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Halder M, Chawla V, Singh Y. Ceria nanoparticles immobilized with self-assembling peptide for biocatalytic applications. NANOSCALE 2024; 16:16887-16899. [PMID: 39175360 DOI: 10.1039/d4nr02672a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Peptide-based artificial enzymes exhibit structure and catalytic mechanisms comparable to natural enzymes but they suffer from limited reusability due to their existence in homogenous solutions. Immobilization of self-assembling peptides on the surface of nanoparticles can be used to overcome limitations associated with artificial enzymes. A high, local density of peptides can be obtained on nanoparticles to exert cooperative or synergistic effects, resulting in an accelerated rate of reaction, distinct catalytic properties, and excellent biocompatibility. In this work, we have immobilized a branched, self-assembled, and nanofibrous catalytic peptide, (C12-SHD)2KK(Alloc)-NH2, onto thiolated ceria nanoparticles to generate a heterogeneous catalyst with an enhanced number of catalytic sites. This artificial enzyme mimics the activities of esterase, phosphatase, and haloperoxidase enzymes and the catalytic efficiency remains nearly unaltered when reused. The enzyme-mimicking property is investigated for pesticide detection, bone regeneration, and antibiofouling applications. Overall, this work presents a facile approach to develop a multifunctional heterogeneous biocatalyst that addresses the challenges associated with unstable peptide-based homogeneous catalysts and, thus, shows a strong potential for industrial applications.
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Affiliation(s)
- Moumita Halder
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140 001, Punjab, India.
| | - Vatan Chawla
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140 001, Punjab, India.
| | - Yashveer Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140 001, Punjab, India.
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2
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Wu Y, Chen W, Wang C, Xing D. Overview of nanozymes with phosphatase-like activity. Biosens Bioelectron 2023; 237:115470. [PMID: 37413827 DOI: 10.1016/j.bios.2023.115470] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 07/08/2023]
Abstract
Nanomaterials with intrinsic enzyme activity, referred to as nanozymes, have attracted substantial attention in recent years. Among them, phosphatase-mimicking nanozymes have become an increasingly important focus for future research, considering that phosphatase is not only one of key enzymes for phosphorous metabolism, which is essential for many biological processes (e.g., cellular regulation and signaling), but also one of extensively used biocatalytic labels in the enzyme-linked assays as well as a powerful tool enzyme in molecular biology laboratories. Nevertheless, compared with extensive oxidoreductase-mimicking nanozymes, there are a very limited number of nanozymes with phosphatase-like activity have been explored at present. The increasing demand of complex and individualized phosphatase-involved catalytic behaviors is pushing the development of more advanced phosphatase-mimicking nanozymes. Thus, we present an overview on recently reported phosphatase-like nanozymes, providing guidelines and new insights for designing more advanced phosphatase-mimicking nanozyme with superior properties.
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Affiliation(s)
- Yudong Wu
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
| | - Wujun Chen
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
| | - Chao Wang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China.
| | - Dongming Xing
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China; School of Life Sciences, Tsinghua University, Beijing, 100084, China.
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3
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Komiyama M. Ce-based solid-phase catalysts for phosphate hydrolysis as new tools for next-generation nanoarchitectonics. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2250705. [PMID: 37701758 PMCID: PMC10494760 DOI: 10.1080/14686996.2023.2250705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 09/14/2023]
Abstract
This review comprehensively covers synthetic catalysts for the hydrolysis of biorelevant phosphates and pyrophosphates, which bridge between nanoarchitectonics and biology to construct their interdisciplinary hybrids. In the early 1980s, remarkable catalytic activity of Ce4+ ion for phosphate hydrolysis was found. More recently, this finding has been extended to Ce-based solid catalysts (CeO2 and Ce-based metal-organic frameworks (MOFs)), which are directly compatible with nanoarchitectonics. Monoesters and triesters of phosphates, as well as pyrophosphates, were effectively cleaved by these catalysts. With the use of either CeO2 nanoparticles or elegantly designed Ce-based MOF, highly stable phosphodiester linkages were also hydrolyzed. On the surfaces of all these solid catalysts, Ce4+ and Ce3+ coexist and cooperate for the catalysis. The Ce4+ activates phosphate substrates as a strong acid, whereas the Ce3+ provides metal-bound hydroxide as an eminent nucleophile. Applications of these Ce-based catalysts to practical purposes are also discussed.
