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Chang R, Wang X, Li Y, Zhang S. Pyridinium and ammonium stable isotope labeling agents and their performance in the analysis of alkylamines in food and food packaging materials. Food Chem 2023; 408:135240. [PMID: 36549157 DOI: 10.1016/j.foodchem.2022.135240] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/04/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
Two pairs of stable isotope labeling (SIL) agents, (4-carboxyphenyl)trimethylammonium iodide (d0-CPTA) and its deuterated counterpart d3-CPTA, 1-methyl-nicotinamide iodide (d0-MNA) and its deuterated counterpart d3-MNA, were designed and synthesized. Their mass spectrometry (MS) sensitivity enhancement effect was studied and compared with commercial dansyl chloride to provide inspiration for labeling agent design. CPTA with quaternary ammonium group showed much higher MS sensitivity enhancement effect and was applied to the SIL analysis of alkylamines in food and food packaging materials. The matrix effect was minimized due to the SIL strategy and the permanent charge of the CPTA. The limits of detection (LODs) were in the range of 2.9-5.1 ng/L, and the limits of quantitation (LOQs) were in the range of 9.6-16.8 ng/L. The recoveries ranged from 91.2 % to 97.1 % with relative standard deviations of less than 6.6 %, and the matrix effect ranged from -1.8 % to -4.9 %.
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Affiliation(s)
- Rui Chang
- Shandong Province Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, PR China
| | - Xueting Wang
- Shandong Province Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, PR China
| | - Yanxin Li
- Shandong Province Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, PR China
| | - Shijuan Zhang
- Shandong Province Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, PR China.
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DU X, Zhang J, Liu L, Xu B, Han H, Dai W, Pei X, Fu X, Hou S. A novel anticancer property of Lycium barbarum polysaccharide in triggering ferroptosis of breast cancer cells. J Zhejiang Univ Sci B 2022; 23:286-299. [PMID: 35403384 DOI: 10.1631/jzus.b2100748] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Breast cancer is one of the most malignant tumors and is associated with high mortality rates among women. Lycium barbarum polysaccharide (LBP) is an extract from the fruits of the traditional Chinese herb, L. barbarum. LBP is a promising anticancer drug, due to its high activity and low toxicity. Although it has anticancer properties, its mechanisms of action have not been fully established. Ferroptosis, which is a novel anticancer strategy, is a cell death mechanism that relies on iron-dependent lipid reactive oxygen species (ROS) accumulation. In this study, human breast cancer cells (Michigan Cancer Foundation-7 (MCF-7) and MD Anderson-Metastatic Breast-231 (MDA-MB-231)) were treated with LBP. LBP inhibited their viability and proliferation in association with high levels of ferroptosis. Therefore, we aimed to ascertain whether LBP reduced cell viability through ferroptosis. We found that the structure and function of mitochondria, lipid peroxidation, and expression of solute carrier family 7 member 11 (SLC7A11, also known as xCT, the light-chain subunit of cystine/glutamate antiporter system Xc-) and glutathione peroxidase 4 (GPX4) were altered by LBP. Moreover, the ferroptosis inhibitor, Ferrostatin-1 (Fer-1), rescued LBP-induced ferroptosis-associated events including reduced cell viability and glutathione (GSH) production, accumulation of intracellular free divalent iron ions and malondialdehyde (MDA), and down-regulation of the expression of xCT and GPX4. Erastin (xCT inhibitor) and RSL3 (GPX4 inhibitor) inhibited the expression of xCT and GPX4, respectively, which was lower after the co-treatment of LBP with Erastin and RSL3. These results suggest that LBP effectively prevents breast cancer cell proliferation and promotes ferroptosis via the xCT/GPX4 pathway. Therefore, LBP exhibits novel anticancer properties by triggering ferroptosis, and may be a potential therapeutic option for breast cancer.
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Affiliation(s)
- Xing DU
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Jingjing Zhang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China.,Department of Clinical Pathology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Ling Liu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Bo Xu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Hang Han
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Wenjie Dai
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Xiuying Pei
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Xufeng Fu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China.
| | - Shaozhang Hou
- Department of Clinical Pathology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China. ,
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Sun Y, Ai Y, Yao F, Mao F, Wang X, Zhang Y, Guo F, He Y, Liu J, Zhang N. Characterization of Biogenic Amines in Seven Kinds of Traditional Chinese Animal Medicines by High Performance Liquid Chromatography with Precolumn Derivatization. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822010166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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