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Bonvin D, Aschauer U, Alexander DTL, Chiappe D, Moniatte M, Hofmann H, Mionić Ebersold M. Protein Corona: Impact of Lymph Versus Blood in a Complex In Vitro Environment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700409. [PMID: 28582610 DOI: 10.1002/smll.201700409] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/29/2017] [Indexed: 06/07/2023]
Abstract
In biological environments, the surface of nanoparticles (NPs) are modified by protein corona (PC) that determines their biological behavior. Unfortunately, in vitro tests still give different PC than in vivo tests causing in vitro-in vivo discrepancy; hence, in vitro studies are not indicative for the NPs' behavior in vivo. Here is demonstrated that PC in vitro is strongly influenced by the type of extracellular fluid (ECF), blood or lymph, by their high and low flow conditions and transitions between ECFs, and a combination of these parameters. As a result, this in vitro study approaches fluidic and dynamic variations to which NPs are exposed in vivo: different ECF that NPs encounter first in different injection routes, different transitions in-between ECFs during circulation, and simultaneous change in the exposed flow in these transitions. The most-abundant proteins in PCs are found to be not the most abundant in ECFs, but those having high affinity for binding to the surface of NPs. Moreover, some proteins are differently abundant in PCs at different flows, which indicate force-promoted binding, catch bonds. These results suggest that future in vitro studies should consider more complex incubation conditions to improve the in vitro-in vivo consistency necessary for translational research.
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Affiliation(s)
- Debora Bonvin
- Powder Technology Laboratory, Institute of Materials, Ecole polytechnique fédérale de Lausanne, EPFL STI IMX LTP, Station 12, 1015, Lausanne, Switzerland
| | - Ulrich Aschauer
- Department of Chemistry and Biochemistry, University of Bern, N431, Freiestrasse 3, 3012, Bern, Switzerland
| | - Duncan T L Alexander
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne, EPFL SB CIME-GE, Station 12, 1015, Lausanne, Switzerland
| | - Diego Chiappe
- Proteomics Core Facility, Ecole Polytechnique Fédérale de Lausanne, EPFL SV PTECH PTP, Station 15, 1015, Lausanne, Switzerland
| | - Marc Moniatte
- Proteomics Core Facility, Ecole Polytechnique Fédérale de Lausanne, EPFL SV PTECH PTP, Station 15, 1015, Lausanne, Switzerland
| | - Heinrich Hofmann
- Powder Technology Laboratory, Institute of Materials, Ecole polytechnique fédérale de Lausanne, EPFL STI IMX LTP, Station 12, 1015, Lausanne, Switzerland
| | - Marijana Mionić Ebersold
- Powder Technology Laboratory, Institute of Materials, Ecole polytechnique fédérale de Lausanne, EPFL STI IMX LTP, Station 12, 1015, Lausanne, Switzerland
- Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011, Lausanne, Switzerland
- Center of Biomedical Imaging (CIBM), Rue du Bugnon 46, 1011, Lausanne, Switzerland
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Papavasileiou KD, Avramopoulos A, Leonis G, Papadopoulos MG. Computational investigation of fullerene-DNA interactions: Implications of fullerene’s size and functionalization on DNA structure and binding energetics. J Mol Graph Model 2017; 74:177-192. [DOI: 10.1016/j.jmgm.2017.02.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 10/20/2022]
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Patel S, Patel P, Bakshi SR. Titanium dioxide nanoparticles: an in vitro study of DNA binding, chromosome aberration assay, and comet assay. Cytotechnology 2017; 69:245-263. [PMID: 28050721 PMCID: PMC5366963 DOI: 10.1007/s10616-016-0054-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/15/2016] [Indexed: 12/24/2022] Open
Abstract
Engineered titanium dioxide nanoparticles (TiO2 NPs) are extensively used in cosmetic, pharmaceutical and other industries globally due to their unique properties, which has raised concern for biosafety. Genotoxicity assessment is an important part of biosafety evaluation; we report in vitro cytogenetic assays for NPs considering their unique physicochemical characteristics to fill the gap of laboratory data regarding biological safety along with mechanistic study for mode of interaction of NP with genetic material. Comet and chromosome aberration assay (CA assay) using short-term human peripheral blood cultures following exposure to TiO2 NPs; along with physicochemical parameters for stability of nano form in cultures; and DNA binding activity were carried out. The dynamic light scattering and zeta potential measurements revealed mono dispersion in media. The fluorescence spectroscopy for binding affinity of TiO2 NPs and human genomic DNA showed binding constant (Kb), 4.158 × 106 M-1 indicating strong binding affinity and negative ΔG0 value suggesting spontaneous DNA binding supporting its genotoxic potential. Following in vitro exposure to TiO2 NPs for 24 h, the cultures were analyzed for comet and CA assays, which showed significant results (p < 0.05) for % DNA intensity in tail, Olive Tail Moment and frequency of Chromosomal aberrations (CA) at 75 and 125 μM but not at 25 μM.