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Affiliation(s)
- Makoto Komiyama
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
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4
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Miri P, Karbhal I, Satnami ML, Jena VK, Ghosh S. β-Cyclodextrin Stabilized Nanoceria for Hydrolytic Cleavage of Paraoxon in Aqueous and Cationic Micellar Media. ACS APPLIED BIO MATERIALS 2023; 6:1488-1494. [PMID: 36939183 DOI: 10.1021/acsabm.2c01030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Beta-cyclodextrin (β-CD) stabilized cerium oxide nanoparticles (β-CD@CeO2 NPs) were synthesized through a hydrothermal route. The electronic properties, surface functional group, surface composition, size, and morphologies of the as-synthesized β-CD@CeO2 NPs were characterized using UV-visible spectroscopy, FTIR analysis, high resolution X-ray photoelectron spectroscopy (HRXPS), high resolution transmission electron microscopy (HRTEM), and field emission scanning electron microscopy (FESEM). The pH-dependent variation of the ζ-potential of β-CD@CeO2 NPs and the catalytic activity of the NPs for the hydrolysis of paraoxon were investigated. The observed pseudo-first-order rate constant (kobs) for the hydrolysis of paraoxon is increased with increasing pH and the ζ-potential of β-CD@CeO2 NPs. The kinetics and mechanism of hydrolysis of paraoxon in the aqueous and cationic micellar media have been discussed.
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Affiliation(s)
- Pinki Miri
- Department of Chemistry, Government Nagarjuna Post Graduate College of Science, Raipur 492010, Chhattisgarh, India
| | - Indrapal Karbhal
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Manmohan L Satnami
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
| | - Vinod K Jena
- Department of Chemistry, Government Nagarjuna Post Graduate College of Science, Raipur 492010, Chhattisgarh, India
| | - Sanjay Ghosh
- Department of Chemistry, Government Nagarjuna Post Graduate College of Science, Raipur 492010, Chhattisgarh, India
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5
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Lu Y, Cao C, Pan X, Liu Y, Cui D. Structure design mechanisms and inflammatory disease applications of nanozymes. NANOSCALE 2022; 15:14-40. [PMID: 36472125 DOI: 10.1039/d2nr05276h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nanozymes are artificial enzymes with high catalytic activity, low cost, and good biocompatibility, and have received ever-increasing attention in recent years. Various inorganic and organic nanoparticles have been found to exhibit enzyme-like activities and are used as nanozymes for diverse biomedical applications ranging from tumor imaging and therapeutics to detection. However, their further clinical applications are hindered by the potential toxicity and long-term retention of nanomaterials in vivo. Clarifying the catalytic mechanism of nanozymes and identifying the key factors responsible for their behavior can guide the design of nanozyme structure, enlighten the ways to improve their enzyme-like activities, and minimize the dosage of nanozymes, leading to reduced toxicity to the human body for a real biomedical application prospect. In particular, inflammation occurring in numerous diseases is closely related to reactive oxygen species, and the active oxygen scavenging ability of nanozymes potentially exerts excellent therapeutic effects on inflammatory diseases. In this review, we systematically summarize the structure-activity relationship of nanozymes, including regulation strategies for size and morphology, surface structure, and composition. Based on the structure-activity mechanisms, a series of chemically designed nanozymes developed to target various inflammatory diseases are briefly summarized.
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Affiliation(s)
- Yi Lu
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment Instrument, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
| | - Cheng Cao
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment Instrument, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
| | - Xinni Pan
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanlei Liu
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment Instrument, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Centre for Intelligent Diagnosis and Treatment Instrument, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
- National Engineering Center for Nanotechnology, Shanghai 200240, People's Republic of China.
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6
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Leonard MB, Li T, Kramer MJ, McDonnell SM, Vedernikov AN, Rodriguez EE. Spectroscopic studies of methyl paraoxon decomposition over mesoporous Ce-doped titanias for toxic chemical filtration. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129536. [PMID: 35999722 DOI: 10.1016/j.jhazmat.2022.129536] [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: 05/11/2022] [Revised: 06/21/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
The ever-constant threat of chemical warfare agents (CWA) motivates the design of materials to provide better protection to warfighters and civilians. Cerium and titanium oxide are known to react with organophosphorus compounds such Sarin and Soman. To study the decomposition of methyl paraoxon (CWA simulant) on such materials, we synthesized ordered mesoporous metal oxides (MMO) TiO2, CexTi1-xO2 (x = 0.005, 0.5, 0.10, 0.15) and CeO2. We fully characterized TiO2 and Ce-doped TiO2 and found phase-pure oxides with cylindrical hexagonally packed pores and high surface areas (176-252 m2/g). Methyl paraoxon decomposition was tracked through UV/Vis and found Ce0.15Ti0.85O2 to decompose the most methyl paraoxon, but CeO2 to be the most reactive when normalized to surface area. The surface area normalized rate constant (kSA) for CeO2 was 3-4.6 times larger than that of TiO2 and the CexTi1-xO2 series. While TiO2 and CexTi1-xO2 for 0.05 ≤ x ≤ 0.10 displayed no significant differences in the kinetics, the mostly amorphous Ce0.15Ti0.85O2 displayed a slight increase in reactivity. Our findings indicate that the nature of the cation, Ce4+ vs Ti4+, is less important to methyl paraoxon reactivity on these MMOs compared to other factors such as crystal structure type.
