1
|
Li H, Xu H. Mechanisms of bacterial resistance to environmental silver and antimicrobial strategies for silver: A review. Environ Res 2024; 248:118313. [PMID: 38280527 DOI: 10.1016/j.envres.2024.118313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
The good antimicrobial properties of silver make it widely used in food, medicine, and environmental applications. However, the release and accumulation of silver-based antimicrobial agents in the environment is increasing with the extensive use of silver-based antimicrobials, and the prevalence of silver-resistant bacteria is increasing. To prevent the emergence of superbugs, it is necessary to exercise rational and strict control over drug use. The mechanism of bacterial resistance to silver has not been fully elucidated, and this article provides a review of the progress of research on the mechanism of bacterial resistance to silver. The results indicate that bacterial resistance to silver can occur through inducing silver particles aggregation and Ag+ reduction, inhibiting silver contact with and entry into cells, efflux of silver particles and Ag+ in cells, and activation of damage repair mechanisms. We propose that the bacterial mechanism of silver resistance involves a combination of interrelated systems. Finally, we discuss how this information can be used to develop the next generation of silver-based antimicrobials and antimicrobial therapies. And some antimicrobial strategies are proposed such as the "Trojan Horse" - camouflage, using efflux pump inhibitors to reduce silver efflux, working with "minesweeper", immobilization of silver particles.
Collapse
Affiliation(s)
- Hui Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| |
Collapse
|
2
|
Iravani S. Silica-based nanosystems against antibiotic-resistant bacteria and pathogenic viruses. Crit Rev Microbiol 2023; 49:598-610. [PMID: 35930235 DOI: 10.1080/1040841x.2022.2108309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/19/2022] [Accepted: 07/27/2022] [Indexed: 11/03/2022]
Abstract
Today, with the intensity of antibiotic abuse and self-medication, the need for the use of novel systems with high efficiency and biosafety for targeted drug delivery against antibiotic-resistant bacteria and their infections should be highly considered by researchers. Silica-based nanosystems with unique physicochemical properties such as large surface area, tuneable pore diameter, drug loading capacity, controlled particle size/morphology, and good biocompatibility are attractive candidates against antibiotic-resistant bacteria and pathogenic viruses. They can be loaded with antiviral and antimicrobial drugs or molecules through their exclusive internal porous structures or different surface linkers. In this context, smart nanosystems can be produced via suitable surface functionalization/modification with a variety of functional groups to act against different clinical pathogenic microbes or viruses, offering great opportunities for controlling and treating various infections. However, important criteria such as the ability to degrade, biocompatibility, biodegradability, cytotoxicity, stability, clearance from targeted organs should be systematically analysed to develop nanosystems or nanocarriers with high efficiency and multifunctionality. Herein, recent advancements pertaining to the application of silica-based nanosystems against antibiotic-resistant bacteria and pathogenic viruses are deliberated, focussing on important challenges and future perspectives.
Collapse
Affiliation(s)
- Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
3
|
Yu Y, Zhou Z, Huang G, Cheng H, Han L, Zhao S, Chen Y, Meng F. Purifying water with silver nanoparticles (AgNPs)-incorporated membranes: Recent advancements and critical challenges. Water Res 2022; 222:118901. [PMID: 35933814 DOI: 10.1016/j.watres.2022.118901] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/19/2022] [Accepted: 07/23/2022] [Indexed: 06/15/2023]
Abstract
In the face of the growing global water crisis, membrane technology is a promising means of purifying water and wastewater. Silver nanoparticles (AgNPs) have been widely used to improve membrane performance, for antibiofouling, and to aid in photocatalytic degradation, thermal response, and electro-conductivity. However, several critical issues such as short antimicrobial periods, trade-off effects and silver inactivation seriously restrict the engineering application of AgNPs-incorporated membranes. In addition, there is controversy around the use of AgNPs given the toxic preparation process and environmental/biological risks. Hence, it is of great significance to summarize and analyze the recent developments and critical challenges in the use of AgNPs-incorporated membranes in water and wastewater treatment, and to propose potential solutions. We reviewed the different properties and functions of AgNPs and their corresponding applications in AgNPs-incorporated membranes. Recently, multifunctional, novel AgNP-incorporated membranes combined with other functional materials have been developed with high-performance. We further clarified the synergistic mechanisms between AgNPs and these novel nanomaterials and/or polymers, and elucidated their functions and roles in membrane separation. Finally, the critical challenges of AgNPs-incorporated membranes and the proposed solutions were outlined: i) Prolonging the antimicrobial cycle through long-term and controlled AgNPs release; ii) Overcoming the trade-off effect and organic fouling of the AgNPs-incorporated membranes; iii) Preparation of sustainable AgNPs-incorporated membranes; iv) Addressing biotoxicity induced by AgNPs; and v) Deactivation of AgNPs-incorporated membrane. Overall, this review provides a comprehensive discussion of the advancements and challenges of AgNPs-incorporated membranes and guides the development of more robust, multi-functional and sustainable AgNPs-incorporated membranes.
