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Aulifa DL, Amirah SR, Rahayu D, Megantara S, Muchtaridi M. Pharmacophore Modeling and Binding Affinity of Secondary Metabolites from Angelica keiskei to HMG Co-A Reductase. Molecules 2024; 29:2983. [PMID: 38998937 PMCID: PMC11243442 DOI: 10.3390/molecules29132983] [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: 05/31/2024] [Accepted: 06/18/2024] [Indexed: 07/14/2024] Open
Abstract
Statins are cholesterol-lowering drugs with a mechanism of inhibiting 3-hydroxy-3-methylglutaryl-CoA reductase, but long-term use can cause side effects. An example of a plant capable of reducing cholesterol levels is Angelica keiskei (ashitaba). Therefore, this study aimed to obtain suitable compounds with inhibitory activity against the HMG-CoA reductase enzyme from ashitaba through in silico tests. The experiment began with screening and pharmacophore modeling, followed by molecular docking on ashitaba's compounds, statins groups, and the native ligand was (3R,5R)-7-[4-(benzyl carbamoyl)-2-(4-fluorophenyl)-5-(1-methylethyl)-1H-imidazole-1-yl]-3,5-dihydroxyheptanoic acid (4HI). Based on the results of the molecular docking simulations, 15 hit compounds had a small binding energy (ΔG). Pitavastatin, as the comparator drug (ΔG = -8.24 kcal/mol; Ki = 2.11 µM), had a lower ΔG and inhibition constant (Ki) than the native ligand 4HI (ΔG = -7.84 kcal/mol; Ki = 7.96µM). From ashitaba's compounds, it was found that 4'-O-geranylnaringenin, luteolin, isobavachalcone, dorsmannin A, and 3'-carboxymethyl-4,2'-dihydroxy-4'-methoxychalcone have low ΔG of below -6 kcal/mol. The lowest ΔG value was found in 3'-carboxymethyl-4,2'-dihydroxy-4'-methoxy chalcone with a ΔG of -6.67 kcal/mol and Ki value of 16.66 µM, which was lower than the ΔG value of the other comparator drugs, atorvastatin (ΔG = -5.49 kcal/mol; Ki = 1148.17 µM) and simvastatin (ΔG = -6.50 kcal/mol; Ki = 22.34 µM). This compound also binds to the important amino acid residues, including ASN755D, ASP690C, GLU559D, LYS735D, LYS691C, and SER684C, through hydrogen bonds. Based on the results, the compound effectively binds to six important amino acids with good binding affinity and only requires a small concentration to reduce half of the enzyme activity.
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Affiliation(s)
- Diah Lia Aulifa
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
- Study Center for Development of Pharmaceutical Preparations, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
| | - Siti Rafa Amirah
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
| | - Driyanti Rahayu
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
| | - Sandra Megantara
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
| | - Muchtaridi Muchtaridi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia
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Mezgebe K, Melaku Y, Mulugeta E. Synthesis and Pharmacological Activities of Chalcone and Its Derivatives Bearing N-Heterocyclic Scaffolds: A Review. ACS OMEGA 2023; 8:19194-19211. [PMID: 37305270 PMCID: PMC10249103 DOI: 10.1021/acsomega.3c01035] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/05/2023] [Indexed: 06/13/2023]
Abstract
The incorporation of heterocyclic moieties into the standard chemical structure with a biologically active scaffold has become of crucial practice for the construction of pharmacologically potent candidates in the drug arena. Currently, numerous kinds of chalcones and their derivatives have been synthesized using the incorporation of heterocyclic scaffolds, especially chalcones bearing heterocyclic moieties that display improved efficiency and potential for drug production in pharmaceutical sectors. The current Review focuses on recent advances in the synthetic approaches and pharmacological activities such as antibacterial, antifungal, antitubercular, antioxidant, antimalarial, anticancer, anti-inflammatory, antigiardial, and antifilarial activities of chalcone derivatives incorporating N-heterocyclic moieties at either the A-ring or B-ring.
