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Li S, Li N, Wang Y, Zhang X, Wang J, Zhang M, Chen H. Structural Characterization of the Staphylococcus aureus Targeting Lectin Peptides from Garlic (Allium sativum L) by Liquid Nitrogen Grinding Coupled with the Proteomic and Antimicrobial Mechanism Analysis. Probiotics Antimicrob Proteins 2024; 16:964-978. [PMID: 37217612 DOI: 10.1007/s12602-023-10078-2] [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] [Accepted: 04/17/2023] [Indexed: 05/24/2023]
Abstract
Garlic has long been used as an antimicrobial spice and herbal remedy. The aim of this study was to isolate the antimicrobial agent in garlic water extract against Staphylococcus aureus (S. aureus) and investigate its antimicrobial mechanism. By an activity-guided separation, garlic lectin-derived peptides (GLDPs) with main molecular weight of around 12 kDa were extracted by liquid nitrogen grinding and identified with high bactericidal activity toward S. aureus, and the MIC was determined as 24.38 μg/mL. In-gel digestion-based proteomic analysis indicated that the peptide sequences were highly identical to the B strain of garlic protein lectin II. Structure analysis suggested that the secondary structure was strongly affected by lyophilization and thus resulted in the inactivation of GLDPs (P < 0.05). Mechanism study revealed that treatment of GLDPs resulted in cell membrane depolarization in a dose-dependent manner, and the disruptions of the cell wall and membrane integrities were observed under electric microscopies. GLDPs could successfully dock with cell wall component lipoteichoic acid (LTA) via van der Waals and conventional bonds in molecular docking analysis. These results suggested that GLDPs were responsible for the S. aureus targeting activity and might be promising candidates for antibiotic development against bacterial infection.
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Affiliation(s)
- Shuqin Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Nannan Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Yajie Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Xiaoyu Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Jia Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Min Zhang
- Tianjin Agricultural University, Tianjin, 300384, People's Republic of China
- State Key Laboratory of Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, 300457, People's Republic of China
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China.
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2
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Zhao JM, Wang YK, Shi BW, Wang YX, Jiang YF, Yang GL, Gao XD, Qiang T. Microwave biosensor for the detection of growth inhibition of human liver cancer cells at different concentrations of chemotherapeutic drug. Front Bioeng Biotechnol 2024; 12:1398189. [PMID: 38803847 PMCID: PMC11128630 DOI: 10.3389/fbioe.2024.1398189] [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: 03/09/2024] [Accepted: 04/23/2024] [Indexed: 05/29/2024] Open
Abstract
Cytotoxicity assays are crucial for assessing the efficacy of drugs in killing cancer cells and determining their potential therapeutic value. Measurement of the effect of drug concentration, which is an influence factor on cytotoxicity, is of great importance. This paper proposes a cytotoxicity assay using microwave sensors in an end-point approach based on the detection of the number of live cells for the first time. In contrast to optical methods like fluorescent labeling, this research uses a resonator-type microwave biosensor to evaluate the effects of drug concentrations on cytotoxicity by monitoring electrical parameter changes due to varying cell densities. Initially, the feasibility of treating cells with ultrapure water for cell counting by a microwave biosensor is confirmed. Subsequently, inhibition curves generated by both the CCK-8 method and the new microwave biosensor for various drug concentrations were compared and found to be congruent. This agreement supports the potential of microwave-based methods to quantify cell growth inhibition by drug concentrations.
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Affiliation(s)
- Jun-Ming Zhao
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
| | - Yi-Ke Wang
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
| | - Bo-Wen Shi
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
| | - Yan-Xiong Wang
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
| | - Yan-Feng Jiang
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
| | - Gang-Long Yang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- Key Laboratory of Biopharmaceutical Preparation and Delivery, Chinese Academy of Sciences, Beijing, China
| | - Xiao-Dong Gao
- School of Biotechnology, the Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Tian Qiang
- School of Internet of Things Engineering, Institute of Advanced Technology, Jiangnan University, Wuxi, China
- School of Biotechnology, the Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
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3
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Choi GH, Holzapfel WH, Todorov SD. Diversity of the bacteriocins, their classification and potential applications in combat of antibiotic resistant and clinically relevant pathogens. Crit Rev Microbiol 2023; 49:578-597. [PMID: 35731254 DOI: 10.1080/1040841x.2022.2090227] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/18/2022] [Accepted: 06/13/2022] [Indexed: 12/19/2022]
Abstract
There is almost a century since discovery of penicillin by Alexander Fleming, a century of enthusiasm, abuse, facing development of antibiotic-resistance and clear conclusion that the modern medicine needs a new type of antimicrobials. Bacteriocins produced by Gram-positive and Gram-negative bacteria, Archaea and Eukaryotes were widely explored as potential antimicrobials with several applications in food industry. In last two decades bacteriocins showed their potential as promising alternative therapeutic for the treatment of antibiotic-resistant pathogens. Bacteriocins can be characterised as highly selective antimicrobials and therapeutics with low cytotoxicity. Most probably in order to solve the problems associated with the increasing number of antibiotic-resistant bacteria, the application of natural or bioengineered bacteriocins in addition to synergistically acting preparations of bacteriocins and conventional antibiotics, can be the next step in combat versus drug-resistant pathogens. In this overview we focussed on diversity of specific lactic acid bacteria and their bacteriocins. Moreover, some additional examples of bacteriocins from non-lactic acid, Gram-positive and Gram-negative bacteria, Archaea and eukaryotic organisms are presented and discussed. Therapeutic properties of bacteriocins, their bioengineering and combined applications, together with conventional antibiotics, were evaluated with the scope of application in human and veterinary medicine for combating (multi-)drug-resistant pathogens.
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Affiliation(s)
- Gee-Hyeun Choi
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
| | - Wilhelm Heinrich Holzapfel
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
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4
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Rashid M, Sharma S, Kaur A, Kaur A, Kaur S. Biopreservative efficacy of Enterococcus faecium-immobilised film and its enterocin against Salmonella enterica. AMB Express 2023; 13:11. [PMID: 36690815 PMCID: PMC9871141 DOI: 10.1186/s13568-023-01516-z] [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: 10/27/2022] [Accepted: 01/12/2023] [Indexed: 01/24/2023] Open
Abstract
The growing awareness about the adverse health effects of artificial synthetic preservatives has led to a rapid increase in the demand for safe food preservation techniques and bio preservatives. Thus, in this study, the biopreservatives efficacy of enterocin-producing Enterococcus faecium Smr18 and its enterocin, ESmr18 was evaluated against Salmonella enterica contamination in chicken samples. E. faecium Smr18 is susceptible to the antibiotics penicillin-G, ampicillin, vancomycin, and erythromycin, thereby indicating that it is a nonpathogenic strain. Further, the enterocin ESmr18 was purified and characterised as a 3.8 kDa peptide. It possessed broad spectrum antibacterial activity against both Gram-positive and Gram-negative pathogens including S. enterica serotypes Typhi and Typhimurium. Purified ESmr18 disrupted the cell membrane permeability of the target cell thereby causing rapid efflux of potassium ions from L. monocytogenes and S. enterica. Chicken samples inoculated with S. enterica and packaged in alginate films containing immobilised viable E. faecium resulted in 3 log10 colony forming units (CFU) reduction in the counts of S. enterica after 34 days of storage at 7-8 °C. The crude preparation of ESmr18 also significantly (p < 0.05) reduced the CFU counts of salmonella-inoculated chicken meat model. Purified ESmr18 at the concentration upto 4.98 µg/ml had no cytolytic effect against human red blood cells. Crude preparation of ESmr18 when orally administered in fish did not cause any significant (p < 0.05) change in the biochemical parameters of sera samples. Nonsignificant changes in the parameters of comet and micronucleus assays were observed between the treated and untreated groups of fishes that further indicated the safety profile of the enterocin ESmr18.