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Affiliation(s)
- Matthew B Leonard
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Tianyu Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Morgan J Kramer
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Shannon M McDonnell
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Andrei N Vedernikov
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Efrain E Rodriguez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
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7
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Synthesis of Nanoceria with Varied Ratios of Ce 3+/Ce 4+ Utilizing Soluble Borate Glass. NANOMATERIALS 2022; 12:nano12142363. [PMID: 35889588 PMCID: PMC9323119 DOI: 10.3390/nano12142363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 12/10/2022]
Abstract
Mixed-valence cerium oxide nanoparticles (nanoceria) have been investigated with pronounced interest due to a wide range of biomedical and industrial applications that arises from its remarkable redox catalytic properties. However, there is no understanding of how to control the formation of these two types of nanoceria to obtain Ce3+/Ce4+ ratios required in various applications. In this work, using a soluble borate glass, nanoceria with specific ratios of Ce3+/Ce4+ are created and extracted via controlled glass-melting parameters. Glass embedded with nanoceria as well as nanoceria extracted from the glass were studied via XANES and fitted with the Multivariate Curve Resolution (MCR) technique to calculate the ratio of Ce3+/Ce4+. Results show that mixed-valence nanoceria with specific ratios are hermetically sealed within the glass for long durations. When the glass dissolves, the mixed-valence nanoceria are released, and the extracted nanoceria have unchanged Ce3+/Ce4+ ratios. Furthermore, TEM investigation on released nanoceria show that the nanoceria consist of several different structures. Although nanocrystal structures of Ce7O12, Ce11O20, and Ce2O3 contribute to the reduced state, a new quasi-stable phase of CeO1.66 has been observed as well.
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8
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Rasool N, Srivastava R, Singh Y. Cationized silica ceria nanocomposites to target biofilms in chronic wounds. BIOMATERIALS ADVANCES 2022; 138:212939. [PMID: 35913235 DOI: 10.1016/j.bioadv.2022.212939] [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: 01/29/2022] [Revised: 04/25/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
Altered wound healing is a major challenge faced by both developed and developing nations. Biofilm formation has been identified as one of the causative factors for the progression of chronic wounds. The spread of biofilm is controlled by inhibiting the biofilm formation or disrupting the mature biofilm. Functional nanomaterials/enzymes with antimicrobial effects, such as metal oxides, rare earth metals, and carbon nanoparticles have been investigated to treat biofilm and overcome the drawbacks associated with the antibiotic therapy. Cerium oxide nanoparticles (CNPs) have drawn significant attention as a promising antimicrobial agent owing to their antibacterial, enzyme-mimetic, and crystalline properties but they suffer from poor colloidal stability and dispersity in an aqueous environment and size-dependent function. In this work, we have developed a functionalized silica ceria nanocomposite (FSC), as an antibiotic-free system, to treat biofilms. The FSC possesses a high surface area of mesoporous silica nanoparticles (MSNs) combined with the intrinsic antibacterial activity of cerium oxide for biofilm inhibition. The nanocomposite was fabricated using silica and ceria precursors, and it exhibited a high surface area of 436 m2/g and an average particle size of around 450 nm. The physical and chemical properties of nanocomposite were characterized using FTIR, XRD, UV-Vis, BET, EDX, and XPS analysis. It exhibited a potent antioxidant activity (86%), positive haloperoxidase mimetic property, and broad-spectrum antibacterial activities. It showed 99.9% inhibition against S. aureus (Gram-positive) and 81% inhibition against E. coli (Gram-negative) within 12 and 24 h along with the significant inhibition of biofilm formation (80%) as well as the disruptive effect against the established biofilm (77%) of S. aureus. Cell viability assays indicated the proliferative nature of composite in normal basal conditions and increased cell viability (97%) in the presence of oxidative stress. Despite being a cationic nanomaterial, it showed a good hemocompatibility against human blood and caused complete wound closure in mouse fibroblast cell line within 24 h. The functionalized silica ceria nanocomposite developed has a strong potential in chronic wound healing applications.
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Affiliation(s)
- Nahida Rasool
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
| | - Rajendra Srivastava
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
| | - Yashveer Singh
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India; Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India.