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Ran Q, Tao L, Zhou X, Li SM, Yuan CM, Yang S, Zhou K. Geranylation of Chalcones by a Fungal Aromatic Prenyltransferase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:4675-4682. [PMID: 36893066 DOI: 10.1021/acs.jafc.2c08743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Geranylated chalcones mainly exist in plants, and many of them have attracted attention because of their diverse pharmacological and biological activities. Herein, we report geranylation of eight chalcones by the Aspergillus terreus aromatic prenyltransferase AtaPT. Ten new mono-geranylated enzyme products (1G-5G, 6G1, 6G2, 7G, 8G1, and 8G2) were obtained. Most of the products are C-geranylated products with prenyl moieties at ring B. In comparison, plant aromatic prenyltransferases usually catalyze the geranylation at ring A. Therefore, AtaPT can be used complementarily for chalcone geranylation to increase the structural diversity of small molecules. In addition, seven compounds (1G, 3G, 4G, 6G1, 7G, 8G1, and 8G2) exhibited a potential inhibitory effect on α-glucosidase with the IC50 values ranging from 45.59 ± 3.48 to 82.85 ± 2.15 μg/mL. Among them, compound 7G (45.59 ± 3.48 μg/mL) was the most potential α-glucosidase inhibitor, which is about seven times stronger than the positive control acarbose (IC50 = 346.63 ± 15.65 μg/mL).
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Affiliation(s)
- Qianqian Ran
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Linlan Tao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
| | - Xiang Zhou
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China
| | - Shu-Ming Li
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, Robert-Koch-Str. 4, Marburg 35037, Germany
| | - Chun-Mao Yuan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
| | - Song Yang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Centre for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China
| | - Kang Zhou
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, China
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Rajendran G, Bhanu D, Aruchamy B, Ramani P, Pandurangan N, Bobba KN, Oh EJ, Chung HY, Gangadaran P, Ahn BC. Chalcone: A Promising Bioactive Scaffold in Medicinal Chemistry. Pharmaceuticals (Basel) 2022; 15:ph15101250. [PMID: 36297362 PMCID: PMC9607481 DOI: 10.3390/ph15101250] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 09/26/2022] [Accepted: 10/01/2022] [Indexed: 11/16/2022] Open
Abstract
Chalcones are a class of privileged scaffolds with high medicinal significance due to the presence of an α,β-unsaturated ketone functionality. Numerous functional modifications of chalcones have been reported, along with their pharmacological behavior. The present review aims to summarize the structures from natural sources, synthesis methods, biological characteristics against infectious and non-infectious diseases, and uses of chalcones over the past decade, and their structure–activity relationship studies are detailed in depth. This critical review provides guidelines for the future design and synthesis of various chalcones. In addition, this could be highly supportive for medicinal chemists to develop more promising candidates for various infectious and non-infectious diseases.
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Affiliation(s)
- Gayathri Rajendran
- Dhanvanthri Laboratory, Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
- Center of Excellence in Advanced Materials & Green Technologies (CoE–AMGT), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
| | - Deepu Bhanu
- Dhanvanthri Laboratory, Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
- Center of Excellence in Advanced Materials & Green Technologies (CoE–AMGT), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
| | - Baladhandapani Aruchamy
- Dhanvanthri Laboratory, Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
- Center of Excellence in Advanced Materials & Green Technologies (CoE–AMGT), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
| | - Prasanna Ramani
- Dhanvanthri Laboratory, Department of Sciences, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
- Center of Excellence in Advanced Materials & Green Technologies (CoE–AMGT), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India
- Correspondence: (P.R.); (B.-C.A.)
| | - Nanjan Pandurangan
- Department of Sciences, Amrita School of Arts and Sciences, Mysuru Campus, Amrita Vishwa Vidyapeetham, Mysuru 570026, India
| | - Kondapa Naidu Bobba
- Department of Radiology and Biomedical Imaging, University of California (San Francisco), San Francisco, CA 94143, USA
| | - Eun Jung Oh
- Department of Plastic and Reconstructive Surgery, CMRI, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea
| | - Ho Yun Chung
- Department of Plastic and Reconstructive Surgery, CMRI, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea
- BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Prakash Gangadaran
- BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu 41944, Korea
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea
| | - Byeong-Cheol Ahn
- BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu 41944, Korea
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea
- Correspondence: (P.R.); (B.-C.A.)