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Affiliation(s)
- Muzamil Rashid
- grid.411894.10000 0001 0726 8286Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab India
| | - Sunil Sharma
- grid.411894.10000 0001 0726 8286Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab India
| | - Arvinder Kaur
- grid.411894.10000 0001 0726 8286Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab India
| | - Amarjeet Kaur
- grid.411894.10000 0001 0726 8286Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab India
| | - Sukhraj Kaur
- grid.411894.10000 0001 0726 8286Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab India
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5
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Ortiz-Rodríguez T, Mendoza-Acosta F, Martínez-Zavala SA, Salcedo-Hernández R, Casados-Vázquez LE, Bideshi DK, Barboza-Corona JE. Thurincin H Is a Nonhemolytic Bacteriocin of Bacillus thuringiensis with Potential for Applied Use. Probiotics Antimicrob Proteins 2022:10.1007/s12602-022-09952-2. [PMID: 35610496 DOI: 10.1007/s12602-022-09952-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2022] [Indexed: 11/24/2022]
Abstract
Thurincin H, a bacteriocin produced by Bacillus thuringiensis, exhibits antibacterial activity against Gram-positive and Gram-negative bacteria. While much is known about its expression and antimicrobial spectrum, its hemolytic property has yet to be established. In this study, thurincin H was produced in a plasmid-free acrystalliferous strain of B. thuringiensis (Bt Cry-B) that naturally lacked antimicrobial and hemolytic activities. When grown in Tryptic Soy Broth (TSB), the bacteriocin's maximal production in Bt Cry-B harboring the thurincin H genetic cluster (Bt Cry-B/pThur) was observed at 24 h. Thurincin H was purified as a sole peptide of ~5 kDa using three purification steps, i.e., salt precipitation, ultrafiltration, and gel filtration chromatography. The bacteriocin showed inhibitory activity against B. cereus (5631 U), Bt Cry-B (8827 U), E. faecium wild type (11,197 U), and E. faecium ATCC 19,434 (6950 U), but not against Bt Cry-B/pThurH and Bt Cry-B/pThurHΔThnA. In addition, a minimum inhibitory concentration (MIC) of 5.0 μg/mL against B. cereus 183 was observed. In silico predictions suggested that thuricin H lacks hemolytic activity, which was validated in vitro using 4 × the MIC, i.e., 20 μg/ml. Our data lay a foundation for the potential safe use of thurincin H as an antibacterial peptide for medical use, in food products, and for expression in probiotic bacteria.
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Affiliation(s)
- Tomás Ortiz-Rodríguez
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Fernanda Mendoza-Acosta
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Sheila A Martínez-Zavala
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Rubén Salcedo-Hernández
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Luz E Casados-Vázquez
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,CONACYT- Universidad de Guanajuato, Campus Irapuato-Salamanca, Irapuato, Guanajuato, 36500, México
| | - Dennis K Bideshi
- Department of Biological Sciences, California Baptist University, 8432 Magnolia Avenue, Riverside, CA, 92504, USA
| | - José E Barboza-Corona
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México. .,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.
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6
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Lactic Acid Bacteria Bacteriocin, an Antimicrobial Peptide Effective Against Multidrug Resistance: a Comprehensive Review. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10317-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Characterization and Cytotoxic Evaluation of Bacteriocins Possessing Antibiofilm Activity Produced by Lactobacillus plantarum SJ33. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10210-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Flynn J, Ryan A, Hudson SP. Pre-formulation and delivery strategies for the development of bacteriocins as next generation antibiotics. Eur J Pharm Biopharm 2021; 165:149-163. [PMID: 34020021 DOI: 10.1016/j.ejpb.2021.05.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
Bacteriocins, a class of antimicrobial peptide produced by bacteria, may offer a potential alternative to traditional antibiotics, an important step towards mitigating the ever-increasing antimicrobial resistance crisis. They are active against a range of clinically relevant Gram-positive and Gram-negative bacteria. Bacteriocins have been discussed in the literature for over a century. Although they are used as preservatives in food, no medicine based on their antimicrobial activity exists on the market today. In order to formulate them into clinical antibiotics, pre-formulation studies on their biophysical and physicochemical properties that will influence their activity in vivo and their stability during manufacture must be elucidated. Thermal, pH and enzymatic stability of bacteriocins are commonly studied and regularly reported in the literature. Solubility, permeability and aggregation properties on the other hand are less frequently reported for many bacteriocins, which may contribute to their poor clinical progression. Promising cytotoxicity studies report that bacteriocins exhibit few cytotoxic effects on a variety of mammalian cell lines, at active concentrations. This review highlights the lack of quantitative data and in many cases even qualitative data, on bacteriocins' solubility, stability, aggregation, permeability and cytotoxicity. The formulation strategies that have been explored to date, proposed routes of administration, trends in in vitro/in vivo behaviour and efforts in clinical development are discussed. The future promise of bacteriocins as a new generation of antibiotics may require tailored local delivery strategies to fulfil their potential as a force to combat antimicrobial-resistant bacterial infections.
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Affiliation(s)
- James Flynn
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland
| | - Aoibhín Ryan
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland
| | - Sarah P Hudson
- Department of Chemical Sciences, SSPC, the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Ireland.
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9
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Fathizadeh H, Saffari M, Esmaeili D, Moniri R, Kafil HS. Bacteriocins: New Potential Therapeutic Candidates in Cancer Therapy. Curr Mol Med 2021; 21:211-220. [PMID: 33109060 DOI: 10.2174/1566524020999200817113730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 11/22/2022]
Abstract
Cancer is one of the most important disorders which is associated with high mortality and high costs of treatment for patients. Despite several efforts, finding, designing and developing, new therapeutic platforms in the treatment of cancer patients are still required. Utilization of microorganisms, particularly bacteria has emerged as new therapeutic approaches in the treatment of various cancers. Increasing data indicated that bacteria could be used in the production of a wide range of anti-cancer agents, including bacteriocins, antibiotics, peptides, enzymes, and toxins. Among these anti-cancer agents, bacteriocins have attractive properties, which make them powerful anti-cancer drugs. Multiple lines evidence indicated that several bacteriocins (i.e., colcins, nisins, pediocins, pyocins, and bovocins) via activation/inhibition different cellular and molecular signaling pathways are able to suppress tumor growth in various stages. Hence, identification and using various bacteriocins could lead to improve and introduce them to clinical practices. Here, we summarized various bacteriocins which could be employed as anti-cancer agents in the treatment of many cancers.
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Affiliation(s)
- Hadis Fathizadeh
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Mahmood Saffari
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Davoud Esmaeili
- Department of Microbiology and Applied Microbiology Research Center, Systems biology and poisonings institute, Baqiyatallah University of Medical sciences, Tehran, Iran
| | - Rezvan Moniri
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Hossein Samadi Kafil
- Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Iran
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10
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Junges da Costa R, Pereira da Silva A, Nobre da Fonseca R, de Oliveira Hübner S, Nalério ES, de Lima Marques J, Soares Vitola HR, Padilha da Silva W, Duval EH, Fiorentini ÂM. Characterization of Enterococcus faecium EO1 isolated from mutton and activity of bacteriocin-like substances in the control of Listeria monocytogenes in fresh mutton sausage. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.110954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Heymich ML, Nißl L, Hahn D, Noll M, Pischetsrieder M. Antioxidative, Antifungal and Additive Activity of the Antimicrobial Peptides Leg1 and Leg2 from Chickpea. Foods 2021; 10:foods10030585. [PMID: 33799496 PMCID: PMC7998185 DOI: 10.3390/foods10030585] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/01/2021] [Accepted: 03/04/2021] [Indexed: 01/29/2023] Open
Abstract
The fight against food waste benefits from novel agents inhibiting spoilage. The present study investigated the preservative potential of the antimicrobial peptides Leg1 (RIKTVTSFDLPALRFLKL) and Leg2 (RIKTVTSFDLPALRWLKL) recently identified in chickpea legumin hydrolysates. Checkerboard assays revealed strong additive antimicrobial effects of Leg1/Leg2 with sodium benzoate against Escherichia coli and Bacillus subtilis with fractional inhibitory concentrations of 0.625 and 0.75. Additionally, Leg1/Leg2 displayed antifungal activity with minimum inhibitory concentrations of 500/250 µM against Saccharomyces cerevisiae and 250/125 µM against Zygosaccharomyces bailii. In contrast, no cytotoxic effects were observed against human Caco-2 cells at concentrations below 2000 µM (Leg1) and 1000 µM (Leg2). Particularly Leg2 showed antioxidative activity by radical scavenging and reducing mechanisms (maximally 91.5/86.3% compared to 91.2/94.7% for the control ascorbic acid). The present results demonstrate that Leg1/Leg2 have the potential to be applied as preservatives protecting food and other products against bacterial, fungal and oxidative spoilage.
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Affiliation(s)
- Marie-Louise Heymich
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany; (M.-L.H.); (D.H.)
| | - Laura Nißl
- Institute for Bioanalysis, Department of Applied Sciences, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany; (L.N.); (M.N.)
| | - Dominik Hahn
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany; (M.-L.H.); (D.H.)
| | - Matthias Noll
- Institute for Bioanalysis, Department of Applied Sciences, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany; (L.N.); (M.N.)
| | - Monika Pischetsrieder
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany; (M.-L.H.); (D.H.)
