1
|
Marcińczyk M, Krasucka P, Duan W, Bo P, Oleszczuk P. Effect of chemical aging on phosphate adsorption and ecotoxicological properties of magnesium-modified biochar. CHEMOSPHERE 2024; 349:140721. [PMID: 37972863 DOI: 10.1016/j.chemosphere.2023.140721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/20/2023] [Accepted: 11/12/2023] [Indexed: 11/19/2023]
Abstract
Using magnesium-biochar composites (Mg-BC) in adsorption allows for the efficient and economically relevant removal of phosphate (PO43-) from water and wastewater. Applying Mg-BC for pollutant removal requires evaluating the adsorption capacity of composites and their ecotoxicological properties. Investigating the composite aging during the application of these composites into the soil is also essential. In the present study, nonaged and aged (at 60 or 90 °C) Mg-BC composites were investigated in the context of pyrolysis temperature (500 or 700 °C). All analyzed biochars were examined by Fourier transform infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy and surface area. The content of polycyclic aromatic hydrocarbons (PAHs) (bioavailable Cfree and organic solvent-extractable Ctot), heavy metals (HMs), and environmentally persistent free radicals (EPFRs) were determined. Ecotoxicity was evaluated using tests with Folsomia candida and Allivibrio fischeri. The dependence of adsorption on pyrolysis temperature and composite aging time was observed. Changes in physicochemical properties occurring as a result of aging reduced the adsorption of PO43- on Mg-BC composites. It was found that nonaged Mg-BC700 was more effective (9.55 mg g -1) in the adsorption of PO43- than Mg-BC500 (5.75 mg g-1). The adsorption capacities of aged composites were from 21 to 61% lower than those of the nonaged composites. Due to aging, the content of Cfree PAHs increased by 3-5 times depending on the pyrolysis temperature. However, aging reduced the Ctot PAHs in all composites from 24 to 35% depending on the pyrolysis temperature. Ecotoxicological evaluation of Mg-BC composites showed increased toxicity after aging to both organisms. The use of aged BC potentially increases the contaminant content and toxicity of Mg-BC composites.
Collapse
Affiliation(s)
- Marta Marcińczyk
- Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20-031, Lublin, Poland
| | - Patrycja Krasucka
- Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20-031, Lublin, Poland
| | - Wenyan Duan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Pan Bo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Patryk Oleszczuk
- Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20-031, Lublin, Poland.
| |
Collapse
|
2
|
Huang CW, Lin C, Nguyen MK, Hussain A, Bui XT, Ngo HH. A review of biosensor for environmental monitoring: principle, application, and corresponding achievement of sustainable development goals. Bioengineered 2023; 14:58-80. [PMID: 37377408 DOI: 10.1080/21655979.2022.2095089] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 06/29/2023] Open
Abstract
Human health/socioeconomic development is closely correlated to environmental pollution, highlighting the need to monitor contaminants in the real environment with reliable devices such as biosensors. Recently, variety of biosensors gained high attention and employed as in-situ application, in real-time, and cost-effective analytical tools for healthy environment. For continuous environmental monitoring, it is necessary for portable, cost-effective, quick, and flexible biosensing devices. These benefits of the biosensor strategy are related to the Sustainable Development Goals (SDGs) established by the United Nations (UN), especially with reference to clean water and sources of energy. However, the relationship between SDGs and biosensor application for environmental monitoring is not well understood. In addition, some limitations and challenges might hinder the biosensor application on environmental monitoring. Herein, we reviewed the different types of biosensors, principle and applications, and their correlation with SDG 6, 12, 13, 14, and 15 as a reference for related authorities and administrators to consider. In this review, biosensors for different pollutants such as heavy metals and organics were documented. The present study highlights the application of biosensor for achieving SDGs. Current advantages and future research aspects are summarized in this paper.Abbreviations: ATP: Adenosine triphosphate; BOD: Biological oxygen demand; COD: Chemical oxygen demand; Cu-TCPP: Cu-porphyrin; DNA: Deoxyribonucleic acid; EDCs: Endocrine disrupting chemicals; EPA: U.S. Environmental Protection Agency; Fc-HPNs: Ferrocene (Fc)-based hollow polymeric nanospheres; Fe3O4@3D-GO: Fe3O4@three-dimensional graphene oxide; GC: Gas chromatography; GCE: Glassy carbon electrode; GFP: Green fluorescent protein; GHGs: Greenhouse gases; HPLC: High performance liquid chromatography; ICP-MS: Inductively coupled plasma mass spectrometry; ITO: Indium tin oxide; LAS: Linear alkylbenzene sulfonate; LIG: Laser-induced graphene; LOD: Limit of detection; ME: Magnetoelastic; MFC: Microbial fuel cell; MIP: Molecular imprinting polymers; MWCNT: Multi-walled carbon nanotube; MXC: Microbial electrochemical cell-based; NA: Nucleic acid; OBP: Odorant binding protein; OPs: Organophosphorus; PAHs: Polycyclic aromatic hydrocarbons; PBBs: Polybrominated biphenyls; PBDEs: Polybrominated diphenyl ethers; PCBs: Polychlorinated biphenyls; PGE: Polycrystalline gold electrode; photoMFC: photosynthetic MFC; POPs: Persistent organic pollutants; rGO: Reduced graphene oxide; RNA: Ribonucleic acid; SDGs: Sustainable Development Goals; SERS: Surface enhancement Raman spectrum; SPGE: Screen-printed gold electrode; SPR: Surface plasmon resonance; SWCNTs: single-walled carbon nanotubes; TCPP: Tetrakis (4-carboxyphenyl) porphyrin; TIRF: Total internal reflection fluorescence; TIRF: Total internal reflection fluorescence; TOL: Toluene-catabolic; TPHs: Total petroleum hydrocarbons; UN: United Nations; VOCs: Volatile organic compounds.
Collapse
Affiliation(s)
- Chi-Wei Huang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Chitsan Lin
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
- Ph.D. Program in Maritime Science and Technology, College of Maritime, National Kaohsiung University of Science and TechnologyPh.D. Program in Maritime Science and Technology, Kaohsiung, Taiwan
| | - Minh Ky Nguyen
- Ph.D. Program in Maritime Science and Technology, College of Maritime, National Kaohsiung University of Science and TechnologyPh.D. Program in Maritime Science and Technology, Kaohsiung, Taiwan
| | - Adnan Hussain
- Ph. D. Program of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Xuan-Thanh Bui
- Department Water Science & Technology, Key Laboratory of Advanced Waste Treatment Technology, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Ho Chi Minh City, Vietnam
- Department Water Science & Technology, Faculty of Environment & Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
| | - Huu Hao Ngo
- Department Water Science & Technology, Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney NSW, Australia
| |
Collapse
|
3
|
Zakharova OV, Belova VV, Baranchikov PA, Kostyakova AA, Muratov DS, Grigoriev GV, Chebotaryova SP, Kuznetsov DV, Gusev AA. The Conditions Matter: The Toxicity of Titanium Trisulfide Nanoribbons to Bacteria E. coli Changes Dramatically Depending on the Chemical Environment and the Storage Time. Int J Mol Sci 2023; 24:ijms24098299. [PMID: 37176006 PMCID: PMC10179056 DOI: 10.3390/ijms24098299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/24/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
In this work, we present an analysis of the antibacterial activity of TiS3 nanostructures in water and 0.9% NaCl solution suspensions. TiS3 nanoribbons 1-10 µm long, 100-300 nm wide, and less than 100 nm thick were produced by the direct reaction of pure titanium powder with elemental sulphur in a quartz tube sealed under vacuum. For the toxicity test of a bioluminescent strain of E. coli we used concentrations from 1 to 0.0001 g L-1 and also studied fresh suspensions and suspensions left for 24 h. The strongest toxic effect was observed in freshly prepared water solutions where the luminescence of bacteria decreased by more than 75%. When saline solution was substituted for water or when the solutions were stored for 24 h it resulted in a considerable decrease in the TiS3 antibacterial effect. The toxicity of TiS3 in water exceeded the toxicity of the reference TiO2 nanoparticles, though when saline solution was used instead of water the opposite results were observed. In addition, we did not find a relationship between the antibacterial activity of water suspensions of nanoribbons and the stability of their colloidal systems, which indicates an insignificant contribution to the toxicity of aggregation processes. In 0.9% NaCl solution suspensions, toxicity increased in proportion to the increase in the zeta potential. We suppose that the noted specificity of toxicity is associated with the emission of hydrogen sulphide molecules from the surface of nanoribbons, which, depending on the concentration, can either decrease or increase oxidative stress, which is considered the key mechanism of nanomaterial cytotoxicity. However, the exact underlying mechanisms need further investigation. Thus, we have shown an important role of the dispersion medium and the period of storage in the antibacterial activity of TiS3 nanoribbons. Our results could be used in nanotoxicological studies of other two-dimensional nanomaterials, and for the development of novel antibacterial substances and other biomedical applications of this two-dimensional material.
Collapse
Affiliation(s)
- Olga V Zakharova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Engineering Center, Plekhanov Russian University of Economics, 117997 Moscow, Russia
| | - Valeria V Belova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Peter A Baranchikov
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Anna A Kostyakova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Dmitry S Muratov
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Scientific School "Chemistry and Technology of Polymer Materials", Plekhanov Russian University of Economics, Stremyanny Lane 36, 117997 Moscow, Russia
| | - Gregory V Grigoriev
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Svetlana P Chebotaryova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Denis V Kuznetsov
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
| | - Alexander A Gusev
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Engineering Center, Plekhanov Russian University of Economics, 117997 Moscow, Russia
| |
Collapse
|
4
|
Kicheeva AG, Sushko ES, Bondarenko LS, Kydralieva KA, Pankratov DA, Tropskaya NS, Dzeranov AA, Dzhardimalieva GI, Zarrelli M, Kudryasheva NS. Functionalized Magnetite Nanoparticles: Characterization, Bioeffects, and Role of Reactive Oxygen Species in Unicellular and Enzymatic Systems. Int J Mol Sci 2023; 24:ijms24021133. [PMID: 36674650 PMCID: PMC9861541 DOI: 10.3390/ijms24021133] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 12/24/2022] [Accepted: 12/27/2022] [Indexed: 01/10/2023] Open
Abstract
The current study evaluates the role of reactive oxygen species (ROS) in bioeffects of magnetite nanoparticles (MNPs), such as bare (Fe3O4), humic acids (Fe3O4-HA), and 3-aminopropyltriethoxysilane (Fe3O4-APTES) modified MNPs. Mössbauer spectroscopy was used to identify the local surrounding for Fe atom/ions and the depth of modification for MNPs. It was found that the Fe3O4-HA MNPs contain the smallest, whereas the Fe3O4-APTES MNPs contain the largest amount of Fe2+ ions. Bioluminescent cellular and enzymatic assays were applied to monitor the toxicity and anti-(pro-)oxidant activity of MNPs. The contents of ROS were determined by a chemiluminescence luminol assay evaluating the correlations with toxicity/anti-(pro-)oxidant coefficients. Toxic effects of modified MNPs were found at higher concentrations (>10−2 g/L); they were related to ROS storage in bacterial suspensions. MNPs stimulated ROS production by the bacteria in a wide concentration range (10−15−1 g/L). Under the conditions of model oxidative stress and higher concentrations of MNPs (>10−4 g/L), the bacterial bioassay revealed prooxidant activity of all three MNP types, with corresponding decay of ROS content. Bioluminescence enzymatic assay did not show any sensitivity to MNPs, with negligible change in ROS content. The results clearly indicate that cell-membrane processes are responsible for the bioeffects and bacterial ROS generation, confirming the ferroptosis phenomenon based on iron-initiated cell-membrane lipid peroxidation.
