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Farruggia G, Anconelli L, Galassi L, Voltattorni M, Rossi M, Lodeserto P, Blasi P, Orienti I. Nano-fenretinide demonstrates remarkable activity in acute promyeloid leukemia cells. Sci Rep 2024; 14:13737. [PMID: 38877119 PMCID: PMC11178801 DOI: 10.1038/s41598-024-64629-w] [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: 12/15/2023] [Accepted: 03/26/2024] [Indexed: 06/16/2024] Open
Abstract
Acute promyelocytic leukemia (APL) is characterized by rearrangements of the retinoic acid receptor, RARα, which makes all-trans retinoic acid (ATRA) highly effective in the treatment of this disease, inducing promyelocytes differentiation. Current therapy, based on ATRA in combination with arsenic trioxide, with or without chemotherapy, provides high rates of event-free survival and overall survival. However, a decline in the drug activity, due to increased ATRA metabolism and RARα mutations, is often observed over long-term treatments. Furthermore, dedifferentiation can occur providing relapse of the disease. In this study we evaluated fenretinide, a semisynthetic ATRA derivative, encapsulated in nanomicelles (nano-fenretinide) as an alternative treatment to ATRA in APL. Nano-fenretinide was prepared by fenretinide encapsulation in a self-assembling phospholipid mixture. Physico-chemical characterization was carried out by dinamic light scattering and spectrophotometry. The biological activity was evaluated by MTT assay, flow cytometry and confocal laser-scanning fluorescence microscopy. Nano-fenretinide induced apoptosis in acute promyelocytic leukemia cells (HL60) by an early increase of reactive oxygen species and a mitochondrial potential decrease. The fenretinide concentration that induced 90-100% decrease in cell viability was about 2.0 µM at 24 h, a concentration easily achievable in vivo when nano-fenretinide is administered by oral or intravenous route, as demonstrated in previous studies. Nano-fenretinide was effective, albeit at slightly higher concentrations, also in doxorubicin-resistant HL60 cells, while a comparison with TK6 lymphoblasts indicated a lack of toxicity on normal cells. The results indicate that nano-fenretinide can be considered an alternative therapy to ATRA in acute promyelocytic leukemia when decreased efficacy, resistance or recurrence of disease emerge after protracted treatments with ATRA.
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Affiliation(s)
- Giovanna Farruggia
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40126, Bologna, Italy
- National Institute of Biostructures and Biosystems, Via Delle Medaglie d'Oro 305, 00136, Rome, Italy
| | - Lorenzo Anconelli
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy
| | - Lucrezia Galassi
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40126, Bologna, Italy
| | - Manuela Voltattorni
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy
| | - Martina Rossi
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40126, Bologna, Italy
| | - Pietro Lodeserto
- Section of Endocrinology and Metabolic Diseases, Department of Systems Medicine, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Paolo Blasi
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy.
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40126, Bologna, Italy.
| | - Isabella Orienti
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 19/2, 40127, Bologna, Italy.
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Griffith M, Araújo A, Travasso R, Salvador A. The architecture of redox microdomains: Cascading gradients and peroxiredoxins' redox-oligomeric coupling integrate redox signaling and antioxidant protection. Redox Biol 2024; 69:103000. [PMID: 38150990 PMCID: PMC10829873 DOI: 10.1016/j.redox.2023.103000] [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: 10/13/2023] [Revised: 12/07/2023] [Accepted: 12/14/2023] [Indexed: 12/29/2023] Open
Abstract
In the cytosol of human cells under low oxidative loads, hydrogen peroxide is confined to microdomains around its supply sites, due to its fast consumption by peroxiredoxins. So are the sulfenic and disulfide forms of the 2-Cys peroxiredoxins, according to a previous theoretical analysis [Travasso et al., Redox Biology 15 (2017) 297]. Here, an extended reaction-diffusion model that for the first time considers the differential properties of human peroxiredoxins 1 and 2 and the thioredoxin redox cycle predicts important new aspects of the dynamics of redox microdomains. The peroxiredoxin 1 sulfenates and disulfides are more localized than the corresponding peroxiredoxin 2 forms, due to the former peroxiredoxin's faster resolution step. The thioredoxin disulfides are also localized. As the H2O2 supply rate (vsup) approaches and then surpasses the maximal rate of the thioredoxin/thioredoxin reductase system (V), these concentration gradients become shallower, and then vanish. At low vsup the peroxiredoxin concentration determines the H2O2 concentrations and gradient length scale, but as vsup approaches V, the thioredoxin reductase activity gains influence. A differential mobility of peroxiredoxin disulfide dimers vs. reduced decamers enhances the redox polarity of the cytosol: as vsup approaches V, reduced decamers are preferentially retained far from H2O2 sources, attenuating the local H2O2 buildup. Substantial total protein concentration gradients of both peroxiredoxins emerge under these conditions, and the concentration of reduced peroxiredoxin 1 far from the H2O2 sources even increases with vsup. Altogether, the properties of 2-Cys peroxiredoxins and thioredoxin are such that localized H2O2 supply induces a redox and functional polarization between source-proximal regions (redox microdomains) that facilitate peroxiredoxin-mediated signaling and distal regions that maximize antioxidant protection.
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Affiliation(s)
- Matthew Griffith
- CNC - Centre for Neuroscience Cell Biology, University of Coimbra, UC-Biotech, Parque Tecnológico de Cantanhede, Núcleo 4, Lote 8, 3060-197, Cantanhede, Portugal; Department of Mathematical Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Adérito Araújo
- CMUC, Department of Mathematics, University of Coimbra, Largo D. Dinis, 3004-143, Coimbra, Portugal.
| | - Rui Travasso
- CFisUC, Department of Physics, University of Coimbra, Coimbra, Rua Larga, 3004-516, Coimbra, Portugal.
| | - Armindo Salvador
- CNC - Centre for Neuroscience Cell Biology, University of Coimbra, UC-Biotech, Parque Tecnológico de Cantanhede, Núcleo 4, Lote 8, 3060-197, Cantanhede, Portugal; Coimbra Chemistry Center - Institute of Molecular Sciences (CQC-IMS), University of Coimbra, Rua Larga, 3004-535, Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão, Rua Dom Francisco de Lemos, 3030-789, Coimbra, Portugal.
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Khaliq A, Nazir R, Khan M, Rahim A, Asad M, Shah M, Khan M, Ullah R, Ali EA, Khan A, Nishan U. Co-Doped CeO 2/Activated C Nanocomposite Functionalized with Ionic Liquid for Colorimetric Biosensing of H 2O 2 via Peroxidase Mimicking. Molecules 2023; 28:molecules28083325. [PMID: 37110559 PMCID: PMC10145388 DOI: 10.3390/molecules28083325] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Hydrogen peroxide acts as a byproduct of oxidative metabolism, and oxidative stress caused by its excess amount, causes different types of cancer. Thus, fast and cost-friendly analytical methods need to be developed for H2O2. Ionic liquid (IL)-coated cobalt (Co)-doped cerium oxide (CeO2)/activated carbon (C) nanocomposite has been used to assess the peroxidase-like activity for the colorimetric detection of H2O2. Both activated C and IL have a synergistic effect on the electrical conductivity of the nanocomposites to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB). The Co-doped CeO2/activated C nanocomposite has been synthesized by the co-precipitation method and characterized by UV-Vis spectrophotometry, FTIR, SEM, EDX, Raman spectroscopy, and XRD. The prepared nanocomposite was functionalized with IL to avoid agglomeration. H2O2 concentration, incubation time, pH, TMB concentration, and quantity of the capped nanocomposite were tuned. The proposed sensing probe gave a limit of detection of 1.3 × 10-8 M, a limit of quantification of 1.4 × 10-8 M, and an R2 of 0.999. The sensor gave a colorimetric response within 2 min at pH 6 at room temperature. The co-existing species did not show any interference during the sensing probe. The proposed sensor showed high sensitivity and selectivity and was used to detect H2O2 in cancer patients' urine samples.
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Affiliation(s)
- Abdul Khaliq
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Ruqia Nazir
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Muslim Khan
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Abdur Rahim
- Department of Chemistry, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
| | - Muhammad Asad
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Mohibullah Shah
- Department of Biochemistry, Bahauddin Zakariya University, Multan 66000, Pakistan
| | - Mansoor Khan
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
| | - Riaz Ullah
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Essam A Ali
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ajmir Khan
- School of Packaging, 448 Wilson Road, Michigan State University, East Lansing, MI 48824, USA
| | - Umar Nishan
- Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Pakistan
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Shabana N, Arjun AM, Rajendran K, Pathan S, Rasheed PA. Ru-W modified graphitic carbon nitride by a monomer complexation synthesis approach from a tailored polyoxometalate: towards electrochemical detection of hydrogen peroxide released by cells. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:587-595. [PMID: 36633183 DOI: 10.1039/d2ay01763f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Detection of hydrogen peroxide (H2O2) from cell cultures is important for monitoring different diseases. Here, g-C3N4 (gCN) was incorporated into well-defined clusters of RuW (RuW-gCN) through monomer complexation of Ru-substituted phosphotungstate and melamine for electrochemical detection of H2O2. RuW-gCN exhibited enhanced electrochemical sensing properties in comparison to its constituents due to the synergic effects between RuW and gCN. The characterization of RuW-gCN revealed successful complexation to form the composite in addition to the presence of a layered structure of gCN. The electrochemical sensor made of RuW-gCN was able to detect H2O2 with a detection limit of 46 nM in the linear ranges from 100 nM to 50 μM and from 50 μM to 1 mM. The developed sensor was employed for the selective detection of H2O2 in the presence of analytes like ascorbic acid (AA), dopamine, and glucose in addition to being stable even after a week of storage at room temperature. It has also been verified for real sample application by detecting H2O2 produced by cancer cells as a result of an AA trigger.
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Affiliation(s)
- Neermunda Shabana
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala, India-678 557.
| | - Ajith Mohan Arjun
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala, India-678 557
| | - K Rajendran
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala, India-678 557.
| | - Soyeb Pathan
- Centre of Research for Development (CR4D), Parul Institute of Applied Sciences, Parul University, Vadodara, Gujarat, India-391760
- Department of Chemistry, Parul Institute of Applied Sciences, Parul University, Vadodara, Gujarat, India-391760
| | - P Abdul Rasheed
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala, India-678 557.
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Palakkad, Kerala, India-678 557
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Schunk HC, Austin MJ, Taha BZ, McClellan MS, Suggs LJ, Rosales AM. Oxidative Degradation of Sequence-Defined Peptoid Oligomers. MOLECULAR SYSTEMS DESIGN & ENGINEERING 2023; 8:92-104. [PMID: 37123435 PMCID: PMC10147340 DOI: 10.1039/d2me00179a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Due to their N-substitution, peptoids are generally regarded as resistant to biological degradation, such as enzymatic and hydrolytic mechanisms. This stability is an especially attractive feature for therapeutic development and is a selling point of many previous biological studies. However, another key mode of degradation remains to be fully explored, namely oxidative degradation mediated by reactive oxygen and nitrogen species (ROS/RNS). ROS and RNS are biologically relevant in numerous contexts where biomaterials may be present, thus, improving understanding of peptoid oxidative susceptibility is crucial to exploit their full potential in the biomaterials field, where an oxidatively-labile but enzymatically stable molecule can offer attractive properties. Toward this end, we demonstrate a fundamental characterization of sequence-defined peptoid chains in the presence of chemically generated ROS, as compared to ROS-susceptible peptides such as proline and lysine oligomers. Lysine oligomers showed the fastest degradation rates to ROS and the enzyme trypsin. Peptoids degraded in metal catalyzed oxidation conditions at rates on par with poly(prolines), while maintaining resistance to enzymatic degradation. Furthermore, lysine-containing peptide-peptoid hybrid molecules showed tunability in both ROS-mediated and enzyme-mediated degradation, with rates intermediate to lysine and peptoid oligomers. When lysine-mimetic side-chains were incorporated into a peptoid backbone, the rate of degradation matched that of the lysine peptide oligomers, but remained resistant to enzymatic degradation. These results expand understanding of peptoid degradation to oxidative and enzymatic mechanisms, and demonstrate the potential for peptoid incorporation into materials where selectivity towards oxidative degradation is necessary, or directed enzymatic susceptibility is desired.
