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Xiao Z, Zheng M, Deng J, Shi Y, Jia M, Li W. Nano-TiO 2 regulates the MAPK (ERK, P38) pathway to promote apoptosis and inhibit proliferation of human colon cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116973. [PMID: 39213753 DOI: 10.1016/j.ecoenv.2024.116973] [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: 05/14/2024] [Revised: 08/13/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Nano titanium dioxides (TiO2) are widely used in drug development, food additives and packaging materials. Although several studies have demonstrated the poisonousness of TiO2 in vivo and in vitro, the underlying molecular mechanisms have not been fully revealed. METHODS Characterization of TiO2 by FTIR, XRD, TEM and DLS. The NCM460 cell line, representing normal colon epithelial cells, was utilized as a model to assess the impact of TiO2 nanoparticles (TiO2-NPs) on cell proliferation and apoptosis. The potential molecular mechanisms underlying its toxic effects were investigated through transcriptome analysis, RT-qPCR, and western blot experiments. RESULTS The particle size of the TiO2-NPs used is about 25 nm, which has typical characteristics of anatase. TiO2-NPs at a concentration of 30-60 μg/mL will cause changes in colon cell morphology, decreased proliferation ability, and increased number of apoptotic cells. TiO2-NPs at a concentration of 6 μg/mL did not significantly modify the transcriptome expression profile of colon cells; while 30 μg/mL had a significant effect, leading to up-regulation of gene expression. The differentially expressed genes predominantly modulate the MAPK signaling pathway, TNF signaling pathway, cytokine-cytokine receptor interaction, and other related pathways. Further, western blot analysis revealed that higher concentrations of TiO2-NPs (30-60 μg/mL) could up-regulate the expression of P53, P21 and Bax, while down-regulating the expression of Bcl2 by regulating the MAPK (ERK, P38) signaling pathway. Simultaneously, it also promoted the decreased in Fos protein expression and inhibited the phosphorylation of Jun and Fos. CONCLUSION This study demonstrates that TiO2-NPs may exert potential toxic effects on colon cells, and therefore the intake of TiO2-NPs should be strictly regulated in practical applications.
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Affiliation(s)
- Zhigang Xiao
- Department of General Surgery, Hunan Provincial People's Hospital, the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, China
| | - Mingchuan Zheng
- Department of General Surgery, Hunan Provincial People's Hospital, the First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, China
| | - Jing Deng
- Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Yi Shi
- Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Mingxi Jia
- Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China; College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi 830052, China.
| | - Wen Li
- Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China.
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2
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Dong R, Meng X, Chang H, Lei Y, Hu Y, Yan Y, Song G. Titanium Dioxide Nanoparticles Induce Cell Cycle Arrest and Apoptosis through Inhibiting PI3K/AKT/mTOR Pathway in Spermatogonia. Biol Trace Elem Res 2024; 202:4065-4077. [PMID: 38079059 DOI: 10.1007/s12011-023-03984-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 11/27/2023] [Indexed: 07/18/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) can result in the reduction of sperm numbers, but the mechanisms have not been well elucidated. The purpose of this study was to investigate the effects of TiO2 NPs on cell cycle and apoptosis in spermatogonia and to explore the role of PI3K/AKT/mTOR signaling pathway in this process. The mouse spermatogonia cell line (GC-1) was treated with TiO2 NPs at different concentrations (0, 25, 50, 75 and 100 μg/mL) for 24 h to detect cell viability, cell cycle, apoptosis, and key proteins related to cell cycle and PI3K/AKT/mTOR signaling pathway. The agonist (IGF-1) and inhibitor (LY294002) of PI3K were used to verify the role of PI3K/AKT/mTOR signaling pathway in cell cycle and apoptosis. TiO2 NPs significantly inhibited cell proliferation, induced cell cycle arrest at G0/G1 phase and resulted in apoptosis. TiO2 NPs downregulated the levels of cyclin-dependent kinases (CDKs) and cyclins, including CDK4, CDK2, Cyclin D1 and Cyclin E1, while upregulated the levels of p21 and p53 proteins. Furthermore, TiO2 NPs inhibited the PI3K/AKT/mTOR signaling pathway by decreasing the levels of p-PI3K, p-AKT and p-mTOR. IGF-1 reversed the G0/G1 phase arrest and apoptosis caused by TiO2 NPs. However, LY294002 aggravated the G0/G1 phase arrest and apoptosis resulting from TiO2 NPs. Collectively, TiO2 NPs induced cell cycle arrest at G0/G1 phase and apoptosis through inhibiting the activation of PI3K/AKT/mTOR pathway, which could be the main reason for the reduction in sperm numbers caused by TiO2 NPs.
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Affiliation(s)
- Ruoyun Dong
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Xiaojia Meng
- The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongmei Chang
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Yuzhu Lei
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Yunhua Hu
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Yizhong Yan
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Guanling Song
- Department of Preventive Medicine / the Key Laboratory for Prevention and Control of Emerging Infectious Diseases and Public Health Security, the Xinjiang Production and Construction Corps, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China.
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3
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Ma Y, Yang X, Ning K, Guo H. M1/M2 macrophage-targeted nanotechnology and PROTAC for the treatment of atherosclerosis. Life Sci 2024; 352:122811. [PMID: 38862062 DOI: 10.1016/j.lfs.2024.122811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/17/2024] [Accepted: 06/04/2024] [Indexed: 06/13/2024]
Abstract
Macrophages play key roles in atherosclerosis progression, and an imbalance in M1/M2 macrophages leads to unstable plaques; therefore, M1/M2 macrophage polarization-targeted treatments may serve as a new approach in the treatment of atherosclerosis. At present, there is little research on M1/M2 macrophage polarization-targeted nanotechnology. Proteolysis-targeting chimera (PROTAC) technology, a targeted protein degradation technology, mediates the degradation of target proteins and has been widely promoted in preclinical and clinical applications as a novel therapeutic modality. This review summarizes the recent studies on M1/M2 macrophage polarization-targeted nanotechnology, focusing on the mechanism and advantages of PROTACs in M1/M2 macrophage polarization as a new approach for the treatment of atherosclerosis.
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Affiliation(s)
- Yupeng Ma
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China; School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China
| | - Xiaofan Yang
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China; School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China
| | - Ke Ning
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China; School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China.
| | - Haidong Guo
- School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China; School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, No. 1200 Cailun Road, Shanghai 201203, China.
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4
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Zhai S, Zhang X, Jiang M, Liu Y, Qu G, Cui X, Hirschbiegel CM, Liu Y, Alves C, Lee YW, Jiang G, Yan B, Rotello VM. Nanoparticles with intermediate hydrophobicity polarize macrophages to plaque-specific Mox phenotype via Nrf2 and HO-1 activation. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133590. [PMID: 38280324 DOI: 10.1016/j.jhazmat.2024.133590] [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: 11/23/2023] [Revised: 01/10/2024] [Accepted: 01/19/2024] [Indexed: 01/29/2024]
Abstract
Mox macrophages were identified recently and are closely associated with atherosclerosis. Considering the potential health risks and the impact on macrophage modulation, this study investigated the Mox polarization of macrophages induced by nanoparticles (NPs) with tunable hydrophobicity. One nanoparticle (C4NP) with intermediate hydrophobicity efficiently upregulated the mRNA expression of Mox-related genes including HO-1, Srxn1, Txnrd1, Gsr, Vegf and Cox-2 through increased accumulation of Nrf2 at a nontoxic concentration in both resting and LPS-challenged macrophages. Additionally, C4NP impaired phagocytic capacity by 20% and significantly increased the secretion of cytokines, including TNFα, IL-6 and IL-10. Mechanistic studies indicated that intracellular reactive oxygen species (ROS) were elevated by 1.5-fold and 2.6-fold in resting and LPS-challenged macrophages respectively. Phosphorylated p62 was increased by 2.5-fold in resting macrophages and maintained a high level in LPS-challenged ones, both of which partially accounted for the significant accumulation of Nrf2 and HO-1. Notably, C4NP depolarized mitochondrial membrane potential by more than 50% and switched macrophages from oxidative phosphorylation-based aerobic metabolism to glycolysis for energy supply. Overall, this study reveals a novel molecular mechanism potentially involving ROS-Nrf2-p62 signaling in mediating macrophage Mox polarization, holding promise in ensuring safer and more efficient use of nanomaterials.
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Affiliation(s)
- Shumei Zhai
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China; Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States.
| | - Xianzhi Zhang
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Mingdi Jiang
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Yujia Liu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Guangbo Qu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaomiao Cui
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | | | - Yuanchang Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Colby Alves
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Yi-Wei Lee
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Bing Yan
- Institute of Environmental Research at the Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, United States.
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5
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Kaur H, Kalia A, Manchanda P. Elucidating the effect of TiO 2 nanoparticles on mung bean rhizobia via in vitro assay: Influence on growth, morphology, and plant growth promoting traits. J Basic Microbiol 2024; 64:e2300306. [PMID: 38183339 DOI: 10.1002/jobm.202300306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 12/10/2023] [Accepted: 12/18/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) are among the most commonly used nanomaterials and are most likely to end up in soil. Therefore, it is pertinent to study the interaction of TiO2 NPs with soil microorganisms. The present in vitro broth study evaluates the impacts of low-dose treatments (0, 1.0, 5.0, 10.0, 20.0, and 40.0 mg L-1 ) of TiO2 NPs on cell viability, morphology, and plant growth promoting (PGP) traits of rhizobia isolated from mung bean root nodule. Two types of TiO2 NPs, that is, mixture of anatase and rutile, and anatase alone were used in the study. These TiO2 NPs were supplemented in broth along with a multifunctional isolate (Bradyrhizobium sp.) and two reference cultures. The exposure of TiO2 (anatase+rutile) NPs at low concentrations (less than 20.0 mg L-1 ) enhanced the cell growth, and total soluble protein content, besides improving the phosphate solubilization, Indole-3-acetic acid (IAA) production, siderophore, and gibberellic acid production. The TiO2 (anatase) NPs enhanced exopolysaccharide (EPS) production by the test rhizobial cultures. The radical scavenging assay was performed to reveal the mode of action of the nano-TiO2 particles. The study revealed higher reactive oxygen species (ROS) generation by the TiO2 (anatase) NPs as compared with TiO2 (anatase+rutile) NPs. Exposure to TiO2 NPs also altered the morphology of rhizobial cells. The findings suggest that TiO2 NPs could act as promoters of PGP traits of PGP bacteria when applied at appropriate lower doses.