Collapse
Affiliation(s)
- Arina G. Kicheeva
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
| | - Ekaterina S. Sushko
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
- Institute of Physics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
| | - Lyubov S. Bondarenko
- Department of General Engineering, Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
| | - Kamila A. Kydralieva
- Department of General Engineering, Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
| | - Denis A. Pankratov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Nataliya S. Tropskaya
- Department of General Engineering, Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
- Sklifosovsky Research Institute for Emergency Medicine, 129010 Moscow, Russia
| | - Artur A. Dzeranov
- Department of General Engineering, Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
- Sklifosovsky Research Institute for Emergency Medicine, 129010 Moscow, Russia
| | - Gulzhian I. Dzhardimalieva
- Department of General Engineering, Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - Mauro Zarrelli
- Institute for Polymers, Composites and Biomaterials, National Research Council of Italy, P.le Fermi, 1, 80055 Portici, Italy
| | - Nadezhda S. Kudryasheva
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia
- Correspondence: ; Tel.: +7-3912-494-242
| |
Collapse
|
5
|
Kolesnik OV, Rozhko TV, Kudryasheva NS. Marine Bacteria under Low-Intensity Radioactive Exposure: Model Experiments. Int J Mol Sci 2022; 24:ijms24010410. [PMID: 36613854 PMCID: PMC9820739 DOI: 10.3390/ijms24010410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
Radioactive contaminants create problems all over world, involving marine ecosystems, with their ecological importance increasing in the future. The review focuses on bioeffects of a series of alpha and beta emitting radioisotopes (americium-241, uranium-(235 + 238), thorium-232, and tritium) and gamma radiation. Low-intensity exposures are under special consideration. Great attention has been paid to luminous marine bacteria as representatives of marine microorganisms and a conventional bioassay system. This bioassay uses bacterial bioluminescence intensity as the main testing physiological parameter; currently, it is widely applied due to its simplicity and sensitivity. Dependences of the bacterial luminescence response on the exposure time and irradiation intensity were reviewed, and applicability of hormetic or threshold models was discussed. A number of aspects of molecular intracellular processes under exposure to low-intensity radiation were analyzed: (a) changes in the rates of enzymatic processes in bacteria with the bioluminescent system of coupled enzymatic reactions of NADH:FMN-oxidoreductase and bacterial luciferase taken as an example; (b) consumption of an intracellular reducer, NADH; (c) active role of reactive oxygen species; (d) repairing of the DNA damage. The results presented confirm the function of humic substances as natural radioprotectors.
Collapse
Affiliation(s)
- Olga V. Kolesnik
- Institute of Biophysics SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS’, 660036 Krasnoyarsk, Russia
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Tatiana V. Rozhko
- FSBEI HE V.F. Voino-Yasenetsky KrasSMU MOH, 660022 Krasnoyarsk, Russia
| | - Nadezhda S. Kudryasheva
- Institute of Biophysics SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS’, 660036 Krasnoyarsk, Russia
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia
- Correspondence:
| |
Collapse
|
6
|
Wlodkowic D, Jansen M. High-throughput screening paradigms in ecotoxicity testing: Emerging prospects and ongoing challenges. CHEMOSPHERE 2022; 307:135929. [PMID: 35944679 DOI: 10.1016/j.chemosphere.2022.135929] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 06/09/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
The rapidly increasing number of new production chemicals coupled with stringent implementation of global chemical management programs necessities a paradigm shift towards boarder uses of low-cost and high-throughput ecotoxicity testing strategies as well as deeper understanding of cellular and sub-cellular mechanisms of ecotoxicity that can be used in effective risk assessment. The latter will require automated acquisition of biological data, new capabilities for big data analysis as well as computational simulations capable of translating new data into in vivo relevance. However, very few efforts have been so far devoted into the development of automated bioanalytical systems in ecotoxicology. This is in stark contrast to standardized and high-throughput chemical screening and prioritization routines found in modern drug discovery pipelines. As a result, the high-throughput and high-content data acquisition in ecotoxicology is still in its infancy with limited examples focused on cell-free and cell-based assays. In this work we outline recent developments and emerging prospects of high-throughput bioanalytical approaches in ecotoxicology that reach beyond in vitro biotests. We discuss future importance of automated quantitative data acquisition for cell-free, cell-based as well as developments in phytotoxicity and in vivo biotests utilizing small aquatic model organisms. We also discuss recent innovations such as organs-on-a-chip technologies and existing challenges for emerging high-throughput ecotoxicity testing strategies. Lastly, we provide seminal examples of the small number of successful high-throughput implementations that have been employed in prioritization of chemicals and accelerated environmental risk assessment.
Collapse
Affiliation(s)
- Donald Wlodkowic
- The Neurotox Lab, School of Science, RMIT University, Melbourne, VIC, 3083, Australia.
| | - Marcus Jansen
- LemnaTec GmbH, Nerscheider Weg 170, 52076, Aachen, Germany
| |
Collapse
|
7
|
Yang J, Hu S, Wu M, Liao A, Liang S, Lin Y. Construction of luminescent Escherichia coli via expressing lux operons and their application on toxicity test. Appl Microbiol Biotechnol 2022; 106:6317-6333. [PMID: 36028635 DOI: 10.1007/s00253-022-12136-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 12/01/2022]
Abstract
Recombinant luminescent Escherichia coli strains could be used to detect the toxicity of pure or mixed contaminants as a light-off sensor. In this work, the lux operon of Photobacterium phosphoreum T3 was identified for the first time. Recombinant luminescent E. coli strains were constructed via expressing the lux operons of P. phosphoreum T3 and Vibrio qinghaiensis Q67 in E. coli MG1655, and the optimal protectant containing 10% (w/v) trehalose and 4% sucrose was used to prepare the freeze-dried recombinant luminescent E. coli cells. Then, these freeze-dried E. coli cells were subjected to acute toxicity detection. The results showed that luminescent E. coli strains displayed sensitive toxic responses to BPA, nFe2O3, Cd, Pb, As, and Hg, for example, the EC50 values of BPA and nFe2O3 to luminescent E. coli strains ranged from 1.54 to 50.19 mg/l and 17.50 to 21.52 mg/l, respectively. Indeed, luminescent E. coli strains exhibited more sensitive responses to Cd, Pb, and Hg than the natural strain Q67. The results suggested that recombinant luminescent E. coli strains could be used for the detection of acute toxicity. Furthermore, the combined toxicities of BPA and nFe2O3, Hg, and Pb were measured, and the joint effects of these mixtures were evaluated with luminescent E. coli. The results indicated that the joint effects of BPA and nFe2O3 suggested to be synergistic or additive to luminescent E. coli, while the joint effects of heavy metals and nFe2O3 exhibited additivities. The cellular endocytosis for Fe2O3 nanoparticles was not observed, which could explain the additive instead of synergistic effects between heavy metals and nFe2O3. KEY POINTS: • Sequence of the lux operon from P. phosphoreum T3 was reported for the first time. • Recombinant luminescent E. coli was more sensitive to Cd, Pb, and Hg than Q67. • Joint effects of BPA and nFe2O3 were synergistic or additive to luminescent E. coli.
Collapse
Affiliation(s)
- Jun Yang
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Shulin Hu
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Minhui Wu
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Anqi Liao
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Shuli Liang
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Ying Lin
- School of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China. .,Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou, 510006, China.
| |
Collapse
|
8
|
Sihtmäe M, Silm E, Kriis K, Kahru A, Kanger T. Aminocatalysts are More Environmentally Friendly than Hydrogen-Bonding Catalysts. CHEMSUSCHEM 2022; 15:e202201045. [PMID: 35686861 DOI: 10.1002/cssc.202201045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/10/2022] [Indexed: 06/15/2023]
Abstract
The importance of asymmetric organocatalysis in contemporary organic synthesis is widely acknowledged. However, there are practically no data on the environmental safety of organocatalysts, although this aspect is crucial for the sustainability of all new materials, chemicals, and technologies. To start to fill this data-gap, a library of 26 organocatalysts containing hydrogen-bonding catalysts [(thio)ureas and squaramides] and aminocatalysts (primary or secondary amines) was evaluated for their toxicity using the naturally luminescent Vibrio fischeri bacteria (ISO assay; one of the most widely used ecotoxicity tests). Thioureas and squaramides were shown to be relatively toxic: none of them was ranked as "not harmful" (i. e., half maximal effective concentration EC50 >100 mg L-1 ), whereas the presence of the trifluoromethyl moiety increased their toxic effect. Importantly, the aminocatalysts, whose EC50 values ranged from 25 to >300 mg L-1 , could be considered remarkably more environmentally safe or green alternatives.
Collapse
Affiliation(s)
- Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Estelle Silm
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618, Tallinn, Estonia
| | - Kadri Kriis
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618, Tallinn, Estonia
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
- Estonian Academy of Sciences, 6 Kohtu, 10130, Tallinn, Estonia
| | - Tõnis Kanger
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618, Tallinn, Estonia
| |
Collapse
|
9
|
Tian Q, Wu J, Xu H, Hu Z, Huo Y, Wang L. Cryo-EM structure of the fatty acid reductase LuxC-LuxE complex provides insights into bacterial bioluminescence. J Biol Chem 2022; 298:102006. [PMID: 35504354 PMCID: PMC9157457 DOI: 10.1016/j.jbc.2022.102006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/25/2022] Open
Abstract
The discovery of reduced flavin mononucleotide and fatty aldehydes as essential factors of light emission facilitated study of bacterial luminescence. Although the molecular mechanisms underlying bacterial luminescence have been studied for more than 60 years, the structure of the bacterial fatty acid reductase complex remains unclear. Here, we report the cryo-EM structure of the Photobacterium phosphoreum fatty acid reductase complex LuxC–LuxE to a resolution of 2.79 Å. We show that the active site Lys238/Arg355 pair of LuxE is >30 Å from the active site Cys296 of LuxC, implying that catalysis relies on a large conformational change. Furthermore, mutagenesis and biochemical experiments support that the L-shaped cleft inside LuxC plays an important role in substrate binding and reaction. We obtained a series of mutants with significantly improved activity as measured by in vitro bioluminescence assays and demonstrated that the double mutant W111A/F483K displayed the highest activity (370% of the WT). Our results indicated that the activity of LuxC significantly affects the bacterial bioluminescence reaction. Finally, we expressed this mutated lux operon in Escherichia coli but observed that the in vivo concentrations of ATP and NADPH limited the enzyme activity; thus, we conclude that the luminous intensity mainly depends on the level of metabolic energy.