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Affiliation(s)
- Hattie C. Schunk
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Mariah J. Austin
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Bradley Z. Taha
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Matthew S. McClellan
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Laura J. Suggs
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, United States
| | - Adrianne M. Rosales
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States
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Fernández L, Alvarez-Paguay J, González G, Uribe R, Bolaños-Mendez D, Piñeiros JL, Celi L, Espinoza-Montero PJ. Electrochemical Sensor for Hydrogen Peroxide Based on Prussian Blue Electrochemically Deposited at the TiO2-ZrO2–Doped Carbon Nanotube Glassy Carbon-Modified Electrode. Front Chem 2022; 10:884050. [PMID: 35864867 PMCID: PMC9294385 DOI: 10.3389/fchem.2022.884050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
In this investigation, a hydrogen peroxide (H2O2) electrochemical sensor was evaluated. Prussian blue (PB) was electrodeposited at a glassy carbon (GC) electrode modified with titanium dioxide– and zirconia-doped functionalized carbon nanotubes (TiO2.ZrO2-fCNTs), obtaining the PB/TiO2.ZrO2-fCNTs/GC-modified electrode. The morphology and structure of the nanostructured material TiO2.ZrO2-fCNTs was characterized by transmission electron microscopy, the specific surface area was determined via Brunauer–Emmett–Teller, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The electrochemical properties were studied by cyclic voltammetry and chronoamperometry. Titania-zirconia nanoparticles (5.0 ± 2.0 nm) with an amorphous structure were directly synthesized on the fCNT walls, aged during periods of 20 days, obtaining a well-dispersed distribution with a high surface area. The results indicated that the TiO2.ZrO2-fCNT–nanostructured material exhibits good electrochemical properties and could be tunable by enhancing the modification conditions and method of synthesis. Covering of the nanotubes with TiO2-ZrO2 nanoparticles is one of the main factors that affected immobilization and sensitivity of the electrochemical biosensor. The electrode modified with TiO2-ZrO2 nanoparticles with the 20-day aging time was superior regarding its reversibility, electric communication, and high sensitivity and improves the immobilization of the PB at the electrode. The fabricated sensor was used in the detection of H2O2 in whey milk samples, presenting a linear relationship from 100 to 1,000 μmol L−1 between H2O2 concentration and the peak current, with a quantification limit (LQ) of 59.78 μmol L−1 and a detection limit (LD) of 17.93 μmol L−1.
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Affiliation(s)
- Lenys Fernández
- Escuela De Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito, Ecuador
- *Correspondence: Lenys Fernández, ; Patricio J. Espinoza-Montero,
| | | | - Gema González
- Yachay Tech University, School of Physical Sciences and Nanotechnology, Urcuqui, Ecuador
- Instituto Venezolano De Investigaciones Científicas, Centro De Ingeniería Materiales y Nanotecnología, Caracas, Venezuela
| | - Rafael Uribe
- Departamento De Ingeniería Química, Escuela Politécnica Nacional, Quito, Ecuador
| | - Diego Bolaños-Mendez
- Escuela De Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito, Ecuador
| | - José Luis Piñeiros
- Escuela De Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito, Ecuador
| | - Luis Celi
- Departamento De Física, Escuela Politécnica Nacional, Quito, Ecuador
| | - Patricio J. Espinoza-Montero
- Escuela De Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito, Ecuador
- *Correspondence: Lenys Fernández, ; Patricio J. Espinoza-Montero,
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Mihailova I, Gerbreders V, Krasovska M, Sledevskis E, Mizers V, Bulanovs A, Ogurcovs A. A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:424-436. [PMID: 35601536 PMCID: PMC9086496 DOI: 10.3762/bjnano.13.35] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/26/2022] [Indexed: 06/02/2023]
Abstract
This article describes the synthesis of nanostructured copper oxide on copper wires and its application for the detection of hydrogen peroxide. Copper oxide petal nanostructures were obtained by a one-step hydrothermal oxidation method. The resulting coating is uniform and dense and shows good adhesion to the wire surface. Structure, surface, and composition of the obtained samples were studied using field-emission scanning electron microscopy along with energy-dispersive spectroscopy and X-ray diffractometry. The resulting nanostructured samples were used for electrochemical determination of the H2O2 content in a 0.1 M NaOH buffer solution using cyclic voltammetry, differential pulse voltammetry, and i-t measurements. A good linear relationship between the peak current and the concentration of H2O2 in the range from 10 to 1800 μM was obtained. The sensitivity of the obtained CuO electrode is 439.19 μA·mM-1. The calculated limit of detection is 1.34 μM, assuming a signal-to-noise ratio of 3. The investigation of the system for sensitivity to interference showed that the most common interfering substances, that is, ascorbic acid, uric acid, dopamine, NaCl, glucose, and acetaminophen, do not affect the electrochemical response. The real milk sample test showed a high recovery rate (more than 95%). According to the obtained results, this sensor is suitable for practical use for the qualitative detection of H2O2 in real samples, as well as for the quantitative determination of its concentration.
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Affiliation(s)
- Irena Mihailova
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Vjaceslavs Gerbreders
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Marina Krasovska
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Eriks Sledevskis
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Valdis Mizers
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Andrejs Bulanovs
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
| | - Andrejs Ogurcovs
- G. Liberts' Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology, Daugavpils University, Parades Street 1, Daugavpils, LV-5401, Latvia
- Institute of Solid State Physics, University of Latvia, Kengaraga street 8, Riga, LV-1063, Latvia
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8
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Mooli RGR, Mukhi D, Ramakrishnan SK. Oxidative Stress and Redox Signaling in the Pathophysiology of Liver Diseases. Compr Physiol 2022; 12:3167-3192. [PMID: 35578969 PMCID: PMC10074426 DOI: 10.1002/cphy.c200021] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The increased production of derivatives of molecular oxygen and nitrogen in the form of reactive oxygen species (ROS) and reactive nitrogen species (RNS) lead to molecular damage called oxidative stress. Under normal physiological conditions, the ROS generation is tightly regulated in different cells and cellular compartments. Any disturbance in the balance between the cellular generation of ROS and antioxidant balance leads to oxidative stress. In this article, we discuss the sources of ROS (endogenous and exogenous) and antioxidant mechanisms. We also focus on the pathophysiological significance of oxidative stress in various cell types of the liver. Oxidative stress is implicated in the development and progression of various liver diseases. We narrate the master regulators of ROS-mediated signaling and their contribution to liver diseases. Nonalcoholic fatty liver diseases (NAFLD) are influenced by a "multiple parallel-hit model" in which oxidative stress plays a central role. We highlight the recent findings on the role of oxidative stress in the spectrum of NAFLD, including fibrosis and liver cancer. Finally, we provide a brief overview of oxidative stress biomarkers and their therapeutic applications in various liver-related disorders. Overall, the article sheds light on the significance of oxidative stress in the pathophysiology of the liver. © 2022 American Physiological Society. Compr Physiol 12:3167-3192, 2022.
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Affiliation(s)
- Raja Gopal Reddy Mooli
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Dhanunjay Mukhi
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sadeesh K Ramakrishnan
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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9
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Dervisevic E, Voelcker NH, Risbridger G, Tuck KL, Cadarso VJ. Colorimetric Detection of Extracellular Hydrogen Peroxide Using an Integrated Microfluidic Device. Anal Chem 2022; 94:1726-1732. [PMID: 35014786 DOI: 10.1021/acs.analchem.1c04312] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
It is well known that hydrogen peroxide (H2O2) is a signaling molecule essential for vital physiological reactions in mammalian cells, such as cell survival, intercellular communication, and cancer metabolism. However, to fully understand the function of H2O2, it is critical to monitor its intracellular and/or extracellular concentrations. Current techniques implemented to address this need require large sample volumes, expensive instrumentation, and long sample preparation and analysis times, inapplicable to inline or online monitoring. In this paper, a new integrated microfluidic device capable of overcoming these limitations is demonstrated for the colorimetric detection of extracellular hydrogen peroxide H2O2. The device contains an optical waveguide to determine absorbance changes and micromixers to enable complete mixing of reagents using a passive approach. This novel H2O2-sensing device has allowed the detection of H2O2 in the range of 0.5-60 μM with a detection limit of 167 ± 5.8 nM and a sensitivity of 13.5 ± 0.1 AU/mM. Proof of concept of the device was demonstrated by quantifying H2O2 release from benign prostatic epithelial (BPH-1) cells upon stimulation with phorbol 12-myristate 13-acetate (PMA). Results show that this integrated device can be potentially utilized to continuously monitor cell-released metabolites autonomously without constant human supervision during the process. Furthermore, this can be achieved without interfering with the cell culture conditions, as only a very small volume of conditioned media (less than 0.4 μL), and not the cells, is required.
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Affiliation(s)
- Esma Dervisevic
- Department of Mechanical and Aerospace Engineering, Monash University, Room 227, New Horizons Building, 20 Research Way, Clayton, Melbourne, Victoria 3800, Australia
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences (MIPS), Monash University, 381 Royal Parade, Parkville, Melbourne, Victoria 3052, Australia.,The Melbourne Centre for Nanofabrication, Victorian Node - Australian National Fabrication Facility, Clayton, Melbourne, Victoria 3800, Australia.,Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, Melbourne, Victoria 3168, Australia
| | - Gail Risbridger
- Prostate Cancer Translational Research Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia.,Cancer Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, Melbourne, Victoria 3800, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia
| | - Kellie L Tuck
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Victor J Cadarso
- Department of Mechanical and Aerospace Engineering, Monash University, Room 227, New Horizons Building, 20 Research Way, Clayton, Melbourne, Victoria 3800, Australia.,The Melbourne Centre for Nanofabrication, Victorian Node - Australian National Fabrication Facility, Clayton, Melbourne, Victoria 3800, Australia.,Centre to Impact Antimicrobial Resistance─Sustainable Solutions, Monash University, Clayton, Melbourne, Victoria 3800 Australia
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10
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Chakraborty A, Ravi SP, Shamiya Y, Cui C, Paul A. Harnessing the physicochemical properties of DNA as a multifunctional biomaterial for biomedical and other applications. Chem Soc Rev 2021; 50:7779-7819. [PMID: 34036968 DOI: 10.1039/d0cs01387k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The biological purpose of DNA is to store, replicate, and convey genetic information in cells. Progress in molecular genetics have led to its widespread applications in gene editing, gene therapy, and forensic science. However, in addition to its role as a genetic material, DNA has also emerged as a nongenetic, generic material for diverse biomedical applications. DNA is essentially a natural biopolymer that can be precisely programed by simple chemical modifications to construct materials with desired mechanical, biological, and structural properties. This review critically deciphers the chemical tools and strategies that are currently being employed to harness the nongenetic functions of DNA. Here, the primary product of interest has been crosslinked, hydrated polymers, or hydrogels. State-of-the-art applications of macroscopic, DNA-based hydrogels in the fields of environment, electrochemistry, biologics delivery, and regenerative therapy have been extensively reviewed. Additionally, the review encompasses the status of DNA as a clinically and commercially viable material and provides insight into future possibilities.