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9
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Transdermal permeation of inorganic cerium salts in intact human skin. Toxicol In Vitro 2022; 82:105381. [PMID: 35561953 DOI: 10.1016/j.tiv.2022.105381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/15/2022] [Accepted: 05/06/2022] [Indexed: 11/21/2022]
Abstract
The stratum corneum protects the body against external agents, such as metals, chemicals, and toxics. Although it is considered poorly permeable to them, comprising the major barrier to the permeation of such substances, it may become a relevant gate of entry for such molecules. Cerium (Ce) is a lanthanide that is widely used in catalytic, energy, biological and medicinal applications, owing to its intrinsic structural and unique redox properties. Cerium salts used to produce cerium oxide (CeO2) nanostructures can potentially come into contact with the skin and be absorbed following dermal exposure. The objective of this study was to investigate the percutaneous absorption of three inorganic Ce salts: cerium (III) chloride (CeCl3); cerium (III) nitrate (Ce(NO3)3) and ammonium cerium (IV) nitrate (Ce(NH4)2(NO3)6), which are commonly adopted for the synthesis of CeO2 using in vitro - ex vivo technique in Franz diffusion cells. The present work shows that Ce salts cannot permeate intact human skin, but they can penetrate significantly in the epidermis (up to 0.29 μg/cm2) and, to a lesser extent in dermis (up to 0.11 μg/cm2). Further studies are required to evaluate the potential effects of long-term exposure to Ce.
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10
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Bhatt P, Pandey SC, Joshi S, Chaudhary P, Pathak VM, Huang Y, Wu X, Zhou Z, Chen S. Nanobioremediation: A sustainable approach for the removal of toxic pollutants from the environment. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128033. [PMID: 34999406 DOI: 10.1016/j.jhazmat.2021.128033] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/29/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
In recent years, the proportion of organic and inorganic contaminants has increased rapidly due to growing human interference and represents a threat to ecosystems. The removal of these toxic pollutants from the environment is a difficult task. Physical, chemical and biological methods are implemented for the degradation of toxic pollutants from the environment. Among existing technologies, bioremediation in combination with nanotechnology is the most promising and cost-effective method for the removal of pollutants. Numerous studies have shown that exceptional characteristics of nanomaterials such as improved catalysis and adsorption properties as well as high reactivity have been subjects of great interest. There is an emerging trend of employing bacterial, fungal and algal cultures and their components, extracts or biomolecules as catalysts for the sustainable production of nanomaterials. They can serve as facilitators in the bioremediation of toxic compounds by immobilizing or inducing the synthesis of remediating microbial enzymes. Understanding the association between microorganisms, contaminants and nanoparticles (NPs) is of crucial importance. In this review, we focus on the removal of toxic pollutants using the cumulative effects of nanoparticles with microbial technology and their applications in different domains. Besides, we discuss how this novel nanobioremediation technique is significant and contributes towards sustainability.
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Affiliation(s)
- Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Satish Chandra Pandey
- Cell and Molecular Biology Laboratory, Department of Zoology, Soban Singh Jeena University, Almora, Uttarakhand, India
| | - Samiksha Joshi
- School of Agriculture Graphic Era Hill University Bhimtal, 263136, India
| | - Parul Chaudhary
- Department of Microbiology, College of Basic Sciences and Humanities, G.B Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Vinay Mohan Pathak
- Department of Microbiology, University of Delhi, South Campus, 110021, India; Department of Botany & Microbiology, Gurukula Kangri (Deemed to be University), Haridwar, Uttarakhand 249404, India
| | - Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiaozhen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Zhe Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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11
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Kırkgeçit R, Özlü Torun H, Kılıç Dokan F, Öztürk E. Investigation of photochemical properties of La-Er/CeO2 and La-Y/CeO2 composites. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113602] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Li T, Tsyshevsky R, Algrim L, McEntee M, Durke EM, Eichhorn B, Karwacki C, Zachariah MR, Kuklja MM, Rodriguez EE. Understanding Dimethyl Methylphosphonate Adsorption and Decomposition on Mesoporous CeO 2. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54597-54609. [PMID: 34730932 DOI: 10.1021/acsami.1c16668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The increased risk of chemical warfare agent usage around the world has intensified the search for high-surface-area materials that can strongly adsorb and actively decompose chemical warfare agents. Dimethyl methylphosphonate (DMMP) is a widely used simulant molecule in laboratory studies for the investigation of the adsorption and decomposition behavior of sarin (GB) gas. In this paper, we explore how DMMP interacts with the as-synthesized mesoporous CeO2. Our mass spectroscopy and in situ diffuse reflectance infrared Fourier transform spectroscopy measurements indicate that DMMP can dissociate on mesoporous CeO2 at room temperature. Two DMMP dissociation pathways are observed. Based on our characterization of the as-synthesized material, we built the pristine and hydroxylated (110) and (111) CeO2 surfaces and simulated the DMMP interaction on these surfaces with density functional theory modeling. Our calculations reveal an extremely low activation energy barrier for DMMP dissociation on the (111) pristine CeO2 surface, which very likely leads to the high activity of mesoporous CeO2 for DMMP decomposition at room temperature. The two reaction pathways are possibly due to the DMMP dissociation on the pristine and hydroxylated CeO2 surfaces. The significantly higher activation energy barrier for DMMP to decompose on the hydroxylated CeO2 surface implies that such a reaction on the hydroxylated CeO2 surface may occur at higher temperatures or proceed after the pristine CeO2 surfaces are saturated.
