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Singh BN, Singh BR, Gupta VK, Kharwar RN, Pecoraro L. Coating with Microbial Hydrophobins: A Novel Approach to Develop Smart Drug Nanoparticles. Trends Biotechnol 2018; 36:1103-1106. [DOI: 10.1016/j.tibtech.2018.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 12/11/2022]
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52
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Constantinescu-Aruxandei D, Frîncu RM, Capră L, Oancea F. Selenium Analysis and Speciation in Dietary Supplements Based on Next-Generation Selenium Ingredients. Nutrients 2018; 10:E1466. [PMID: 30304813 PMCID: PMC6213372 DOI: 10.3390/nu10101466] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/02/2018] [Accepted: 10/03/2018] [Indexed: 12/27/2022] Open
Abstract
Selenium is essential for humans and the deficit of Se requires supplementation. In addition to traditional forms such as Se salts, amino acids, or selenium-enriched yeast supplements, next-generation selenium supplements, with lower risk for excess supplementation, are emerging. These are based on selenium forms with lower toxicity, higher bioavailability, and controlled release, such as zerovalent selenium nanoparticles (SeNPs) and selenized polysaccharides (SPs). This article aims to focus on the existing analytical systems for the next-generation Se dietary supplement, providing, at the same time, an overview of the analytical methods available for the traditional forms. The next-generation dietary supplements are evaluated in comparison with the conventional/traditional ones, as well as the analysis and speciation methods that are suitable to reveal which Se forms and species are present in a dietary supplement. Knowledge gaps and further research potential in this field are highlighted. The review indicates that the methods of analysis of next-generation selenium supplements should include a step related to chemical species separation. Such a step would allow a proper characterization of the selenium forms/species, including molecular mass/dimension, and substantiates the marketing claims related to the main advantages of these new selenium ingredients.
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Affiliation(s)
- Diana Constantinescu-Aruxandei
- National Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, Romania.
| | - Rodica Mihaela Frîncu
- INCDCP-ICECHIM Calarasi Subsidiary, 7A Nicolae Titulescu St., 915300 Lehliu Gara, Romania.
| | - Luiza Capră
- National Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, Romania.
| | - Florin Oancea
- National Research & Development Institute for Chemistry and Petrochemistry ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, Romania.
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53
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Fructose furoic acid ester: An effective quorum sensing inhibitor against uropathogenic Escherichia coli. Bioorg Chem 2018; 79:310-318. [PMID: 29800818 DOI: 10.1016/j.bioorg.2018.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/05/2018] [Accepted: 05/14/2018] [Indexed: 12/12/2022]
Abstract
Uropathogenic Escherichia coli (UPEC) are the most common cause of UTI, accounting for more than 90% infections in the normal and unobstructed urinary tracts. Multi-drug resistance (MDR) is an emerging threat to the mankind and hence, there is an urge to develop alternative therapies. Targeting quorum sensing (QS), a cell-cell communication process regulates various biofilm and virulence factors would be a most promising alternate which curbs the pathogenesis without killing the bacteria, unlike antibiotics. SdiA, a quorum regulator is well-known to control the behavioural changes of UPEC in establishing biofilm and virulence. Therefore, we have hypothesized that the SdiA-selective inhibitors derived from the plant, Melia dubia using the molecular docking would be a remarkable therapeutic candidate to down regulate the UPEC biofilm and virulence phenotypes. In this study, we have designed, synthesized and characterized the fructose-furoic acid ester by NMR and ESI-MS. In vitro studies revealed that the QSI-MD selectively inhibits UPEC adherence and confocal laser scanning microscopy (CLSM) analysis showed the effectiveness of QSI-MD to inhibit the UPEC biofilm. Genetic studies using qRT-PCR revealed the down-regulation of quorum sensing regulated genes (fimA, csgA, espA). Based on the findings, we could propose that the QSI-MD could possibly act through SdiA and show target-specific inhibition of biofilm and virulence. It is notable that more than 70 bacterial species execute their communication through the SdiA homologues (LuxIR system). Hence, the QSI-MD could be further developed as a broad-spectrum anti-infective drug.
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Rémy B, Mion S, Plener L, Elias M, Chabrière E, Daudé D. Interference in Bacterial Quorum Sensing: A Biopharmaceutical Perspective. Front Pharmacol 2018; 9:203. [PMID: 29563876 PMCID: PMC5845960 DOI: 10.3389/fphar.2018.00203] [Citation(s) in RCA: 176] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 02/22/2018] [Indexed: 12/12/2022] Open
Abstract
Numerous bacteria utilize molecular communication systems referred to as quorum sensing (QS) to synchronize the expression of certain genes regulating, among other aspects, the expression of virulence factors and the synthesis of biofilm. To achieve this process, bacteria use signaling molecules, known as autoinducers (AIs), as chemical messengers to share information. Naturally occurring strategies that interfere with bacterial signaling have been extensively studied in recent years, examining their potential to control bacteria. To interfere with QS, bacteria use quorum sensing inhibitors (QSIs) to block the action of AIs and quorum quenching (QQ) enzymes to degrade signaling molecules. Recent studies have shown that these strategies are promising routes to decrease bacterial pathogenicity and decrease biofilms, potentially enhancing bacterial susceptibility to antimicrobial agents including antibiotics and bacteriophages. The efficacy of QSIs and QQ enzymes has been demonstrated in various animal models and are now considered in the development of new medical devices against bacterial infections, including dressings, and catheters for enlarging the therapeutic arsenal against bacteria.