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Zhai J, Sun B, Sang F. Progress of isolation, chemical synthesis and biological activities of natural chalcones bearing 2-hydroxy-3-methyl-3-butenyl group. Front Chem 2022; 10:964089. [PMID: 36046729 PMCID: PMC9420912 DOI: 10.3389/fchem.2022.964089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
Chalcones have a three-carbon α,β-unsaturated carbonyl system composed of two phenolic rings. Many chalcones have shown broad spectrum of biological activities with clinical potentials against various diseases. They are usually abundant in seeds, fruit skin, bark and flowers of most edible plants. Among them, chalcones bearing 2-hydroxy-3-methyl-3-butenyl (HMB) group have been reported several times in the past few decades due to their novel scaffolds and numerous interesting biological activities. In this paper, we reviewed the isolation of twelve natural chalcones and a natural chalcone-type compound bearing 2-hydroxy-3-methyl-3-butenyl group discovered so far, and reviewed their synthesis methods and biological activities reported in the literature. We anticipate that this review will inspire further research of natural chalcones.
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Affiliation(s)
- Jiadai Zhai
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Bingxia Sun
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
| | - Feng Sang
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
- *Correspondence: Feng Sang,
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Zhou K, Yang S, Li SM. Naturally occurring prenylated chalcones from plants: structural diversity, distribution, activities and biosynthesis. Nat Prod Rep 2021; 38:2236-2260. [PMID: 33972962 DOI: 10.1039/d0np00083c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Covering: up to July 2020Naturally occurring chalcones carrying up to three modified or unmodified C5-, C10-, and C15-prenyl moieties on both rings A and B as well as at the α- and β-carbons are widely distributed in plants of the families of Fabaceae, Moraceae, Zingiberaceae and Cannabaceae. Xanthohumol and isobavachalcone being the most investigated representatives, exhibit diverse and remarkable biological and pharmacological activities. The present review deals with their structural characters, biological activities and occurrence in the plant kingdom. Biosynthesis of prenylated chalcones and metabolism of xanthohumol are also discussed.
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Affiliation(s)
- Kang Zhou
- Guizhou University, School of Pharmaceutical Sciences, Huaxi Avenue 2708, Guiyang, 550025, China
| | - Song Yang
- Guizhou University, Key Laboratory of Green Pesticide & Agricultural Bioengineering, Ministry of Education, Centre for R&D of Fine Chemicals, Huaxi Avenue 2708, Guiyang, 550025, China
| | - Shu-Ming Li
- Philipps-Universität Marburg, Fachbereich Pharmazie, Institut für Pharmazeutische Biologie und Biotechnologie, Robert-Koch-Straße 4, 35037, Marburg, Germany.
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Mohamed MFA, Abuo-Rahma GEDA. Molecular targets and anticancer activity of quinoline-chalcone hybrids: literature review. RSC Adv 2020; 10:31139-31155. [PMID: 35520674 PMCID: PMC9056499 DOI: 10.1039/d0ra05594h] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/30/2020] [Indexed: 01/01/2023] Open
Abstract
α,β-Unsaturated chalcone moieties and quinoline scaffolds play an important role in medicinal chemistry, especially in the identification and development of potential anticancer agents. The multi-target approach or hybridization is considered as a promising strategy in drug design and discovery. Hybridization may improve the affinity and potency while simultaneously decreasing the resistance and/or side effects. The conjugation of quinolines with chalcones has been a promising approach to the identification of potential anticancer agents. Most of these hybrids showed anticancer activities through the inhibition of tubulin polymerization, different kinases, topoisomerases, or by affecting DNA cleavage activity. Accordingly, this class of compounds can be classified based on their molecular modes of action. In this article, the quinolone-chalcone hybrids with potential anticancer activity have been reviewed. This class of compounds might be helpful for the design, discovery and development of new and potential multi-target anticancer agents or drugs.
