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Kaplaner E, Aydoğmuş-Öztürk F, Öztürk M, Akata I, Duru ME. Anatoluin A and B isolated from medicinal Tricholoma anatolicum are new cytotoxic ergostanoids against the most common cancers. Nat Prod Res 2023; 37:3787-3797. [PMID: 36480815 DOI: 10.1080/14786419.2022.2153360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 11/21/2022] [Accepted: 11/26/2022] [Indexed: 12/13/2022]
Abstract
Tricholoma anatolicum is an edible mushroom from the matsutake group growing under Cedar trees. Bioactivity-guided fractionation of Tricholoma anatolicum afforded two new (1 and 2), three known ergosterols (3-6), and four known (6-9) compounds. Structures were identified as anatoluin A (1), anatoluin B (2), 5α,6α-epoxy-ergosta-7,22-dien,3β-ol (3), ergosterol-endoperoxide (4), ergosterol,3β-ol (5), 3,5-dihydroxyfuran-2(5H)-one (6), mannitol (7), turanose (8), fumaric acid (9) using spectroscopic techniques. The cytotoxic activity of extract and isolated compounds was performed using MTT assay against MCF7, HT29, H1299, and HeLa cancerous cell lines while toxicity against PDF and L929 fibroblast healthy cell lines. The lipid peroxidation inhibitory and ABTS•+ scavenging activities were used to determine antioxidant activity. The polar extracts exhibited significant cytotoxic activity. The more perfect is that the extracts and isolated compounds (1-5) were inactive against PDF and L929 healthy cell lines. Compounds 1-3 and 4 exhibited noticeable cytotoxic activity, while 1-5 moderately inhibited lipid peroxidation.
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Affiliation(s)
- Erhan Kaplaner
- Faculty of Science, Department of Chemistry, Muğla Sıtkı Koçman University, Kötekli, Turkey
| | | | - Mehmet Öztürk
- Faculty of Science, Department of Chemistry, Muğla Sıtkı Koçman University, Kötekli, Turkey
| | - Ilgaz Akata
- Faculty of Science, Department of Biology, Ankara University, Ankara, Turkey
| | - Mehmet Emin Duru
- Faculty of Science, Department of Chemistry, Muğla Sıtkı Koçman University, Kötekli, Turkey
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2
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Timilsina AP, Raut BK, Huo C, Khadayat K, Budhathoki P, Ghimire M, Budhathoki R, Aryal N, Kim KH, Parajuli N. Metabolomics and molecular networking approach for exploring the anti-diabetic activity of medicinal plants. RSC Adv 2023; 13:30665-30679. [PMID: 37869390 PMCID: PMC10585453 DOI: 10.1039/d3ra04037b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 10/04/2023] [Indexed: 10/24/2023] Open
Abstract
Metabolomics and molecular networking approaches have expanded rapidly in the field of biological sciences and involve the systematic identification, visualization, and high-throughput characterization of bioactive metabolites in natural products using sophisticated mass spectrometry-based techniques. The popularity of natural products in pharmaceutical therapies has been influenced by medicinal plants with a long history of ethnobotany and a vast collection of bioactive compounds. Here, we selected four medicinal plants Cleistocalyx operculatus, Terminalia chebula, Ficus lacor, and Ficus semicordata, the biochemical characteristics of which remain unclear owing to the inherent complexity of their plant metabolites. In this study, we aimed to evaluate the potential of these aforementioned plant extracts in inhibiting the enzymatic activity of α-amylase and α-glucosidase, respectively, followed by the annotation of secondary metabolites. The methanol extract of Ficus semicordata exhibited the highest α-amylase inhibition with an IC50 of 46.8 ± 1.8 μg mL-1, whereas the water fraction of Terminalia chebula fruits demonstrated the most significant α-glucosidase inhibition with an IC50 value of 1.07 ± 0.01 μg mL-1. The metabolic profiling of plant extracts was analyzed through Liquid Chromatography-Mass Spectrometry (LC-HRMS) of the active fractions, resulting in the annotation of 32 secondary metabolites. Furthermore, we applied the Global Natural Product Social Molecular Networking (GNPS) platform to evaluate the MS/MS data of Terminalia chebula (bark), revealing that there were 205 and 160 individual ion species observed as nodes in the methanol and ethyl acetate fractions, respectively. Twenty-two metabolites were tentatively identified from the network map, of which 11 compounds were unidentified during manual annotation.