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Affiliation(s)
- Harleen Kaur
- Department of Microbiology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India
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6
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Qiang L, Zhao N, Liao K, Sun X, Wang Q, Jin H. Metabolomics and transcriptomics reveal the toxic mechanism of Cd and nano TiO 2 coexposure on rice (Oryza sativa L.). JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131411. [PMID: 37062093 DOI: 10.1016/j.jhazmat.2023.131411] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/02/2023] [Accepted: 04/12/2023] [Indexed: 05/03/2023]
Abstract
Engineered nanoparticles (ENPs) can resist heavy metal toxicity in plants, but their coexposure still exhibits toxicity to plants compared to plants without exposure to ENPs and heavy metals. There have been few studies on the toxic mechanism of nano TiO2-heavy metal coexposure and the effect mechanism of nano TiO2 in plants. Thus, transcriptomics and metabolomics were used to study the toxic mechanism of rutile nano TiO2 or TiO2-Cd (rutile nano TiO2 and CdCl2 mixture) on rice (Oryza sativa L.). After 40 days of exposure, the plant height and root dry weight of rice were significantly decreased in the nano TiO2-Cd group compared to the blank group (nano TiO2 and CdCl2 free). After Cd treatment, 423 differentially expressed genes (DEGs) and 16 differential metabolites were identified. Nano TiO2 exposure induced significant regulation of 299 DEGs and 6 metabolites. After nano TiO2-Cd coexposure, 1660 DEGs and 181 differential metabolites were identified. Notably, the EDGs (e.g., chalcone isomerase and hydroxycinnamoyl transferase) and differential metabolites (e.g., chrysin and galangin) demonstrated the disruption of flavonoid biosynthesis in Cd-treated rice. After rice was exposed to nano TiO2, the DEGs were related to ribosome, whereas the differential metabolites were associated with pyruvate metabolism and valine, leucine, and isoleucine biosynthesis. Furthermore, 14 DEGs (e.g., asparaginyl-tRNA synthetase and methionyl-tRNA formyltransferase) involved in aminoacyl-tRNA biosynthetic pathways were significantly upregulated in rice treated with nano TiO2-Cd, in line with the changes in related metabolites (e.g., L-asparagine and 10-formyltetrahydrofolate). Our results show that it is necessary to pay close attention to the toxicity of nano TiO2-Cd coexposure in paddy ecosystems and use ENPs with caution to combat the phytotoxicity of heavy metals.
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Affiliation(s)
- Liwen Qiang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China
| | - Nan Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Kaizhen Liao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xichao Sun
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China
| | - Qiang Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China
| | - Hangbiao Jin
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
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7
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Almomen A, Alsaleh NB, El-Toni AM, EL-Mahrouky MA, Alhowyan AA, Alkholief M, Alshamsan A, Khurana N, Ghandehari H. In Vitro Safety Assessment of In-House Synthesized Titanium Dioxide Nanoparticles: Impact of Washing and Temperature Conditions. Int J Mol Sci 2023; 24:9966. [PMID: 37373112 PMCID: PMC10298741 DOI: 10.3390/ijms24129966] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/07/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have been widely used in food, cosmetics, and biomedical research. However, human safety following exposure to TiO2 NPs remains to be fully understood. The aim of this study was to evaluate the in vitro safety and toxicity of TiO2 NPs synthesized via the Stöber method under different washing and temperature conditions. TiO2 NPs were characterized by their size, shape, surface charge, surface area, crystalline pattern, and band gap. Biological studies were conducted on phagocytic (RAW 264.7) and non-phagocytic (HEK-239) cells. Results showed that washing amorphous as-prepared TiO2 NPs (T1) with ethanol while applying heat at 550 °C (T2) resulted in a reduction in the surface area and charge compared to washing with water (T3) or a higher temperature (800 °C) (T4) and influenced the formation of crystalline structures with the anatase phase in T2 and T3 and rutile/anatase mixture in T4. Biological and toxicological responses varied among TiO2 NPs. T1 was associated with significant cellular internalization and toxicity in both cell types compared to other TiO2 NPs. Furthermore, the formation of the crystalline structure induced toxicity independent of other physicochemical properties. Compared with anatase, the rutile phase (T4) reduced cellular internalization and toxicity. However, comparable levels of reactive oxygen species were generated following exposure to the different types of TiO2, indicating that toxicity is partially driven via non-oxidative pathways. TiO2 NPs were able to trigger an inflammatory response, with varying trends among the two tested cell types. Together, the findings emphasize the importance of standardizing engineered nanomaterial synthesis conditions and evaluating the associated biological and toxicological consequences arising from changes in synthesis conditions.
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Affiliation(s)
- Aliyah Almomen
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11491, Saudi Arabia
| | - Nasser B. Alsaleh
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Ahmed Mohamed El-Toni
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia;
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), Cairo 11421, Egypt
| | - Mohamed A. EL-Mahrouky
- Soil Science Department, College of Food and Agriculture Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Adel Ali Alhowyan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.); (M.A.)
| | - Musaed Alkholief
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.); (M.A.)
| | - Aws Alshamsan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (A.A.A.); (M.A.)
| | - Nitish Khurana
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA (H.G.)
- Utah Center for Nanomedicine, University of Utah, Salt Lake City, UT 84112, USA
| | - Hamidreza Ghandehari
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA (H.G.)
- Utah Center for Nanomedicine, University of Utah, Salt Lake City, UT 84112, USA
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA
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8
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Santos-Aguilar P, Bernal-Ramírez J, Vázquez-Garza E, Vélez-Escamilla LY, Lozano O, García-Rivas GDJ, Contreras-Torres FF. Synthesis and Characterization of Rutile TiO 2 Nanoparticles for the Toxicological Effect on the H9c2 Cell Line from Rats. ACS OMEGA 2023; 8:19024-19036. [PMID: 37273591 PMCID: PMC10233665 DOI: 10.1021/acsomega.3c01771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 04/27/2023] [Indexed: 06/06/2023]
Abstract
The widespread use of titanium dioxide (TiO2) has raised concerns about potential health risks associated with its cytotoxicity in the cardiovascular system. To evaluate the cytotoxicity of TiO2 particles, the H9c2 rat cardiomyoblasts were used as a biological model, and their toxicological susceptibility to TiO2-anatase and TiO2-rutile particles was studied in vitro. The study examined dose and time exposure responses. The cell viability was evaluated based on metabolic inhibition and membrane integrity loss. The results revealed that both TiO2-anatase and TiO2-rutile particles induced similar levels of cytotoxicity at the inhibition concentrations IC25 (1.4-4.4 μg/cm2) and IC50 (7.2-9.3 μg/cm2). However, at more significant concentrations, TiO2-rutile appeared to be more cytotoxic than TiO2-anatase at 24 h. The study found that the TiO2 particles induced apoptosis events, but necrosis was not observed at any of the concentrations of particles used. The study considered the effects of microstructural properties, crystalline phase, and particle size in determining the capability of TiO2 particles to induce cytotoxicity in H9c2 cardiomyoblasts. The microstress in TiO2 particles was assessed using powder X-ray diffraction through Williamson-Hall and Warren-Averbach analysis. The analysis estimated the apparent crystallite domain and microstrain of TiO2-anatase to be 29 nm (ε = 1.03%) and TiO2-rutile to be 21 nm (ε = 0.53%), respectively. Raman spectroscopy, N2 adsorption isotherms, and dynamic light scattering were used to identify the presence of pure crystalline phases (>99.9%), comparative surface areas (10 m2/g), and ζ-potential values (-24 mV). The difference in the properties of TiO2 particles made it difficult to attribute the cytotoxicity solely to one variable.
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Affiliation(s)
- Pamela Santos-Aguilar
- Escuela
de Ingeniería y Ciencias, Tecnologico
de Monterrey, Monterrey, N.L. 64849, Mexico
| | - Judith Bernal-Ramírez
- Escuela
de Medicina y Ciencias de la Salud, Tecnologico
de Monterrey, Monterrey, N.L. 64460, Mexico
| | - Eduardo Vázquez-Garza
- Escuela
de Medicina y Ciencias de la Salud, Tecnologico
de Monterrey, Monterrey, N.L. 64460, Mexico
| | | | - Omar Lozano
- Escuela
de Medicina y Ciencias de la Salud, Tecnologico
de Monterrey, Monterrey, N.L. 64460, Mexico
- The
Institute for Obesity Research, Tecnologico
de Monterrey, Monterrey, N.L. 64849, Mexico
| | - Gerardo de Jesús García-Rivas
- Escuela
de Medicina y Ciencias de la Salud, Tecnologico
de Monterrey, Monterrey, N.L. 64460, Mexico
- The
Institute for Obesity Research, Tecnologico
de Monterrey, Monterrey, N.L. 64849, Mexico
| | - Flavio F. Contreras-Torres
- Escuela
de Ingeniería y Ciencias, Tecnologico
de Monterrey, Monterrey, N.L. 64849, Mexico
- The
Institute for Obesity Research, Tecnologico
de Monterrey, Monterrey, N.L. 64849, Mexico
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9
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Walsh AN, Mazzotta MG, Nelson TF, Reddy CM, Ward CP. Synergy between Sunlight, Titanium Dioxide, and Microbes Enhances Cellulose Diacetate Degradation in the Ocean. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:13810-13819. [PMID: 36103552 PMCID: PMC9535896 DOI: 10.1021/acs.est.2c04348] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 05/28/2023]
Abstract
Sunlight chemically transforms marine plastics into a suite of products, with formulation─the specific mixture of polymers and additives─driving rates and products. However, the effect of light-driven transformations on subsequent microbial lability is poorly understood. Here, we examined the interplay between photochemical and biological degradation of fabrics made from cellulose diacetate (CDA), a biobased polymer used commonly in consumer products. We also examined the influence of ∼1% titanium dioxide (TiO2), a common pigment and photocatalyst. We sequentially exposed CDA to simulated sunlight and native marine microbes to understand how photodegradation influences metabolic rates and pathways. Nuclear magnetic resonance spectroscopy revealed that sunlight initiated chain scission reactions, reducing CDA's average molecular weight. Natural abundance carbon isotope measurements demonstrated that chain scission ultimately yields CO2, a newly identified abiotic loss term of CDA in the environment. Measurements of fabric mass loss and enzymatic activities in seawater implied that photodegradation enhanced biodegradation by performing steps typically facilitated by cellulase. TiO2 accelerated CDA photodegradation, expediting biodegradation. Collectively, these findings (i) underline the importance of formulation in plastic's environmental fate and (ii) suggest that overlooking synergy between photochemical and biological degradation may lead to overestimates of marine plastic persistence.
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Affiliation(s)
- Anna N. Walsh
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
- Department
of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael G. Mazzotta
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
- Eastman
Chemical Company, Kingsport, Tennessee 37660, United States
| | - Taylor F. Nelson
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Christopher M. Reddy
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Collin P. Ward
- Department
of Marine Chemistry and Geochemistry, Woods
Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
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10
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Li S, Barnard AS. Safety-by-design using forward and inverse multi-target machine learning. CHEMOSPHERE 2022; 303:135033. [PMID: 35618055 DOI: 10.1016/j.chemosphere.2022.135033] [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: 01/12/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The economic and social future of nanotechnology depends on our ability and manufacture nanomaterials that avoid potential toxicity, by identifying them before they are made, used and released into the environment. Safety-by-design is a framework for including these issues at an early stage of the development process, but balancing multiple nanoparticle properties and selection criteria remains challenging. Based on a synthetic data set of over 19,000 possible sunscreen product specifications, we have used multi-target machine learning to predict the corresponding size, shape, concentration and polytype of titania nanoparticle additives. The study considers the optical properties responsible for the sun protection factor and product transparency, including the extinction coefficients for ultra violet and visible light, and the potential for toxicity due to the generation of reactive oxygen species from the photocatalytically active facets of both anatase and rutile nanoparticles, as a function of the size and shape. We predict a number of conventional forward structure/property and property/product relationships, but show that a direct structure/product relationship provides superior performance when predicting multiple properties or product specifications simultaneously. These models are then inverted, re-optimized and re-trained to provide focused, high performing inverse design models that do not require additional optimization, and are capable of identifying nanoparticle configurations outside of the training set. The ability to directly predict suitable nanoparticle structures that conform to prerequisite sun protection, transparently and potential toxicity thresholds represents a new approach to safety-by-design that can be applied to other products and materials where multiple design criteria must be met at the same time.
