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Bregnhøj M, Thorning F, Ogilby PR. Singlet Oxygen Photophysics: From Liquid Solvents to Mammalian Cells. Chem Rev 2024; 124:9949-10051. [PMID: 39106038 DOI: 10.1021/acs.chemrev.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Molecular oxygen, O2, has long provided a cornerstone for studies in chemistry, physics, and biology. Although the triplet ground state, O2(X3Σg-), has garnered much attention, the lowest excited electronic state, O2(a1Δg), commonly called singlet oxygen, has attracted appreciable interest, principally because of its unique chemical reactivity in systems ranging from the Earth's atmosphere to biological cells. Because O2(a1Δg) can be produced and deactivated in processes that involve light, the photophysics of O2(a1Δg) are equally important. Moreover, pathways for O2(a1Δg) deactivation that regenerate O2(X3Σg-), which address fundamental principles unto themselves, kinetically compete with the chemical reactions of O2(a1Δg) and, thus, have practical significance. Due to technological advances (e.g., lasers, optical detectors, microscopes), data acquired in the past ∼20 years have increased our understanding of O2(a1Δg) photophysics appreciably and facilitated both spatial and temporal control over the behavior of O2(a1Δg). One goal of this Review is to summarize recent developments that have broad ramifications, focusing on systems in which oxygen forms a contact complex with an organic molecule M (e.g., a liquid solvent). An important concept is the role played by the M+•O2-• charge-transfer state in both the formation and deactivation of O2(a1Δg).
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Affiliation(s)
- Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Frederik Thorning
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
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2
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Liu Z, Wang L, Sun R, Wu H, Wang Y, Zhang S, Li G, Shao K, Akkaya EU. Targeted Endoperoxides Delivering Singlet Oxygen to Cancer Cell Mitochondria: Exploration of the Therapeutic Potential. Chemistry 2024; 30:e202401277. [PMID: 38847268 DOI: 10.1002/chem.202401277] [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: 03/31/2024] [Accepted: 06/05/2024] [Indexed: 08/21/2024]
Abstract
The clinical practice of photodynamic therapy of cancer (PDT) is mostly limited to superficial types of cancer. The major reason behind this limited applicability is the need for light in the photogeneration of ROS, and in particular singlet oxygen. In order to circumvent this major roadblock, we designed and synthesized naphthalene-derived endoperoxides with mitochondria targeting triphenylphosphonium moieties. Here, we show that these compounds release singlet oxygen by thermal cycloreversion, and initiate cell death with IC50<10 μM in cancer cell cultures. The mouse 4T1 breast tumor model study, where the endoperoxide compound was introduced intraperitoneally, also showed highly promising results, with negligible systemic toxicity. Targeted delivery of singlet oxygen to cancer cell mitochondria could be the breakthrough needed to transform Photodynamic Therapy into a broadly applicable methodology for cancer treatment by keeping the central tenet and discarding problematic dependencies on oxygen or external light.
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Affiliation(s)
- Ziang Liu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Lei Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Rensong Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Hao Wu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Yang Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Shengli Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Guangzhe Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Kun Shao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
| | - Engin U Akkaya
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, P. R. China
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Im YH, Ha JW. The synergistic bactericidal effect of simultaneous 222 nm krypton-chlorine excilamp and 307 nm UVB light treatment on sliced cheese and its mechanisms. Food Microbiol 2024; 122:104552. [PMID: 38839232 DOI: 10.1016/j.fm.2024.104552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/12/2024] [Accepted: 04/18/2024] [Indexed: 06/07/2024]
Abstract
In this study, we investigated the combined effect of 222 nm krypton-chlorine excilamp (EX) and 307 nm ultraviolet-B (UVB) light on the inactivation of Salmonella Typhimurium and Listeria monocytogenes on sliced cheese. The data confirmed that simultaneous exposure to EX and UVB irradiation for 80 s reduced S. Typhimurium and L. monocytogenes population by 3.50 and 3.20 log CFU/g, respectively, on sliced cheese. The synergistic cell count reductions in S. Typhimurium and L. monocytogenes in the combined treatment group were 0.88 and 0.59 log units, respectively. The inactivation mechanism underlying the EX and UVB combination treatment was evaluated using fluorescent staining. The combination of EX and UVB light induced the inactivation of reactive oxygen species (ROS) defense enzymes (superoxide dismutase) and synergistic ROS generation, resulting in synergistic lipid peroxidation and destruction of the cell membrane. There were no significant (P > 0.05) differences in the color, texture, or sensory attributes of sliced cheese between the combination treatment and control groups. These results demonstrate that combined treatment with EX and UVB light is a potential alternative strategy for inactivating foodborne pathogens in dairy products without affecting their quality.