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Affiliation(s)
- Arjun Prasad Timilsina
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Bimal Kumar Raut
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Chen Huo
- School of Pharmacy, Sungkyunkwan University Suwon 16419 Republic of Korea +82-31-290-7700
| | - Karan Khadayat
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Prakriti Budhathoki
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Mandira Ghimire
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Rabin Budhathoki
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
| | - Niraj Aryal
- Department of Biology, University of Florida Gainesville FL 32611 USA
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University Suwon 16419 Republic of Korea +82-31-290-7700
| | - Niranjan Parajuli
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44618 Nepal +977-1-4332034
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In Vitro and In Silico Analysis of Bergenia ciliata and Mimosa pudica for Inhibition of α-Amylase. J CHEM-NY 2022. [DOI: 10.1155/2022/6997173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The discovery of antidiabetic natural products is a flourishing field of opportunity in the sector of drug discovery. Various medicinal plants with diverse chemical constituents have been extensively studied for drug development. Bergenia ciliata and Mimosa pudica have been traditionally used for the treatment of diabetes and consist of valuable phytochemicals. In this study, we have analyzed total phenolic and flavonoid content along with the antioxidant and α-amylase inhibitory activity. The crude extract of B. ciliata contains higher levels of TPC whereas higher TFC was observed in M. pudica. The strong antioxidant activity was shown by B. ciliata with an IC50 value of 125.86 ± 4.16 μg/mL. The ethyl acetate extract of B. ciliata and M. pudica showed higher α-amylase inhibitory activity with an IC50 value of 13.97 ± 0.10 and 11.97 ± 0.36 μg/mL, respectively. The biological potential of the reported phytochemicals was also assessed by using bioinformatic tools. Furthermore, the active phytochemicals from these plants were docked with human pancreatic α-amylase to study their inhibitory activities to this enzyme. The docking analysis revealed that catechin has lower binding energy (−8.6 kcal/mol) as compared to the commercial drug acarbose (−7.3 kcal/mol) indicating higher affinity towards the enzyme. This study additionally sheds more light on medicinal plants’ antidiabetic activity. So, this study will aid in the investigation of the biological properties of these plants as well as the identification of potential compounds with antidiabetic properties.
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Analysis of Phenolic and Flavonoid Content, α-Amylase Inhibitory and Free Radical Scavenging Activities of Some Medicinal Plants. ScientificWorldJournal 2022; 2022:4000707. [PMID: 36225946 PMCID: PMC9550511 DOI: 10.1155/2022/4000707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022] Open
Abstract
In Nepal, about 700 plant species have been reported to be used for the primary care of different diseases. However, many of them have not been studied yet for their scientific evidence. The main aim of this study is the quantitative analysis of flavonoids and phenolic content, antioxidant, and antidiabetic activities of the extracts of four different medicinal plants, namely, Pogostemon benghalensis, Aleuritopteris bicolor, Crateva unilocularis, and Rungia pectinata growing in Nepal. The methanol extracts of plant samples were prepared by the hot percolation method using the Soxhlet apparatus. The phytochemicals of the plant extracts were analysed by colour differentiation methods using different analytical reagents. The phenolic content was estimated by using Folin-Ciocalteu's phenol reagent and the flavonoid was estimated by the aluminium chloride colorimetric method. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay was used to evaluate the antioxidant potential. The α-amylase enzyme inhibition activity was performed to evaluate the antidiabetic activity of plant extracts. The amount of total phenolics and flavonoids content was found to be the highest in Pogostemon benghalensis (169.43 ± 3.58 mg GAE/g and 65.2 ± 2.0 mg QE/g), respectively, which also showed the most potent free radical scavenging activity (IC50 35.92 ± 0.65 μg/mL). The extract of Aleuritopteris bicolor showed the highest α-amylase inhibitory activity (IC50 651.58 ± 10.32 μg/mL) whereas Crateva unilocularis and Pogostemon benghalensis exhibited moderate activity. The extract of Rungia pectinata showed the least activity towards α-amylase inhibition. Some of the medicinal plants selected in this study showed high TPC and TFC values with potent biological activities. To the best of our knowledge, these medicinal plants have the least exposure to their biological activities, and the results provide scientific evidence for the traditional uses of these plants against diabetes and infectious diseases. However, a detailed study can be performed in these plants to isolate the active chemical compounds and to evaluate in vivo pharmacological activities to know the active drug candidates for the future drug development process.