Collapse
Affiliation(s)
- Yuanyuan Yu
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China
| | - Zhongbo Zhou
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China.
| | - Guocheng Huang
- Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, 350108, China
| | - Hong Cheng
- College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Le Han
- College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Shanshan Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yucheng Chen
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; Chongqing Engineering Research Center of Rural Cleaner Production, Chongqing, 400715, China
| | - Fangang Meng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| |
Collapse
|
4
|
Xiao X, He EJ, Lu XR, Wu LJ, Fan YY, Yu HQ. Evaluation of antibacterial activities of silver nanoparticles on culturability and cell viability of Escherichia coli. Sci Total Environ 2021; 794:148765. [PMID: 34225149 DOI: 10.1016/j.scitotenv.2021.148765] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/23/2021] [Accepted: 06/27/2021] [Indexed: 05/22/2023]
Abstract
Nanoparticles released into the environment are attracting increasing concern because of their potential toxic effects. Conventional methods for assessing the toxicity of nanoparticles are usually confined to cultivable cells, but not applicable to viable but non-culturable (VBNC) cells. However, it remains unknown whether silver nanoparticles (AgNPs), a typical antimicrobial agent, could induce bacteria into a VBNC state in natural environments. In this work, the viability of E. coli, an indicator bacterium widely used for assessing the antibacterial activity of AgNPs, was examined through coupling plate counting, fluorescence staining and adenosine triphosphate (ATP) production. AgNPs were found to have a considerable antibacterial ability, which resulted in less than 0.0004% of culturable cells on plates. However, more than 80% of the cells still maintained their cell membrane integrity under the stress of 80 mg/L AgNPs. Meanwhile, the residue of ATP production (0.6%) was 1500 times higher than that of the culturable cells (< 0.0004%). These results clearly demonstrate that when exposed to AgNPs, most of cells fell into a VBNC state, instead of dying. Environmental factors, e.g., Cl- and illumination, which could change the dissolution, hydrophilicity and zeta potential of AgNPs, eventually influenced the culturability of E. coli. Inhibition of dissolved Ag+ and reactive oxygen species was found to facilitate the mitigation of the strain into a VBNC state. Our findings suggest the necessity of re-evaluating the environmental effects and antibacterial activities of AgNPs.
Collapse
Affiliation(s)
- Xiang Xiao
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; School of The Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - En-Jing He
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Xue-Rong Lu
- School of The Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Li-Jun Wu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
| | - Yang-Yang Fan
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Han-Qing Yu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| |
Collapse
|
5
|
Souter P, Vaughan J, Butcher K, Dowle A, Cunningham J, Dodd J, Hall M, Wilson D, Horner A, Genever P. Identification of mesenchymal stromal cell survival responses to antimicrobial silver ion concentrations released from orthopaedic implants. Sci Rep 2020; 10:18950. [PMID: 33144664 PMCID: PMC7609692 DOI: 10.1038/s41598-020-76087-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 08/27/2020] [Indexed: 01/08/2023] Open
Abstract
Antimicrobial silver (Ag+) coatings on orthopaedic implants may reduce infection rates, but should not be to the detriment of regenerative cell populations, primarily mesenchymal stem/stromal cells (MSCs). We determined intramedullary silver release profiles in vivo, which were used to test relevant Ag+ concentrations on MSC function in vitro. We measured a rapid elution of Ag+ from intramedullary pins in a rat femoral implantation model, delivering a maximum potential concentration of 7.8 µM, which was below toxic levels determined for MSCs in vitro (EC50, 33 µM). Additionally, we present in vitro data of the reduced colonisation of implants by Staphylococcus aureus. MSCs exposed to Ag+ prior to/during osteogenic differentiation were not statistically affected. Notably, at clonal density, the colony-forming capacity of MSCs was significantly reduced in the presence of 10 µM Ag+, suggesting that a subpopulation of clonal MSCs was sensitive to Ag+ exposure. At a molecular level, surviving colony-forming MSCs treated with Ag+ demonstrated a significant upregulation of components of the peroxiredoxin/thioredoxin pathway and processes involved in glutathione metabolism compared to untreated controls. Inhibition of glutathione synthesis using l-buthionine sulfoxamine eliminated MSC clonogenicity in the presence of Ag+, which was rescued by exogenous glutathione.
Collapse
Affiliation(s)
- Paul Souter
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - John Vaughan
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Kerry Butcher
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Adam Dowle
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Jim Cunningham
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - James Dodd
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Michael Hall
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Darren Wilson
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Alan Horner
- Smith and Nephew plc, 101 Hessle Road, Hull, HU3 4DJ, UK
| | - Paul Genever
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK.
| |
Collapse
|
6
|
Limna Mol VP, Abdulaziz A, Sneha KG, Praveen PJ, Raveendran TV, Parameswaran PS. Inhibition of pathogenic Vibrio harveyi using calamenene, derived from the Indian gorgonian Subergorgia reticulata, and its synthetic analog. 3 Biotech 2020; 10:248. [PMID: 32411572 PMCID: PMC7214568 DOI: 10.1007/s13205-020-02241-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/02/2020] [Indexed: 10/24/2022] Open
Abstract
We report the synthesis and antimicrobial properties of a partially reduced dihydronathphthoquinone analogue of 2-methoxy, 5-acetoxy calamenene, extracted from Subergorgia reticulata. The growth of a pathogenic Vibrio harveyi strain was effectively controlled by the calamenene derivative 1 (Cala1) and its synthetic analog 2 (Cala2). Complete mortality of V. harveyi was observed with 2.5 and 0.5 µg mL-1 concentrations of Cala1 and Cala2, respectively. The metabolic assays demonstrated that Cala1 is a bacteriostatic agent while Cala2 showed bactericidal properties. It was confirmed that translocation of Cala2 into the cytoplasm does not induce any change to the integrity of the bacterial cell wall. The Cala2 induced damage to the genetic material of 70% of cells while genetic material of 91% of cells treated with Cala1 remained intact. The Cala2 is, therefore, proposed as a potential bactericidal compound against the aquaculture pathogen V. harveyi. The fact that the Cala2 exhibited minimal cytotoxicity to Artemia nauplii indicates its potential use as an antimicrobial agent for aquaculture operations.