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Affiliation(s)
- Suhani Patel
- Institute of Science, Nirma University, Ahmedabad, Gujarat 382481 India
| | - Palak Patel
- Institute of Science, Nirma University, Ahmedabad, Gujarat 382481 India
| | - Sonal R. Bakshi
- Institute of Science, Nirma University, Ahmedabad, Gujarat 382481 India
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Behavior and Potential Impacts of Metal-Based Engineered Nanoparticles in Aquatic Environments. NANOMATERIALS 2017; 7:nano7010021. [PMID: 28336855 PMCID: PMC5295211 DOI: 10.3390/nano7010021] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/07/2017] [Accepted: 01/17/2017] [Indexed: 01/29/2023]
Abstract
The specific properties of metal-based nanoparticles (NPs) have not only led to rapidly increasing applications in various industrial and commercial products, but also caused environmental concerns due to the inevitable release of NPs and their unpredictable biological/ecological impacts. This review discusses the environmental behavior of metal-based NPs with an in-depth analysis of the mechanisms and kinetics. The focus is on knowledge gaps in the interaction of NPs with aquatic organisms, which can influence the fate, transport and toxicity of NPs in the aquatic environment. Aggregation transforms NPs into micrometer-sized clusters in the aqueous environment, whereas dissolution also alters the size distribution and surface reactivity of metal-based NPs. A unique toxicity mechanism of metal-based NPs is related to the generation of reactive oxygen species (ROS) and the subsequent ROS-induced oxidative stress. Furthermore, aggregation, dissolution and ROS generation could influence each other and also be influenced by many factors, including the sizes, shapes and surface charge of NPs, as well as the pH, ionic strength, natural organic matter and experimental conditions. Bioaccumulation of NPs in single organism species, such as aquatic plants, zooplankton, fish and benthos, is summarized and compared. Moreover, the trophic transfer and/or biomagnification of metal-based NPs in an aquatic ecosystem are discussed. In addition, genetic effects could result from direct or indirect interactions between DNA and NPs. Finally, several challenges facing us are put forward in the review.
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55
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Das S, Pramanik S, Chatterjee S, Das PP, Devi PS, Suresh Kumar G. Selective Binding of Genomic Escherichia coli DNA with ZnO Leads to White Light Emission: A New Aspect of Nano-Bio Interaction and Interface. ACS APPLIED MATERIALS & INTERFACES 2017; 9:644-657. [PMID: 28029245 DOI: 10.1021/acsami.6b11109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Here, we report for the first time, a novel and intriguing application of deoxyribonucleic acid (DNA) in the area of optics by demonstrating white light emission by tuning the emission of a nanomaterial, ZnO rods, exhibiting surface defects, in the presence of genomic Escherichia coli DNA with a comparatively high quantum efficiency. In order to understand the DNA specificity, we have also studied the interaction of ZnO with CT, and ML DNA, ss EC DNA, synthetic polynucleotides and different mononucleosides and bases. Further, in order to understand the effect of particle shape and defects present in ZnO, we have also extended our study with ZnO rods prepared at higher temperature exhibiting red emission and ZnO particles exhibiting yellow emission. Interestingly, none of the above studies resulted in white light emission from ZnO-DNA complex. Our studies unequivocally confirmed that the concentration and the nature of DNA and ZnO together plays a crucial role in obtaining CIE coordinates (0.33, 0.33) close to white light. The much enhanced melting temperature (Tm) of EC DNA and the energetics factors confirm enhanced hydrogen bonding of ZnO with EC DNA leading to a new emission band. Our experimental observations not only confirm the selective binding of ZnO to EC DNA but also open a new perspective for developing energy saving light emitting materials through nano-bio interactions.
