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Khalaf MM, Abd El-Lateef HM, Mohamed IMA. Novel electrocatalysts for ethylene glycol oxidation based on functionalized phosphates of bimetals Mn/Ni: Morphology, crystallinity, and electrocatalytic performance. SURFACES AND INTERFACES 2023; 38:102850. [DOI: 10.1016/j.surfin.2023.102850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Yun Y, Lu Z, Jiao X, Xue P, Sun W, Qiao Y, Liu Y. Involvement of O 2·- release in zearalenone-induced hormesis of intestinal porcine enterocytes: An electrochemical sensor-based analysis. Bioelectrochemistry 2022; 144:108049. [PMID: 35016067 DOI: 10.1016/j.bioelechem.2021.108049] [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: 10/20/2021] [Revised: 12/19/2021] [Accepted: 12/30/2021] [Indexed: 11/20/2022]
Abstract
Relationship between mycotoxin-induced hormesis and reactive oxygen species (ROS) has not been systematically investigated due to the lack of an effective analysis method. To monitor cellular release and intracellular level of O2·-, carboxymethyl cellulose-Mn3(PO4)2 nanocomposite was synthesized to fabricate an electrochemical biosensor, which selectively detects O2·- over the range of 57.50 nM ∼ 2.95 μM (R2 = 0.99) with the sensitivity of 78.67 μA μM-1 cm-2 and the detection limit of 8.47 nM. Transient exposure to zearalenone (ZEA) induces the enhancement on cell viability, immediate O2·- release from cells, and reduction of intracellular O2·- level. After post-treatment culture, intracellular O2·- initially increases to a high level and then decreases to the normal level. Concurrently, the ZEA-induced hormesis disappears. Based on the findings, we propose a mechanism, involving the ROS release, increase of succinate dehydrogenase activity and recovery of intracellular ROS, to explain the occurrence and disappearance of hormesis in intestinal porcine enterocytes.
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Affiliation(s)
- Yanjing Yun
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials & Energy, Southwest University, No. 1 Tiansheng Road, Chongqing 400715, PR China; Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, No.1 Tiansheng Road, Chongqing 400715, PR China
| | - Zhisong Lu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials & Energy, Southwest University, No. 1 Tiansheng Road, Chongqing 400715, PR China; Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, No.1 Tiansheng Road, Chongqing 400715, PR China.
| | - Xiaodan Jiao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials & Energy, Southwest University, No. 1 Tiansheng Road, Chongqing 400715, PR China; Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, No.1 Tiansheng Road, Chongqing 400715, PR China
| | - Peng Xue
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials & Energy, Southwest University, No. 1 Tiansheng Road, Chongqing 400715, PR China; Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, No.1 Tiansheng Road, Chongqing 400715, PR China
| | - Wei Sun
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China
| | - Yan Qiao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials & Energy, Southwest University, No. 1 Tiansheng Road, Chongqing 400715, PR China; Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, No.1 Tiansheng Road, Chongqing 400715, PR China.
| | - Yang Liu
- School of Food Science and Engineering, Foshan University/Quality Control Technical Center (Foshan) of National Famous and Special Agricultural Products (CAQS-GAP-KZZX043), Foshan 528231, Guangdong, PR China.
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In vivo self-degradable graphene nanomedicine operated by DNAzyme and photo-switch for controlled anticancer therapy. Biomaterials 2020; 263:120402. [PMID: 32977256 DOI: 10.1016/j.biomaterials.2020.120402] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/10/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022]
Abstract
Although graphene oxide (GO) possesses many beneficial functionalities for biomedical usage as itself, modification of GO surface with several polymers or protein is inevitable for in vivo applications; however, such modification limits the degradability of GO due to the steric hindrance. In that context, designing of a surface modified GO carrier that is going to be degraded after its biological function (i.e., drug delivery) is highly desired, especially at complex in vivo level. Herein, we design an unprecedented "catalytic GO nanomedicine" by applying the catalytic DNA, achieving self-degradation of GO in systemic level in the body after the therapy following surface modification. Once the catalytic GO nanomedicines are taken up by mucin1 (MUC1) aptamer-facilitated endocytosis, a photo-switch triggers the release of doxorubicin from the DNA. The single stranded G-quadruplex sequence on the surface of GO forms a quartet structure and becomes DNAzyme by binding with hemin on the GO surface, exhibiting peroxidase effect. Due to the high H2O2 concentration in cancer cells, the catalytic GO nanomedicine generates sufficient amount of strong oxidant, hypochlorous acid (HOCl), inducing GO degradation into small fragments for potential clearance. We demonstrate the potential of our catalytic GO nanomedicine for both therapy and degradation at cellular and complex in vivo environment.