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Affiliation(s)
- Mamdouh F A Mohamed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University 82524 Sohag Egypt (+20)-1018384461
| | - Gamal El-Din A Abuo-Rahma
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University Minia 61519 Egypt +201003069431
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Zhang L, Jiang Y, Pang X, Hua P, Gao X, Li Q, Li Z. Simultaneous Optimization of Ultrasound-Assisted Extraction for Flavonoids and Antioxidant Activity of Angelica keiskei Using Response Surface Methodology (RSM). Molecules 2019; 24:E3461. [PMID: 31554203 PMCID: PMC6804174 DOI: 10.3390/molecules24193461] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/06/2019] [Accepted: 09/18/2019] [Indexed: 02/02/2023] Open
Abstract
Angelica keiskei Koidzumi (A. keiskei), as a Japanese edible herbal plant, enjoys a variety of biological activities due to the presence of numerous active compounds, especially flavonoids. This study aims for the optimization of ultrasound-assisted extraction (UAE) for flavonoids in A. keiskei and their antioxidant activity by using the response surface methodology (RSM). Single-factor experiments and a four-factor three-level Box-Behnken design (BBD) were performed to explore the effects of the following parameters on flavonoid extraction and antioxidant activity evaluation: ultrasonic temperature (X1), ultrasonic time (X2), ethanol concentration (X3) and liquid-solid ratio (X4). The optimum conditions of the combination of total flavonoid content (TFC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (DPPH-RSC) and ferric-reducing antioxidant power (FRAP) were as follows: X1 = 80 °C, X2 = 4 min, X3 = 78%, X4 = 35 mL/g, respectively. The experimental results provide a theoretical basis for the extensive utilization of A. keiskei and flavonoids extraction from A. keiskei as a potential source of antioxidants.
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Affiliation(s)
- Lei Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
| | - Yuhuan Jiang
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Xuening Pang
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Puyue Hua
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Xiang Gao
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Qun Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
| | - Zichao Li
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
- Qingdao Balanson Biotech Co., Ltd., Qingdao 266071, China.
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Lee JH, Mei HC, Kuo IC, Lee TH, Chen YH, Lee CK. Characterizing Tyrosinase Modulators from the Roots of Angelica keiskei Using Tyrosinase Inhibition Assay and UPLC-MS/MS as the Combinatorial Novel Approach. Molecules 2019; 24:molecules24183297. [PMID: 31510069 PMCID: PMC6767278 DOI: 10.3390/molecules24183297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/07/2019] [Accepted: 09/08/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, an in vitro tyrosinase inhibition assay in combination with ultra performance liquid chromatography-orbitrap mass spectrometry (UPLC-orbitrap-MS) was developed for the rapid screening and identification of tyrosinase modulators from roots of Angelica keiskei. Of the 15 candidates considered, nine chalcones, xanthoangelols (1), B (2), D (3), E (4), G (5), H (6), 4-hydroxyderricin (7), xanthokeismin B (8) and (2E)-1-[4-hydroxy-2-(2-hydroxy-2-propanyl)-2,3-dihydro-1-benzofuran-7-yl]-3-(4-hydroxyphenyl)-2-propen-1-one (9), five coumarins, umbelliferone (10), selinidin (11), isopimpinellin (12), phellopterin (13) and xanthyletin (14), and one other compound, ashitabaol A (15), were distinguished between the test samples and the controls with statistical significance, and the structure of each compound was determined by comparing with in-house standards and the literature. Among these, six compounds, xanthoangelol (1), xanthoangelol D (3), xanthoangelol H (6), 4-hydroxyderricin (7), laserpitin (16) and isolaserpitin (17), were isolated from roots of A. keiskei. Of the compounds isolated, compounds 1, 7 and 16 were subjected to tyrosinase inhibitory assay, and the IC50 values were 15.87 ± 1.21, 60.14 ± 2.29 and >100 μM, respectively. The present study indicated that the combination of in vitro tyrosinase inhibition assay coupled with UPLC-MS/MS could be widely applied to the rapid screening of active substances from various natural resources.
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Affiliation(s)
- Jia-Hao Lee
- School of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan.
| | - Hui-Ching Mei
- Department of Science Education, National Taipei University of Education, Taipei 10671, Taiwan.
| | - I-Chih Kuo
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
| | - Tzong-Huei Lee
- Institute of Fisheries Science, National Taiwan University, Taipei 10617, Taiwan.
| | - Yu-Hsin Chen
- Taichung District Agricultural Research and Extension Station, Council of Agriculture, Executive Yuan, Taichung 42081, Taiwan.
| | - Ching-Kuo Lee
- School of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan.