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Affiliation(s)
- Sumita Das
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | - Srikrishna Pramanik
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | - Sabyasachi Chatterjee
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , Kolkata-700032, India
| | - Partha Pratim Das
- Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute , Kolkata-700032, India
| | | | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , Kolkata-700032, India
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Xia Q, Li H, Liu Y, Zhang S, Feng Q, Xiao K. The effect of particle size on the genotoxicity of gold nanoparticles. J Biomed Mater Res A 2016; 105:710-719. [PMID: 27770565 DOI: 10.1002/jbm.a.35944] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 10/16/2016] [Accepted: 10/18/2016] [Indexed: 02/05/2023]
Abstract
Despite the increasing biomedical applications of gold nanoparticles (AuNPs), their toxicological effects need to be thoroughly understood. In the present study, the genotoxic potential of commercially available AuNPs with varying size (5, 20, and 50 nm) were assessed using a battery of in vitro and in vivo genotoxicity assays. In the comet assay, 20 and 50 nm AuNPs did not induce obvious DNA damage in HepG2 cells at the tested concentrations, whereas 5 nm NPs induced a dose-dependent increment in DNA damage after 24-h exposure. Furthermore, 5 nm AuNPs induced cell cycle arrest in G1 phase in response to DNA damage, and promoted the production of reactive oxygen species (ROS). In the chromosomal aberration test, AuNPs exposure did not increase in the frequency of chromosomal aberrations in Chinese hamster lung (CHL) cells. In the standard in vivo micronucleus test, no obvious increase in the frequency of micronucleus formation was found in mice after 4 day exposure of AuNPs. However, when the exposure period was extended to 14 days, 5 nm AuNPs presented significant clastogenic damage, with a dose-dependent increase of micronuclei frequencies. This finding suggests that particle size plays an important role in determining the genotoxicity of AuNPs. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 710-719, 2017.
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Affiliation(s)
- Qiyue Xia
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Hongxia Li
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Ying Liu
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.,West China School of Public Health, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Shuyang Zhang
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.,West China School of Public Health, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Qiyi Feng
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.,Laboratory of Non-Human Primate Disease Model research, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Kai Xiao
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.,Laboratory of Non-Human Primate Disease Model research, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
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57
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Gonzalez L, Kirsch-Volders M. Reprint of “Biomonitoring of genotoxic effects for human exposure to nanomaterials: The challenge ahead”. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 770:204-216. [DOI: 10.1016/j.mrrev.2016.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 02/15/2016] [Accepted: 03/01/2016] [Indexed: 12/25/2022]
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58
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Countering drug resistance, infectious diseases, and sepsis using metal and metal oxides nanoparticles: Current status. Colloids Surf B Biointerfaces 2016; 146:70-83. [PMID: 27259161 DOI: 10.1016/j.colsurfb.2016.05.046] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 12/12/2022]
Abstract
One fourth of the global mortalities is still caused by microbial infections largely due to the development of resistance against conventional antibiotics among pathogens, the resurgence of old infectious diseases and the emergence of hundreds of new infectious diseases. The lack of funds and resources for the discovery of new antibiotics necessitates the search for economic and effective alternative antimicrobial agents. Metal and metal oxide nanoparticles including silver and zinc oxide exhibit remarkable antimicrobial activities against pathogens and hence are one of the most propitious alternative antimicrobial agents. These engineered nanomaterials are approved by regulatory agencies such as USFDA and Korea's FITI, for use as antimicrobial agents, supplementary antimicrobials, food packaging, skin care products, oral hygiene, and for fortifying devices prone to microbial infections. Nevertheless, detailed studies, on molecular and biochemical mechanisms underlying their antimicrobial activity are missing. To take the full advantage of this emerging technology selective antimicrobial activity of these nanoparticles against pathogens should be studied. Optimization of these nanomaterials through functionalization to increase their efficacy and biocompatibility is also required. Urgent in vivo studies on the toxicity of nanomaterials at realistic doses are also needed before their clinical translation.