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Xu P, Zhong Z, Huang H, Pan W, Zhang Y, Zhou A. Electrooxidative tandem cyclization of enaminones to give 3-arylthiochromone derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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6
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Amaral LM, Moniz T, Leite A, Oliveira A, Fernandes P, Ramos MJ, Araújo AN, Freitas M, Fernandes E, Rangel M. A combined experimental and computational study to discover novel tyrosinase inhibitors. J Inorg Biochem 2022; 234:111879. [DOI: 10.1016/j.jinorgbio.2022.111879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/12/2022] [Accepted: 05/27/2022] [Indexed: 11/29/2022]
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Phytochemical Analysis and Antioxidant and Antidiabetic Activities of Extracts from Bergenia ciliata, Mimosa pudica, and Phyllanthus emblica. Adv Pharmacol Pharm Sci 2022; 2022:4929824. [PMID: 35845257 PMCID: PMC9283070 DOI: 10.1155/2022/4929824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/28/2022] [Accepted: 06/17/2022] [Indexed: 01/26/2023] Open
Abstract
Diabetes is a metabolic disorder of high blood sugar levels which leads to various chronic health-related complications. The digestive enzymes α-amylase and α-glucosidase play a major role in the hydrolysis of starch to glucose; hence, inhibiting these enzymes is considered an important strategy for the treatment of diabetes. Medicinal plants such as Bergenia ciliata, Mimosa pudica, and Phyllanthus emblica are commonly used in traditional remedies due to their numerous health benefits. This study aimed to determine the phytochemicals as well as TPC and TFC contents in these plant extracts along with their antioxidant and enzyme inhibitory activity against α-glucosidase and α-amylase. The ethyl acetate extracts of selected plants have shown higher TPC and TFC contents. The aqueous extract of B. ciliata (IC50: 16.99 ± 2.56 μg/mL) and ethyl acetate extract of P. emblica (IC50: 11.98 ± 0.36 μg/mL) and M. pudica (IC50: 21.39 ± 3.76 μg/mL) showed effective antioxidant activities. Furthermore, ethyl acetate extract of B. ciliata showed significant inhibitory activity against α-amylase and α-glucosidase with IC50 values of 38.50 ± 1.32 μg/mL and 3.41 ± 0.04 μg/mL, respectively. Thus, secondary metabolites of these medicinal plants can be repurposed as effective inhibitors of digestive enzymes.
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He X, Yang F, Huang X. Proceedings of Chemistry, Pharmacology, Pharmacokinetics and Synthesis of Biflavonoids. Molecules 2021; 26:molecules26196088. [PMID: 34641631 PMCID: PMC8512048 DOI: 10.3390/molecules26196088] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 01/14/2023] Open
Abstract
Biflavonoids, composed of two monoflavonoid residues, occur naturally in angiosperms, bryophytes, ferns, and gymnosperms. More than 592 biflavonoids have been structurally elucidated, and they can be classified into two groups of C-C and C-linear fragments-C, based on whether the linker between the two residues contains an atom. As the linker can be established on two arbitrary rings from different residues, the C-C type contains various subtypes, as does the C-linear fragment-C type. Biflavonoids have a wide range of pharmacological activities, including anti-inflammatory, antioxidant, antibacterial, antiviral, antidiabetic, antitumor, and cytotoxic properties, and they can be applied in Alzheimer's disease and Parkinson's disease. This review mainly summarizes the distribution and chemistry of biflavonoids; additionally, their bioactivities, pharmacokinetics, and synthesis are discussed.
