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Jin Y, Chen J, Zhang Q, Farooq U, Lu T, Wang B, Qi Z, Chen W. Biosurfactant-affected mobility of oxytetracycline and its variations with surface chemical heterogeneity in saturated porous media. WATER RESEARCH 2023; 244:120509. [PMID: 37634454 DOI: 10.1016/j.watres.2023.120509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 08/29/2023]
Abstract
Herein, the influences of rhamnolipid (a typical biosurfactant) on oxytetracycline (OTC) transport in the porous media and their variations with the surface heterogeneities of the media (uncoated sand, goethite (Goe)-, and humic acid (HA)-coated sands) were explored. Compared to uncoated sand, goethite and HA coatings suppressed OTC mobility by increasing deposition sites. Interestingly, rhamnolipid-affected OTC transport strongly depended on the chemical heterogeneities of aquifers and biosurfactant concentrations. Concretely, adding rhamnolipid (1-3 mg/L) inhibited OTC mobility through sand columns because of the bridging effect of biosurfactant between sand and OTC. Unexpectedly, rhamnolipid of 10 mg/L did not further improve the inhibition of OTC transport owing to the fact that the deposition capacity of rhamnolipid reached its maximum. OTC mobility in Goe-coated sand columns was inhibited by 1 mg/L rhamnolipid. However, the inhibitory effect decreased with the increasing rhamnolipid concentration (3 mg/L) and exhibited a promoted effect at 10 mg/L rhamnolipid. This surprising observation was that the increased rhamnolipid molecules gradually occupied the favorable deposition sites (i.e., the positively charged sites). In comparison, rhamnolipid facilitated OTC transport in the HA-coated sand column. The promotion effects positively correlated with rhamnolipid concentrations because of the high electrostatic repulsion and deposition site competition induced by the deposited rhamnolipid. Another interesting phenomenon was that rhamnolipid's enhanced or inhibitory effects on OTC transport declined with the increasing solution pH because of the decreased rhamnolipid deposition on porous media surfaces. These findings benefit our understanding of the environmental behaviors of antibiotics in complex soil-water systems containing biosurfactants.
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Affiliation(s)
- Yinhan Jin
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jiuyan Chen
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China; Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process, Fujian Provincial Key Laboratory for Plant Eco-physiology, College of Geographical Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Qiang Zhang
- Ecology institute of the Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Usman Farooq
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Taotao Lu
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Bin Wang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhichong Qi
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Weifeng Chen
- Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process, Fujian Provincial Key Laboratory for Plant Eco-physiology, College of Geographical Science, Fujian Normal University, Fuzhou, Fujian 350007, China.
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Sharaf M, Sewid AH, Hamouda HI, Elharrif MG, El-Demerdash AS, Alharthi A, Hashim N, Hamad AA, Selim S, Alkhalifah DHM, Hozzein WN, Abdalla M, Saber T. Rhamnolipid-Coated Iron Oxide Nanoparticles as a Novel Multitarget Candidate against Major Foodborne E. coli Serotypes and Methicillin-Resistant S. aureus. Microbiol Spectr 2022; 10:e0025022. [PMID: 35852338 PMCID: PMC9430161 DOI: 10.1128/spectrum.00250-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/21/2022] [Indexed: 01/28/2023] Open
Abstract
Surface-growing antibiotic-resistant pathogenic bacteria such as Escherichia coli and Staphylococcus aureus are emerging as a global health challenge due to dilemmas in clinical treatment. Furthermore, their pathogenesis, including increasingly serious antimicrobial resistance and biofilm formation, makes them challenging to treat by conventional therapy. Therefore, the development of novel antivirulence strategies will undoubtedly provide a path forward in combatting these resistant bacterial infections. In this regard, we developed novel biosurfactant-coated nanoparticles to combine the antiadhesive/antibiofilm properties of rhamnolipid (RHL)-coated Fe3O4 nanoparticles (NPs) with each of the p-coumaric acid (p-CoA) and gallic acid (GA) antimicrobial drugs by using the most available polymer common coatings (PVA) to expand the range of effective antibacterial drugs, as well as a mechanism for their synergistic effect via a simple method of preparation. Mechanistically, the average size of bare Fe3O4 NPs was ~15 nm, while RHL-coated Fe3O4@PVA@p-CoA/GA was about ~254 nm, with a drop in zeta potential from -18.7 mV to -34.3 mV, which helped increase stability. Our data show that RHL-Fe3O4@PVA@p-CoA/GA biosurfactant NPs can remarkably interfere with bacterial growth and significantly inhibited biofilm formation