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Jiang TT, Zhai LL, Wang ZJ, Wang XY, Li JN, Zhai YJ, Li D, Han WB. Polyketides with α-glucosidase inhibitory and neuroprotective activities from Aspergillus versicolor associated with Pedicularis sylvatica. Org Biomol Chem 2024; 22:4179-4189. [PMID: 38716654 DOI: 10.1039/d4ob00316k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Aspergillus versicolor, an endophytic fungus associated with the herbal medicine Pedicularis sylvatica, produced four new polyketides, aspeversins A-D (1-2 and 5-6) and four known compounds, O-methylaverufin (2), aversin (3), varilactone A (7) and spirosorbicillinol A (8). Their structures were elucidated by extensive spectroscopic data analysis, and their absolute configurations were determined by calculated electronic circular dichroism (ECD) and Mo2(AcO)4-induced CD data. Compound 5 was found to exhibit α-glucosidase inhibitory activity with an IC50 value of 25.57 μM. An enzyme kinetic study indicated that 5 was a typical uncompetitive inhibitor toward α-glucosidase, which was supported by a molecular docking study. Moreover, compounds 1-3 and 5 also improved the cell viability of PC12 cells on a 1-methyl-4-phenylpyridinium (MPP+)-induced Parkinson's disease model, indicating their neuroprotective potential as antiparkinsonian agents.
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Affiliation(s)
- Ting-Ting Jiang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Liang-Liang Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Zi-Jue Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Xin-Yu Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Jian-Nan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Yi-Jie Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Ding Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
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Feng Q, Zhang J, Luo S, Huang Y, Peng Z, Wang G. Synthesis, biological evaluation and action mechanism of 7H-[1,2,4] triazolo [3,4-b] [1,3,4] thiadiazine-phenylhydrazone derivatives as α-glucosidase inhibitors. Eur J Med Chem 2023; 262:115920. [PMID: 37939444 DOI: 10.1016/j.ejmech.2023.115920] [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: 07/25/2023] [Revised: 09/07/2023] [Accepted: 10/12/2023] [Indexed: 11/10/2023]
Abstract
In our work, several 7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-phenylhydrazone derivatives as α-glucosidase inhibitors (α-GIs) were synthesized and characterized by 1H NMR, 13C NMR, and HRMS spectrum. Then, their bio-activity against the α-glucosidase (α-Glu) was further evaluated. Among them, almost all compounds displayed better bio-activity with IC50 from 31.23 ± 0.89 to 213.50 ± 4.19 μM than acarbose (IC50 = 700.20 ± 10.55 μM). In particular, compound 5o showed the best potency to inhibit α-Glu in a mixed manner. Moreover, the action mechanisms of 5o were further clarified including fluorescence quenching, circular dichroism spectra, three-dimensional fluorescence spectra, molecular docking, etc. All mechanism studies revealed that 5o could arouse the changed secondary structure of α-Glu to hinder enzyme catalytic activity. It was observed from an in vivo study that 5o of 20 mg/kg could significantly decrease by 24.45 % postprandial blood glucose in mice vs. the control. Meanwhile, 5o had low drug-drug interaction potential and was likely to be an orally active compound. Moreover, 5o was observed to be no obvious cytotoxicity to HEK-293 cells. In summary, compound 5o exhibited one potential to be further applied as an antidiabetic drug.
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Affiliation(s)
- Qianqian Feng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China; State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Jinfeng Zhang
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China; State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Shuang Luo
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China; State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Yong Huang
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, China
| | - Zhiyun Peng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
| | - Guangcheng Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China.
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Feng Q, Yang W, Peng Z, Wang G. Utilizing bio-affinity ultrafiltration combined with UHPLC Q-Exactive Plus Orbitrap HRMS to detect potential α-glucosidase inhibitors in Oxalis corniculate L. Int J Biol Macromol 2023; 252:126490. [PMID: 37625761 DOI: 10.1016/j.ijbiomac.2023.126490] [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: 05/21/2023] [Revised: 08/04/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Oxalis corniculate L. (O. corniculate) was used to treat diabetes in Chinese folk as a popular tea drink. In this work, 31 compounds from O. corniculate were screened and identified as potential α-Glucosidase inhibitors (α-GIs). Among them, 6 compounds displayed stronger inhibitory activity than acarbose (IC50 = 212.9 ± 5.98 μg/mL). Especially, the most effective compounds quercetin (Qu, IC50 = 4.70 ± 0.40 μg/mL) and luteolin (Lu, IC50 = 15.72 ± 0.75 μg/mL) inhibited α-Glu in competitive and mixed manners, respectively. Moreover, fluorescence quenching, circular dichroism (CD), and molecular docking study revealed that they can arouse the changes in the secondary structure and hydrophobic micro-environment of the enzyme mainly through a hydrophobic binding. Furthermore, it was observed that oral administration of Qu (20 mg/kg) can significantly reduce postprandial blood glucose (PBG) levels in mice vs. the control group. To sum up, the above research confirmed that O. corniculate could prevent and treat postprandial hyperglycemia as a good tea drink, and the plant was an excellent source to obtain natural α-GIs.
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Affiliation(s)
- Qianqian Feng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Wei Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Zhiyun Peng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
| | - Guangcheng Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China.