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Affiliation(s)
- Yu-Hyun Im
- Department of Food Science and Biotechnology, Global K-Food Research Center, Hankyong National University, Anseong-si, 17579, South Korea
| | - Jae-Won Ha
- Department of Food Science and Biotechnology, Global K-Food Research Center, Hankyong National University, Anseong-si, 17579, South Korea.
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Gomes FL, Jeong SH, Shin SR, Leijten J, Jonkheijm P. Engineering Synthetic Erythrocytes as Next-Generation Blood Substitutes. ADVANCED FUNCTIONAL MATERIALS 2024; 34:2315879. [PMID: 39386164 PMCID: PMC11460667 DOI: 10.1002/adfm.202315879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Indexed: 10/12/2024]
Abstract
Blood scarcity is one of the main causes of healthcare disruptions worldwide, with blood shortages occurring at an alarming rate. Over the last decades, blood substitutes has aimed at reinforcing the supply of blood, with several products (e.g., hemoglobin-based oxygen carriers, perfluorocarbons) achieving a limited degree of success. Regardless, there is still no widespread solution to this problem due to persistent challenges in product safety and scalability. In this Review, we describe different advances in the field of blood substitution, particularly in the development of artificial red blood cells, otherwise known as engineered erythrocytes. We categorize the different strategies into natural, synthetic, or hybrid approaches, and discuss their potential in terms of safety and scalability. We identify synthetic engineered erythrocytes as the most powerful approach, and describe erythrocytes from a materials engineering perspective. We review their biological structure and function, as well as explore different methods of assembling a material-based cell. Specifically, we discuss how to recreate size, shape, and deformability through particle fabrication, and how to recreate the functional machinery through synthetic biology and nanotechnology. We conclude by describing the versatile nature of synthetic erythrocytes in medicine and pharmaceuticals and propose specific directions for the field of erythrocyte engineering.
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Affiliation(s)
- Francisca L Gomes
- Department of Molecules and Materials, Laboratory of Biointerface Chemistry, Faculty of Science and Technology, Technical Medical Centre and MESA+ Institute, University of Twente, Drienerlolaan 5, Enschede, 7522NB,The Netherlands
- Department of Developmental BioEngineering, Leijten Laboratory, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, Enschede, 7522NB, The Netherlands
| | - Seol-Ha Jeong
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA, 02139, USA
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA, 02139, USA
| | - Jeroen Leijten
- Department of Developmental BioEngineering, Leijten Laboratory, Faculty of Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, Enschede, 7522NB, The Netherlands
| | - Pascal Jonkheijm
- Department of Molecules and Materials, Laboratory of Biointerface Chemistry, Faculty of Science and Technology, Technical Medical Centre and MESA+ Institute, University of Twente, Drienerlolaan 5, Enschede, 7522NB,The Netherlands
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Singh P, Chen Y, Youden B, Oakley D, Carrier A, Oakes K, Servos M, Jiang R, Zhang X. Accelerated cascade melanoma therapy using enzyme-nanozyme-integrated dissolvable polymeric microneedles. Int J Pharm 2024; 652:123814. [PMID: 38280502 DOI: 10.1016/j.ijpharm.2024.123814] [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: 09/11/2023] [Revised: 12/16/2023] [Accepted: 01/14/2024] [Indexed: 01/29/2024]
Abstract
Dissolvable polymeric microneedles (DPMNs) have emerged as a powerful technology for the localized treatment of diseases, such as melanoma. Herein, we fabricated a DPMN patch containing a potent enzyme-nanozyme composite that transforms the upregulated glucose consumption of cancerous cells into lethal reactive oxygen species via a cascade reaction accelerated by endogenous chloride ions and external near-infrared (NIR) irradiation. This was accomplished by combining glucose oxidase (Gox) with a NIR-responsive chloroperoxidase-like copper sulfide (CuS) nanozyme. In contrast with subcutaneous injection, the microneedle system highly localizes the treatment, enhancing nanomedicine uptake by the tumor and reducing its systemic exposure to the kidneys and spleen. NIR irradiation further controls the potency and toxicity of the formulation by thermally disabling Gox. In a mouse melanoma model, this unique combination of photothermal, starvation, and chemodynamic therapies resulted in complete tumor eradication (99.2 ± 0.8 % reduction in tumor volume within 10 d) without producing signs of systemic toxicity. By comparison, other treatment combinations only resulted in a 42-76.5 % reduction in tumor growth. The microneedle patch design is therefore not only highly potent but also with regulated toxicity and improved safety.
