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da Silva Neto JX, Dias LP, Lopes de Souza LA, Silva da Costa HP, Vasconcelos IM, Pereira ML, de Oliveira JTA, Cardozo CJP, Gonçalves Moura LFW, de Sousa JS, Carneiro RF, Lopes TDP, Bezerra de Sousa DDO. Insights into the structure and mechanism of action of the anti-candidal lectin Mo-CBP2 and evaluation of its synergistic effect and antibiofilm activity. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Gupta P, Sonewane K, Chouhan S, Rajan M, Chauhan N, Rout O, Kumar A, Baghel G. Pharmacological, ethnomedicinal, and evidence-based comparative review of Moringa oleifera Lam. ( Shigru) and its potential role in the management of malnutrition in tribal regions of India, especially Chhattisgarh. WORLD JOURNAL OF TRADITIONAL CHINESE MEDICINE 2022. [DOI: 10.4103/wjtcm.wjtcm_69_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Williams FE, Lee AK, Orandi S, Lewis DM. Antibacterial action of functional silicon dioxide: an investigation of the attachment and separation of bacteria. ENVIRONMENTAL TECHNOLOGY 2020; 41:703-710. [PMID: 30102131 DOI: 10.1080/09593330.2018.1509887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 07/29/2018] [Indexed: 06/08/2023]
Abstract
Bactericidal proteins from the Moringa oleifera seed are reported to be suitable alternatives to conventional methods of bacterial reduction in water. In this study the cationic bactericidal M. oleifera proteins were isolated by attachment onto the surface of silicon dioxide. This functionalised SiO2(ƒ-SiO2) was then exposed to Escherichia coli and Micrococcus luteus to examine whether the ƒ-SiO2 could be used to inactivate the bacteria. The effect of the non-ionic surfactant dodecyl glucoside on the attachment of these bacteria to the ƒ-SiO2 was examined with the aim of developing a method of reusable bacterial inactivation. The primary result of this study was that the E. coli could be readily separated from the ƒ-SiO2, allowing the ƒ-SiO2 to be used for further bacterial inactivation. The regeneration of the ƒ-SiO2 was demonstrated using fluorescence microscopy on bacterial cells stained with propidium iodide, and zeta potential measurements. Future applications of this work include a reusable method of removing bacteria from contaminated water.
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Affiliation(s)
- Frances E Williams
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
| | - Andrew K Lee
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
| | - Sanaz Orandi
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
| | - David M Lewis
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
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Garcia TB, Soares AA, Costa JH, Costa HPS, Neto JXS, Rocha-Bezerra LCB, Silva FDA, Arantes MR, Sousa DOB, Vasconcelos IM, Oliveira JTA. Gene expression and spatiotemporal localization of antifungal chitin-binding proteins during Moringa oleifera seed development and germination. PLANTA 2019; 249:1503-1519. [PMID: 30706136 DOI: 10.1007/s00425-019-03103-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Chitin-binding proteins behave as storage and antifungal proteins in the seeds of Moringa oleifera. Moringa oleifera is a tropical multipurpose tree. Its seed constituents possess coagulant, bactericidal, fungicidal, and insecticidal properties. Some of these properties are attributed to a group of polypeptides denominated M. oleifera chitin-binding proteins (in short, Mo-CBPs). Within this group, Mo-CBP2, Mo-CBP3, and Mo-CBP4 were previously purified to homogeneity. They showed high amino acid similarity with the 2S albumin storage proteins. These proteins also presented antimicrobial activity against human pathogenic yeast and phytopathogenic fungi. In the present study, the localization and expression of genes that encode Mo-CBPs and the biosynthesis and degradation of the corresponding proteins during morphogenesis and maturation of M. oleifera seeds at 15, 30, 60, and 90 days after anthesis (DAA) and germination, respectively, were assessed. The Mo-CBP transcripts and corresponding proteins were not detected at 15 and 30 days after anthesis (DAA). However, they accumulated at the latter stages of seed maturation (60 and 90 DAA), reaching the maximum level at 60 DAA. The degradation kinetics of Mo-CBPs during seed germination by in situ immunolocalization revealed a reduction in the protein content 48 h after sowing (HAS). Moreover, Mo-CBPs isolated from seeds at 60 and 90 DAA prevented the spore germination of Fusarium spp. Taken together, these results suggest that Mo-CBPs play a dual role as storage and defense proteins in the seeds of M. oleifera.
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Affiliation(s)
- Tarcymara B Garcia
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Arlete A Soares
- Department of Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Jose H Costa
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Helen P S Costa
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - João X S Neto
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | | | - Fredy Davi A Silva
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Mariana R Arantes
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Daniele O B Sousa
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil
| | - Ilka M Vasconcelos
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil.
| | - Jose T A Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Fortaleza, CE, 60440-900, Brazil.