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Affiliation(s)
- Xinqian He
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510000, China; (X.H.); (F.Y.)
| | - Fan Yang
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510000, China; (X.H.); (F.Y.)
| | - Xin’an Huang
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510000, China; (X.H.); (F.Y.)
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
- Correspondence: ; Tel.: +86-020-36585450
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Molo Z, Tel-Çayan G, Deveci E, Öztürk M, Duru ME. Insight into isolation and characterization of compounds of Chaerophyllum bulbosum aerial part with antioxidant, anticholinesterase, anti-urease, anti-tyrosinase, and anti-diabetic activities. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Wu Y, Huo D, Chen G, Yan A. SAR and QSAR research on tyrosinase inhibitors using machine learning methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2021; 32:85-110. [PMID: 33517778 DOI: 10.1080/1062936x.2020.1862297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Tyrosinase is a key rate-limiting enzyme in the process of melanin synthesis, which is closely related to human pigmentation disorders. Tyrosinase inhibitors can down-regulate tyrosinase to effectively reduce melanin synthesis. In this work, we conducted structure-activity relationship (SAR) study on 1097 diverse mushroom tyrosinase inhibitors. We applied five kinds of machine learning methods to develop 15 classification models. Model 5B built by fully connected neural networks and ECFP4 fingerprints achieved the highest prediction accuracy of 91.36% and Matthews correlation coefficient (MCC) of 0.81 on the test set. The applicability domains (AD) of classification models were defined by d S T D - P R O method. Moreover, we clustered the 1097 inhibitors into eight subsets by K-Means to figure out inhibitors' structural features. In addition, 10 quantitative structure-activity relationship (QSAR) models were constructed by four machine learning methods based on 813 inhibitors. Model 6 J, the best QSAR model, was developed by fully connected neural networks with 50 RDKit descriptors. It resulted in a coefficient of determination (r 2) of 0.770 and a root mean squared error (RMSE) of 0.482 on the test set. The AD of Model 6 J was visualized by Williams plot. The models built in this study can be obtained from the authors.
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Affiliation(s)
- Y Wu
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - D Huo
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - G Chen
- College of Life Science and Technology, Beijing University of Chemical Technology , Beijing, China
| | - A Yan
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
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Ma RJ, Yang L, Bai X, Li JY, Yuan MY, Wang YQ, Xie Y, Hu JM, Zhou J. Phenolic Constituents with Antioxidative, Tyrosinase Inhibitory and Anti-aging Activities from Dendrobium loddigesii Rolfe. NATURAL PRODUCTS AND BIOPROSPECTING 2019; 9:329-336. [PMID: 31630376 PMCID: PMC6814690 DOI: 10.1007/s13659-019-00219-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 09/15/2019] [Indexed: 05/20/2023]
Abstract
Aqueous ethanol extracts of powdered stems of Dendrobium loddigesii afforded three new phenolics including threo-7-O-ethyl-9-O-(4-hydroxyphenyl)propionyl-guaiacylglycerol (1), (R)-4,5,4'-trihydroxy-3,3',α-trimethoxybibenzyl (2) and (S)-5,5',7-trihydroxy-3',4'-dimethoxyflavanone (3), together with eleven known analogues. Their structures were determined by extensive spectroscopic analysis. To identify natural antioxidants, whitening, and anti-aging agents, the abilities of these phenolics were assessed to scavenge the 1,2-diphenyl-2-picrylhydrazyl (DPPH) radical, their abilities to inhibit tyrosinase production, and their abilities to stimulate collagen production by human dermal fibroblasts-adult (HDFa) assay. It was found that compounds 1, 4-8, 13 and 14 exhibited significant DPPH radical scavenging activities, compound 10 exhibited tyrosinase inhibitory activity (IC50 37.904 μg/mL), and compound 9 showed significant collagen production with an EC50 value of 3.182 μg/mL. These results suggest that phenolic constituents from D. loddigesii may be candidate antioxidants, skin-whitening and/or anti-aging agents.