Collapse
Affiliation(s)
- Qingwei Tian
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Jingting Wu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Haifeng Xu
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Yangao Huo
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
| | - Liyan Wang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China.
| |
Collapse
|
10
|
Abstract
Tritium is a byproduct of many radiochemical reactions in the nuclear industry, and its effects on aquatic organisms, particularly low-dose effects, deserve special attention. The low-dose effects of tritium on aquatic microbiota have been intensively studied using luminous marine bacteria as model microorganisms. Low-dose physiological activation has been demonstrated and explained by the signaling role of reactive oxygen species through the “bystander effect” in bacterial suspensions. The activation of microbial functions in natural reservoirs by low tritium concentrations can cause unpredictable changes in food chains and imbalances in the natural equilibrium. The incorporation of tritium from the free form into organically bound compounds mainly occurs in the dark and at a temperature of 25 °C. When tritium is ingested by marine animals, up to 56% of tritium is accumulated in the muscle tissue and up to 36% in the liver. About 50% of tritium in the liver is bound in non-exchangeable forms. Human ingestion of water and food products contaminated with background levels of tritium does not significantly contribute to the total dose load on the human body.
Collapse
|
11
|
Yang J, Hu S, Liao A, Weng Y, Liang S, Lin Y. Preparation of freeze‐dried bioluminescent bacteria and their application in the detection of acute toxicity of bisphenol A and heavy metals. Food Sci Nutr 2022; 10:1841-1853. [PMID: 35702313 PMCID: PMC9179163 DOI: 10.1002/fsn3.2800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/10/2022] [Accepted: 02/18/2022] [Indexed: 12/22/2022] Open
Abstract
Current chemical analysis approaches for contaminants have failed to reveal their biotoxicity. Moreover, conventional bioassays are time consuming and exhibit poor repeatability. In this study, we performed the acute toxicity detection of various contaminants (chromium (Cr), cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg), tin (Sn), nickel (Ni), and bisphenol A (BPA)) with four bioluminescent bacteria (Vibrio qinghaiensis Q67, V. fischeri, Photobacterium phosphoreum T3, and P. phosphoreum 502) using a rapid, flexible, and low‐cost bioassay. We found that the temperature affected the bacterial luminescence, and freeze‐dried cells exhibited sensitive toxic responses to contaminants. Indeed, the optimized protectants containing 12% (w/v) trehalose, 4% sucrose, and 2% sorbitol displayed better luminescence and toxic sensitivity. Furthermore, freeze‐dried powders of these strains were prepared and subjected to acute toxicity detection. The results showed that all contaminants exhibited acute toxicity toward Q67, but the other strains did not show obvious response to nickel and tin. The relative half‐maximal effective concentration (EC50) values of BPA, Cr, Cd, Pb, As, Hg, Ni, and Sn to Q67 were 0.674, 1.313, 11.137, 5.921, 4.674, 0.911, 5.941, and 54.077 mg/L, respectively. In addition, the EC50 values of contaminants toward different strains were suggested to be statistically significant. Freeze‐dried Q67 exhibited toxic responses to more contaminants than the other bioluminescent strains; therefore, Q67 was selected to be more suitable than the other strains for single and mixture toxicity detection tests. Compared with other strains, Q67 was more appropriate for the rapid screening of the mixture toxicity of contaminants in samples as a nonspecific screening sensor before the use of standard analysis approaches.
Collapse
Affiliation(s)
- Jun Yang
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering South China University of Technology Guangzhou China
| | - Shulin Hu
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering South China University of Technology Guangzhou China
| | - Anqi Liao
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering South China University of Technology Guangzhou China
| | - Yetian Weng
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
| | - Shuli Liang
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering South China University of Technology Guangzhou China
| | - Ying Lin
- School of Biology and Biological Engineering South China University of Technology Guangzhou China
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering South China University of Technology Guangzhou China
| |
Collapse
|
12
|
Czieborowski M, Kemperman AJB, Rolevink E, Blom J, Visser T, Philipp B. A two-step bioluminescence assay for optimizing antibacterial coating of hollow-fiber membranes with polydopamine in an integrative approach. J Microbiol Methods 2022; 196:106452. [PMID: 35341879 DOI: 10.1016/j.mimet.2022.106452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 11/16/2022]
Abstract
Pure-water filtration membranes are often fouled by bacterial biofilms. Antibacterial coatings for preventing biofilm formation on such membranes should not rely on leaching of inhibiting compounds but should only be effective on surface contact. Certified assays for antibacterial coatings do not sufficiently exclude leaching effects and involve nutrient-rich cultivation media that do not correspond to conditions in pure-water systems. In this study, a two-step bioluminescence assay was developed for optimizing an antibacterial coating of PES/PVP ultrafiltration hollow-fiber membranes with a polydopamine as a sustainable, bio-inspired material for preventing bacterial biofilm formation. In the first step, leaching of the antimicrobial coating was analyzed by a bioluminescence assay with supernatants generated by washing coated membranes. In the second step, bioluminescence of bacterial biofilms on coated and uncoated membranes was measured using a nutrient-poor medium resembling site-specific conditions. Based on this bioluminescence assay, an optimized protocol for the coating process could be established by acidic polymerization of dopamine using 2 g/L sodium periodate and 4 g/L dopamine at 40 °C for 20 min reaction time. With coatings produced in this way, bioluminescence was reduced on coated membranes only while the corresponding supernatants exhibited no inhibitory effects.
Collapse
Affiliation(s)
- Michael Czieborowski
- Westfälische Wilhelms-Universität Münster, Institute for Molecular Microbiology and Biotechnology, Münster, Germany
| | | | | | | | | | - Bodo Philipp
- Westfälische Wilhelms-Universität Münster, Institute for Molecular Microbiology and Biotechnology, Münster, Germany; Fraunhofer-Institut für Molekularbiologie und Angewandte Oekologie IME, Schmallenberg, Germany.
| |
Collapse
|
13
|
Xu C, Zhong L, Huang Z, Li C, Lian J, Zheng X, Liang Y. Real-time monitoring of Ralstonia solanacearum infection progress in tomato and Arabidopsis using bioluminescence imaging technology. PLANT METHODS 2022; 18:7. [PMID: 35033123 PMCID: PMC8761306 DOI: 10.1186/s13007-022-00841-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 01/06/2022] [Indexed: 06/01/2023]
Abstract
BACKGROUND Ralstonia solanacearum, one of the most devastating bacterial plant pathogens, is the causal agent of bacterial wilt. Recently, several studies on resistance to bacterial wilt have been conducted using the Arabidopsis-R. solanacearum system. However, the progress of R. solanacearum infection in Arabidopsis is still unclear. RESULTS We generated a bioluminescent R. solanacearum by expressing plasmid-based luxCDABE. Expression of luxCDABE did not alter the bacterial growth and pathogenicity. The light intensity of bioluminescent R. solanacearum was linearly related to bacterial concentrations from 104 to 108 CFU·mL-1. After root inoculation with bioluminescent R. solanacearum strain, light signals in tomato and Arabidopsis were found to be transported from roots to stems via the vasculature. Quantification of light intensity from the bioluminescent strain accurately reported the difference in disease resistance between Arabidopsis wild type and resistant mutants. CONCLUSIONS Bioluminescent R. solanacearum strain spatially and quantitatively measured bacterial growth in tomato and Arabidopsis, and offered a tool for the high-throughput study of R. solanacearum-Arabidopsis interaction in the future.
Collapse
Affiliation(s)
- Cuihong Xu
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Lingkun Zhong
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Zeming Huang
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Chenying Li
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jiazhang Lian
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xuefang Zheng
- Agricultural Bioresources Research Institute, Fujian Academy of Agricultural Sciences, No. 247 Wusi Road, Fuzhou, 350003, China
| | - Yan Liang
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
14
|
Costa AM, Dos Santos Valentim MR, da Silva LF, de Almeida R, Daflon SDA, Quintaes BR, Campos JC. Comparison between Aliivibrio fischeri and activated sludge microorganisms in the evaluation of the toxic pollutants of leachates from Brazilian landfills. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:1546-1558. [PMID: 34351579 DOI: 10.1007/s11356-021-15771-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Ecotoxicological assessment of landfill leachate has become a priority to determine its impacts on the ecosystem. Toxicity assays with microorganisms stand out due to their quick response, low cost and ease of testing. In this context, the present study evaluated the acute toxic effects of leachates from two landfills of different ages and modes of operation to bacterium Aliivibrio fischeri and activated sludge microorganisms and the ammonia nitrogen and humic substances (HS) sensitivity to these organisms. Reductions greater than 30% in leachate toxicity were observed after ammonia removal for A. fischeri and activated sludge microorganisms. After 97% removal of HS, the greater reductions in toxicity (44.28 to 79.82%) were verified for microbial species studied, indicating that the organic compounds (measured as chemical oxygen demand, total organic carbon and humic substances) were the primary pollutants responsible for the toxicity of the leachates. Concerning the organisms studied, A. fischeri showed greater sensitivity to the leachates' pollutants compared to the activated sludge microorganisms. Nevertheless, a strong correlation was observed between A. fischeri and activated sludge microorganisms' toxicity responses, suggesting that respirometry assay can be used to determine leachate toxicity.
Collapse
Affiliation(s)
- Alyne Moraes Costa
- School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos Avenue 149, Rio de Janeiro, 21941-909, Brazil
| | | | - Livia Ferreira da Silva
- School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos Avenue 149, Rio de Janeiro, 21941-909, Brazil
| | - Ronei de Almeida
- School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos Avenue 149, Rio de Janeiro, 21941-909, Brazil
| | - Sarah Dario Alves Daflon
- School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos Avenue 149, Rio de Janeiro, 21941-909, Brazil
| | - Bianca Ramalho Quintaes
- Municipal Company of Urban Cleaning of Rio de Janeiro, Américo de Souza Braga street 647, Rio de Janeiro, 22783-385, Brazil
| | - Juacyara Carbonelli Campos
- School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos Avenue 149, Rio de Janeiro, 21941-909, Brazil.
| |
Collapse
|
15
|
Thiourea Organocatalysts as Emerging Chiral Pollutants: En Route to Porphyrin-Based (Chir)Optical Sensing. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9100278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Environmental pollution with chiral organic compounds is an emerging problem requiring innovative sensing methods. Amino-functionalized thioureas, such as 2-(dimethylamino)cyclohexyl-(3,5-bis(trifluoromethyl)phenyl)thiourea (Takemoto’s catalyst), are widely used organocatalysts with virtually unknown environmental safety data. Ecotoxicity studies based on the Vibrio fischeri luminescence inhibition test reveal significant toxicity of Takemoto’s catalyst (EC50 = 7.9 mg/L) and its NH2-substituted analog (EC50 = 7.2–7.4 mg/L). The observed toxic effect was pronounced by the influence of the trifluoromethyl moiety. En route to the porphyrin-based chemosensing of Takemoto-type thioureas, their supramolecular binding to a series of zinc porphyrins was studied with UV-Vis and circular dichroism (CD) spectroscopy, computational analysis and single crystal X-ray diffraction. The association constant values generally increased with the increasing electron-withdrawing properties of the porphyrins and electron-donating ability of the thioureas, a result of the predominant Zn⋯N cation–dipole (Lewis acid–base) interaction. The binding event induced a CD signal in the Soret band region of the porphyrin hosts—a crucial property for chirality sensing of Takemoto-type thioureas.