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In Vitro Alpha-Glucosidase Inhibitory Activity and the Isolation of Luteolin from the Flower of Gymnanthemum amygdalinum (Delile) Sch. Bip ex Walp. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072132. [PMID: 35408529 PMCID: PMC9000735 DOI: 10.3390/molecules27072132] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 11/24/2022]
Abstract
Diabetes mellitus is a major health issue that has posed a significant challenge over the years. Gymnanthemum amygdalinum is a well-known plant that can be potentially used to treat this disease. Therefore, this study aimed to evaluate the inhibitory effect of its root, stem bark, leaves, and flower extracts on alpha-glucosidase using an in vitro inhibition assay to isolate the bioactive compounds and determine their levels in the samples. The air-dried plant parts were extracted by maceration using methanol. The results showed that the flower extract had the greatest inhibitory effect (IC50 47.29 ± 1.12 µg/mL), followed by the leaves, roots, and stem bark. The methanolic flower extract was further fractionated with different solvents, and the ethyl acetate fraction showed the strongest activity (IC50 19.24 ± 0.12 µg/mL). Meanwhile, acarbose was used as a positive control (IC50 73.36 ± 3.05 µg/mL). Characterization based on UV, 1H-, and 13C-NMR established that the ethyl acetate fraction yielded two flavonoid compounds, namely, luteolin and 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-4H-chromen-4-on, which had IC50 values of 6.53 ± 0.16 µg/mL and 39.95 ± 1.59 µg/mL, respectively. The luteolin levels in the crude drug, methanolic extract, and ethyl acetate fraction were 3.4 ± 0.2 mg (0.3%), 32.4 ± 0.8 mg (3.2%), and 68.9 ± 3.4 mg (6.9%) per 1 g samples, respectively. These results indicated that the G. amygdalinum flower extract exerted potent inhibitory alpha-glucosidase activity.
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Ji Y, Liu D, jin Y, Zhao J, Zhao J, Li H, Li L, Zhang H, Wang H. In vitro and in vivo inhibitory effect of anthocyanin-rich bilberry extract on α-glucosidase and α-amylase. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111484] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Özcan K. Determination of biological activity of Carduus lanuginosus: an endemic plant in Turkey. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:45-53. [PMID: 31179726 DOI: 10.1080/09603123.2019.1628187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
The genus Carduus is traditionally used in the Anatolian folk medicine for treating various diseases. Therefore, the enzyme inhibiting potential, antioxidant-antimicrobial activity, and phytochemical profile of Carduus lanuginosus extracts were investigated. The analysis of phenolic compounds was carried out by using RP-HPLC for the chemical characterization of methanol extract. The total polyphenols, total phenolic and flavonoid contents, antioxidant activity (ABTS and DPPH assay), α-amylase, and α-glucosidase inhibition activities were determined using colorimetric methods. Moreover, the antimicrobial activity was examined using the disc diffusion and microdilution methods. The ethylacetate extract was found to have the highest flavonoid and phenolic content. The water and hexane extracts showed strong enzyme inhibitory activity against the α-amylase and α-glucosidase. The methanol extract was found to contain high concentration of chlorogenic acid. The hexane and ethylacetate extracts showed to have significant MIC values on Enterococcus faecium. In conclusion, the extracts of C. lanuginosus might have a significant potential for the use as a natural pharmaceutical agent.
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Affiliation(s)
- Kadriye Özcan
- Department of Genetic and Bioengineering, Giresun University , Giresun, Turkey
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Chemical structure and inhibition on α-glucosidase of a novel polysaccharide from Hypsizygus marmoreus. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hu GL, Gao Y, Peng XR, Liu JH, Su HG, Huang YJ, Qiu MH. Lactam ent-Kaurane Diterpene: A New Class of Diterpenoids Present in Roasted Beans of Coffea arabica. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6112-6121. [PMID: 32348136 DOI: 10.1021/acs.jafc.9b08149] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Seven new lactam ent-kaurane diterpenoids, cafemides A-G (1-7), were isolated from roasted beans of Coffea arabica. Their structures were elucidated by extensive spectroscopic analysis including 1D, 2D NMR (heteronuclear single quantum correlation (HSQC), heteronuclear multiple bond correlation (HMBC), 1H-1H correlation spectroscopy (COSY), and rotating frame Overhauser effect spectroscopy (ROESY)), high-resolution electrospray ionization mass spectrometry (HRESIMS), and IR spectra. They were divided into subtype I-III according to the structure. Further, with the aid of liquid chromatography-tandem mass spectrometry (LC-MS/MS) based molecular network, seven (8-14) subtype II diterpenoids were successfully identified. In addition, a variety of other subtypes of N-containing diterpenoids have been proven in roasted coffee. Compounds 1, 2, 3, 5, and 7 showed a moderate inhibitory effect on α-glucosidase with an IC50 value of 8.28 ± 0.62 μM, 38.23 ± 8.87 μM, 28.94 ± 1.42 μM, 12.44 ± 1.37 μM, and 22.2 ± 5.34 μM, respectively. To the best of our knowledge, this is the first time that N-containing diterpenoids have been reported in coffee.