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Kumaravel S, Kumar MP, Thiruvengetam P, Bandla N, Sankar SS, Ravichandran S, Kundu S. Intervening Bismuth Tungstate with DNA Chain Assemblies: A Perception toward Feedstock Conversion via Photoelectrocatalytic Water Splitting. Inorg Chem 2020; 59:14501-14512. [PMID: 32924460 DOI: 10.1021/acs.inorgchem.0c02296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An advanced approach with DNA-mediated bismuth tungstate (Bi2WO6) one-dimensional (1-D) nanochain assemblies for hydrogen production with 5-fold enhanced photoelectrochemical (PEC) water splitting reaction is presented. The creation of new surface states upon DNA modification mediates the electron transfer in a facile manner for a better PEC process. The UV-Vis-DRS analysis results a red shift in the optical absorption phenomenon with the interference of DNA modification on Bi2WO6, and, thus, the band gap was tuned from 3.05 eV to 2.71 eV. The applied bias photon-to-current efficiency (ABPE) was calculated and shows a maximum for the Bi2WO6@DNA-2 (25.22 × 10-4%), compared to pristine Bi2WO6 (7.76 × 10-4%). Furthermore, the idea of practical utility of produced hydrogen from PEC is established for the first time with photocatalytic feedstock conversion to platform chemicals using cinnamaldehyde, 2-hydroxy-1-phenylethanone, and 2-(3-methoxyphenoxy)-1-phenylethanone in large scale by hydrogenation and/or hydrogenolysis reactions under eco-friendly green conditions with external hydrogen pressure in an aqueous mixture. Also, the recyclability experiment delivered good yields, which further confirm the robustness of the developed catalyst.
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Affiliation(s)
- Sangeetha Kumaravel
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - M Praveen Kumar
- Electro Inorganic Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi-630003, Tamil Nadu, India
| | | | - Nischala Bandla
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Selvasundarasekar Sam Sankar
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Subbiah Ravichandran
- Electro Inorganic Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Subrata Kundu
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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Hierarchically nanostructured Ni(OH)2–MnO2@C ternary composites derived from Ni-MOFs grown on nickel foam as high-performance integrated electrodes for hybrid supercapacitors. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136139] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wang Y, Wang D, Sun LH, Xue P, Wang MQ, Lu Z, Wang F, Xia Q, Xu MW, Bao SJ. Constructing high effective nano-Mn 3(PO 4) 2-chitosan in situ electrochemical detection interface for superoxide anions released from living cell. Biosens Bioelectron 2019; 133:133-140. [PMID: 30925362 DOI: 10.1016/j.bios.2019.03.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 01/02/2023]
Abstract
Monitoring superoxide anions in living cells have attracted much academic and biomedical interest due to their important role in metabolic processes. Herein, we confined ultra-small nano-Mn3(PO4)2 in chitosan and designed a unique puffy woven sphere consisted by nanowires. Further constructed an effective in situ detection chip using the as-synthesized nano-Mn3(PO4)2-chitosan for electrochemical sensing of superoxide anions from murine breast tumor cells (4T1). The excellent biocompatibility of chitosan and large size of the Mn3(PO4)2-chitosan spheres greatly reduced the damage and toxicity of the detection interface to the living cells, while the ultra-small nano-Mn3(PO4)2 in chitosan could effectively catalyze the superoxide anions released from cells. The nano-Mn3(PO4)2-chitosan-based sensor exhibited high sensitivity (1.6 μA μM-1), low detection limit (9.4 nM at S/N = 3) and good selectivity for O2•-. After cell culture on the surface of nano-Mn3(PO4)2-chitosan based electrode. As a miniature analytical and sensing platform, results further suggest that the prepared chip offers a more sensitive detective superoxide anions (O2•-) released from 4T1 cell lines than traditional electron paramagnetic resonance (EPR) analysis.
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Affiliation(s)
- Ying Wang
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Deng Wang
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Li-Hong Sun
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Peng Xue
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Min-Qiang Wang
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Zhisong Lu
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, PR China; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, PR China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, PR China; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, PR China
| | - Mao-Wen Xu
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Shu-Juan Bao
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China.
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Zou Z, Ma XQ, Zou L, Shi ZZ, Sun QQ, Liu Q, Liang TT, Li CM. Tailoring pore structures with optimal mesopores to remarkably promote DNA adsorption guiding the growth of active Mn 3(PO 4) 2 toward sensitive superoxide biomimetic enzyme sensors. NANOSCALE 2019; 11:2624-2630. [PMID: 30693354 DOI: 10.1039/c8nr08829b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The great challenge in preparing a biomimetic enzyme sensor is to have sensitivity and selectivity equal to or better than its corresponding biological sensor. Porous electrodes possess a large surface area and are often used to greatly improve the sensor sensitivity. However, how to tailor the pore structure, especially the pore size distribution to further improve the sensitivity and selectivity of a biomimetic sensor, has not been investigated yet. The superoxide anion (O2˙-) plays essential roles in various biological processes and is of importance in clinical diagnosis and life science research. It is generally detected by the superoxide dismutase enzyme. Herein, we delicately tailor the pore structure of carbon nanofibers (CNFs) by pyrolysis to obtain an optimal mesopore structure for strong adsorption of DNA, followed by guiding the growth of Mn3(PO4)2 as a biomimetic enzyme toward highly sensitive detection of O2˙-. The Mn3(PO4)2-DNA/CNF sensor achieves the best sensitivity among the reported O2˙- sensors while possessing good selectivity. The enhancement mechanism is also investigated, indicating that the mesopore ratio of CNFs plays an essential role in the high sensitivity and selectivity due to their strong adsorption of DNA for guiding the growth of a large amount of uniform sensing components, Mn3(PO4)2, toward high sensitivity and selectivity. The biomimetic sensor was further used to in situ monitor O2˙- released from human keratinocyte cells and human malignant melanoma cells under drug stimulation, showing high sensitivity to real-time quantitative detection of O2˙-. This work provides a highly sensitive in situ real-time biomimetic O2˙- sensor for applications in biological research and diagnosis, while shedding light on the enhancement mechanism of the pore structure, especially the pore size distribution of a porous electrode for high performance sensing processes.
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Affiliation(s)
- Zhuo Zou
- Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing 400715, P.R. China.
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