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Affiliation(s)
- Sichao Li
- School of Computing, Australian National University, 145 Science Road, Acton, ACT, 2601, Australia
| | - Amanda S Barnard
- School of Computing, Australian National University, 145 Science Road, Acton, ACT, 2601, Australia.
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11
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Sharma S, Shree B, Sharma A, Irfan M, Kumar P. Nanoparticle-based toxicity in perishable vegetable crops: Molecular insights, impact on human health and mitigation strategies for sustainable cultivation. ENVIRONMENTAL RESEARCH 2022; 212:113168. [PMID: 35346658 DOI: 10.1016/j.envres.2022.113168] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 02/08/2022] [Accepted: 03/16/2022] [Indexed: 05/27/2023]
Abstract
With the advancement of nanotechnology, the use of nanoparticles (NPs) and nanomaterials (NMs) in agriculture including perishable vegetable crops cultivation has been increased significantly. NPs/NMs positively affect plant growth and development, seed germination, plant stress management, and postharvest handling of fruits and vegetables. However, these NPs sometimes cause toxicity in plants by oxidative stress and excess reactive oxygen species production that affect cellular biomolecules resulting in imbalanced biological and metabolic processes in plants. Therefore, information about the mechanism underlying interactions of NPs with plants is important for the understanding of various physiological and biochemical responses of plants, evaluating phytotoxicity, and developing mitigation strategies for vegetable crops cultivation. To address this, recent morpho-physiological, biochemical and molecular insights of nanotoxicity in the vegetable crops have been discussed in this review. Further, factors affecting the nanotoxicity in vegetables and mitigation strategies for sustainable cultivation have been reviewed. Moreover, the bioaccumulation and biomagnification of NPs and associated phytotoxicity can cause serious effects on human health which has also been summarized. The review also highlights the use of advanced omics approaches and interdisciplinary tools for understanding the nanotoxicity and their possible use for mitigating phytotoxicity.
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Affiliation(s)
- Shweta Sharma
- MS Swaminathan School of Agriculture, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, HP, India
| | - Bharti Shree
- Department of Agricultural Biotechnology, CSK HPKV, Palampur, 176062, HP, India
| | - Ajit Sharma
- Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan, 173230, HP, India
| | - Mohammad Irfan
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA.
| | - Pankaj Kumar
- Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan, 173230, HP, India.
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12
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Mbanga O, Cukrowska E, Gulumian M. Dissolution of titanium dioxide nanoparticles in synthetic biological and environmental media to predict their biodurability and persistence. Toxicol In Vitro 2022; 84:105457. [PMID: 35987448 DOI: 10.1016/j.tiv.2022.105457] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/30/2022]
Abstract
Investigating the biodurability and persistence of titanium dioxide nanoparticles (TiO2 NPs) is of paramount importance because these parameters influence the particles' impact on human health and the environment. Contrary to most research conducted so far, the present study elucidates the dissolution kinetics, namely the dissolution rates, rate constants, order of reaction and half-times of TiO2 NPs in five different simulated biological fluids and two synthetic environmental media to predict their behaviour in real life situations. Results have shown that the dissolution of TiO2 NPs in all simulated fluids was limited. Of all the simulated biological media tested, acidic media such as phagolysosomal and gastric fluid produced the highest dissolution of TiO2 NPs compared to alkaline media such as blood plasma, Gamble's fluid, and intestinal fluid. Furthermore, when the particles were exposed to simulated environmental conditions, the dissolution was higher in high ionic strength seawater compared to freshwater. The dissolution kinetics of titanium dioxide nanoparticles followed first order reaction kinetics and were generally characterized by low dissolution rates and long half-times. These findings indicate that TiO2 NPs are very insoluble and will remain unchanged in the body and environment over long periods of time. Therefore, these particles are most likely to cause both short and long-term health effects and will remain persistent following release into the environment.
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Affiliation(s)
- Odwa Mbanga
- Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg 2050, South Africa; Toxicology and Biochemistry Department, National Institute for Occupational Health, A Division of National Health Laboratories, Johannesburg, South Africa.
| | - Ewa Cukrowska
- Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg 2050, South Africa.
| | - Mary Gulumian
- Toxicology and Biochemistry Department, National Institute for Occupational Health, A Division of National Health Laboratories, Johannesburg, South Africa; Water Research Group, Unit for Environmental Sciences and Management, Northwest University, Private Bag X6001, Potchefstroom 2520, South Africa.
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13
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Li K, Xu D, Liao H, Xue Y, Sun M, Su H, Xiu X, Zhao T. A review on the generation, discharge, distribution, environmental behavior, and toxicity (especially to microbial aggregates) of nano-TiO 2 in sewage and surface-water and related research prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153866. [PMID: 35181357 DOI: 10.1016/j.scitotenv.2022.153866] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 05/28/2023]
Abstract
This article reviews the nano-effects and applications of different crystalline nano‑titanium dioxide (nano-TiO2), identifies their discharge, distribution, behavior, and toxicity to aquatic organisms (focusing on microbial aggregates) in sewage and surface-water, summarizes related toxicity mechanisms, and critically proposes future perspectives. The results show that: 1) based on crystal type, application boundaries of nano-TiO2 have become clear, extending from traditional manufacturing to high-tech fields; 2) concentration of nano-TiO2 in water is as high as hundreds of thousands of μg/L (sewage) or several to dozens of μg/L (surface-water) due to direct application or indirect release; 3) water environmental behaviors of nano-TiO2 are mainly controlled by hydration conditions and particle characteristics; 4) aquatic toxicities of nano-TiO2 are closely related to their water environmental behavior, in which crystal type and tested species (such as single species and microbial aggregates) also play the key role. Going forward, the exploration of the toxicity mechanism will surely become a hot topic in the aquatic-toxicology of nano-TiO2, because most of the research so far has focused on the responses of biological indicators (such as metabolism and damage), while little is known about the stress imprint caused by the crystal structures of nano-TiO2 in water environments. Additionally, the aging of nano-TiO2 in a water environment should be heeded to because the continuously changing surface structure is bound to have a significant impact on its behavior and toxicity. Moreover, for microbial aggregates, comprehensive response analysis should be conducted in terms of the functional activity, surface features, composition structure, internal microenvironment, cellular and molecular level changes, etc., to find the key point of the interaction between nano-TiO2 and microbial aggregates, and to take mitigation or beneficial measures to deal with the aquatic-toxicity of nano-TiO2. In short, this article contributes by 1) reviewing the research status of nano-TiO2 in all aspects: application and discharge, distribution and behavior, and its aquatic toxicity; 2) suggesting the response mechanism of microbial aggregates and putting forward the toxigenic mechanism of nanomaterial structure; 3) pointing out the future research direction of nano-TiO2 in water environment.
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Affiliation(s)
- Kun Li
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Defu Xu
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Hong Liao
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Yan Xue
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Mingyang Sun
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Han Su
- Changwang School of Honors, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Xiaojia Xiu
- Changwang School of Honors, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Tianyi Zhao
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
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14
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Li L, Dong R, Liu T, Yang Y, Chang H, Meng X, Deng Y, Wang Q, Zhao Y, Song G, Hu Y. Nano-titanium dioxide exposure and autophagy: a systematic review and meta-analysis. TOXIN REV 2022. [DOI: 10.1080/15569543.2022.2084419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Li Li
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Ruoyun Dong
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Tao Liu
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin, PR China
| | - Yaqian Yang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Hongmei Chang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Xiaojia Meng
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Yaxin Deng
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Qianqian Wang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Yiman Zhao
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Guanling Song
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
| | - Yunhua Hu
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, PR China
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15
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Reyes-Herrera J, Acosta-Slane D, Castillo-Michel H, Pradas del Real AE, Vogel-Mikus K, Benetti F, Roman M, Villanova J, Valles-Aragón MC. Detection and Characterization of TiO 2 Nanomaterials in Sludge from Wastewater Treatment Plants of Chihuahua State, Mexico. NANOMATERIALS 2022; 12:nano12050744. [PMID: 35269232 PMCID: PMC8911657 DOI: 10.3390/nano12050744] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/09/2022] [Accepted: 02/17/2022] [Indexed: 11/28/2022]
Abstract
TiO2 nanoparticles (TiO2-NPs) have a wide range of industrial applications (paintings, sunscreens, food and cosmetics) and is one of the most intensively used nanomaterials worldwide. Leaching from commercial products TiO2-NPs are predicted to significantly accumulate in wastewater sludges, which are then often used as soil amendment. In this work, sludge samples from four wastewater treatment plants of the Chihuahua State in Mexico were obtained during spring and summer (2017). A comprehensive characterization study was performed by X-ray based (laboratory and synchrotron) techniques and electron microscopy. Ti was detected in all sludge samples (1810–2760 mg/kg) mainly as TiO2 particles ranging from 40 nm up to hundreds of nm. Micro-XANES data was analyzed by principal component analysis and linear combination fitting enabling the identification of three predominant Ti species: anatase, rutile and ilmenite. Micro-XANES from the smaller Ti particles was predominantly anatase (68% + 32% rutile), suggesting these TiO2-NPs originate from paintings and cosmetics. TEM imaging confirmed the presence of nanoscale Ti with smooth surface morphologies resembling engineered TiO2-NPs. The size and crystalline phase of TiO2-NPs in the sludge from this region suggest increased reactivity and potential toxicity to agro-systems. Further studies should be dedicated to evaluating this.
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Affiliation(s)
- Juan Reyes-Herrera
- European Synchrotron Radiation Facility, B.P.220, CEDEX 09, 38043 Grenoble, France; (J.R.-H.); (H.C.-M.); (J.V.)
| | - Damaris Acosta-Slane
- Faculty of Agrotechnological Sciences, Autonomous University of Chihuahua, Campus 1, Pascual Orozco, Chihuahua 31350, Mexico;
| | - Hiram Castillo-Michel
- European Synchrotron Radiation Facility, B.P.220, CEDEX 09, 38043 Grenoble, France; (J.R.-H.); (H.C.-M.); (J.V.)
| | - Ana E. Pradas del Real
- Department Agroenvironmental Research, Madrid’s Institute for Rural Research and Development, Agricultural and Food, Leganitos 47, 28013 Madrid, Spain;
| | - Katarina Vogel-Mikus
- Department of Biology, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia;
- Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Federico Benetti
- EcamRicert Srl, European Centre for the Sustainable Impact of Nanotechnology, Corso Stati Uniti 4, 35127 Padua, Italy;
| | - Marco Roman
- Department of Environmental Sciences Informatics and Statistics, University Ca’ Foscari, Dorsoduro 2137, 30123 Venezia, Italy;
| | - Julie Villanova
- European Synchrotron Radiation Facility, B.P.220, CEDEX 09, 38043 Grenoble, France; (J.R.-H.); (H.C.-M.); (J.V.)