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Zhang XW, Ye YS, Xia F, Yang XW, Xu G. Diverse Polyphenols from Hypericum faberi. NATURAL PRODUCTS AND BIOPROSPECTING 2019; 9:215-221. [PMID: 31073808 PMCID: PMC6538727 DOI: 10.1007/s13659-019-0206-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/11/2019] [Indexed: 06/08/2023]
Abstract
Six new polyphenols with different isoprenylated xanthones, isoprenylated acylphloroglucinols, and chromone architectures, hyperfaberols A-F (1-6), were isolated from the whole plants of Hypericum faberi along with seven other related known compounds. In which hyperfaberols A/B (1/2) and 12-13 were isoprenylated xanthones, hyperfaberols C-E (3-5) and 8-11 were seven isoprenylated acylphloroglucinol derivatives, while 6-7 were two chromones. Their structures were elucidated by comprehensive analysis of their spectroscopic data as well as detailed comparison with the literature data. Compounds 1 and 11 showed cytotoxities against the human esophageal cancer cell line (ECA-109) and the pancreatic tumor cell line (PANC-1) in vitro, respectively.
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Affiliation(s)
- Xin-Wen Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| | - Yan-Song Ye
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Fan Xia
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China
| | - Xing-Wei Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, People's Republic of China
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Kaennakam S, Sukandar ER, Siripong P, Rassamee K, Tip-Pyang S. Veluflavanones A-P, Cytotoxic Geranylated Flavanones from Dalbergia velutina Stems. JOURNAL OF NATURAL PRODUCTS 2019; 82:276-282. [PMID: 30719909 DOI: 10.1021/acs.jnatprod.8b00688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Sixteen new geranylated flavanones, named veluflavanones A-P (1-16), and a known analogue (17), were isolated from Dalbergia velutina. The chemical structures of 1-17, as well as their absolute configurations, were determined by spectroscopic analysis and experimental ECD data. All isolated compounds were tested for their cytotoxicity against five human cancer cell lines. Compound 9 showed cytotoxicity toward KB, HeLa S3, and MCF-7 cells with IC50 values of 9.9, 8.1, and 10.0 μM, respectively. In addition, compounds 10, 11, 14, and 16 exhibited selective cytotoxicity against HeLa S3 cells with IC50 values of 6.6-9.9 μM.
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Affiliation(s)
- Sutin Kaennakam
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science , Chulalongkorn University , Bangkok , Thailand , 10330
| | - Edwin Risky Sukandar
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science , Chulalongkorn University , Bangkok , Thailand , 10330
| | - Pongpun Siripong
- Natural Products Research Section , National Cancer Institute , Bangkok , Thailand , 10400
| | - Kitiya Rassamee
- Natural Products Research Section , National Cancer Institute , Bangkok , Thailand , 10400
| | - Santi Tip-Pyang
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science , Chulalongkorn University , Bangkok , Thailand , 10330
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12
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Mizar P, Arya R, Kim T, Cha S, Ryu KS, Yeo WS, Bae T, Kim DW, Park KH, Kim KK, Lee SS. Total Synthesis of Xanthoangelol B and Its Various Fragments: Toward Inhibition of Virulence Factor Production of Staphylococcus aureus. J Med Chem 2018; 61:10473-10487. [PMID: 30388007 PMCID: PMC6326535 DOI: 10.1021/acs.jmedchem.8b01012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
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As
an alternative strategy to fight antibiotic resistance, two-component
systems (TCSs) have emerged as novel targets. Among TCSs, master virulence
regulators that control the expression of multiple virulence factors
are considered as excellent antivirulence targets. In Staphylococcus
aureus, virulence factor expression is tightly regulated
by a few master regulators, including the SaeRS TCS. In this study,
we used a SaeRS GFP-reporter system to screen natural compound inhibitors
of SaeRS, and identified xanthoangelol B 1, a prenylated
chalcone from Angelica keiskei as a hit. We have
synthesized 1 and its derivative PM-56 and
shown that 1 and PM-56 both had excellent
inhibitory potency against the SaeRS TCS, as demonstrated by various in vitro and in vivo experiments. As a
mode of action, 1 and PM-56 were shown to
bind directly to SaeS and inhibit its histidine kinase activity, which
suggests a possibility of a broad spectrum inhibitor of histidine
kinases.