Collapse
Affiliation(s)
- V. P. Limna Mol
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
- Present Address: School of Ocean Science and Technology, Kerala University of Fisheries and Ocean Sciences (KUFOS), Panangad, Kerala 682506 India
| | - Anas Abdulaziz
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - K. G. Sneha
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - P. J. Praveen
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - T. V. Raveendran
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - P. S. Parameswaran
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| |
Collapse
|
7
|
Sadoon AA, Khadka P, Freeland J, Gundampati RK, Manso RH, Ruiz M, Krishnamurthi VR, Thallapuranam SK, Chen J, Wang Y. Silver Ions Caused Faster Diffusive Dynamics of Histone-Like Nucleoid-Structuring Proteins in Live Bacteria. Appl Environ Microbiol 2020; 86:e02479-19. [PMID: 31953329 PMCID: PMC7054089 DOI: 10.1128/aem.02479-19] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 01/10/2020] [Indexed: 12/13/2022] Open
Abstract
The antimicrobial activity and mechanism of silver ions (Ag+) have gained broad attention in recent years. However, dynamic studies are rare in this field. Here, we report our measurement of the effects of Ag+ ions on the dynamics of histone-like nucleoid-structuring (H-NS) proteins in live bacteria using single-particle-tracking photoactivated localization microscopy (sptPALM). It was found that treating the bacteria with Ag+ ions led to faster diffusive dynamics of H-NS proteins. Several techniques were used to understand the mechanism of the observed faster dynamics. Electrophoretic mobility shift assay on purified H-NS proteins indicated that Ag+ ions weaken the binding between H-NS proteins and DNA. Isothermal titration calorimetry confirmed that DNA and Ag+ ions interact directly. Our recently developed sensing method based on bent DNA suggested that Ag+ ions caused dehybridization of double-stranded DNA (i.e., dissociation into single strands). These evidences led us to a plausible mechanism for the observed faster dynamics of H-NS proteins in live bacteria when subjected to Ag+ ions: Ag+-induced DNA dehybridization weakens the binding between H-NS proteins and DNA. This work highlighted the importance of dynamic study of single proteins in live cells for understanding the functions of antimicrobial agents in bacteria.IMPORTANCE As so-called "superbug" bacteria resistant to commonly prescribed antibiotics have become a global threat to public health in recent years, noble metals, such as silver, in various forms have been attracting broad attention due to their antimicrobial activities. However, most of the studies in the existing literature have relied on the traditional bioassays for studying the antimicrobial mechanism of silver; in addition, temporal resolution is largely missing for understanding the effects of silver on the molecular dynamics inside bacteria. Here, we report our study of the antimicrobial effect of silver ions at the nanoscale on the diffusive dynamics of histone-like nucleoid-structuring (H-NS) proteins in live bacteria using single-particle-tracking photoactivated localization microscopy. This work highlights the importance of dynamic study of single proteins in live cells for understanding the functions of antimicrobial agents in bacteria.
Collapse
Affiliation(s)
- Asmaa A Sadoon
- Department of Physics, University of Arkansas, Fayetteville, Arkansas, USA
- Microelectronics-Photonics Graduate Program, University of Arkansas, Fayetteville, Arkansas, USA
- Department of Physics, University of Thi Qar, Thi Qar, Iraq
| | - Prabhat Khadka
- Department of Physics, University of Arkansas, Fayetteville, Arkansas, USA
| | - Jack Freeland
- Department of Physics, University of Arkansas, Fayetteville, Arkansas, USA
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas, USA
| | - Ravi Kumar Gundampati
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas, USA
| | - Ryan H Manso
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas, USA
| | - Mason Ruiz
- Department of Physics, University of Arkansas, Fayetteville, Arkansas, USA
- Department of Biological Sciences, University of Arkansas, Fayetteville, Arkansas, USA
| | | | | | - Jingyi Chen
- Microelectronics-Photonics Graduate Program, University of Arkansas, Fayetteville, Arkansas, USA
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas, USA
| | - Yong Wang
- Department of Physics, University of Arkansas, Fayetteville, Arkansas, USA
- Microelectronics-Photonics Graduate Program, University of Arkansas, Fayetteville, Arkansas, USA
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, Arkansas, USA
| |
Collapse
|
8
|
Chen QY, Xiao SL, Shi SQ, Cai LP. A One-Pot Synthesis and Characterization of Antibacterial Silver Nanoparticle-Cellulose Film. Polymers (Basel) 2020; 12:E440. [PMID: 32069877 PMCID: PMC7077706 DOI: 10.3390/polym12020440] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 02/07/2023] Open
Abstract
Using N,N-dimethylacetamide (DMAc) as a reducing agent in the presence of PVP-K30, the stable silver nanoparticles (Ag-NPs) solution was prepared by a convenient method for the in situ reduction of silver nitrate. The cellulose-Ag-NPs composite film (CANF) was cast in the same container using lithium chloride (LiCl) giving the Ag-NPs-PVP/DMAc solution cellulose solubility as well as γ-mercaptopropyltrimethoxysilane (MPTS) to couple Ag-NPs and cellulose. The results showed that the Ag-NPs were uniformly dispersed in solution, and the solution had strong antibacterial activities. It was found that the one-pot synthesis allowed the growth of and cross-linking with cellulose processes of Ag-NPs conducted simultaneously. Approximately 61% of Ag-NPs was successfully loaded in CANF, and Ag-NPs were uniformly dispersed in the surface and internal of the composite film. The composite film exhibited good tensile properties (tensile strength could reach up to 86.4 MPa), transparency (light transmittance exceeds 70%), thermal stability, and remarkable antibacterial activities. The sterilization effect of CANF0.04 against Staphylococcus aureus and Escherichia coli exceed 99.9%. Due to low residual LiCl/DMAc and low diffusion of Ag-NPs, the composite film may have potential for applications in food packaging and bacterial barrier.