- Correspondence:
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12
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Bacteriocins in the Era of Antibiotic Resistance: Rising to the Challenge. Pharmaceutics 2021; 13:pharmaceutics13020196. [PMID: 33540560 PMCID: PMC7912925 DOI: 10.3390/pharmaceutics13020196] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023] Open
Abstract
Decades of antibiotic misuse in clinical settings, animal feed, and within the food industry have led to a concerning rise in antibiotic-resistant bacteria. Every year, antimicrobial-resistant infections cause 700,000 deaths, with 10 million casualties expected by 2050, if this trend continues. Hence, innovative solutions are imperative to curb antibiotic resistance. Bacteria produce a potent arsenal of drugs with remarkable diversity that are all distinct from those of current antibiotics. Bacteriocins are potent small antimicrobial peptides synthetized by certain bacteria that may be appointed as alternatives to traditional antibiotics. These molecules are strategically employed by commensals, mostly Firmicutes, to colonize and persist in the human gut. Bacteriocins form channels in the target cell membrane, leading to leakage of low-molecular-weight, causing the disruption of the proton motive force. The objective of this review was to list and discuss the potential of bacteriocins as antimicrobial therapeutics for infections produced mainly by resistant pathogens.
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13
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Kim J, Jeon S, Kang SJ, Kim KR, Thai HBD, Lee S, Kim S, Lee YS, Ahn DR. Lung-targeted delivery of TGF-β antisense oligonucleotides to treat pulmonary fibrosis. J Control Release 2020; 322:108-121. [PMID: 32179111 DOI: 10.1016/j.jconrel.2020.03.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 01/19/2023]
Abstract
Pulmonary fibrosis is a serious respiratory disease, with limited therapeutic options. Since TGF-β is a critical factor in the fibrotic process, downregulation of this cytokine has been considered a potential approach for disease treatment. Herein, we designed a new lung-targeted delivery technology based on the complexation of polymeric antisense oligonucleotides (pASO) and dimeric human β-defensin 23 (DhBD23). Antisense oligonucleotides targeting TGF-β mRNA were polymerized by rolling circle amplification and complexed with DhBD23. After complexation with DhBD23, pASO showed improved serum stability and enhanced uptake by fibroblasts in vitro and lung-specific accumulation upon intravenous injection in vivo. The pASO/DhBD23 complex delivered into the lung downregulated target mRNA, and subsequently alleviated lung fibrosis in mice, as demonstrated by western blotting, quantitative reverse-transcriptase PCR (qRT-PCR), immunohistochemistry, and immunofluorescence imaging. Moreover, as the complex was prepared only with highly biocompatible materials such as DNA and human-derived peptides, no systemic toxicity was observed in major organs. Therefore, the pASO/DhBD23 complex is a promising gene therapy platform with lung-targeting ability to treat various pulmonary diseases, including pulmonary fibrosis, with low side effects.
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Affiliation(s)
- Junghyun Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Seulgi Jeon
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Ewhayeodae-gil 52, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Seong Jae Kang
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Kyoung-Ran Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Hien Bao Dieu Thai
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Seokyung Lee
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Yun-Sil Lee
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Ewhayeodae-gil 52, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Dae-Ro Ahn
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea; Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology (UST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea.
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14
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Cebrián R, Rodríguez-Cabezas ME, Martín-Escolano R, Rubiño S, Garrido-Barros M, Montalbán-López M, Rosales MJ, Sánchez-Moreno M, Valdivia E, Martínez-Bueno M, Marín C, Gálvez J, Maqueda M. Preclinical studies of toxicity and safety of the AS-48 bacteriocin. J Adv Res 2019; 20:129-139. [PMID: 31360546 PMCID: PMC6637140 DOI: 10.1016/j.jare.2019.06.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/25/2019] [Accepted: 06/29/2019] [Indexed: 12/15/2022] Open
Abstract
The in vitro antimicrobial potency of the bacteriocin AS-48 is well documented, but its clinical application requires investigation, as its toxicity could be different in in vitro (haemolytic and antibacterial activity in blood and cytotoxicity towards normal human cell lines) and in vivo (e.g. mice and zebrafish embryos) models. Overall, the results obtained are promising. They reveal the negligible propensity of AS-48 to cause cell death or impede cell growth at therapeutic concentrations (up to 27 μM) and support the suitability of this peptide as a potential therapeutic agent against several microbial infections, due to its selectivity and potency at low concentrations (in the range of 0.3-8.9 μM). In addition, AS-48 exhibits low haemolytic activity in whole blood and does not induce nitrite accumulation in non-stimulated RAW macrophages, indicating a lack of pro-inflammatory effects. The unexpected heightened sensitivity of zebrafish embryos to AS-48 could be due to the low differentiation state of these cells. The low cytotoxicity of AS-48, the absence of lymphocyte proliferation in vivo after skin sensitization in mice, and the lack of toxicity in a murine model support the consideration of the broad spectrum antimicrobial peptide AS-48 as a promising therapeutic agent for the control of a vast array of microbial infections, in particular, those involved in skin and soft tissue diseases.
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Affiliation(s)
- Rubén Cebrián
- Department of Molecular Genetics, Faculty of Science and Engineering, Nijenborgh 7, 9747 AG, University of Groningen, Groningen, the Netherlands
| | - M Elena Rodríguez-Cabezas
- CIBER-EHD, Department of Pharmacology. Centre for Biomedical Research (CIBM), Avda del Conocimiento s/n, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain
| | - Rubén Martín-Escolano
- Department of Parasitology, Instituto de Investigación Biosanitaria (ibs.Granada), Hospitales Universitarios de Granada/University of Granada, Severo Ochoa s/n, E-18071 Granada, Spain
| | - Susana Rubiño
- Department of Microbiology, Faculty of Sciences, Avda Fuentenueva s/n, University of Granada, 18071 Granada, Spain
| | - María Garrido-Barros
- CIBER-EHD, Department of Pharmacology. Centre for Biomedical Research (CIBM), Avda del Conocimiento s/n, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain
| | - Manuel Montalbán-López
- Department of Microbiology, Faculty of Sciences, Avda Fuentenueva s/n, University of Granada, 18071 Granada, Spain
| | - María José Rosales
- Department of Parasitology, Instituto de Investigación Biosanitaria (ibs.Granada), Hospitales Universitarios de Granada/University of Granada, Severo Ochoa s/n, E-18071 Granada, Spain
| | - Manuel Sánchez-Moreno
- Department of Parasitology, Instituto de Investigación Biosanitaria (ibs.Granada), Hospitales Universitarios de Granada/University of Granada, Severo Ochoa s/n, E-18071 Granada, Spain
| | - Eva Valdivia
- Department of Microbiology, Faculty of Sciences, Avda Fuentenueva s/n, University of Granada, 18071 Granada, Spain
| | - Manuel Martínez-Bueno
- Department of Microbiology, Faculty of Sciences, Avda Fuentenueva s/n, University of Granada, 18071 Granada, Spain
| | - Clotilde Marín
- Department of Parasitology, Instituto de Investigación Biosanitaria (ibs.Granada), Hospitales Universitarios de Granada/University of Granada, Severo Ochoa s/n, E-18071 Granada, Spain
| | - Julio Gálvez
- CIBER-EHD, Department of Pharmacology. Centre for Biomedical Research (CIBM), Avda del Conocimiento s/n, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain
| | - Mercedes Maqueda
- Department of Microbiology, Faculty of Sciences, Avda Fuentenueva s/n, University of Granada, 18071 Granada, Spain
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15
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Hols P, Ledesma-García L, Gabant P, Mignolet J. Mobilization of Microbiota Commensals and Their Bacteriocins for Therapeutics. Trends Microbiol 2019; 27:690-702. [PMID: 30987817 DOI: 10.1016/j.tim.2019.03.007] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 01/21/2023]
Abstract
With the specter of resurgence of pathogens due to the propagation of antibiotic-resistance genes, innovative antimicrobial strategies are needed. In this review, we summarize the beneficial aspects of bacteriocins, a set of miscellaneous peptide-based bacterium killers, compared with classical antibiotics, and emphasize their use in cocktails to curb the emergence of new resistance. We highlight that their prey spectrum, their molecular malleability, and their multiple modes of production might lead to specific and personalized treatments to prevent systemic disorders. Complementarily, we discuss how we might exploit prevailing bacterial commensals, such as Streptococcus salivarius, and deliberately mobilize their bacteriocin arsenal 'on site' to cure multiresistant infections or finely reshape the endogenous microbiota for prophylaxis purposes.