| | - M. Cecilia Valles-Aragón
- Faculty of Agrotechnological Sciences, Autonomous University of Chihuahua, Campus 1, Pascual Orozco, Chihuahua 31350, Mexico;
- Correspondence: ; Tel.: +52-(614)-2396219
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16
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Silva-Bermudez LS, Sevastyanova TN, Schmuttermaier C, De La Torre C, Schumacher L, Klüter H, Kzhyshkowska J. Titanium Nanoparticles Enhance Production and Suppress Stabilin-1-Mediated Clearance of GDF-15 in Human Primary Macrophages. Front Immunol 2021; 12:760577. [PMID: 34975851 PMCID: PMC8714923 DOI: 10.3389/fimmu.2021.760577] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/23/2021] [Indexed: 11/13/2022] Open
Abstract
Macrophages are key innate immune cells that mediate implant acceptance or rejection. Titanium implants degrade over time inside the body, which results in the release of implant wear-off particles. Titanium nanoparticles (TiNPs) favor pro-inflammatory macrophage polarization (M1) and lower tolerogenic activation (M2). GDF-15 regulates immune tolerance and fibrosis and is endocytosed by stabilin-1. How TiNPs affect the healing activities of macrophages and their release of circulating cytokines is an open question in regenerative medicine. In this study for the first time, we identified the transcriptional program induced and suppressed by TiNPs in human pro-inflammatory and healing macrophages. Microarray analysis revealed that TiNPs altered the expression of 5098 genes in M1 (IFN-γ-stimulated) and 4380 genes in M2 (IL-4–stimulated) macrophages. 1980 genes were differentially regulated in both M1 and M2. Affymetrix analysis, confirmed by RT-PCR, demonstrated that TiNPs upregulate expression of GDF-15 and suppress stabilin-1, scavenger receptor of GDF-15. TiNPs also significantly stimulated GDF-15 protein secretion in inflammatory and healing macrophages. Flow cytometry demonstrated, that scavenging activity of stabilin-1 was significantly suppressed by TiNPs. Confocal microscopy analysis showed that TiNPs impair internalization of stabilin-1 ligand acLDL and its transport to the endocytic pathway. Our data demonstrate that TiNPs have a dual effect on the GDF-15/stabilin-1 interaction in macrophage system, by increasing the production of GDF-15 and suppressing stabilin-1-mediated clearance function. In summary, this process can result in a significant increase of GDF-15 in the extracellular space and in circulation leading to unbalanced pro-fibrotic reactions and implant complications.
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Affiliation(s)
- Lina S. Silva-Bermudez
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- German Red Cross Blood Service Baden-Württemberg – Hessen, Mannheim, Germany
| | - Tatyana N. Sevastyanova
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Christina Schmuttermaier
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Carolina De La Torre
- Microarray Analytics – NGS Core Facility (IKC), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Leonie Schumacher
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Harald Klüter
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- German Red Cross Blood Service Baden-Württemberg – Hessen, Mannheim, Germany
| | - Julia Kzhyshkowska
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- German Red Cross Blood Service Baden-Württemberg – Hessen, Mannheim, Germany
- *Correspondence: Julia Kzhyshkowska,
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17
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Raman Spectroscopic Study of TiO 2 Nanoparticles' Effects on the Hemoglobin State in Individual Red Blood Cells. MATERIALS 2021; 14:ma14205920. [PMID: 34683512 PMCID: PMC8537815 DOI: 10.3390/ma14205920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/28/2021] [Accepted: 10/06/2021] [Indexed: 12/18/2022]
Abstract
Titanium dioxide (TiO2) is considered to be a nontoxic material and is widely used in a number of everyday products, such as sunscreen. TiO2 nanoparticles (NP) are also considered as prospective agents for photodynamic therapy and drug delivery. These applications require an understanding of the potential effects of TiO2 on the blood system and its components upon administration. In the presented work, we analyze the interaction of TiO2 nanoparticles of different crystal phases (anatase and rutile) with individual rat Red Blood Cells (RBC) and the TiO2 influence on the oxygenation state and functionality of RBC, estimated via analysis of Raman spectra of Hemoglobin (Hb) and their distribution along individual RBC. Raman spectral signals also allow localization of the TiO2 NP on the RBC. No penetration of the NP inside RBC was observed; however, both kinds of TiO2 NP adsorbed on the RBC membrane can affect the Hb state. Mechanisms involving the NP–membrane–Hb interaction, resulting in partial deoxygenation of Hb and TiO2 photothermal effect on Hb under Raman laser excitation, are suggested. The possible influence on the safety of TiO2 use in advanced medical application, especially on the safety and efficiency of photothermal therapy, is discussed.
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18
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Ding Z, Wang H, Feng Z, Sun M. Synthesis of dual-phase Ti 3O 5/Ti 4O 7 nanofibers for efficient adsorption of SARS-CoV-2. MATERIALS LETTERS 2021; 300:130167. [PMID: 34092831 PMCID: PMC8169221 DOI: 10.1016/j.matlet.2021.130167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 05/18/2023]
Abstract
In this study, we synthesized the dual-phase Ti3O5/Ti4O7 nanofibers for efficient adsorption of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a life-threatening virus being taking millions of people lives. The Ti3O5/Ti4O7 nanofibers were synthesized by preparation of H2Ti3O7 precursor, polydopamine coating and furnace calcination. Protein and phospholipid adsorption assays showed that the dual-phase nanofibers had much higher affinity to both the model molecules bovine serum album (BSA) and phosphatidylethanolamine (PE) than the control single-phase Ti6O11 nanofibers. Consistently, the dual-phase nanofibers exhibited much stronger adsorption ability to SARS-CoV-2 pseudovirus than Ti6O11. This study sheds a light on titanium oxide nanomaterials to adsorb SARS-CoV-2 for avoiding its infection and for capturing it during rapid virus detection.
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Affiliation(s)
- Zhanlin Ding
- Wuqing District Center for Disease Control and Prevention, Tianjin 301700, PR China
- Wuqing Cuihuangkou Hospital of Tianjin, Tianjin 301702, PR China
| | - Hong Wang
- Wuqing District Center for Disease Control and Prevention, Tianjin 301700, PR China
| | - Zhe Feng
- Wuqing District Center for Disease Control and Prevention, Tianjin 301700, PR China
| | - Meiqing Sun
- Wuqing District Center for Disease Control and Prevention, Tianjin 301700, PR China
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19
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Kang Y, Liu J, Jiang Y, Yin S, Huang Z, Zhang Y, Wu J, Chen L, Shao L. Understanding the interactions between inorganic-based nanomaterials and biological membranes. Adv Drug Deliv Rev 2021; 175:113820. [PMID: 34087327 DOI: 10.1016/j.addr.2021.05.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 05/21/2021] [Accepted: 05/29/2021] [Indexed: 12/12/2022]
Abstract
The interactions between inorganic-based nanomaterials (NMs) and biological membranes are among the most important phenomena for developing NM-based therapeutics and resolving nanotoxicology. Herein, we introduce the structural and functional effects of inorganic-based NMs on biological membranes, mainly the plasma membrane and the endomembrane system, with an emphasis on the interface, which involves highly complex networks between NMs and biomolecules (such as membrane proteins and lipids). Significant efforts have been devoted to categorizing and analyzing the interaction mechanisms in terms of the physicochemical characteristics and biological effects of NMs, which can directly or indirectly influence the effects of NMs on membranes. Importantly, we summarize that the biological membranes act as platforms and thereby mediate NMs-immune system contacts. In this overview, the existing challenges and potential applications in the areas are addressed. A strong understanding of the discussed concepts will promote therapeutic NM designs for drug delivery systems by leveraging the NMs-membrane interactions and their functions.
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Affiliation(s)
- Yiyuan Kang
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Guangzhou 510515, China
| | - Jia Liu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yanping Jiang
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Suhan Yin
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhendong Huang
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yanli Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Junrong Wu
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Longquan Shao
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Guangzhou 510515, China.
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20
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Kim IY, Lee TG, Reipa V, Heo MB. Titanium Dioxide Induces Apoptosis under UVA Irradiation via the Generation of Lysosomal Membrane Permeabilization-Dependent Reactive Oxygen Species in HaCat Cells. NANOMATERIALS 2021; 11:nano11081943. [PMID: 34443774 PMCID: PMC8400875 DOI: 10.3390/nano11081943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 12/22/2022]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have wide commercial applications, owing to their small size; however, the biosafety of TiO2 NPs should be evaluated further. In this study, we aimed to investigate the cytotoxicity of TiO2 NPs in the presence and absence of ultraviolet A (UVA) irradiation in human keratinocyte HaCaT cells. TiO2 NPs did not significantly affect cell viability in the absence of UVA irradiation. Nonetheless, UVA-irradiated TiO2 NPs induced caspase-dependent apoptosis of HaCaT cells. Exposure of HaCaT cells to TiO2 NPs and UVA resulted in reactive oxygen species (ROS) generation and lysosomal membrane permeabilization (LMP); both effects were not observed in the absence of UVA irradiation. An analysis of the relationship between LMP and ROS, using CA-074 as a cathepsin inhibitor or NAC as an antioxidant, showed that LMP stimulates ROS generation under these conditions. These results imply that LMP-dependent oxidative stress plays a critical role in the UVA phototoxicity of TiO2 NPs in HaCaT cells.
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Affiliation(s)
- In Young Kim
- Nano-Safety Team, Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea; (I.Y.K.); (T.G.L.)
| | - Tae Geol Lee
- Nano-Safety Team, Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea; (I.Y.K.); (T.G.L.)
| | - Vytas Reipa
- Materials Measurement Laboratory, Biosystems and Biomaterials Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Correspondence: (V.R.); (M.B.H.); Tel.: +1-(301)-975-5056 (V.R.); +82-(042)-604-1052 (M.B.H.)
| | - Min Beom Heo
- Nano-Safety Team, Safety Measurement Institute, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea; (I.Y.K.); (T.G.L.)
- Correspondence: (V.R.); (M.B.H.); Tel.: +1-(301)-975-5056 (V.R.); +82-(042)-604-1052 (M.B.H.)
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21
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Ivanov M, Lyubartsev AP. Atomistic Molecular Dynamics Simulations of Lipids Near TiO 2 Nanosurfaces. J Phys Chem B 2021; 125:8048-8059. [PMID: 34269053 PMCID: PMC8389913 DOI: 10.1021/acs.jpcb.1c04547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Understanding of
interactions between inorganic nanomaterials and
biomolecules, and particularly lipid bilayers, is crucial in many
biotechnological and biomedical applications, as well as for the evaluation
of possible toxic effects caused by nanoparticles. Here, we present
a molecular dynamics study of adsorption of two important constituents
of the cell membranes, 1,2-dimyristoyl-sn-glycero-3-phosphocholine
(DMPC) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine
(POPE), lipids to a number of titanium dioxide planar surfaces, and
a spherical nanoparticle under physiological conditions. By constructing
the number density profiles of the lipid headgroup atoms, we have
identified several possible binding modes and calculated their relative
prevalence in the simulated systems. Our estimates of the adsorption
strength, based on the total fraction of adsorbed lipids, show that
POPE binds to the selected titanium dioxide surfaces stronger than
DMPC, due to the ethanolamine group forming hydrogen bonds with the
surface. Moreover, while POPE shows a clear preference toward anatase
surfaces over rutile, DMPC has a particularly high affinity to rutile(101)
and a lower affinity to other surfaces. Finally, we study how lipid
concentration, addition of cholesterol, as well as titanium dioxide
surface curvature may affect overall adsorption.
