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Jia X, Jiao L, Li R, Yan D, Hu L, Chen C, Li X, Zhai Y, Lu X. Inhibition effect of p-d orbital hybridized PtSn nanozymes for colorimetric sensor array of antioxidants. Biosens Bioelectron 2024; 261:116468. [PMID: 38852326 DOI: 10.1016/j.bios.2024.116468] [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: 04/08/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Rational design of peroxidase (POD)-like nanozymes with high activity and specificity still faces a great challenge. Besides, the investigations of nanozymes inhibitors commonly focus on inhibition efficiency, the interaction between nanozymes-involved catalytic reactions and inhibitors is rarely reported. In this work, we design a p-block metal Sn-doped Pt (p-d/PtSn) nanozymes with the selective enhancement of POD-like activity. The p-d orbital hybridization interaction between Pt and Sn can effectively optimize the electronic structure of PtSn nanozymes and thus selectively enhance POD-like activity. In addition, the antioxidants as nanozymes inhibitors can effectively inhibit the POD-like activity of p-d/PtSn nanozymes, which results in the fact that antioxidants absorbed on the p-d/PtSn surface can hinder the adsorption of hydrogen peroxide. The inhibition type (glutathione as a model molecule) is reversible mixed-inhibition with inhibition constants (Ki' and Ki) of 0.21 mM and 0.03 mM. Finally, based on the varying inhibition levels of antioxidant molecules, a colorimetric sensor array is constructed to distinguish and simultaneously detect five antioxidants. This work is expected to design highly active and specific nanozymes through p-d orbital hybrid engineering, and also provides insights into the interaction between nanozymes and inhibitors.
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Affiliation(s)
- Xiangkun Jia
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Lei Jiao
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China.
| | - Ruimin Li
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Dongbo Yan
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Lijun Hu
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Chengjie Chen
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Xiaotong Li
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Yanling Zhai
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China.
| | - Xiaoquan Lu
- Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, PR China.
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Shao W, Xing Z, Xu X, Ye D, Yan R, Ma T, Wang Y, Zeng Z, Yin B, Cheng C, Li S. Bioinspired Proton Pump on Ferroelectric HfO 2-Coupled Ir Catalysts with Bidirectional Hydrogen Spillover for pH-Universal and Superior Hydrogen Production. J Am Chem Soc 2024. [PMID: 39198263 DOI: 10.1021/jacs.4c08100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2024]
Abstract
The improvement of hydrogen evolution reaction kinetics can be largely accelerated by introducing a well-designed hydrogen spillover pathway into the catalysts. However, the driving force and mechanism of hydrogen migration on the surface of catalysts are poorly understood and are rarely explored in depth. Here, inspired by the specific ferroelectric property of HfO2, Mn-O-Ca sites in Mn4CaO5, and Fe-Fe sites in hydrogenases, we constructed a bioinspired HfO2 coupled with Ir catalysts (Ir/HfO2@C) with an alkaline hydrogen reverse spillover effect from HfO2 to interface and acid hydrogen spillover effect from Ir to interface. Benefiting from the bidirectional hydrogen spillover pathways controlled by pH, Ir/HfO2@C displays a narrow overpotential difference between acidic and alkaline electrolytes. Remarkably, Ir/HfO2@C shows a remarkable mass current density and turnover frequency value, far exceeding the benchmark Ir/C by 20.6 times. More importantly, this Ir/HfO2@C achieves extraordinarily low overpotentials of 146 and 39 mV at 10 mV cm-2 in seawater and alkaline seawater, respectively. The anion-exchange membrane water electrolyzer equipped with Ir/HfO2@C as a cathode exhibits excellent and stable H2-evolution performance on 2.22 V at 1.0 A cm-2. We expect that the bioinspired strategy will provide a new concept for designing catalytic materials for efficient and pH-universal electrochemical hydrogen production.