to more than 50% via downregulating IcaABCD and CsgBAC operons, which are responsible for slime layer formation and curli fimbriae production in S. aureus and E. coli, respectively. The novelty regarding the activity of RHL-Fe3O4@PVA@p-CoA/GA biosurfactant NPs reveals their potential effect as an alternative multitarget antivirulence candidate to minimize infection severity by inhibiting biofilm development. Therefore, they could be used in antibacterial coatings and wound dressings in the future. IMPORTANCE Antimicrobial resistance poses a great threat and challenge to humanity. Therefore, the search for alternative ways to target and eliminate microbes from plant, animal, and marine microorganisms is one of the world's concerns today. Furthermore, the extraordinary capacity of S. aureus and E. coli to resist standard antibacterial drugs is the dilemma of all currently used remedies. Methicillin-resistant S. aureus (MRSA) and vancomycin-resistant S. aureus (VRSA) have become widespread, leading to no remedies being able to treat these threatening pathogens. The most widely recognized serotypes that cause severe foodborne illness are E. coli O157:H7, O26:H11, and O78:H10, and they display increasing antimicrobial resistance rates. Therefore, there is an urgent need for an effective therapy that has dual action to inhibit biofilm formation and decrease bacterial growth. In this study, the synthesized RHL-Fe3O4@PVA@p-CoA/GA biosurfactant NPs have interesting properties, making them excellent candidates for targeted drug delivery by inhibiting bacterial growth and downregulating biofilm-associated IcaABCD and CsgBAC gene loci.
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Affiliation(s)
- Mohamed Sharaf
- Department of Biochemistry, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, Egypt
- Department of Biochemistry and Molecular Biology, College of Marine Life Sciences, Ocean University of China, Qingdao, People’s Republic of China
| | - Alaa H. Sewid
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- Department of Biomedical and Diagnostic Sciences, University of Tennessee, Knoxville, Tennessee, USA
| | - H. I. Hamouda
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
- Processes Design and Development Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
| | - Mohamed G. Elharrif
- Department of Basic Medical Sciences, Shaqra University, Shaqraa, Kingdom of Saudi Arabia
| | | | - Afaf Alharthi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Nada Hashim
- General Practitioner, Faculty of Medicine, University of Gezira, Wad Medani, Sudan
| | - Anas Abdullah Hamad
- Department of Medical Laboratory Techniques, Al Maarif University College, Al Anbar, Ramadi, Iraq
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Dalal Hussien M. Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Wael N. Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Mohnad Abdalla
- Department of Biotechnology, Faculty of Science and Technology, Shendi University, Shendi, Nher Anile, Sudan
| | - Taisir Saber
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Pugazhendi A, Jamal MT, Al-Mur BA, Jeyakumar RB, Kumar G. Macroalgae (Ulva reticulata) derived biohydrogen recovery through mild surfactant induced energy and cost efficient dispersion pretreatment technology. CHEMOSPHERE 2022; 288:132463. [PMID: 34619256 DOI: 10.1016/j.chemosphere.2021.132463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/25/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
Currently identification of alternate fuel is the key area of research under progress to overcome the depletion of fossil fuels, meet the domestic and industrial requirements. Generation of hydrogen, which is a clean fuel gas can solve various environmental related problems. Extensive research is being carried out to increase production of hydrogen through different substrates. This study aims to increase the production of hydrogen from Ulva reticulata (a macroalgal biomass). Initially, the biomass is pretreated mechanically with disperser and a biosurfactant, namely rhamnolipid in order to increase the solubilization of the biomass. The rate of COD liquefaction increased from 14% to 25% with the addition of biosurfactant to the macroalgal biomass, which is further treated mechanically using a disperser. The disperser rotor speed of 12,000 rpm and the specific energy input of 1175 kJ/kg TS (Total Solids) with the disintegration time of 30 min and biosurfactant dosage of 0.075 g/g TS were considered as the optimum parameters for the effective liquefaction of the macroalgal biomass. Approximately 3500 mg/L of the biopolymers were released after the combinative pretreatment (using disperser and biosurfactant). About 80 mL biohydrogen/g COD (Chemical Oxygen Demand) was generated when the biomass was pretreated with both the disperser and biosurfactant while the biomass pretreated with the disperser alone generated just 30 mL biohydrogen/g COD and the untreated biomass generated 5 mL biohydrogen/g COD. Thus, it can be concluded that Ulva reticulata can be utilized effectively to generate biohydrogen.