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Affiliation(s)
- Rui-Jing Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- College of Pharmacy, Guilin Medical University, Guilin, 541004, People's Republic of China
| | - Liu Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- R & D Center of Dr. Plant, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Xue Bai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Jin-Yu Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Ming-Yan Yuan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- R & D Center of Dr. Plant, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Ya-Qin Wang
- R & D Center of Dr. Plant, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Yong Xie
- R & D Center of Dr. Plant, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Jiang-Miao Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
- R & D Center of Dr. Plant, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
| | - Jun Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
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NMR-based phytochemical analysis of Vitis vinifera cv Falanghina leaves. Characterization of a previously undescribed biflavonoid with antiproliferative activity. Fitoterapia 2018; 125:13-17. [DOI: 10.1016/j.fitote.2017.12.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/06/2017] [Accepted: 12/09/2017] [Indexed: 11/22/2022]
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Ng SW, Chung LH, Yeung CF, Lo HS, Shek HL, Kang TS, Leung CH, Ma DL, Wong CY. Metalated Chromene and Chromone Complexes: pH Switchable Metal-Carbon Bonding Interaction, Photo-triggerable Chromone Delivery Application, and Antioxidative Activity. Chemistry 2017; 24:1779-1783. [DOI: 10.1002/chem.201705450] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Sze-Wing Ng
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
- State Key Laboratory of Millimeter Waves; City University of Hong Kong; Tat Chee Avenue, Kowloon Hong Kong SAR P.R. China
| | - Lai-Hon Chung
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
| | - Chi-Fung Yeung
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
- State Key Laboratory of Millimeter Waves; City University of Hong Kong; Tat Chee Avenue, Kowloon Hong Kong SAR P.R. China
- Shenzhen Research Institute; City University of Hong Kong; Shenzhen 518057 P. R. China
| | - Hoi-Shing Lo
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
- Shenzhen Research Institute; City University of Hong Kong; Shenzhen 518057 P. R. China
| | - Hau-Lam Shek
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
| | - Tian-Shu Kang
- State Key Laboratory of Quality Research in Chinese Medicine; Institute of Chinese Medical Sciences; University of Macau; Macao P.R. China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine; Institute of Chinese Medical Sciences; University of Macau; Macao P.R. China
| | - Dik-Lung Ma
- Department of Chemistry; Hong Kong Baptist University, Kowloon Tong; Hong Kong SAR P.R. China
| | - Chun-Yuen Wong
- Department of Chemistry; City University of Hong Kong; Tat Chee Avenue Hong Kong SAR P.R. China
- State Key Laboratory of Millimeter Waves; City University of Hong Kong; Tat Chee Avenue, Kowloon Hong Kong SAR P.R. China
- Shenzhen Research Institute; City University of Hong Kong; Shenzhen 518057 P. R. China
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Kolodziejczyk-Czepas J, Krzyżanowska-Kowalczyk J, Sieradzka M, Nowak P, Stochmal A. Clovamide and clovamide-rich extracts of three Trifolium species as antioxidants and moderate antiplatelet agents in vitro. PHYTOCHEMISTRY 2017; 143:54-63. [PMID: 28777978 DOI: 10.1016/j.phytochem.2017.07.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 07/26/2017] [Accepted: 07/28/2017] [Indexed: 05/26/2023]
Abstract
This in vitro study provides a new insight into the phytochemical, antioxidant, antiplatelet and cytotoxic profiles of commercial trans-clovamide and clovamide-rich extracts, isolated from aerial parts of three Trifolium species (i.e. T. clypeatum L., T. obscurum Savi and T. squarrosum L.). Under inorganic experimental conditions, the EC50 for the investigated substances varied between 4.87 (clovamide) and 7.91 μg/ml (T. clypeatum) according to the DPPH• assay. The most effective 1 mM ONOO- scavenger was clovamide (IC50 = 19.29 μg/ml), and the weakest was the T. obsucurum extract (IC50 = 41.79 μg/ml). The antioxidant action of the examined substances (1-50 μg/ml) was also evaluated in blood plasma (under 100 μM ONOO--induced oxidative stress) using 3-nitrotyrosine, protein thiol groups, lipid hydroperoxides and thiobarbituric acid-reactive substances as biomarkers. All examined substances were more effective in limiting the oxidative damage to blood plasma components than the nitrative damage. Their anti-nitrative action was statistically significant only at the highest concentration (50 μg/ml). Measurements of platelet adhesion and aggregation found the compounds to have moderate antiplatelet properties of up to 20% inhibition of platelet adhesion at concentrations of 1-5 μg/ml. Additionally, clovamide and Trifolium extracts demonstrated no cytotoxicity towards blood platelets or peripheral blood mononuclear cells.