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Affiliation(s)
- Tianyu Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Roman Tsyshevsky
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Lucas Algrim
- Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Monica McEntee
- US Army Combat Capabilities Development Command Chemical Biological Center, 8198 Blackhawk Road, Aberdeen Proving Ground, Aberdeen, Maryland 21010, United States
| | - Erin M Durke
- US Army Combat Capabilities Development Command Chemical Biological Center, 8198 Blackhawk Road, Aberdeen Proving Ground, Aberdeen, Maryland 21010, United States
| | - Bryan Eichhorn
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Christopher Karwacki
- US Army Combat Capabilities Development Command Chemical Biological Center, 8198 Blackhawk Road, Aberdeen Proving Ground, Aberdeen, Maryland 21010, United States
| | - Michael R Zachariah
- Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Maija M Kuklja
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Efrain E Rodriguez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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13
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Nasiripur P, Zangiabadi M, Baghersad MH. Visible light photocatalytic degradation of methyl parathion as chemical warfare agents simulant via GO-Fe3O4/Bi2MoO6 nanocomposite. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Saifi MA, Seal S, Godugu C. Nanoceria, the versatile nanoparticles: Promising biomedical applications. J Control Release 2021; 338:164-189. [PMID: 34425166 DOI: 10.1016/j.jconrel.2021.08.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/18/2021] [Accepted: 08/18/2021] [Indexed: 12/27/2022]
Abstract
Nanotechnology has been a boon for the biomedical field due to the freedom it provides for tailoring of pharmacokinetic properties of different drug molecules. Nanomedicine is the medical application of nanotechnology for the diagnosis, treatment and/or management of the diseases. Cerium oxide nanoparticles (CNPs) are metal oxide-based nanoparticles (NPs) which possess outstanding reactive oxygen species (ROS) scavenging activities primarily due to the availability of "oxidation switch" on their surface. These NP have been found to protect from a number of disorders with a background of oxidative stress such as cancer, diabetes etc. In fact, the CNPs have been found to possess the environment-dependent ROS modulating properties. In addition, the inherent catalase, SOD, oxidase, peroxidase and phosphatase mimetic properties of CNPs provide them superiority over a number of NPs. Further, chemical reactivity of CNPs seems to be a function of their surface chemistry which can be precisely tuned by defect engineering. However, the contradictory reports make it necessary to critically evaluate the potential of CNPs, in the light of available literature. The review is aimed at probing the feasibility of CNPs to push towards the clinical studies. Further, we have also covered and censoriously discussed the suspected negative impacts of CNPs before making our way to a consensus. This review aims to be a comprehensive, authoritative, critical, and accessible review of general interest to the scientific community.
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Affiliation(s)
- Mohd Aslam Saifi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Sudipta Seal
- University of Central Florida, 12760 Pegasus Drive ENG I, Suite 207, Orlando, FL 32816, USA
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India.
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15
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Popov AL, Abakumov MA, Savintseva IV, Ermakov AM, Popova NR, Ivanova OS, Kolmanovich DD, Baranchikov AE, Ivanov VK. Biocompatible dextran-coated gadolinium-doped cerium oxide nanoparticles as MRI contrast agents with high T 1 relaxivity and selective cytotoxicity to cancer cells. J Mater Chem B 2021; 9:6586-6599. [PMID: 34369536 DOI: 10.1039/d1tb01147b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Gd-based complexes are widely used as magnetic resonance imaging (MRI) contrast agents. The safety of previously approved contrast agents is questionable and is being re-assessed. The main causes of concern are possible gadolinium deposition in the brain and the development of systemic nephrogenic fibrosis after repeated use of MRI contrasts. Thus, there is an urgent need to develop a new generation of MRI contrasts that are safe and that have high selectivity in tissue accumulation with improved local contrast. Here, we report on a new type of theranostic MRI contrast, namely dextran stabilised, gadolinium doped cerium dioxide nanoparticles. These ultra-small (4-6 nm) Ce0.9Gd0.1O1.95 nanoparticles have been shown to possess excellent colloidal stability and high r1-relaxivity (3.6 mM-1 s-1). They are effectively internalised by human normal and cancer cells and demonstrate dose-dependent selective cytotoxicity to cancer cells.
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Affiliation(s)
- A L Popov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky av., 31, Moscow 119991, Russia.