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Affiliation(s)
- Gui-Lin Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ya Gao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xing-Rong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Jun-Hong Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hai-Guo Su
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yan-Jie Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ming-Hua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Özcan K. Antibacterial, antioxidant and enzyme inhibition activity capacities of Doronicum macrolepis (FREYN&SINT): An endemic plant from Turkey. Saudi Pharm J 2020; 28:95-100. [PMID: 31920435 PMCID: PMC6950946 DOI: 10.1016/j.jsps.2019.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 11/29/2019] [Indexed: 01/04/2023] Open
Abstract
In the present study, the antioxidant, enzyme inhibition (α-amylase, α-glucosidase, and cholinesterase) and antimicrobial (MIC) activities of three different solvent (ethanol, methanol, or ethyl acetate) extracts of stem, root, and flower of Doronicum macrolepis plant were investigated. In addition to this, the chemical composition and the antimicrobial activity of the essential oil were determined. Antioxidant activity was detected using ABTS and DPPH assays. Antimicrobial activity evaluated by microdilution method against to nineteen microorganisms. Also, enzyme inhibition activities were determined by colorimetric methods. Essential oil of the plant extracted by hydrodistilation and characterized using GC/MS. The antioxidant properties of the flower were determined to be higher than those of the other segments of this plant. Moreover, the total phenolic and flavonoid contents were also found to be higher in the flower parts. The highest enzyme inhibition activity was observed to be α-amylase (221.54 mmol ACAE/g extract) in flower ethylacetate extract, α-glucosidase (15.32 mmol ACAE/g extract) in flower ethanol extract, and cholinesterase (AChE: 2.4 and BChE: 22.35 mg GALE/g extract) in stem ethylacetate extract. Besides them, the antimicrobial activity of the essential oil was found to be higher than the extracts. It showed a high level of inhibition especially on E. coli at 4 µg/ml concentration. Moreover, remarkable inhibition was observed for two candida strains tested. In conclusion, the results suggest that, because of its bioactivity including the antioxidant, antimicrobial, and enzyme inhibition properties, the D. macrolepis can be accepted as a promising and natural source for the industrial applications. The present study is the first study, in which the bioactive components and the antioxidant, antimicrobial, and enzyme inhibition properties of endemic D. macrolepis plant were determined.
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Affiliation(s)
- Kadriye Özcan
- Department of Genetics and Bioengineering, Giresun University, Giresun, Turkey
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Yan Z, Huang C, Guo H, Zheng S, He J, Lin J, Long Y. Isobenzofuranone monomer and dimer derivatives from the mangrove endophytic fungus Epicoccum nigrum SCNU-F0002 possess α-glucosidase inhibitory and antioxidant activity. Bioorg Chem 2020; 94:103407. [DOI: 10.1016/j.bioorg.2019.103407] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/26/2019] [Accepted: 10/27/2019] [Indexed: 12/11/2022]
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Acet T, Ozcan K, Zengin G. An assessment of phenolic profiles, fatty acid compositions, and biological activities of two Helichrysum species: H. plicatum and H. chionophilum. J Food Biochem 2019; 44:e13128. [PMID: 31868928 DOI: 10.1111/jfbc.13128] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/12/2019] [Accepted: 12/02/2019] [Indexed: 02/06/2023]
Abstract
In the present study, we aimed to search and compare the biological activities of the ethanol (EtOH), methanol (MeOH), and ethylacetate (EtOAc) solvent extracts of the flower, stem, and root parts of two Helichrysum plants (H. chionophilum (Hc) and H. plicatum subsp. plicatum (Hp)). The antioxidant properties were determined by using (2,2-diphenyl-1-picrylhydrazyl) (DPPH) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. The enzyme inhibitory effects of the extracts were investigated on butyrylcholinesterase (BChE), acetylcholinesterase (AChE), α-glucosidase, and α-amylase. Palmitic acid (C 16:0) was also determined as major fatty acids in the tested oils (31.21%-67.68%). In both plants, it was found that the EtOAc extracts of the flowers had a strong antioxidant and enzyme inhibitory effect. In conclusion, the results obtained in the present study showed that H. chionophilum and H. plicatum can be seen as a promising source for the natural bioactive compounds that can be used in therapeutic applications. PRACTICAL APPLICATIONS: The members of the genus Helichrysum have been widely taken for therapeutic purposes in traditional medicine as well as food. In this context, we investigated the chemical characterization and biological activities of two Helichrysum species extracts (H. chionophilum and H. plicatum subsp. plicatum). Antioxidant capacity, enzyme inhibition and anti-microbial effects were tested for biological activities. Chemical characterization was identified by high performance liquid chromatography (HPLC) (for phenolic) and gas chromatography-flame ioanization detector (GC-FID) (for fatty acids). Based on our findings, the species may be valuable for designing novel food products.
