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Wei J, Zhang X, Ismael M, Zhong Q. Anti-Biofilm Effects of Z102-E of Lactiplantibacillus plantarum against Listeria monocytogenes and the Mechanism Revealed by Transcriptomic Analysis. Foods 2024; 13:2495. [PMID: 39200422 PMCID: PMC11354177 DOI: 10.3390/foods13162495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 09/02/2024] Open
Abstract
Lactic acid bacteria (LAB) are the most common probiotics, and they present excellent inhibitory effects on pathogenic bacteria. This study aimed to explore the anti-biofilm potential of the purified active substance of Lactiplantibacillus plantarum, named Z102-E. The effects of Z102-E on Listeria monocytogenes were investigated in detail, and a transcriptomic analysis was conducted to reveal the anti-biofilm mechanism. The results indicated that the sub-MIC of Z102-E (3.2, 1.6, and 0.8 mg/mL) decreased the bacterial growth and effectively reduced the self-aggregation, surface hydrophobicity, sugar utilization, motility, biofilm formation, AI-2 signal molecule, contents of extracellular polysaccharides, and extracellular protein of L. monocytogenes. Moreover, the inverted fluorescence microscopy observation confirmed the anti-biofilm effect of Z102-E. The transcriptomic analysis indicated that 117 genes were up-regulated and 214 were down-regulated. Z102-E regulated the expressions of genes related to L. monocytogenes quorum sensing, biofilm formation, etc. These findings suggested that Z102-E has great application potential as a natural bacteriostatic agent.
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Affiliation(s)
| | | | | | - Qingping Zhong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China; (J.W.); (X.Z.); (M.I.)
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Chudinov VS, Shardakov IN, Litvinov VV, Friend GG, Solodnikov SY, Maslova VV. Assessment of Blood Clot Formation in the Rabbit Artery upon Implantation of Polyurethane Vascular Prosthesis Treated with Nitrogen Plasma. Biophysics (Nagoya-shi) 2022. [DOI: 10.1134/s0006350922060069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
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Vanags LZ, Tan JTM, Santos M, Michael PS, Ali Z, Bilek MMM, Wise SG, Bursill CA. Plasma activated coating immobilizes apolipoprotein A-I to stainless steel surfaces in its bioactive form and enhances biocompatibility. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2141-2150. [PMID: 28668625 DOI: 10.1016/j.nano.2017.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 05/24/2017] [Accepted: 06/21/2017] [Indexed: 11/29/2022]
Abstract
We utilized a plasma activated coating (PAC) to covalently bind the active component of high density lipoproteins (HDL), apolipoprotein (apo) A-I, to stainless steel (SS) surfaces. ApoA-I suppresses restenosis and thrombosis and may therefore improve SS stent biocompatibility. PAC-coated SS significantly increased the covalent attachment of apoA-I, compared to SS alone. In static and dynamic flow thrombosis assays, PAC+apoA-I inhibited thrombosis and reduced platelet activation marker p-selectin. PAC+apoA-I reduced smooth muscle cell attachment and proliferation, and augmented EC attachment to PAC. We then coated PAC onto murine SS stents and found it did not peel or delaminate following crimping/expansion. ApoA-I was immobilized onto PAC-SS stents and was retained as a monolayer when exposed to pulsatile flow in vivo in a murine stent model. In conclusion, ApoA-I immobilized on PAC withstands pulsatile flow in vivo and retains its bioactivity, exhibiting anti-thrombotic and anti-restenotic properties, demonstrating the potential to improve stent biocompatibility.
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Affiliation(s)
- Laura Z Vanags
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
| | - Joanne T M Tan
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
| | - Miguel Santos
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia; School of Physics, University of Sydney, Sydney, New South Wales, Australia.
| | - Praveesuda S Michael
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
| | - Ziad Ali
- Translational Medicine, University of Columbia, NY, New York, USA.
| | - Marcela M M Bilek
- School of Physics, University of Sydney, Sydney, New South Wales, Australia.
| | - Steven G Wise
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia; School of Molecular Bioscience, University of Sydney, Sydney, New South Wales, Australia.
