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Zhao W, Zhang M, Zhang L, Deng X, Wang Y, Chen Y, Weng S. Carbon Dots with Antioxidant Capacity for Detecting Glucose by Fluorescence and Repairing High-Glucose Damaged Glial Cells. J Fluoresc 2024:10.1007/s10895-024-03599-8. [PMID: 38300482 DOI: 10.1007/s10895-024-03599-8] [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: 12/05/2023] [Accepted: 01/23/2024] [Indexed: 02/02/2024]
Abstract
Diabetic mellitus management extends beyond blood glucose monitoring to the essential task of mitigating the overexpression of reactive oxygen species (ROS), particularly vital for cellular repair, especially within the nervous system. Herein, antioxidant carbon dots (Arg-CDs) were designed and prepared using anhydrous citric acid, L-arginine, and ethylenediamine as sources through a hydrothermal method. Arg-CDs exhibited excellent scavenging ability to 2,2-Diphenyl-1-picrylhydrazyl (DPPH∙), and fluorescence response to hydroxyl radicals (∙OH), a characteristic representative of reactive oxygen species (ROS). Assisted by glucose oxidase and Fe2+, Arg-CDs showed a sensitive and selective response to glucose. The quenching mechanism of Arg-CDs by formed ∙OH was based on the static quenching effect (SQE). The analytical performance of this method for glucose detection encompassed a wide linear range (0.3-15 μM), a low practical limit of detection (0.1 μM) and practical applicability for blood glucose monitoring. In an in vitro model employing glial cells (BV2 cells), it was observed that high glucose medium led to notable cellular damage ascribed to the excessive ROS production from hyperglycemia. The diminished and apoptotic glial cells were gradually recovered by adding increased contents of Arg-CDs. This work illustrates a promising area that designs effective carbon dots with antioxidant capacity for the dual applications of detection and cell repairing based on the utilization of antioxidant activity.
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Affiliation(s)
- Wenlong Zhao
- Department of Neurology, Institute of Neurology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China
| | - Menghan Zhang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Liang Zhang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
- Department of Pharmacy, Fujian Provincial Geriatric Hospital, Teaching Hospital of Fujian Medical University, Fuzhou, 350003, China
| | - Xiaoqin Deng
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Yao Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Yiping Chen
- Department of Interventional Radiology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China.
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
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Liu K, Guo Y, Yu H, Cheng Y, Xie Y, Yao W. Sulfhydryl-functionalized carbon dots as effective probes for fluorescence enhancement detection of patulin. Food Chem 2023; 420:136037. [PMID: 37075572 DOI: 10.1016/j.foodchem.2023.136037] [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: 11/20/2022] [Revised: 03/14/2023] [Accepted: 03/23/2023] [Indexed: 04/21/2023]
Abstract
In this study, sulfydryl-functionalized nitrogen-doped carbon dots (SH-NCDs) was synthesized by amide reaction of hydrothermally synthesized carbon dots with l-cysteine and used to detect patulin selectively. The SH-NCDs exhibited excitation wavelength-independent fluorescence in the range 300-360 nm. The modified sulfhydryl group (-SH) on the surface of NCDs served as a specific recognition site to capture patulin. The addition reaction between patulin and the -SH on the SH-NCDs surface resulted in enhanced fluorescence. SH-NCDs was used as a fluorescent probe for label-free detection of patulin, showing excellent sensitivity in the linear range of 0.1-400 ng mL-1, with detection limits as low as 0.053 ng mL-1. The fluorescent probe has specific selectivity for patulin. The recoveries of patulin in apple juice and grape juice were 88.9 %-99.2 % and 92.5 %-101.8 %, respectively. These results showed that the sensor designed in this experiment selectively detected the target patulin from complex food systems.
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Affiliation(s)
- Kunfeng Liu
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yahui Guo
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Hang Yu
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yuliang Cheng
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yunfei Xie
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Weirong Yao
- School of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800, Lihu Road, Binhu Avenue, Wuxi 214122, Jiangsu Province, China.
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Drozd DD, Byzova NA, Pidenko PS, Tsyupka DV, Strokin PD, Goryacheva OA, Zherdev AV, Goryacheva IY, Dzantiev BB. Luminescent alloyed quantum dots for turn-off enzyme-based assay. Anal Bioanal Chem 2022; 414:4471-4480. [PMID: 35359179 DOI: 10.1007/s00216-022-04016-4] [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: 02/16/2022] [Accepted: 03/11/2022] [Indexed: 11/01/2022]
Abstract
A new bioanalytical labeling system based on alloyed quantum dots' (QDs) photoluminescence quenching caused by an enzymatic reaction has been developed and tested for the first time. The catalytic role of the enzyme provides high sensitivity and the possibility of varying detecting time to improve assay sensitivity. Alloyed luminescent QDs were chosen in view of their small size (5-7 nm) and the high sensitivity of their optical properties to physicochemical interactions. Here, we described the synthesis of alloyed luminescent QDs and demonstrated the possibility of using them as a luminescent turn-off substrate for enzymatic assay. Synthesized alloyed QDs were found to be a sensitive turn-off substrate for glucose oxidase in homogeneous and heterogeneous assay models. CdZnSeS and CdZnSeS/ZnS QDs covered with dihydrolipoic acid and 2-mercaptoethanol were tested. A glucose oxidase limit of detection of 6.6 nM for the heterogenous high-throughput model assay was reached.
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Affiliation(s)
- Daniil D Drozd
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Nadezhda A Byzova
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, 119071, Moscow, Russia
| | - Pavel S Pidenko
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia
| | - Daria V Tsyupka
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia
| | - Pavel D Strokin
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia
| | - Olga A Goryacheva
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, 119071, Moscow, Russia
| | - Irina Yu Goryacheva
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, 119071, Moscow, Russia
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Zhou Y, Wu YJ, Wang L, Han J, Wu JC, Li CM, Wang Y. Natural deep eutectic solvents as green and biocompatible reaction medium for carbonic anhydrase catalysis. Int J Biol Macromol 2021; 190:206-213. [PMID: 34492243 DOI: 10.1016/j.ijbiomac.2021.08.221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 08/24/2021] [Accepted: 08/31/2021] [Indexed: 11/28/2022]
Abstract
Easy deactivation of free enzymes under non-native condition has become a stumbling block to the industrial application of biocatalysis. Natural deep eutectic solvent (NADES) has been exploited as a novel reaction medium for improving enzyme stability. The present work focused on preserving and enhancing the activity of carbonic anhydrase (CA) in a more economical and biocompatible NADES system. We synthesized six choline chloride/betaine-based NADES and analyzed the effects of compositions and concentrations of NADES on their physicochemical properties. The Bet-Gly (1: 2) NADES (55%) was proved to be more suitable as reaction medium for CA by analyzing enzyme activity in the presence of NADES. The enhancement in the stability of CA was found to be as a result of a three-dimensional hydrogen bonding network, rather than the individual or the synergistic effect of betaine and glyceride. The conformational change of CA to become more compact was confirmed both by fluorescence spectrum analysis and circular dichroism analysis. It is worth mentioning that a remarkable thermal stability was maintained when CA was incubated at temperature below 60 °C, and about 96% of activity was still restored in 55% NADES at 60 °C for 12 h.
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Affiliation(s)
- Yang Zhou
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Ya-Jiao Wu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Jia-Cong Wu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Chun-Mei Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
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