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Affiliation(s)
- Wenjie Shao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhenyu Xing
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaohui Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Daoping Ye
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Yan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Tian Ma
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Wang
- Center for Microscopy and Analysis, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, and State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Bo Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shuang Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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3
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Medina D, Omanakuttan B, Nguyen R, Alwarsh E, Walgama C. Electrochemical Probing of Human Liver Subcellular S9 Fractions for Drug Metabolite Synthesis. Metabolites 2024; 14:429. [PMID: 39195525 DOI: 10.3390/metabo14080429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 07/24/2024] [Accepted: 07/30/2024] [Indexed: 08/29/2024] Open
Abstract
Human liver subcellular fractions, including liver microsomes (HLM), liver cytosol fractions, and S9 fractions, are extensively utilized in in vitro assays to predict liver metabolism. The S9 fractions are supernatants of human liver homogenates that contain both microsomes and cytosol, which include most cytochrome P450 (CYP) enzymes and soluble phase II enzymes such as glucuronosyltransferases and sulfotransferases. This study reports on the direct electrochemistry and biocatalytic features of redox-active enzymes in S9 fractions for the first time. We investigated the electrochemical properties of S9 films by immobilizing them onto a high-purity graphite (HPG) electrode and performing cyclic voltammetry under anaerobic (Ar-saturated) and aerobic (O2-saturated) conditions. The heterogeneous electron transfer rate between the S9 film and the HPG electrode was found to be 14 ± 3 s-1, with a formal potential of -0.451 V vs. Ag/AgCl reference electrode, which confirmed the electrochemical activation of the FAD/FMN cofactor containing CYP450-reductase (CPR) as the electron receiver from the electrode. The S9 films have also demonstrated catalytic oxygen reduction under aerobic conditions, identical to HLM films attached to similar electrodes. Additionally, we investigated CYP activity in the S9 biofilm for phase I metabolism using diclofenac hydroxylation as a probe reaction and identified metabolic products using liquid chromatography-mass spectrometry (LC-MS). Investigating the feasibility of utilizing liver S9 fractions in such electrochemical assays offers significant advantages for pharmacological and toxicological evaluations of new drugs in development while providing valuable insights for the development of efficient biosensor and bioreactor platforms.
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Affiliation(s)
- Daphne Medina
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA
| | - Bhavana Omanakuttan
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA
| | - Ricky Nguyen
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA
| | - Eman Alwarsh
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA
| | - Charuksha Walgama
- Department of Physical & Applied Sciences, University of Houston-Clear Lake, 2700 Bay Area Boulevard, Houston, TX 77058, USA
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Wang H, Abe I. Recent developments in the enzymatic modifications of steroid scaffolds. Org Biomol Chem 2024; 22:3559-3583. [PMID: 38639195 DOI: 10.1039/d4ob00327f] [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: 04/20/2024]
Abstract
Steroids are an important family of bioactive compounds. Steroid drugs are renowned for their multifaceted pharmacological activities and are the second-largest category in the global pharmaceutical market. Recent developments in biocatalysis and biosynthesis have led to the increased use of enzymes to enhance the selectivity, efficiency, and sustainability for diverse modifications of steroids. This review discusses the advancements achieved over the past five years in the enzymatic modifications of steroid scaffolds, focusing on enzymatic hydroxylation, reduction, dehydrogenation, cascade reactions, and other modifications for future research on the synthesis of novel steroid compounds and related drugs, and new therapeutic possibilities.
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Affiliation(s)
- Huibin Wang
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
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Kuzikov AV, Masamrekh RA, Filippova TA, Tumilovich AM, Strushkevich NV, Gilep AA, Khudoklinova YY, Shumyantseva VV. Bielectrode Strategy for Determination of CYP2E1 Catalytic Activity: Electrodes with Bactosomes and Voltammetric Determination of 6-Hydroxychlorzoxazone. Biomedicines 2024; 12:152. [PMID: 38255257 PMCID: PMC10812958 DOI: 10.3390/biomedicines12010152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/26/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
We describe a bielectrode system for evaluation of the electrocatalytic activity of cytochrome P450 2E1 (CYP2E1) towards chlorzoxazone. One electrode of the system was employed to immobilize Bactosomes with human CYP2E1, cytochrome P450 reductase (CPR), and cytochrome b5 (cyt b5). The second electrode was used to quantify CYP2E1-produced 6-hydroxychlorzoxazone by its direct electrochemical oxidation, registered using square-wave voltammetry. Using this system, we determined the steady-state kinetic parameters of chlorzoxazone hydroxylation by CYP2E1 of Bactosomes immobilized on the electrode: the maximal reaction rate (Vmax) was 1.64 ± 0.08 min-1, and the Michaelis constant (KM) was 78 ± 9 μM. We studied the electrochemical characteristics of immobilized Bactosomes and have revealed that electron transfer from the electrode occurs both to the flavin prosthetic groups of CPR and the heme iron ions of CYP2E1 and cyt b5. Additionally, it has been demonstrated that CPR has the capacity to activate CYP2E1 electrocatalytic activity towards chlorzoxazone, likely through intermolecular electron transfer from the electrochemically reduced form of CPR to the CYP2E1 heme iron ion.
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Affiliation(s)
- Alexey V. Kuzikov
- Institute of Biomedical Chemistry, 10, Pogodinskaya Street, 119121 Moscow, Russia; (R.A.M.); (T.A.F.); (A.A.G.); (V.V.S.)
- Department of Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, 1, Ostrovityanova Street, 117997 Moscow, Russia;
| | - Rami A. Masamrekh
- Institute of Biomedical Chemistry, 10, Pogodinskaya Street, 119121 Moscow, Russia; (R.A.M.); (T.A.F.); (A.A.G.); (V.V.S.)