Collapse
Affiliation(s)
- Qi-Yuan Chen
- College of Engineering and Technology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China;
| | - Sheng-Ling Xiao
- College of Engineering and Technology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China;
| | - Sheldon Q. Shi
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203, USA; (S.Q.S.); (L.-P.C.)
| | - Li-Ping Cai
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203, USA; (S.Q.S.); (L.-P.C.)
| |
Collapse
|
9
|
Feng ZV, Miller BR, Linn TG, Pho T, Hoang KNL, Hang MN, Mitchell SL, Hernandez RT, Carlson EE, Hamers RJ. Biological impact of nanoscale lithium intercalating complex metal oxides to model bacterium B. subtilis. Environ Sci Nano 2019; 6:305-314. [PMID: 31572614 PMCID: PMC6768416 DOI: 10.1039/c8en00995c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The wide applications of lithium intercalating complex metal oxides in energy storage devices call for a better understanding of their environmental impact at the end of their life cycle. In this study, we examine the biological impact of a panel of nanoscale lithium nickel manganese cobalt oxides (Li x Ni y Mn z Co1-y-z O2, 0 < x, y, z < 1, abbreviated to NMCs) to a model Gram-positive bacterium, Bacillus subtilis, in terms of cellular respiration and growth. A highly sensitive single-cell gel electrophoresis method is also applied for the first time to understand the genotoxicity of these nanomaterials to bacterial cells. Results from these assays indicate that the free Ni and Co ions released from the incongruent dissolution of the NMC material in B. subtilis growth medium induced both hindered growth and cellular respiration. More remarkably, the DNA damage induced by the combination of the two ions in solution is comparable to that induced by the NMC material, which suggests that the free Ni and Co ions are responsible for the toxicity observed. A material redesign by enriching Mn is also presented. The combined approaches of evaluating their impact on bacterial growth, respiration, and DNA damage at a single-cell level, as well as other phenotypical changes allows us to probe the nanomaterials and bacterial cells from a mechanistic prospective, and provides a useful means to an understanding of bacterial response to new potential environmental stressors.
Collapse
Affiliation(s)
- Z. Vivian Feng
- Chemistry Department, Augsburg University, Minneapolis, MN 55454, USA
| | - Blake R. Miller
- Chemistry Department, Augsburg University, Minneapolis, MN 55454, USA
| | - Taylor G. Linn
- Chemistry Department, Augsburg University, Minneapolis, MN 55454, USA
| | - Thomas Pho
- Chemistry Department, Augsburg University, Minneapolis, MN 55454, USA
| | | | - Mimi N. Hang
- Department of Chemistry, University of Wisconsin, Madison, WI 53706, USA
| | | | | | - Erin E. Carlson
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Robert J. Hamers
- Department of Chemistry, University of Wisconsin, Madison, WI 53706, USA
| |
Collapse
|
10
|
Ullah AKA, Kabir MF, Akter M, Tamanna AN, Hossain A, Tareq ARM, Khan MNI, Kibria AKMF, Kurasaki M, Rahman MM. Green synthesis of bio-molecule encapsulated magnetic silver nanoparticles and their antibacterial activity. RSC Adv 2018; 8:37176-37183. [PMID: 35557822 PMCID: PMC9088908 DOI: 10.1039/c8ra06908e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 10/22/2018] [Indexed: 11/21/2022] Open
Abstract
Persuaded by the necessity of finding new sources of antibiotics, silver nanoparticles (Ag NPs) were synthesized by adopting a newly developed green synthesis technique and subsequently, their antibacterial activity against different pathogenic bacteria was evaluated. We have successfully synthesized bio-molecule capped ferromagnetic Ag NPs with an average crystallite size of 13 nm using AgNO3 solution as a precursor and Artocarpus heterophyllus leaf extract as a reducing and capping agent. The characterization of the synthesized Ag NPs was carried out using various techniques such as UV-visible (UV-Vis) spectroscopy, energy dispersive X-ray (EDX) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetry (TG), and vibrating sample magnetometer (VSM) analyses. After exposing the synthesized Ag NPs to two Gram-positive bacteria – Staphylococcus aureus and Bacillus cereus and two Gram-negative bacteria – Escherichia coli and Salmonella typhimurium, the zones of inhibition were found to be 15, 16, 19, and 18 mm, respectively. These results imply that the Artocarpus heterophyllus leaf extract mediated green synthesized bio-molecules encapsulated Ag NPs can be considered as a potential antibiotic against human pathogens which is very encouraging. Persuaded by the necessity of finding new sources of antibiotics, Ag NPs were synthesized by adopting a newly developed green synthesis technique and subsequently, their antibacterial activity against different pathogenic bacteria was evaluated.![]()
Collapse
Affiliation(s)
- A. K. M. Atique Ullah
- Nanoscience and Technology Research Laboratory
- Atomic Energy Centre
- Bangladesh Atomic Energy Commission
- Dhaka 1000
- Bangladesh
| | - M. F. Kabir
- Department of Physics
- University of Dhaka
- Dhaka 1000
- Bangladesh
| | - M. Akter
- Graduate School of Environmental Science
- Hokkaido University
- 060-0810 Sapporo
- Japan
| | - A. N. Tamanna
- Department of Physics
- University of Dhaka
