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Wang J, Liao N, Liu G, Li Y, Xu F, Shi J. Diversity and regioselectivity of O-methyltransferases catalyzing the formation of O-methylated flavonoids. Crit Rev Biotechnol 2024; 44:1203-1225. [PMID: 38035668 DOI: 10.1080/07388551.2023.2280755] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 08/26/2023] [Accepted: 10/17/2023] [Indexed: 12/02/2023]
Abstract
Flavonoids and their methylated derivatives have immense market potential in the food and biomedical industries due to their multiple beneficial effects, such as antimicrobial, anti-inflammatory, and anticancer activities. The biological synthesis of flavonoids and their derivatives is often accomplished via the use of genetically modified microorganisms to ensure large-scale production. Therefore, it is pivotal to understand the properties of O-methyltransferases (OMTs) that mediate the methylation of flavonoids. However, the properties of these OMTs are governed by their: sources, substrate specificity, amino acid residues in the active sites, and the intricate mechanism. In order to obtain a clue for the selection of suitable OMTs for the biosynthesis of a target methylated flavonoid, we made a comprehensive review of the currently reported results, with a particular focus on their comparative regioselectivity for different flavonoid substrates. Additionally, the possible mechanisms for the diversity of this class of enzymes were explored using molecular simulation technology. Finally, major gaps in our understanding and areas for future studies were discussed. The findings of this study may be useful in selecting genes that encode OMTs and designing enzyme-based processes for synthesizing O-methylated flavonoids.
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Affiliation(s)
- Juan Wang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Ning Liao
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Guanwen Liu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Yinghui Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Fengqin Xu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, People's Republic of China
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Feng Y, Ren Y, Zhang X, Yang S, Jiao Q, Li Q, Jiang W. Metabolites of traditional Chinese medicine targeting PI3K/AKT signaling pathway for hypoglycemic effect in type 2 diabetes. Front Pharmacol 2024; 15:1373711. [PMID: 38799166 PMCID: PMC11116707 DOI: 10.3389/fphar.2024.1373711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/23/2024] [Indexed: 05/29/2024] Open
Abstract
Type 2 diabetes mellitus is a chronic metabolic disease characterized by insulin resistance, with high morbidity and mortality worldwide. Due to the tightly intertwined connection between the insulin resistance pathway and the PI3K/AKT signaling pathway, regulating the PI3K/AKT pathway and its associated targets is essential for hypoglycemia and the prevention of type 2 diabetes mellitus. In recent years, metabolites isolated from traditional Chinese medicine has received more attention and acceptance for its superior bioactivity, high safety, and fewer side effects. Meanwhile, numerous in vivo and in vitro studies have revealed that the metabolites present in traditional Chinese medicine possess better bioactivities in regulating the balance of glucose metabolism, ameliorating insulin resistance, and preventing type 2 diabetes mellitus via the PI3K/AKT signaling pathway. In this article, we reviewed the literature related to the metabolites of traditional Chinese medicine improving IR and possessing therapeutic potential for type 2 diabetes mellitus by targeting the PI3K/AKT signaling pathway, focusing on the hypoglycemic mechanism of the metabolites of traditional Chinese medicine in type 2 diabetes mellitus and elaborating on the significant role of the PI3K/AKT signaling pathway in type 2 diabetes mellitus. In order to provide reference for clinical prevention and treatment of type 2 diabetes mellitus.
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Affiliation(s)
| | | | | | | | | | | | - Wenwen Jiang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
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Lee D, Imm JY. Antiobesity Effect of Tricin, a Methylated Cereal Flavone, in High-Fat-Diet-Induced Obese Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9989-9994. [PMID: 30173509 DOI: 10.1021/acs.jafc.8b03312] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The antiobesity potential of tricin, a methylated cereal flavonoid, was examined using a high-fat-diet-induced obese mice model. The body weight ( P < 0.01) and body fat mass ( P < 0.05) were significantly decreased in the high-dose tricin supplementation group (TH: 200 mg/kg diet) in comparison to the high fat diet control group (CON) after a 12-week feeding trial. The serum (60.9 ± 2.09 mg/dL) and hepatic triglyceride levels (45.3 ± 4.42 nmol/mg protein) in the TH group were significantly decreased in comparison to the CON group (78.3 ± 5.09 mg/dL, 76.3 ± 8.10 nmol/mg protein), respectively. This antiobesity effect was attributed to a decrease in the expression of lipogenic markers crucial for fat synthesis in the liver (fatty acid synthase, stearoyl-CoA desaturase 1, elongation of long-chain fatty acids family member 6, glycerol-3-phosphate acyltransferase, and diglyceride acyltransferase) and suppressed expression of transcription factors associated with adipocyte differentiation (peroxisome proliferator-activated receptor γ and CCAAT/enhancer-binding protein α). These lipid-lowering effects are mediated by the activation of adenosine 5'-monophosphate-activated protein kinase.
