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Xiao Q, Cao H, Tu X, Pan C, Fang Y, Huang S. The influence of near-infrared carbon dots on the conformational variation and enzymatic activity of glucose oxidase: A multi-spectroscopic and biochemical study with molecular docking. Int J Biol Macromol 2024; 273:133198. [PMID: 38889829 DOI: 10.1016/j.ijbiomac.2024.133198] [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: 04/06/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
In recent years, the exceptional biocatalytic properties of glucose oxidase (GOx) have spurred the development of various GOx-functionalized nanocatalysts for cancer diagnosis and treatment. Carbon dots, renowned for their excellent biocompatibility and distinctive fluorescence properties, effectively incorporate GOx. Given the paramount importance of GOx's enzymatic activity in therapeutic efficacy, this study conducts a thorough exploration of the molecular-level binding dynamics between GOx and near-infrared carbon dots (NIR-CDs). Utilizing various spectrometric and molecular simulation techniques, we reveal that NIR-CDs form a ground-state complex with GOx primarily via hydrogen bonds and van der Waals forces, interacting directly with amino acid residues in GOx's active site. This binding leads to conformational change and reduces thermal stability of GOx, slightly inhibiting its enzymatic activity and demonstrating a competitive inhibition effect. In vitro experiments demonstrate that NIR-CDs attenuate the GOx's capacity to produce H2O2 in HeLa cells, mitigating enzyme-induced cytotoxicity and cellular damage. This comprehensive elucidation of the intricate binding mechanisms between NIR-CDs and GOx provides critical insights for the design of NIR-CD-based nanotherapeutic platforms to augment cancer therapy. Such advancements lay the groundwork for innovative and efficacious cancer treatment strategies.
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Affiliation(s)
- Qi Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Huishan Cao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Xincong Tu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Chunyan Pan
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Yi Fang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Shan Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China.
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2
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Pan X, Yu XZ, Qin P. Effects of two food colorants on catalase and trypsin: Binding evidences from experimental and computational analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122702. [PMID: 37054570 DOI: 10.1016/j.saa.2023.122702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/21/2023] [Accepted: 04/01/2023] [Indexed: 05/14/2023]
Abstract
Recently, growing concern has been paid to the toxicity of additives in food. The present study investigated the interaction of two commonly used food colorants, quinoline yellow (QY) and sunset yellow (SY), with catalase and trypsin under physiological conditions by fluorescence, isothermal titration calorimetry (ITC), ultraviolet-vis absorption, synchronous fluorescence techniques as well as molecular docking. Based on the fluorescence spectra and ITC data, both QY and SY could significantly quench the intrinsic fluorescence of catalase or trypsin spontaneously to form a moderate complex driven by different forces. Additionally, the thermodynamics results demonstrated QY bind more tightly to both catalase and trypsin than SY, suggesting QY poses more of a threat to two enzymes than SY. Furthermore, the binding of two colorants could not only lead to the conformational and microenvironmental alterations of both catalase and trypsin, but also inhibit the activity of two enzymes. This study provides an important reference for understanding the biological transportation of synthetic food colorants in vivo, and enhancing their risk assessment on food safety.
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Affiliation(s)
- Xingren Pan
- The Guangxi Key Laboratory of Theory & Technology for Environmental Pollution Control, College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, PR China; Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, School of Resource and Environmental Sciences, Linyi University, Shandong Province, Shuangling Road, Linyi 276005, PR China
| | - Xiao-Zhang Yu
- The Guangxi Key Laboratory of Theory & Technology for Environmental Pollution Control, College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, PR China.
| | - Pengfei Qin
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, School of Resource and Environmental Sciences, Linyi University, Shandong Province, Shuangling Road, Linyi 276005, PR China.