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Affiliation(s)
- Tuba Acet
- Department of Genetic and Bioengineering, Faculty of Engineering and Natural Sciences, Gumushane University, Gumushane, Turkey
| | - Kadriye Ozcan
- Department of Genetic and Bioengineering, Engineering Faculty, Giresun University, Giresun, Turkey
| | - Gokhan Zengin
- Deparment of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey
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Yin H, Dan WJ, Fan BY, Guo C, Wu K, Li D, Xian KF, Pescitelli G, Gao JM. Anti-inflammatory and α-Glucosidase Inhibitory Activities of Labdane and Norlabdane Diterpenoids from the Rhizomes of Amomum villosum. JOURNAL OF NATURAL PRODUCTS 2019; 82:2963-2971. [PMID: 31710213 DOI: 10.1021/acs.jnatprod.9b00283] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A new tetranorditerpenoid (1), two new labdane diterpenoids (2, 3), and nine known analogues (4-12) were isolated from the rhizomes of Amomum villosum var. xanthioides. Compound 1 is an unprecedented rearranged tetranorlabdane diterpenoid, featuring a 6/6/5 fused tricarbocyclic skeleton with an α,β-unsaturated cyclopentenone unit, while 2 is a structurally rare labdane diterpenoid carrying a five-membered cyclic anhydride moiety. Their structures and absolute configurations were established on the basis of spectroscopic data and the experimental and calculated ECD data. Compound 4 showed inhibitory activity against nitric oxide production, with an IC50 value of 2.4 μM, and also inhibited α-glucosidase activity (IC50 = 10.0 μM).
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Affiliation(s)
- Hong Yin
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , Shaanxi , People's Republic of China
| | - Wen-Jia Dan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , Shaanxi , People's Republic of China
| | - Bo-Yi Fan
- School of Pharmacy , Nantong University , Nantong 226001 , Jiangsu , People's Republic of China
| | - Chao Guo
- School of Pharmacy , Xinxiang Medical University , Xinxiang 453003 , Henan , People's Republic of China
| | - Kui Wu
- Department of Chemistry , University at Albany, State University of New York , Albany , New York 12222 , United States
| | - Ding Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , Shaanxi , People's Republic of China
| | - Kui-Feng Xian
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , Shaanxi , People's Republic of China
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Pisa 56124 , Italy
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy , Northwest A&F University , Yangling 712100 , Shaanxi , People's Republic of China
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Menezes JC, Diederich MF. Natural dimers of coumarin, chalcones, and resveratrol and the link between structure and pharmacology. Eur J Med Chem 2019; 182:111637. [DOI: 10.1016/j.ejmech.2019.111637] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 02/07/2023]
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14
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Akhtar N, Jafri L, Green BD, Kalsoom S, Mirza B. A Multi-Mode Bioactive Agent Isolated From Ficus microcarpa L. Fill. With Therapeutic Potential for Type 2 Diabetes Mellitus. Front Pharmacol 2018; 9:1376. [PMID: 30542284 PMCID: PMC6277780 DOI: 10.3389/fphar.2018.01376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 11/08/2018] [Indexed: 12/29/2022] Open
Abstract
Type 2 diabetes is a metabolic disorder, characterized by hyperglycemia and glucose intolerance. Natural products and its derived active compounds may be achievable alternatives for the treatment of type 2 diabetes. In present study we investigated the antidiabetic potential of Ficus microcarpa and isolated bioactive compounds i.e., Plectranthoic acid A (PA-A) and 3,4,5,7-Flavantetrol (FL). Anti-hyperglycemic potential was evaluated via α-glucosidase, α-amylase and dipeptidyl peptidase 4 (DPP-4) assays. 5'AMP-activated kinase (AMPK) activation potential was assessed by using primary hepatocytes. Distribution of PA-A in different parts of Ficus microcarpa was evaluated by using rapid high-performance liquid chromatography (HPLC). Ethyl acetate fraction (FME) exhibited significant inhibition of α-glucosidase, α-amylase, and DPP-4, therefore, was selected for isolation of bioactive compounds. Among isolated compounds PA-A was more potent and possessed pleotropic inhibitory activity with IC50 values of 39.5, 55.5, and 51.4 μM against α-glucosidase, α-amylase, and DPP-4, respectively. Our results showed that PA-A is also a potent activator of AMPK which is a central hub of metabolic regulation. Molecular docking studies confirmed the activity of PA-A against α-glucosidase, α-amylase, and DPP-4. Rapid HPLC method revealed that maximum concentration of PA-A is present in the stem (2.25 μg/mg dry weight) of Ficus microcarpa. Both in vitro and in silico studies proposed that Ficus microcarpa and its isolated compound PA-A could be an important natural source for alleviating the symptoms of type 2 diabetes mellitus and we suggest that PA-A should be explored further for its ultimate use for the treatment of type 2 diabetes.