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Affiliation(s)
- Pascal Hols
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology (LIBST), UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Laura Ledesma-García
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology (LIBST), UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Philippe Gabant
- Syngulon, rue du Bois Saint-Jean 15/1, 4102, Seraing, Belgium
| | - Johann Mignolet
- Biochemistry and Genetics of Microorganisms (BGM), Louvain Institute of Biomolecular Science and Technology (LIBST), UCLouvain, 1348 Louvain-la-Neuve, Belgium; Syngulon, rue du Bois Saint-Jean 15/1, 4102, Seraing, Belgium.
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16
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Khalili S, Ebrahimzade E, Mohebali M, Shayan P, Mohammadi-Yeganeh S, Moosazadeh Moghaddam M, Elikaee S, Akhoundi B, Sharifi-Yazdi MK. Investigation of the antimicrobial activity of a short cationic peptide against promastigote and amastigote forms of Leishmania major (MHRO/IR/75/ER): An in vitro study. Exp Parasitol 2018; 196:48-54. [PMID: 30496731 DOI: 10.1016/j.exppara.2018.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 11/21/2018] [Accepted: 11/25/2018] [Indexed: 11/29/2022]
Abstract
Cutaneous leishmaniasis is one of the most endemic global health problems in many countries all around the world. Pentavalent antimonial drugs constitute the first line of leishmaniasis treatment; however, resistance to these drugs is a serious problem. Therefore, new therapies with new modes of action are urgently needed. In the current study, we examined antimicrobial activity of CM11 hybrid peptide (WKLFKKILKVL-NH2) against promastigote and amastigote forms of L. major (MHRO/IR/75/ER). In vitro anti-leishmanial activity was identified against L. major by parasite viability and metabolic activity after exposure to different peptide concentration. In the presentt study, we demostrated that different concentrations of CM11 result in dose dependent growth inhibition of Leishmania promastigotes. Furthermore, we demostrated that CM11 peptide has significant anti-leishmanial activities on amastigotes. Our results demonstrated that CM11 antimicrobial peptide may provide an alternative therapeutic approach for L. major treatment.
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Affiliation(s)
- Sara Khalili
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Elahe Ebrahimzade
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Mehdi Mohebali
- Department of Medical Science, School of Public Health, Tehran University of Medical Science, Tehran, Iran
| | - Parviz Shayan
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | | | | | - Samira Elikaee
- Department of Medical Science, School of Public Health, Tehran University of Medical Science, Tehran, Iran
| | - Behnaz Akhoundi
- Department of Medical Science, School of Public Health, Tehran University of Medical Science, Tehran, Iran
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17
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Baindara P, Korpole S, Grover V. Bacteriocins: perspective for the development of novel anticancer drugs. Appl Microbiol Biotechnol 2018; 102:10393-10408. [PMID: 30338356 DOI: 10.1007/s00253-018-9420-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/26/2018] [Accepted: 09/26/2018] [Indexed: 11/26/2022]
Abstract
Antimicrobial peptides (AMPs) from prokaryotic source also known as bacteriocins are ribosomally synthesized by bacteria belonging to different eubacterial taxonomic branches. Most of these AMPs are low molecular weight cationic membrane active peptides that disrupt membrane by forming pores in target cell membranes resulting in cell death. While these peptides known to exhibit broad-spectrum antimicrobial activity, including antibacterial and antifungal, they displayed minimal cytotoxicity to the host cells. Their antimicrobial efficacy has been demonstrated in vivo using diverse animal infection models. Therefore, we have discussed some of the promising peptides for their ability towards potential therapeutic applications. Further, some of these bacteriocins have also been reported to exhibit significant biological activity against various types of cancer cells in different experimental studies. In fact, differential cytotoxicity towards cancer cells as compared to normal cells by certain bacteriocins directs for a much focused research to utilize these compounds as novel therapeutic agents. In this review, bacteriocins that demonstrated antitumor activity against diverse cancer cell lines have been discussed emphasizing their biochemical features, selectivity against extra targets and molecular mechanisms of action.
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Affiliation(s)
- Piyush Baindara
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, India
| | - Suresh Korpole
- MTCC and Gene Bank, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, India
| | - Vishakha Grover
- Dr. HS Judge Dental Institute and Hospital, Punjab University, Sector 25, Chandigarh, 160014, India.
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18
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Dicks LMT, Dreyer L, Smith C, van Staden AD. A Review: The Fate of Bacteriocins in the Human Gastro-Intestinal Tract: Do They Cross the Gut-Blood Barrier? Front Microbiol 2018; 9:2297. [PMID: 30323796 PMCID: PMC6173059 DOI: 10.3389/fmicb.2018.02297] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/07/2018] [Indexed: 12/20/2022] Open
Abstract
The intestinal barrier, consisting of the vascular endothelium, epithelial cell lining, and mucus layer, covers a surface of about 400 m2. The integrity of the gut wall is sustained by transcellular proteins forming tight junctions between the epithelial cells. Protected by three layers of mucin, the gut wall forms a non-permeable barrier, keeping digestive enzymes and microorganisms within the luminal space, separate from the blood stream. Microorganisms colonizing the gut may produce bacteriocins in an attempt to outcompete pathogens. Production of bacteriocins in a harsh and complex environment such as the gastro-intestinal tract (GIT) may be below minimal inhibitory concentration (MIC) levels. At such low levels, the stability of bacteriocins may be compromised. Despite this, most bacteria in the gut have the ability to produce bacteriocins, distributed throughout the GIT. With most antimicrobial studies being performed in vitro, we know little about the migration of bacteriocins across epithelial barriers. The behavior of bacteriocins in the GIT is studied ex vivo, using models, flow cells, or membranes resembling the gut wall. Furthermore, little is known about the effect bacteriocins have on the immune system. It is generally believed that the peptides will be destroyed by macrophages once they cross the gut wall. Studies done on the survival of neurotherapeutic peptides and their crossing of the brain-blood barrier, along with other studies on small peptides intravenously injected, may provide some answers. In this review, the stability of bacteriocins in the GIT, their effect on gut epithelial cells, and their ability to cross epithelial cells are discussed. These are important questions to address in the light of recent papers advocating the use of bacteriocins as possible alternatives to, or used in combination with, antibiotics.
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Affiliation(s)
- Leon M. T. Dicks
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
| | - Leané Dreyer
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
| | - Carine Smith
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Anton D. van Staden
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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19
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Todorov SD, Perin LM, Carneiro BM, Rahal P, Holzapfel W, Nero LA. Safety of Lactobacillus plantarum ST8Sh and Its Bacteriocin. Probiotics Antimicrob Proteins 2018; 9:334-344. [PMID: 28233282 DOI: 10.1007/s12602-017-9260-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Total DNA extracted from Lb. plantarum ST8Sh was screened for the presence of more than 50 genes related to production of biogenic amines (histidine decarboxylase, tyrosine decarboxylase, and ornithine decarboxylase), virulence factors (sex pheromones, gelatinase, cytolysin, hyaluronidase, aggregation substance, enterococcal surface protein, endocarditis antigen, adhesion of collagen, integration factors), and antibiotic resistance (vancomycin, tetracycline, erythromycin, gentamicin, chloramphenicol, bacitracin). Lb. plantarum ST8Sh showed a low presence of virulence genes. Only 13 genes were detected (related to sex pheromones, aggregation substance, adhesion of collagen, tetracycline, gentamicin, chloramphenicol, erythromycin, but not to vancomycin, and bacitracin) and may be considered as indication of safety for application in fermented food products. In addition, interaction between Lb. plantarum ST8Sh and drugs from different groups were determined in order to establish possible application of the strain in combination with commercial drugs. Cytotoxicity of the semi-purified bacteriocins produced by Lb. plantarum ST8Sh was depended on applied concentration-highly cytotoxic when applied at 25 μg/mL and no cytotoxicity at 5 μg/mL.