Collapse
|
16
|
Vihodceva S, Šutka A, Sihtmäe M, Rosenberg M, Otsus M, Kurvet I, Smits K, Bikse L, Kahru A, Kasemets K. Antibacterial Activity of Positively and Negatively Charged Hematite ( α-Fe 2O 3) Nanoparticles to Escherichia coli, Staphylococcus aureus and Vibrio fischeri. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:652. [PMID: 33800165 PMCID: PMC7999532 DOI: 10.3390/nano11030652] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 02/08/2023]
Abstract
In the current study, the antibacterial activity of positively and negatively charged spherical hematite (α-Fe2O3) nanoparticles (NPs) with primary size of 45 and 70 nm was evaluated against clinically relevant bacteria Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive) as well as against naturally bioluminescent bacteria Vibrio fischeri (an ecotoxicological model organism). α-Fe2O3 NPs were synthesized using a simple green hydrothermal method and the surface charge was altered via citrate coating. To minimize the interference of testing environment with NP's physic-chemical properties, E. coli and S. aureus were exposed to NPs in deionized water for 30 min and 24 h, covering concentrations from 1 to 1000 mg/L. The growth inhibition was evaluated following the postexposure colony-forming ability of bacteria on toxicant-free agar plates. The positively charged α-Fe2O3 at concentrations from 100 mg/L upwards showed inhibitory activity towards E. coli already after 30 min of contact. Extending the exposure to 24 h caused total inhibition of growth at 100 mg/L. Bactericidal activity of positively charged hematite NPs against S. aureus was not observed up to 1000 mg/L. Differently from positively charged hematite NPs, negatively charged citrate-coated α-Fe2O3 NPs did not exhibit any antibacterial activity against E. coli and S. aureus even at 1000 mg/L. Confocal laser scanning microscopy and flow cytometer analysis showed that bacteria were more tightly associated with positively charged α-Fe2O3 NPs than with negatively charged citrate-coated α-Fe2O3 NPs. Moreover, the observed associations were more evident in the case of E. coli than S. aureus, being coherent with the toxicity results. Vibrio fischeri bioluminescence inhibition assays (exposure medium 2% NaCl) and colony forming ability on agar plates showed no (eco)toxicity of α-Fe2O3 (EC50 and MBC > 1000 mg/L).
Collapse
Affiliation(s)
- Svetlana Vihodceva
- Research Laboratory of Functional Materials Technologies, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Paula Valdena 3/7, LV-1048 Riga, Latvia;
| | - Andris Šutka
- Research Laboratory of Functional Materials Technologies, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Paula Valdena 3/7, LV-1048 Riga, Latvia;
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Merilin Rosenberg
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
- Institute of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Maarja Otsus
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Imbi Kurvet
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Krisjanis Smits
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia; (K.S.); (L.B.)
| | - Liga Bikse
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia; (K.S.); (L.B.)
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
- Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| |
Collapse
|
17
|
Rozhko TV, Nemtseva EV, Gardt MV, Raikov AV, Lisitsa AE, Badun GA, Kudryasheva NS. Enzymatic Responses to Low-Intensity Radiation of Tritium. Int J Mol Sci 2020; 21:E8464. [PMID: 33187108 PMCID: PMC7696592 DOI: 10.3390/ijms21228464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
The present study considers a possible role of enzymatic reactions in the adaptive response of cells to the beta-emitting radionuclide tritium under conditions of low-dose exposures. Effects of tritiated water (HTO) on the reactions of bacterial luciferase and NAD(P)H:FMN-oxidoreductase, as well as a coupled system of these two reactions, were studied at radioactivity concentrations ≤ 200 MBq/L. Additionally, one of the simplest enzymatic reactions, photobiochemical proton transfer in Coelenteramide-containing Fluorescent Protein (CLM-FP), was also investigated. We found that HTO increased the activity of NAD(P)H:FMN-oxidoreductase at the initial stage of its reaction (by up to 230%); however, a rise of luciferase activity was moderate (<20%). The CLM-FP samples did not show any increase in the rate of the photobiochemical proton transfer under the exposure to HTO. The responses of the enzyme systems were compared to the 'hormetic' response of luminous marine bacterial cells studied earlier. We conclude that (1) the oxidoreductase reaction contributes significantly to the activation of the coupled enzyme system and bacterial cells by tritium, and (2) an increase in the organization level of biological systems promotes the hormesis phenomenon.
Collapse
Affiliation(s)
- Tatiana V. Rozhko
- Department of Medical and Biological Physics, Krasnoyarsk State Medical Academy, 660022 Krasnoyarsk, Russia
| | - Elena V. Nemtseva
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia; (E.V.N.); (M.V.G.); (A.V.R.); (A.E.L.); (N.S.K.)
- Institute of Biophysics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia
| | - Maria V. Gardt
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia; (E.V.N.); (M.V.G.); (A.V.R.); (A.E.L.); (N.S.K.)
| | - Alexander V. Raikov
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia; (E.V.N.); (M.V.G.); (A.V.R.); (A.E.L.); (N.S.K.)
| | - Albert E. Lisitsa
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia; (E.V.N.); (M.V.G.); (A.V.R.); (A.E.L.); (N.S.K.)
| | - Gennadii A. Badun
- Department of Chemistry, Moscow State University, 119991 Moscow, Russia;
| | - Nadezhda S. Kudryasheva
- Biophysics Department, Siberian Federal University, 660041 Krasnoyarsk, Russia; (E.V.N.); (M.V.G.); (A.V.R.); (A.E.L.); (N.S.K.)
- Institute of Biophysics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia
| |
Collapse
|
18
|
Bondarenko LS, Kovel ES, Kydralieva KA, Dzhardimalieva GI, Illés E, Tombácz E, Kicheeva AG, Kudryasheva NS. Effects of Modified Magnetite Nanoparticles on Bacterial Cells and Enzyme Reactions. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1499. [PMID: 32751621 PMCID: PMC7466415 DOI: 10.3390/nano10081499] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 12/16/2022]
Abstract
Current paper presents biological effects of magnetite nanoparticles (MNPs). "Relations of MNP' characteristics (zeta-potential and hydrodynamic diameters) with effects on bacteria and their enzymatic reactions were the main focus.". Photobacterium phosphoreum and bacterial enzymatic reactions were chosen as bioassays. Three types of MNPs were under study: bare Fe3O4, Fe3O4 modified with 3-aminopropyltriethoxysilane (Fe3O4/APTES), and humic acids (Fe3O4/HA). Effects of the MNPs were studied at a low concentration range (< 2 mg/L) and attributed to availability and oxidative activity of Fe3+, high negative surface charge, and low hydrodynamic diameter of Fe3O4/HA, as well as higher Fe3+ content in suspensions of Fe3O4/HA. Low-concentration suspensions of bare Fe3O4 provided inhibitory effects in both bacterial and enzymatic bioassays, whereas the MNPs with modified surface (Fe3O4/APTES and Fe3O4/HA) did not affect the enzymatic activity. Under oxidative stress (i.e., in the solutions of model oxidizer, 1,4-benzoquinone), MNPs did not reveal antioxidant activity, moreover, Fe3O4/HA demonstrated additional inhibitory activity. The study contributes to the deeper understanding of a role of humic substances and silica in biogeochemical cycling of iron. Bioluminescence assays, cellular and enzymatic, can serve as convenient tools to evaluate bioavailability of Fe3+ in natural dispersions of iron-containing nanoparticles, e.g., magnetite, ferrihydrite, etc.
Collapse
Affiliation(s)
- Lyubov S. Bondarenko
- Moscow Aviation Institute (National Research University), 125993 Moscow, Russia; (L.S.B.); (K.A.K.); (G.I.D.)
| | - Ekaterina S. Kovel
- Institute of Physics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia
- Institute of Biophysics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia;
| | - Kamila A. Kydralieva
- Moscow Aviation Institute (National Research University), 125993 Moscow, Russia; (L.S.B.); (K.A.K.); (G.I.D.)
| | - Gulzhian I. Dzhardimalieva
- Moscow Aviation Institute (National Research University), 125993 Moscow, Russia; (L.S.B.); (K.A.K.); (G.I.D.)
- Institute of Problems of Chemical Physics RAS, 142432 Chernogolovka, Moscow Region, Russia
| | - Erzsébet Illés
- University of Szeged, H-6720 Szeged, Hungary; (E.I.); (E.T.)
| | - Etelka Tombácz
- University of Szeged, H-6720 Szeged, Hungary; (E.I.); (E.T.)
| | | | - Nadezhda S. Kudryasheva
- Institute of Biophysics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia;
- Siberian Federal University, 660041 Krasnoyarsk, Russia;
| |
Collapse
|
19
|
Suominen EN, Putus T, Atosuo J. Investigating the short- and long-term effects of antibacterial agents using a real-time assay based on bioluminescent E. coli-lux. Heliyon 2020; 6:e04232. [PMID: 32642580 PMCID: PMC7334431 DOI: 10.1016/j.heliyon.2020.e04232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/05/2020] [Accepted: 06/12/2020] [Indexed: 11/20/2022] Open
Abstract
We have previously established that the E. coli-lux assessment is a convenient tool for rapid measurements of the kinetical features of short-term toxicity caused by various factors. In this study, kinetic measurements of seven specifically acting model antibacterials (i.e., polymyxin B, chloramphenicol, nalidixic acid, kanamycin, deoxynivalenol, erythromycin and tetracycline) and two metals (AgNO3 and CdCl2) against E. coli-lux through a bioluminescence- and optical density-based real-time assay that combined short- and long-term toxicity assessments were performed. Bacteria were exposed to antibacterials and the effects were reported as the half-maximum effective concentration (EC50) after 30 min and 10 h. Regarding the 10-hour endpoints, all reference compounds, except deoxynivalenol, showed dose-response inhibition in the studied concentration range. The analysis of chloramphenicol, kanamycin, erythromycin, tetracycline and nalidixic acid clearly revealed the limitations of short-term inhibition tests. No significant differences were observed between the results obtained from luminescence inhibition and growth inhibition assays. The kinetical data from measurements provide differentiation between bacteriostatic and bactericidal mechanisms of various types of antibacterial agents. The combined assessment of short- and long-term effects reduces the risk of the underestimation of toxicity due to an inaccurate endpoint selection. The cost-efficient and fully automated E. coli-lux assessment technique may offer possibilities for high-throughput screening procedures.
Collapse
Affiliation(s)
- Eetu N. Suominen
- The Department of Biochemistry, Faculty of Science and Engineering, University of Turku, Finland
- Department of Occupational and Environmental Health, Faculty of Medicine, University of Turku, Finland
- Corresponding author.
| | - Tuula Putus
- Department of Occupational and Environmental Health, Faculty of Medicine, University of Turku, Finland
| | - Janne Atosuo
- The Department of Biochemistry, Faculty of Science and Engineering, University of Turku, Finland
| |
Collapse
|
20
|
Xing F, Xi H, Yu Y, Zhou Y. A sensitive, wide-ranging comprehensive toxicity indicator based on microbial fuel cell. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:134667. [PMID: 31759717 DOI: 10.1016/j.scitotenv.2019.134667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/21/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
An innovative indicator for toxicity detection based on microbial fuel cells, average current inhibition rate (ACIR) was proposed. It was applied to the toxicity evaluation of three typical specific pollutants in petrochemical wastewater including copper(II), 2,4-dichlorophenol (2,4-DCP) and pyridine. ACIR which considered the entire process of toxic effects was proved to be more sensitive and wide-ranging than the conventional indicators. The linear detection ranges were 0.3-100 mg/L of copper(II), 0.4-1000 mg/L of 2,4-DCP, and 0.1-1000 mg/L of pyridine. The median effective concentrations of the three toxicants were 34.32, 36.18 and above 1000 mg/L, respectively. By contrast, using a conventional indicator such as the voltage inhibition rate, the calculation results consistently change with the exposure time. Based on the response time, the toxicity will be difficult to distinguish under high concentrations. An analysis of the microbial community in anode chamber showed that electrogenic bacteria such as Geobacter and Arcobacter significantly decreased with 2,4-DCP and pyridine under all tested concentrations. A principal component analysis was conducted, the results of which showed that the microbial community shifted from left to right with the increase concentration of copper(II) and 2,4-DCP. An increase of ACIR was noticed to be in accordance with the reduction of electrogenic bacteria.