- Department of Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, 1, Ostrovityanova Street, 117997 Moscow, Russia;
| | - Tatiana A. Filippova
- Institute of Biomedical Chemistry, 10, Pogodinskaya Street, 119121 Moscow, Russia; (R.A.M.); (T.A.F.); (A.A.G.); (V.V.S.)
- Department of Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, 1, Ostrovityanova Street, 117997 Moscow, Russia;
| | - Anastasiya M. Tumilovich
- Institute of Bioorganic Chemistry NASB, 5 Building 2, V.F. Kuprevich Street, 220084 Minsk, Belarus; (A.M.T.); (N.V.S.)
| | - Natallia V. Strushkevich
- Institute of Bioorganic Chemistry NASB, 5 Building 2, V.F. Kuprevich Street, 220084 Minsk, Belarus; (A.M.T.); (N.V.S.)
| | - Andrei A. Gilep
- Institute of Biomedical Chemistry, 10, Pogodinskaya Street, 119121 Moscow, Russia; (R.A.M.); (T.A.F.); (A.A.G.); (V.V.S.)
- Institute of Bioorganic Chemistry NASB, 5 Building 2, V.F. Kuprevich Street, 220084 Minsk, Belarus; (A.M.T.); (N.V.S.)
| | - Yulia Yu. Khudoklinova
- Department of Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, 1, Ostrovityanova Street, 117997 Moscow, Russia;
| | - Victoria V. Shumyantseva
- Institute of Biomedical Chemistry, 10, Pogodinskaya Street, 119121 Moscow, Russia; (R.A.M.); (T.A.F.); (A.A.G.); (V.V.S.)
- Department of Biochemistry, Faculty of Biomedicine, Pirogov Russian National Research Medical University, 1, Ostrovityanova Street, 117997 Moscow, Russia;
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January JL, Tshobeni ZZ, Ngema NPP, Jijana AN, Iwuoha EI, Mulaudzi T, Douman SF, Ajayi RF. Novel Cytochrome P450-3A4 Enzymatic Nanobiosensor for Lapatinib (a Breast Cancer Drug) Developed on a Poly(anilino-co-4-aminobenzoic Acid-Green-Synthesised Indium Nanoparticle) Platform. BIOSENSORS 2023; 13:897. [PMID: 37754131 PMCID: PMC10527071 DOI: 10.3390/bios13090897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023]
Abstract
Breast cancer (BC) is one of the most common types of cancer disease worldwide and it accounts for thousands of deaths annually. Lapatinib is among the preferred drugs for the treatment of breast cancer. Possible drug toxicity effects of lapatinib can be controlled by real-time determination of the appropriate dose for a patient at the point of care. In this study, a novel highly sensitive polymeric nanobiosensor for lapatinib is presented. A composite of poly(anilino-co-4-aminobenzoic acid) co-polymer {poly(ANI-co-4-ABA)} and coffee extract-based green-synthesized indium nanoparticles (InNPs) was used to develop the sensor platform on a screen-printed carbon electrode (SPCE), i.e., SPCE||poly(ANI-co-4-ABA-InNPs). Cytochrome P450-3A4 (CYP3A4) enzyme and polyethylene glycol (PEG) were incorporated on the modified platform to produce the SPCE||poly(ANI-co-4-ABA-InNPs)|CYP3A4|PEG lapatinib nanobiosensor. Experiments for the determination of the electrochemical response characteristics of the nanobiosensor were performed with cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The nanobiosensor calibration for 0-100 ng/mL lapatinib was linear and gave limit of detection (LOD) values of 13.21 ng/mL lapatinib and 18.6 ng/mL lapatinib in physiological buffer and human serum, respectively. The LOD values are much lower than the peak plasma concentration (Cmax) of lapatinib (2.43 µg/mL), which is attained 4 h after the administration of a daily dose of 1250 mg lapatinib. The electrochemical nanobiosensor also exhibited excellent anti-interference performance and stability.
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Affiliation(s)
- Jaymi Leigh January
- SensorLab (UWC Sensor Laboratories), University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
| | - Ziyanda Zamaswazi Tshobeni
- SensorLab (UWC Sensor Laboratories), University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
| | - Nokwanda Precious Pearl Ngema
- SensorLab (UWC Sensor Laboratories), University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
| | - Abongile Nwabisa Jijana
- Nanotechnology Innovation Centre, Advanced Materials Division, Mintek, Private Bag X3015, Randburg, Johannesburg 2125, South Africa
| | - Emmanuel Iheanyichukwu Iwuoha
- SensorLab (UWC Sensor Laboratories), University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
| | - Takalani Mulaudzi
- Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
| | - Samantha Fiona Douman
- Department of Chemistry, University of Cape Town, Private Bag X3, Rondebosch, Cape Town 7701, South Africa
| | - Rachel Fanelwa Ajayi
- SensorLab (UWC Sensor Laboratories), University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa
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