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Affiliation(s)
- Pushpak Mizar
- Chemistry, Highfield Campus , University of Southampton , Southampton , SO17 1BJ , U.K
| | - Rekha Arya
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Truc Kim
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Soyoung Cha
- Protein Structure Research Group , Korea Basic Science Institute , 162 Yeongudanji-Ro, Ochang-Eup , Cheongju-Si , Chungcheongbuk-Do 28119 , Republic of Korea
| | - Kyoung-Seok Ryu
- Protein Structure Research Group , Korea Basic Science Institute , 162 Yeongudanji-Ro, Ochang-Eup , Cheongju-Si , Chungcheongbuk-Do 28119 , Republic of Korea
| | - Won-Sik Yeo
- Department of Microbiology and Immunology , Indiana University-School of Medicine-Northwest , Gary , Indiana 46408 , United States
| | - Taeok Bae
- Department of Microbiology and Immunology , Indiana University-School of Medicine-Northwest , Gary , Indiana 46408 , United States
| | - Dae Wook Kim
- Division of Applied Life Science (BK21 Plus), IALS , Gyeongsang National University , Jinju 52828 , Republic of Korea
| | - Ki Hun Park
- Division of Applied Life Science (BK21 Plus), IALS , Gyeongsang National University , Jinju 52828 , Republic of Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology, Institute for Antimicrobial Resistance and Therapeutics, Samsung Medical Center , Sungkyunkwan University School of Medicine , Suwon 16419 , Republic of Korea
| | - Seung Seo Lee
- Chemistry, Highfield Campus , University of Southampton , Southampton , SO17 1BJ , U.K
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13
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Kil YS, Park J, Jafari M, Woo HA, Seo EK. Minor phenolics from Angelica keiskei and their proliferative effects on Hep3B cells. Bioorg Med Chem Lett 2017; 27:3065-3070. [PMID: 28571822 DOI: 10.1016/j.bmcl.2017.05.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 05/11/2017] [Accepted: 05/17/2017] [Indexed: 11/24/2022]
Abstract
A new coumarin, (-)-cis-(3'R,4'R)-4'-O-angeloylkhellactone-3'-O-β-d-glucopyranoside (1) and two new chalcones, 3'-[(2E)-5-carboxy-3-methyl-2-pentenyl]-4,2',4'-trihydroxychalcone (4) and (±)-4,2',4'-trihydroxy-3'-{2-hydroxy-2-[tetrahydro-2-methyl-5-(1-methylethenyl)-2-furanyl]ethyl}chalcone (5) were isolated from the aerial parts of Angelica keiskei (Umbelliferae), together with six known compounds: (R)-O-isobutyroyllomatin (2), 3'-O-methylvaginol (3), (-)-jejuchalcone F (6), isoliquiritigenin (7), davidigenin (8), and (±)-liquiritigenin (9). The structures of the new compounds were determined by interpretation of their spectroscopic data including 1D and 2D NMR data. All known compounds (2, 3, and 6-9) were isolated as constituents of A. keiskei for the first time. To identify novel hepatocyte proliferation inducer for liver regeneration, 1-9 were evaluated for their cell proliferative effects using a Hep3B human hepatoma cell line. All isolates exhibited cell proliferative effects compared to untreated control (DMSO). Cytoprotective effects against oxidative stress induced by glucose oxidase were also examined on Hep3B cells and mouse fibroblast NIH3T3 cells and all compounds showed significant dose-dependent protection against oxidative stress.
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Affiliation(s)
- Yun-Seo Kil
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea.
| | - Jiyoung Park
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea.
| | - Mahtab Jafari
- Department of Pharmaceutical Sciences, University of California, Irvine, CA 92697, United States.
| | - Hyun Ae Woo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea.
| | - Eun Kyoung Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea.
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14
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Zhuang C, Zhang W, Sheng C, Zhang W, Xing C, Miao Z. Chalcone: A Privileged Structure in Medicinal Chemistry. Chem Rev 2017; 117:7762-7810. [PMID: 28488435 PMCID: PMC6131713 DOI: 10.1021/acs.chemrev.7b00020] [Citation(s) in RCA: 757] [Impact Index Per Article: 108.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Privileged structures have been widely used as an effective template in medicinal chemistry for drug discovery. Chalcone is a common simple scaffold found in many naturally occurring compounds. Many chalcone derivatives have also been prepared due to their convenient synthesis. These natural products and synthetic compounds have shown numerous interesting biological activities with clinical potentials against various diseases. This review aims to highlight the recent evidence of chalcone as a privileged scaffold in medicinal chemistry. Multiple aspects of chalcone will be summarized herein, including the isolation of novel chalcone derivatives, the development of new synthetic methodologies, the evaluation of their biological properties, and the exploration of the mechanisms of action as well as target identification. This review is expected to be a comprehensive, authoritative, and critical review of the chalcone template to the chemistry community.