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Affiliation(s)
- Joanna Kolodziejczyk-Czepas
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland.
| | - Justyna Krzyżanowska-Kowalczyk
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Pulawy, Poland.
| | - Malgorzata Sieradzka
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland.
| | - Pawel Nowak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland.
| | - Anna Stochmal
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Pulawy, Poland.
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16
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Reis J, Gaspar A, Milhazes N, Borges F. Chromone as a Privileged Scaffold in Drug Discovery: Recent Advances. J Med Chem 2017; 60:7941-7957. [PMID: 28537720 DOI: 10.1021/acs.jmedchem.6b01720] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The use of privileged structures in drug discovery has proven to be an effective strategy, allowing the generation of innovative hits/leads and successful optimization processes. Chromone is recognized as a privileged structure and a useful template for the design of novel compounds with potential pharmacological interest, particularly in the field of neurodegenerative, inflammatory, and infectious diseases as well as diabetes and cancer. This perspective provides the reader with an update of an earlier article entitled "Chromone: A Valid Scaffold in Medicinal Chemistry" ( Chem. Rev. 2014 , 114 , 4960 - 4992 ) and is mainly focused on chromones of biological interest, including those isolated from natural sources. Moreover, as drug repurposing is becoming an attractive drug discovery approach, recent repurposing studies of chromone-based drugs are also reported.
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Affiliation(s)
- Joana Reis
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , Porto 4169-007, Portugal
| | - Alexandra Gaspar
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , Porto 4169-007, Portugal
| | - Nuno Milhazes
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , Porto 4169-007, Portugal
| | - Fernanda Borges
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , Porto 4169-007, Portugal
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17
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Xu J, Liu J, Zhu X, Yu Y, Cao S. Novel inhibitors of tyrosinase produced by the 4-substitution of TCT. Food Chem 2017; 221:1530-1538. [DOI: 10.1016/j.foodchem.2016.10.140] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 10/10/2016] [Accepted: 10/28/2016] [Indexed: 01/26/2023]
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18
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Kolodziejczyk-Czepas J. Trifolium species - the latest findings on chemical profile, ethnomedicinal use and pharmacological properties. ACTA ACUST UNITED AC 2016; 68:845-61. [PMID: 27230819 DOI: 10.1111/jphp.12568] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 04/10/2016] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Clovers (Trifolium, Fabaceae) have a long history of use in folk medicine. Furthermore, during last 3 years, a considerable growth in scientific interest in these plants has been observed. This article summarizes and critically reviews an over 3-year progress of knowledge of ethnomedicinal use, phytochemical profile, physiological effects and possible therapeutic action of various clover species. It contains the latest literature (over 80 papers), originated from international databases (MEDLINE/PubMed, Science Direct/Elsevier, Springer Link, Wiley Online Library) and reports from other international and local scientific periodicals. KEY FINDINGS Traditional uses of T. pratense and T. repens have been confirmed, while the folk medicine recommendations for administration of other clovers such as T. burchellianum, T. fragiferum, T. hybridum, T. minus and T. purpureum were reported for the first time. Furthermore, several other clover species were also investigated in terms of their antioxidant, antimicrobial and phytoestrogenic effects for the first time. Only T. alexandrinum, T. pratense and T. medium were examined in animal studies. SUMMARY Besides T. pratense, other clovers may be a rich source of bioactive phytochemicals. However, in contradiction to red clover, the therapeutic use of other clovers is still limited by the lack of in-vivo evidence.