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Affiliation(s)
- Nosheen Akhtar
- Department of Molecular Medicine, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Laila Jafri
- Department of Biochemistry, Bahauddin Zakariya University, Multan, Pakistan
| | - Brian D Green
- Advanced ASSET Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, United Kingdom
| | - Saima Kalsoom
- Pakistan Institute of Engineering and Applied Sciences, Nilore, Pakistan
| | - Bushra Mirza
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
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15
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Wei YL, Yu ZL, Huo XK, Tian XG, Feng L, Huang SS, Deng S, Ma XC, Jia JM, Wang C. Diterpenoids from the roots of Euphorbia fischeriana and their inhibitory effects on α-glucosidase. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2018; 20:977-984. [PMID: 28944698 DOI: 10.1080/10286020.2017.1367923] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/11/2017] [Indexed: 06/07/2023]
Abstract
Chemical investigation has been performed on the roots of Euphorbia fischeriana, a traditional Chinese medicine. Three diterpenoids were obtained using various chromatographic techniques, and their structures were determined by spectroscopic data including HRESIMS, 1D NMR, 2D NMR, ECD, and calculated ECD, which gave two new diterpenoids, daphnane type (1) and ent-pimarene type (3). Additionally, the isolated compounds (1-3) displayed moderate inhibitory effects against α-glucosidase in an in vitro bioassay.
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Affiliation(s)
- Yun-Long Wei
- a School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Zhen-Long Yu
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Xiao-Kui Huo
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Xiang-Ge Tian
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Lei Feng
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Shan-Shan Huang
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Sa Deng
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Xiao-Chi Ma
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
| | - Jing-Ming Jia
- a School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Chao Wang
- b College of Pharmacy, Academy of Integrative Medicine, and Department of Biochemistry and Molecular Biology , Dalian Medical University , Dalian 116044 , China
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16
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Fang Y, Wang S, Wu J, Zhang L, Wang Z, Gan L, He J, Shi H, Hou J. The kinetics and mechanism of α-glucosidase inhibition by F5-SP, a novel compound derived from sericin peptides. Food Funct 2018; 8:323-332. [PMID: 28045172 DOI: 10.1039/c6fo01215a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The inhibition of α-glucosidase decreases postprandial blood glucose and therefore plays an important role in the treatment of type 2 diabetes mellitus. The present study investigated and characterized a peptide fraction of sericin hydrolysate, the kinetics of peptide-induced inhibition of α-glucosidase, and the interaction mechanism between the peptides and α-glucosidase. The fraction that eluted with 0.4 M NaCl (F5-SPs) on a DEAE-cellulose column exhibited significant inhibitory activity with an IC50 of 41 ± 1.94 μg mL-1. A kinetics analysis revealed that the F5-SP-induced inhibition was a reversible and parabolic mixed-type inhibition with a Ki value of 86.63 ± 0.014 μg mL-1. F5-SPs can bind to α-glucosidase at multiple sites to alter the conformation of α-glucosidase. F5-SPs were found to be rich in Gly, Ser, Glu, Tyr, Arg, and Pro, and had a sericin-conserved sequence SEDSSEVDIDLGNLG, as analyzed by Nano LC-MS/MS. Fluorescence spectra analysis showed that F5-SPs quenched the intrinsic fluorescence of α-glucosidase by a static quenching mechanism, and circular dichroism analysis suggested that the binding of F5-SPs to α-glucosidase resulted in the alteration of the secondary structure of an enzyme. The results of this study support the dietary recommendation of F5-SPs for the treatment of type 2 diabetes.
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Affiliation(s)
- Yuwen Fang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Shaoyun Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jinhong Wu
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Li Zhang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Zhengwu Wang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Li Gan
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jiajun He
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Haiming Shi
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jingli Hou
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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17
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Effect of coffee roasting on in vitro α-glucosidase activity: Inhibition and mechanism of action. Food Res Int 2018; 111:480-487. [PMID: 30007710 DOI: 10.1016/j.foodres.2018.05.061] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 11/23/2022]
Abstract
In vitro α-glucosidase inhibitory activity of unroasted, and medium, dark and very dark roasted robusta coffee was studied. Coffee extracts significantly inhibited the enzyme activity in a dose-dependent way. The inhibitory activity was well correlated with the degree of roast. Coffee components were separated by gel permeation chromatography into low (1 < MW < 6 kDa), intermediate (15 < MW < 60 kDa) and high (MW > 100 kDa) molecular weight fractions, which were analyzed for the α-glucosidase inhibitory capacity. Only fractions obtained from dark and very dark roasted coffee exhibited inhibitory effect. When the same fraction was obtained from coffee presenting different roasting degree, changes in α-glucosidase inhibition extent were observed. This was attributed to compositional changes within each fraction as induced by roasting. Coffee extracts and their fractions exerted a mixed-type to competitive inhibition against α-glucosidase and these mechanisms are consistent with the complexity of coffee composition.