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Affiliation(s)
- Mikhail Ivanov
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Alexander P Lyubartsev
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
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22
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Boots TE, Kogel AM, Drew NM, Kuempel ED. Utilizing literature-based rodent toxicology data to derive potency estimates for quantitative risk assessment. Nanotoxicology 2021; 15:740-760. [PMID: 34087078 DOI: 10.1080/17435390.2021.1918278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Evaluating the potential occupational health risk of engineered nanomaterials is an ongoing need. The objective of this meta-analysis, which consisted of 36 studies containing 86 materials, was to assess the availability of published in vivo rodent pulmonary toxicity data for a variety of nanoscale and microscale materials and to derive potency estimates via benchmark dose modeling. Additionally, the potency estimates based on particle mass lung dose associated with acute pulmonary inflammation were used to group materials based on toxicity. The commonalities among the physicochemical properties of the materials in each group were also explored. This exploration found that a material's potency tended to be associated primarily with the material class based on chemical composition and form (e.g. carbon nanotubes, TiO2, ZnO) rather than with particular physicochemical properties. Limitations in the data available precluded a more extensive analysis of these associations. Issues such as data reporting and appropriate experimental design for use in quantitative risk assessment are the main reasons publications were excluded from these analyses and are discussed.
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Affiliation(s)
- Theresa E Boots
- Health Effect Laboratory Division (HELD), BioAnalytics Branch (BB), National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Alyssa M Kogel
- Formerly Oak Ridge Associated Universities/Oak Ridge Institute for Science and Education, at NIOSH, Oak Ridge, TN, USA
| | - Nathan M Drew
- Division of Science Integration (DSI), Emerging Technologies Branch (ETB), NIOSH, Cincinnati, OH, USA
| | - Eileen D Kuempel
- Division of Science Integration (DSI), Emerging Technologies Branch (ETB), NIOSH, Cincinnati, OH, USA
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23
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Yang C, Zhu Y, Guan C, Wang L, Xu L, Li D, Zhang S, Zhang L, Yang D, Xu Y. Crystal Phase-Related Toxicity of One-Dimensional Titanium Dioxide Nanomaterials on Kidney Cells. ACS APPLIED BIO MATERIALS 2021; 4:3499-3506. [PMID: 35014434 DOI: 10.1021/acsabm.1c00036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-dimensional (1D) nanomaterials are widely used in different fields, and the increased application of 1D nanomaterials has drawn concerns about their unknown toxicity. 1D titanium oxide (TiO2) nanomaterials in different crystal phases are commonly applied in environmental remediation and solar energy conversion fields, but these materials pose a threat to human health, especially to the kidneys, an organ with abundant blood flow. To systematically evaluate the cytotoxicity to the kidneys, TiO2 nanofibers with TiO2(B), anatase, and rutile phases, as well as nanorods with anatase and rutile phases were synthesized and added to the culture medium of HK2 cells. Cell counting kit-8 assay, 2',7'-dichlorofluorescin diacetate assay, Hoechst 33342 staining experiments, and quantitative real-time reverse transcription polymerase chain reaction tests were used to explore the renal effects of the as-prepared TiO2 nanomaterials in the short term or long term. In the short-term evaluation, all the added TiO2 nanomaterials were toxic to HK2 cells, and the cytotoxicity was dose-dependent. Rutile TiO2 can widely attach to the cell surface and displays the most serious cell-killing and proapoptotic ability, while anatase induces the most serious oxidative stress. In long-term evaluation, all the as-prepared TiO2 nanomaterials led to epithelial mesenchymal transition (EMT), a mechanism of renal fibrosis. Consistent with the short-term results, rutile induced the most serious EMT. This study indicated that the renal toxicity of 1D TiO2 nanomaterials is crystal phase-dependent and that rutile induced the most significant renal cell injury. Oxidative stress is a crucial but not the only contributor to the renal toxicity of TiO2 nanomaterials in the short term.
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Affiliation(s)
- Chengyu Yang
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yukun Zhu
- State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Chen Guan
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lin Wang
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lingyu Xu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Daohao Li
- State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Shuchao Zhang
- Department of Blood Transfusion, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lixue Zhang
- State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Dongjiang Yang
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.,State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yan Xu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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24
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Kamal N, Zaki AH, El-Shahawy AA, Sayed OM, El-Dek SI. Changing the morphology of one-dimensional titanate nanostructures affects its tissue distribution and toxicity. Toxicol Ind Health 2021; 36:272-286. [PMID: 32552542 DOI: 10.1177/0748233720921693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present research investigated the impact of the morphology change of titanate (TiO2) nanostructures on its tissue distribution and toxicity. The TiO2 nanotubes, rods, and ribbons were synthesized by the hydrothermal technique, and the morphology was adjusted by alteration of the hydrothermal duration time. The characterization techniques were X-ray diffraction, high-resolution transmission electron microscopy, dynamic light scattering, and the Brunauer-Emmett-Teller method for measuring the surface area. The intravenously administrated dose (5 mg/kg) was injected as a single dose for 1 day and consecutively for 42 days. The quantitative analysis of accumulated TiO2 nanostructures in the liver, spleen, and the heart was performed using an inductively coupled plasma emission spectrometer, and the organs' toxicity was estimated by histopathological analysis. The prepared nanostructures exhibited differences in morphology, crystallinity, size distribution, surface area, zeta potential, and aspect ratio. The results revealed a tissue distribution difference between the liver, spleen, and heart of these nanostructures, the distribution order was the liver, spleen, and the heart for all TiO2 nanostructures. The toxicity was induced with different degrees. The nanotubes were the most harmful among the three formats. In summary, changes in the morphology of the TiO2 nanostructures change its distribution and toxicity.
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Affiliation(s)
- Nahla Kamal
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - A H Zaki
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed Ag El-Shahawy
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Ossama M Sayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni Suef University, Beni-Suef, Egypt
| | - S I El-Dek
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni Suef University, Beni-Suef, Egypt
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25
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Ergönül MB, Nassouhi D, Çelik M, Atasağun S. A comparison of the removal efficiencies of Myriophyllum spicatum L. for zinc oxide nanoparticles (ZnO NP) in different media: a microcosm approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:8556-8568. [PMID: 33064281 DOI: 10.1007/s11356-020-11113-3] [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: 06/10/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
The phytoremediation potential of Myriophyllum spicatum L. has been well documented for bulk-sized heavy metals, including zinc (Zn). However, there is no information on the removal efficiencies of this aquatic macrophyte for zinc oxide nanoparticles contaminated waters. Therefore, the present study was aimed to compare the removal efficiency of M. spicatum in two different media: tap water and pond water. Results were evaluated by comparing percentage (%) removal and goodness-of-fit to regression models. Plants were exposed to 0.8 and 2 ppm nano-sized Zn for 1, 4, and 7 days. The zinc concentrations were monitored using ICP-MS. The %removal in tap water ranged between 29.5 and 70.3%, and slightly higher in pond water. Modeling results confirmed that there was a strong relationship between removal performance and exposure duration. Time-dependent removal shows that %removal shows no further progress after 4 days. Our results also indicate that planktonic communities in pond water might play an important role in the fate of ZnO NPs.
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Affiliation(s)
- Mehmet Borga Ergönül
- Department of Biology, Faculty of Science, Ankara University, 06100, Ankara, Turkey.
| | - Danial Nassouhi
- Department of Biology, Faculty of Science, Ankara University, 06100, Ankara, Turkey
| | - Meltem Çelik
- Department of Chemistry, Faculty of Science, Ankara University, 06100, Ankara, Turkey
| | - Sibel Atasağun
- Department of Biology, Faculty of Science, Ankara University, 06100, Ankara, Turkey
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26
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Assessment of the Influence of Crystalline Form on Cyto-Genotoxic and Inflammatory Effects Induced by TiO 2 Nanoparticles on Human Bronchial and Alveolar Cells. NANOMATERIALS 2021; 11:nano11010253. [PMID: 33478013 PMCID: PMC7835860 DOI: 10.3390/nano11010253] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/18/2022]
Abstract
Titanium dioxide nanoparticles (TiO2NPs) are increasingly used in consumer products, industrial and medical applications, raising concerns on their potential toxicity. The available in vitro and in vivo studies on these NPs show controversial results. Crystalline structure is the physicochemical characteristic that seems to influence mainly TiO2NPs toxicity, so its effect needs to be further studied. We aimed to study whether and how crystalline form influences potential cyto-genotoxic and inflammatory effects induced by two commercial TiO2NPs (TiO2-A, mainly anatase; TiO2-B, mainly rutile) in human alveolar A549 and bronchial BEAS-2B cells exposed to 1–40 µg/mL. Cell viability (WST-1), membrane damage (LDH release), IL-6, IL-8 and TNF-α release (ELISA) and direct/oxidative DNA damage (fpg-comet assay) were evaluated. Physicochemical characterization included analysis of crystalline form (TEM and XRD), specific surface area (BET), agglomeration (DLS) and Z-potential (ELS). Our results show that TiO2-A NPs induce in BEAS-2B cytotoxicity and a slight inflammation and in A549 slight oxidative effects, whereas TiO2-B NPs induce genotoxic/oxidative effects in both cell lines, revealing different toxicity mechanisms for the two tested NPs. In conclusion, our study confirms the influence of crystalline form on cellular response, also demonstrating the suitability of our in vitro model to screen early TiO2NPs effects.
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27
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Interaction of food-grade titanium dioxide nanoparticles with pepsin in simulated gastric fluid. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Liu M, Yu Q, Chen W, Liu X, Alvarez PJJ. Engineering of CoSe 2 Nanosheets via Vacancy Manipulation for Efficient Cancer Therapy. ACS APPLIED BIO MATERIALS 2020; 3:7800-7809. [PMID: 35019520 DOI: 10.1021/acsabm.0c00981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
CoSe2 nanosheets with different vacancy associates (i.e., VSeSe, VCoCoSe, VCoSeSe, and VCoCoCoSe) were synthesized by selecting different templates and calcination temperatures. The nanosheets having higher theoretical adsorption toward cellular membrane phospholipids exerted more damage to both artificial liposomes and cell membranes (VSeSe > VCoCoSe > VCoCoCoSe > VCoSeSe) and exhibited higher efficiency to kill tumor cells (e.g., A549 lung cancer cells and HeLa cervical cancer cells). Moreover, VCoCoCoSe CoSe2 nanosheets can be easily coated with the tumor-targeting protein transferrin (Tf), and these Tf-coated nanosheets (Tf-VCoCoCoSe) drastically decreased the viability of various types of cancer cells (81%) without significantly damaging normal cells. Importantly, this treatment was more efficient in eliminating tumor tissues than the common chemotherapeutic drug oxaliplatin. Thus, this study offers proof of concept that manipulating the surface vacancies of CoSe2 nanosheets could provide an efficient route for cancer therapy in a manner that could circumvent or minimize drug resistance development.
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Affiliation(s)
- Mingyang Liu
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Science, Nankai University, Tianjin 300071, P. R. China
| | - Wei Chen
- Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xiangsheng Liu
- NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
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29
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Nelson K, Hesse B, Addison O, Morrell AP, Gross C, Lagrange A, Suárez VI, Kohal R, Fretwurst T. Distribution and Chemical Speciation of Exogenous Micro- and Nanoparticles in Inflamed Soft Tissue Adjacent to Titanium and Ceramic Dental Implants. Anal Chem 2020; 92:14432-14443. [PMID: 32970419 DOI: 10.1021/acs.analchem.0c02416] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Degradation of the implant surface and particle release/formation as an inflammation catalyst mechanism is an emerging concept in dental medicine that may help explain the pathogenesis of peri-implantitis. The aim of the present study was a synchrotron-based characterization of micro- and nanosized implant-related particles in inflamed human tissues around titanium and ceramic dental implants that exhibited signs of peri-implantitis. Size, distribution, and chemical speciation of the exogenous micro- and nanosized particle content were evaluated using synchrotron μ-X-ray fluorescence spectroscopy (XRF), nano-XRF, and μ-X-ray absorption near-edge structure (XANES). Titanium particles, with variable speciation, were detected in all tissue sections associated with titanium implants. Ceramic particles were found in five out of eight tissue samples associated with ceramic implants. Particles ranged in size from micro- to nanoscale. The local density of both titanium and ceramic particles was calculated to be as high as ∼40 million particles/mm3. μ-XANES identified titanium in predominantly two different chemistries, including metallic and titanium dioxide (TiO2). The findings highlight the propensity for particle accumulation in the inflamed tissues around dental implants and will help in guiding toxicological studies to determine the biological significance of such exposures.