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Affiliation(s)
- Chunlin Zhuang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Wen Zhang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Chunquan Sheng
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Wannian Zhang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
- School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Chengguo Xing
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, 1345 Center Drive,
Gainesville, Florida 32610, United States
| | - Zhenyuan Miao
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
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15
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Xia J, Feng B, Shao Q, Yuan Y, Wang XS, Chen N, Wu S. Virtual Screening against Phosphoglycerate Kinase 1 in Quest of Novel Apoptosis Inhibitors. Molecules 2017. [PMID: 28635653 PMCID: PMC5720137 DOI: 10.3390/molecules22061029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Inhibition of apoptosis is a potential therapy to treat human diseases such as neurodegenerative disorders (e.g., Parkinson’s disease), stroke, and sepsis. Due to the lack of druggable targets, it remains a major challenge to discover apoptosis inhibitors. The recent repositioning of a marketed drug (i.e., terazosin) as an anti-apoptotic agent uncovered a novel target (i.e., human phosphoglycerate kinase 1 (hPgk1)). In this study, we developed a virtual screening (VS) pipeline based on the X-ray structure of Pgk1/terazosin complex and applied it to a screening campaign for potential anti-apoptotic agents. The hierarchical filters in the pipeline (i.e., similarity search, a pharmacophore model, a shape-based model, and molecular docking) rendered 13 potential hits from Specs chemical library. By using PC12 cells (exposed to rotenone) as a cell model for bioassay, we first identified that AK-918/42829299, AN-465/41520984, and AT-051/43421517 were able to protect PC12 cells from rotenone-induced cell death. Molecular docking suggested these hit compounds were likely to bind to hPgk1 in a similar mode to terazosin. In summary, we not only present a versatile VS pipeline for potential apoptosis inhibitors discovery, but also provide three novel-scaffold hit compounds that are worthy of further development and biological study.
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Affiliation(s)
- Jie Xia
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of New Drug Research and Development, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Bo Feng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of New Drug Research and Development, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Qianhang Shao
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Yuhe Yuan
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Xiang Simon Wang
- Molecular Modeling and Drug Discovery Core Laboratory for District of Columbia Center for AIDS Research (DC CFAR), Department of Pharmaceutical Sciences, College of Pharmacy, Howard University, Washington, DC 20059, USA.
| | - Naihong Chen
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Song Wu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of New Drug Research and Development, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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16
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Dayalan Naidu S, Dinkova-Kostova AT. Regulation of the mammalian heat shock factor 1. FEBS J 2017; 284:1606-1627. [PMID: 28052564 DOI: 10.1111/febs.13999] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/17/2016] [Accepted: 01/03/2017] [Indexed: 12/21/2022]
Abstract
Living organisms are endowed with the capability to tackle various forms of cellular stress due to the presence of molecular chaperone machinery complexes that are ubiquitous throughout the cell. During conditions of proteotoxic stress, the transcription factor heat shock factor 1 (HSF1) mediates the elevation of heat shock proteins, which are crucial components of the chaperone complex machinery and function to ameliorate protein misfolding and aggregation and restore protein homeostasis. In addition, HSF1 orchestrates a versatile transcriptional programme that includes genes involved in repair and clearance of damaged macromolecules and maintenance of cell structure and metabolism, and provides protection against a broad range of cellular stress mediators, beyond heat shock. Here, we discuss the structure and function of the mammalian HSF1 and its regulation by post-translational modifications (phosphorylation, sumoylation and acetylation), proteasomal degradation, and small-molecule activators and inhibitors.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Division of Cancer Research, School of Medicine, Jacqui Wood Cancer Centre, University of Dundee, UK
| | - Albena T Dinkova-Kostova
- Division of Cancer Research, School of Medicine, Jacqui Wood Cancer Centre, University of Dundee, UK