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Affiliation(s)
- Arulazhagan Pugazhendi
- Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Mamdoh T Jamal
- Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Bandar A Al-Mur
- Department of Environmental Science, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rajesh Banu Jeyakumar
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Life Sciences, Central University of Tamil Nadu, Neelakudy, Thiruvarur-610005, Tamil Nadu, India
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus 4036, Stavanger, Norway
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De Giani A, Zampolli J, Di Gennaro P. Recent Trends on Biosurfactants With Antimicrobial Activity Produced by Bacteria Associated With Human Health: Different Perspectives on Their Properties, Challenges, and Potential Applications. Front Microbiol 2021; 12:655150. [PMID: 33967992 PMCID: PMC8104271 DOI: 10.3389/fmicb.2021.655150] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022] Open
Abstract
The attention towards the bacteria associated with human health is growing more and more, above all regarding the bacteria that inhabit the niches offered by the human body, i.e., the gastrointestinal tract, skin, vaginal environment, and lungs. Among the secondary metabolites released by microorganisms associated with human health, little consideration is given to the biosurfactants, molecules with both hydrophobic and hydrophilic nature. Their role in the complex human environment is not only the mere biosurfactant function, but they could also control the microbiota through the quorum sensing system and the antimicrobial activity. These functions protect them and, accordingly, the human body principally from microbial and fungal pathogens. Consequently, nowadays, biosurfactants are emerging as promising bioactive molecules due to their very different structures, biological functions, low toxicity, higher biodegradability, and versatility. Therefore, this review provides a comprehensive perspective of biosurfactants with antimicrobial activity produced by bacteria associated with the human body and related to everything human beings are in contact with, e.g., food, beverages, and food-waste dumping sites. For the first time, the role of an "-omic" approach is highlighted to predict gene products for biosurfactant production, and an overview of the available gene sequences is reported. Besides, antimicrobial biosurfactants' features, challenges, and potential applications in the biomedical, food, and nutraceutical industries are discussed.
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Affiliation(s)
| | | | - Patrizia Di Gennaro
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
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Khalid HF, Tehseen B, Sarwar Y, Hussain SZ, Khan WS, Raza ZA, Bajwa SZ, Kanaras AG, Hussain I, Rehman A. Biosurfactant coated silver and iron oxide nanoparticles with enhanced anti-biofilm and anti-adhesive properties. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:441-448. [PMID: 30384254 DOI: 10.1016/j.jhazmat.2018.10.049] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/11/2018] [Accepted: 10/16/2018] [Indexed: 06/08/2023]
Abstract
Pseudomonas aeruginosa and Staphylococcus aureus are among the hazardous biofilm forming bacteria ubiquitous in industrial/clinical wastes. Serious efforts are required to develop effective strategies to control surface-growing antibiotic resistant pathogenic bacterial communities which they are emerging as a global health issue. Blocking hazardous biofilms would be a useful aspect of biosurfactant coated nanoparticles (NPs). In this regard, we report a facile method for the synthesis of rhamnolipid (RL) coated silver (Ag) and iron oxide (Fe3O4) NPs and propose the mechanism of their synergistic antibacterial and anti-adhesive properties against biofilms formed by P. aeruginosa and S. aureus. These NPs demonstrated excellent anti-biofilm activity not only during the biofilms formation but also on the pre-formed biofilms. Mechanistically, RL coated silver (35 nm) and Fe3O4 NPs (48 nm) generate reactive oxygen species, which contribute to the antimicrobial activity. The presence of RLs shell on the nanoparticles significantly reduces the cell adhesion by modifying the surface hydrophobicity and hence enhancing the anti-biofilm property of NPs against both mentioned strains. These findings suggest that RL coated Ag and Fe3O4 NPs may be used as potent alternate to reduce the infection severity by inhibiting the biofilm formation and, therefore, they possess potential biomedical applications for antibacterial coatings and wound dressings.