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59
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Biomonitoring of genotoxic effects for human exposure to nanomaterials: The challenge ahead. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 768:14-26. [DOI: 10.1016/j.mrrev.2016.03.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 02/15/2016] [Accepted: 03/01/2016] [Indexed: 11/19/2022]
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60
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Male D, Gromnicova R, McQuaid C. Gold Nanoparticles for Imaging and Drug Transport to the CNS. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2016; 130:155-98. [DOI: 10.1016/bs.irn.2016.05.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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61
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Peng C, Zhang H, Fang H, Xu C, Huang H, Wang Y, Sun L, Yuan X, Chen Y, Shi J. Natural organic matter-induced alleviation of the phytotoxicity to rice (Oryza sativa L.) caused by copper oxide nanoparticles. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:1996-2003. [PMID: 25868010 DOI: 10.1002/etc.3016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/28/2015] [Accepted: 04/06/2015] [Indexed: 06/04/2023]
Abstract
Natural organic matter (NOM) can interact with engineered nanoparticles (NPs) in the environment and modify their behavior and toxicity to organisms. In the present study, the phytotoxicity of copper oxide (CuO) NPs to rice seedlings in the presence of humic acid as a model NOM was investigated. The results showed that CuO NPs induced the inhibition of root elongation, aberrations in root morphology and ultrastructure, and losses of cell viability and membrane integrity. The adverse effects partly resulted from the generation of reactive oxygen species caused by CuO NPs, which led to lipid peroxidation, mitochondrial dysfunction, and programmed cell death in rice seedlings. However, all the phytotoxicity was alleviated with the addition of humic acid because humic acid coatings on nanoparticle surfaces enhanced electrostatic and steric repulsion between the CuO NPs and the plant cell wall/membrane, reducing contact between NPs and plant and CuO NP-induced oxidative damage to plant cells. The present study's results shed light on the mechanism underlying NP phytotoxicity and highlight the influence of NOM on the bioavailability and toxicity of NPs.
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Affiliation(s)
- Cheng Peng
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Hai Zhang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Huaxiang Fang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Chen Xu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Haomin Huang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Yi Wang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Lijuan Sun
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Xiaofeng Yuan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Yingxu Chen
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China
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62
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Parandhaman T, Das A, Ramalingam B, Samanta D, Sastry TP, Mandal AB, Das SK. Antimicrobial behavior of biosynthesized silica-silver nanocomposite for water disinfection: a mechanistic perspective. JOURNAL OF HAZARDOUS MATERIALS 2015; 290:117-126. [PMID: 25746571 DOI: 10.1016/j.jhazmat.2015.02.061] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/24/2015] [Accepted: 02/22/2015] [Indexed: 06/04/2023]
Abstract
The biosynthesis of nano-silica silver nanocomposite (NSAgNC) and it is as antibacterial effect on gram-negative bacteria viz.Escherichia coli and Pseudomonas aeruginosa has been investigated for disinfection of water. The as-synthesized NSAgNC exhibited antibacterial activity in a dose dependent manner and ∼ 99.9% of E. coli and P. aeruginosa were killed at a concentration of 1.5 mg/mL of NSAgNC (5.1 wt% Ag) within 5h. The NSAgNC showed similar antibacterial activities both in oxic and anoxic conditions. The results further demonstrated that NSAgNC exhibited reactive oxygen species (ROS) independent "particle specific" antibacterial activity through multiple steps in absence of leached out Ag(+) ions. The initial binding of NSAgNC on the cell wall caused loss of cell membrane integrity and leakage of cytoplasmic materials. Inhibition of respiratory chain dehydrogenase by NSAgNC caused metabolic inactivation of the cells and affecting the cell viability. Genomic and proteomic studies further demonstrated the fragmentations of both plasmid and genomic DNA and down regulation of protein expression in NSAgNC treated cells, which leading to the cell death. Thus the biosynthesized NSAgNC has great potential as disinfectant for water purification while minimizing the toxic effects.