| | - Christina A Bursill
- The Heart Research Institute, Sydney, New South Wales, Australia; Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
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Care A, Petroll K, Gibson ESY, Bergquist PL, Sunna A. Solid-binding peptides for immobilisation of thermostable enzymes to hydrolyse biomass polysaccharides. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:29. [PMID: 28184244 PMCID: PMC5289021 DOI: 10.1186/s13068-017-0715-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/19/2017] [Indexed: 05/04/2023]
Abstract
BACKGROUND Solid-binding peptides (SBPs) bind strongly to a diverse range of solid materials without the need for any chemical reactions. They have been used mainly for the functionalisation of nanomaterials but little is known about their use for the immobilisation of thermostable enzymes and their feasibility in industrial-scale biocatalysis. RESULTS A silica-binding SBP sequence was fused genetically to three thermostable hemicellulases. The resulting enzymes were active after fusion and exhibited identical pH and temperature optima but differing thermostabilities when compared to their corresponding unmodified enzymes. The silica-binding peptide mediated the efficient immobilisation of each enzyme onto zeolite, demonstrating the construction of single enzyme biocatalytic modules. Cross-linked enzyme aggregates (CLEAs) of enzyme preparations either with or without zeolite immobilisation displayed greater activity retention during enzyme recycling than those of free enzymes (without silica-binding peptide) or zeolite-bound enzymes without any crosslinking. CLEA preparations comprising all three enzymes simultaneously immobilised onto zeolite enabled the formation of multiple enzyme biocatalytic modules which were shown to degrade several hemicellulosic substrates. CONCLUSIONS The current work introduced the construction of functional biocatalytic modules for the hydrolysis of simple and complex polysaccharides. This technology exploited a silica-binding SBP to mediate effectively the rapid and simple immobilisation of thermostable enzymes onto readily-available and inexpensive silica-based matrices. A conceptual application of biocatalytic modules consisting of single or multiple enzymes was validated by hydrolysing various hemicellulosic polysaccharides.
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Affiliation(s)
- Andrew Care
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, Australia
| | - Kerstin Petroll
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
| | - Emily S. Y. Gibson
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
| | - Peter L. Bergquist
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
- Department of Molecular Medicine & Pathology, Medical School, University of Auckland, Auckland, New Zealand
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, Australia
| | - Anwar Sunna
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, Australia
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, Australia
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Tran CT, Kondyurin A, Chrzanowski W, Bilek MM, McKenzie DR. Increasing binding density of yeast cells by control of surface charge with allylamine grafting to ion modified polymer surfaces. Colloids Surf B Biointerfaces 2014; 122:537-544. [DOI: 10.1016/j.colsurfb.2014.07.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/20/2014] [Accepted: 07/15/2014] [Indexed: 10/25/2022]
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Zucca P, Sanjust E. Inorganic materials as supports for covalent enzyme immobilization: methods and mechanisms. Molecules 2014; 19:14139-94. [PMID: 25207718 PMCID: PMC6272024 DOI: 10.3390/molecules190914139] [Citation(s) in RCA: 259] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 08/09/2014] [Accepted: 08/22/2014] [Indexed: 01/23/2023] Open
Abstract
Several inorganic materials are potentially suitable for enzymatic covalent immobilization, by means of several different techniques. Such materials must meet stringent criteria to be suitable as solid matrices: complete insolubility in water, reasonable mechanical strength and chemical resistance under the operational conditions, the capability to form manageable particles with high surface area, reactivity towards derivatizing/functionalizing agents. Non-specific protein adsorption should be always considered when planning covalent immobilization on inorganic solids. A huge mass of experimental work has shown that silica, silicates, borosilicates and aluminosilicates, alumina, titania, and other oxides, are the materials of choice when attempting enzyme immobilizations on inorganic supports. More recently, some forms of elemental carbon, silicon, and certain metals have been also proposed for certain applications. With regard to the derivatization/functionalization techniques, the use of organosilanes through silanization is undoubtedly the most studied and the most applied, although inorganic bridge formation and acylation with selected acyl halides have been deeply studied. In the present article, the most common inorganic supports for covalent immobilization of the enzymes are reviewed, with particular focus on their advantages and disadvantages in terms of enzyme loadings, operational stability, undesired adsorption, and costs. Mechanisms and methods for covalent immobilization are also discussed, focusing on the most widespread activating approaches (such as glutaraldehyde, cyanogen bromide, divinylsulfone, carbodiimides, carbonyldiimidazole, sulfonyl chlorides, chlorocarbonates, N-hydroxysuccinimides).
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Affiliation(s)
- Paolo Zucca
- Consorzio UNO, Consortium University of Oristano, Oristano 09170, Italy.
| | - Enrico Sanjust
- Dipartimento di Scienze Biomediche, Università di Cagliari, Monserrato 09042, Italy.
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