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18
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Xie F, Wang S, Zhang L, Wu J, Wang Z. Investigating inhibitory activity of novel synthetic sericin peptide on α-D-glucosidase: kinetics and interaction mechanism study using a docking simulation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:1502-1510. [PMID: 28799644 DOI: 10.1002/jsfa.8620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/22/2017] [Accepted: 08/05/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND We synthesised a novel sericin peptide (SP-GI) with α-d-glucosidase inhibitory activity, which has a sequence of SEDSSEVDIDLGN. The kinetics of its peptide-induced inhibition on α-d-glucosidase activity and its interaction mechanism merging with molecular docking were both investigated. RESULTS SP-GI exhibited significant inhibitory activity with an IC50 of 2.9 ± 0.1 µmol L-1 and this inhibition was reversible and non-competitive with a Ki value of 1.0 ± 0.1 µmol L-1 . An interaction study with SP-GI revealed it bound to α-d-glucosidase at a single binding site, resulting in alterations in α-d-glucosidase secondary structure. This led to quenching of intrinsic α-d-glucosidase fluorescence by a static quenching mechanism. Molecular docking results showed that the SP-GI binding site on α-d-glucosidase differed from acarbose, with hydrogen bonding and van der Waals forces being the main binding drivers. CONCLUSION These findings suggest the potential use for SP-GI or other natural sericin peptides as dietary supplements for the treatment of type 2 diabetes. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Fan Xie
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shaoyun Wang
- Institute of Food Biotechnology and Marine Bioresources, College of Biological Science and Technology, Fuzhou University, Fuzhou, China
| | - Li Zhang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jinhong Wu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhengwu Wang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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19
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Ding H, Hu X, Xu X, Zhang G, Gong D. Inhibitory mechanism of two allosteric inhibitors, oleanolic acid and ursolic acid on α-glucosidase. Int J Biol Macromol 2018; 107:1844-1855. [PMID: 29030193 DOI: 10.1016/j.ijbiomac.2017.10.040] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/19/2017] [Accepted: 10/09/2017] [Indexed: 11/28/2022]
Abstract
Glycemic control which can be efficaciously regulated by inhibiting α-glucosidase activity is an effective therapy for diabetes mellitus. This work is to investigate the kinetics and inhibition mechanism of oleanolic acid and ursolic acid on α-glucosidase. Oleanolic acid and ursolic acid exhibited potent inhibitory activities with IC50 values of (6.35±0.02)×10-6 and (1.69±0.03)×10-5molL-1 respectively in a reversible and non-competitive manner. Both of them binding to α-glucosidase induced the conformational change and intrinsic fluorescence quenching of α-glucosidase. The binding constants of oleanolic acid and ursolic acid with α-glucosidase at 298K were (2.04±0.02)×103 and (1.87±0.02)×103Lmol-1, respectively. Docking results showed that oleanolic acid and ursolic acid bound in different allosteric sites of cavity 2 and cavity 4 on α-glucosidase, respectively, which triggered allosteric regulation to perturb conformational dynamics of α-glucosidase, eventually leading to a decrease of catalytic activity of the enzyme. The substrate was not catalyzed by α-glucosidase to generate further products due to formation of a nonreactive ternary complex of oleanolic acid- or ursolic acid-α-glucosidase-substrate. The combination of oleanolic acid and ursolic acid displayed a significant synergistic inhibition on α-glucosidase.
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Affiliation(s)
- Huafang Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ximing Xu
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Info- rmation Engineering, Jiangsu University of Technology, Changzhou 213001, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; New Zealand Institute of Natural Medicine Research, 8 Ha Crescent, Auckland 2104, New Zealand
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20
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Novel 4-Methylumbelliferone Amide Derivatives: Synthesis, Characterization and Pesticidal Activities. Molecules 2018; 23:molecules23010122. [PMID: 29316710 PMCID: PMC6017845 DOI: 10.3390/molecules23010122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 01/03/2018] [Accepted: 01/06/2018] [Indexed: 12/02/2022] Open
Abstract
A series of novel 4-methylumbelliferone amide derivatives were designed, synthesized and characterized by 1H NMR, 13C NMR and HR-ESI-MS. The structures of compounds 4bd and 4be (compounds named by authors) were further confirmed by X-ray single crystal diffraction. The acaricidal, herbicidal and antifungal activities of the synthesized compounds were assayed for their potential use as pesticide. The results indicated that compounds 4bi, 4ac and 4bd were strong acaricidals against Tetranychus cinnabarinus, with 72h corrected mortalities of greater than 80% at 1000 mg/L. Meanwhile, compounds 4bh and 4bf exhibit the strongest inhibition against the taproot development of Digitaria sanguinalis and Chenopodium glaucum, and were even more potent than the commercial herbicide Acetochlor against D. sanguinalis. In addition, compounds 4bk, 4bh and 4bp showed the highest antifungal activity against the mycelium growth of Valsa mali, which makes them more effective than commercial fungicide Carbendazim.
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21
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Wei Y, Wang C, Cheng Z, Tian X, Jia J, Cui Y, Feng L, Sun C, Zhang B, Ma X. Heterodimeric Diterpenoids Isolated from Euphorbia ebracteolata Roots and Their Inhibitory Effects on α-Glucosidase. JOURNAL OF NATURAL PRODUCTS 2017; 80:3218-3223. [PMID: 29148766 DOI: 10.1021/acs.jnatprod.7b00595] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two heterodimeric diterpenoids (1 and 2) comprising abietane lactone and nor-rosane constituent units were isolated from Euphorbia ebracteolata roots. Compound 1 exhibited a moderate inhibitory effect on α-glucosidase (IC50 = 7.94 μM), with a Ki value of 10.8 μM. In silico molecular docking has been performed to investigate the inhibition mechanism. Compound 2 inhibited the acetyl transfer activity of Mycobacterium tuberculosis GlmU (IC50 = 41.85 μM), which is a novel tuberculosis treatment target.