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Affiliation(s)
- Joanna Kolodziejczyk-Czepas
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
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19
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Cho SJ, Kwon HS. Tyrosinase Inhibitory Activities of Safrole fromMyristica fragransHoutt. ACTA ACUST UNITED AC 2015. [DOI: 10.3839/jabc.2015.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Soo Jeong Cho
- Department of Pharmaceutical Engineering, Gyeongnam National University of Science and Technology, Jinju 660-758, Republic of Korea
| | - Hyun Sook Kwon
- Korea Promotion Institute for Traditional Medicine Industry, Gyeongsan 712-260, Republic of Korea
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20
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Synthesis, structural elucidation and bioevaluation of 4-amino-1,2,4-triazole-3-thione’s Schiff base derivatives. Arch Pharm Res 2015; 39:161-171. [DOI: 10.1007/s12272-015-0688-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 11/18/2015] [Indexed: 12/21/2022]
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21
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In Silico Discovery of Novel Potent Antioxidants on the Basis of Pulvinic Acid and Coumarine Derivatives and Their Experimental Evaluation. PLoS One 2015; 10:e0140602. [PMID: 26474393 PMCID: PMC4608598 DOI: 10.1371/journal.pone.0140602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 08/25/2015] [Indexed: 02/02/2023] Open
Abstract
A pigment from the edible mushroom Xerocomus badius norbadione A, which is a natural derivative of pulvinic acid, was found to possess antioxidant properties. Since the pulvinic acid represents a novel antioxidant scaffold, several other derivatives were recently synthetized and evaluated experimentally, along with some structurally related coumarine derivatives. The obtained data formed the basis for the construction of several quantitative structure-activity and pharmacophore models, which were employed in the virtual screening experiments of compound libraries and for the prediction of their antioxidant activity, with the goal of discovering novel compounds possessing antioxidant properties. A final prioritization list of 21 novel compounds alongside 8 established antioxidant compounds was created for their experimental evaluation, consisting of the DPPH assay, 2-deoxyribose assay, β-carotene bleaching assay and the cellular antioxidant activity assay. Ten novel compounds from the tetronic acid and barbituric acid chemical classes displayed promising antioxidant activity in at least one of the used assays, that is comparable to or even better than some standard antioxidants. Compounds 5, 7 and 9 displayed good activity in all the assays, and were furthermore effective preventers of oxidative stress in human peripheral blood mononuclear cells, which are promising features for the potential therapeutic use of such compounds.
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Hu YJ, Jiang N, Xie SS, Li SY, Lan JS, Kong LY, Wang XB. Iodine-promoted sequential Michael and oxidative dehydrogenation processes: synthesis of trisubstituted methanes containing a coumarin and a chromone ring. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.08.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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23
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Liang TW, Lee YC, Wang SL. Tyrosinase inhibitory activity of supernatant and semi-purified extracts from squid pen fermented with Burkholderia cepacia TKU025. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1725-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Tyrosinase inhibitors and insecticidal materials produced by Burkholderia cepacia using squid pen as the sole carbon and nitrogen source. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1602-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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