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Affiliation(s)
- Parbeen Singh
- Department of Biological Applied Engineering, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Yongli Chen
- Shenzhen Siyomicro BIO-TECH CO., Ltd., Shenzhen 518116, China
| | - Brian Youden
- Department of Biology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - David Oakley
- Department of Biology, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Andrew Carrier
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Ken Oakes
- Department of Biology, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Mark Servos
- Department of Biology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Runqing Jiang
- Department of Biology, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada; Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, ON N2G 1G3, Canada.
| | - Xu Zhang
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada.
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Pardhe BD, Oh TJ. Analysis of critical residues for peroxygenation and improved peroxygenase activity via in situ H 2O 2 generation in CYP105D18. Front Microbiol 2023; 14:1296202. [PMID: 38149268 PMCID: PMC10750395 DOI: 10.3389/fmicb.2023.1296202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/20/2023] [Indexed: 12/28/2023] Open
Abstract
Limited numbers of CYPs have been reported to work naturally as peroxygenases. The peroxide shunt pathway can be efficiently used as an alternative for the NAD(P)H and reductase systems, particularly in high hydrogen peroxide (H2O2) resistance CYPs. We reported the structural and biochemical features of CYP105D18 peroxygenase for its high H2O2 tolerance capacity. Q348 was a crucial residue for the stability of CYP105D18 during the exposure to H2O2. In addition, the role of the hydrophilic amino acid T239 from the I helix for peroxygenation and regiospecificity toward testosterone was investigated. Interestingly, T239E differs in product formation from wild type, catalyzing testosterone to androstenedione in the presence of H2O2. The other variant, T239A, worked with the Pdx/Pdr system and was unable to catalyze testosterone conversion in the presence of H2O2, suggesting the transformation of peroxygenase into monooxygenase. CYP105D18 supported the alternative method of H2O2 used for the catalysis of testosterone. The use of the same concentration of urea hydrogen peroxide adducts in place of direct H2O2 was more efficient for 2β-hydroxytestosterone conversion. Furthermore, in situ H2O2 generation using GOx/glucose system enhanced the catalytic efficiency (kcat/Km) for wild type and F184A by 1.3- and 1.9-fold, respectively, compared to direct use of H2O2 The engineering of CYP105D18, its improved peroxygenase activity, and alteration in the product oxidation facilitate CYP105D18 as a potential candidate for biotechnological applications.