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Affiliation(s)
- Yunlong Wei
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
| | - Chao Wang
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Zhongbin Cheng
- College of Pharmacy, Henan University , Kaifeng 475004, People's Republic of China
| | - Xiangge Tian
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Jingming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
| | - Yonglei Cui
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Lei Feng
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Chengpeng Sun
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Baojing Zhang
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
| | - Xiaochi Ma
- College of Pharmacy, Academy of Integrative Medicine, and Liaoning Engineering Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University , Dalian 116044, People's Republic of China
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22
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Liu J, Chen C, Wu F, Tang J. Study on the synthesis and biological activities of α-substituted arylacetates derivatives. Bioorg Med Chem Lett 2016; 26:1715-9. [DOI: 10.1016/j.bmcl.2016.02.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/29/2016] [Accepted: 02/19/2016] [Indexed: 12/01/2022]
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23
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Gao X, Huang S, Dong P, Wang C, Hou J, Huo X, Zhang B, Ma T, Ma X. Horseradish peroxidase (HRP): a tool for catalyzing the formation of novel bicoumarins. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01682g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Horseradish peroxidase was used to catalyze the formation of bicoumarins. The kinetic analysis and optimization of the transformation conditions were carried out in the present work.
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Affiliation(s)
- Xiaoxv Gao
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Shanshan Huang
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Peipei Dong
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Chao Wang
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Jie Hou
- College of Basic Medical Sciences
- Dalian Medical University
- Dalian
- PR China
| | - Xiaokui Huo
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Baojing Zhang
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
| | - Tonghui Ma
- College of Basic Medical Sciences
- Dalian Medical University
- Dalian
- PR China
| | - Xiaochi Ma
- College of Pharmacy
- Research Institute of Integrated Traditional and Western Medicine
- Dalian Medical University
- Dalian 116044
- PR China
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24
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Imran S, Taha M, Ismail NH, Kashif SM, Rahim F, Jamil W, Wahab H, Khan KM. Synthesis,In vitroand Docking Studies of New Flavone Ethers asα-Glucosidase Inhibitors. Chem Biol Drug Des 2015; 87:361-73. [DOI: 10.1111/cbdd.12666] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/24/2015] [Accepted: 09/07/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Syahrul Imran
- Atta-ur-Rahman Institute for Natural Product Discovery; Universiti Teknologi MARA; Puncak Alam Campus Selangor DE 42300 Malaysia
- Faculty of Applied Sciences; Universiti Teknologi MARA; Shah Alam, Selangor DE 40450 Malaysia
| | - Muhammad Taha
- Atta-ur-Rahman Institute for Natural Product Discovery; Universiti Teknologi MARA; Puncak Alam Campus Selangor DE 42300 Malaysia
- Faculty of Applied Sciences; Universiti Teknologi MARA; Shah Alam, Selangor DE 40450 Malaysia
| | - Nor Hadiani Ismail
- Atta-ur-Rahman Institute for Natural Product Discovery; Universiti Teknologi MARA; Puncak Alam Campus Selangor DE 42300 Malaysia
- Faculty of Applied Sciences; Universiti Teknologi MARA; Shah Alam, Selangor DE 40450 Malaysia
| | - Syed Muhammad Kashif
- Institute of Advance Research Studies in Chemical Sciences; University of Sindh; 76080 Jamshoro Pakistan
| | - Fazal Rahim
- Department of Chemistry; Hazara University; 21300 Mansehra Pakistan
| | - Waqas Jamil
- Institute of Advance Research Studies in Chemical Sciences; University of Sindh; 76080 Jamshoro Pakistan
| | - Habibah Wahab
- Pharmaceutical Design and Simulation Laboratory; School of Pharmaceutical Sciences; Universiti Sains Malaysia; 11800 Pulau Pinang Malaysia
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry; International Center for Chemical and Biological Sciences; University of Karachi; Karachi 75270 Pakistan
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25
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Mirazizi F, Bahrami A, Haghbeen K, Shahbani Zahiri H, Bakavoli M, Legge RL. Rapid and direct spectrophotometric method for kinetics studies and routine assay of peroxidase based on aniline diazo substrates. J Enzyme Inhib Med Chem 2015; 31:1162-9. [PMID: 26526616 DOI: 10.3109/14756366.2015.1103234] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Peroxidases are ubiquitous enzymes that play an important role in living organisms. Current spectrophotometrically based peroxidase assay methods are based on the production of chromophoric substances at the end of the enzymatic reaction. The ambiguity regarding the formation and identity of the final chromophoric product and its possible reactions with other molecules have raised concerns about the accuracy of these methods. This can be of serious concern in inhibition studies. A novel spectrophotometric assay for peroxidase, based on direct measurement of a soluble aniline diazo substrate, is introduced. In addition to the routine assays, this method can be used in comprehensive kinetics studies. 4-[(4-Sulfophenyl)azo]aniline (λmax = 390 nm, ɛ = 32 880 M(-1) cm(-1) at pH 4.5 to 9) was introduced for routine assay of peroxidase. This compound is commercially available and is indexed as a food dye. Using this method, a detection limit of 0.05 nmol mL(-1) was achieved for peroxidase.