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Hashemizadeh M, Shiri F, Shahraki S, Razmara Z. A multidisciplinary study for investigating the interaction of an iron complex with bovine liver catalase. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ponkarpagam S, Vennila KN, Elango KP. Investigating binding of insecticide buprofezin to DNA by experimental and metadynamics simulation studies. J Biomol Struct Dyn 2022; 41:3476-3484. [PMID: 35285769 DOI: 10.1080/07391102.2022.2050949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Buprofezin (BUP) is an insecticide which belongs to the thiadiazine structural family and known to damage DNA in mice. Though its toxic effect on human is not known clearly, understanding the mechanism of interaction of BUP with DNA can prove useful when required. Multi-spectroscopic experiments such as UV-Vis, fluorescence, circular dichroism (CD) and 1H NMR coupled with viscosity measurements, urea effect and voltametric studies were performed to ascertain the mode of binding of BUP with calf thymus DNA (CT-DNA). Analysis of UV-Vis and fluorescence spectra indicated the formation of a complex between BUP and CT-DNA. Other experiments such as competitive binding assays with ethidium bromide (EB) and Hoechst 33258, viscosity measurements, effect of urea, CD, voltammetric studies and 1H NMR spectral analysis suggested that BUP intercalates into the base pairs of CT-DNA. All these results revealed that the binding mode of BUP with CT-DNA should be intercalation and the binding constant is in the order of 104 M-1. The ΔHo < 0 and ΔSo < 0 suggested that H-bonding or van der Waals force was the main binding force between BUP and CT-DNA. The proposed mode of binding of BUP with CT-DNA has been visualized using in silico molecular docking and metadynamics simulation studies, which showed that the phenyl ring of BUP binds to CT-DNA via π-π stacking interaction in addition to H-bond formation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- S Ponkarpagam
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram, India
| | - K N Vennila
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram, India
| | - Kuppanagounder P Elango
- Department of Chemistry, Gandhigram Rural Institute (Deemed to be University), Gandhigram, India
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The protective effect of natural phenolic compound on the functional and structural responses of inhibited catalase by a common azo food dye. Food Chem Toxicol 2021; 160:112801. [PMID: 34974130 DOI: 10.1016/j.fct.2021.112801] [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: 12/09/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 01/15/2023]
Abstract
In this research retrieval effects of natural yellow (NY) on the performance of carmoisine (CAR) inhibited bovine liver catalase (BLC) was studied using multispectral and theoretical methods. Kinetic studies showed that CAR inhibited BLC through competitive inhibition (IC50 value of 2.24 × 10-6 M) while the addition of NY recover the activity of CAR-BLC up to 82% in comparison with the control enzyme. Circular dichroism data revealed that NY can repair the structural changes of BLC, affected by CAR. Furthermore, an equilibrium dialysis study indicated that NY could reduce the stability of the CAR-catalase complex. The surface plasmon resonance (SPR) data analysis indicated a high affinity of NY to BLC compared to CAR and the binding of NY led to a decrease in the affinity of the enzyme to the inhibitor. On the other hand, fluorescence and molecular docking studies showed that the quenching mechanism of BLC by CAR occurs through a static quenching process, and van der Waals forces and hydrogen bonding play a crucial role in the binding of CAR to BLC. MLSD data demonstrated that NY could increase the binding energy of CAR-BLC complex from -7.72 kJ mol-1 to -5.9 kJ mol-1, leading to complex instability and catalase activity salvage.
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Metal Complexes or Chelators with ROS Regulation Capacity: Promising Candidates for Cancer Treatment. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010148. [PMID: 35011380 PMCID: PMC8746559 DOI: 10.3390/molecules27010148] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 12/25/2021] [Accepted: 12/26/2021] [Indexed: 12/20/2022]
Abstract
Reactive oxygen species (ROS) are rapidly eliminated and reproduced in organisms, and they always play important roles in various biological functions and abnormal pathological processes. Evaluated ROS have frequently been observed in various cancers to activate multiple pro-tumorigenic signaling pathways and induce the survival and proliferation of cancer cells. Hydrogen peroxide (H2O2) and superoxide anion (O2•-) are the most important redox signaling agents in cancer cells, the homeostasis of which is maintained by dozens of growth factors, cytokines, and antioxidant enzymes. Therefore, antioxidant enzymes tend to have higher activity levels to maintain the homeostasis of ROS in cancer cells. Effective intervention in the ROS homeostasis of cancer cells by chelating agents or metal complexes has already developed into an important anti-cancer strategy. We can inhibit the activity of antioxidant enzymes using chelators or metal complexes; on the other hand, we can also use metal complexes to directly regulate the level of ROS in cancer cells via mitochondria. In this review, metal complexes or chelators with ROS regulation capacity and with anti-cancer applications are collectively and comprehensively analyzed, which is beneficial for the development of the next generation of inorganic anti-cancer drugs based on ROS regulation. We expect that this review will provide a new perspective to develop novel inorganic reagents for killing cancer cells and, further, as candidates or clinical drugs.