Collapse
Affiliation(s)
- Fei Xing
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Hongbo Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Yin Yu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| | - Yuexi Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| |
Collapse
|
21
|
Kusumahastuti DKA, Sihtmäe M, Kapitanov IV, Karpichev Y, Gathergood N, Kahru A. Toxicity profiling of 24 l-phenylalanine derived ionic liquids based on pyridinium, imidazolium and cholinium cations and varying alkyl chains using rapid screening Vibrio fischeri bioassay. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 172:556-565. [PMID: 30776578 DOI: 10.1016/j.ecoenv.2018.12.076] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/20/2018] [Accepted: 12/23/2018] [Indexed: 06/09/2023]
Abstract
A library of 24 pyridinium-, imidazolium-, and cholinium-based ionic liquids (ILs) with varying alkyl chain from C2 to C16 was toxicologically profiled using naturally luminescent marine bacteria Vibrio fischeri. The toxicity (30-min EC50) of studied ILs to Vibrio fischeri ranged from 7.82 µM (4.2 mg/L) (PyC12Phe) to 3096 µM (1227 mg/L) (ImidC2Phe), i.e. from "toxic" (EC50 1-10 mg/L) to "not harmful" (EC50 > 100 mg/L). Inhibition of the bacterial luminescence upon 30-min exposure to ILs correlated well with bacterial viability (exposure for 4 h). The toxicity of studied ILs was largely driven by the length of the alkyl chain (hydrophobicity) and not the type of cationic part of the IL: starting from C10 all the ILs irrespective of the cationic part proved "toxic". The toxicity of the studied ILs was increasing in parallel to their hydrophobicity up to log Kow = 1 (C8-C10) and then levelling up, being consistent with the previously obtained analogous data sets. The "cut-off" effect reported in this study for longer chain length members of the ILs series leads to the "limit" toxicity level for this type of ILs to be ca. 8 mM. Two open-access online tools (www.molinspiration.com and www.vcclab.org) have been applied for the calculation of the Kow values for the 24 ILs reported in this study and 21 ILs reported in the literature. This lead to plotting two nonlinear monotonic correlations between the values of experimental log (1/EC50) and calculated log Kow. The limitation of the online tools and an effect of the ILs structure on the "cut-off" effect have been discussed. The challenge of developing low microbial toxicity surface active ILs remains a significant task to overcome. Our results shed light on the new approaches for designing environmentally benign ILs and functional surfactants. As the hydrophobicity of the ILs significantly correlated with the toxicity, the Vibrio fischeri assay could be considered a powerful tool in providing toxicity data for building and evaluating the QSAR toxicity models for ILs.
Collapse
Affiliation(s)
- Dewi K A Kusumahastuti
- ERA Chair of Green Chemistry, Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia; Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia; Department of Chemistry, Satya Wacana Christian University, Salatiga 50711, Indonesia
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia
| | - Illia V Kapitanov
- ERA Chair of Green Chemistry, Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia
| | - Yevgen Karpichev
- ERA Chair of Green Chemistry, Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia
| | - Nicholas Gathergood
- ERA Chair of Green Chemistry, Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn 12618, Estonia.
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia; Estonian Academy of Sciences, Kohtu 6, Tallinn 10130, Estonia.
| |
Collapse
|
22
|
Bondarenko OM, Sihtmäe M, Kuzmičiova J, Ragelienė L, Kahru A, Daugelavičius R. Plasma membrane is the target of rapid antibacterial action of silver nanoparticles in Escherichia coli and Pseudomonas aeruginosa. Int J Nanomedicine 2018; 13:6779-6790. [PMID: 30498344 PMCID: PMC6207270 DOI: 10.2147/ijn.s177163] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction Silver nanoparticles (AgNP) are widely used in consumer products and in medicine, mostly due to their excellent antimicrobial properties. One of the generally accepted antibacterial mechanisms of AgNP is their efficient contact with cells and dissolution in the close vicinity of bacterial cell envelope. Yet, the primary mechanism of cell wall damage and the events essential for bactericidal action of AgNP are not elucidated. Materials and methods In this study we used a combination of various assays to differentiate the adverse effects of AgNP on bacterial cell envelope: outer membrane (OM) and plasma membrane (PM). Results We showed that PM was the main target of AgNP in gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa: AgNP depolarized PM, induced the leakage of the intracellular K+, and inhibited cellular respiration. The results of bacterial bioluminescence inhibition assay in combination with AgNP dissolution and oxidation assays demonstrated that the adverse effects of AgNP occurred at concentrations 7–160 µM. These toxic effects occurred already within the first few seconds of contact of bacteria and AgNP and were driven by dissolved Ag+ ions targeting bacterial PM. However, the irreversible inhibition of bacterial growth detected after 1-hour exposure occurred at 40 µM AgNP for P. aeruginosa and at 320 µM AgNP for E. coli. In contrast to effects on PM, AgNP and Ag+ ions had no significant effect on the permeability and integrity of bacterial OM, implying that AgNP indeed targeted mainly PM via dissolved Ag+ ions. Conclusion AgNP exhibited antibacterial properties via rapid release of Ag+ ions targeting the PM and not the OM of gram-negative bacteria.
Collapse
Affiliation(s)
- Olesja M Bondarenko
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia,
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia,
| | - Julia Kuzmičiova
- Department of Biochemistry, Vytautas Magnus University, Kaunas LT-44404, Lithuania
| | - Lina Ragelienė
- Department of Biochemistry, Vytautas Magnus University, Kaunas LT-44404, Lithuania
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Tallinn 12618, Estonia, .,Estonian Academy of Sciences, Tallinn 10130, Estonia
| | | |
Collapse
|
23
|
Kurvet I, Juganson K, Vija H, Sihtmäe M, Blinova I, Syvertsen-Wiig G, Kahru A. Toxicity of Nine (Doped) Rare Earth Metal Oxides and Respective Individual Metals to Aquatic Microorganisms Vibrio fischeri and Tetrahymena thermophila. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E754. [PMID: 28773114 PMCID: PMC5551797 DOI: 10.3390/ma10070754] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/13/2017] [Accepted: 06/30/2017] [Indexed: 01/31/2023]
Abstract
Despite the increasing use of rare earth elements (REEs) and oxides (REOs) in various technologies, the information on their ecotoxicological hazard is scarce. Here, the effects of La3+, Ce3+, Pr3+, Nd3+, Gd3+, CeO₂, and eight doped REOs to marine bacteria Vibrio fischeri and freshwater protozoa Tetrahymena thermophila were studied in parallel with REO dopant metals (Co2+, Fe3+, Mn2+, Ni2+, Sr2+). The highest concentrations of REOs tested were 100 mg/L with protozoa in deionized water and 500 mg/L with bacteria in 2% NaCl. Although (i) most REOs produced reactive oxygen species; (ii) all studied soluble REEs were toxic to bacteria (half-effective concentration, EC50 3.5-21 mg metal/L; minimal bactericidal concentration, MBC 6.3-63 mg/L) and to protozoa (EC50 28-42 mg/L); and (iii) also some dopant metals (Ni2+, Fe3+) proved toxic (EC50 ≤ 3 mg/L), no toxicity of REOs to protozoa (EC50 > 100 mg/L) and bacteria (EC50 > 500 mg/L; MBC > 500 mg/L) was observed except for La₂NiO₄ (MBC 25 mg/L). According to kinetics of V. fischeri bioluminescence, the toxicity of REEs was triggered by disturbing cellular membrane integrity. Fortunately, as REEs and REOs are currently produced in moderate amounts and form in the environment insoluble salts and/or oxides, they apparently present no harm to aquatic bacteria and protozoa.
Collapse
Affiliation(s)
- Imbi Kurvet
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | - Katre Juganson
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
- School of Science, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
| | - Heiki Vija
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | - Irina Blinova
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | | | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
- Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia.
| |
Collapse
|
24
|
Maksimova AV, Kuznetsova MV, Demakov VA. The impact of synthetic nitriles on the morphology and viability of some bacterial species. BIOL BULL+ 2017. [DOI: 10.1134/s106235901605006x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
25
|
Masner P, Javůrková B, Bláha L. Rapid in situ toxicity testing with luminescent bacteria Photorhabdus luminescens and Vibrio fischeri adapted to a small portable luminometer. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3748-3758. [PMID: 27888485 DOI: 10.1007/s11356-016-8096-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 11/11/2016] [Indexed: 06/06/2023]
Abstract
The present study demonstrates development of a rapid testing protocol based on a small portable luminometer using flash kinetic assessment of bacterial bioluminescence. The laboratory comparisons based on six model organic toxicants and two metals showed significant correlations between responses of freshwater bacteria Photorhabdus luminescens and standard marine bacterial species Vibrio fisheri. While P. luminescens was less sensitive in standard arrangements, the responses of both organisms were comparable in the newly introduced portable luminometer setup. The applicability and reproducibility of the portable luminometer protocol was further demonstrated in the assessment of 43 European wastewater effluents that were simultaneously tested for toxicity and analysed for 150 organic and 20 inorganic contaminants grouped into 13 major chemical classes. Clear association between the toxic responses in both compared bacterial species and the elevated levels of inorganic compounds (toxic metals), chlorophenols and benzotriazole anticorrosives was observed. The new protocol with a portable luminometer provides a fast (30 s) response and may be used as a tool for rapid in situ toxicity evaluation of freshwater environmental samples such as effluents.
Collapse
Affiliation(s)
- Petr Masner
- Faculty of Science, RECETOX, Masaryk University, Kamenice 5, 62500, Brno, Czech Republic
| | - Barbora Javůrková
- Faculty of Science, RECETOX, Masaryk University, Kamenice 5, 62500, Brno, Czech Republic
| | - Luděk Bláha
- Faculty of Science, RECETOX, Masaryk University, Kamenice 5, 62500, Brno, Czech Republic.
| |
Collapse
|
26
|
Tan J, Kan N, Wang W, Ling J, Qu G, Jin J, Shao Y, Liu G, Chen H. Construction of 2,4,6-Trinitrotoluene Biosensors with Novel Sensing Elements from Escherichia coli K-12 MG1655. Cell Biochem Biophys 2017; 72:417-28. [PMID: 25561288 DOI: 10.1007/s12013-014-0481-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Detection of 2,4,6-trinitrotoluene (TNT) has been extensively studied since it is a common explosive filling for landmines, posing significant threats to the environment and human safety. The rapid advances in synthetic biology give new hope to detect such toxic and hazardous compounds in a more sensitive and safe way. Biosensor construction anticipates finding sensing elements able to detect TNT. As TNT can induce some physiological responses in E. coli, it may be useful to define the sensing elements from E. coli to detect TNT. An E. coli MG1655 genomic promoter library containing nearly 5,400 elements was constructed. Five elements, yadG, yqgC, aspC, recE, and topA, displayed high sensing specificity to TNT and its indicator compounds 1,3-DNB and 2,4-DNT. Based on this, a whole cell biosensor was constructed using E. coli, in which green fluorescent protein was positioned downstream of the five sensing elements via genetic fusion. The threshold value, detection time, EC200 value, and other aspects of five sensing elements were determined and the minimum responding concentration to TNT was 4.75 mg/L. According to the synthetic biology, the five sensing elements enriched the reservoir of TNT-sensing elements, and provided a more applicable toolkit to be applied in genetic routes and live systems of biosensors in future.