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16
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Wu Y, Ta HT. Different approaches to synthesising cerium oxide nanoparticles and their corresponding physical characteristics, and ROS scavenging and anti-inflammatory capabilities. J Mater Chem B 2021; 9:7291-7301. [PMID: 34355717 DOI: 10.1039/d1tb01091c] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The biological applications of cerium oxide nanoparticles (nanoceria) have received extensive attention in recent decades. The coexistence of trivalent cerium and tetravalent cerium on the surface of nanoceria allows the scavenging of reactive oxygen species (ROS). The regeneratable changes between Ce3+ and Ce4+ make nanoceria a suitable therapeutic agent for treating ROS-related diseases and inflammatory diseases. The size, morphology and Ce3+/Ce4+ state of cerium oxide nanoparticles are affected by the synthesis method. This review focuses on various synthesis methods of cerium oxide nanoparticles and discusses their corresponding physical characteristics, and anti-ROS and anti-inflammatory properties.
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Affiliation(s)
- Yuao Wu
- Queensland Micro- and Nanotechnology, Griffith University, Nathan, Queensland 4111, Australia.
| | - Hang T Ta
- Queensland Micro- and Nanotechnology, Griffith University, Nathan, Queensland 4111, Australia. and School of Environment and Science, Griffith University, Nathan, Queensland 4111, Australia and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia
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17
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18
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Walther R, Huynh TH, Monge P, Fruergaard AS, Mamakhel A, Zelikin AN. Ceria Nanozyme and Phosphate Prodrugs: Drug Synthesis through Enzyme Mimicry. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25685-25693. [PMID: 34033459 DOI: 10.1021/acsami.1c03890] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanozymes can mimic the activities of diverse enzymes, and this ability finds applications in analytical sciences and industrial chemistry, as well as in biomedical applications. Among the latter, prodrug conversion mediated by nanozymes is investigated as a step toward site-specific drug synthesis, to achieve localized therapeutic effects. In this work, we investigated a ceria nanozyme as a mimic to phosphatase, to mediate conversion of phosphate prodrugs into corresponding therapeutics. To this end, the substrate scope of ceria as a phosphatase mimic was analyzed using a broad range of natural phosphor(di)esters and pyrophosphates. Knowledge of this scope guided the selection of existing phosphate prodrugs that can be converted by ceria into the corresponding therapeutics. "Extended scaffold phosphates" were engineered using self-immolative linkers to accommodate a prodrug design for amine-containing drugs, such as monomethyl auristatin E. Phosphate prodrugs masked activity of the toxin, whereas prodrug conversion mediated by the nanozyme restored drug toxicity, which was validated in mammalian cell culture. The main novelty of this work lies in the rational pairing of the ceria nanozyme with the existing and the de novo designed "extended scaffold" phosphate prodrugs toward their use in nanozyme-prodrug therapy based on the defined nanozyme substrate scope.
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Affiliation(s)
- Raoul Walther
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | - Tin H Huynh
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | - Pere Monge
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | | | - Aref Mamakhel
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | - Alexander N Zelikin
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
- iNano Interdisciplinary Nanoscience Center, Aarhus University, Aarhus C 8000, Denmark
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19
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Skin decontamination procedures against potential hazards substances exposure. Chem Biol Interact 2021; 344:109481. [PMID: 34051209 DOI: 10.1016/j.cbi.2021.109481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/20/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
Decontamination of unprotected skin areas is crucial to prevent excessive penetration of chemical contaminants after criminal or accidental release. A review of literature studies was performed to identify the available decontamination methods adopted to treat skin contamination after chemical, radiological and metal exposures. In this bibliographic review, an overview of the old and recent works on decontamination procedures followed in case of potential hazards substances contaminations with a comparison between these systems are provided. Almost all data from our 95 selected studies conducted in vitro and in vivo revealed that a rapid skin decontamination process is the most efficient way to reduce the risk of intoxication. The commonly-used or recommended conventional procedures are simple rinsing with water only or soapy water. However, this approach has some limitations because an easy removal by flushing may not be sufficient to decontaminate all chemical deposited on the skin, and skin absorption can be enhanced by the wash-in effect. Other liquid solutions or systems as adsorbent powders, mobilizing agents, chelation therapy are also applied as decontaminants, but till nowadays does not exist a decontamination method which can be adopted in all situations. Therefore, there is an urgent need to develop more efficient and successful decontaminating formulations.
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20
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Hartati YW, Topkaya SN, Gaffar S, Bahti HH, Cetin AE. Synthesis and characterization of nanoceria for electrochemical sensing applications. RSC Adv 2021; 11:16216-16235. [PMID: 35479153 PMCID: PMC9031634 DOI: 10.1039/d1ra00637a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/24/2021] [Accepted: 04/25/2021] [Indexed: 12/16/2022] Open
Abstract
Nanoceria (cerium oxide nanoparticles: CeO2-NPs) has received significant attention due to its biocompatibility, good conductivity, and the ability to transfer oxygen. Nanoceria has been widely used to develop electrochemical sensors and biosensors as it could increase response time, sensitivity, and stability of the sensor. In this review, we discussed synthesis methods, and the recent applications employing CeO2-NPs for electrochemical detection of various analytes reported in the most recent four years.