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Razmara Z, Shahraki S, Eigner V, Dusek M. Sonochemical synthesis, crystal structure and catalase interaction of a new 2D coordination polymer based on isoniazid and oxalato bridges. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Investigation of kinetics and thermodynamics in the interaction process between two pyridine derived Schiff base complexes and catalase. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Das A, Sharma P, Frontera A, Barcelo-Oliver M, Verma AK, Ahmed RS, Hussain S, Bhattacharyya MK. Supramolecular assemblies involving biologically relevant antiparallel π-stacking and unconventional solvent driven structural topology in maleato and fumarato bridged Zn(ii) coordination polymers: antiproliferative evaluation and theoretical studies. NEW J CHEM 2021. [DOI: 10.1039/d1nj00619c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In vitro anticancer activities have been explored in solvent driven maleato and fumarato bridged Zn(ii) coordination polymers involving energetically significant antiparallel π-stacking and enclathrated guest MeOH/H2O moieties.
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Affiliation(s)
- Amal Das
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Pranay Sharma
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares)
- Spain
| | - Miquel Barcelo-Oliver
- Departament de Química
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares)
- Spain
| | - Akalesh K. Verma
- Department of Zoology
- Cell & Biochemical Technology Laboratory
- Cotton University
- Guwahati-781001
- India
| | - Ruksana Sultana Ahmed
- Department of Zoology
- Cell & Biochemical Technology Laboratory
- Cotton University
- Guwahati-781001
- India
| | - Sahid Hussain
- Department of Chemistry
- Indian Institute of Technology Patna
- Bihta, Patna-801103
- India
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Tokdemir Öztürk S, Aksu P, Turan N, Buldurun K, Tanış E, Çolak N. Preparation, spectral characterization, ESR measurements and DFT calculations of Schiff base copper(II) complex. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1842768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Perihan Aksu
- Institute of Nanotechnology, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Nevin Turan
- Department of Chemistry, Faculty of Arts and Sciences, Muş Alparslan University, Muş, Turkey
| | - Kenan Buldurun
- Department of Chemistry, Faculty of Arts and Sciences, Muş Alparslan University, Muş, Turkey
| | - Emine Tanış
- Department of Medical Services and Techniques, Vocational School of Health Services, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Naki Çolak
- Department of Chemistry, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
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Shiri F, Shahraki S, Bazzi-Alahri M. Assessing the in vitro and in silico interactions of two Palladium(II) dithiocarbamate complexes with human serum albumin. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Razmara Z, Shiri F, Shahraki S. Hydrothermal synthesis of a paramagnetic alkali supermolecule, its effect on catalase inhibitory by spectroscopic and theoretical investigation. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Dutta D, Sharma P, Frontera A, Gogoi A, Verma AK, Dutta D, Sarma B, Bhattacharyya MK. Oxalato bridged coordination polymer of manganese( iii) involving unconventional O⋯π-hole(nitrile) and antiparallel nitrile⋯nitrile contacts: antiproliferative evaluation and theoretical studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj03712e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Unconventional O⋯π-hole(nitrile) and antiparallel nitrile⋯nitrile contacts have been theoretically investigated for a Mn(iii) coordination polymer considering cytotoxicity, apoptosis, ROS generation, molecular docking and pharmacophore features.
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Affiliation(s)
- Debajit Dutta
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Pranay Sharma
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | - Anshuman Gogoi
- Department of Chemistry
- Cotton University
- Guwahati-781001
- India
| | - Akalesh K. Verma
- Department of Zoology
- Cell & Biochemical Technology Laboratory
- Cotton University
- Guwahati 781001
- India
| | - Diksha Dutta
- Department of Zoology
- Cell & Biochemical Technology Laboratory
- Cotton University
- Guwahati 781001
- India
| | - Bipul Sarma
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
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