 21511, Egypt
| | - Mona K Gouda
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Moharam Bek, Alexandria, 21511, Egypt
| | - Yasser Elbahloul
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Moharam Bek, Alexandria, 21511, Egypt
| | | | - Nancy M El Halfawy
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Moharam Bek, Alexandria, 21511, Egypt.
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Rubio-Ribeaux D, da Costa RAM, Montero-Rodríguez D, do Amaral Marques NSA, Puerta-Díaz M, de Souza Mendonça R, Franco PM, Dos Santos JC, da Silva SS. Sustainable production of bioemulsifiers, a critical overview from microorganisms to promising applications. World J Microbiol Biotechnol 2023; 39:195. [PMID: 37171665 DOI: 10.1007/s11274-023-03611-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/06/2023] [Indexed: 05/13/2023]
Abstract
Microbial bioemulsifiers are molecules of amphiphilic nature and high molecular weight that are efficient in emulsifying two immiscible phases such as water and oil. These molecules are less effective in reducing surface tension and are synthesized by bacteria, yeast and filamentous fungi. Unlike synthetic emulsifiers, microbial bioemulsifiers have unique advantages such as biocompatibility, non-toxicity, biodegradability, efficiency at low concentrations and high selectivity under different conditions of pH, temperature and salinity. The adoption of microbial bioemulsifiers as alternatives to their synthetic counterparts has been growing in ongoing research. This article analyzes the production of microbial-based emulsifiers, the raw materials and fermentation processes used, as well as the scale-up and commercial applications of some of these biomolecules. The current trend of incorporating natural compounds into industrial formulations indicates that the search for new bioemulsifiers will continue to increase, with emphasis on performance improvement and economically viable processes.
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Affiliation(s)
- Daylin Rubio-Ribeaux
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12.602-810, Brazil.
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil.
| | - Rogger Alessandro Mata da Costa
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12.602-810, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Dayana Montero-Rodríguez
- Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Pernambuco, 50050-590, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Nathália Sá Alencar do Amaral Marques
- Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Pernambuco, 50050-590, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Mirelys Puerta-Díaz
- Pernambuco Institute of Agronomy, Recife, Pernambuco, 50761-000, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Rafael de Souza Mendonça
- Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Pernambuco, 50050-590, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Paulo Marcelino Franco
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12.602-810, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Júlio César Dos Santos
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12.602-810, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
| | - Silvio Silvério da Silva
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12.602-810, Brazil
- Faculty of Philosophy and Sciences, Campus Marília, São Paulo State University, São Paulo, 17.525-900, Brazil
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Devale A, Sawant R, Pardesi K, Perveen K, Khanam MNI, Shouche Y, Mujumdar S. Production and characterization of bioemulsifier by Parapedobacter indicus. Front Microbiol 2023; 14:1111135. [PMID: 36876100 PMCID: PMC9978354 DOI: 10.3389/fmicb.2023.1111135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/09/2023] [Indexed: 02/18/2023] Open
Abstract
The current study evaluated Parapedobacter indicus MCC 2546 for its potential to produce a bioemulsifier (BE). Screening methods performed for BE production by P. indicus MCC 2546 showed good lipase activity, positive drop collapse test, and oil-spreading activity. Furthermore, it showed maximum emulsification activity (225 EU/ml) and emulsification index (E24 50%) at 37°C in Luria Bertani broth at 72 h with olive oil as a substrate. The optimal pH and NaCl concentration for maximum emulsification activity were 7 and 1%, respectively. P. indicus MCC 2546 lowered the surface tension of the culture medium from 59.65 to 50.42 ± 0.78 mN/m. BE produced was composed of 70% protein and 30% carbohydrate, which showed the protein-polysaccharide nature of the BE. Furthermore, Fourier transform infrared spectroscopy analysis confirmed the same. P. indicus MCC 2546 showed a catecholate type of siderophore production. This is the first report on BE and siderophore production by the genus Parapedobacter.
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Affiliation(s)
- Anushka Devale
- Department of Microbiology, P.E.S. Modern College of Arts, Science and Commerce (Autonomous), Pune, India
| | - Rupali Sawant
- Department of Microbiology, P.E.S. Modern College of Arts, Science and Commerce (Autonomous), Pune, India
| | - Karishma Pardesi
- Department of Microbiology, Savitribai Phule Pune University, Pune, India
| | - Kahkashan Perveen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mehrun NIsha Khanam
- School of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yogesh Shouche
- School of Arts and Sciences, Azim Premji University, Bengaluru, India
| | - Shilpa Mujumdar
- Department of Microbiology, P.E.S. Modern College of Arts, Science and Commerce (Autonomous), Pune, India
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D’Angelo C, Casillo A, Melchiorre C, Lauro C, Corsaro MM, Carpentieri A, Tutino ML, Parrilli E. CATASAN Is a New Anti-Biofilm Agent Produced by the Marine Antarctic Bacterium Psychrobacter sp. TAE2020. Mar Drugs 2022; 20:md20120747. [PMID: 36547894 PMCID: PMC9785100 DOI: 10.3390/md20120747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
The development of new approaches to prevent microbial surface adhesion and biofilm formation is an emerging need following the growing understanding of the impact of biofilm-related infections on human health. Staphylococcus epidermidis, with its ability to form biofilm and colonize biomaterials, represents the most frequent causative agent involved in infections of medical devices. In the research of new anti-biofilm agents against S. epidermidis biofilm, Antarctic marine bacteria represent an untapped reservoir of biodiversity. In the present study, the attention was focused on Psychrobacter sp. TAE2020, an Antarctic marine bacterium that produces molecules able to impair the initial attachment of S. epidermidis strains to the polystyrene surface. The setup of suitable purification protocols allowed the identification by NMR spectroscopy and LC-MS/MS analysis of a protein-polysaccharide complex named CATASAN. This complex proved to be a very effective anti-biofilm agent. Indeed, it not only interferes with cell surface attachment, but also prevents biofilm formation and affects the mature biofilm matrix structure of S. epidermidis. Moreover, CATASAN is endowed with a good emulsification activity in a wide range of pH and temperature. Therefore, its use can be easily extended to different biotechnological applications.
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Affiliation(s)
- Caterina D’Angelo
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Angela Casillo
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Chiara Melchiorre
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Concetta Lauro
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
- Istituto Nazionale Biostrutture e Biosistemi—I.N.B.B., Viale Medaglie d’Oro, 305-00136 Rome, Italy
| | - Maria Michela Corsaro
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Andrea Carpentieri
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Maria Luisa Tutino
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Ermenegilda Parrilli
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
- Correspondence: ; Tel.: +39-081674003; Fax: +39-081674113
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