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Affiliation(s)
- Aishik Chakraborty
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Shruthi Polla Ravi
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Yasmeen Shamiya
- Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Caroline Cui
- Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Arghya Paul
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada. and School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada and Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
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Zamhuri A, Lim GP, Ma NL, Tee KS, Soon CF. MXene in the lens of biomedical engineering: synthesis, applications and future outlook. Biomed Eng Online 2021; 20:33. [PMID: 33794899 PMCID: PMC8017618 DOI: 10.1186/s12938-021-00873-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/22/2021] [Indexed: 02/12/2023] Open
Abstract
MXene is a recently emerged multifaceted two-dimensional (2D) material that is made up of surface-modified carbide, providing its flexibility and variable composition. They consist of layers of early transition metals (M), interleaved with n layers of carbon or nitrogen (denoted as X) and terminated with surface functional groups (denoted as Tx/Tz) with a general formula of Mn+1XnTx, where n = 1-3. In general, MXenes possess an exclusive combination of properties, which include, high electrical conductivity, good mechanical stability, and excellent optical properties. MXenes also exhibit good biological properties, with high surface area for drug loading/delivery, good hydrophilicity for biocompatibility, and other electronic-related properties for computed tomography (CT) scans and magnetic resonance imaging (MRI). Due to the attractive physicochemical and biocompatibility properties, the novel 2D materials have enticed an uprising research interest for application in biomedicine and biotechnology. Although some potential applications of MXenes in biomedicine have been explored recently, the types of MXene applied in the perspective of biomedical engineering and biomedicine are limited to a few, titanium carbide and tantalum carbide families of MXenes. This review paper aims to provide an overview of the structural organization of MXenes, different top-down and bottom-up approaches for synthesis of MXenes, whether they are fluorine-based or fluorine-free etching methods to produce biocompatible MXenes. MXenes can be further modified to enhance the biodegradability and reduce the cytotoxicity of the material for biosensing, cancer theranostics, drug delivery and bio-imaging applications. The antimicrobial activity of MXene and the mechanism of MXenes in damaging the cell membrane were also discussed. Some challenges for in vivo applications, pitfalls, and future outlooks for the deployment of MXene in biomedical devices were demystified. Overall, this review puts into perspective the current advancements and prospects of MXenes in realizing this 2D nanomaterial as a versatile biological tool.
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Affiliation(s)
- Adibah Zamhuri
- Biosensor and Bioengineering Lab, Microelectronics and Nanotechnology-Shamsuddin Research Centre, Institute for Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia
| | - Gim Pao Lim
- Biosensor and Bioengineering Lab, Microelectronics and Nanotechnology-Shamsuddin Research Centre, Institute for Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia
| | - Nyuk Ling Ma
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Kian Sek Tee
- Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia
| | - Chin Fhong Soon
- Biosensor and Bioengineering Lab, Microelectronics and Nanotechnology-Shamsuddin Research Centre, Institute for Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia.
- Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Batu Pahat, Johor, Malaysia.
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12
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Heat shock increases levels of reactive oxygen species, autophagy and apoptosis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118924. [PMID: 33301820 DOI: 10.1016/j.bbamcr.2020.118924] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/24/2020] [Accepted: 12/02/2020] [Indexed: 12/18/2022]
Abstract
Hyperthermia is a promising anticancer treatment used in combination with radiotherapy and chemotherapy. Temperatures above 41.5 °C are cytotoxic and hyperthermia treatments can target a localized area of the body that has been invaded by a tumor. However, non-lethal temperatures (39-41 °C) can increase cellular defenses, such as heat shock proteins. This adaptive survival response, thermotolerance, can protect cells against subsequent cytotoxic stress such as anticancer treatments and heat shock (>41.5 °C). Autophagy is another survival process that is activated by stress. This study aims to determine whether autophagy can be activated by heat shock at 42 °C, and if this response is mediated by reactive oxygen species (ROS). Autophagy was increased during shorter heating times (<60 min) at 42 °C in cells. Levels of acidic vesicular organelles (AVO) and autophagy proteins Beclin-1, LC3-II/LC-3I, Atg7 and Atg12-Atg5 were increased. Heat shock at 42 °C increased levels of ROS. Increased levels of LC3 and AVOs at 42 °C were inhibited by antioxidants. Therefore, increased autophagy during heat shock at 42 °C (<60 min) was mediated by ROS. Conversely, heat shock at 42 °C for longer times (1-3 h) caused apoptosis and activation of caspases in the mitochondrial, death receptor and endoplasmic reticulum (ER) pathways. Thermotolerant cells, which were developed at 40 °C, were resistant to activation of apoptosis at 42 °C. Autophagy inhibitors 3-methyladenine and bafilomycin sensitized cells to activation of apoptosis by heat shock (42 °C). Improved understanding of autophagy in cellular responses to heat shock could be useful for optimizing the efficacy of hyperthermia in the clinic.
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Maksym DS, Zaborovsky AB, Kubaj YY, Bloniarz P, Pacześniak T, Muzart J, Pokutsa AP. Versatile and Affordable Approach for Tracking the Oxidative Stress Caused by the Free Radicals: the Chemical Perception. ChemistrySelect 2020. [DOI: 10.1002/slct.202003305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dariya S. Maksym
- Department of Physical Chemistry of Fossils Fuels Institute of Physical Organic Chemistry and Chemistry of Coal NAS of Ukraine Naukova Str., 3A Lviv 79060 Ukraine
| | - Andriy B. Zaborovsky
- Department of Physical Chemistry of Fossils Fuels Institute of Physical Organic Chemistry and Chemistry of Coal NAS of Ukraine Naukova Str., 3A Lviv 79060 Ukraine
| | | | - Pawel Bloniarz
- Department of Chemistry Rzeszow University of Technology P.O. Box 85 35-959 Rzeszow Poland
| | - Tomasz Pacześniak
- Department of Chemistry Rzeszow University of Technology P.O. Box 85 35-959 Rzeszow Poland
| | - Jacques Muzart
- Institut de Chimie Moléculaire de Reims UMR 6229 UFR des Sciences Exactes et Naturelles CNRS – Université de Reims Champagne-Ardenne BP 1039 51687 Reims Cedex 2 France
| | - Alexander P. Pokutsa
- Department of Physical Chemistry of Fossils Fuels Institute of Physical Organic Chemistry and Chemistry of Coal NAS of Ukraine Naukova Str., 3A Lviv 79060 Ukraine
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Zribi R, Neri G. Mo-Based Layered Nanostructures for the Electrochemical Sensing of Biomolecules. SENSORS (BASEL, SWITZERLAND) 2020; 20:E5404. [PMID: 32967188 PMCID: PMC7571038 DOI: 10.3390/s20185404] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 12/19/2022]
Abstract
Mo-based layered nanostructures are two-dimensional (2D) nanomaterials with outstanding characteristics and very promising electrochemical properties. These materials comprise nanosheets of molybdenum (Mo) oxides (MoO2 and MoO3), dichalcogenides (MoS2, MoSe2, MoTe2), and carbides (MoC2), which find application in electrochemical devices for energy storage and generation. In this feature paper, we present the most relevant characteristics of such Mo-based layered compounds and their use as electrode materials in electrochemical sensors. In particular, the aspects related to synthesis methods, structural and electronic characteristics, and the relevant electrochemical properties, together with applications in the specific field of electrochemical biomolecule sensing, are reviewed. The main features, along with the current status, trends, and potentialities for biomedical sensing applications, are described, highlighting the peculiar properties of Mo-based 2D-nanomaterials in this field.
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Affiliation(s)
| | - Giovanni Neri
- Department of Engineering, University of Messina, C.da Di Dio, I-98166 Messina, Italy;
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Hernandez DS, Schunk HC, Shankar KM, Rosales AM, Suggs LJ. Poly-d-lysine coated nanoparticles to identify pro-inflammatory macrophages. NANOSCALE ADVANCES 2020; 2:3849-3857. [PMID: 36132778 PMCID: PMC9416964 DOI: 10.1039/d0na00373e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/12/2020] [Indexed: 05/16/2023]
Abstract
Identifying pro-inflammatory macrophages (M1) is of immense importance to diagnose, monitor, and treat various pathologies. In addition, adoptive cell therapies, where harvested cells are isolated, modified to express an M1-like phenotype, then re-implanted to the patient, are also becoming more prevalent to treat diseases such as cancer. In a step toward identifying, labeling, and monitoring macrophage phenotype for adoptive cell therapies, we developed a reactive oxygen species (ROS)-sensitive, gold nanoparticle (AuNP) that fluorescently labels M1 macrophages. AuNPs are electrostatically coated with a proteolysis resistant, fluorescein isothiocyanate-conjugated, poly-d-lysine (PDL-FITC) that is susceptible to backbone cleavage by ROS. When PDL-FITC is bound to AuNPs, fluorescence is quenched via a combination of nanoparticle surface (NSET) and Forster resonance (FRET) energy transfer mechanisms. Upon ROS-induced cleavage of PDL-FITC, up to a 7-fold change in fluorescence is demonstrated. PDL-FITC AuNPs were loaded into RAW 264.7 macrophages (RAWs) and primary bone marrow- derived macrophages (BMDMs) prior to in vitro polarization. For both cell types, detectable differences in intracellular fluorescence were observed between M1 polarized and non-stimulated (M0) control groups after 24 h using both confocal imaging and flow cytometry. PDL-FITC AuNPs can potentially be useful in identifying M1 macrophages within diverse cell populations and provide longitudinal macrophage response data to external cues.
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Affiliation(s)
- Derek S Hernandez
- Department of Biomedical Engineering, University of Texas at Austin Austin TX 78712 USA
| | - Hattie C Schunk
- Department of Biomedical Engineering, University of Texas at Austin Austin TX 78712 USA
- McKetta Department of Chemical Engineering, University of Texas at Austin Austin TX 78712 USA
| | - Karan M Shankar
- Department of Biomedical Engineering, University of Texas at Austin Austin TX 78712 USA
| | - Adrianne M Rosales
- McKetta Department of Chemical Engineering, University of Texas at Austin Austin TX 78712 USA
| | - Laura J Suggs
- Department of Biomedical Engineering, University of Texas at Austin Austin TX 78712 USA
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The Versatility of Antioxidant Assays in Food Science and Safety-Chemistry, Applications, Strengths, and Limitations. Antioxidants (Basel) 2020; 9:antiox9080709. [PMID: 32764410 PMCID: PMC7464350 DOI: 10.3390/antiox9080709] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 01/09/2023] Open
Abstract
Currently, there is a growing interest in screening and quantifying antioxidants from biological samples in the quest for natural and effective antioxidants to combat free radical-related pathological complications. Antioxidant assays play a crucial role in high-throughput and cost-effective assessment of antioxidant capacities of natural products such as medicinal plants and food samples. However, several investigators have expressed concerns about the reliability of existing in vitro assays. Such concerns arise mainly from the poor correlation between in vitro and in vivo results. In addition, in vitro assays have the problem of reproducibility. To date, antioxidant capacities are measured using a panel of assays whereby each assay has its own advantages and limitations. This unparalleled review hotly disputes on in vitro antioxidant assays and elaborates on the chemistry behind each assay with the aim to point out respective principles/concepts. The following critical questions are also addressed: (1) What make antioxidant assays coloured? (2) What is the reason for working at a particular wavelength? (3) What are the advantages and limitations of each assay? and (4) Why is a particular colour observed in antioxidant–oxidant chemical reactions? Furthermore, this review details the chemical mechanism of reactions that occur in each assay together with a colour ribbon to illustrate changes in colour. The review ends with a critical conclusion on existing assays and suggests constructive improvements on how to develop an adequate and universal antioxidant assay.