- Dhaka 1000
- Bangladesh
| | - A. Hossain
- Department of Physical and Inorganic Chemistry
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- 620000 Yekaterinburg
- Russia
| | - A. R. M. Tareq
- Nanoscience and Technology Research Laboratory
- Atomic Energy Centre
- Bangladesh Atomic Energy Commission
- Dhaka 1000
- Bangladesh
| | - M. N. I. Khan
- Nanoscience and Technology Research Laboratory
- Atomic Energy Centre
- Bangladesh Atomic Energy Commission
- Dhaka 1000
- Bangladesh
| | - A. K. M. Fazle Kibria
- Nanoscience and Technology Research Laboratory
- Atomic Energy Centre
- Bangladesh Atomic Energy Commission
- Dhaka 1000
- Bangladesh
| | - Masaaki Kurasaki
- Graduate School of Environmental Science
- Hokkaido University
- 060-0810 Sapporo
- Japan
| | - M. M. Rahman
- Department of Physics
- University of Dhaka
- Dhaka 1000
- Bangladesh
| |
Collapse
|
11
|
Sheeba VA, Abdulaziz A, Gireeshkumar TR, Ram A, Rakesh PS, Jasmin C, Parameswaran PS. Role of heavy metals in structuring the microbial community associated with particulate matter in a tropical estuary. Environ Pollut 2017; 231:589-600. [PMID: 28843898 DOI: 10.1016/j.envpol.2017.08.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 08/11/2017] [Accepted: 08/13/2017] [Indexed: 05/20/2023]
Abstract
Particulate matter (PM), which are chemically and biochemically complicated particles, accommodate a plethora of microorganisms. In the present study, we report the influence of heavy metal pollution on the abundance and community structure of archaea and bacteria associated with PM samples collected from polluted and non-polluted regions of Cochin Estuary (CE), Southwest coast of India. We observed an accumulation of heavy metals in PM collected from CE, and their concentrations were in the order Fe > Zn > Mn > Cr > Pb > Cu > Cd > Co > Ni. Zinc was a major pollutant in the water (4.36-130.50 μgL-1) and in the particulate matter (765.5-8451.28 μgg-1). Heavy metals, Cd, Co, and Pb were recorded in the particulate matter, although they were below detectable limits in the water column. Statistical analysis showed a positive influence of particulate organic carbon, nitrogen, PM-Pb, PM-Zn and PM-Fe on the abundance of PM-archaea and PM-bacteria. The abundance of archaea and bacteria were ten times less in PM compared with planktonic ones. The abundance of PM-archaea ranged between 4.27 and 9.50 × 107and 2.73 to 3.85 × 107 cellsL-1 respectively for the wet and dry season, while that of PM-bacteria was between 1.14 and 6.72 × 108 cellsL-1 for both seasons. Community structure of PM-bacteria varied between polluted and non-polluted stations, while their abundance does not show a drastic difference. This could be attributed to the selective enrichment of bacteria by heavy metals in PM. Such enrichment may only promote the growth of metal resistant archaea and bacteria, which may not participate in the processing of PM. In such cases, the PM may remain without remineralization in the system arresting the food web dynamics and biogeochemical cycles.
Collapse
Affiliation(s)
- V A Sheeba
- CSIR -National Institute of Oceanography, Regional Centre, Cochin, 682018, India
| | - Anas Abdulaziz
- CSIR -National Institute of Oceanography, Regional Centre, Cochin, 682018, India.
| | - T R Gireeshkumar
- CSIR -National Institute of Oceanography, Regional Centre, Cochin, 682018, India
| | - Anirudh Ram
- CSIR -National Institute of Oceanography, Regional Centre, Mumbai, 400 053, India
| | - P S Rakesh
- CSIR -National Institute of Oceanography, Regional Centre, Mumbai, 400 053, India
| | - C Jasmin
- CSIR -National Institute of Oceanography, Regional Centre, Cochin, 682018, India
| | - P S Parameswaran
- CSIR -National Institute of Oceanography, Regional Centre, Cochin, 682018, India
| |
Collapse
|
12
|
Bhuvaneshwari M, Bairoliya S, Parashar A, Chandrasekaran N, Mukherjee A. Differential toxicity of Al2O3 particles on Gram-positive and Gram-negative sediment bacterial isolates from freshwater. Environ Sci Pollut Res Int 2016; 23:12095-12106. [PMID: 26965278 DOI: 10.1007/s11356-016-6407-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/01/2016] [Indexed: 06/05/2023]
Abstract
The current study was aimed to explore the differential effects on Gram-positive and Gram-negative freshwater sediment bacterial isolates upon exposure to nano-particles and bulk particles of Al2O3 at low concentrations (0.25, 0.5, and 1 mg/L). The Gram-negative Pseudomonas aeruginosa was more susceptible to both the nano-forms and bulk forms than the Gram-positive Bacillus altitudinis. The generation of reactive oxygen species (ROS) and release of lipopolysaccharide due to membrane damage were dependent on the dose of nano-Al2O3. The Fourier transform infrared spectroscopy (FT-IR) studies confirmed the attachment of nano-Al2O3 on bacterial cells, which may lead to subsequent changes in the cell membrane composition and integrity. Internalization of nano-Al2O3 was estimated to be more for P. aeruginosa than for B. altitudinis cells. As a role of defense mechanism, the biofilm formation and production of extracellular polymeric substances (EPSs; polysaccharide and protein) were increased with respect to the concentration of toxicant. Nano-Al2O3 was estimated to cause more DNA damage than the bulk particles in both Gram-positive and Gram-negative bacterial strains.