Collapse
Affiliation(s)
- Junjie Tan
- Beijing Institute of Biotechnology, Beijing, China
| | - Naipeng Kan
- College of Life Sciences, Anhui University, Hefei, China
| | - Wei Wang
- College of Life Sciences, Jilin University, Changchun, China
| | - Jingyi Ling
- Beijing Institute of Biotechnology, Beijing, China
| | - Guolong Qu
- Beijing Institute of Biotechnology, Beijing, China
| | - Jing Jin
- ShenYang Pharmaceutical University, Shenyang, China
| | - Yu Shao
- College of Life Sciences, Anhui University, Hefei, China
| | - Gang Liu
- Beijing Institute of Biotechnology, Beijing, China.
| | - Huipeng Chen
- Beijing Institute of Biotechnology, Beijing, China.
| |
Collapse
|
27
|
Bondarenko OM, Heinlaan M, Sihtmäe M, Ivask A, Kurvet I, Joonas E, Jemec A, Mannerström M, Heinonen T, Rekulapelly R, Singh S, Zou J, Pyykkö I, Drobne D, Kahru A. Multilaboratory evaluation of 15 bioassays for (eco)toxicity screening and hazard ranking of engineered nanomaterials: FP7 project NANOVALID. Nanotoxicology 2016; 10:1229-42. [PMID: 27259032 PMCID: PMC5030619 DOI: 10.1080/17435390.2016.1196251] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Within EU FP7 project NANOVALID, the (eco)toxicity of 7 well-characterized engineered nanomaterials (NMs) was evaluated by 15 bioassays in 4 laboratories. The highest tested nominal concentration of NMs was 100 mg/l. The panel of the bioassays yielded the following toxicity order: Ag > ZnO > CuO > TiO2 > MWCNTs > SiO2 > Au. Ag, ZnO and CuO proved very toxic in the majority of assays, assumingly due to dissolution. The latter was supported by the parallel analysis of the toxicity of respective soluble metal salts. The most sensitive tests/species were Daphnia magna (towards Ag NMs, 24-h EC50 = 0.003 mg Ag/l), algae Raphidocelis subcapitata (ZnO and CuO, 72-h EC50 = 0.14 mg Zn/l and 0.7 mg Cu/l, respectively) and murine fibroblasts BALB/3T3 (CuO, 48-h EC50 = 0.7 mg Cu/l). MWCNTs showed toxicity only towards rat alveolar macrophages (EC50 = 15.3 mg/l) assumingly due to high aspect ratio and TiO2 towards R. subcapitata (EC50 = 6.8 mg Ti/l) due to agglomeration of TiO2 and entrapment of algal cells. Finally, we constructed a decision tree to select the bioassays for hazard ranking of NMs. For NM testing, we recommend a multitrophic suite of 4 in vitro (eco)toxicity assays: 48-h D. magna immobilization (OECD202), 72-h R. subcapitata growth inhibition (OECD201), 30-min Vibrio fischeri bioluminescence inhibition (ISO2010) and 48-h murine fibroblast BALB/3T3 neutral red uptake in vitro (OECD129) representing crustaceans, algae, bacteria and mammalian cells, respectively. Notably, our results showed that these assays, standardized for toxicity evaluation of “regular” chemicals, proved efficient also for shortlisting of hazardous NMs. Additional assays are recommended for immunotoxicity evaluation of high aspect ratio NMs (such as MWCNTs).
Collapse
Affiliation(s)
- Olesja M Bondarenko
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| | - Margit Heinlaan
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| | - Mariliis Sihtmäe
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| | - Angela Ivask
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| | - Imbi Kurvet
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| | - Elise Joonas
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia .,b Faculty of Science and Technology , Institute of Ecology and Earth Sciences, Tartu University , Tartu , Estonia
| | - Anita Jemec
- c Biotechnical Faculty , University of Ljubljana , Ljubljana , Slovenia
| | - Marika Mannerström
- d The Finnish Centre for Alternative Methods (FICAM) , School of Medicine, University of Tampere , Tampere , Finland
| | - Tuula Heinonen
- d The Finnish Centre for Alternative Methods (FICAM) , School of Medicine, University of Tampere , Tampere , Finland
| | - Rohit Rekulapelly
- e The Centre for Cellular & Molecular Biology, Habsiguda , Hyderabad, Telangana , India , and
| | - Shashi Singh
- e The Centre for Cellular & Molecular Biology, Habsiguda , Hyderabad, Telangana , India , and
| | - Jing Zou
- f Hearing and Balance Research Unit , Field of Oto-Laryngology, School of Medicine, University of Tampere , Tampere , Finland
| | - Ilmari Pyykkö
- f Hearing and Balance Research Unit , Field of Oto-Laryngology, School of Medicine, University of Tampere , Tampere , Finland
| | - Damjana Drobne
- c Biotechnical Faculty , University of Ljubljana , Ljubljana , Slovenia
| | - Anne Kahru
- a Laboratory of Environmental Toxicology , National Institute of Chemical Physics and Biophysics , Tallinn , Estonia
| |
Collapse
|
28
|
Cornall A, Rose A, Streten C, McGuinness K, Parry D, Gibb K. Molecular screening of microbial communities for candidate indicators of multiple metal impacts in marine sediments from northern Australia. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2016; 35:468-484. [PMID: 26274631 DOI: 10.1002/etc.3205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 01/29/2015] [Accepted: 08/11/2015] [Indexed: 06/04/2023]
Abstract
Coastal sediments accumulate metals from anthropogenic sources and as a consequence industry is required to monitor sediment health. The total concentration of a metal does not necessarily reflect its potential toxicity or biological impact, so biological assessment tools are useful for monitoring. Rapid biological assessment tools sensitive enough to detect relatively small increases in metal concentrations would provide early warning of future ecosystem impact. The authors investigated in situ populations of Archaea and Bacteria as potential tools for rapid biological assessment in sediment at 4 northern Australian coastal locations over 2 yr, in both wet and dry seasons. The 1 M HCl-extractable concentrations of metals in sediment were measured, and Archaeal and Bacterial community profiles were obtained by next-generation sequencing of sediment deoxyribonucleic acid (DNA). Species response curves were used to identify several taxonomic groups with potential as biological indicators of metal impact. Spatial variation, sediment grain size, water depth, and dissolved oxygen also correlated with microbial population shifts. Seasonal variation was less important than geographic location. Metal-challenge culture trials supported the identification of metal-resistant and -sensitive taxa. In situ Archaea and Bacteria are potentially sensitive indicators for changes in bioavailable concentrations of metals; however, the complexity of the system suggests it is important to identify metal-specific functional genes that may be informed by these sequencing surveys, and thus provide a useful addition to identity-based assays.
Collapse
Affiliation(s)
- Alyssa Cornall
- Charles Darwin University, Darwin, Northern Territory, Australia
| | - Alea Rose
- Charles Darwin University, Darwin, Northern Territory, Australia
| | - Claire Streten
- Charles Darwin University, Darwin, Northern Territory, Australia
- Australian Institute of Marine Science, Darwin, Northern Territory, Australia
| | - Keith McGuinness
- Charles Darwin University, Darwin, Northern Territory, Australia
| | - David Parry
- Charles Darwin University, Darwin, Northern Territory, Australia
- Australian Institute of Marine Science, Darwin, Northern Territory, Australia
| | - Karen Gibb
- Charles Darwin University, Darwin, Northern Territory, Australia
| |
Collapse
|
29
|
Zhao W, Lorenz N, Jung K, Sieber SA. Natürliche Fimbrolide inhibieren Autoinduktorbiosynthese und Luziferaseaktivität und unterdrücken damit die Biolumineszenz inVibrio. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Weining Zhao
- Center for integrated Protein Science Munich (CiPSM) am Department für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Nicola Lorenz
- Center for integrated Protein Science Munich (CiPSM) am Department für Biologie; Ludwig-Maximilians-Universität München; Großhaderner Straße 2-4 82152 Martinsried Deutschland
| | - Kirsten Jung
- Center for integrated Protein Science Munich (CiPSM) am Department für Biologie; Ludwig-Maximilians-Universität München; Großhaderner Straße 2-4 82152 Martinsried Deutschland
| | - Stephan A. Sieber
- Center for integrated Protein Science Munich (CiPSM) am Department für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| |
Collapse
|
30
|
Zhao W, Lorenz N, Jung K, Sieber SA. Fimbrolide Natural Products Disrupt Bioluminescence of Vibrio By Targeting Autoinducer Biosynthesis and Luciferase Activity. Angew Chem Int Ed Engl 2015; 55:1187-91. [PMID: 26609793 DOI: 10.1002/anie.201508052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 12/14/2022]
Abstract
Vibrio is a model organism for the study of quorum sensing (QS) signaling and is used to identify QS-interfering drugs. Naturally occurring fimbrolides are important tool compounds known to affect QS in various organisms; however, their cellular targets have so far remained elusive. Here we identify the irreversible fimbrolide targets in the proteome of living V. harveyi and V. campbellii via quantitative mass spectrometry utilizing customized probes. Among the major hits are two protein targets with essential roles in Vibrio QS and bioluminescence. LuxS, responsible for autoinducer 2 biosynthesis, and LuxE, a subunit of the luciferase complex, were both covalently modified at their active-site cysteines leading to inhibition of activity. The identification of LuxE unifies previous reports suggesting inhibition of bioluminescence downstream of the signaling cascade and thus contributes to a better mechanistic understanding of these QS tool compounds.
Collapse
Affiliation(s)
- Weining Zhao
- Munich Center for integrated Protein Science (CiPSM) at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Nicola Lorenz
- Munich Center for integrated Protein Science (CiPSM) at the Department of Biology I, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, 82152, Martinsried, Germany
| | - Kirsten Jung
- Munich Center for integrated Protein Science (CiPSM) at the Department of Biology I, Ludwig-Maximilians-Universität München, Großhaderner Strasse 2-4, 82152, Martinsried, Germany
| | - Stephan A Sieber
- Munich Center for integrated Protein Science (CiPSM) at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.
| |
Collapse
|
31
|
Jagmann N, Henke SF, Philipp B. Cells of Escherichia coli are protected against severe chemical stress by co-habiting cell aggregates formed by Pseudomonas aeruginosa. Appl Microbiol Biotechnol 2015; 99:8285-94. [PMID: 26066844 DOI: 10.1007/s00253-015-6726-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 05/21/2015] [Accepted: 05/25/2015] [Indexed: 12/17/2022]
Abstract
Bacterial cells within biofilms and cell aggregates show increased resistance against chemical stress compared with suspended cells. It is not known whether bacteria that co-habit biofilms formed by other bacteria also acquire such resistance. This scenario was investigated in a proof-of-principle experiment with Pseudomonas aeruginosa strain PAO1 as cell aggregate-forming bacterium and Escherichia coli strain MG1655 as potential co-habiting bacterium equipped with an inducible bioluminescence system. Cell aggregation of strain PAO1 can be induced by the toxic detergent sodium dodecyl sulfate (SDS). In single cultures of strain MG1655, bioluminescence was inhibited by the protonophor carbonylcyanide-m-chlorophenylhydrazone (CCCP) but the cells were still viable. By applying CCCP and SDS together, cells of strain MG1655 lost their bioluminescence and viability indicating the importance of energy-dependent resistance mechanisms against SDS. In co-suspensions with strain PAO1, bioluminescence of strain MG1655 was sustained in the presence of SDS and CCCP. Image analysis showed that bioluminescent cells were located in cell aggregates formed by strain PAO1. Thus, cells of strain MG1655 that co-habited cell aggregates formed by strain PAO1 were protected against a severe chemical stress that was lethal to them in single cultures. Co-habiting could lead to increased survival of pathogens in clinical settings and could be employed in biotechnological applications involving toxic milieus.