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Jiménez-Pérez R, Almagro L, González-Sánchez MI, Pedreño MÁ, Valero E. Non-enzymatic screen-printed sensor based on PtNPs@polyazure A for the real-time tracking of the H2O2 secreted from living plant cells. Bioelectrochemistry 2020; 134:107526. [DOI: 10.1016/j.bioelechem.2020.107526] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022]
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18
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Ghéczy N, Sasaki K, Yoshimoto M, Pour-Esmaeil S, Kröger M, Stano P, Walde P. A two-enzyme cascade reaction consisting of two reaction pathways. Studies in bulk solution for understanding the performance of a flow-through device with immobilised enzymes. RSC Adv 2020; 10:18655-18676. [PMID: 35518281 PMCID: PMC9053938 DOI: 10.1039/d0ra01204a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/29/2020] [Indexed: 12/17/2022] Open
Abstract
Enzyme-catalysed cascade reactions in flow-through systems with immobilised enzymes currently are of great interest for exploring their potential for biosynthetic and bioanalytical applications. Basic studies in this field often aim at understanding the stability of the immobilised enzymes and their catalytic performance, for example, in terms of yield of a desired reaction product, analyte detection limit, enzyme stability or reaction reproducibility. In the work presented, a cascade reaction involving the two enzymes bovine carbonic anhydrase (BCA) and horseradish peroxidase (HRP) – with hydrogen peroxide (H2O2) as HRP “activator” – was first investigated in great detail in bulk solution at pH = 7.2. The reaction studied is the hydrolysis and oxidation of 2′,7′-dichlorodihydrofluorescein diacetate (DCFH2-DA) to 2′,7′-dichlorofluorescein (DCF), which was found to proceed along two reaction pathways. This two-enzyme cascade reaction was then applied for analysing the performance of BCA and HRP immobilised in glass fiber filters which were placed inside a filter holder device through which a DCFH2-DA/H2O2 substrate solution was pumped. Comparison was made between (i) co-immobilised and (ii) sequentially immobilised enzymes (BCA first, HRP second). Significant differences for the two arrangements in terms of measured product yield (DCF) could be explained based on quantitative UV/vis absorption measurements carried out in bulk solution. We found that the lower DCF yield observed for sequentially immobilised enzymes originates from a change in one of the two possible reaction pathways due to enzyme separation, which was not the case for enzymes that were co-immobilised (or simultaneously present in the bulk solution experiments). The higher DCF yield observed for co-immobilised enzymes did not originate from a molecular proximity effect (no increased oxidation compared to sequential immobilisation). A cascade reaction catalysed by bovine carbonic anhydrase (BCA) and horseradish peroxidase (HRP) proceeds over two possible pathways, which explains differences in product formation for differently immobilised enzymes in flow-through reactions.![]()
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Affiliation(s)
- Nicolas Ghéczy
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland
| | - Kai Sasaki
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland
| | - Makoto Yoshimoto
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland .,Department of Applied Chemistry, Yamaguchi University Tokiwadai 2-16-1 Ube 755-8611 Japan
| | - Sajad Pour-Esmaeil
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland
| | - Martin Kröger
- Polymer Physics, Department of Materials, ETH Zürich Leopold-Ruzicka-Weg 4 CH-8093 Zürich Switzerland
| | - Pasquale Stano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento Ecotekne 73100 Lecce Italy
| | - Peter Walde
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich Vladimir-Prelog-Weg 5 CH-8093 Zürich Switzerland
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Schunk HC, Hernandez DS, Austin MJ, Dhada KS, Rosales AM, Suggs LJ. Assessing the range of enzymatic and oxidative tunability for biosensor design. J Mater Chem B 2020; 8:3460-3487. [PMID: 32159202 PMCID: PMC7219111 DOI: 10.1039/c9tb02666e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Development of multi-functional materials and biosensors that can achieve an in situ response designed by the user is a current need in the biomaterials field, especially in complex biological environments, such as inflammation, where multiple enzymatic and oxidative signals are present. In the past decade, there has been extensive research and development of materials chemistries for detecting and monitoring enzymatic activity, as well as for releasing therapeutic and diagnostic agents in regions undergoing oxidative stress. However, there has been limited development of materials in the context of enzymatic and oxidative triggers together, despite their closely tied and overlapping mechanisms. With research focusing on enzymatically and oxidatively triggered materials separately, these systems may be inadequate in monitoring the complexity of inflammatory environments, thus limiting in vivo translatability and diagnostic accuracy. The intention of this review is to highlight a variety of enzymatically and oxidatively triggered materials chemistries to draw attention to the range of synthetic tunability available for the construction of novel biosensors with a spectrum of programmed responses. We focus our discussion on several types of macromolecular sensors, generally classified by the causative material response driving ultimate signal detection. This includes sensing based on degradative processes, conformational changes, supramolecular assembly/disassembly, and nanomaterial interactions, among others. We see each of these classes providing valuable tools toward coalescing current gaps in the biosensing field regarding specificity, selectivity, sensitivity, and flexibility in application. Additionally, by considering the materials chemistry of enzymatically and oxidatively triggered biomaterials in tandem, we hope to encourage synthesis of new biosensors that capitalize on their synergistic roles and overlapping mechanisms in inflammatory environments for applications in disease diagnosis and monitoring.
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Affiliation(s)
- Hattie C Schunk
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX 78712, USA.
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Wang H, Schoebel S, Schmitz F, Dong H, Hedfalk K. Quantitative analysis of H 2O 2 transport through purified membrane proteins. MethodsX 2020; 7:100816. [PMID: 32195136 PMCID: PMC7078375 DOI: 10.1016/j.mex.2020.100816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 02/01/2020] [Indexed: 01/22/2023] Open
Abstract
Hydrogen peroxide (H2O2) is an important signal molecule produced in animal and plant cells. The balance of H2O2 between the intra- and extracellular space is regulated by integral membrane proteins, which thereby modulate signaling. Several methods have been established to analyze aquaporin mediated transport of H2O2 in whole cells with the intrinsic limitation that the amount of protein responsible for a certain activity cannot be standardized. As a consequence, the quantification of the transport and specific activity is difficult to extract making it problematic to compare isoforms and mutated variants of one specific target. Moreover, in cell-based assays, the expression of the target protein may alter the physiological processes of the host cell providing a complication and the risk of misleading results. To improve the measurements of protein based H2O2 transport, we have developed an assay allowing quantitative measurements.Using purified aquaporin reconstituted in proteoliposomes, transport of H2O2 can be accurately measured. Inside the liposomes, H2O2 catalyzes the reaction between Amplex Red and horseradish peroxidase (HRP) giving rise to the fluorescent product resorufin. Analysing pure protein provides direct biochemical evidence of a specific transport excluding putative cellular background.
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Affiliation(s)
- Hao Wang
- Department of Plant Pathology, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.,Department and Chemistry and Molecular Biology, Gothenburg University, Box 462, 405 30 Göteborg, Sweden
| | - Stefan Schoebel
- Department and Chemistry and Molecular Biology, Gothenburg University, Box 462, 405 30 Göteborg, Sweden
| | - Florian Schmitz
- Department and Chemistry and Molecular Biology, Gothenburg University, Box 462, 405 30 Göteborg, Sweden
| | - Hansong Dong
- Department of Plant Pathology, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China
| | - Kristina Hedfalk
- Department and Chemistry and Molecular Biology, Gothenburg University, Box 462, 405 30 Göteborg, Sweden
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Expression and functional analysis of the hydrogen peroxide biosensors HyPer and HyPer2 in C2C12 myoblasts/myotubes and single skeletal muscle fibres. Sci Rep 2020; 10:871. [PMID: 31965006 PMCID: PMC6972731 DOI: 10.1038/s41598-020-57821-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/06/2020] [Indexed: 01/11/2023] Open
Abstract
Hydrogen peroxide (H2O2) is generated in cells and plays an important role as a signalling molecule. It has been reported that H2O2 is involved in physiological and pathological processes in skeletal muscle. However, H2O2 detection in cells with traditional techniques produces frequent artefacts. Currently, the HyPer biosensor detects intracellular H2O2 specifically in real time using fluorescence microscopy. The aim of this study was to develop and optimize approaches used to express the HyPer biosensor in different models of skeletal muscle cells, such as the C2C12 myoblast/myotube cell line and mature skeletal muscle fibres isolated from C57BL/6J mice, and to measure intracellular H2O2 in real time in these cells. The results show that the expression of the HyPer biosensor in skeletal muscle cells is possible. In addition, we demonstrate that HyPer is functional and that this biosensor detects changes and fluctuations in intracellular H2O2 in a reversible manner. The HyPer2 biosensor, which is a more advanced version of HyPer, presents improved properties in terms of sensitivity in detecting lower concentrations of H2O2 in skeletal muscle fibres. In conclusion, the expression of the HyPer biosensor in the different experimental models combined with fluorescence microscopy techniques is a powerful methodology to monitor and register intracellular H2O2 specifically in skeletal muscle. The innovation of the methodological approaches presented in this study may present new avenues for studying the role of H2O2 in skeletal muscle pathophysiology. Furthermore, the methodology may potentially be adapted to yield other specific biosensors for different reactive oxygen and nitrogen species or metabolites involved in cellular functions.
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Gul U, Kanwal S, Tabassum S, Gilani MA, Rahim A. Microwave-assisted synthesis of carbon dots as reductant and stabilizer for silver nanoparticles with enhanced-peroxidase like activity for colorimetric determination of hydrogen peroxide and glucose. Mikrochim Acta 2020; 187:135. [DOI: 10.1007/s00604-019-4098-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/26/2019] [Indexed: 11/30/2022]
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Electrochemically Reduced Graphene Oxide – Noble Metal Nanoparticles Nanohybrids for Sensitive Enzyme-Free Detection of Hydrogen Peroxide. Electrocatalysis (N Y) 2020. [DOI: 10.1007/s12678-019-00580-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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24
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Guerrero LA, Fernández L, González G, Montero-Jiménez M, Uribe R, Díaz Barrios A, Espinoza-Montero PJ. Peroxide Electrochemical Sensor and Biosensor Based on Nanocomposite of TiO 2 Nanoparticle/Multi-Walled Carbon Nanotube Modified Glassy Carbon Electrode. NANOMATERIALS 2019; 10:nano10010064. [PMID: 31892125 PMCID: PMC7023077 DOI: 10.3390/nano10010064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/09/2019] [Accepted: 12/15/2019] [Indexed: 01/13/2023]
Abstract
A hydrogen peroxide (H2O2) sensor and biosensor based on modified multi-walled carbon nanotubes (CNTs) with titanium dioxide (TiO2) nanostructures was designed and evaluated. The construction of the sensor was performed using a glassy carbon (GC) modified electrode with a TiO2–CNT film and Prussian blue (PB) as an electrocalatyzer. The same sensor was also employed as the basis for H2O2 biosensor construction through further modification with horseradish peroxidase (HRP) immobilized at the TiO2–fCNT film. Functionalized CNTs (fCNTs) and modified TiO2–fCNTs were characterized by Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray DifFraction (XRD), confirming the presence of anatase over the fCNTs. Depending on the surface charge, a solvent which optimizes the CNT dispersion was selected: dimethyl formamide (DMF) for fCNTs and sodium dodecylsulfate (SDS) for TiO2–fCNTs. Calculated values for the electron transfer rate constant (ks) were 0.027 s−1 at the PB–fCNT/GC modified electrode and 4.7 × 10−4 s−1 at the PB–TiO2/fCNT/GC electrode, suggesting that, at the PB–TiO2/fCNT/GC modified electrode, the electronic transfer was improved. According to these results, the PB–fCNT/GC electrode exhibited better Detection Limit (LD) and Quantification Limit (LQ) than the PB–TiO2/fCNT/GC electrode for H2O2. However, the PB film was very unstable at the potentials used. Therefore, the PB–TiO2/fCNT/GC modified electrode was considered the best for H2O2 detection in terms of operability. Cyclic Voltammetry (CV) behaviors of the HRP–TiO2/fCNT/GC modified electrodes before and after the chronoamperometric test for H2O2, suggest the high stability of the enzymatic electrode. In comparison with other HRP/fCNT-based electrochemical biosensors previously described in the literature, the HRP–fCNTs/GC modified electrode did not show an electroanalytical response toward H2O2.