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Affiliation(s)
- Katja Nelson
- Department of Oral- and Craniomaxillofacial Surgery/Translational Implantology, Faculty of Medicine, Medical Center-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Bernhard Hesse
- Xploraytion GmbH, Bismarckstrasse 10-12, 10625 Berlin, Germany.,European Synchrotron Radiation Facility (ESRF), 71 avenue des Martyrs, 38043 Grenoble, France
| | - Owen Addison
- Centre for Oral, Clinical & Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, Guy's Hospital, Great Maze Pond, SE1 9RT London, U.K
| | - Alexander P Morrell
- Centre for Oral, Clinical & Translational Sciences, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, Guy's Hospital, Great Maze Pond, SE1 9RT London, U.K
| | - Christian Gross
- Department of Oral- and Craniomaxillofacial Surgery/Translational Implantology, Faculty of Medicine, Medical Center-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Adrien Lagrange
- Xploraytion GmbH, Bismarckstrasse 10-12, 10625 Berlin, Germany
| | - Vanessa I Suárez
- European Synchrotron Radiation Facility (ESRF), 71 avenue des Martyrs, 38043 Grenoble, France
| | - Ralf Kohal
- Department of Prosthetic Dentistry, Faculty of Medicine, Medical Center-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Tobias Fretwurst
- Department of Oral- and Craniomaxillofacial Surgery/Translational Implantology, Faculty of Medicine, Medical Center-University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
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30
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Zhang L, Haddouti EM, Welle K, Burger C, Kabir K, Schildberg FA. Local Cellular Responses to Metallic and Ceramic Nanoparticles from Orthopedic Joint Arthroplasty Implants. Int J Nanomedicine 2020; 15:6705-6720. [PMID: 32982228 PMCID: PMC7494401 DOI: 10.2147/ijn.s248848] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/08/2020] [Indexed: 12/27/2022] Open
Abstract
Over the last decades, joint arthroplasty has become a successful treatment for joint disease. Nowadays, with a growing demand and increasingly younger and active patients accepting these approaches, orthopedic surgeons are seeking implants with improved mechanical behavior and longer life span. However, aseptic loosening as a result of wear debris from implants is considered to be the main cause of long-term implant failure. Previous studies have neatly illustrated the role of micrometric wear particles in the pathological mechanisms underlying aseptic loosening. Recent osteoimmunologic insights into aseptic loosening highlight the important and heretofore underrepresented contribution of nanometric orthopedic wear particles. The present review updates the characteristics of metallic and ceramic nanoparticles generated after prosthesis implantation and summarizes the current understanding of their hazardous effects on peri-prosthetic cells.
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Affiliation(s)
- Li Zhang
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
| | - El-Mustapha Haddouti
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
| | - Kristian Welle
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
| | - Christof Burger
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
| | - Koroush Kabir
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
| | - Frank A Schildberg
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg-Campus 1, Bonn 53127, Germany
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31
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Nagakannan P, Tabeshmehr P, Eftekharpour E. Oxidative damage of lysosomes in regulated cell death systems: Pathophysiology and pharmacologic interventions. Free Radic Biol Med 2020; 157:94-127. [PMID: 32259579 DOI: 10.1016/j.freeradbiomed.2020.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 12/16/2022]
Abstract
Lysosomes are small specialized organelles containing a variety of different hydrolase enzymes that are responsible for degradation of all macromolecules, entering the cells through the endosomal system or originated from the internal sources. This allows for transport and recycling of nutrients and internalization of surface proteins for antigen presentation as well as maintaining cellular homeostasis. Lysosomes are also important storage compartments for metal ions and nutrients. The integrity of lysosomal membrane is central to maintaining their normal function, but like other cellular membranes, lysosomal membrane is subject to damage mediated by reactive oxygen species. This results in spillage of lysosomal enzymes into the cytoplasm, leading to proteolytic damage to cellular systems and organelles. Several forms of lysosomal dependent cell death have been identified in diseases. Examination of these events are important for finding treatment strategies relevant to cancer or neurodegenerative diseases as well as autoimmune deficiencies. In this review, we have examined the current literature on involvement of lysosomes in induction of programed cell death and have provided an extensive list of therapeutic approaches that can modulate cell death. Exploitation of these mechanisms can lead to novel therapies for cancer and neurodegenerative diseases.
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Affiliation(s)
- Pandian Nagakannan
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Parisa Tabeshmehr
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Eftekhar Eftekharpour
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.
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32
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Buitrago E, Novello AM, Meyer T. Third‐Generation Solar Cells: Toxicity and Risk of Exposure. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elina Buitrago
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Safety Competence Center (DSPS-SCC) Station 6 CH-1015 Lausanne Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Group of Chemical and Physical Safety (ISIC-GSCP) Station 6 CH-1015 Lausanne Switzerland
| | - Anna Maria Novello
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Safety Competence Center (DSPS-SCC) Station 6 CH-1015 Lausanne Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Group of Chemical and Physical Safety (ISIC-GSCP) Station 6 CH-1015 Lausanne Switzerland
| | - Thierry Meyer
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Safety Competence Center (DSPS-SCC) Station 6 CH-1015 Lausanne Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL) Group of Chemical and Physical Safety (ISIC-GSCP) Station 6 CH-1015 Lausanne Switzerland
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33
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Collins MK, Shotland AM, Wade MF, Atif SM, Richards DK, Torres-Llompart M, Mack DG, Martin AK, Fontenot AP, McKee AS. A role for TNF-α in alveolar macrophage damage-associated molecular pattern release. JCI Insight 2020; 5:134356. [PMID: 32255768 DOI: 10.1172/jci.insight.134356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 04/01/2020] [Indexed: 01/22/2023] Open
Abstract
Chronic beryllium disease (CBD) is a metal hypersensitivity/autoimmune disease in which damage-associated molecular patterns (DAMPs) promote a break in T cell tolerance and expansion of Be2+/self-peptide-reactive CD4+ T cells. In this study, we investigated the mechanism of cell death induced by beryllium particles in alveolar macrophages (AMs) and its impact on DAMP release. We found that phagocytosis of Be led to AM cell death independent of caspase, receptor-interacting protein kinases 1 and 3, or ROS activity. Before cell death, Be-exposed AMs secreted TNF-α that boosted intracellular stores of IL-1α followed by caspase-8-dependent fragmentation of DNA. IL-1α and nucleosomal DNA were subsequently released from AMs upon loss of plasma membrane integrity. In contrast, necrotic AMs released only unfragmented DNA and necroptotic AMs released only IL-1α. In mice exposed to Be, TNF-α promoted release of DAMPs and was required for the mobilization of immunogenic DCs, the expansion of Be-reactive CD4+ T cells, and pulmonary inflammation in a mouse model of CBD. Thus, early autocrine effects of particle-induced TNF-α on AMs led to a break in peripheral tolerance. This potentially novel mechanism may underlie the known relationship between fine particle inhalation, TNF-α, and loss of peripheral tolerance in T cell-mediated autoimmune disease and hypersensitivities.
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Affiliation(s)
- Morgan K Collins
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | - Abigail M Shotland
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | - Morgan F Wade
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | - Shaikh M Atif
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | | | | | - Douglas G Mack
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | - Allison K Martin
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine
| | - Andrew P Fontenot
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine.,Department of Immunology and Microbiology, University of Colorado School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amy S McKee
- Division of Allergy, Asthma and Clinical Immunology, Department of Medicine.,Department of Immunology and Microbiology, University of Colorado School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Murugadoss S, Brassinne F, Sebaihi N, Petry J, Cokic SM, Van Landuyt KL, Godderis L, Mast J, Lison D, Hoet PH, van den Brule S. Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivo. Part Fibre Toxicol 2020; 17:10. [PMID: 32101144 PMCID: PMC7045370 DOI: 10.1186/s12989-020-00341-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 02/06/2020] [Indexed: 11/23/2022] Open
Abstract
Background The terms agglomerates and aggregates are frequently used in the regulatory definition(s) of nanomaterials (NMs) and hence attract attention in view of their potential influence on health effects. However, the influence of nanoparticle (NP) agglomeration and aggregation on toxicity is poorly understood although it is strongly believed that smaller the size of the NPs greater the toxicity. A toxicologically relevant definition of NMs is therefore not yet available, which affects not only the risk assessment process but also hinders the regulation of nano-products. In this study, we assessed the influence of NP agglomeration on their toxicity/biological responses in vitro and in vivo. Results We tested two TiO2 NPs with different primary sizes (17 and 117 nm) and prepared ad-hoc suspensions composed of small or large agglomerates with similar dispersion medium composition. For in vitro testing, human bronchial epithelial (HBE), colon epithelial (Caco2) and monocytic (THP-1) cell lines were exposed to these suspensions for 24 h and endpoints such as cytotoxicity, total glutathione, epithelial barrier integrity, inflammatory mediators and DNA damage were measured. Large agglomerates of 17 nm TiO2 induced stronger responses than small agglomerates for glutathione depletion, IL-8 and IL-1β increase, and DNA damage in THP-1, while no effect of agglomeration was observed with 117 nm TiO2. In vivo, C57BL/6JRj mice were exposed via oropharyngeal aspiration or oral gavage to TiO2 suspensions and, after 3 days, biological parameters including cytotoxicity, inflammatory cell recruitment, DNA damage and biopersistence were measured. Mainly, we observed that large agglomerates of 117 nm TiO2 induced higher pulmonary responses in aspirated mice and blood DNA damage in gavaged mice compared to small agglomerates. Conclusion Agglomeration of TiO2 NPs influences their toxicity/biological responses and, large agglomerates do not appear less active than small agglomerates. This study provides a deeper insight on the toxicological relevance of NP agglomerates and contributes to the establishment of a toxicologically relevant definition for NMs.
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Affiliation(s)
- Sivakumar Murugadoss
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium
| | | | - Noham Sebaihi
- National Standards, FPS Economy, 1000, Brussels, Belgium
| | - Jasmine Petry
- National Standards, FPS Economy, 1000, Brussels, Belgium
| | - Stevan M Cokic
- Department of Oral Health Sciences, KU Leuven, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Kirsten L Van Landuyt
- Department of Oral Health Sciences, KU Leuven, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Lode Godderis
- Laboratory for Occupational and Environmental Hygiene, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium.,IDEWE, External Service for Prevention and Protection at work, Interleuvenlaan 58, 3001, Heverlee, Belgium
| | - Jan Mast
- Trace Elements and Nanomaterials, Sciensano, 1180, Uccle, Belgium
| | - Dominique Lison
- Louvain centre for Toxicology and Applied Pharmacology, Institute of Experimental and Clinical Research, Université catholique de Louvain, 1200, Brussels, Belgium
| | - Peter H Hoet
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium.
| | - Sybille van den Brule
- Louvain centre for Toxicology and Applied Pharmacology, Institute of Experimental and Clinical Research, Université catholique de Louvain, 1200, Brussels, Belgium.