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Affiliation(s)
- Yeni Wahyuni Hartati
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Indonesia
| | - Seda Nur Topkaya
- Department of Analytical Chemistry, Faculty of Pharmacy, Izmir Katip Celebi University Turkey
| | - Shabarni Gaffar
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Indonesia
| | - Husein H Bahti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Indonesia
| | - Arif E Cetin
- Izmir Biomedicine and Genome Center Izmir Turkey
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21
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Zhan SW, Tseng WB, Tseng WL. Impact of nanoceria shape on degradation of diethyl paraoxon: Synthesis, catalytic mechanism, and water remediation application. ENVIRONMENTAL RESEARCH 2020; 188:109653. [PMID: 32526493 DOI: 10.1016/j.envres.2020.109653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 04/08/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
A series of nanomaterials have been demonstrated to be powerful for direct degradation of diethyl paraoxon (EP) to diethyl phosphate and 4-nitrophenol in aqueous solution. However, comparison of catalytic activity of different nanomaterials toward EP is rarely explored. In the present study, four different morphological nanoceria (cubes, rods, polyhedral, and spheres) were synthesized, characterized, and evaluated as a catalyst for the degradation of EP in comparison to other commercially available nanomaterials. Among the tested nanoceria, the cerium dioxide (CeO2) nanopolyhedra possess the best catalytic activity toward the hydrolysis of EP owing to their abundant oxygen vacancy sites, optimal ratio of Ce(III) to Ce(IV), and specific exposed facets. Under the conditions of 0.2 M NH3/NH4Cl buffer and 25 °C, the CeO2 nanopolyhedra catalyzed the reduction of EP to 4-nitrophenol with a >99% conversion at pH 8.0 for 50 h, at pH 10.0 for 12 h, and at pH 12.0 for 2.5 h. The catalytic degradation of nearly 100% EP in NH3/NH4Cl buffer (pH 10.0) at 25 °C is in the decreasing order of CeO2 nanopolyhedra > CeO2 nanorods > ZnO nanospheres (NSs) > CeO2 nanocubes > TiO2 NSs > CeO2 NSs > Fe3O4 NSs ~ Co3O4 NSs ~ control experiment. The mechanism for the degradation of EP was confirmed by monitoring catalytic kinetics of the CeO2 nanopolyhedra in the presence of EP, dimethyl paraoxon, 4-nitrophenyl phosphate, and parathion. The nanocomposites were simply fabricated by electrostatic self-assembly of the CeO2 nanopolyhedra and poly(diallyldimethylammonium chloride)-capped gold nanoparticles (PDDA-AuNPs). The resultant nanocomposites still efficiently catalyzed NaBH4-mediated reduction of 4-nitrophenol to 4-aminophenol with a normalized rate constant of 6.68 ± 0.72 s-1 g-1 and a chemoselectivity of >99%. In confirmation of the robustness and applicability of the as-prepared nanocomposites, they were further used to catalyze the degradation of EP to 4-amionphenol in river water and seawater.
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Affiliation(s)
- Shi-Wei Zhan
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung, 80424, Taiwan
| | - Wei-Bin Tseng
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung, 80424, Taiwan; Department of College of Ecology and Resource Engineering, Wuyi University, Fujian, 354300, China
| | - Wei-Lung Tseng
- Department of Chemistry, National Sun Yat-sen University, No. 70, Lien-hai Road, Gushan District, Kaohsiung, 80424, Taiwan; School of Pharmacy, Kaohsiung Medical University, No. 100, Shiquan 1st Road, Sanmin District, Kaohsiung, 80708, Taiwan.
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22
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Chan WS, Wong GF, Hung CW, Wong YN, Fung KM, Lee WK, Dao KL, Leung CW, Lo KM, Lee WM, Cheung BKK. Interpol review of toxicology 2016-2019. Forensic Sci Int Synerg 2020; 2:563-607. [PMID: 33385147 PMCID: PMC7770452 DOI: 10.1016/j.fsisyn.2020.01.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/13/2022]
Abstract
This review paper covers the forensic-relevant literature in toxicology from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20.Papers%202019.pdf.