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Affiliation(s)
- L. Andrés Guerrero
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076, Apartado, Quito 17-01-2184, Ecuador; (L.A.G.)
- School of Physics and Nanotechnology, Yachay Tech University, Urcuqui 100650, Ecuador;
| | - Lenys Fernández
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076, Apartado, Quito 17-01-2184, Ecuador; (L.A.G.)
- Departamento de Química, Universidad Simón Bolívar, Caracas 89000, Venezuela
- Correspondence: (L.F.); (G.G.); (P.J.E.-M.); Tel.: +593-2299-1700 (ext. 1929) (P.J.E.-M.)
| | - Gema González
- School of Physics and Nanotechnology, Yachay Tech University, Urcuqui 100650, Ecuador;
- Instituto Venezolano de Investigaciones Científicas, Centro de Ingeniería Materiales y Nanotecnología, Caracas 1020-A, Venezuela
- Correspondence: (L.F.); (G.G.); (P.J.E.-M.); Tel.: +593-2299-1700 (ext. 1929) (P.J.E.-M.)
| | - Marjorie Montero-Jiménez
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076, Apartado, Quito 17-01-2184, Ecuador; (L.A.G.)
| | - Rafael Uribe
- Departamento de Ingeniería Química, Escuela Politécnica Nacional, Quito 17-01-2759, Ecuador;
| | - Antonio Díaz Barrios
- School of Physics and Nanotechnology, Yachay Tech University, Urcuqui 100650, Ecuador;
| | - Patricio J. Espinoza-Montero
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076, Apartado, Quito 17-01-2184, Ecuador; (L.A.G.)
- Correspondence: (L.F.); (G.G.); (P.J.E.-M.); Tel.: +593-2299-1700 (ext. 1929) (P.J.E.-M.)
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25
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Roma LP, Jonas JC. Nutrient Metabolism, Subcellular Redox State, and Oxidative Stress in Pancreatic Islets and β-Cells. J Mol Biol 2019; 432:1461-1493. [PMID: 31634466 DOI: 10.1016/j.jmb.2019.10.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/25/2019] [Accepted: 10/10/2019] [Indexed: 01/01/2023]
Abstract
Insulin-secreting pancreatic β-cells play a critical role in blood glucose homeostasis and the development of type 2 diabetes (T2D) in the context of insulin resistance. Based on data obtained at the whole cell level using poorly specific chemical probes, reactive oxygen species (ROS) such as superoxide and hydrogen peroxide have been proposed to contribute to the stimulation of insulin secretion by nutrients (positive role) and to the alterations of cell survival and secretory function in T2D (negative role). This raised the controversial hypothesis that any attempt to decrease β-cell oxidative stress and apoptosis in T2D would further impair insulin secretion. Over the last decade, the development of genetically-encoded redox probes that can be targeted to cellular compartments of interest and are specific of redox couples allowed the evaluation of short- and long-term effects of nutrients on β-cell redox changes at the subcellular level. The data indicated that the nutrient regulation of β-cell redox signaling and ROS toxicity is far more complex than previously thought and that the subcellular compartmentation of these processes cannot be neglected when evaluating the mechanisms of ROS production or the efficacy of antioxidant enzymes and antioxidant drugs under glucolipotoxic conditions and in T2D. In this review, we present what is currently known about the compartmentation of redox homeostatic systems and tools to investigate it. We then review data about the effects of nutrients on β-cell subcellular redox state under normal conditions and in the context of T2D and discuss challenges and opportunities in the field.
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Affiliation(s)
- Leticia P Roma
- Universität des Saarlandes, Biophysics Department, Center for Human and Molecular Biology, Kirbergerstrasse Building 48, 66421, Homburg/Saar, Germany
| | - Jean-Christophe Jonas
- Université Catholique de Louvain, Institute of Experimental and Clinical Research, Pole of Endocrinology, Diabetes and Nutrition, Avenue Hippocrate 55 (B1.55.06), B-1200 Brussels, Belgium.
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26
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Jin A, Li B, Li W, Xiao D. PHLPP2 downregulation protects cardiomyocytes against hypoxia-induced injury through reinforcing Nrf2/ARE antioxidant signaling. Chem Biol Interact 2019; 314:108848. [PMID: 31610156 DOI: 10.1016/j.cbi.2019.108848] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 09/19/2019] [Accepted: 10/09/2019] [Indexed: 11/18/2022]
Abstract
Cardiomyocyte injury induced by acute myocardial infarction contributes to myocardial dysfunction. Accumulating evidence has demonstrated that pleckstrin homology domain leucine-rich repeat protein phosphatase 2 (PHLPP2) is a cytoprotective protein that protects against various adverse injuries. However, whether PHLPP2 participates in regulating myocardial-infarction-induced cardiomyocyte injury remains unknown. In the present study, we aimed to investigate the biological role and molecular mechanism of PHLPP2 in regulating hypoxia-induced cardiomyocyte injury. Cardiomyocytes were cultured in an anaerobic chamber for 24 h to induce hypoxic injury in vitro. The expression of PHLPP2 was determined by real-time quantitative PCR and Western blot analysis. Cell viability was measured by MTT assay. Cell apoptosis was assessed by TUNEL and caspase-3 activity assays. Intracellular reactive oxygen species (ROS) levels were measured by DCFH-DA probe. PHLPP2 expression was highly upregulated in hypoxia-injured cardiomyocytes. Inhibition of PHLPP2 by small interfering RNA (siRNA)-mediated gene silencing significantly improved the viability of hypoxia-injured cardiomyocytes and attenuated hypoxia-induced apoptosis and ROS production. In contrast, PHLPP2 overexpression exacerbated hypoxia-induced apoptosis and ROS production in cardiomyocytes. Mechanism research revealed that PHLPP2 silencing increased the phosphorylation of glycogen synthase kinase (GSK)-3β and promoted the nuclear translocation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2). In addition, PHLPP2 inhibition promoted Nrf2/antioxidant response element (ARE) transcriptional activity. However, Nrf2 silencing markedly reversed PHLPP2-inhibition-mediated cardioprotection, while GSK-3β inhibition partially blocked the PHLPP2-overexpression-induced adverse effect. Taken together, these findings demonstrate that PHLPP2 inhibition alleviates hypoxia-induced cardiomyocyte injury by reinforcing Nrf2/ARE antioxidant signaling via inactivating GSK-3β, a pathway that highlights the importance of the PHLPP2/GSK-3β/Nrf2/ARE signaling axis in regulation of cardiomyocyte injury. Our study suggests a potential relevance for PHLPP2 in acute myocardial infarction, and this protein may serve as a promising target for cardioprotection.
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Affiliation(s)
- Aiping Jin
- Geriatric Cardiovascular Department, The Second Affiliated Hospital of Xi'an Jiaotong University (Xibei Hospital), No. 157, Xiwu Road, Xi'an, 710004, Shaanxi Province, China.
| | - Bing Li
- Geriatric Cardiovascular Department, The Second Affiliated Hospital of Xi'an Jiaotong University (Xibei Hospital), No. 157, Xiwu Road, Xi'an, 710004, Shaanxi Province, China
| | - Wei Li
- Geriatric Cardiovascular Department, The Second Affiliated Hospital of Xi'an Jiaotong University (Xibei Hospital), No. 157, Xiwu Road, Xi'an, 710004, Shaanxi Province, China
| | - Dan Xiao
- Geriatric Cardiovascular Department, The Second Affiliated Hospital of Xi'an Jiaotong University (Xibei Hospital), No. 157, Xiwu Road, Xi'an, 710004, Shaanxi Province, China
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27
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Pandey RR, Guo Y, Gao Y, Chusuei CC. A Prussian Blue ZnO Carbon Nanotube Composite for Chronoamperometrically Assaying H 2O 2 in BT20 and 4T1 Breast Cancer Cells. Anal Chem 2019; 91:10573-10581. [PMID: 31369241 DOI: 10.1021/acs.analchem.9b01636] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A Prussian Blue (PB) zinc oxide carbon nanotube sensing composite was developed for the rapid assaying of H2O2 generated from BT20 and 4T1 breast cancer cells, important for elucidating mechanisms governing apoptosis of these cell lines. The combination of H2O2's transient nature along with matrix effects makes monitoring this molecule in biological samples a challenge. The standard addition method (SAM) was coupled with chronoamperometric sensing (CA) to overcome these obstacles. An electrocatalyst composite consisting of refluxed zinc oxide nanoparticles (NPs) tethered to carboxylic acid-functionalized multiwalled carbon nanotubes (ZnO/COOH-MWNTs) was electrostatically attached to PB for signal enhancement. Optimization of the sensor was achieved via adjusting solution pH and stirring time to optimize PB electrostatic attachment to ZnO/COOH-MWNTs prior to its deposition onto the working glassy carbon electrode (GCE) surface. CA SAM showed the ability to accurately measure H2O2 within the 1-21 μM range, suitable for monitoring cancer cell line apoptosis resistance scenarios and offering analytical advantages over standard enzyme-linked immunosorbent assays (ELISA) for rapid, matrix-effect-free analysis.
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Affiliation(s)
- Raja Ram Pandey
- Department of Chemistry, 440 Friendship Street Middle Tennessee State University , Murfreesboro , Tennessee 37132 , United States
| | - Yuhang Guo
- Faculty of International Education , Guangxi University of Chinese Medicine Nanning , Guangxi 530001 , China.,International Ginseng Institute and Tennessee Center for Botanical Medicine Research School of Agriculture , Middle Tennessee State University , Murfreesboro , Tennessee 37132 , United States
| | - Ying Gao
- International Ginseng Institute and Tennessee Center for Botanical Medicine Research School of Agriculture , Middle Tennessee State University , Murfreesboro , Tennessee 37132 , United States
| | - Charles C Chusuei
- Department of Chemistry, 440 Friendship Street Middle Tennessee State University , Murfreesboro , Tennessee 37132 , United States
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Photodynamic effectiveness of laser diode combined with ozone to reduce STaphylicoccus aureus biofilm with exogenous chlorophyll of Dracaena angustifolia leaves. BIOMEDICAL PHOTONICS 2019. [DOI: 10.24931/2413-9432-2019-8-2-4-13] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Photodynamic inactivation is an effective treatment that uses light irradiation, photosensitizer and oxygen. The aim of this study was to determine photodynamic effectiveness of laser diode combined with ozone to reduce Staphylococcus aureus biofilm using exogenous chlorophyll (Chlo). The chlorophyll was extracted from leave of Dracaena angustifolia. To determine the antibacterial effect of S. aureus biofilm treatments, samples were separated into Chlo, Laser, Chlo+Laser, Ozone, Ozone+Laser, Chlo+Ozone+Laser categories. The data were analyzed using ANOVA test. The result of this study showed that Chlo+Ozone+Laser combine treatment at 20 s exposure of ozone with 4 min of irradiation time lead to 80.26 % reduction of biofilm activity, which was the highest efficacy of all the treatment groups. The combination of laser, chlorophyll and lower ozone concentration increases the effectiveness of photodynamic inactivation.