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Affiliation(s)
- Bashu Dev Pardhe
- Department of Life Science and Biochemical Engineering, Graduate School, SunMoon University, Asan, Republic of Korea
| | - Tae-Jin Oh
- Department of Life Science and Biochemical Engineering, Graduate School, SunMoon University, Asan, Republic of Korea
- Genome-Based BioIT Convergence Institute, Asan, Republic of Korea
- Department of Pharmaceutical Engineering and Biotechnology, SunMoon University, Asan, Republic of Korea
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7
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Domka W, Bartusik-Aebisher D, Przygoda M, Dynarowicz K, Tomik J, Aebisher D. PDT-Induced Activation Enhanced by Hormone Response to Treatment. Int J Mol Sci 2023; 24:13917. [PMID: 37762219 PMCID: PMC10531063 DOI: 10.3390/ijms241813917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/02/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Photodynamic therapy (PDT) is a medical treatment with the use of a photosensitizing agent (PS), which, when activated by light, results in selective tissue damage with a cytotoxic effect on tumor cells. PDT leads to the induction of an acute-phase response, which results in the involvement of adrenal glucocorticoid (GC) hormones. PDT, by activating the hormonal response, affects the treatment of cancer. GC release is observed due to adrenal activity, which is driven by changes in the hypothalamic pituitary-adrenal axis triggered by stress signals emanating from the PDT treated tumor. The hormones released in this process in the context of the PDT-induced acute-phase response perform many important functions during anticancer therapy. They lead, among other things, to the systemic mobilization of neutrophils and the production of acute-phase reagents, and also control the production of immunoregulatory proteins and proteins that modulate inflammation. GCs can radically affect the activity of various inflammatory and immune cells, including the apoptosis of cancer cells. A better understanding of the modulation of GC activity could improve the outcomes of cancer patients treated with PDT.
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Affiliation(s)
- Wojciech Domka
- Department of Otolaryngology, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland;
| | - Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland;
| | - Maria Przygoda
- Students English Division Science Club, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland;
| | - Klaudia Dynarowicz
- Center for Innovative Research in Medical and Natural Sciences, Medical College of the University of Rzeszów, 35-310 Rzeszów, Poland;
| | - Jerzy Tomik
- Department of Otolaryngology, Collegium Medicum, Jagiellonian University, 30-688 Krakow, Poland;
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Medical College of the University of Rzeszów, 35-959 Rzeszów, Poland
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8
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Kumar N, He J, Rusling JF. Electrochemical transformations catalyzed by cytochrome P450s and peroxidases. Chem Soc Rev 2023; 52:5135-5171. [PMID: 37458261 DOI: 10.1039/d3cs00461a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Cytochrome P450s (Cyt P450s) and peroxidases are enzymes featuring iron heme cofactors that have wide applicability as biocatalysts in chemical syntheses. Cyt P450s are a family of monooxygenases that oxidize fatty acids, steroids, and xenobiotics, synthesize hormones, and convert drugs and other chemicals to metabolites. Peroxidases are involved in breaking down hydrogen peroxide and can oxidize organic compounds during this process. Both heme-containing enzymes utilize active FeIVO intermediates to oxidize reactants. By incorporating these enzymes in stable thin films on electrodes, Cyt P450s and peroxidases can accept electrons from an electrode, albeit by different mechanisms, and catalyze organic transformations in a feasible and cost-effective way. This is an advantageous approach, often called bioelectrocatalysis, compared to their biological pathways in solution that require expensive biochemical reductants such as NADPH or additional enzymes to recycle NADPH for Cyt P450s. Bioelectrocatalysis also serves as an ex situ platform to investigate metabolism of drugs and bio-relevant chemicals. In this paper we review biocatalytic electrochemical reactions using Cyt P450s including C-H activation, S-oxidation, epoxidation, N-hydroxylation, and oxidative N-, and O-dealkylation; as well as reactions catalyzed by peroxidases including synthetically important oxidations of organic compounds. Design aspects of these bioelectrocatalytic reactions are presented and discussed, including enzyme film formation on electrodes, temperature, pH, solvents, and activation of the enzymes. Finally, we discuss challenges and future perspective of these two important bioelectrocatalytic systems.