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Affiliation(s)
- Hafiza Faiza Khalid
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Bushra Tehseen
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Yasra Sarwar
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Syed Zajif Hussain
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, 54792, Pakistan
| | - Waheed S Khan
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Zulfiqar Ali Raza
- Department of Applied Sciences, National Textile University, Faisalabad, 37610, Pakistan
| | - Sadia Zafar Bajwa
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Antonios G Kanaras
- Physics and Astronomy, Institute of Life Sciences, University of Southampton, Southampton, SO171BJ, United Kingdom
| | - Irshad Hussain
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, 54792, Pakistan
| | - Asma Rehman
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan.
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Patel S, Homaei A, Patil S, Daverey A. Microbial biosurfactants for oil spill remediation: pitfalls and potentials. Appl Microbiol Biotechnol 2018; 103:27-37. [DOI: 10.1007/s00253-018-9434-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 12/11/2022]
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Bahia FM, de Almeida GC, de Andrade LP, Campos CG, Queiroz LR, da Silva RLV, Abdelnur PV, Corrêa JR, Bettiga M, Parachin NS. Rhamnolipids production from sucrose by engineered Saccharomyces cerevisiae. Sci Rep 2018; 8:2905. [PMID: 29440668 PMCID: PMC5811566 DOI: 10.1038/s41598-018-21230-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 01/31/2018] [Indexed: 11/21/2022] Open
Abstract
Biosurfactants are biological tensioactive agents that can be used in the cosmetic and food industries. Rhamnolipids are glycolipid biosurfactants naturally produced by Pseudomonas aeruginosa and are composed of one or two rhamnose molecules linked to beta-hydroxy fatty acid chains. These compounds are green alternatives to petrochemical surfactants, but their large-scale production is still in its infancy, hindered due to pathogenicity of natural producer, high substrate and purification costs and low yields and productivities. This study, for the first time, aimed at producing mono-rhamnolipids from sucrose by recombinant GRAS Saccharomyces cerevisiae strains. Six enzymes from P. aeruginosa involved in mono-rhamnolipid biosynthesis were functionally expressed in the yeast. Furthermore, its SUC2 invertase gene was disrupted and a sucrose phosphorylase gene from Pelomonas saccharophila was also expressed to reduce the pathway's overall energy requirement. Two strains were constructed aiming to produce mono-rhamnolipids and the pathway's intermediate dTDP-L-rhamnose. Production of both molecules was analyzed by confocal microscopy and mass spectrometry, respectively. These strains displayed, for the first time as a proof of concept, the potential of production of these molecules by a GRAS eukaryotic microorganism from an inexpensive substrate. These constructs show the potential to further improve rhamnolipids production in a yeast-based industrial bioprocess.