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29
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Khan F, Akhtar N, Jalal N, Hussain I, Szmigielski R, Hayat MQ, Ahmad HB, El-Said WA, Yang M, Janjua HA. Carbon-dot wrapped ZnO nanoparticle-based photoelectrochemical sensor for selective monitoring of H 2O 2 released from cancer cells. Mikrochim Acta 2019; 186:127. [PMID: 30684013 DOI: 10.1007/s00604-019-3227-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 01/04/2019] [Indexed: 11/30/2022]
Abstract
This study reports on a simple approach for the fabrication of an electrode modified with biocompatible C-dot wrapped ZnO nanoparticles for selective photoelectrochemical monitoring of H2O2 released from living cells. The biocompatibility of the ZnO nanoparticles was confirmed through in-vitro cellular testing using the MTT assay on Huh7 cell lines. The ZnO nanoparticles wrapped with dopamine-derived C-dots possess numerous catalytically active sites, excessive surface defects, good electrical conductivity, and efficient separation ability of photo-induced electrons and holes. These properties offer highly sensitive and selective non-enzymatic photo-electrochemical monitoring of H2O2 released from HeLa cells after stimulation with N-formylmethionyl-leucyl-phenylalanine. The sensor has a wide linear range (20-800 nM), low detection limit (2.4 nM), and reliable reproducibility, this implying its suitability for biological and biomedical applications. Graphical abstract Schematic of the fabrication of ZnO nanoparticles by using a plant extract as a reducing agent. Wrapping of ZnO with C-dots enhances the photoelectrocatalytic efficacy. Sensitive and selective photoelectrochemical monitoring of H2O2 released from cancer cells is demonstrated.
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Affiliation(s)
- Faria Khan
- Department of Industrial Biotechnology, Atta ur Rahman School of Applied Biosciences, National University of Science Technology (NUST), Islamabad, 44000, Pakistan.,Department of Plant Biotechnology, Atta ur Rahman School of Applied Biosciences, National University of Science Technology (NUST), Islamabad, 44000, Pakistan.,Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Naeem Akhtar
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan. .,National Institute for Materials Science (NIMS), 1-2-1 Sengen, 305-0047, Tsukuba-shi, Ibaraki-ken, Japan.
| | - Nasir Jalal
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin Shi, 300072, China
| | - Irshad Hussain
- Department of Chemistry, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore, 54792, Pakistan
| | - Rafal Szmigielski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Muhammad Qasim Hayat
- Department of Chemistry, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore, 54792, Pakistan
| | - Hafiz B Ahmad
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
| | - Waleed A El-Said
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt
| | - Minghui Yang
- Solid State Functional Materials Research Laboratory, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences (CAS), Ningbo, 315201, Zhejiang, China.
| | - Hussnain Ahmed Janjua
- Department of Industrial Biotechnology, Atta ur Rahman School of Applied Biosciences, National University of Science Technology (NUST), Islamabad, 44000, Pakistan.
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30
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Rivera JF, Sridharan SV, Nolan JK, Miloro SA, Alam MA, Rickus JL, Janes DB. Real-time characterization of uptake kinetics of glioblastoma vs. astrocytes in 2D cell culture using microelectrode array. Analyst 2018; 143:4954-4966. [PMID: 30225487 DOI: 10.1039/c8an01198b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Extracellular measurement of uptake/release kinetics and associated concentration dependencies provides mechanistic insight into the underlying biochemical processes. Due to the recognized importance of preserving the natural diffusion processes within the local microenvironment, measurement approaches which provide uptake rate and local surface concentration of adherent cells in static media are needed. This paper reports a microelectrode array device and a methodology to measure uptake kinetics as a function of cell surface concentration in adherent 2D cell cultures in static fluids. The microelectrode array simultaneously measures local concentrations at five positions near the cell surface in order to map the time-dependent concentration profile which in turn enables determination of surface concentrations and uptake rates, via extrapolation to the cell plane. Hydrogen peroxide uptake by human astrocytes (normal) and glioblastoma multiforme (GBM43, cancer) was quantified for initial concentrations of 20 to 500 μM over time intervals of 4000 s. For both cell types, the overall uptake rate versus surface concentration relationships exhibited non-linear kinetics, well-described by a combination of linear and Michaelis-Menten mechanisms and in agreement with the literature. The GBM43 cells showed a higher uptake rate over the full range of concentrations, primarily due to a larger linear component. Diffusion-reaction models using the non-linear parameters and standard first-order relationships are compared. In comparison to results from typical volumetric measurements, the ability to extract both uptake rate and surface concentration in static media provides kinetic parameters that are better suited for developing reaction-diffusion models to adequately describe behavior in more complex culture/tissue geometries. The results also highlight the need for characterization of the uptake rate over a wider range of cell surface concentrations in order to evaluate the potential therapeutic role of hydrogen peroxide in cancerous cells.
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Affiliation(s)
- Jose F Rivera
- Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.
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31
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Gao LX, Bian C, Wu Y, Nisar MF, Chen S, Li CM, Yu L, Ji P, Huang E, Zhong JL. Label-free electrochemical sensor to investigate the effect of tocopherol on generation of superoxide ions following UV irradiation. J Biol Eng 2018; 12:17. [PMID: 30220911 PMCID: PMC6134779 DOI: 10.1186/s13036-018-0099-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 04/23/2018] [Indexed: 02/05/2023] Open
Abstract
Background Generation of reactive oxygen species (ROS), triggered by ultraviolet radiation (UVR), is associated with carcinogenesis of the skin. UV irradiation induced superoxide anion (O2•−) is the key ROS involved in the cellular damage. The cytoprotective efficacy of an unknown anti-oxidant compound can be evaluated by analyzing the production of O2•− from treated cells. Methods In this study, a glass carbon electrode functionalized with nanotube@DNA-Mn3(PO4)2 composite was applied to quantitative determination of generation of highly unstable O2•− from the melanoma A375 cell line following UVR(UV, UVA and UVB). In addition, the cytoprotective efficacy of anti-oxidant α-tocopherol was evaluated by quantifying the production of O2•−. Results The results showed that, UVR triggers generation of O2•− in melanoma A375 cells, and α-tocopherol is effective in diminishing the production of O2•− following UV irradiation. By comparing the conventional cell-survival assays results, we found that our simple and quick electrochemical sensing method can quantify O2•− generation through the biological activity of an anti-oxidant compound (α-tocopherol). Conclusion Our label-free electrochemical quantification method for ROS (O2•− major) in cells facing UVR stress demonstrates its potential application for high-throughput screening of anti-oxidation compounds.
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Affiliation(s)
- Li Xia Gao
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China.,2Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715 China
| | - Chunxiang Bian
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China
| | - Yan Wu
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China
| | - Muhammad Farrukh Nisar
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China.,Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, 54000 Pakistan
| | - Shida Chen
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China
| | - Chang Ming Li
- 2Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715 China
| | - Ling Yu
- 2Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, 400715 China
| | - Ping Ji
- Chongqing Municipal Key laboratory of oral diseases and biomedical sciences, Biomedical Engineering of Higher Education, Chongqing, 401147 China
| | - Enyi Huang
- Chongqing Municipal Key laboratory of oral diseases and biomedical sciences, Biomedical Engineering of Higher Education, Chongqing, 401147 China
| | - Julia Li Zhong
- 1College of Bioengineering & School of Life Sciences, Chongqing University, Chongqing, 400044 China.,Chongqing Municipal Key laboratory of oral diseases and biomedical sciences, Biomedical Engineering of Higher Education, Chongqing, 401147 China
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32
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Protective effect of 1950 MHz electromagnetic field in human neuroblastoma cells challenged with menadione. Sci Rep 2018; 8:13234. [PMID: 30185877 PMCID: PMC6125585 DOI: 10.1038/s41598-018-31636-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/15/2018] [Indexed: 12/15/2022] Open
Abstract
This study aims to assess whether a 1950 MHz radiofrequency (RF) electromagnetic field could protect human neuroblastoma SH-SY5Y cells against a subsequent treatment with menadione, a chemical agent inducing DNA damage via reactive oxygen species formation. Cells were pre-exposed for 20 h to specific absorption rate of either 0.3 or 1.25 W/kg, and 3 h after the end of the exposure, they were treated with 10 µM menadione (MD) for 1 h. No differences were observed between sham- and RF-exposed samples. A statistically significant reduction in menadione-induced DNA damage was detected in cells pre-exposed to either 0.3 or 1.25 W/kg (P < 0.05). Moreover, our analyses of gene expression revealed that the pre-exposure to RF almost inhibited the dramatic loss of glutathione peroxidase-based antioxidant scavenging efficiency that was induced by MD, and in parallel strongly enhanced the gene expression of catalase-based antioxidant protection. In addition, RF abolished the MD-dependent down-regulation of oxoguanine DNA glycosylase, which is a critical DNA repairing enzyme. Overall, our findings suggested that RF pre-exposure reduced menadione-dependent DNA oxidative damage, most probably by enhancing antioxidant scavenging efficiency and restoring DNA repair capability. Our results provided some insights into the molecular mechanisms underlying the RF-induced adaptive response in human neuroblastoma cells challenged with menadione.
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Lai Y, Zhou C, Huang P, Dong Z, Mo C, Xie L, Lin H, Zhou Z, Deng G, Liu Y, Chen Y, Huang S, Wu Z, Sun X, Gao L, Lv Z. Polydatin alleviated alcoholic liver injury in zebrafish larvae through ameliorating lipid metabolism and oxidative stress. J Pharmacol Sci 2018; 138:46-53. [DOI: 10.1016/j.jphs.2018.08.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 08/18/2018] [Accepted: 08/22/2018] [Indexed: 02/07/2023] Open
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34
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Bozem M, Knapp P, Mirčeski V, Slowik EJ, Bogeski I, Kappl R, Heinemann C, Hoth M. Electrochemical Quantification of Extracellular Local H 2O 2 Kinetics Originating from Single Cells. Antioxid Redox Signal 2018; 29:501-517. [PMID: 28314376 PMCID: PMC6056260 DOI: 10.1089/ars.2016.6840] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
AIMS H2O2 is produced by all eukaryotic cells under physiological and pathological conditions. Due to its enormous relevance for cell signaling at low concentrations and antipathogenic function at high concentrations, precise quantification of extracellular local hydrogen peroxide concentrations ([H2O2]) originating from single cells is required. RESULTS Using a scanning electrochemical microscope and bare platinum disk ultramicroelectrodes, we established sensitive long-term measurements of extracellular [H2O2] kinetics originating from single primary human monocytes (MCs) ex vivo. For the electrochemical techniques square wave voltammetry, cyclic and linear scan voltammetry, and chronoamperometry, detection limits for [H2O2] were determined to be 5, 50, and 500 nM, respectively. Following phorbol ester stimulation, local [H2O2] 5-8 μm above a single MC increased by 3.4 nM/s within the first 10 min before reaching a plateau. After extracellular addition of H2O2 to an unstimulated MC, the local [H2O2] decreased on average by 4.2 nM/s due to degradation processes of the cell. Using the scanning mode of the setup, we found that H2O2 is evenly distributed around the producing cell and can still be detected up to 30 μm away from the cell. The electrochemical single-cell measurements were validated in MC populations using electron spin resonance spectroscopy and the Amplex® UltraRed assay. Innovation and Conclusion: We demonstrate a highly sensitive, spatially, and temporally resolved electrochemical approach to monitor dynamics of production and degradation processes for H2O2 separately. Local extracellular [H2O2] kinetics originating from single cells is quantified in real time. Antioxid. Redox Signal. 29, 501-517.