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Affiliation(s)
- Neeraj Kumar
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA
| | - James F Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA
- Department of Surgery and Neag Cancer Center, Uconn Health, Farmington, CT 06030, USA
- School of Chemistry, National University of Ireland at Galway, Galway, Ireland
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9
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Hansberg W. Monofunctional Heme-Catalases. Antioxidants (Basel) 2022; 11:2173. [PMID: 36358546 PMCID: PMC9687031 DOI: 10.3390/antiox11112173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 09/17/2023] Open
Abstract
The review focuses on four issues that are critical for the understanding of monofunctional catalases. How hydrogen peroxide (H2O2) reaches the active site and outcompetes water molecules to be able to function at a very high rate is one of the issues examined. Part of the answer is a gate valve system that is instrumental to drive out solvent molecules from the final section of the main channel. A second issue relates to how the enzyme deals with an unproductive reactive compound I (Cpd I) intermediate. Peroxidatic two and one electron donors and the transfer of electrons to the active site from NADPH and other compounds are reviewed. The new ascribed catalase reactions are revised, indicating possible measurement pitfalls. A third issue concerns the heme b to heme d oxidation, why this reaction occurs only in some large-size subunit catalases (LSCs), and the possible role of singlet oxygen in this and other modifications. The formation of a covalent bond between the proximal tyrosine with the vicinal residue is analyzed. The last issue refers to the origin and function of the additional C-terminal domain (TD) of LSCs. The TD has a molecular chaperone activity that is traced to a gene fusion between a Hsp31-type chaperone and a small-size subunit catalase (SSC).
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Affiliation(s)
- Wilhelm Hansberg
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Mexico City 04510, Mexico
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Lee JHZ, Podgorski MN, Moir M, Gee AR, Bell SG. Selective Oxidations Using a Cytochrome P450 Enzyme Variant Driven with Surrogate Oxygen Donors and Light. Chemistry 2022; 28:e202201366. [PMID: 35712785 PMCID: PMC9541349 DOI: 10.1002/chem.202201366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Joel H. Z. Lee
- Department of Chemistry University of Adelaide Adelaide SA 5005 Australia
| | | | - Michael Moir
- National Deuteration Facility Australian Nuclear Science and Technology Organisation (ANSTO) Lucas Heights Sydney NSW 2232 Australia
| | - Alecia R. Gee
- Department of Chemistry University of Adelaide Adelaide SA 5005 Australia
| | - Stephen G. Bell
- Department of Chemistry University of Adelaide Adelaide SA 5005 Australia
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Ling P, Sun X, Chen N, Cheng S, Gao X, Gao F. Electrochemical biosensor based on singlet oxygen generated by molecular photosensitizers. Anal Chim Acta 2021; 1183:338970. [PMID: 34627523 DOI: 10.1016/j.aca.2021.338970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 11/27/2022]
Abstract
Here a sensing strategy with the integration of photosensitizer and electrochemical analysis was present. The photosensitizer, Zinc(II) tetraphenylporphyrin (ZnTCPP), was functionalized graphene oxide (GO) to form complex (ZnTCPP/GO) as the electrode material and generated singlet-oxygen (1O2) in the presence of air under light illumination. Due to the special electronic structure of 1O2, hydroquinone (HQ) could react with 1O2 to produce electrochemically-detectable products, benzoquinone (BQ). Meanwhile, the formed BQ could be reduced on the electrode, completing the redox cycling. The ZnTCPP/GO modified ITO electrode produces a stable and enhanced photocurrent signal under 420 nm irradiation in air-saturated buffer, compared with in N2-saturated buffer. On the other hand, l-glutathione (GSH) as a signalling molecule plays important role in physiological process, which was employed as model to investigated the sensing performance. Coupling with HQ oxidized by 1O2, a GSH sensor was constructed on the basis the redox cycling of HQ. A sensitive reduction of photocurrent is observed with the addition of GSH, due to the GSH could be oxidized by the generated 1O2 to form GSSG. The biosensor displayed good performance in a broad concentration range of 0-150 μM, with a lower detection limit of 1.3 μM at an S/N ratio of 3, and could be used in practical application. This work affords a platform for constructing the biosensor with 1O2 instead of enzyme via on/off light switching.
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Affiliation(s)
- Pinghua Ling
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China.
| | - Xinyu Sun
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China
| | - Nuo Chen
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China
| | - Shan Cheng
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China
| | - Xianping Gao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China
| | - Feng Gao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, PR China.