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Affiliation(s)
- Svetoslav Dimitrov Todorov
- Veterinary Department, Universidade Federal de Viçosa, Campus UFV, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Luana M Perin
- Veterinary Department, Universidade Federal de Viçosa, Campus UFV, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Bruno M Carneiro
- Departamento de Engenharia e Tecnologia de Alimentos, UNESP - Universidade Estadual Paulista, Instituto de Biociências, Letras e Ciências Exatas, São José do Rio Preto, SP, Brazil
- Instituto de Ciências Exatas e Naturais, Universidade Federal de Mato Grosso, Rondonópolis, MT, Brazil
| | - Paula Rahal
- Departamento de Engenharia e Tecnologia de Alimentos, UNESP - Universidade Estadual Paulista, Instituto de Biociências, Letras e Ciências Exatas, São José do Rio Preto, SP, Brazil
| | | | - Luís Augusto Nero
- Veterinary Department, Universidade Federal de Viçosa, Campus UFV, Viçosa, Minas Gerais, 36570-900, Brazil
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20
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Sun Y, Heidary DK, Zhang Z, Richards CI, Glazer EC. Bacterial Cytological Profiling Reveals the Mechanism of Action of Anticancer Metal Complexes. Mol Pharm 2018; 15:3404-3416. [PMID: 29865789 PMCID: PMC6083414 DOI: 10.1021/acs.molpharmaceut.8b00407] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
![]()
Target
identification and mechanistic studies of cytotoxic agents
are challenging processes that are both time-consuming and costly.
Here we describe an approach to mechanism of action studies for potential
anticancer compounds by utilizing the simple prokaryotic system, E. coli, and we demonstrate its utility with the characterization
of a ruthenium polypyridyl complex [Ru(bpy)2dmbpy2+]. Expression of the photoconvertible fluorescent protein Dendra2
facilitated both high throughput studies and single-cell imaging.
This allowed for simultaneous ratiometric analysis of inhibition of
protein production and phenotypic investigations. The profile of protein
production, filament size and population, and nucleoid morphology
revealed important differences between inorganic agents that damage
DNA vs more selective inhibitors of transcription and translation.
Trace metal analysis demonstrated that DNA is the preferred nucleic
acid target of the ruthenium complex, but further studies in human
cancer cells revealed altered cell signaling pathways compared to
the commonly administrated anticancer agent cisplatin. This study
demonstrates E. coli can be used to rapidly distinguish
between compounds with disparate mechanisms of action and also for
more subtle distinctions within in studies in mammalian cells.
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Affiliation(s)
- Yang Sun
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - David K Heidary
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Zhihui Zhang
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Christopher I Richards
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Edith C Glazer
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
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21
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Kim HY, Jang JE, Ahn DR. Dimeric Human β-Defensin 3 as a Universal Platform for Intracellular Delivery of Nucleic Acid Cargos. ACS APPLIED BIO MATERIALS 2018. [DOI: 10.1021/acsabm.8b00024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Giongo JL, de Almeida Vaucher R, Sagrillo MR, Vianna Santos RC, Duarte MM, Rech VC, Soares Lopes LQ, Beatriz da Cruz I, Tatsch E, Moresco RN, Gomes P, Luchese C, Steppe M. Anti-inflammatory effect of geranium nanoemulsion macrophages induced with soluble protein of Candida albicans. Microb Pathog 2017; 110:694-702. [DOI: 10.1016/j.micpath.2017.01.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/02/2017] [Accepted: 01/03/2017] [Indexed: 11/24/2022]
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Kaisersberger Vincek M, Mor A, Gorgieva S, Kokol V. Antibacterial activity and cytotoxycity of gelatine-conjugated lysine-based peptides. J Biomed Mater Res A 2017; 105:3110-3126. [PMID: 28771959 DOI: 10.1002/jbm.a.36164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/30/2017] [Accepted: 07/28/2017] [Indexed: 12/21/2022]
Abstract
The effect of the coupling approach (chemical by using carbodiimide chemistry, and enzymatic by using transglutaminase) of a hydrophilic ɛ-poly-L-lysine (ɛPL) and a structurally-hydrophobic oligo-acyl-lysyl (OAK) to a gelatine (GEL) macromolecule, and their antibacterial activity against Gram-negative E. coli and Gram-positive S. aureus bacteria, as well as cytotoxicity to human osteoblast cells was studied as potential macromolecules for biomedical applications. Different spectroscopic (ultraviolet-visible, infrared, fluorescence, and electron paramagnetic resonance) and separation (size-exclusion chromatography and capillary zone electrophoresis) techniques, as well as zeta-potential analysis were performed to confirm the ɛPL/OAK covalent coupling and to determine their amount and orientation of the immobilization. The highest and kinetically the fastest reduction of bacteria (≥77% against E. coli vs. ≥82% against S. aureus) was achieved with GEL functionalized with ɛPL/OAK by the chemical grafting-to approach being correlated with conformationally the highly-flexible ˝brush-like˝ orientation linkage of peptides, enable its targeted and rapid interactions with bacteria membrane. The up to 400-fold lower yield of OAKs being immobilized may be related also to its cationic charge and hydrophobic alkyl chain moieties, compared to more hydrophilic ɛPL easily causing random polymerization and self-conjugation. The ɛPL/OAK-functionalized GEL did not induce citotoxicity to osteoblasts, even at ∼25-fold higher concentration than bacterial minimum inhibitory (MIC) concentration of ɛPL/OAK. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 3110-3126, 2017.
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Affiliation(s)
- Maja Kaisersberger Vincek
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, Maribor, Slovenia
| | - Amram Mor
- Department of Biotechnology & Food Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Selestina Gorgieva
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, Maribor, Slovenia
| | - Vanja Kokol
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Design, University of Maribor, Maribor, Slovenia
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24
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Perumal V, Repally A, Dasari A, Venkatesan A. Partial purification and characterization of bacteriocin produced by Enterococcus faecalis DU10 and its probiotic attributes. Prep Biochem Biotechnol 2016; 46:686-94. [DOI: 10.1080/10826068.2015.1135451] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Venkatesh Perumal
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ayyanna Repally
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ankaiah Dasari
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Arul Venkatesan
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
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25
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Muciño G, Castro-Obregón S, Hernandez-Pando R, Del Rio G. Autophagy as a target for therapeutic uses of multifunctional peptides. IUBMB Life 2016; 68:259-67. [PMID: 26968336 DOI: 10.1002/iub.1483] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/17/2016] [Indexed: 12/21/2022]
Abstract
The emergence of complex diseases is promoting a change from one-target to multitarget drugs and peptides are ideal molecules to fulfill this polypharmacologic role. Here we review current status in the design of polypharmacological peptides aimed to treat complex diseases, focusing on tuberculosis. In this sense, combining multiple activities in single molecules is a two-sided sword, as both positive and negative side effects might arise. These polypharmacologic compounds may be directed to regulate autophagy, a catabolic process that enables cells to eliminate intracellular microbes (xenophagy), such as Mycobacterium tuberculosis (MBT). Here we review some strategies to control MBT infection and propose that a peptide combining both antimicrobial and pro-autophagic activities would have a greater potential to limit MBT infection. This endeavor may complement the knowledge gained in understanding the mechanism of action of antibiotics and may lead to the design of better polypharmacological peptides to treat complex diseases such as tuberculosis.