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Affiliation(s)
- Monika Bozem
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany
| | - Phillip Knapp
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany
| | - Valentin Mirčeski
- 2 Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss Kiril i Metodij University , Skopje, Macedonia
| | - Ewa J Slowik
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany
| | - Ivan Bogeski
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany .,3 Cardiovascular Physiology, University Medical Center, University of Göttingen , Göttingen, Germany
| | - Reinhard Kappl
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany
| | | | - Markus Hoth
- 1 Department of Biophysics, Faculty of Medicine, Center for Integrative Physiology and Molecular Medicine (CIPMM), Saarland University , Homburg, Germany
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Metabolic enhancers supporting 1-carbon cycle affect sperm functionality: an in vitro comparative study. Sci Rep 2018; 8:11769. [PMID: 30082742 PMCID: PMC6079007 DOI: 10.1038/s41598-018-30066-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/19/2018] [Indexed: 12/22/2022] Open
Abstract
The sperm plasma membrane is a sensitive target to oxidative stress. The most representative reactive oxygen species (ROS) scavengers in the genital tract, hypotaurine and glutathione, require, for their synthesis, cysteine whose availability is associated with the 1-carbon cycle (1-CC). Human, bovine and ascidian spermatozoa were incubated with compounds supporting the 1-CC (Vitamin B6, Methylcobalamin, 5 Methyl Tetrahydrofolate, Zinc Bisglycinate and N-acetyl-cysteine) (TRT) and compared to the effects induced solely by N-acetyl-cysteine (NAC). In control groups (CNTRL), spermatozoa were incubated with medium alone. After 90 and 180 minutes of incubation, the mitochondrial membrane potential (ΔΨM) in TRT and NAC was significantly (P < 0.01) higher than in CNTRL. At H2DCFDA evaluation, ROS production differed between species whereas, at 2-OH Ethidium, it significantly decreased in bovine TRT group. Intracellular pH (pHi) did not significantly vary in relation to treatment. In ascidian spermatozoa, the NAC supplementation decreased external pH, which in turn brought to a pHi lowering. Buffering seawater with NaHCO3 reversed the beneficial effects of N-acetyl-cysteine supplementation. In conclusion, both fully supporting the 1-CC and treatment with N-acetyl-cysteine alone improved kinetics, ΔΨM and ROS production in mammalian sperm demonstrating for the first time the direct in vitro effects of these compounds on sperm functionality.
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Domracheva I, Kanepe-Lapsa I, Jackevica L, Vasiljeva J, Arsenyan P. Selenopheno quinolinones and coumarins promote cancer cell apoptosis by ROS depletion and caspase-7 activation. Life Sci 2017; 186:92-101. [PMID: 28807721 DOI: 10.1016/j.lfs.2017.08.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 12/21/2022]
Abstract
AIM This study was designed to investigate the mechanism underlying cancer cell apoptosis caused by selenophenoquinolinones and coumarins. MATERIALS AND METHODS Twelve derivatives were studied according to their ability to suppress the proliferation of cancer cells in vitro (i.e., HepG2, MH-22A, MCF-7), induce cell apoptosis, modulate cellular antioxidant enzyme system activities (i.e., SOD, GPx, TrxR), influence the level of ROS, and modulate caspase activity. RESULTS A plausible mechanism of apoptosis is presented. The lack of change in the activity of caspase-8 demonstrates that these compounds affect the intrinsic rather than the extrinsic pathway; moreover, the absence of caspase-9 activation suggests that the studied compounds are involved in the intrinsic pathway of apoptosis in a non-canonical manner. Provisionally, the increase in Smac/Diablo released from the mitochondria removes the inhibitory effect and activates caspase-7, leading to apoptosis. Additionally, the activation of caspase-1 activates effector caspase-7, thereby increasing the amount of cytochrome c and Smac/Diablo released from the mitochondria and ultimately leading to apoptosis. CONCLUSION This present study provides scientific evidence that selenopheno quinolinones and coumarins promote cancer cell apoptosis by ROS depletion and caspase-7 activation in malignant cells.
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Affiliation(s)
- Ilona Domracheva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Iveta Kanepe-Lapsa
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Ludmila Jackevica
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Jelena Vasiljeva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Pavel Arsenyan
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
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37
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Biswas A, Banerjee S, Gart EV, Nagaraja AT, McShane MJ. Gold Nanocluster Containing Polymeric Microcapsules for Intracellular Ratiometric Fluorescence Biosensing. ACS OMEGA 2017; 2:2499-2506. [PMID: 30023667 PMCID: PMC6044823 DOI: 10.1021/acsomega.7b00199] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/26/2017] [Indexed: 05/31/2023]
Abstract
A new approach to sensing and imaging hydrogen peroxide (H2O2) was developed using microcapsule-based dual-emission ratiometric luminescent biosensors. Bovine serum albumin-capped gold nanoclusters (BSA-AuNCs) sensitive to H2O2 were coencapsulated with insensitive FluoSpheres (FSs) within polymeric capsules fabricated via the layer-by-layer method. Under single-wavelength excitation, the microcapsule-based biosensors exhibited emission bands at ∼516 and ∼682 nm resulting from the FSs and BSA-AuNCs, respectively. The polyelectrolyte multilayers lining the microcapsules were effective in protecting BSA-AuNCs from the degradation catalyzed by proteases (chymotrypsin, trypsin, papain, and proteinase K) and subsequent luminescent quenching, overcoming a key limitation of prior BSA-AuNC-based sensing systems. The luminescent response of the sensors was also found to be independent of local changes in pH (5-9). Quenching of the AuNCs in the presence of H2O2 enabled the spectroscopic quantification and imaging of changes in H2O2 concentration from 0 to 1 mM. The microcapsule sensors were easily phagocytized by murine macrophage cells (RAW 264.7), were effective as intracellular H2O2 imaging probes, and were successfully used to detect local release of H2O2 in response to an external chemical stimulus.
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Affiliation(s)
- Aniket Biswas
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Swayoma Banerjee
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Elena V. Gart
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Ashvin T. Nagaraja
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Michael J. McShane
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
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Glory A, Averill-Bates DA. The antioxidant transcription factor Nrf2 contributes to the protective effect of mild thermotolerance (40°C) against heat shock-induced apoptosis. Free Radic Biol Med 2016; 99:485-497. [PMID: 27591796 DOI: 10.1016/j.freeradbiomed.2016.08.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 08/07/2016] [Accepted: 08/31/2016] [Indexed: 10/21/2022]
Abstract
The exposure of cells to low doses of stress induces adaptive survival responses that protect cells against subsequent exposure to toxic stress. The ability of cells to resist subsequent toxic stress following exposure to low dose heat stress at 40°C is known as mild thermotolerance. Mild thermotolerance involves increased expression of heat shock proteins and antioxidants, but the initiating factors in this response are not understood. This study aims to understand the role of the Nrf2 antioxidant pathway in acquisition of mild thermotolerance at 40°C, and secondly, whether the Nrf2 pathway could be involved in the protective effect of thermotolerance against heat-shock (42°C)-induced apoptosis. During cell preconditioning at 40°C, protein expression of the Nrf2 transcription factor increased after 15-60min. In addition, levels of the Nrf2 targets MnSOD, catalase, heme oxygenase-1, glutamate cysteine ligase and Hsp70 increased at 40°C. Levels of these Nrf2 targets were enhanced by Nrf2 activator oltipraz and decreased by shRNA targeting Nrf2. Levels of pro-oxidants increased after 30-60min at 40°C. Pro-oxidant levels were decreased by oltipraz and increased by knockdown of Nrf2. Increased Nrf2 expression and catalase activity at 40°C were inhibited by the antioxidant PEG-catalase and by p53 inhibitor pifithrin-α. These results suggest that mild thermotolerance (40°C) increases cellular pro-oxidant levels, which in turn activate Nrf2 and its target genes. Moreover, Nrf2 contributes to the protective effect of thermotolerance against heat-shock (42°C)-induced apoptosis, because Nrf2 activation by oltipraz enhanced thermotolerance, whereas Nrf2 knockdown partly reversed thermotolerance. Improved knowledge about the different protective mechanisms that mild thermotolerance can activate is crucial for the potential use of this adaptive survival response to treat stress-related diseases.
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Affiliation(s)
- Audrey Glory
- Département des Sciences Biologiques (TOXEN), Université du Québec à Montréal, CP 8888, Succursale Center-Ville Montréal, Montréal, Québec, Canada H3C 3P8
| | - Diana A Averill-Bates
- Département des Sciences Biologiques (TOXEN), Université du Québec à Montréal, CP 8888, Succursale Center-Ville Montréal, Montréal, Québec, Canada H3C 3P8.
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39
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Quantifying ROS levels using CM-H 2 DCFDA and HyPer. Methods 2016; 109:3-11. [DOI: 10.1016/j.ymeth.2016.06.008] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 06/10/2016] [Accepted: 06/11/2016] [Indexed: 11/24/2022] Open
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40
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Wages PA, Cheng WY, Gibbs-Flournoy E, Samet JM. Live-cell imaging approaches for the investigation of xenobiotic-induced oxidant stress. Biochim Biophys Acta Gen Subj 2016; 1860:2802-15. [PMID: 27208426 DOI: 10.1016/j.bbagen.2016.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Oxidant stress is arguably a universal feature in toxicology. Research studies on the role of oxidant stress induced by xenobiotic exposures have typically relied on the identification of damaged biomolecules using a variety of conventional biochemical and molecular techniques. However, there is increasing evidence that low-level exposure to a variety of toxicants dysregulates cellular physiology by interfering with redox-dependent processes. SCOPE OF REVIEW The study of events involved in redox toxicology requires methodology capable of detecting transient modifications at relatively low signal strength. This article reviews the advantages of live-cell imaging for redox toxicology studies. MAJOR CONCLUSIONS Toxicological studies with xenobiotics of supra-physiological reactivity require careful consideration when using fluorogenic sensors in order to avoid potential artifacts and false negatives. Fortunately, experiments conducted for the purpose of validating the use of these sensors in toxicological applications often yield unexpected insights into the mechanisms through which xenobiotic exposure induces oxidant stress. GENERAL SIGNIFICANCE Live-cell imaging using a new generation of small molecule and genetically encoded fluorophores with excellent sensitivity and specificity affords unprecedented spatiotemporal resolution that is optimal for redox toxicology studies. This article is part of a Special Issue entitled Air Pollution, edited by Wenjun Ding, Andrew J. Ghio and Weidong Wu.
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Affiliation(s)
- Phillip A Wages
- Curriculum in Toxicology, University of North Carolina at Chapel Hill, NC, USA
| | - Wan-Yun Cheng
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA; Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, Research Triangle Park, NC, USA
| | - Eugene Gibbs-Flournoy
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA; Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, Research Triangle Park, NC, USA
| | - James M Samet
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, Research Triangle Park, NC, USA.