Collapse
Affiliation(s)
- Nina Jagmann
- Institut für Molekulare Mikrobiologie und Biotechnologie, Westfälische Wilhelms-Universität (WWU) Münster, Corrensstr. 3, 48149, Münster, Germany
| | | | | |
Collapse
|
32
|
Kudryasheva NS, Rozhko TV. Effect of low-dose ionizing radiation on luminous marine bacteria: radiation hormesis and toxicity. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2015; 142:68-77. [PMID: 25644753 DOI: 10.1016/j.jenvrad.2015.01.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/12/2015] [Accepted: 01/12/2015] [Indexed: 06/04/2023]
Abstract
The paper summarizes studies of effects of alpha- and beta-emitting radionuclides (americium-241, uranium-235+238, and tritium) on marine microorganisms under conditions of chronic low-dose irradiation in aqueous media. Luminous marine bacteria were chosen as an example of these microorganisms; bioluminescent intensity was used as a tested physiological parameter. Non-linear dose-effect dependence was demonstrated. Three successive stages in the bioluminescent response to americium-241 and tritium were found: 1--absence of effects (stress recognition), 2--activation (adaptive response), and 3--inhibition (suppression of physiological function, i.e. radiation toxicity). The effects were attributed to radiation hormesis phenomenon. Biological role of reactive oxygen species, secondary products of the radioactive decay, is discussed. The study suggests an approach to evaluation of non-toxic and toxic stages under conditions of chronic radioactive exposure.
Collapse
Affiliation(s)
- N S Kudryasheva
- Institute of Biophysics SB RAS, Akademgorodok 50, 660036, Krasnoyarsk, Russia; Siberian Federal University, Svobodny 79, 660041, Krasnoyarsk, Russia.
| | - T V Rozhko
- Siberian Federal University, Svobodny 79, 660041, Krasnoyarsk, Russia; Krasnoyarsk State Medical Academy, P. Zheleznyaka 1, 660022, Krasnoyarsk, Russia
| |
Collapse
|
33
|
Tong F, Zhao Y, Gu X, Gu C, Lee CCC. Joint toxicity of tetracycline with copper(II) and cadmium(II) to Vibrio fischeri: effect of complexation reaction. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:346-355. [PMID: 25398505 DOI: 10.1007/s10646-014-1383-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
Co-contamination of antibiotic and heavy metals commonly occurs in the environment. Tetracycline (TC), a common antibiotic, can behave as an efficient organic ligand to complex with cations. In this paper, the joint toxicity of TC with two commonly existing metals, copper(II) and cadmium(II), towards a luminescent bacteria, Vibrio fischeri, are investigated. Results showed that coexistence of TC and Cu(II) showed a significant antagonistic effect, while TC and Cd(II) showed a synergistic effect. The aqueous speciation of TC with two metal cations was calculated using a chemical equilibrium software Visual MINTEQ and results indicated that a strong complexation exist between TC and Cu(II), while much weaker interaction between TC and Cd(II). Traditional joint toxicity prediction model based on independent action failed to predict the combined toxicity of TC with metals. A new method based on speciation calculation was used to evaluate the joint toxicity of ligands and cations. It is assumed that the metal-ligand complexes are non-toxic to V. fischeri and the joint toxicity is determined by the sum of toxic unit of free metal-ions and free organic ligands. It explained the joint toxicity of the mixed systems reasonably well. Meanwhile, citric acid (CA) and fulvic acid (FA) were also introduced in this study to provide a benchmark comparison with TC. Results showed it is also valid for mixed systems of CA and FA with metals except for the Cd-CA mixture.
Collapse
Affiliation(s)
- Fei Tong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | | | | | | | | |
Collapse
|
34
|
Ma XY, Wang XC, Ngo HH, Guo W, Wu MN, Wang N. Bioassay based luminescent bacteria: interferences, improvements, and applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 468-469:1-11. [PMID: 23999158 DOI: 10.1016/j.scitotenv.2013.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 08/08/2013] [Accepted: 08/10/2013] [Indexed: 06/02/2023]
Abstract
Due to the merits of being time-saving, cost effective and simple operation, the luminescent bacteria toxicity assay (LBTA) has been widely used for environmental pollution monitoring. Based on numerous studies since 2007, this critical review aims to give an overview on the mechanisms, developments and applications of LBTA. Firstly, based on the introduction of the mechanisms of LBTA, this review shows the interferences from the characteristics of testing samples (such as inorganic nutrients, color, turbidity) and summarizes the improvements on pretreatment method, test methods and test systems in recent years. Regarding the factors that affect the toxicity prediction of single chemicals, the correlation between the toxicity index expressed as median effective concentration (EC50) and characters (such as Kow, the alkyl chain length, the anion and the cation) of known chemicals, especially the emerging ionic liquids (ILs), were given an in-depth discussion. The models for predicting the joint effect of mixtures to luminescent bacteria were also presented. For the factors that affect the toxicity of actual waters, the correlation of toxicity of actual samples to luminescent bacteria and their conventional indexes were discussed. Comparing the sensitivity of the LBTA with other bioassays could indicate the feasibility of the LBTA applied on specific samples. The summary on the application of LBTA to environmental samples has been made to find the future research direction.
Collapse
Affiliation(s)
- Xiaoyan Y Ma
- Key Lab of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | | | | | | | | | | |
Collapse
|
35
|
Evaluation of the ecotoxicity of pollutants with bioluminescent microorganisms. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2014; 145:65-135. [PMID: 25216953 DOI: 10.1007/978-3-662-43619-6_3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This chapter deals with the use of bioluminescent microorganisms in environmental monitoring, particularly in the assessment of the ecotoxicity of pollutants. Toxicity bioassays based on bioluminescent microorganisms are an interesting complement to classical toxicity assays, providing easiness of use, rapid response, mass production, and cost effectiveness. A description of the characteristics and main environmental applications in ecotoxicity testing of naturally bioluminescent microorganisms, covering bacteria and eukaryotes such as fungi and dinoglagellates, is reported in this chapter. The main features and applications of a wide variety of recombinant bioluminescent microorganisms, both prokaryotic and eukaryotic, are also summarized and critically considered. Quantitative structure-activity relationship models and hormesis are two important concepts in ecotoxicology; bioluminescent microorganisms have played a pivotal role in their development. As pollutants usually occur in complex mixtures in the environment, the use of both natural and recombinant bioluminescent microorganisms to assess mixture toxicity has been discussed. The main information has been summarized in tables, allowing quick consultation of the variety of luminescent organisms, bioluminescence gene systems, commercially available bioluminescent tests, environmental applications, and relevant references.
Collapse
|
36
|
Dissolution of silver nanowires and nanospheres dictates their toxicity to Escherichia coli. BIOMED RESEARCH INTERNATIONAL 2013; 2013:819252. [PMID: 24024212 PMCID: PMC3762159 DOI: 10.1155/2013/819252] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/01/2013] [Accepted: 07/08/2013] [Indexed: 11/18/2022]
Abstract
Silver nanoparticles are extensively used in antibacterial applications. However, the mechanisms of their antibacterial action are not yet fully explored. We studied the solubility-driven toxicity of 100 × 6100 nm (mean primary diameter × length) silver nanowires (NWs) to recombinant bioluminescent Escherichia coli as a target representative of enteric pathogens. The bacteria were exposed to silver nanostructures in water to exclude the speciation-driven alterations. Spherical silver nanoparticles (83 nm mean primary size) were used as a control for the effect of NPs shape. Toxicity of both Ag NWs and spheres to E. coli was observed at similar nominal concentrations: the 4h EC50 values, calculated on the basis of inhibition of bacterial bioluminescence, were 0.42 ± 0.06 and 0.68 ± 0.01 mg Ag/L, respectively. Dissolution and bioavailability of Ag from NWs and nanospheres, analyzed with AAS or Ag-sensor bacteria, respectively, suggested that the toxic effects were caused by solubilized Ag+ ions. Moreover, the antibacterial activities of Ag NWs suspension and its ultracentrifuged particle-free supernatant were equal. The latter indicated that the toxic effects of ~80–100 nm Ag nanostructures to Escherichia coli were solely dependent on their dissolution and no shape-induced/related effects were observed. Yet, additional nanospecific effects could come into play in case of smaller nanosilver particles.
Collapse
|
37
|
Bondarenko O, Juganson K, Ivask A, Kasemets K, Mortimer M, Kahru A. Toxicity of Ag, CuO and ZnO nanoparticles to selected environmentally relevant test organisms and mammalian cells in vitro: a critical review. Arch Toxicol 2013; 87:1181-200. [PMID: 23728526 PMCID: PMC3677982 DOI: 10.1007/s00204-013-1079-4] [Citation(s) in RCA: 667] [Impact Index Per Article: 60.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 05/08/2013] [Indexed: 11/26/2022]
Abstract
Nanoparticles (NPs) of copper oxide (CuO), zinc oxide (ZnO) and especially nanosilver are intentionally used to fight the undesirable growth of bacteria, fungi and algae. Release of these NPs from consumer and household products into waste streams and further into the environment may, however, pose threat to the 'non-target' organisms, such as natural microbes and aquatic organisms. This review summarizes the recent research on (eco)toxicity of silver (Ag), CuO and ZnO NPs. Organism-wise it focuses on key test species used for the analysis of ecotoxicological hazard. For comparison, the toxic effects of studied NPs toward mammalian cells in vitro were addressed. Altogether 317 L(E)C50 or minimal inhibitory concentrations (MIC) values were obtained for algae, crustaceans, fish, bacteria, yeast, nematodes, protozoa and mammalian cell lines. As a rule, crustaceans, algae and fish proved most sensitive to the studied NPs. The median L(E)C50 values of Ag NPs, CuO NPs and ZnO NPs (mg/L) were 0.01, 2.1 and 2.3 for crustaceans; 0.36, 2.8 and 0.08 for algae; and 1.36, 100 and 3.0 for fish, respectively. Surprisingly, the NPs were less toxic to bacteria than to aquatic organisms: the median MIC values for bacteria were 7.1, 200 and 500 mg/L for Ag, CuO and ZnO NPs, respectively. In comparison, the respective median L(E)C50 values for mammalian cells were 11.3, 25 and 43 mg/L. Thus, the toxic range of all the three metal-containing NPs to target- and non-target organisms overlaps, indicating that the leaching of biocidal NPs from consumer products should be addressed.
