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Niu M, Liang X, Zhao H, Li H, Fu X, Liu C. Bipolar hemicyanine cationic probe for simultaneous sensing of ATP and GTP. Spectrochim Acta A Mol Biomol Spectrosc 2023; 303:123249. [PMID: 37579665 DOI: 10.1016/j.saa.2023.123249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/19/2023] [Accepted: 08/08/2023] [Indexed: 08/16/2023]
Abstract
Adenosine 5'-triphosphate (ATP) and guanosine 5'-triphosphate (GTP) are the most essential energy source in enormous biological processes. Various probes for ATP or GTP sensing, have been widely established, but the probe that could simultaneously monitor ATP and GTP is still rarely reported. Herein, we report a bipolar hemicyanine cationic probe for simultaneous sensing of ATP and GTP via a one-step monitoring process. This probe exhibited strong affinity to ATP and GTP through intramolecular electrostatic and π-π stacking interactions, which the binding constant on each step were determined as 6.15 × 107 M-1 and 1.57 × 106 M-1 for ATP, 3.19 × 107 M-1 and 3.81 × 106 M-1 for GTP. The sensitivity and specificity of this probe toward ATP or GTP over other twelve biological analogues (adenosine 5'-diphosphate (ADP), adenosine 5'-monophosphate (AMP), guanosine 5'-diphosphate (GDP), guanosine 5'-monophosphate (GMP), Etc.) have also been successfully demonstrated. Furthermore, due to the rapid response rate (within 10 s), we also proved that this probe could be employed as a monitor tool during the ATP or GTP-related enzymatic reaction process.
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Affiliation(s)
- Mengxing Niu
- School of Applied Engineering, Henan University of Science and Technology, Sanmenxia 472000, PR China
| | - Xiaofei Liang
- School of Music, Henan University, Kaifeng 475001, PR China
| | - Haotian Zhao
- Department of Physical Education, Jiangnan University, Wuxi 214122, PR China
| | - Huixin Li
- School of Sport Science, Beijing Sport University, Beijing 100084, PR China
| | - Xuancheng Fu
- Department of Chemistry, Syracuse University, Syracuse 13244, United States.
| | - Chang Liu
- School of Sport Science, Beijing Sport University, Beijing 100084, PR China.
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Sudhan N, Anitta S, Meenakshi S, Sekar C. Brushite nanoparticles based electrochemical sensor for detection of uric acid, xanthine, hypoxanthine and caffeine. Anal Biochem 2022; 659:114947. [PMID: 36216144 DOI: 10.1016/j.ab.2022.114947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 12/14/2022]
Abstract
The research in the field of biosensors has recently been focused on the design and development of functional electrode materials that can respond to changes in their biochemical environment. Here, we report the synthesis of dicalcium phosphate dihydrate (DCPD), also known as brushite (CaHPO4·2H2O) by soft chemical method and its application for electrochemical sensing of four different analytes. Phase purity, structure, chemical composition and surface morphology of the synthesized nanoparticles have been investigated using powder XRD, FTIR, SEM, XPS and HRTEM methods. Electrochemical sensor was prepared by modifying GCE with brushite and the modified electrodes were successfully used for either independent or simultaneous determination of uric acid, xanthine, hypoxanthine and caffeine in their mixture. The brushite/GCE exhibited four strong well-defined separate peaks corresponding to the oxidation of UA, XN, HXN and CF in phosphate buffer saline (PBS) at pH 7.4. The fabricated electrode showed low detection limits (S/N = 3) of 0.576, 1.0, 0.076 and 1.26 μM for UA, XN, HXN and CF respectively. Practical application of the fabricated electrode has been demonstrated by determining UA, XN, HXN and CF in human urine and coffee samples by direct method. The brushite offers scope for fabrication of sensor systems for implantable medical applications.
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Affiliation(s)
- N Sudhan
- Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630 004, Tamilnadu, India; Department of Chemistry, Thiagarajar College, Madurai, 625009, Tamilnadu, India
| | - S Anitta
- Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630 004, Tamilnadu, India
| | - S Meenakshi
- Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630 004, Tamilnadu, India
| | - C Sekar
- Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630 004, Tamilnadu, India.