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41
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Kim YJ. Rhamnazin inhibits LPS-induced inflammation and ROS/RNS in raw macrophages. ACTA ACUST UNITED AC 2016. [DOI: 10.4163/jnh.2016.49.5.288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- You Jung Kim
- Department of Dental Hygiene, Busan Women's College, Busanjin-Gu, Busan 47228, Korea
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42
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Koren K, Jensen PØ, Kühl M. Development of a rechargeable optical hydrogen peroxide sensor – sensor design and biological application. Analyst 2016; 141:4332-9. [DOI: 10.1039/c6an00864j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Measure and recharge!A reversible sensor concept enables repetitive and quantitative measurement of H2O2with high spatial and temporal resolution in environmental and biomedical samples.
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Affiliation(s)
- Klaus Koren
- Marine Biological Section
- Department of Biology
- University of Copenhagen
- Denmark
| | - Peter Ø. Jensen
- Department of Clinical Microbiology
- Rigshospitalet Copenhagen
- 2100 Copenhagen
- Denmark
| | - Michael Kühl
- Marine Biological Section
- Department of Biology
- University of Copenhagen
- Denmark
- Plant Functional Biology and Climate Change Cluster
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43
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Zhang W, Liu W, Li P, Huang F, Wang H, Tang B. Rapid-Response Fluorescent Probe for Hydrogen Peroxide in Living Cells Based on Increased Polarity of C–B Bonds. Anal Chem 2015; 87:9825-8. [DOI: 10.1021/acs.analchem.5b02194] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Wei Zhang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Wei Liu
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Ping Li
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Fang Huang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Hui Wang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Bo Tang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation Center
of Functionalized Probes for Chemical Imaging in Universities of Shandong,
Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, People’s Republic of China
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44
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Yu L, Tian Y, Gao A, Shi Z, Liu Y, Li C. Bi-module sensing device to in situ quantitatively detect hydrogen peroxide released from migrating tumor cells. PLoS One 2015; 10:e0127610. [PMID: 26035641 PMCID: PMC4452705 DOI: 10.1371/journal.pone.0127610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/17/2015] [Indexed: 01/02/2023] Open
Abstract
Cell migration is one of the key cell functions in physiological and pathological processes, especially in tumor metastasis. However, it is not feasible to monitor the important biochemical molecules produced during cell migrations in situ by conventional cell migration assays. Herein, for the first time a device containing both electrochemical sensing and trans-well cell migration modules was fabricated to sensitively quantify biochemical molecules released from the cell migration process in situ. The fully assembled device with a multi-wall carbon nanotube/graphene/MnO2 nanocomposite functionalized electrode was able to successfully characterize hydrogen peroxide (H2O2) production from melanoma A375 cells, larynx carcinoma HEp-2 cells and liver cancer Hep G2 under serum established chemotaxis. The maximum concentration of H2O2 produced from A375, HEp-2 and Hep G2 in chemotaxis was 130±1.3 nM, 70±0.7 nM and 63±0.7 nM, respectively. While the time required reaching the summit of H2O2 production was 3.0, 4.0 and 1.5 h for A375, HEp-2 and Hep G2, respectively. By staining the polycarbonate micropore membrane disassembled from the device, we found that the average migration rate of the A375, HEp-2 and Hep G2 cells were 98±6%, 38±4% and 32 ±3%, respectively. The novel bi-module cell migration platform enables in situ investigation of cell secretion and cell function simultaneously, highlighting its potential for characterizing cell motility through monitoring H2O2 production on rare samples and for identifying underlying mechanisms of cell migration.
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Affiliation(s)
- Ling Yu
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
- * E-mail: (LY); (YSL)
| | - YunLi Tian
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
| | - AnXiu Gao
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
| | - ZhuanZhuan Shi
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
| | - YingShuai Liu
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
- * E-mail: (LY); (YSL)
| | - ChangMing Li
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing 400715, China
- Chongqing Engineering Research Center for Rapid diagnosis of Fatal Diseases, Chongqing 400715, China
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Giorgi C, Missiroli S, Patergnani S, Duszynski J, Wieckowski MR, Pinton P. Mitochondria-associated membranes: composition, molecular mechanisms, and physiopathological implications. Antioxid Redox Signal 2015; 22:995-1019. [PMID: 25557408 DOI: 10.1089/ars.2014.6223] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
SIGNIFICANCE In all cells, the endoplasmic reticulum (ER) and mitochondria are physically connected to form junctions termed mitochondria-associated membranes (MAMs). This subcellular compartment is under intense investigation because it represents a "hot spot" for the intracellular signaling of important pathways, including the synthesis of cholesterol and phospholipids, calcium homeostasis, and reactive oxygen species (ROS) generation and activity. RECENT ADVANCES The advanced methods currently used to study this fascinating intracellular microdomain in detail have enabled the identification of the molecular composition of MAMs and their involvement within different physiopathological contexts. CRITICAL ISSUES Here, we review the knowledge regarding (i) MAMs composition in terms of protein composition, (ii) the relationship between MAMs and ROS, (iii) the involvement of MAMs in cell death programs with particular emphasis within the tumor context, (iv) the emerging role of MAMs during inflammation, and (v) the key role of MAMs alterations in selected neurological disorders. FUTURE DIRECTIONS Whether alterations in MAMs represent a response to the disease pathogenesis or directly contribute to the disease has not yet been unequivocally established. In any case, the signaling at the MAMs represents a promising pharmacological target for several important human diseases.
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Affiliation(s)
- Carlotta Giorgi
- 1 Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), Department of Morphology, Surgery and Experimental Medicine, University of Ferrara , Ferrara, Italy
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46
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Zuidema MY, Korthuis RJ. Intravital microscopic methods to evaluate anti-inflammatory effects and signaling mechanisms evoked by hydrogen sulfide. Methods Enzymol 2015; 555:93-125. [PMID: 25747477 PMCID: PMC4722536 DOI: 10.1016/bs.mie.2014.11.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hydrogen sulfide (H2S) is an endogenous gaseous signaling molecule with potent anti-inflammatory properties. Exogenous application of H2S donors, administered either acutely during an inflammatory response or as an antecedent preconditioning intervention that invokes the activation of anti-inflammatory cell survival programs, effectively limits leukocyte rolling, adhesion and emigration, generation of reactive oxygen species, chemokine and cell adhesion molecule expression, endothelial barrier disruption, capillary perfusion deficits, and parenchymal cell dysfunction and injury. This chapter focuses on intravital microscopic methods that can be used to assess the anti-inflammatory effects exerted by H2S, as well as to explore the cellular signaling mechanisms by which this gaseous molecule limits the aforementioned inflammatory responses. Recent advances include use of intravital multiphoton microscopy and optical biosensor technology to explore signaling mechanisms in vivo.
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Affiliation(s)
- Mozow Y Zuidema
- Harry S. Truman Veterans Administration Hospital, Cardiology, Columbia, Missouri, USA
| | - Ronald J Korthuis
- Department of Medical Pharmacology and Physiology, School of Medicine, One Hospital Drive, University of Missouri, Columbia, Missouri, USA; Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA.
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47
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Joshi-Barr S, de Gracia Lux C, Mahmoud E, Almutairi A. Exploiting oxidative microenvironments in the body as triggers for drug delivery systems. Antioxid Redox Signal 2014; 21:730-54. [PMID: 24328819 PMCID: PMC4098119 DOI: 10.1089/ars.2013.5754] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
SIGNIFICANCE Reactive oxygen species and reactive nitrogen species (ROS/RNS) play an important role in cell signaling pathways. However, the increased production of these species may disrupt cellular homeostasis, giving rise to pathological conditions. Biomaterials that are responsive to ROS/RNS can be strategically used to specifically release therapeutics and diagnostic agents to regions undergoing oxidative stress. RECENT ADVANCES Many nanocarriers intended to exploit redox micro-environments as triggers for drug release, summarized and compared in this review, have recently been developed. We describe these carriers' chemical structures, strategies for payload protection and oxidation-selective release, and ROS/RNS sensitivity as tested in initial studies. CRITICAL ISSUES ROS/RNS are unstable, so reliable measures of their concentrations in various conditions are scarce. Combined with the dearth of materials shown to respond to physiologically relevant levels of ROS/RNS, evaluations of their true sensitivity are difficult. FUTURE DIRECTIONS Oxidation-responsive nanocarriers developed thus far show tremendous potential for applicability in vivo; however, the sensitivity of these chemistries needs to be fine tuned to enable responses to physiological levels of ROS and RNS.
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Affiliation(s)
- Shivanjali Joshi-Barr
- 1 Skaggs School of Pharmacy and Pharmaceutical Sciences, Laboratory of Bioresponsive Materials, University of California , San Diego, San Diego, California
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48
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Sies H. Role of metabolic H2O2 generation: redox signaling and oxidative stress. J Biol Chem 2014; 289:8735-41. [PMID: 24515117 DOI: 10.1074/jbc.r113.544635] [Citation(s) in RCA: 485] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Hydrogen peroxide, the nonradical 2-electron reduction product of oxygen, is a normal aerobic metabolite occurring at about 10 nm intracellular concentration. In liver, it is produced at 50 nmol/min/g of tissue, which is about 2% of total oxygen uptake at steady state. Metabolically generated H2O2 emerged from recent research as a central hub in redox signaling and oxidative stress. Upon generation by major sources, the NADPH oxidases or Complex III of the mitochondrial respiratory chain, H2O2 is under sophisticated fine control of peroxiredoxins and glutathione peroxidases with their backup systems as well as by catalase. Of note, H2O2 is a second messenger in insulin signaling and in several growth factor-induced signaling cascades. H2O2 transport across membranes is facilitated by aquaporins, denoted as peroxiporins. Specialized protein cysteines operate as redox switches using H2O2 as thiol oxidant, making this reactive oxygen species essential for poising the set point of the redox proteome. Major processes including proliferation, differentiation, tissue repair, inflammation, circadian rhythm, and aging use this low molecular weight oxygen metabolite as signaling compound.
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Affiliation(s)
- Helmut Sies
- From the From the Institute of Biochemistry and Molecular Biology I, and
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49
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Wojtala A, Bonora M, Malinska D, Pinton P, Duszynski J, Wieckowski MR. Methods to monitor ROS production by fluorescence microscopy and fluorometry. Methods Enzymol 2014; 542:243-62. [PMID: 24862270 DOI: 10.1016/b978-0-12-416618-9.00013-3] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mitochondria are considered one of the main sources of reactive oxygen species (ROS). The overgeneration of ROS can evoke an intracellular state of oxidative stress, leading to permanent cell damage. Thus, the intracellular accumulation of ROS may not only disrupt the functions of specific tissues and organs but also lead to the premature death of the entire organism. Less severe increases in ROS levels may lead to the nonlethal oxidation of fundamental cellular components, such as proteins, phospholipids, and DNA, hence exerting a mutagenic effect that promotes oncogenesis and tumor progression. Here, we describe the use of chemical probes for the rapid detection of ROS in intact and permeabilized adherent cells by fluorescence microscopy and fluorometry. Moreover, after discussing the limitations described in the literature for the fluorescent probes presented herein, we recommend methods to assess the production of specific ROS in various fields of investigation, including the study of oncometabolism.
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Affiliation(s)
| | - Massimo Bonora
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Centre for the Study of Inflammation (ICSI), BioPharmaNet, University of Ferrara, Ferrara, Italy
| | | | - Paolo Pinton
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Centre for the Study of Inflammation (ICSI), BioPharmaNet, University of Ferrara, Ferrara, Italy
| | | | - Mariusz R Wieckowski
- Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland.
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50
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Joyner-Matos J, Puntarulo S, Vázquez-Medina JP, Zenteno-Savín T. Oxidative stress in aquatic ecosystems: selected papers from the First International Conference. Preface. Comp Biochem Physiol A Mol Integr Physiol 2013; 165:381-3. [PMID: 23608366 DOI: 10.1016/j.cbpa.2013.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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