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Neto JXS, Pereira ML, Oliveira JTA, Rocha-Bezerra LCB, Lopes TDP, Costa HPS, Sousa DOB, Rocha BAM, Grangeiro TB, Freire JEC, Monteiro-Moreira ACO, Lobo MDP, Brilhante RSN, Vasconcelos IM. A Chitin-binding Protein Purified from Moringa oleifera Seeds Presents Anticandidal Activity by Increasing Cell Membrane Permeability and Reactive Oxygen Species Production. Front Microbiol 2017. [PMID: 28634471 PMCID: PMC5459921 DOI: 10.3389/fmicb.2017.00980] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Candida species are opportunistic pathogens that infect immunocompromised and/or immunosuppressed patients, particularly in hospital facilities, that besides representing a significant threat to health increase the risk of mortality. Apart from echinocandins and triazoles, which are well tolerated, most of the antifungal drugs used for candidiasis treatment can cause side effects and lead to the development of resistant strains. A promising alternative to the conventional treatments is the use of plant proteins. M. oleifera Lam. is a plant with valuable medicinal properties, including antimicrobial activity. This work aimed to purify a chitin-binding protein from M. oleifera seeds and to evaluate its antifungal properties against Candida species. The purified protein, named Mo-CBP2, represented about 0.2% of the total seed protein and appeared as a single band on native PAGE. By mass spectrometry, Mo-CBP2 presented 13,309 Da. However, by SDS-PAGE, Mo-CBP2 migrated as a single band with an apparent molecular mass of 23,400 Da. Tricine-SDS-PAGE of Mo-CBP2 under reduced conditions revealed two protein bands with apparent molecular masses of 7,900 and 4,600 Da. Altogether, these results suggest that Mo-CBP2 exists in different oligomeric forms. Moreover, Mo-CBP2 is a basic glycoprotein (pI 10.9) with 4.1% (m/m) sugar and it did not display hemagglutinating and hemolytic activities upon rabbit and human erythrocytes. A comparative analysis of the sequence of triptic peptides from Mo-CBP2 in solution, after LC-ESI-MS/MS, revealed similarity with other M. oleifera proteins, as the 2S albumin Mo-CBP3 and flocculating proteins, and 2S albumins from different species. Mo-CBP2 possesses in vitro antifungal activity against Candida albicans, C. parapsilosis, C. krusei, and C. tropicalis, with MIC50 and MIC90 values ranging between 9.45–37.90 and 155.84–260.29 μM, respectively. In addition, Mo-CBP2 (18.90 μM) increased the cell membrane permeabilization and reactive oxygen species production in C. albicans and promoted degradation of circular plasmid DNA (pUC18) from Escherichia coli. The data presented in this study highlight the potential use of Mo-CBP2 as an anticandidal agent, based on its ability to inhibit Candida spp. growth with apparently low toxicity on mammalian cells.
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Affiliation(s)
- João X S Neto
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Mirella L Pereira
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Jose T A Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Lady C B Rocha-Bezerra
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Tiago D P Lopes
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Helen P S Costa
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Daniele O B Sousa
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | - Bruno A M Rocha
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | | | - José E C Freire
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
| | | | - Marina D P Lobo
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil.,School of Pharmacy, University of FortalezaFortaleza, Brazil
| | - Raimunda S N Brilhante
- Department of Pathology and Legal Medicine, Federal University of CearaFortaleza, Brazil
| | - Ilka M Vasconcelos
- Department of Biochemistry and Molecular Biology, Federal University of CearaFortaleza, Brazil
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On/off-switchable LSPR nano-immunoassay for troponin-T. Sci Rep 2017; 7:44027. [PMID: 28382946 PMCID: PMC5382532 DOI: 10.1038/srep44027] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 01/31/2017] [Indexed: 12/25/2022] Open
Abstract
Regeneration of immunosensors is a longstanding challenge. We have developed a re-usable troponin-T (TnT) immunoassay based on localised surface plasmon resonance (LSPR) at gold nanorods (GNR). Thermosensitive poly(N-isopropylacrylamide) (PNIPAAM) was functionalised with anti-TnT to control the affinity interaction with TnT. The LSPR was extremely sensitive to the dielectric constant of the surrounding medium as modulated by antigen binding after 20 min incubation at 37 °C. Computational modelling incorporating molecular docking, molecular dynamics and free energy calculations was used to elucidate the interactions between the various subsystems namely, IgG-antibody (c.f., anti-TnT), PNIPAAM and/or TnT. This study demonstrates a remarkable temperature dependent immuno-interaction due to changes in the PNIPAAM secondary structures, i.e., globular and coil, at above or below the lower critical solution temperature (LCST). A series of concentrations of TnT were measured by correlating the λLSPR shift with relative changes in extinction intensity at the distinct plasmonic maximum (i.e., 832 nm). The magnitude of the red shift in λLSPR was nearly linear with increasing concentration of TnT, over the range 7.6 × 10−15 to 9.1 × 10−4 g/mL. The LSPR based nano-immunoassay could be simply regenerated by switching the polymer conformation and creating a gradient of microenvironments between the two states with a modest change in temperature.