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Affiliation(s)
- Frederico Mendonça Bahia
- Department of Molecular Biology, Biological Sciences Institute, University of Brasília (UnB), Campus Darcy Ribeiro, Block K. Postal code: 70.790-900, Brasilia, Federal District, Brazil
| | - Gabriela Carneiro de Almeida
- Catholic University of Brasília (UCB), Advanced Campus Asa Norte, SGAN 916 Block B Avenue W5, Postal code: 70.790-160, Brasilia, Federal District, Brazil
| | - Lorena Pereira de Andrade
- Department of Molecular Biology, Biological Sciences Institute, University of Brasília (UnB), Campus Darcy Ribeiro, Block K. Postal code: 70.790-900, Brasilia, Federal District, Brazil
| | - Christiane Gonçalves Campos
- Brazilian Agricultural Research Corporation, Embrapa Agroenergy, W3 Norte, PqEB, Postal code: 70770-901, Brasília, Federal District, Brazil
- Institute of Chemistry, Federal University of Goiás, Campus Samambaia, Postal code: 74690-900, Goiânia, Goiás, Brazil
| | - Lúcio Rezende Queiroz
- Department of Molecular Biology, Biological Sciences Institute, University of Brasília (UnB), Campus Darcy Ribeiro, Block K. Postal code: 70.790-900, Brasilia, Federal District, Brazil
| | - Rayane Luzia Vieira da Silva
- Catholic University of Brasília (UCB), Advanced Campus Asa Norte, SGAN 916 Block B Avenue W5, Postal code: 70.790-160, Brasilia, Federal District, Brazil
| | - Patrícia Verardi Abdelnur
- Brazilian Agricultural Research Corporation, Embrapa Agroenergy, W3 Norte, PqEB, Postal code: 70770-901, Brasília, Federal District, Brazil
- Institute of Chemistry, Federal University of Goiás, Campus Samambaia, Postal code: 74690-900, Goiânia, Goiás, Brazil
| | - José Raimundo Corrêa
- Department of Molecular Biology, Biological Sciences Institute, University of Brasília (UnB), Campus Darcy Ribeiro, Block K. Postal code: 70.790-900, Brasilia, Federal District, Brazil
| | - Maurizio Bettiga
- Department of Biology and Biological Engineering, Division of Industrial Biotechnology, Chalmers University of Technology, SE-41296, Gothenburg, Sweden
- EviKrets Biobased Processes Consultants, Gibraltarsgatan 40, 41280, Gothenburg, Sweden
| | - Nádia Skorupa Parachin
- Department of Molecular Biology, Biological Sciences Institute, University of Brasília (UnB), Campus Darcy Ribeiro, Block K. Postal code: 70.790-900, Brasilia, Federal District, Brazil.
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Nasir MN, Lins L, Crowet JM, Ongena M, Dorey S, Dhondt-Cordelier S, Clément C, Bouquillon S, Haudrechy A, Sarazin C, Fauconnier ML, Nott K, Deleu M. Differential Interaction of Synthetic Glycolipids with Biomimetic Plasma Membrane Lipids Correlates with the Plant Biological Response. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9979-9987. [PMID: 28749675 DOI: 10.1021/acs.langmuir.7b01264] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Natural and synthetic amphiphilic molecules including lipopeptides, lipopolysaccharides, and glycolipids are able to induce defense mechanisms in plants. In the present work, the perception of two synthetic C14 rhamnolipids, namely, Alk-RL and Ac-RL, differing only at the level of the lipid tail terminal group have been investigated using biological and biophysical approaches. We showed that Alk-RL induces a stronger early signaling response in tobacco cell suspensions than does Ac-RL. The interactions of both synthetic RLs with simplified biomimetic membranes were further analyzed using experimental and in silico approaches. Our results indicate that the interactions of Alk-RL and Ac-RL with lipids were different in terms of insertion and molecular responses and were dependent on the lipid composition of model membranes. A more favorable insertion of Alk-RL than Ac-RL into lipid membranes is observed. Alk-RL forms more stable molecular assemblies than Ac-RL with phospholipids and sterols. At the molecular level, the presence of sterols tends to increase the RLs' interaction with lipid bilayers, with a fluidizing effect on the alkyl chains. Taken together, our findings suggest that the perception of these synthetic RLs at the membrane level could be related to a lipid-driven process depending on the organization of the membrane and the orientation of the RLs within the membrane and is correlated with the induction of early signaling responses in tobacco cells.