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12
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Ingenbosch KN, Quint S, Dyllick‐Brenzinger M, Wunschik DS, Kiebist J, Süss P, Liebelt U, Zuhse R, Menyes U, Scheibner K, Mayer C, Opwis K, Gutmann JS, Hoffmann‐Jacobsen K. Singlet-Oxygen Generation by Peroxidases and Peroxygenases for Chemoenzymatic Synthesis. Chembiochem 2021; 22:398-407. [PMID: 32798264 PMCID: PMC7891382 DOI: 10.1002/cbic.202000326] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/13/2020] [Indexed: 11/23/2022]
Abstract
Singlet oxygen is a reactive oxygen species undesired in living cells but a rare and valuable reagent in chemical synthesis. We present a fluorescence spectroscopic analysis of the singlet-oxygen formation activity of commercial peroxidases and novel peroxygenases. Singlet-oxygen sensor green (SOSG) is used as fluorogenic singlet oxygen trap. Establishing a kinetic model for the reaction cascade to the fluorescent SOSG endoperoxide permits a kinetic analysis of enzymatic singlet-oxygen formation. All peroxidases and peroxygenases show singlet-oxygen formation. No singlet oxygen activity could be found for any catalase under investigation. Substrate inhibition is observed for all reactive enzymes. The commercial dye-decolorizing peroxidase industrially used for dairy bleaching shows the highest singlet-oxygen activity and the lowest inhibition. This enzyme was immobilized on a textile carrier and successfully applied for a chemical synthesis. Here, ascaridole was synthesized via enzymatically produced singlet oxygen.
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Affiliation(s)
- Kim N. Ingenbosch
- Niederrhein University of Applied SciencesDepartment of Chemistry and Institute for Coatings and Surface ChemistryAdlerstrasse 3247798KrefeldGermany
- Deutsches Textilforschungszentrum Nord-West gGmbHAdlerstrasse 147798KrefeldGermany
- Institute of Physical Chemistry and CENIDE (Center for Nanointegration)University Duisburg–EssenUniversitätsstraße 545117EssenGermany
| | - Stephan Quint
- Chiracon GmbHIm Biotechnologiepark 914943LuckenwaldeGermany
| | | | - Dennis S. Wunschik
- Niederrhein University of Applied SciencesDepartment of Chemistry and Institute for Coatings and Surface ChemistryAdlerstrasse 3247798KrefeldGermany
- Deutsches Textilforschungszentrum Nord-West gGmbHAdlerstrasse 147798KrefeldGermany
- Institute of Physical Chemistry and CENIDE (Center for Nanointegration)University Duisburg–EssenUniversitätsstraße 545117EssenGermany
| | - Jan Kiebist
- Faculty of Environmental and Natural SciencesBrandenburg University of Technology Cottbus-SenftenbergGroßenhainer Strasse 5701968SenftenbergGermany
| | - Philipp Süss
- Enzymicals AGWalther-Rathenau-Str. 49a17489GreifswaldGermany
| | - Ute Liebelt
- Enzymicals AGWalther-Rathenau-Str. 49a17489GreifswaldGermany
- Present address: Leibniz Institute for Plasma Science and TechnologyFelix-Hausdorff-Strasse 217489GreifswaldGermany
| | - Ralf Zuhse
- Chiracon GmbHIm Biotechnologiepark 914943LuckenwaldeGermany
| | - Ulf Menyes
- Enzymicals AGWalther-Rathenau-Str. 49a17489GreifswaldGermany
| | - Katrin Scheibner
- Faculty of Environmental and Natural SciencesBrandenburg University of Technology Cottbus-SenftenbergGroßenhainer Strasse 5701968SenftenbergGermany
| | - Christian Mayer
- Institute of Physical Chemistry and CENIDE (Center for Nanointegration)University Duisburg–EssenUniversitätsstraße 545117EssenGermany
| | - Klaus Opwis
- Deutsches Textilforschungszentrum Nord-West gGmbHAdlerstrasse 147798KrefeldGermany
| | - Jochen S. Gutmann
- Deutsches Textilforschungszentrum Nord-West gGmbHAdlerstrasse 147798KrefeldGermany
- Institute of Physical Chemistry and CENIDE (Center for Nanointegration)University Duisburg–EssenUniversitätsstraße 545117EssenGermany
| | - Kerstin Hoffmann‐Jacobsen
- Niederrhein University of Applied SciencesDepartment of Chemistry and Institute for Coatings and Surface ChemistryAdlerstrasse 3247798KrefeldGermany
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