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Affiliation(s)
- Gabriel Muciño
- Department of Neurodevelopment and Physiology, Instituto De Fisiología Celular, UNAM, México, D.F, México
| | - Susana Castro-Obregón
- Department of Neurodevelopment and Physiology, Instituto De Fisiología Celular, UNAM, México, D.F, México
| | - Rogelio Hernandez-Pando
- Experimental Pathology Section, Department of Pathology, National Institute of Medical Sciences and Nutrition "Salvador Zubirán,", Mexico
| | - Gabriel Del Rio
- Department of Biochemistry and Structural Biology, Instituto De Fisiología Celular, UNAM, México, D.F, México
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26
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The development of antimicrobial peptides as an approach to prevention of antibiotic resistance. ACTA ACUST UNITED AC 2015. [DOI: 10.1097/mrm.0000000000000032] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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27
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Baranoski A, Tempesta Oliveira M, Semprebon SC, Niwa AM, Ribeiro LR, Mantovani MS. Effects of sulfated and non-sulfated β-glucan extracted from Agaricus brasiliensis in breast adenocarcinoma cells – MCF-7. Toxicol Mech Methods 2015; 25:672-9. [DOI: 10.3109/15376516.2015.1043762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Adrivanio Baranoski
- Department of General Biology, State University of Londrina, Londrina, Brazil and
| | | | | | - Andressa Megumi Niwa
- Department of General Biology, State University of Londrina, Londrina, Brazil and
| | - Lúcia Regina Ribeiro
- Department of Pathology, São Paulo State University “Júlio de Mesquita Filho”, São Paulo, Brazil
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28
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Vertical ordering sensitivity of solid supported DPPC membrane to alamethicin and the related loss of cell viability. Biochim Biophys Acta Gen Subj 2015; 1850:759-68. [PMID: 25597953 DOI: 10.1016/j.bbagen.2015.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 12/23/2014] [Accepted: 01/08/2015] [Indexed: 11/23/2022]
Abstract
BACKGROUND Experimental studies of antimicrobial peptides interacting with lipid membranes recently attracted growing interest due to their numerous biomedical applications. However, the influence of such peptides on the structural organisation of lipid membranes in connection with the actual cell response still remains an elusive issue. METHODS X-ray diffraction was employed on detecting the sensitivity of the periodical spacing of dipalmitoyl-phosphatidyl-choline stacked as solid-supported bilayers to the presence of varying amounts of the peptide alamethicin in a wide range of peptide-to-lipid molar ratios. These results were then correlated with the effects of alamethicin on biological membranes in vitro as observed by optical microscopy and microculture tetrazolium assay on the tumour cells HeLa to provide a comprehensive and quantitative analysis of these effects, based on a dose-response relationship. RESULTS The experiments allowed correlating the periodical spacing and the peptide-to-lipid molar ratio on alamethicin-dipalmitoyl-phosphatidyl-choline samples. Two different trends of periodical spacing vs. peptide-to-lipid molar ratio clearly appeared at low and high hydration levels, showing intriguing non-linear profiles. Unexpected correspondences were observed between the peptide-to-lipid molar ratio range where the changes in dipalmitoyl-phosphatidyl-choline structure occur and the alamethicin doses which alter the viability and the plasma membrane morphology of HeLa. CONCLUSIONS Alamethicin might induce either mechanical or phase changes on dipalmitoyl-phosphatidyl-choline bilayers. Such easily accessible ordering information was well-calibrated to predict the alamethicin doses necessary to trigger cell death through plasma membrane alterations. GENERAL SIGNIFICANCE This benchmark combined study may be valuable to predict bioeffects of several antimicrobial peptides of biomedical relevance.
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Meng S, Xu Z, Hong G, Zhao L, Zhao Z, Guo J, Ji H, Liu T. Synthesis, characterization and in vitro photodynamic antimicrobial activity of basic amino acid-porphyrin conjugates. Eur J Med Chem 2014; 92:35-48. [PMID: 25544685 DOI: 10.1016/j.ejmech.2014.12.029] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 11/25/2014] [Accepted: 12/18/2014] [Indexed: 12/13/2022]
Abstract
Photodynamic antimicrobial chemotherapy (PACT), as a novel and effective modality for the treatment of infection with the advantage of circumventing multidrug resistance, receives great attention in recent years. The photosensitizer is the crucial element in PACT, and cationic porphyrins have been demonstrated to usually be more efficient than neutral and negatively charged analogues towards bacteria in PACT. In this work, three native basic amino acids, l-lysine, l-histidine and l-arginine, were conjugated with amino porphyrins as cationic auxiliary groups, and 13 target compounds were synthesized. This paper reports their syntheses, structural characterizations, oil-water partition coefficients, singlet oxygen generation yields, photo-stability, as well as their photo inactivation efficacies against methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli and Pseudomonas aeruginosa in vitro. The preliminary structure-activity relationship was discussed. Compound 4i, with porphyrin bearing four lysine moieties, displays the highest photo inactivation efficacy against the tested bacterial strains at 3.91 μM with a low light dose (6 J/cm(2)), and it is stable in serum and lower cytotoxicity to A929 cells. These basic amino acid-porphyrin conjugates are potential photosensitizers for PACT.
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Affiliation(s)
- Shuai Meng
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Zengping Xu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Ge Hong
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Lihui Zhao
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Zhanjuan Zhao
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Jianghong Guo
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Haiying Ji
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China
| | - Tianjun Liu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin 300192, China.
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Silva DSE, de Castro CC, Silva FDSE, Sant’anna V, Vargas GD, de Lima M, Fischer G, Brandelli A, da Motta ADS, Hübner SDO. Antiviral activity of a Bacillus sp. P34 peptide against pathogenic viruses of domestic animals. Braz J Microbiol 2014; 45:1089-94. [PMID: 25477947 PMCID: PMC4204951 DOI: 10.1590/s1517-83822014000300043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 03/14/2014] [Indexed: 11/28/2022] Open
Abstract
P34 is an antimicrobial peptide produced by a Bacillus sp. strain isolated from the intestinal contents of a fish in the Brazilian Amazon basin with reported antibacterial activity. The aim of this work was to evaluate the peptide P34 for its in vitro antiviral properties against canine adenovirus type 2 (CAV-2), canine coronavirus (CCoV), canine distemper virus (CDV), canine parvovirus type 2 (CPV-2), equine arteritis virus (EAV), equine influenza virus (EIV), feline calicivirus (FCV) and feline herpesvirus type 1 (FHV-1). The results showed that the peptide P34 exhibited antiviral activity against EAV and FHV-1. The peptide P34 inhibited the replication of EAV by 99.9% and FHV-1 by 94.4%. Virucidal activity was detected only against EAV. When P34 and EAV were incubated for 6 h at 37 °C the viral titer reduced from 10(4.5) TCID50 to 10(2.75) TCID50, showing a percent of inhibition of 98.6%. In conclusion, our results demonstrated that P34 inhibited EAV and FHV-1 replication in infected cell cultures and it showed virucidal activity against EAV. Since there is documented resistance to the current drugs used against herpesviruses and there is no treatment for equine viral arteritis, it is advisable to search for new antiviral compounds to overcome these infections.
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Affiliation(s)
- Débora Scopel e Silva
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Clarissa Caetano de Castro
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Fábio da Silva e Silva
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Voltaire Sant’anna
- Departamento de Ciência e Tecnologia de AlimentosUniversidade Estadual do Rio Grande do SulEncantadoRSBrazilDepartamento de Ciência e Tecnologia de Alimentos, Universidade Estadual do Rio Grande do Sul, Encantado, RS, Brazil.
| | - Gilberto D’Avila Vargas
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Marcelo de Lima
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Geferson Fischer
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
| | - Adriano Brandelli
- Laboratório de Bioquímica e Microbiologia AplicadaDepartamento de Ciência de AlimentosInstituto de Ciência e Tecnologia de AlimentosUniversidade Federal do Rio Grande do SulPorto AlegreRSBrazilLaboratório de Bioquímica e Microbiologia Aplicada, Departamento de Ciência de Alimentos, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Amanda de Souza da Motta
- Instituto de Ciências Básicas da SaúdeDepartamento de MicrobiologiaUniversidade Federal do Rio Grande do SulPorto AlegreRSBrazilInstituto de Ciências Básicas da Saúde, Departamento de Microbiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Silvia de Oliveira Hübner
- Laboratório de Virologia e Imunologia AnimalFaculdade de VeterináriaUniversidade Federal de PelotasPelotasRSBrazilLaboratório de Virologia e Imunologia Animal, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
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31
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Tong Z, Ni L, Ling J. Antibacterial peptide nisin: a potential role in the inhibition of oral pathogenic bacteria. Peptides 2014; 60:32-40. [PMID: 25088158 DOI: 10.1016/j.peptides.2014.07.020] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/20/2014] [Accepted: 07/21/2014] [Indexed: 02/06/2023]
Abstract
Although the antimicrobial peptide nisin has been extensively studied in the food industry for decades, its application in the oral cavity remains to develop and evaluate its feasibility in treating oral common diseases. Nisin is an odorless, colorless, tasteless substance with low toxicity and with antibacterial activities against Gram-positive bacteria. These biologic properties may establish its use in promising products for oral diseases. This article summarizes the antibacterial efficiency of nisin against pathogenic bacteria related to dental caries and root canal infection and discusses the combination of nisin and common oral drugs.