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Affiliation(s)
- Fatemeh Mirazizi
- a Department of Chemistry , Islamic Azad University of Mashhad , Mashhad , The Islamic Republic of Iran
| | - Azita Bahrami
- b National Institute for Genetic Engineering and Biotechnology , Tehran , The Islamic Republic of Iran
| | - Kamahldin Haghbeen
- c Biochemistry and Biophysics, National Institute for Genetic Engineering and Biotechnology , Tehran , The Islamic Republic of Iran
| | - Hossein Shahbani Zahiri
- d National Institute for Genetic Engineering and Biotechnology , Tehran , The Islamic Republic of Iran
| | - Mehdi Bakavoli
- e Department of Chemistry , Ferdowsi University of Mashhad , Mashhad , The Islamic Republic of Iran , and
| | - Raymond L Legge
- f Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario , Canada
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26
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Hu WP, Cao GD, Zhu JH, Li JZ, Liu XH. Naturally occurring Batatasins and their derivatives as α-glucosidase inhibitors. RSC Adv 2015. [DOI: 10.1039/c5ra15328j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Naturally occurred Batatasins and derivatives displayed remarkable inhibitory effects against α-glucosidase, which provide promising chemical scaffolds for antidiabetic drug development.
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Affiliation(s)
- Wei-ping Hu
- Institute of Environmental and Analytical Sciences
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Guo-dong Cao
- Institute of Environmental and Analytical Sciences
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Jin-hua Zhu
- Institute of Environmental and Analytical Sciences
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
| | - Jia-zhong Li
- School of Pharmacy
- Lanzhou University
- Lanzhou
- China
| | - Xiu-hua Liu
- Institute of Environmental and Analytical Sciences
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
- China
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27
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Chen Y, Liu Y, Li X, Zhang J, Li G. Lignin Interacting with α-glucosidase and its Inhibitory Effect on the Enzymatic Activity. FOOD BIOPHYS 2014. [DOI: 10.1007/s11483-014-9383-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Liu M, Yin H, Liu G, Dong J, Qian Z, Miao J. Xanthohumol, a prenylated chalcone from beer hops, acts as an α-glucosidase inhibitor in vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5548-5554. [PMID: 24897556 DOI: 10.1021/jf500426z] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Xanthohumol (XN) is a unique prenylated flavonoid in hops (Humulus lupulus L.) and beer. XN alleviates hyperglycemia and has potential usage in the treatment of type 2 diabetes. In the present study, a series of in vitro experiments were performed to investigate whether XN was an effective inhibitor of α-glucosidase. The results showed that XN inhibited α-glucosidase in a reversible and noncompetitive manner, with an IC50 value of 8.8 μM and that XN inhibited the release of glucose from the maltose in the apical side of the Caco-2 cell monolayer. Fluorescence and circular dichroism spectra results indicated that XN directly bound to α-glucosidase and induced minor conformational changes of the enzyme. These results demonstrated that XN is a promising α-glucosidase inhibitor, which therefore could be used as functional food to alleviate postprandial hyperglycemia and as a potential candidate for the development of an antidiabetic agent.
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Affiliation(s)
- Ming Liu
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, China
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29
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He Y, Wang XB, Fan BY, Kong LY. Honokiol trimers and dimers via biotransformation catalyzed by Momordica charantia peroxidase: Novel and potent α-glucosidase inhibitors. Bioorg Med Chem 2014; 22:762-71. [DOI: 10.1016/j.bmc.2013.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/03/2013] [Accepted: 12/05/2013] [Indexed: 12/21/2022]
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30
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Yan J, Zhang G, Pan J, Wang Y. α-Glucosidase inhibition by luteolin: kinetics, interaction and molecular docking. Int J Biol Macromol 2013; 64:213-23. [PMID: 24333230 DOI: 10.1016/j.ijbiomac.2013.12.007] [Citation(s) in RCA: 220] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/02/2013] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
Abstract
α-Glucosidase is a critical associated enzyme with type 2 diabetes mellitus in humans. Inhibition of α-glucosidase is important due to the potential effect of down regulating glucose absorption in patients. In this study, the inhibitory activity of flavone luteolin on α-glucosidase and their interaction mechanism were investigated by multispectroscopic methods along with molecular docking technique. It was found that luteolin reversibly inhibited α-glucosidase in a noncompetitive manner with an IC50 value of (1.72 ± 0.05) × 10(-4) mol L(-1), and the inhibition followed a multi-phase kinetic process with a first-order reaction. Luteolin had a strong ability to quench the intrinsic fluorescence of α-glucosidase through a static quenching procedure. The positive values of enthalpy and entropy change suggested that the binding of luteolin to α-glucosidase was driven mainly by hydrophobic interactions, and the binding distance was estimated to be 4.56 nm. Analysis of synchronous fluorescence, circular dichroism, and Fourier transform infrared spectra demonstrated that the binding of luteolin to α-glucosidase induced rearrangement and conformational changes of the enzyme. Moreover, the results obtained from molecular docking indicated that luteolin had a high affinity close to the active site pocket of α-glucosidase and indirectly inhibited the catalytic activity of the enzyme.
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Affiliation(s)
- Jiakai Yan
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China.
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China
| | - Yajie Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, 235, Nanjing East Road, Nanchang 330047, Jiangxi, China
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