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Affiliation(s)
| | | | | | | | - Stephan Dorey
- Reims Champagne-Ardenne University , URVVC-SE-EA 2069, Stress, Defense and Plant Reproduction Laboratory, Structure Fédérative de Recherche Condorcet Fédération de Recherche, Centre National de la Recherche Scientifique, 3417BP 1039, F-51687 Reims Cedex 2, France
| | - Sandrine Dhondt-Cordelier
- Reims Champagne-Ardenne University , URVVC-SE-EA 2069, Stress, Defense and Plant Reproduction Laboratory, Structure Fédérative de Recherche Condorcet Fédération de Recherche, Centre National de la Recherche Scientifique, 3417BP 1039, F-51687 Reims Cedex 2, France
| | - Christophe Clément
- Reims Champagne-Ardenne University , URVVC-SE-EA 2069, Stress, Defense and Plant Reproduction Laboratory, Structure Fédérative de Recherche Condorcet Fédération de Recherche, Centre National de la Recherche Scientifique, 3417BP 1039, F-51687 Reims Cedex 2, France
| | - Sandrine Bouquillon
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Structure Fédérative de Recherche Condorcet, UFR Sciences, BP 1039, F-51687 Reims Cedex 2, France
| | - Arnaud Haudrechy
- Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Structure Fédérative de Recherche Condorcet, UFR Sciences, BP 1039, F-51687 Reims Cedex 2, France
| | - Catherine Sarazin
- Unité de Génie Enzymatique et Cellulaire, FRE CNRS 3580, Structure Fédérative de Recherche Condorcet, Université de Picardie Jules Verne , 33 Rue Saint-Leu, F-80039 Amiens, France
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El-Housseiny GS, Aboulwafa MM, Aboshanab KA, Hassouna NAH. Optimization of Rhamnolipid Production by P. aeruginosa Isolate P6. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1845-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Optimization of rhamnolipid production by biodegrading bacterial isolates using Plackett–Burman design. Int J Biol Macromol 2016; 82:573-9. [DOI: 10.1016/j.ijbiomac.2015.09.057] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 09/02/2015] [Accepted: 09/27/2015] [Indexed: 11/22/2022]
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Boyle KE, Monaco H, van Ditmarsch D, Deforet M, Xavier JB. Integration of Metabolic and Quorum Sensing Signals Governing the Decision to Cooperate in a Bacterial Social Trait. PLoS Comput Biol 2015; 11:e1004279. [PMID: 26102206 PMCID: PMC4477906 DOI: 10.1371/journal.pcbi.1004279] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 04/11/2015] [Indexed: 01/18/2023] Open
Abstract
Many unicellular organisms live in multicellular communities that rely on cooperation between cells. However, cooperative traits are vulnerable to exploitation by non-cooperators (cheaters). We expand our understanding of the molecular mechanisms that allow multicellular systems to remain robust in the face of cheating by dissecting the dynamic regulation of cooperative rhamnolipids required for swarming in Pseudomonas aeruginosa. We combine mathematical modeling and experiments to quantitatively characterize the integration of metabolic and population density signals (quorum sensing) governing expression of the rhamnolipid synthesis operon rhlAB. The combined computational/experimental analysis reveals that when nutrients are abundant, rhlAB promoter activity increases gradually in a density dependent way. When growth slows down due to nutrient limitation, rhlAB promoter activity can stop abruptly, decrease gradually or even increase depending on whether the growth-limiting nutrient is the carbon source, nitrogen source or iron. Starvation by specific nutrients drives growth on intracellular nutrient pools as well as the qualitative rhlAB promoter response, which itself is modulated by quorum sensing. Our quantitative analysis suggests a supply-driven activation that integrates metabolic prudence with quorum sensing in a non-digital manner and allows P. aeruginosa cells to invest in cooperation only when the population size is large enough (quorum sensing) and individual cells have enough metabolic resources to do so (metabolic prudence). Thus, the quantitative description of rhlAB regulatory dynamics brings a greater understating to the regulation required to make swarming cooperation stable. Although bacteria are not multicellular organisms, they commonly live in large communities and engage in many cooperative behaviors. Cooperation can allow bacteria to access additional nutrients, but it requires the secretion of products