1
|
Zhao H, Li K, Zou Y, Wang Y, Zhong Z, Xi Y, Xiao X. Enhanced peroxidase-like activity of Cu-Cu 2O composite film through PtPd immobilization for colorimetric glucose detection. Talanta 2024; 273:125964. [PMID: 38521022 DOI: 10.1016/j.talanta.2024.125964] [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: 12/22/2023] [Revised: 03/09/2024] [Accepted: 03/20/2024] [Indexed: 03/25/2024]
Abstract
In this study, Cu-Cu2O/PtPd nanocomposites were synthesized and characterized for their peroxidase-like enzyme activity. X-ray diffraction and energy dispersive X-ray spectroscopy analyses confirmed the successful synthesis of the nanocomposites, which exhibited a flower-like morphology and a more uniform dispersion than Cu-Cu2O. The catalytic activity of Cu-Cu2O/PtPd was evaluated using the chromogenic substrate 3,3',5,5'-tetramethylbenzidine (TMB), finding that Cu-Cu2O/PtPd outperformed Cu-Cu2O. The optimal temperature and pH for the catalytic activity of Cu-Cu2O/PtPd were determined to be 40 °C and pH 4.0, respectively. A kinetic analysis revealed that Cu-Cu2O/PtPd followed Michaelis-Menten kinetics and exhibited a higher affinity toward TMB than the horseradish peroxidase enzyme. The catalytic mechanism of Cu-Cu2O/PtPd involved the generation of hydroxyl radicals, which facilitated the oxidation of TMB. Furthermore, the Cu-Cu2O/PtPd nanocomposite was successfully applied for the colorimetric detection of glucose, demonstrating a linear range of 8-90 μM, a detection limit of 2.389 μM, and high selectivity for glucose over other sugars.
Collapse
Affiliation(s)
- Hong Zhao
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China.
| | - Kui Li
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| | - Yiming Zou
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| | - Yaoting Wang
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| | - Zimei Zhong
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| | - Yu Xi
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| | - Xin Xiao
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222005, China
| |
Collapse
|
2
|
Gou GH, Liu L, Abdubakiev S, Xin XL, Akber Aisa H, Li J. Anti-Diabetic Effects and Molecular Mechanisms of Amide Alkaloids from Piper longum Based on Network Pharmacology Integrated with Cellular Assays. Chem Biodivers 2023; 20:e202200904. [PMID: 36469428 DOI: 10.1002/cbdv.202200904] [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: 09/24/2022] [Revised: 12/05/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
Piper longum is a well-known spice and traditional medicine. It was revealed to possess anti-diabetic activity, but few information about its active component and underlying mechanism could be available. In this study, retrofractamides A (1) and C (2) isolated from P. longum showed potent inhibitory activity against PTP1B. Therefore, the potential mechanism was predicted by network pharmacology and molecular docking. PI3K/AKT was obtained as the most remarkable pathway against type 2 diabetes mellitus (T2DM), and AKT1 and GSK3β were yielded as the top two core targets of retrofractamides A (1) and C (2). Molecular docking of compounds with AKT1 and GSK3β showed strong binding affinity between them. Additionally, cellular experiments with a L6 cell model was conducted to further verify the above predictions. Results indicated that retrofractamides A (1) and C (2) exerted anti-diabetic effect via activating PI3K/AKT pathway, and they promoted glucose consumption, glucose uptake, glycogen synthesis and glycolysis.
Collapse
Affiliation(s)
- Guang-Hui Gou
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
| | - Liu Liu
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
| | - Sardorbek Abdubakiev
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
| | - Xue-Lei Xin
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
| | - Haji Akber Aisa
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
| | - Jun Li
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization and Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi 830011, Xinjiang, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
| |
Collapse
|
3
|
Yang L, Cao J, Wei J, Deng J, Hou X, Hao E, Du Z, Zou L, Li P. Antiproliferative activity of berberine in HepG2 cells via inducing apoptosis and arresting cell cycle. Food Funct 2021; 12:12115-12126. [PMID: 34787617 DOI: 10.1039/d1fo02783b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The therapeutic targets of berberine for hepatocellular carcinoma (HCC) and its detailed mechanisms remain unexplored. Here, an integration of network pharmacology, proteomic, bioinformatic and in vitro biochemical approach was proposed to reveal therapeutic targets and pathways underlying the antiproliferative activity of berberine against HepG2 cells. Results indicated that berberine caused the cytotoxicity and inhibited the growth of HepG2 cells with IC50 values ranging from 92 μM to 118 μM. Network pharmacology analysis revealed that targeting apoptosis and cell cycle pathways by berberine contributed to its antitumor efficacy against HCC. Proteomic analysis demonstrated that mitochondria-related apoptosis pathways were involved in the cytotoxic action of berberine, as evidenced by the expression of mitochondrial dysfunction-mediated proteins. Moreover, a total of 160 significantly altered proteins were screened, among which AKAP12 presented significantly increased levels under berberine treatment. Bioinformatic analysis of various public datasets showed that expression of AKAP12 in HCC liver tissues was downregulated, emphasizing its role as a tumor suppressor. Immunoblotting validated the increased levels of AKAP12, while co-immunoprecipitation identified its interaction with Cyclin D1. These data, together with flow cytometry analysis, suggested that AKAP12 mediated cell cycle arrest, thereby suppressing cell proliferation. Altogether, the antiproliferative action of berberine in HepG2 cells involves both apoptosis and cell cycle arrest. Regulating AKAP12 signalling by berberine might provide a promising strategy for HCC treatment.
Collapse
Affiliation(s)
- Lele Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
| | - Jiliang Cao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
| | - Jinchao Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
| | - Jiagang Deng
- Collaborative Innovation Center of Research on Functional Ingredients from Agricultural Residues, Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiaotao Hou
- Collaborative Innovation Center of Research on Functional Ingredients from Agricultural Residues, Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Erwei Hao
- Collaborative Innovation Center of Research on Functional Ingredients from Agricultural Residues, Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Zhengcai Du
- Collaborative Innovation Center of Research on Functional Ingredients from Agricultural Residues, Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
| |
Collapse
|