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Affiliation(s)
- Zhongchun Tong
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Longxing Ni
- Department of Conservative Dentistry & Endodontics, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Junqi Ling
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
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32
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Lohan S, Cameotra SS, Bisht GS. Antibacterial evaluation of structurally amphipathic, membrane active small cationic peptidomimetics: Synthesized by incorporating 3-amino benzoic acid as peptidomimetic element. Eur J Med Chem 2014; 83:102-15. [DOI: 10.1016/j.ejmech.2014.06.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 06/06/2014] [Accepted: 06/12/2014] [Indexed: 10/25/2022]
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33
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Mojica Pisciotti ML, Lima E, Vasquez Mansilla M, Tognoli VE, Troiani HE, Pasa AA, Creczynski-Pasa TB, Silva AH, Gurman P, Colombo L, Goya GF, Lamagna A, Zysler RD. In vitro and in vivo experiments with iron oxide nanoparticles functionalized with DEXTRAN or polyethylene glycol for medical applications: magnetic targeting. J Biomed Mater Res B Appl Biomater 2014; 102:860-8. [PMID: 24458920 DOI: 10.1002/jbm.b.33068] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 09/13/2013] [Accepted: 10/20/2013] [Indexed: 01/30/2023]
Abstract
In this research work, DEXTRAN- and polyethylene glycol (PEG)-coated iron-oxide superparamagnetic nanoparticles were synthetized and their cytotoxicity and biodistribution assessed. Well-crystalline hydrophobic Fe3 O4 SPIONs were formed by a thermal decomposition process with d = 18 nm and σ = 2 nm; finally, the character of SPIONs was changed to hydrophilic by a post-synthesis procedure with the functionalization of the SPIONs with PEG or DEXTRAN. The nanoparticles present high saturation magnetization and superparamagnetic behavior at room temperature, and the hydrodynamic diameters of DEXTRAN- and PEG-coated SPIONs were measured as 170 and 120 nm, respectively. PEG- and DEXTRAN-coated SPIONs have a Specific Power Absorption SPA of 320 and 400 W/g, respectively, in an ac magnetic field with amplitude of 13 kA/m and frequency of 256 kHz. In vitro studies using VERO and MDCK cell lineages were performed to study the cytotoxicity and cell uptake of the SPIONs. For both cell lineages, PEG- and DEXTRAN-coated nanoparticles presented high cell viability for concentrations as high as 200 μg/mL. In vivo studies were conducted using BALB/c mice inoculating the SPIONs intravenously and exposing them to the presence of an external magnet located over the tumour. It was observed that the amount of PEG-coated SPIONs in the tumor increased by up to 160% when using the external permanent magnetic as opposed to those animals that were not exposed to the external magnetic field.
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Affiliation(s)
- M L Mojica Pisciotti
- Div. Resonancias Magnéticas, Centro Atómico Bariloche/CONICET, S. C. Bariloche, 8400, Argentina
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34
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Investigation of the antibacterial activity of a short cationic peptide against multidrug-resistant Klebsiella pneumoniae and Salmonella typhimurium strains and its cytotoxicity on eukaryotic cells. World J Microbiol Biotechnol 2013; 30:1533-40. [DOI: 10.1007/s11274-013-1575-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/02/2013] [Indexed: 12/14/2022]
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35
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Bosch-Marcé M, Mohan KV, Gelderman MP, Ryan PL, Russek-Cohen E, Atreya CD. Preclinical safety evaluation of human platelets treated with antimicrobial peptides in severe combined immunodeficient mice. Transfusion 2013; 54:569-76. [DOI: 10.1111/trf.12318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/08/2013] [Accepted: 05/13/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Marta Bosch-Marcé
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
| | - Ketha V.K. Mohan
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
| | - Monique P. Gelderman
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
| | - Patricia L. Ryan
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
| | - Estelle Russek-Cohen
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
| | - Chintamani D. Atreya
- Section of Cell Biology, Laboratory of Cellular Hematology, Division of Hematology; Food and Drug Administration; Bethesda Maryland
- Division of Biostatistics, Center for Biologics Evaluation and Research; Food and Drug Administration; Bethesda Maryland
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36
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Deriving TC50 values of nanoparticles from electrochemical monitoring of lactate dehydrogenase activity indirectly. Methods Mol Biol 2013. [PMID: 22975960 DOI: 10.1007/978-1-62703-002-1_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Nanotoxicity assessment methods for nanoparticles (NPs) such as carbon nanotubes (CNTs), nano-Al(2)O(3), and tridecameric aluminum polycation or nanopolynuclear (nano-Al(13)), particularly lactate dehydrogenase (LDH) assays are reviewed. Our researches on electrochemically monitoring the variations of LDH activity indirectly in the presence of multiwalled carbon nanotubes (MWCNTs), nano-Al(13), and nano-Al(2)O(3) separately to derive toxic concentrations of NPs altering LDH activity by 50% (TC(50)) values are discussed. TC(50) values indicated that the toxicity order was Al (III)> MWCNTs > nano-Al(13) > nano-Al(2)O(3). Zeta potentials (ζ) data of these NPs in the literature proved that the surfaces of these NPs are charged negatively. Negatively charged surfaces might be a main cause in the reduction of LDH activity. Therefore, the classic LDH assays are doubtful to underestimate the nanotoxicities when they are applied to those NPs with negatively charged surfaces. These observations highlight and reconcile some contradictory results at present such as medium-dependent toxicity of NPs among the literature and develop novel analytical methods for evaluation of toxicities of NPs.
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37
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Paiva AD, de Oliveira MD, de Paula SO, Baracat-Pereira MC, Breukink E, Mantovani HC. Toxicity of bovicin HC5 against mammalian cell lines and the role of cholesterol in bacteriocin activity. MICROBIOLOGY-SGM 2012; 158:2851-2858. [PMID: 22956757 DOI: 10.1099/mic.0.062190-0] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bacteriocins are ribosomally synthesized antimicrobial peptides produced by Bacteria and some Archaea. The assessment of the toxic potential of antimicrobial peptides is important in order to apply these peptides on an industrial scale. The aim of the present study was to investigate the in vitro cytotoxic and haemolytic potential of bovicin HC5, as well as to determine whether cholesterol influences bacteriocin activity on model membranes. Nisin, for which the mechanism of action is well described, was used as a reference peptide in our assays. The viability of three distinct eukaryotic cell lines treated with bovicin HC5 or nisin was analysed by using the MTT assay and cellular morphological changes were determined by light microscopy. The haemolytic potential was evaluated by using the haemoglobin liberation assay and the role of cholesterol on bacteriocin activity was examined by using model membranes composed of DOPC (1,2-dioleoyl-sn-glycero-3-phosphocholine) and DPoPC (1,2-dipalmitoyl-sn-glycero-3-phosphocholine). The IC(50) of bovicin HC5 and nisin against Vero cells was 65.42 and 13.48 µM, respectively. When the MTT assay was performed with MCF-7 and HepG2 cells, the IC(50) obtained for bovicin HC5 was 279.39 and 289.30 µM, respectively, while for nisin these values were 105.46 and 112.25 µM. The haemolytic activity of bovicin HC5 against eukaryotic cells was always lower than that determined for nisin. The presence of cholesterol did not influence the activity of either bacteriocin on DOPC model membranes, but nisin showed reduced carboxyfluorescein leakage in DPoPC membranes containing cholesterol. In conclusion, bovicin HC5 only exerted cytotoxic effects at concentrations that were greater than the concentration needed for its biological activity, and the presence of cholesterol did not affect its interaction with model membranes.
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Affiliation(s)
- Aline Dias Paiva
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | - Eefjan Breukink
- Department Biochemistry of Membranes, Utrecht University, Utrecht, The Netherlands
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38
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Silva AH, Filippin-Monteiro FB, Mattei B, Zanetti-Ramos BG, Creczynski-Pasa TB. In vitro biocompatibility of solid lipid nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 432:382-388. [PMID: 22750185 DOI: 10.1016/j.scitotenv.2012.06.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 06/01/2012] [Accepted: 06/06/2012] [Indexed: 06/01/2023]
Abstract
This study was undertaken to address the current deficient knowledge of cellular response to solid lipid nanoparticles (SLNs) exposure. We investigated the cytotoxicity of several SLNs formulations in two fibroblast cell lineages, Vero and MDCK. Several methods were used to explore the mechanisms involved in this cytotoxic process, including cell viability assays, flow cytometry and ROS generation assessment. Among nanoparticles tested, two of them (F4 and F5) demonstrated more cytotoxic effects in both cell lineages. The cell viability assays suggested that F4 and F5 interfere in cell mitochondrial metabolism and in lysosomal activity. In addition, F5 decreased the percentage of MDCK cells in G0/G1 and G2/M phases, with a marked increase in the Sub/G1 population, suggesting DNA fragmentation. Regarding F4, although IC(50) was higher (~700 μg/mL), this formulation affected mitochondrial membrane potential for Vero cells. However, the IC(50) of F5 was around 250 μg/mL, suggesting the effect of SDS (sodium dodecyl sulfate) present in the formulation. In summary, the nanoparticles tested here appears to be biocompatible, with the exception of F5. Further studies are required to elucidate the in vivo effects of these nanoscale structures, in order to evaluate or predict the connotation of their increased and widespread use.