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Affiliation(s)
- Thanusu Parandhaman
- Bioproducts Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| | - Anisha Das
- Bioproducts Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India
| | - B Ramalingam
- Bioproducts Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India
| | - Debasis Samanta
- Polymer Division, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India
| | - T P Sastry
- Bioproducts Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India
| | - Asit Baran Mandal
- Chemical Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
| | - Sujoy K Das
- Bioproducts Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
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63
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Mao Z, Xu B, Ji X, Zhou K, Zhang X, Chen M, Han X, Tang Q, Wang X, Xia Y. Titanium dioxide nanoparticles alter cellular morphology via disturbing the microtubule dynamics. NANOSCALE 2015; 7:8466-75. [PMID: 25891938 DOI: 10.1039/c5nr01448d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Titanium dioxide (TiO2) nanoparticles (NPs) have been widely used in our daily lives, for example, in the areas of sunscreens, cosmetics, toothpastes, food products, and nanomedical reagents. Recently, increasing concern has been raised about their neurotoxicity, but the mechanisms underlying such toxic effects are still unknown. In this work, we employed a human neuroblastoma cell line (SH-SY5Y) to study the effects of TiO2 NPs on neurological systems. Our results showed that TiO2 NPs did not affect cell viability but induced noticeable morphological changes until 100 μg ml(-1). Immunofluorescence detection showed disorder, disruption, retraction, and decreased intensity of the microtubules after TiO2 NPs treatment. Both α and β tubule expressions did not change in the TiO2 NP-treated group, but the percentage of soluble tubules was increased. A microtubule dynamic study in living cells indicated that TiO2 NPs caused a lower growth rate and a higher shortening rate of microtubules as well as shortened lifetimes of de novo microtubules. TiO2 NPs did not cause changes in the expression and phosphorylation state of tau proteins, but a tau-TiO2 NP interaction was observed. TiO2 NPs could interact with tubule heterodimers, microtubules and tau proteins, which led to the instability of microtubules, thus contributing to the neurotoxicity of TiO2 NPs.
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Affiliation(s)
- Zhilei Mao
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211100, China
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Preedia Babu E, Subastri A, Suyavaran A, Lokeshwara Rao P, Suresh Kumar M, Jeevaratnam K, Thirunavukkarasu C. Extracellularly synthesized ZnO nanoparticles interact with DNA and augment gamma radiation induced DNA damage through reactive oxygen species. RSC Adv 2015. [DOI: 10.1039/c5ra09935h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZnONPs were synthesized using ferulic acid as the reductant and the intricate twofold role as DNA binders and radio sensitizers was revealed, which can pave the way for anticancer therapy.
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Affiliation(s)
- E. Preedia Babu
- Department of Biochemistry and Molecular Biology
- Pondicherry University
- India
| | - A. Subastri
- Department of Biochemistry and Molecular Biology
- Pondicherry University
- India
| | - A. Suyavaran
- Department of Biochemistry and Molecular Biology
- Pondicherry University
- India
| | - P. Lokeshwara Rao
- Department of Biochemistry and Molecular Biology
- Pondicherry University
- India
| | | | - K. Jeevaratnam
- Department of Biochemistry and Molecular Biology
- Pondicherry University
- India
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65
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Sizochenko N, Rasulev B, Gajewicz A, Mokshyna E, Kuz'min VE, Leszczynski J, Puzyn T. Causal inference methods to assist in mechanistic interpretation of classification nano-SAR models. RSC Adv 2015. [DOI: 10.1039/c5ra11399g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Causal inference methods are helpful with finding possible biological mechanisms of nanoparticles' toxicity.