that will be shared by the community. How bacteria make the molecular decision to cooperate within a community is still not completely understood. The bacterium Pseudomonas aeruginosa regulates the secretion of one of these shared products, rhamnolipids, using information about population density and nutrient availability in its environment. Expression of the operon rhlAB is required for the bacteria to produce rhamnolipids. We use a combined computational and experimental approach to investigate how P. aeruginosa continually combines current information of population density and nutrient availability to determine if it should express rhlAB. We find that when conditions are nutrient rich, P. aeruginosa uses population density to modulate the amount rhlAB expression, however when the bacteria are starved for nutrients the starvation condition largely determines how the bacteria will express rhlAB. Because the bacteria continually adjust expression based on the current conditions, the molecular decision to produce rhamnolipids can be adjusted if either population density or nutrient conditions change. Our combined computational and experimental approach sheds new light on the rich regulatory dynamics that govern a cellular decision to cooperate.
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Affiliation(s)
- Kerry E. Boyle
- Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, New York, United States of America
- Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
| | - Hilary Monaco
- Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, New York, United States of America
| | - Dave van Ditmarsch
- Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
| | - Maxime Deforet
- Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
| | - Joao B. Xavier
- Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, New York, United States of America
- Program in Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, New York, United States of America
- * E-mail:
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Otzen D. Protein–surfactant interactions: A tale of many states. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:562-91. [DOI: 10.1016/j.bbapap.2011.03.003] [Citation(s) in RCA: 362] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 02/23/2011] [Accepted: 03/04/2011] [Indexed: 10/18/2022]
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13
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Vatsa P, Sanchez L, Clement C, Baillieul F, Dorey S. Rhamnolipid biosurfactants as new players in animal and plant defense against microbes. Int J Mol Sci 2010; 11:5095-108. [PMID: 21614194 PMCID: PMC3100842 DOI: 10.3390/ijms11125095] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 11/15/2010] [Accepted: 12/01/2010] [Indexed: 12/05/2022] Open
Abstract
Rhamnolipids are known as very efficient biosurfactant molecules. They are used in a wide range of industrial applications including food, cosmetics, pharmaceutical formulations and bioremediation of pollutants. The present review provides an overview of the effect of rhamnolipids in animal and plant defense responses. We describe the current knowledge on the stimulation of plant and animal immunity by these molecules, as well as on their direct antimicrobial properties. Given their ecological acceptance owing to their low toxicity and biodegradability, rhamnolipids have the potential to be useful molecules in medicine and to be part of alternative strategies in order to reduce or replace pesticides in agriculture.
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Affiliation(s)
- Parul Vatsa
- Reims Champagne-Ardenne university, URVVC-SE-EA 2069, stress, defense and plant reproduction laboratory, BP 1039, F-51687 Reims cedex 2, France
| | - Lisa Sanchez
- Reims Champagne-Ardenne university, URVVC-SE-EA 2069, stress, defense and plant reproduction laboratory, BP 1039, F-51687 Reims cedex 2, France
| | - Christophe Clement
- Reims Champagne-Ardenne university, URVVC-SE-EA 2069, stress, defense and plant reproduction laboratory, BP 1039, F-51687 Reims cedex 2, France
| | - Fabienne Baillieul
- Reims Champagne-Ardenne university, URVVC-SE-EA 2069, stress, defense and plant reproduction laboratory, BP 1039, F-51687 Reims cedex 2, France
| | - Stephan Dorey
- Reims Champagne-Ardenne university, URVVC-SE-EA 2069, stress, defense and plant reproduction laboratory, BP 1039, F-51687 Reims cedex 2, France
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