Collapse
Affiliation(s)
- M Bhuvaneshwari
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Sakcham Bairoliya
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Abhinav Parashar
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - N Chandrasekaran
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, India.
| |
Collapse
|
13
|
Abdulaziz A, Sageer S, Chekidhenkuzhiyil J, Vijayan V, Pavanan P, Athiyanathil S, Nair S. Unicellular cyanobacteriaSynechocystisaccommodate heterotrophic bacteria with varied enzymatic and metal resistance properties. J Basic Microbiol 2016; 56:845-56. [DOI: 10.1002/jobm.201500693] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/12/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Anas Abdulaziz
- CSIR-National Institute of Oceanography; Regional Centre; Kochi Kerala India
| | - Saliha Sageer
- CSIR-National Institute of Oceanography; Regional Centre; Kochi Kerala India
| | | | - Vijitha Vijayan
- CSIR-National Institute of Oceanography; Regional Centre; Kochi Kerala India
| | - Pratheesh Pavanan
- CSIR-National Institute of Oceanography; Regional Centre; Kochi Kerala India
| | - Sujith Athiyanathil
- Department of Chemistry; National Institute of Technology; Calicut Kerala India
| | - Shanta Nair
- CSIR-National Institute of Oceanography; Regional Centre; Kochi Kerala India
| |
Collapse
|
14
|
Durán N, Durán M, de Jesus MB, Seabra AB, Fávaro WJ, Nakazato G. Silver nanoparticles: A new view on mechanistic aspects on antimicrobial activity. Nanomedicine: Nanotechnology, Biology and Medicine 2016; 12:789-99. [DOI: 10.1016/j.nano.2015.11.016] [Citation(s) in RCA: 832] [Impact Index Per Article: 104.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/13/2015] [Accepted: 11/16/2015] [Indexed: 12/17/2022]
|
15
|
Abstract
Multiple studies have shown that the antibacterial dressing Acticoat can inhibit growth of bacteria but is unable to completely clear a wound of infection, which could leave patients vulnerable to sepsis. Agar inoculated with four different Staphylococcus aureus strains and overlain with Acticoat showed growth inhibition beneath and within a 1 mm perimeter of the dressing after 24 h. When lifted from inoculated agar and briefly blotted onto fresh agar plates, Acticoat transferred viable bacteria. Scanning electron microscopy of the surface of Acticoat that overlaid meticillin-resistant S. aureus for 24, 48 and 72 h showed dense clusters of apparently undamaged bacteria distributed across the mesh. The number of bacteria growing on inoculated pig skin, underneath and on the surface of Acticoat, was lower than on controls for the first 8 h, but after 24 h the number of bacteria on the skin was 2.3-fold greater than the untreated controls. In contrast, after 24 h the number of bacteria surviving on the surface of the Acticoat was 11.9 % of controls. Acticoat moistened with 10 % glycerol plus antimicrobial peptides (AMPs) mel12-26 or bac8c (50 μg ml- 1) reduced the numbers of bacteria on the dressing and on the skin underneath to below 10 % and 0.01 % of the controls, respectively. When lysozyme (1 mg ml- 1) was added to Acticoat wetted with glycerol and the AMP bac8c, the dressing was able to prevent the survival of bacteria on densely inoculated pig skin and on the surface of Acticoat for up to 24 h. In effect, biocompatible solvents and AMPs significantly enhance the bactericidal efficacy of Acticoat.
Collapse
Affiliation(s)
- Joshua Ravensdale
- School of Biomedical Sciences, Curtin University, Perth,Western Australia,Australia
| | - Fiona Wood
- Fiona Wood Foundation, Fiona Stanley Hospital, Murdoch,Western Australia,Australia
| | - Francis O'Brien
- School of Biomedical Sciences, Curtin University, Perth,Western Australia,Australia
| | - Keith Gregg
- School of Biomedical Sciences, Curtin University, Perth,Western Australia,Australia
| |
Collapse
|
16
|
Ostaszewska T, Chojnacki M, Kamaszewski M, Sawosz-Chwalibóg E. Histopathological effects of silver and copper nanoparticles on the epidermis, gills, and liver of Siberian sturgeon. Environ Sci Pollut Res Int 2016; 23:1621-33. [PMID: 26381783 PMCID: PMC4713450 DOI: 10.1007/s11356-015-5391-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/07/2015] [Indexed: 05/18/2023]
Abstract
The influence of nanoparticles (NPs) on aquatic environments is still poorly documented. The aim of the study was to determine the effects of silver (AgNPs) and copper (CuNPs) nanoparticles on larval Siberian sturgeon (Acipenser baerii) after 21 days of exposure. Acute toxicity of AgNPs on Siberian sturgeon was investigated in a 96-h static renewal study and compared with the toxicity of CuNPs. The AgNPs and CuNPs 96 h mean lethal concentrations (96 h LC50) were 15.03 ± 2.91 and 1.41 ± 0.24 mg L(-1), respectively. Toxicity tests were done in triplicates for each concentration of AgNPs 0.1, 0.5, 1.5 mg L(-1) and CuNPs 0.01, 0.05, 0.15 mg L(-1). The control group was exposed in freshwater. The results indicate that AgNPs and CuNPs exposure negatively influenced survival; body length and mass; and morphology and physiology of the epidermis, gills, and liver of Siberian sturgeon larvae. Fish exposed to AgNPs and CuNPs showed similar pathological changes: irregular structure and pyknotic nuclei of epidermis, aplasia and/or fusion of lamellae, telangiectasis, epithelial necrosis and lifting of the gills, dilation of sinusoidal space, overfilled blood vessels, and pyknotic nuclei of the liver. Fish exposed to CuNPs only demonstrated hyaline degeneration in the gills epithelium and liver. The study shows that CuNPs were more toxic to Siberian sturgeon larvae than AgNPs.