Collapse
Affiliation(s)
- Olesja Bondarenko
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Katre Juganson
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Department of Chemistry, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Angela Ivask
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Monika Mortimer
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Aquatic Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Faculty of Sciences, University of Geneva, 10 route de Suisse, 1290 Versoix, Switzerland
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| |
Collapse
|
38
|
Chan AC, Ager D, Thompson IP. Resolving the mechanism of bacterial inhibition by plant secondary metabolites employing a combination of whole-cell biosensors. J Microbiol Methods 2013; 93:209-17. [PMID: 23566822 DOI: 10.1016/j.mimet.2013.03.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 03/26/2013] [Accepted: 03/26/2013] [Indexed: 11/30/2022]
Abstract
Tightening regulations regarding the use of biocides have stimulated interest in investigating alternatives to current antimicrobial strategies. Plant essential oils and their constituent compounds are promising candidates as novel antimicrobial agents because of their excellent ability in killing microbes while being non-toxic to humans at antimicrobially-active concentrations. Allyl isothiocyanate (AIT), carvacrol, cinnamaldehyde (CNAD), citral, and thymol were investigated for their antibacterial activity against Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. The five compounds were screened via disc diffusion assay and broth microdilution method, by which inhibition zone diameters, minimum inhibitory concentrations (MICs), and minimum bactericidal concentrations (MBCs) were determined. AIT and CNAD displayed the greatest inhibitory effects against all species tested, with AIT yielding MICs of 156.25mg/L and MBCs of 156.25 to 312.5mg/L, and CNAD yielding MICs of 78.125 to 156.25mg/L and MBCs of 78.125 to 312.5mg/L. Based on these results, AIT and CNAD were selected for closer examination of their toxic effects. Two complementary bioluminescence-based bacterial biosensors, E. coli HB101_pUCD607_lux and Acinetobacter baylyi ADP1_recA_lux, were employed to examine the dose-response relationships and mechanism of action of AIT and CNAD. This is the first reported study to employ a lux-based biosensor assay coupled with parallel plate count experiments to demonstrate that AIT and CNAD not only damaged cell membranes, but also disrupted cellular metabolism and energy production in bacteria. It is also the first to use genotoxicity-sensing whole-cell bioreporters to demonstrate that neither AIT nor CNAD induced expression of the universal DNA repair gene, recA. This suggests that AIT and CNAD were not genotoxic. As an antimicrobial agent, it is advantageous that the compound be genetically non-damaging so that toxicity towards higher multicellular organisms and resistance development can be minimized. Thus, AIT and CNAD may be of high value as novel antimicrobial agents.
Collapse
Affiliation(s)
- Andrea C Chan
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK.
| | | | | |
Collapse
|
39
|
Interactions of PLA2-s from Vipera lebetina, Vipera berus berus and Naja naja oxiana venom with platelets, bacterial and cancer cells. Toxins (Basel) 2013; 5:203-23. [PMID: 23348053 PMCID: PMC3640532 DOI: 10.3390/toxins5020203] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 01/16/2013] [Accepted: 01/17/2013] [Indexed: 12/21/2022] Open
Abstract
Secretory phospholipasesA2 (sPLA2s) form a large family of structurally related enzymes widespread in nature. Herein, we studied the inhibitory effects of sPLA2s from Vipera lebetina (VLPLA2), Vipera berus berus (VBBPLA2), and Naja naja oxiana (NNOPLA2) venoms on (i) human platelets, (ii) four different bacterial strains (gram-negative Escherichia coli and Vibrio fischeri; gram-positive Staphylococcus aureus and Bacillus subtilis) and (iii) five types of cancer cells (PC-3, LNCaP, MCF-7, K-562 and B16-F10) in vitro. sPLA2s inhibited collagen-induced platelet aggregation: VBBPLA2 IC50 = 0.054, VLPLA2 IC50 = 0.072, NNOPLA2 IC50 = 0.814 μM. p-Bromophenacylbromide-inhibited sPLA2 had no inhibitory action on platelets. 36.17 μM VBBPLA2 completely inhibited the growth of gram-positive Bacillus subtilis whereas no growth inhibition was observed towards gram-negative Escherichia coli. The inhibitory action of sPLA2s (~0.7 μM and ~7 μM) towards cancer cells depended on both venom and cell type. VBBPLA2 (7.2 μM) inhibited significantly the viability of K-562 cells and the cell death appeared apoptotic. The sPLA2s exhibited no inhibitory effect towards LNCaP cells and some effect (8%–20%) towards other cells. Thus, already sub-μM concentrations of sPLA2s inhibited collagen-induced platelet aggregation and from the current suite of studied svPLA2s and test cells, VBBPLA2 was the most growth inhibitory towards Bacillus subtilis and K-562 cells.
Collapse
|
40
|
A new, sensitive marine microalgal recombinant biosensor using luminescence monitoring for toxicity testing of antifouling biocides. Appl Environ Microbiol 2012; 79:631-8. [PMID: 23144143 DOI: 10.1128/aem.02688-12] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In this study, we propose the use of the marine green alga Ostreococcus tauri, the smallest free-living eukaryotic cell known to date, as a new luminescent biosensor for toxicity testing in the environment. Diuron and Irgarol 1051, two antifouling biocides commonly encountered in coastal waters, were chosen to test this new biosensor along with two degradation products of diuron. The effects of various concentrations of the antifoulants on four genetic constructs of O. tauri (based on genes involved in photosynthesis, cell cycle, and circadian clock) were compared using 96-well culture microplates and a luminometer to automatically measure luminescence over 3 days. This was compared to growth inhibition of O. tauri wild type under the same conditions. Luminescence appeared to be more sensitive than growth inhibition as an indicator of toxicity. Cyclin-dependent kinase (CDKA), a protein involved in the cell cycle, fused to luciferase (CDKA-Luc) was found to be the most sensitive of the biosensors, allowing an accurate determination of the 50% effective concentration (EC(50)) after only 2 days (diuron, 5.65 ± 0.44 μg/liter; Irgarol 1015, 0.76 ± 0.10 μg/liter). The effects of the antifoulants on the CDKA-Luc biosensor were then compared to growth inhibition in natural marine phytoplankton. The effective concentrations of diuron and Irgarol 1051 were found to be similar, indicating that this biosensor would be suitable as a reliable ecotoxicological test. The advantage of this biosensor over cell growth inhibition testing is that the process can be easily automated and could provide a high-throughput laboratory approach to perform short-term toxicity tests. The ability to genetically transform and culture recombinant O. tauri gives it huge potential for screening many other toxic compounds.
Collapse
|
41
|
Kelkar M, De A. Bioluminescence based in vivo screening technologies. Curr Opin Pharmacol 2012; 12:592-600. [PMID: 22954534 DOI: 10.1016/j.coph.2012.07.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 07/19/2012] [Accepted: 07/23/2012] [Indexed: 01/27/2023]
Abstract
Bioluminescence is the biologically active luminescence light producing event encountered in nature. In recent years several new screening methods utilizing bioluminescent cell-based biosensors have been designed demonstrating their utility towards dynamic monitoring of a variety of cellular functions. Because luciferase is unnatural to mammalian physiology, assays utilizing specific substrates to yield a luminescent signal are attractive and serve the purpose with high sensitivity and specificity. Often genetic or chemical modifications in different luciferase-substrate system in use have afforded new functionalities making these assays even more robust. Finally, in the evolving paradigm of molecular imaging, in vivo bioluminescence imaging (BLI) has evolved as a very attractive tool for interrogating human cellular biology in rodent models. In this short review we explore various bioluminescence screening strategies developed and analyze their scope in future drug screening processes.
Collapse
Affiliation(s)
- Madhura Kelkar
- Molecular Functional Imaging Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Sector 22, Kharghar, Navi Mumbai 410210, Maharashtra, India
| | | |
Collapse
|
42
|
Käkinen A, Bondarenko O, Ivask A, Kahru A. The effect of composition of different ecotoxicological test media on free and bioavailable copper from CuSO4 and CuO nanoparticles: comparative evidence from a Cu-selective electrode and a Cu-biosensor. SENSORS 2011; 11:10502-21. [PMID: 22346655 PMCID: PMC3274297 DOI: 10.3390/s111110502] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 10/20/2011] [Accepted: 10/31/2011] [Indexed: 01/09/2023]
Abstract
The analysis of (bio)available copper in complex environmental settings, including biological test media, is a challenging task. In this study, we demonstrated the potential of a recombinant Pseudomonas fluorescens-based biosensor for bioavailability analysis of CuSO4 and CuO nanoparticles (nano-CuO) in seventeen different ecotoxicological and microbiologial test media. In parallel, free Cu in these test media was analysed using Cu-ion selective electrode (Cu-ISE). In the case of CuSO4, both free and bioavailable Cu decreased greatly with increasing concentration of organics and phosphates in the tested media. A good correlation between free and bioavailable Cu was observed (r = 0.854, p < 0.01) indicating that the free Cu content in biological test media may be a reasonably good predictor for the toxicity of CuSO4. As a proof, it was demonstrated that when eleven EC50 values for CuSO4 from different organisms in different test media were normalized for the free Cu in these media, the difference in these EC50 values was decreased from 4 to 1.8 orders of magnitude. Thus, toxicity of CuSO4 to these organisms was attributed to the properties of the test media rather than to inherent differences in sensitivity between the test organisms. Differently from CuSO4, the amount of free and bioavailable Cu in nano-CuO spiked media was not significantly correlated with the concentration of organics in the test media. Thus, the speciation of nano-CuO in toxicological test systems was not only determined by the complexation of Cu ions but also by differential dissolution of nano-CuO in different test conditions leading to a new speciation equilibrium. In addition, a substantial fraction of nano-CuO that was not detectable by Cu-ISE (i.e., not present as free Cu-ions) was bioavailable to Cu-biosensor bacteria. Thus, in environmental hazard analysis of (nano) particulate materials, biosensor analysis may be more informative than other analytical techniques. Our results demonstrate that bacterial Cu-biosensors either in combination with other analytical/speciation techniques or on their own, may serve as a rapid (eco)toxicological screening method.
Collapse
Affiliation(s)
- Aleksandr Käkinen
- Laboratory of Molecular Genetics, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia; E-Mails: (A.K.); (O.B.)
- Department of Chemical and Materials Technology, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia
| | - Olesja Bondarenko
- Laboratory of Molecular Genetics, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia; E-Mails: (A.K.); (O.B.)
- Department of Gene Technology, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia
| | - Angela Ivask
- Laboratory of Molecular Genetics, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia; E-Mails: (A.K.); (O.B.)
- Authors to whom correspondence should be addressed; E-Mails: (A.I.); (A.K.); Tel.: +372-6-398-382 (A.I.); +372-6-398-373 (A.K.); Fax: +372-6-398-382 (A.I.); +372-6-398-382 (A.K.)
| | - Anne Kahru
- Laboratory of Molecular Genetics, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia; E-Mails: (A.K.); (O.B.)
- Authors to whom correspondence should be addressed; E-Mails: (A.I.); (A.K.); Tel.: +372-6-398-382 (A.I.); +372-6-398-373 (A.K.); Fax: +372-6-398-382 (A.I.); +372-6-398-382 (A.K.)
| |
Collapse
|