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Affiliation(s)
- Dabeen Lee
- Department of Foods and Nutrition , Kookmin University , 861-1, Jeongneung-dong, Seongbuk-gu, Seoul 02-707 , Korea
| | - Jee-Young Imm
- Department of Foods and Nutrition , Kookmin University , 861-1, Jeongneung-dong, Seongbuk-gu, Seoul 02-707 , Korea
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Zhang F, Zhang JG, Qu J, Zhang Q, Prasad C, Wei ZJ. Assessment of anti-cancerous potential of 6-gingerol (Tongling White Ginger) and its synergy with drugs on human cervical adenocarcinoma cells. Food Chem Toxicol 2017; 109:910-922. [PMID: 28249781 DOI: 10.1016/j.fct.2017.02.038] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/23/2017] [Accepted: 02/25/2017] [Indexed: 12/11/2022]
Abstract
The anti-cancerous activity of 6-gingerol extracted from Tongling White Ginger was investigated. 6-Gingerol inhibited the growth of HeLa cells with IC50 (96.32 μM) and IC80 (133.01 μM) and led to morphological changes, induced the cell cycle arrest in G0/G1-phase and ultimately resulted into apoptosis. Among cell cycle-related genes and proteins, the expression of cyclin (A, D1, E1) reduced, while of CDK-1, p21 and p27 showed slight decrease, except cyclin B1 and E1 (protein). Western blotting reported the induction of apoptosis with an increased Bax/Bcl-2 ratio, release of cytochrome c, cleavage of caspase-3, -8, -9 and PRPP in treated cells. 6-Gingerol activated AMPK, but inhibited PI3K/AKT phosphorylation with reduced P70S6K expression and also suppressed the mTOR phosphorylation. 6-Gingerol with 5-FU and Ptx resulted in 83.2% and 52% inhibition respectively, this synergy have stimulated apoptosis proteins more efficiently as compared to 6-Gingerol alone (10.75%) under in vitro conditions.
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Affiliation(s)
- Fang Zhang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Jian-Guo Zhang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Jie Qu
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Qi Zhang
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
| | - Chandan Prasad
- Department of Nutrition and Food Sciences, Texas Woman's University, Denton, TX, USA.
| | - Zhao-Jun Wei
- School of Food Science and Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
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Kim S, Go GW, Imm JY. Promotion of Glucose Uptake in C2C12 Myotubes by Cereal Flavone Tricin and Its Underlying Molecular Mechanism. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3819-3826. [PMID: 28474889 DOI: 10.1021/acs.jafc.7b00578] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The effect of tricin, a methylated flavone widely distributed in cereals, on glucose uptake and the underlying molecular mechanism was investigated using C2C12 myotubes. Tricin significantly increased glucose uptake in C2C12 myotubes, regardless of the absence (1.4-fold at 20 μM) or presence (1.6-fold at 20 μM) of insulin. The GLUT4 expression on the plasma membrane was increased 1.6-fold after tricin treatment (20 μM) in the absence of insulin. Tricin treatment significantly activated the insulin-dependent cell signaling pathway, including the activation of insulin receptor substrate-1 (IRS1), phosphoinositide 3-kinase (PI3K), protein kinase B (AKT), and AKT substrate of 160 kDa (AS160). The oral administration of tricin (64 and 160 mg kg-1 of body weight day-1) also significantly lowered blood glucose levels in glucose-loaded C57BL/6 mice (p < 0.05). These results suggest that tricin has great potential to be used as a functional agent for glycemic control.
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Affiliation(s)
- Sohyun Kim
- Department of Foods and Nutrition, Kookmin University , 861-1, Jeongnung-dong, Seongbuk-gu, Seoul 136-702, Korea
| | - Gwang-Woong Go
- Department of Foods and Nutrition, Kookmin University , 861-1, Jeongnung-dong, Seongbuk-gu, Seoul 136-702, Korea
| | - Jee-Young Imm
- Department of Foods and Nutrition, Kookmin University , 861-1, Jeongnung-dong, Seongbuk-gu, Seoul 136-702, Korea
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Zhang F, Thakur K, Hu F, Zhang JG, Wei ZJ. 10-Gingerol, a Phytochemical Derivative from "Tongling White Ginger", Inhibits Cervical Cancer: Insights into the Molecular Mechanism and Inhibitory Targets. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2089-2099. [PMID: 28230361 DOI: 10.1021/acs.jafc.7b00095] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
With the aim of evaluating anticancerous activities of 10-gingerol (10-G) against HeLa cells, it was purified and identified from "Tongling white ginger" by HSCCC, UPLC-TOF-MS/MS, and NMR analysis, respectively. 10-G inhibited the proliferation of HeLa cells at IC50 (29.19 μM) and IC80 (50.87 μM) with altered cell morphology, increased cytotoxicity, and arrested cell cycle in the G0/G1 phase. Most cell cycle related genes and protein expression significantly decreased, followed by a slight decrease in a few without affecting cyclin B1 and cyclin E1 (protein). Both death receptors significantly up-regulated and activated apoptosis indicators (caspase family). Furthermore, significant changes in mitochondria-dependent pathway markers were observed and led to cell death. 10-G led to PI3K/AKT inhibition and AMPK activation to induce mTOR-mediated cell apoptosis in HeLa cells. These results can be an asset to exploit 10-G with other medicinal plant derivatives for future applications.
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Affiliation(s)
- Fang Zhang
- School of Food Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
| | - Kiran Thakur
- School of Food Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
| | - Fei Hu
- School of Food Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
| | - Jian-Guo Zhang
- School of Food Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
| | - Zhao-Jun Wei
- School of Food Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
- Agricultural and Forestry Specialty Food Processing Industry Technological Innovation Strategic Alliance of Anhui Province , Hefei 230009, People's Republic of China
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