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Affiliation(s)
- Benjamin Rémy
- IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille Université, Marseille, France
- Gene&GreenTK, Marseille, France
| | - Sonia Mion
- IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille Université, Marseille, France
| | | | - Mikael Elias
- Department of Biochemistry, Molecular Biology and Biophysics, Biotechnology Institute, University of Minnesota, St. Paul, MN, United States
| | - Eric Chabrière
- IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille Université, Marseille, France
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55
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Li N, Wang L, Yan H, Wang M, Shen D, Yin J, Shentu J. Effects of low-level engineered nanoparticles on the quorum sensing of Pseudomonas aeruginosa PAO1. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:7049-7058. [PMID: 29273994 DOI: 10.1007/s11356-017-0947-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/04/2017] [Indexed: 06/07/2023]
Abstract
The toxicity of engineered nanoparticles (ENPs) on bacteria has aroused much interest. However, few studies have focused on the effects of low-level ENPs on bacterial group behaviors that are regulated by quorum sensing (QS). Herein, we investigated the effects of nine ENPs (Ag, Fe, ZnO, TiO2, SiO2, Fe2O3, single-wall carbon nanotubes (SWCNTs), graphene oxide (GO), and C60) on QS in Pseudomonas aeruginosa PAOl. An ENP concentration of 100 μg L-1 did not impair bacterial growth. However, concentrations of 100 μg L-1 of Ag and GO ENPs induced significant increases in 3OC12-HSL in the culture and significantly promoted protease production and biofilm formation of PAO1. C4-HSL synthase and its transcription factors were less sensitive to 100 μg L-1 Ag and GO ENPs compared with 3OC12-HSL. Fe ENPs induced a significant increase in the 3OC12-HSL concentration, similar to Ag and GO ENPs. However, Fe ENPs did not induce any significant increase in protease production or biofilm formation. Different size distributions, chemical compositions, and aggregation states of the ENPs had different effects on bacterial QS. These whole circuit indicators could clarify the effects of ENPs on bacterial QS. This study furthers our understanding of the effects of low-level ENPs on bacterial social behaviors.
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Affiliation(s)
- Na Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, People's Republic of China
| | - Lijia Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
| | - Huicong Yan
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
| | - Meizhen Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China.
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, People's Republic of China.
| | - Dongsheng Shen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, People's Republic of China
| | - Jun Yin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, People's Republic of China
| | - Jiali Shentu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, People's Republic of China
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, People's Republic of China
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Shoeibi S, Mozdziak P, Golkar-Narenji A. Biogenesis of Selenium Nanoparticles Using Green Chemistry. Top Curr Chem (Cham) 2017; 375:88. [PMID: 29124492 DOI: 10.1007/s41061-017-0176-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/30/2017] [Indexed: 12/18/2022]
Abstract
Selenium binds some enzymes such as glutathione peroxidase and thioredoxin reductase, which may be activated in biological infections and oxidative stress. Chemical and physical methods for synthesizing nanoparticles, apart from being expensive, have their own particular risks. However, nanoparticle synthesis through green chemistry is a safe procedure that different biological sources such as bacteria, fungi, yeasts, algae and plants can be the catalyst bed for processing. Synthesis of selenium nanoparticles (SeNPs) by macro/microorganisms causes variation in morphology and shape of the particles is due to diversity of reduction enzymes in organisms. Reducing enzymes of microorganisms by changing the status of redox convert metal ions (Se2-) to SeNPs without charge (Se0). Biological activity of SeNPs includes their protective role against DNA oxidation. Because of the biological and industrial properties, SeNPs have wide applications in the fields of medicine, microelectronic, agriculture and animal husbandry. SeNPs can show strong antimicrobial effects on the growth and proliferation of microorganisms in a dose-dependent manner. The objective of this review is to consider SeNPs applications to various organisms.
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Affiliation(s)
- Sara Shoeibi
- Cellular and Molecular Research Center, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Paul Mozdziak
- Graduate Physiology Program, North Carolina State University, Raleigh, NC, USA
| | - Afsaneh Golkar-Narenji
- Department of Genetic, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Organic Nanoparticle-Based Combinatory Approaches for Gene Therapy. Trends Biotechnol 2017; 35:1121-1124. [PMID: 28818304 DOI: 10.1016/j.tibtech.2017.07.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/17/2017] [Accepted: 07/24/2017] [Indexed: 01/24/2023]
Abstract
Engineered organic nanoparticle (ONP)-mediated co-delivery of genes and therapeutic agents is emerging as a powerful tool in the treatment of several genetic and non-genetic disorders. The ONP-based combinatory approach provides a technological platform that delivers genes with chemo/radio/photo/immunotherapies for the prevention or treatment of disease progression.
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