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23
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Denet E, Espina-Benitez MB, Pitault I, Pollet T, Blaha D, Bolzinger MA, Rodriguez-Nava V, Briançon S. Metal oxide nanoparticles for the decontamination of toxic chemical and biological compounds. Int J Pharm 2020; 583:119373. [PMID: 32339629 DOI: 10.1016/j.ijpharm.2020.119373] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 11/20/2022]
Abstract
For several years, the international context is deeply affected by the use of chemical and biological weapons. The use of CBRN (Chemical Biological Radiological Nuclear) threat agents from military stockpiles or biological civilian industry demonstrate the critical need to improve capabilities of decontamination for civilians and military. Physical decontamination systems that operate only by adsorption and displacement such as Fuller's Earth, have the drawback of not neutralizing hazardous agents, giving place to cross contaminations. Consequently, the development of a formulation based on metal oxide nanoparticles attracts considerable interest, since they offer physicochemical properties that allow them to both adsorb and degrade toxic compounds. Thus, the aim of this study is to found metal oxide nanoparticles with a versatile activity on both chemical and biological toxic agents. Therefore, several metal oxides such as MgO, TiO2, CeO2, ZnO and ZrO2 were characterized and their decontamination kinetics of less-toxic surrogate of VX, paraoxon, were studied in vitro. To determine the antimicrobial activity of these nanoparticles, simulants of biological terrorist threat were used by performing a 3-hours decontamination kinetics. This proof-of-concept study showed that MgO is the only one that exhibits both chemical and antibacterial actions but without sporicidal activity.
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Affiliation(s)
- Elodie Denet
- Université Claude Bernard Lyon 1, Laboratoire d'Ecologie Microbienne (UMR CNRS 5557, INRAe 1418), Villeurbanne, France.
| | - Maria Betzabeth Espina-Benitez
- Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France; Université Claude Bernard Lyon 1, Laboratoire de Dermopharmacie et Cosmétologie, Institut des Sciences Pharmaceutiques et Biologique, F-69373 Villeurbanne, France.
| | - Isabelle Pitault
- Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France
| | | | - Didier Blaha
- Université Claude Bernard Lyon 1, Laboratoire d'Ecologie Microbienne (UMR CNRS 5557, INRAe 1418), Villeurbanne, France
| | - Marie-Alexandrine Bolzinger
- Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France; Université Claude Bernard Lyon 1, Laboratoire de Dermopharmacie et Cosmétologie, Institut des Sciences Pharmaceutiques et Biologique, F-69373 Villeurbanne, France
| | - Veronica Rodriguez-Nava
- Université Claude Bernard Lyon 1, Laboratoire d'Ecologie Microbienne (UMR CNRS 5557, INRAe 1418), Villeurbanne, France
| | - Stéphanie Briançon
- Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France; Université Claude Bernard Lyon 1, Laboratoire de Dermopharmacie et Cosmétologie, Institut des Sciences Pharmaceutiques et Biologique, F-69373 Villeurbanne, France.
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24
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Nyoka M, Choonara YE, Kumar P, Kondiah PPD, Pillay V. Synthesis of Cerium Oxide Nanoparticles Using Various Methods: Implications for Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E242. [PMID: 32013189 PMCID: PMC7075153 DOI: 10.3390/nano10020242] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 12/12/2022]
Abstract
Cerium oxide nanoparticles have been used in a number of non-medical products over the years. The therapeutic application of these nanoparticles has mainly been due to their oxidative stress ameliorating abilities. Their enzyme-mimetic catalytic ability to change between the Ce3+ and Ce4+ species makes them ideal for a role as free-radical scavengers for systemic diseases as well as neurodegenerative diseases. In this review, we look at various methods of synthesis (including the use of stabilizing/capping agents and precursors), and how the synthesis method affects the physicochemical properties, their behavior in biological environments, their catalytic abilities as well as their reported toxicity.
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Affiliation(s)
| | | | | | | | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutics Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; (M.N.); (Y.E.C.); (P.K.); (P.P.D.K.)
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25
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Trenque I, Magnano GC, Bárta J, Chaput F, Bolzinger MA, Pitault I, Briançon S, Masenelli-Varlot K, Bugnet M, Dujardin C, Čuba V, Amans D. Synthesis routes of CeO2 nanoparticles dedicated to organophosphorus degradation: a benchmark. CrystEngComm 2020. [DOI: 10.1039/c9ce01898k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Exposure to nerve agents, in military conflicts or terrorist acts, requires efficient decontamination systems. CeO2 nanoparticles appear efficient against organophosphorus compounds, thus we performed a benchmark on the available synthesis routes.
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Affiliation(s)
| | | | - Jan Bárta
- Czech Technical University in Prague
- Faculty of Nuclear Sciences and Physical Engineering
- Prague 1
- Czech Republic
- Academy of Sciences of the Czech Republic
| | - Frédéric Chaput
- Ecole Normale Supérieure de Lyon
- Laboratoire de Chimie
- CNRS UMR5182
- Lyon
- France
| | | | | | | | | | | | | | - Václav Čuba
- Czech Technical University in Prague
- Faculty of Nuclear Sciences and Physical Engineering
- Prague 1
- Czech Republic
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