- Department of Pharmacology and Molecular Sciences, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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17
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Kil YS, Pham ST, Seo EK, Jafari M. Angelica keiskei, an emerging medicinal herb with various bioactive constituents and biological activities. Arch Pharm Res 2017; 40:655-675. [PMID: 28439780 PMCID: PMC7090720 DOI: 10.1007/s12272-017-0892-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 01/30/2017] [Indexed: 01/14/2023]
Abstract
Angelica keiskei (Miq.) Koidz. (Umbelliferae) has traditionally been used to treat dysuria, dyschezia, and dysgalactia as well as to restore vitality. Recently, the aerial parts of A. keiskei have been consumed as a health food. Various flavonoids, coumarins, phenolics, acetylenes, sesquiterpene, diterpene, and triterpenes were identified as the constituents of A. keiskei. The crude extracts and pure constituents were proven to inhibit tumor growth and ameliorate inflammation, obesity, diabetics, hypertension, and ulcer. The extract also showed anti-thrombotic, anti-oxidative, anti-hyperlipidemic, anti-viral, and anti-bacterial activities. This valuable herb needs to be further studied and developed not only to treat these human diseases but also to improve human health. Currently A. keiskei is commercialized as a health food and additives in health drinks. This article presents a comprehensive review of A. keiskei and its potential place in the improvement of human health.
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Affiliation(s)
- Yun-Seo Kil
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Korea
| | - Sally T Pham
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, 92697, USA
| | - Eun Kyoung Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Korea.
| | - Mahtab Jafari
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, 92697, USA.
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18
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Zhang X, Chen C, Li Y, Chen D, Dong L, Na W, Wu C, Zhang J, Li Y. Tadehaginosides A-J, Phenylpropanoid Glucosides from Tadehagi triquetrum, Enhance Glucose Uptake via the Upregulation of PPARγ and GLUT-4 in C2C12 Myotubes. JOURNAL OF NATURAL PRODUCTS 2016; 79:1249-1258. [PMID: 27100993 DOI: 10.1021/acs.jnatprod.5b00820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ten new phenylpropanoid glucosides, tadehaginosides A-J (1-10), and the known compound tadehaginoside (11) were obtained from Tadehagi triquetrum. These phenylpropanoid glucosides were structurally characterized through extensive physical and chemical analyses. Compounds 1 and 2 represent the first set of dimeric derivatives of tadehaginoside with an unusual bicyclo[2.2.2]octene skeleton, whereas compounds 3 and 4 contain a unique cyclobutane basic core in their carbon scaffolds. The effects of these compounds on glucose uptake in C2C12 myotubes were evaluated. Compounds 3-11, particularly 4, significantly increased the basal and insulin-elicited glucose uptake. The results from molecular docking, luciferase analyses, and ELISA indicated that the increased glucose uptake may be due to increases in peroxisome proliferator-activated receptor γ (PPARγ) activity and glucose transporter-4 (GLUT-4) expression. These results indicate that the isolated phenylpropanoid glucosides, particularly compound 4, have the potential to be developed into antidiabetic compounds.
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Affiliation(s)
- Xiaopo Zhang
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Changyu Chen
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Yonghui Li
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Deli Chen
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing 100193, People's Republic of China
| | - Lin Dong
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Wei Na
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Chongming Wu
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences , Beijing 100193, People's Republic of China
| | - Junqing Zhang
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
| | - Youbin Li
- School of Pharmaceutical Science, Hainan Medical University , Hainan 571199, People's Republic of China
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19
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Kil YS, Kwon J, Lee D, Seo EK. Three New Chalcones from the Aerial Parts ofAngelica keiskei. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yun-Seo Kil
- Graduate School of Pharmaceutical Sciences; College of Pharmacy; Ewha Womans University; Seoul 03760 Korea
| | - Jaeyoung Kwon
- Department of Biosystems and Biotechnology; College of Life Sciences and Biotechnology; Korea University; Seoul 02841 Korea
| | - Dongho Lee
- Department of Biosystems and Biotechnology; College of Life Sciences and Biotechnology; Korea University; Seoul 02841 Korea
| | - Eun Kyoung Seo
- Graduate School of Pharmaceutical Sciences; College of Pharmacy; Ewha Womans University; Seoul 03760 Korea
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