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Wu D, Ma Y, Cao Y, Zhang T. Mitochondrial toxicity of nanomaterials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 702:134994. [PMID: 31715400 DOI: 10.1016/j.scitotenv.2019.134994] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/11/2019] [Accepted: 10/14/2019] [Indexed: 05/11/2023]
Abstract
In recent years, nanomaterials have been widely applied in electronics, food, biomedicine and other fields, resulting in increased human exposure and consequent research focus on their biological and toxic effects. Mitochondria, the main target organelle for nanomaterials (NM), play a critical role in their toxic activities. Several studies to date have shown that nanomaterials cause alterations in mitochondrial morphology, mitochondrial membrane potential, opening of the mitochondrial permeability transition pore (MPTP) and mitochondrial respiratory function, and promote cytochrome C release. An earlier mitochondrial toxicity study of NMs additionally reported induction of mitochondrial dynamic changes. Here, we have reviewed the mitochondrial toxicity of NMs and provided a scientific basis for the contribution of mitochondria to the toxicological effects of different NMs along with approaches to reduce mitochondrial and, consequently, overall toxicity of NMs.
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Affiliation(s)
- Daming Wu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Ying Ma
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Yuna Cao
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Ting Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
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Schneemilch M, Quirke N. Free energy of adhesion of lipid bilayers on titania surfaces. J Chem Phys 2019; 151:134707. [PMID: 31594325 DOI: 10.1063/1.5120810] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The adhesion strength between a flexible membrane and a solid substrate (formally the free energy of adhesion per unit area) is difficult to determine experimentally, yet is a key parameter in determining the extent of the wrapping of a particle by the membrane. Here, we present molecular dynamics simulations designed to estimate this quantity between dimyristoylphosphatidylcholine (DMPC) bilayers and a range of low-energy titanium dioxide cleavage planes for both anatase and rutile polymorphs. The average adhesion strength across the cleavage planes for rutile and anatase is relatively weak ∼-2.0 ± 0.4 mN m-1. However, rutile has two surfaces (100 and 101) displaying relatively strong adhesion (-4 mN m-1), while anatase has only one (110). This suggests a slightly greater tendency for bilayers to wrap rutile particles compared to anatase particles but both would wrap less than amorphous silica. We also estimate the adsorption free energies of isolated DMPC lipids and find that only the rutile 101 surface shows significant adsorption. In addition, we estimate the adhesion enthalpies and infer that the entropic contribution to the adhesion free energy drives adhesion on the rutile surfaces and opposes adhesion on the anatase surfaces.
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Affiliation(s)
- M Schneemilch
- Department of Chemistry, Imperial College London, London SW7 2AY, United Kingdom
| | - N Quirke
- Department of Chemistry, Imperial College London, London SW7 2AY, United Kingdom
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Gao CH, Mortimer M, Zhang M, Holden PA, Cai P, Wu S, Xin Y, Wu Y, Huang Q. Impact of metal oxide nanoparticles on in vitro DNA amplification. PeerJ 2019; 7:e7228. [PMID: 31293839 PMCID: PMC6599668 DOI: 10.7717/peerj.7228] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/31/2019] [Indexed: 11/20/2022] Open
Abstract
Polymerase chain reaction (PCR) is used as an in vitro model system of DNA replication to assess the genotoxicity of nanoparticles (NPs). Prior results showed that several types of NPs inhibited PCR efficiency and increased amplicon error frequency. In this study, we examined the effects of various metal oxide NPs on inhibiting PCR, using high- vs. low-fidelity DNA polymerases; we also examined NP-induced DNA mutation bias at the single nucleotide level. The effects of seven major types of metal oxide NPs (Fe2O3, ZnO, CeO2, Fe3O4, Al2O3, CuO, and TiO2) on PCR replication via a low-fidelity DNA polymerase (Ex Taq) and a high-fidelity DNA polymerase (Phusion) were tested. The successfully amplified PCR products were subsequently sequenced using high-throughput amplicon sequencing. Using consistent proportions of NPs and DNA, we found that the effects of NPs on PCR yield differed depending on the DNA polymerase. Specifically, the efficiency of the high-fidelity DNA polymerase (Phusion) was significantly inhibited by NPs during PCR; such inhibition was not evident in reactions with Ex Taq. Amplicon sequencing showed that the overall error rate of NP-amended PCR was not significantly different from that of PCR without NPs (p > 0.05), and NPs did not introduce single nucleotide polymorphisms during PCR. Thus, overall, NPs inhibited PCR amplification in a DNA polymerase-specific manner, but mutations were not introduced in the process.
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Affiliation(s)
- Chun-Hui Gao
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Monika Mortimer
- Bren School of Environmental Science and Management, Earth Research Institute and University of California Center for the Environmental Implications of Nanotechnology (UC CEIN), University of California, Santa Barbara, Santa Barbara, CA, USA
| | - Ming Zhang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Patricia A Holden
- Bren School of Environmental Science and Management, Earth Research Institute and University of California Center for the Environmental Implications of Nanotechnology (UC CEIN), University of California, Santa Barbara, Santa Barbara, CA, USA
| | - Peng Cai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Shan Wu
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Yuexing Xin
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Yichao Wu
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
| | - Qiaoyun Huang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China
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Li K, Qian J, Wang P, Wang C, Fan X, Lu B, Tian X, Jin W, He X, Guo W. Toxicity of Three Crystalline TiO 2 Nanoparticles in Activated Sludge: Bacterial Cell Death Modes Differentially Weaken Sludge Dewaterability. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4542-4555. [PMID: 30888807 DOI: 10.1021/acs.est.8b04991] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The eco-toxicities of different crystalline phases of TiO2-NPs are controversial, and the effects and mechanisms on activated sludge are unclear. Therefore, we assessed the acute-toxicities (8-h exposure) of P25, anatase, and rutile TiO2-NPs in activated sludge using flow cytometry under simulated sunlight (hereafter-sun) and evaluated the relationship between sludge dewatering and bacterial cell death modes using Pearson's correlation coefficients ( r). Additionally, the response of the microbial community structure was examined by high throughput sequencing. Bacterial survival and death were observed by confocal laser scanning microscopy. Toxicity indicators (e.g., lactate dehydrogenase (LDH) and reactive oxygen species (ROS)) were determined. Overall, TiO2-NPs toxicity was concentration-dependent and crystalline-phase-dependent. The responses of bacterial communities to crystalline phases were more obvious than that of dosage. P25-sun and anatase-sun caused necrosis-like cell death via strong photo-oxidation confirmed by 131%/123% (1 mg/L) and 301%/254% (50 mg/L) LDH released by the control, while rutile-sun induced apoptosis-like death via intracellular ROS production increased to 165% (1 mg/L) and 420% (50 mg/L) of the control. P25 and anatase NPs had higher protein and polysaccharide affinities, while rutile NPs exhibited stronger attachment onto phospholipids. TiO2-NPs-sun reduced activated sludge dewaterability. Specific resistance to filtration (SRF) showed the strongest positive correlation with tightly bound extracellular polymeric substances (EPS) and total soluble microbial byproducts ( r = 0.974, p < 0.01) and was closely related to EPS content and composition, especially the increased bound water (BW) content and sludge protein concentrations. High Pearson correlation coefficients were observed between early apoptotic cells and BW content ( r = 0.952, p < 0.01) resulting from massive polysaccharides and between necrotic (including late apoptotic) cells and SRF ( r = 0.959, p < 0.01) resulting from high protein and EPS concentrations. Thus, in response to TiO2-NPs, bacterial cell death modes differentially weakened sludge dewatering.
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Affiliation(s)
- Kun Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Xiulei Fan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Bianhe Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Xin Tian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Wen Jin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Xixian He
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education , Hohai University , Nanjing , People's Republic of China , 210098
- College of Environment , Hohai University , Nanjing , People's Republic of China , 210098
| | - Wenzhou Guo
- College of Science , Hohai University , Nanjing , People's Republic of China , 210098
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Wu J, Zhan M, Chang Y, Su Q, Yu R. Adaption and recovery of Nitrosomonas europaea to chronic TiO 2 nanoparticle exposure. WATER RESEARCH 2018; 147:429-439. [PMID: 30342338 DOI: 10.1016/j.watres.2018.09.043] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 06/08/2023]
Abstract
Although the adverse impacts of emerging nanoparticles (NPs) on the biological nitrogen removal (BNR) process have been broadly reported, the adaptive responses of NP-impaired nitrifiers and the related mechanisms have seldom been addressed to date. Here, we systematically explored the adaption and recovery capacities of the ammonia oxidizer Nitrosomonas europaea under chronic TiO2 NP exposure and different dissolved oxygen (DO) conditions at the physiological and transcriptional levels in a chemostat reactor. N. europaea cells adapted to 50 mg/L TiO2 NP exposure after 40-d incubation and the inhibited cell growth, membrane integrity, nitritation rate, and ammonia monooxygenase activity all recovered regardless of the DO concentrations. Transmission electron microscope imaging indicated the remission of the membrane distortion after the cells' 40-d adaption to the NP exposure. The microarray results further suggested that the metabolic processes associated with the membrane repair were pivotal for cellular adaption/recovery, such as the membrane efflux for toxicant exclusion, the structural preservation or stabilization, and the osmotic equilibrium adjustment. In addition, diverse metabolic and stress-defense pathways, including aminoacyl-tRNA biosynthesis, respiratory chain, ATP production, toxin-antitoxin 'stress-fighting', and DNA repair were activated for the cellular adaption coupled with the metabolic activity recovery, probably via recovering the energy production/conversion efficiency and mediating the non-photooxidative stress. Finally, low DO (0.5 mg/L) incubated cells were more susceptible to TiO2 NP exposure and required more time to adapt to and recover from the stress, which was probably due to the stimulation limitation of the oxygen-dependent energy metabolism with a lower oxygen supply. The findings of this study provide new insights into NP contamination control and management adjustments during the BNR process.
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Affiliation(s)
- Junkang Wu
- Department of Environmental Science and Engineering, School of Energy and Environment, Wuxi Engineering Research Center of Taihu Lake Water Environment, Southeast University, Nanjing, Jiangsu, 210096, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing, Jiangsu, 210009, China; Department of Environmental Engineering, Technical University of Denmark, Lyngby, 2800, Denmark
| | - Manjun Zhan
- Nanjing Research Institute of Environmental Protection, Nanjing Environmental Protection Bureau, Nanjing, Jiangsu, 210013, China
| | - Yan Chang
- Department of Environmental Science and Engineering, School of Energy and Environment, Wuxi Engineering Research Center of Taihu Lake Water Environment, Southeast University, Nanjing, Jiangsu, 210096, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Qingxian Su
- Department of Environmental Engineering, Technical University of Denmark, Lyngby, 2800, Denmark
| | - Ran Yu
- Department of Environmental Science and Engineering, School of Energy and Environment, Wuxi Engineering Research Center of Taihu Lake Water Environment, Southeast University, Nanjing, Jiangsu, 210096, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Southeast University, Nanjing, Jiangsu, 210009, China.