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Affiliation(s)
- Adny Henrique Silva
- Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina P.O. Box 476, Florianópolis, SC, 88040-900, Brazil
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39
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Discovery of ferrocene-carborane derivatives as novel chemical antimicrobial agents against multidrug-resistant bacteria. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4621-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Eckert R. Road to clinical efficacy: challenges and novel strategies for antimicrobial peptide development. Future Microbiol 2011; 6:635-51. [PMID: 21707311 DOI: 10.2217/fmb.11.27] [Citation(s) in RCA: 146] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Since the discovery of magainins, cecropins and defensins 30 years ago, antimicrobial peptides (AMPs) have been hailed as a potential solution to the dearth of novel antibiotic development. AMPs have shown robust activity against a wide variety of pathogens, including drug-resistant bacteria. Unlike small-molecule antibiotics, however, AMPs have failed to translate this success to the clinic. Only the polymyxins, gramicidins, nisin and daptomycin are currently approved for medical use; the latter is the only example to have been developed in the last several decades. Nonetheless, researchers continue to isolate, modify and develop novel AMPs for therapeutic applications. Efforts have focused on increasing stability, reducing cytotoxicity, improving antimicrobial activity and incorporating AMPs in novel formulations, including nanoscale particles. As peptide synthesis and recombinant production methodologies improve, and more relevant bioassays become available, it becomes increasingly likely that AMPs will break the regulatory barrier and enter the marketplace as valuable antimicrobial weapons in the next 10 years.
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Affiliation(s)
- Randal Eckert
- C3 Jian, Inc., 423 Hindry Ave, Unit D, Inglewood, CA 90301, USA.
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41
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Vaucher RDA, Velho Gewehr CDCV, Correa APF, Sant'Anna V, Ferreira J, Brandelli A. Evaluation of the immunogenicity and in vivo toxicity of the antimicrobial peptide P34. Int J Pharm 2011; 421:94-8. [PMID: 21963470 DOI: 10.1016/j.ijpharm.2011.09.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/22/2011] [Accepted: 09/19/2011] [Indexed: 11/15/2022]
Abstract
Immunogenicity and toxicity of antimicrobial peptide P34 were evaluated in vivo. BALB/c mice were inoculated intraperitoneally with peptide P34 alone and associated with Freund's adjuvant. For acute toxicity testing, different concentrations of the peptide P34 (82.5, 165.0, 247.5 and 330.0mg/kg) were orally administered. To evaluate the sub-chronic toxicity the tested dose of 0.825 mg/kg/day of the peptide P34 or nisin were administered for 21 days. There were no hypersensitivity reactions or significant increase in antibody titer during the immunogenicity experiment or death of animals during the acute or sub-chronic toxicity tests. The LD(50) was higher than 332.3 ± 0.76 mg/kg. No significant changes in serum biochemical parameters were observed in the animals treated with the peptide P34 unlike nisin-treated group showed a significant increase in alanine transaminase levels in comparison to controls. The group treated with 0.825 mg/kg/day of nisin showed histological changes in the spleen, skin and liver. In the group treated with peptide P34 histological changes in the spleen were observed, with the presence of megakaryocytes. Few studies report the use of animal models to evaluate the in vivo toxicity of antimicrobial peptides and such investigation is an essential step to ensure it safe use in foods.
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Affiliation(s)
- Rodrigo de Almeida Vaucher
- Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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42
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Sullivan R, Santarpia P, Lavender S, Gittins E, Liu Z, Anderson MH, He J, Shi W, Eckert R. Clinical efficacy of a specifically targeted antimicrobial peptide mouth rinse: targeted elimination of Streptococcus mutans and prevention of demineralization. Caries Res 2011; 45:415-28. [PMID: 21860239 DOI: 10.1159/000330510] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 06/08/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Streptococcus mutans, the major etiological agent of dental caries, has a measurable impact on domestic and global health care costs. Though persistent in the oral cavity despite conventional oral hygiene, S. mutans can be excluded from intact oral biofilms through competitive exclusion by other microorganisms. This suggests that therapies capable of selectively eliminating S. mutans while limiting the damage to the normal oral flora might be effective long-term interventions to fight cariogenesis. To meet this challenge, we designed C16G2, a novel synthetic specifically targeted antimicrobial peptide with specificity for S. mutans. C16G2 consists of a S. mutans-selective 'targeting region' comprised of a fragment from S. mutans competence stimulation peptide (CSP) conjoined to a 'killing region' consisting of a broad-spectrum antimicrobial peptide (G2). In vitro studies have indicated that C16G2 has robust efficacy and selectivity for S. mutans, and not other oral bacteria, and affects targeted bacteria within seconds of contact. METHODS In the present study, we evaluated C16G2 for clinical utility in vitro, followed by a pilot efficacy study to examine the impact of a 0.04% (w/v) C16G2 rinse in an intra-oral remineralization/demineralization model. RESULTS AND CONCLUSIONS C16G2 rinse usage was associated with reductions in plaque and salivary S. mutans, lactic acid production, and enamel demineralization. The impact on total plaque bacteria was minimal. These results suggest that C16G2 is effective against S. mutans in vivo and should be evaluated further in the clinic.
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Affiliation(s)
- R Sullivan
- Colgate-Palmolive Technology Center, Piscataway, NJ, USA
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43
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Ruiz-Giménez P, Marcos JF, Torregrosa G, Lahoz A, Fernández-Musoles R, Valles S, Alborch E, Manzanares P, Salom JB. Novel antihypertensive hexa- and heptapeptides with ACE-inhibiting properties: from the in vitro ACE assay to the spontaneously hypertensive rat. Peptides 2011; 32:1431-8. [PMID: 21605609 DOI: 10.1016/j.peptides.2011.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 05/07/2011] [Accepted: 05/09/2011] [Indexed: 11/21/2022]
Abstract
Bioactive ACE inhibiting peptides are gaining interest in hypertension treatment. We have designed and screened six synthetic heptapeptides (PACEI48 to PACEI53) based on two hexapeptide leads (PACEI32 and PACEI34) to improve ACE inhibitory properties and assess their antihypertensive effects. ACE activity was assayed in vitro and ex vivo. Selected peptides were administered to spontaneously hypertensive rats (SHRs) and normotensive Wistar-Kyoto (WKY) rats. In vitro cytotoxicity was assessed with the MTT reduction test. The six heptapeptides at low micromolar concentration produced different degrees of in vitro inhibition of ACE activity using the synthetic substrate HHL or the natural substrate angiotensin I; and ex vivo inhibition of ACE-dependent, angiotensin I-induced vasoconstriction, but not angiotensin II-induced vasoconstriction. Oral administration of the hexapeptide PACEI32L, and the heptapeptides PACEI50L and PACEI52L, induced reductions in systolic blood pressure lasting up to 3h in SHRs but not in WKY rats. Intravenous injection of PACEI32L and PACEI50L, but not PACEI52L, induced acute transient reductions in mean blood pressure of SHRs. d-Amino acid peptides showed five-fold less ACE inhibitory potency, no inhibitory effect on angiotensin I-induced vasoconstriction, and antihypertensive effect in SHRs after i.v. injection, but not after oral administration. The toxicity of peptides to reduce the viability of cultured cells was in the millimolar range. In conclusion, we have obtained novel rationally designed heptapeptides with improved ACE inhibitory properties when compared to lead hexapeptides. One selected hexapeptide and two heptapeptides show oral antihypertensive effects in SHRs and appear safe in cytotoxicity assays.
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Affiliation(s)
- Pedro Ruiz-Giménez
- Departamento de Biotecnología de Alimentos, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain
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Growing insights into the safety of bacteriocins: the case of enterocin S37. Res Microbiol 2010; 162:159-63. [PMID: 21035542 DOI: 10.1016/j.resmic.2010.09.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2010] [Accepted: 09/14/2010] [Indexed: 11/20/2022]
Abstract
Very few studies have been reported on the cytotoxicity and impact of bacteriocins, and especially enterocins, upon eukaryotic cells. In order to gain more information on the safety of bacteriocins, we focused this study on enterocin S37, a bacteriocin produced by Enterococcus faecalis S37. We observed dose-dependent cytotoxicity toward undifferentiated Caco-2/TC7 cells. Moreover, no significant effect on differentiated monolayer Caco-2/TC7 and no apoptotic features were observed when cells were treated with 10 μg/ml of enterocin S37. The results obtained indicate possible safe use of enterocin S37 in the gastrointestinal tract of animals to prevent pathogen invasion and/or infection.
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Use of Byproducts of Food Industry for Production of Antimicrobial Activity by Bacillus sp. P11. FOOD BIOPROCESS TECH 2010. [DOI: 10.1007/s11947-010-0410-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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