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Shebek K, Schantz AB, Sines I, Lauser K, Velegol S, Kumar M. The Flocculating Cationic Polypetide from Moringa oleifera Seeds Damages Bacterial Cell Membranes by Causing Membrane Fusion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4496-4502. [PMID: 25845029 DOI: 10.1021/acs.langmuir.5b00015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A cationic protein isolated from the seeds of the Moringa oleifera tree has been extensively studied for use in water treatment in developing countries and has been proposed for use in antimicrobial and therapeutic applications. However, the molecular basis for the antimicrobial action of this peptide, Moringa oleifera cationic protein (MOCP), has not been previously elucidated. We demonstrate here that a dominant mechanism of MOCP antimicrobial activity is membrane fusion. We used a combination of cryogenic electron microscopy (cryo-EM) and fluorescence assays to observe and study the kinetics of fusion of membranes in liposomes representing model microbial cells. We also conducted cryo-EM experiments on E. coli cells where MOCP was seen to fuse the inner and outer membranes. Coarse-grained molecular dynamics simulations of membrane vesicles with MOCP molecules were used to elucidate steps in peptide adsorption, stalk formation, and fusion between membranes.
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Affiliation(s)
- Kevin Shebek
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Allen B Schantz
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ian Sines
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kathleen Lauser
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Stephanie Velegol
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Manish Kumar
- †Department of Chemical Engineering and ‡Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Al-Anizi AA, Hellyer MT, Zhang D. Toxicity assessment and modelling of Moringa oleifera seeds in water purification by whole cell bioreporter. WATER RESEARCH 2014; 56:77-87. [PMID: 24657325 DOI: 10.1016/j.watres.2014.02.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 02/24/2014] [Accepted: 02/26/2014] [Indexed: 06/03/2023]
Abstract
Moringa oleifera has been used as a coagulation reagent for drinking water purification, especially in developing countries such as Malawi. This research revealed the cytoxicity and genotoxicity of M. oleifera by Acinetobacter bioreporter. The results indicated that significant cytoxicity effects were observed when the powdered M. oleifera seeds concentration is from 1 to 50 mg/L. Through direct contact, ethanolic-water extraction and hexane extraction, the toxic effects of hydrophobic and hydrophilic components in M. oleifera seeds were distinguished. It suggested that the hydrophobic lipids contributed to the dominant cytoxicity, consequently resulting in the dominant genotoxicity in the water-soluble fraction due to limited dissolution when the M. oleifera seeds granule concentration was from 10 to 1000 mg/L. Based on cytoxicity and genotoxicity model, the LC50 and LC90 of M. oleifera seeds were 8.5 mg/L and 300 mg/L respectively and their genotoxicity was equivalent to 8.3 mg mitomycin C per 1.0 g dry M. oleifera seed. The toxicity of M. oleifera has also remarkable synergistic effects, suggesting whole cell bioreporter as an appropriate and complementary tool to chemical analysis for environmental toxicity assessment.
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Affiliation(s)
| | | | - Dayi Zhang
- Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK.
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Pavankumar AR, Norén J, Singh L, Chandappa Gowda NK. Scaling-up the production of recombinant Moringa oleifera coagulant protein for large-scale water treatment applications. RSC Adv 2014. [DOI: 10.1039/c3ra46654j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Scaling-up the production of Moringa oleifera coagulant protein to industrial level reveals it multiple advantages over the usage of chemical disinfectants and serves as a natural remedy for water treatment processes.
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Affiliation(s)
- Asalapuram Ramachandran Pavankumar
- Department of Industrial Biotechnology
- School of Biotechnology
- Royal Institute of Technology (KTH)
- 10691 Stockholm, Sweden
- Lab4Life Bio-Research Private Limited
| | - Johan Norén
- Department of Industrial Biotechnology
- School of Biotechnology
- Royal Institute of Technology (KTH)
- 10691 Stockholm, Sweden
| | - Lakhvinder Singh
- Department of Industrial Biotechnology
- School of Biotechnology
- Royal Institute of Technology (KTH)
- 10691 Stockholm, Sweden
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