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Zhang R, Yan F, Chen Y. Exogenous Physical Irradiation on Titania Semiconductors: Materials Chemistry and Tumor-Specific Nanomedicine. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1801175. [PMID: 30581710 PMCID: PMC6299725 DOI: 10.1002/advs.201801175] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 09/26/2018] [Indexed: 05/04/2023]
Abstract
Titania semiconductors can be activated by external physical triggers to produce electrons (e-) and holes (h+) pairs from the energy-band structure and subsequently induce the generation of reactive oxygen species for killing cancer cells, but the traditional ultraviolet light with potential phototoxicity and low-tissue-penetrating depth as the irradiation source significantly hinders the further in vivo broad biomedical applications. Here, the very-recent development of novel exogenous physical irradiation of titania semiconductors for tumor-specific therapies based on their unique physiochemical properties, including near infrared (NIR)-triggered photothermal hyperthermia and photodynamic therapy, X-ray/Cerenkov radiation-activated deep-seated photodynamic therapy, ultrasound-triggered sonodynamic therapy, and the intriguing synergistic therapeutic paradigms by combined exogenous physical irradiations are in focus. Most of these promising therapeutic modalities are based on the semiconductor nature of titania nanoplatforms, together with their defect modulation for photothermal hyperthermia. The biocompatibility and biosafety of these titania semiconductors are also highlighted for guaranteeing their further clinical translation. Challenges and future developments of titania-based therapeutic nanoplatforms and the corresponding developed therapeutic modalities for potential clinical translation of tumor-specific therapy are also discussed and outlooked.
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Affiliation(s)
- Ruifang Zhang
- Department of UltrasoundThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan Province450052P. R. China
| | - Fei Yan
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055P. R. China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050P. R. China
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Protein affinity for TiO2 and CeO2 manufactured nanoparticles. From ultra-pure water to biological media. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.091] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang M, Lai X, Shao L, Li L. Evaluation of immunoresponses and cytotoxicity from skin exposure to metallic nanoparticles. Int J Nanomedicine 2018; 13:4445-4459. [PMID: 30122919 PMCID: PMC6078075 DOI: 10.2147/ijn.s170745] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Nanotechnology is an interdisciplinary science that has developed rapidly in recent years. Metallic nanoparticles (NPs) are increasingly utilized in dermatology and cosmetology, because of their unique properties. However, skin exposure to NPs raises concerns regarding their transdermal toxicity. The tight junctions of epithelial cells form the skin barrier, which protects the host against external substances. Recent studies have found that NPs can pass through the skin barrier into deeper layers, indicating that skin exposure is a means for NPs to enter the body. The distribution and interaction of NPs with skin cells may cause toxic side effects. In this review, possible penetration pathways and related toxicity mechanisms are discussed. The limitations of current experimental methods on the penetration and toxic effects of metallic NPs are also described. This review contributes to a better understanding of the risks of topically applied metallic NPs and provides a foundation for future studies.
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Affiliation(s)
- Menglei Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China,
| | - Xuan Lai
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Longquan Shao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Li Li
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China,
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Li J, Yang S, Lei R, Gu W, Qin Y, Ma S, Chen K, Chang Y, Bai X, Xia S, Wu C, Xing G. Oral administration of rutile and anatase TiO 2 nanoparticles shifts mouse gut microbiota structure. NANOSCALE 2018; 10:7736-7745. [PMID: 29658026 DOI: 10.1039/c8nr00386f] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The widespread application of TiO2 nanoparticles (NPs) as additives in foods such as gum, candy and puddings has dramatically increased the human ingestion and accumulation of these nanomaterials. Although the toxicity of TiO2 NPs has been extensively studied, their impact on gut microbiota in vivo still needs further research. In this study, TiO2 NPs with two main crystalline phases anatase and rutile were orally administrated to mice for 28 days. The dynamic influences of anatase and rutile on gut microbiota structures were investigated at doses equivalent to those consumed by people who love to eat candies. The results showed that titanium accumulated in the spleen, lung, and kidney but had no significant effects on organ histology. Gavage of rutile NPs but not anatase NPs resulted in longer intestinal villi and irregular arrangement of villus epithelial cells. Treatment with TiO2 NPs did not decrease gut microbiota diversity but shifted their structures in a time-dependent manner. Rutile NPs had a more pronounced influence on the gut microbiota than anatase NPs. The most influenced phylum was Proteobacteria, which was significantly increased by rutile but not by anatase. At the genus level, Prevotella was significantly decreased by both the TiO2 NPs, Rhodococcus was enriched by rutile NPs, and Bacteroides was increased by anatase NPs. Overall, these results suggested that chronic overconsumption of TiO2 NP-containing foods is likely to deteriorate the gastrointestinal tract and change the structures of microbiota. The crystalline phases may play an important role in mediating the intestinal impact of TiO2 NPs.
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Affiliation(s)
- Juan Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterial & Nanosafety, Institute of High Energy Physics, Chinese Academy of Science (CAS), Beijing 100049, China.
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Dynamic Dispersal of Surface Layer Biofilm Induced by Nanosized TiO 2 Based on Surface Plasmon Resonance and Waveguide. Appl Environ Microbiol 2018; 84:AEM.00047-18. [PMID: 29500260 DOI: 10.1128/aem.00047-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 02/11/2018] [Indexed: 01/01/2023] Open
Abstract
Pollutant degradation is present mainly in the surface layer of biofilms, and the surface layer is the most vulnerable to impairment by toxic pollutants. In this work, the effects of nanosized TiO2 (n-TiO2) on the average thicknesses of Bacillus subtilis biofilm and on bacterial attachment on different surfaces were investigated. The binding mechanism of n-TiO2 to the cell surface was also probed. The results revealed that n-TiO2 caused biofilm dispersal and the thicknesses decreased by 2.0 to 2.6 μm after several hours of exposure. The attachment abilities of bacteria with extracellular polymeric substances (EPS) on hydrophilic surfaces were significantly reduced by 31% and 81% under 10 and 100 mg/liter of n-TiO2, respectively, whereas those of bacteria without EPS were significantly reduced by 43% and 87%, respectively. The attachment abilities of bacteria with and without EPS on hydrophobic surfaces were significantly reduced by 50% and 56%, respectively, under 100 mg/liter of n-TiO2 The results demonstrated that biofilm dispersal can be attributed to the changes in the cell surface structure and the reduction of microbial attachment ability.IMPORTANCE Nanoparticles can penetrate into the outer layer of biofilm in a relatively short period and can bind onto EPS and bacterial surfaces. The current work probed the effects of nanosized TiO2 (n-TiO2) on biofilm thickness, bacterial migration, and surface properties of the cell in the early stage using the surface plasmon resonance waveguide mode. The results demonstrated that n-TiO2 decreased the adhesive ability of both cell and EPS and induced bacterial migration and biofilm detachment in several hours. The decreased adhesive ability of microbes and EPS worked against microbial aggregation, reducing the effluent quality in the biological wastewater treatment process.
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Kwak BS, Do JY, Park NK, Kang M. Surface modification of layered perovskite Sr 2TiO 4 for improved CO 2 photoreduction with H 2O to CH 4. Sci Rep 2017; 7:16370. [PMID: 29180791 PMCID: PMC5704012 DOI: 10.1038/s41598-017-16605-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 11/10/2017] [Indexed: 11/18/2022] Open
Abstract
Layered perovskite Sr2TiO4 photocatalyst was synthesized by using sol-gel method with citric acid. In order to increase the surface area of layered perovskite Sr2TiO4, and thus to improve its photocatalytic activity for CO2 reduction, its surface was modified via hydrogen treatment or exfoliation. The physical and chemical properties of the prepared catalysts were characterized by X-ray diffraction, high-resolution transmission electron microscopy, elemental mapping analysis, energy-dispersive X-ray spectroscopy, N2 adsorption-desorption, UV-Vis spectroscopy, X-ray photoelectron spectroscopy, photoluminescence, and electrophoretic light scattering. CO2 photoreduction was performed in a closed reactor under 6 W/cm2 UV irradiation. The gaseous products were analyzed using a gas chromatograph equipped with flame ionization and thermal conductivity detectors. The exfoliated Sr2TiO4 catalyst (E-Sr2TiO4) exhibited a narrow band gap, a large surface area, and high dispersion. Owing to these advantageous properties, E-Sr2TiO4 photocatalyst showed an excellent catalytic performance for CO2 photoreduction reaction. The rate of CH4 production from the photoreduction of CO2 with H2O using E-Sr2TiO4 was about 3431.77 μmol/gcat after 8 h.
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Affiliation(s)
- Byeong Sub Kwak
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Jeong Yeon Do
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - No-Kuk Park
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Misook Kang
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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47
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Amde M, Liu JF, Tan ZQ, Bekana D. Transformation and bioavailability of metal oxide nanoparticles in aquatic and terrestrial environments. A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 230:250-267. [PMID: 28662490 DOI: 10.1016/j.envpol.2017.06.064] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 06/09/2017] [Accepted: 06/19/2017] [Indexed: 05/24/2023]
Abstract
Metal oxide nanoparticles (MeO-NPs) are among the most consumed NPs and also have wide applications in various areas which increased their release into the environmental system. Aquatic (water and sediments) and terrestrial compartments are predicted to be the destination of the released MeO-NPs. In these compartments, the particles are subjected to various dynamic processes such as physical, chemical and biological processes, and undergo transformations which drive them away from their pristine state. These transformation pathways can have strong implications for the fate, transport, persistence, bioavailability and toxic-effects of the NPs. In this critical review, we provide the state-of-the-knowledge on the transformation processes and bioavailability of MeO-NPs in the environment, which is the topic of interest to researchers. We also recommend future research directions in the area which will support future risk assessments by enhancing our knowledge of the transformation and bioavailability of MeO-NPs.
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Affiliation(s)
- Meseret Amde
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing-Fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Zhi-Qiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Deribachew Bekana
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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48
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Guzmán E, Santini E, Ferrari M, Liggieri L, Ravera F. Effect of the Incorporation of Nanosized Titanium Dioxide on the Interfacial Properties of 1,2-Dipalmitoyl-sn-glycerol-3-phosphocholine Langmuir Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10715-10725. [PMID: 28926262 DOI: 10.1021/acs.langmuir.7b02484] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of the incorporation of hydrophilic titanium dioxide (TiO2) nanoparticles on the interfacial properties of Langmuir monolayers of 1,2-dipalmitoyl-sn-glycerol-3-phosphocholine (DPPC) has been evaluated combining interfacial thermodynamic studies, dilatational rheology, and Brewster angle microscopy (BAM). The results show that the TiO2 nanoparticles are able to penetrate DPPC layers, modifying the organization of the molecules and, consequently, the phase behavior and viscoelastic properties of the systems. Measurements of dilational viscoelasticity against the frequency have been performed, using the oscillatory barrier method, at different values of the surface pressure corresponding to different degrees of compression of the monolayer. The presence of TiO2 nanoparticles also affects the dynamic response of the monolayer modifying both the quasi-equilibrium dilatational elasticity and the high frequency limit of the viscoelastic modulus. The principal aim of this work is to understand the fundamental physicochemical bases related to the incorporation of specific nanoparticles of technological interest into the interfacial layer with biological relevance such as phospholipid layers. This can provide information on potential adverse effects of nanoparticles for health and the environment.
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Affiliation(s)
- Eduardo Guzmán
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
- Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid , Ciudad Universitaria s/n, 28040 Madrid, Spain
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XIII, n.1, 28040 Madrid, Spain
| | - Eva Santini
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Michele Ferrari
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Libero Liggieri
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
| | - Francesca Ravera
- Istituto di Chimica della Materia Condensata e di Tecnologia per l'Energia, UOS Genova-Consiglio Nazionale delle Ricerche (ICMATE-CNR) , Via De Marini 6, 16149 Genoa, Italy
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