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Affiliation(s)
- Natalia Sizochenko
- Laboratory of Environmental Chemometrics
- Faculty of Chemistry
- University of Gdansk
- Gdansk
- Poland
| | - Bakhtiyor Rasulev
- Interdisciplinary Center for Nanotoxicity
- Department of Chemistry
- Jackson State University
- Jackson
- USA
| | - Agnieszka Gajewicz
- Laboratory of Environmental Chemometrics
- Faculty of Chemistry
- University of Gdansk
- Gdansk
- Poland
| | - Elena Mokshyna
- A.V. Bogatsky Physical–Chemical Institute National Academy of Sciences of Ukraine
- Odessa
- Ukraine
| | - Victor E. Kuz'min
- A.V. Bogatsky Physical–Chemical Institute National Academy of Sciences of Ukraine
- Odessa
- Ukraine
| | - Jerzy Leszczynski
- Interdisciplinary Center for Nanotoxicity
- Department of Chemistry
- Jackson State University
- Jackson
- USA
| | - Tomasz Puzyn
- Laboratory of Environmental Chemometrics
- Faculty of Chemistry
- University of Gdansk
- Gdansk
- Poland
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66
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Gallud A, Fadeel B. Keeping it small: towards a molecular definition of nanotoxicology. EUROPEAN JOURNAL OF NANOMEDICINE 2015. [DOI: 10.1515/ejnm-2015-0020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AbstractIn this essay, we offer the opinion that engineered nanomaterials are, by definition, materials that can interact with biological systems at the nanoscale, and that this very fact underlies both the promise and the peril of this multifaceted class of materials. Furthermore, nanomaterials are cloaked in host-derived proteins, lipids, or other biomolecules as they enter into a living organism and this so-called bio-corona may impact on subsequent interactions with biological structures. We will explore some examples of nanoscale effects of engineered nanomaterials, and discuss how such interactions may underpin toxicity, and, conversely, how nanoscale interactions may be harnessed for clinical applications, including the use of nanoparticles as drugs per se.
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Karlsson HL, Gliga AR, Calléja FMGR, Gonçalves CSAG, Wallinder IO, Vrieling H, Fadeel B, Hendriks G. Mechanism-based genotoxicity screening of metal oxide nanoparticles using the ToxTracker panel of reporter cell lines. Part Fibre Toxicol 2014; 11:41. [PMID: 25179117 PMCID: PMC4237954 DOI: 10.1186/s12989-014-0041-9] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 08/12/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The rapid expansion of manufacturing and use of nano-sized materials fuels the demand for fast and reliable assays to identify their potential hazardous properties and underlying mechanisms. The ToxTracker assay is a recently developed mechanism-based reporter assay based on mouse embryonic stem (mES) cells that uses GFP-tagged biomarkers for detection of DNA damage, oxidative stress and general cellular stress upon exposure. Here, we evaluated the ability of the ToxTracker assay to identify the hazardous properties and underlying mechanisms of a panel of metal oxide- and silver nanoparticles (NPs) as well as additional non-metallic materials (diesel, carbon nanotubes and quartz). METHODS The metal oxide- and silver nanoparticles were characterized in terms of agglomeration and ion release in cell medium (using photon cross correlation spectroscopy and inductively coupled plasma with optical emission spectroscopy, respectively) as well as acellular ROS production (DCFH-DA assay). Cellular uptake was investigated by means of transmission electron microscopy. GFP reporter induction and cytotoxicity of the NPs was simultaneously determined using flow cytometry, and genotoxicity was further tested using conventional assays (comet assay, γ-H2AX and RAD51 foci formation). RESULTS We show that the reporter cells were able to take up nanoparticles and, furthermore, that exposure to CuO, NiO and ZnO nanoparticles as well as to quartz resulted in activation of the oxidative stress reporter, although only at high cytotoxicity for ZnO. NiO NPs activated additionally a p53-associated cellular stress response, indicating additional reactive properties. Conventional assays for genotoxicity assessment confirmed the response observed in the ToxTracker assay. We show for CuO NPs that the induction of oxidative stress is likely the consequence of released Cu ions whereas the effect by NiO was related to the particles per se. The DNA replication stress-induced reporter, which is most strongly associated with carcinogenicity, was not activated by any of the tested nanoparticles. CONCLUSIONS We conclude that the ToxTracker reporter system can be used as a rapid mechanism-based tool for the identification of hazardous properties of metal oxide NPs. Furthermore, genotoxicity of metal oxide NPs seems to occur mainly via oxidative stress rather than direct DNA binding with subsequent replication stress.
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Affiliation(s)
- Hanna L Karlsson
- Nanosafety & Nanomedicine Laboratory, Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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