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Hu L, Yin L, Wang F, Yu D, Wang C, Hui M, Chu L, Zhu X, Yan Z. Molecular spectra of a D-π-A typed polydentate ligand chromophore and its simultaneous response to trace Cu 2+ and Co 2. Spectrochim Acta A Mol Biomol Spectrosc 2019; 220:117130. [PMID: 31136860 DOI: 10.1016/j.saa.2019.05.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/12/2019] [Accepted: 05/12/2019] [Indexed: 06/09/2023]
Abstract
A D-π-A conjugated polydentate ligand chromophore, N-8'-quinolyl-2,4,6- trihydroxyl benzamide (NQTB), was identified and synthesized using tri-hydroxyl phenol as donated-electron group, N-heterocycle quinoline as accepted-electron one and CN bond as bridged one. It was expected to chelate some heavy metal ions with prominent colorimetric or spectral changes. After its UV-vis absorption spectrum was investigated in detail, it was noted that NQTB possessed excellent spectral recognition ability to Cu2+ and Co2+ from other coexisting ions in aqueous. Under the optimized conditions, NQTB could simultaneously discriminate trace Cu2+ and Co2+ in environmental aqueous samples with low detection limits (1.9 × 10-8 mol/L and 5.7 × 10-8 mol/L) and satisfying analytical precisions (R.S.D. ≤3.3% and ≤2.6%) respectively. The sensing mechanism was confirmed to form some stable 5-membered-co-6-membered condensed rings between Cu2+/Co2+ and O/N atoms in NQTB.
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Affiliation(s)
- Lei Hu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Liwen Yin
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Fang Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Dehua Yu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Chenshu Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Mingwei Hui
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Luyao Chu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xiao Zhu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China.
| | - Zhengquan Yan
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China; Fujian Provincial Key Laboratory for Soft Functional Materials Research & School of Material Science and Engineering, Xiamen University, Xiamen 237012, China.
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Santos AM, Wong A, Vicentini FC, Fatibello-Filho O. Simultaneous voltammetric sensing of levodopa, piroxicam, ofloxacin and methocarbamol using a carbon paste electrode modified with graphite oxide and β-cyclodextrin. Mikrochim Acta 2019; 186:174. [PMID: 30771008 DOI: 10.1007/s00604-019-3296-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 02/02/2019] [Indexed: 01/19/2023]
Abstract
A carbon paste electrode (CPE) was modified with graphite oxide (GrO) and β-cyclodextrin (CD) to obtain a sensor for simultaneous voltammetric determination of levodopa (LD), piroxicam (PRX), ofloxacin (OFX) and methocarbamol (MCB). The morphology, structure and electrochemical properties of the functionalized GrO were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, contact angle measurements and cyclic voltammetry. Under the optimal experimental conditions, the sensor is capable of detecting LD, PRX, OFX and MCB by square wave voltammetry (SWV) at working potentials of +0.40, +0.60, +1.03 and + 1.27 V (versus Ag/AgCl), respectively. Response is linear from 1.0 to 20 μM for LD, from 1.0 to 15 μM for PRX, from 1.0 to 20 μM for OFX, and from 1.0 to 50 μM for MCB. The respective limits of detection are 65, 105, 89 and 400 nM. The method was successfully applied to the simultaneous determination of LD, PRX, OFX and MCB in (spiked) real river water and synthetic urine samples, and the results were in agreement with those obtained using a spectrophotometric method, with recoveries close to 100%. Graphical abstract Schematic presentation of a novel electroanalytical method employing a carbon paste electrode modified with graphite oxide and β-cyclodextrin for the simultaneous determination of levodopa, piroxicam, ofloxacin and methocarbamol in urine and river water samples by square wave voltammetry.
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Wong A, Santos AM, Silva TA, Fatibello-Filho O. Simultaneous determination of isoproterenol, acetaminophen, folic acid, propranolol and caffeine using a sensor platform based on carbon black, graphene oxide, copper nanoparticles and PEDOT:PSS. Talanta 2018; 183:329-38. [PMID: 29567183 DOI: 10.1016/j.talanta.2018.02.066] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 01/08/2023]
Abstract
We explored the use of carbon black (CB), graphene oxide (GO), copper nanoparticles (CuNPs) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) as electrode materials for the simultaneous determination of isoproterenol, acetaminophen, folic acid, propranolol and caffeine. The designed nanostructured surface was widely characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), contact angle measurements and electrochemistry. From electrochemical characterization assays carried out towards the potassium ferricyanide redox probe, fast electron transfer kinetics and a considerably higher electroactive surface area were observed for the modified electrodic surface based on CB, GO, CuNPs and PEDOT:PSS film. Using square-wave voltammetry (SWV), well defined and resolved anodic peaks were detected for isoproterenol, acetaminophen, folic acid, propranolol and caffeine, with peak-to-peak potential separation not less than 170 mV. Then, the SWV technique was explored for the simultaneous determination of quinary mixtures of these analytes, resulting in analytical curves with linear ranges and limits of detection at micromolar concentration levels. The practical viability of the proposed voltammetric sensor was illustrated in the analysis of human body fluid samples. The proposed sensor showed good repeatability and a successful application using urine and serum matrices, with recoveries close to 100%.
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