Collapse
Affiliation(s)
- Teresa Ostaszewska
- Division of Ichthyobiology and Fisheries, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786, Warsaw, Poland.
| | - Maciej Chojnacki
- Division of Ichthyobiology and Fisheries, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786, Warsaw, Poland
| | - Maciej Kamaszewski
- Division of Ichthyobiology and Fisheries, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786, Warsaw, Poland
| | - Ewa Sawosz-Chwalibóg
- Department of Biotechnology and Biochemistry of Nutrition, Faculty of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786, Warsaw, Poland
| |
Collapse
|
17
|
Qin L, Wang P, Guo Y, Chen C, Liu M. Self-Assembled Soft Nanomaterials Via Silver(I)-Coordination: Nanotube, Nanofiber, and Remarkably Enhanced Antibacterial Effect. Adv Sci (Weinh) 2015; 2:1500134. [PMID: 27980916 PMCID: PMC5115345 DOI: 10.1002/advs.201500134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/08/2015] [Indexed: 05/20/2023]
Abstract
Silver(I)-induced instant gelation of pyridine-containing Fmoc-l-glutamate and its concentration-dependent self-assembly from nanotubes to nanofibers are investigated. The formed metallogel with nanostructure has remarkably enhanced antibacterial activities. Interestingly, the nanotube and nanofiber exhibit different antibacterial activities, and a corresponding antimicrobial mechanism is proposed.
Collapse
Affiliation(s)
- Long Qin
- Beijing National Laboratory for Molecular Science (BNLMS) CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Peng Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology of China Beijing 100190 P. R. China
| | - Yuanwang Guo
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology of China Beijing 100190 P. R. China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology of China Beijing 100190 P. R. China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science (BNLMS) CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| |
Collapse
|
18
|
Delaval M, Boland S, Solhonne B, Nicola MA, Mornet S, Baeza-Squiban A, Sallenave JM, Garcia-Verdugo I. Acute exposure to silica nanoparticles enhances mortality and increases lung permeability in a mouse model of Pseudomonas aeruginosa pneumonia. Part Fibre Toxicol 2015; 12:1. [PMID: 25605549 PMCID: PMC4318199 DOI: 10.1186/s12989-014-0078-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 12/24/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The lung epithelium constitutes the first barrier against invading pathogens and also a major surface potentially exposed to nanoparticles. In order to ensure and preserve lung epithelial barrier function, the alveolar compartment possesses local defence mechanisms that are able to control bacterial infection. For instance, alveolar macrophages are professional phagocytic cells that engulf bacteria and environmental contaminants (including nanoparticles) and secrete pro-inflammatory cytokines to effectively eliminate the invading bacteria/contaminants. The consequences of nanoparticle exposure in the context of lung infection have not been studied in detail. Previous reports have shown that sequential lung exposure to nanoparticles and bacteria may impair bacterial clearance resulting in increased lung bacterial loads, associated with a reduction in the phagocytic capacity of alveolar macrophages. RESULTS Here we have studied the consequences of SiO2 nanoparticle exposure on Pseudomonas aeruginosa clearance, Pseudomonas aeruginosa-induced inflammation and lung injury in a mouse model of acute pneumonia. We observed that pre-exposure to SiO2 nanoparticles increased mice susceptibility to lethal pneumonia but did not modify lung clearance of a bioluminescent Pseudomonas aeruginosa strain. Furthermore, internalisation of SiO2 nanoparticles by primary alveolar macrophages did not reduce the capacity of the cells to clear Pseudomonas aeruginosa. In our murine model, SiO2 nanoparticle pre-exposure preferentially enhanced Pseudomonas aeruginosa-induced lung permeability (the latter assessed by the measurement of alveolar albumin and IgM concentrations) rather than contributing to Pseudomonas aeruginosa-induced lung inflammation (as measured by leukocyte recruitment and cytokine concentration in the alveolar compartment). CONCLUSIONS We show that pre-exposure to SiO2 nanoparticles increases mice susceptibility to lethal pneumonia but independently of macrophage phagocytic function. The deleterious effects of SiO2 nanoparticle exposure during Pseudomonas aeruginosa-induced pneumonia are related to alterations of the alveolar-capillary barrier rather than to modulation of the inflammatory responses.
Collapse
Affiliation(s)
- Mathilde Delaval
- Univ Paris Diderot. Sorbone Paris Cité. Unit of Functional and Adaptive Biology (BFA) UMR 8251, CNRS, Laboratory of Molecular and Cellular Responses to Xenobiotics, 5 rue Thomas Mann, 75013, Paris, France.
| | - Sonja Boland
- Univ Paris Diderot. Sorbone Paris Cité. Unit of Functional and Adaptive Biology (BFA) UMR 8251, CNRS, Laboratory of Molecular and Cellular Responses to Xenobiotics, 5 rue Thomas Mann, 75013, Paris, France.
| | - Brigitte Solhonne
- Unité de Défense Innée et Inflammation, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U874, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U1152, Faculté de Médicine site Bichat, Université Paris Diderot, 16, rue Henri Huchard, 75018, Paris, France.
| | - Marie-Anne Nicola
- Plateforme d'imagerie dynamique, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France.
| | - Stéphane Mornet
- CNRS, Univ. Bordeaux, ICMCB, UPR 9048, 87 Avenue du Docteur A. Schweitzer, Pessac cedex, F-33600, France.
| | - Armelle Baeza-Squiban
- Univ Paris Diderot. Sorbone Paris Cité. Unit of Functional and Adaptive Biology (BFA) UMR 8251, CNRS, Laboratory of Molecular and Cellular Responses to Xenobiotics, 5 rue Thomas Mann, 75013, Paris, France.
| | - Jean-Michel Sallenave
- Unité de Défense Innée et Inflammation, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U874, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U1152, Faculté de Médicine site Bichat, Université Paris Diderot, 16, rue Henri Huchard, 75018, Paris, France. .,Université Sorbonne Paris Cité, Cellule Pasteur, Université Paris Diderot, rue du Dr Roux, 75015, Paris, France.
| | - Ignacio Garcia-Verdugo
- Unité de Défense Innée et Inflammation, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U874, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. .,INSERM U1152, Faculté de Médicine site Bichat, Université Paris Diderot, 16, rue Henri Huchard, 75018, Paris, France. .,Université Sorbonne Paris Cité, Cellule Pasteur, Université Paris Diderot, rue du Dr Roux, 75015, Paris, France.
| |
Collapse
|
19
|
Mueller-Spitz SR, Crawford KD. Silver nanoparticle inhibition of polycyclic aromatic hydrocarbons degradation by Mycobacterium species RJGII-135. Lett Appl Microbiol 2013; 58:330-7. [PMID: 24286199 DOI: 10.1111/lam.12205] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 10/30/2013] [Accepted: 11/07/2013] [Indexed: 02/03/2023]
Abstract
UNLABELLED Polycyclic aromatic hydrocarbons (PAH) are a common environmental contaminant originating from both anthropogenic and natural sources. Mycobacterium species are highly adapted to utilizing a variety of PAH. Silver nanoparticles (AgNP) are an emerging contaminant that possess bactericidal properties, interferes with the bacterial membrane and alters function. Mycobacterium sp. strain RJGII-135 provided a model bacterium to assess changes in carbon metabolism by focusing on PAH degradation, which is dependent upon passive uptake of hydrophobic molecules into the cell membrane. A mixture of 18 PAH served as a complex mixture of carbon sources for assessing carbon metabolism. At environmentally relevant PAH concentrations, RJGII-135 degraded two-, three-, and four-ring PAH within 72 h, but preferentially attacked phenanthrene and fluorene. Total cell growth and PAH degradation were successively reduced when exposed to 0·05-0·5 mg 1(-1) AgNP. However, 0·05 mg l(-1) AgNP inhibited degradation of naphthalene, acenaphthylene and acenaphthalene. RJGII-135 retained the ability to degrade the methylated naphthalenes regardless of AgNP concentration suggesting that proteins involved in dihydrodiol formation were inhibited. The reduced PAH metabolism of RJGII-135 when exposed to sublethal concentrations of AgNP provides evidence that nanoparticle pollution could alter carbon cycling in soils, sediment and aquatic environments. SIGNIFICANCE AND IMPACT OF THE STUDY Silver nanoparticle (AgNP) pollution threatens bacterial-mediated processes due to their antibacterial properties. With the widespread commercial use of AgNP, continued environmental release is inevitable and we are just beginning to understand the potential environmental ramifications of nanoparticle pollution. This study examined AgNP inhibition of carbon metabolism through the polycyclic aromatic hydrocarbon degradation by Mycobacterium species RJGII-135. Sublethal doses altered PAH metabolism, which is dependent upon cell membrane properties and intracellular proteins. The changed carbon metabolism when exposed to sublethal doses of AgNP suggests broad impacts of this pollution on bacterial carbon cycling in diverse environments.
Collapse
Affiliation(s)
- S R Mueller-Spitz
- Department of Biology and Microbiology, University of Wisconsin Oshkosh, Oshkosh, WI, USA
| | | |
Collapse
|
20
|
Kim S, Jang J, Kim H, Choi H, Lee K, Choi IH. The effects of silica nanoparticles in macrophage cells. Immune Netw 2012; 12:296-300. [PMID: 23397001 PMCID: PMC3566426 DOI: 10.4110/in.2012.12.6.296] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 12/13/2012] [Accepted: 12/17/2012] [Indexed: 12/16/2022] Open
Abstract
Silica nanoparticles, which are applicable in many industrial fields, have been reported to induce cellular changes such as cytotoxicity in various cells and fibrosis in lungs. Because the immune system is the primary targeting organ reacting to internalized exogenous nanoparticles, we tried to figure out the immunostimulatory effect of silica nanoparticles in macrophages using differently sized silica nanoparticles. Using U937 cells we assessed cytotoxicity by CCK-8 assay, ROS generation by CM-H2DCFDA, intracellular Ca++ levels by staining with Fluo4-AM and IL-8 production by ELISA. At non-toxic concentration, the intracellular Ca++ level has increased immediately after exposure to 15 nm particles, not to larger particles. ROS generation was detected significantly in response to 15 nm particles. However, all three different sizes of silica nanoparticles induced IL-8 production. 15 nm silica nanoparticles are more stimulatory than larger particles in cytotoxicity, intracellular Ca++ increase and ROS generation. But IL-8 production was induced to same levels with 50 or 100 nm particles. Therefore, IL-8 production induced by silica nanoparticles may be dependent on other mechanisms rather than intracellular Ca++ increase and ROS generation.
Collapse
Affiliation(s)
- Seungjae Kim
- Department of Microbiology, The Institute for Immunology and Immunological Diseases, College of Medicine, Yonsei University, Seoul 120-752, Korea
| | | | | | | | | | | |
Collapse
|