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Carcache de Blanco EJ, Addo EM, Rakotondraibe HL, Soejarto DD, Kinghorn AD. Strategies for the discovery of potential anticancer agents from plants collected from Southeast Asian tropical rainforests as a case study. Nat Prod Rep 2023; 40:1181-1197. [PMID: 37194649 PMCID: PMC10524867 DOI: 10.1039/d2np00080f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Covering up to early 2023The present review summarizes recent accomplishments made as part of a multidisciplinary, multi-institutional anticancer drug discovery project, wherein samples comprising higher plants were collected primarily from Southeast Asia, and also from Central America, and the West Indies. In the introductory paragraphs, a short perspective is provided on the current importance of plants in the discovery of cancer therapeutic agents, and the contributions of other groups working towards this objective are mentioned. For our own investigations, following their collection, tropical plants have been subjected to solvent extraction and biological evaluation for their antitumor potential. Several examples of purified plant lead bioactive compounds were obtained and characterized, and found to exhibit diverse structures, including those of the alkaloid, cardiac glycoside, coumarin, cucurbitacin, cyclobenzofuran (rocaglate), flavonoid, lignan, and terpenoid types. In order to maximize the efficiency of work on drug discovery from tropical plant species, strategies to optimize various research components have been developed, including those for the plant collections and taxonomic identification, in accordance with the requirements of contemporary international treaties and with a focus on species conservation. A major component of this aspect of the work is the development of collaborative research agreements with representatives of the source countries of tropical rainforest plants. The phytochemical aspects have included the preparation of plant extracts for initial screening and the selection of promising extracts for activity-guided fractionation. In an attempt to facilitate this process, a TOCSY-based NMR procedure has been applied for the determination of bioactive rocaglate derivatives in samples of Aglaia species (Meliaceae) collected for the project. Preliminary in vitro and in vivo mechanistic studies carried out by the authors are described for two tropical plant-derived bioactive lead compounds, corchorusoside C and (+)-betulin, including work conducted with a zebrafish (Danio rerio) model. In the concluding remarks, a number of lessons are summarized that our group has learned as a result of working on anticancer drug discovery using tropical plants, which we hope will be of interest to future workers.
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Affiliation(s)
- Esperanza J Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, USA.
| | - Ermias Mekuria Addo
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, USA.
| | - H Liva Rakotondraibe
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, USA.
| | - Djaja D Soejarto
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
- Science and Education, Field Museum, Chicago, IL 60605, USA
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, USA.
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Miranda de Souza Duarte-Filho LA, Ortega de Oliveira PC, Yanaguibashi Leal CE, de Moraes MC, Picot L. Ligand fishing as a tool to screen natural products with anticancer potential. J Sep Sci 2023:e2200964. [PMID: 36808885 DOI: 10.1002/jssc.202200964] [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: 11/24/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/23/2023]
Abstract
Cancer is the second leading cause of death in the world and its incidence is expected to increase with the aging of the world's population and globalization of risk factors. Natural products and their derivatives have provided a significant number of approved anticancer drugs and the development of robust and selective screening assays for the identification of lead anticancer natural products are essential in the challenge of developing personalized targeted therapies tailored to the genetic and molecular characteristics of tumors. To this end, a ligand fishing assay is a remarkable tool to rapidly and rigorously screen complex matrices, such as plant extracts, for the isolation and identification of specific ligands that bind to relevant pharmacological targets. In this paper, we review the application of ligand fishing with cancer-related targets to screen natural product extracts for the isolation and identification of selective ligands. We provide critical analysis of the system configurations, targets, and key phytochemical classes related to the field of anticancer research. Based on the data collected, ligand fishing emerges as a robust and powerful screening system for the rapid discovery of new anticancer drugs from natural resources. It is currently an underexplored strategy according to its considerable potential.
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Affiliation(s)
| | | | - Cíntia Emi Yanaguibashi Leal
- Departamento de Ciências Farmacêuticas, Pós-Graduação em Biociências (PGB) Universidade Federal do Vale do São Francisco, Petrolina, Brazil
| | - Marcela Cristina de Moraes
- Departamento de Química Orgânica, Laboratório BIOCROM, Instituto de Química, Universidade Federal Fluminense, Niterói, Brazil
| | - Laurent Picot
- UMR CNRS 7266 LIENSs, Département de Biotechnologie, La Rochelle Université, La Rochelle, France
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Kang S, Han J, Jang SC, An JS, Kang I, Kwon Y, Nam SJ, Shim SH, Cho JC, Lee SK, Oh DC. Epoxinnamide: An Epoxy Cinnamoyl-Containing Nonribosomal Peptide from an Intertidal Mudflat-Derived Streptomyces sp. Mar Drugs 2022; 20:md20070455. [PMID: 35877748 PMCID: PMC9321520 DOI: 10.3390/md20070455] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/09/2022] [Accepted: 07/09/2022] [Indexed: 12/03/2022] Open
Abstract
Cinnamoyl-containing nonribosomal peptides (CCNPs) form a unique family of actinobacterial secondary metabolites and display various biological activities. A new CCNP named epoxinnamide (1) was discovered from intertidal mudflat-derived Streptomyces sp. OID44. The structure of 1 was determined by the analysis of one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR) data along with a mass spectrum. The absolute configuration of 1 was assigned by the combination of advanced Marfey’s method, 3JHH and rotating-frame overhauser effect spectroscopy (ROESY) analysis, DP4 calculation, and genomic analysis. The putative biosynthetic pathway of epoxinnamide (1) was identified through the whole-genome sequencing of Streptomyces sp. OID44. In particular, the thioesterase domain in the nonribosomal peptide synthetase (NRPS) biosynthetic gene cluster was proposed as a bifunctional enzyme, which catalyzes both epimerization and macrocyclization. Epoxinnamide (1) induced quinone reductase (QR) activity in murine Hepa-1c1c7 cells by 1.6-fold at 5 μM. It also exhibited effective antiangiogenesis activity in human umbilical vein endothelial cells (IC50 = 13.4 μM).
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Affiliation(s)
- Sangwook Kang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Jaeho Han
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Sung Chul Jang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Ilnam Kang
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (I.K.); (J.-C.C.)
| | - Yun Kwon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu 41566, Korea;
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea;
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (I.K.); (J.-C.C.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
- Correspondence: ; Tel.: +82-880-2491; Fax: +82-762-8322
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Zhang Z, Yung KKL, Ko JKS. Therapeutic Intervention in Cancer by Isoliquiritigenin from Licorice: A Natural Antioxidant and Redox Regulator. Antioxidants (Basel) 2022; 11:1349. [PMID: 35883840 PMCID: PMC9311861 DOI: 10.3390/antiox11071349] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/27/2022] [Accepted: 07/05/2022] [Indexed: 01/27/2023] Open
Abstract
Oxidative stress could lead to a variety of body dysfunctions, including neurodegeneration and cancer, which are closely associated with intracellular signal transducers such as reactive oxygen species (ROS). It has been suggested that ROS is the upstream regulator of autophagy, and that it provides a negative feedback regulation to remove oxidative damage. Defects in the ROS-autophagic redox homeostasis could lead to the increased production of ROS and the accumulation of damaged organelles that in turn promote metabolic reprogramming and induce tumorigenesis. One significant characteristic of pancreatic cancer is the reprogramming of cellular energy metabolism, which facilitates the rapid growth, invasiveness, and the survival of cancer cells. Thus, the rectification of metabolic dysfunction is essential in therapeutic cancer targeting. Isoliquiritigenin (ISL) is a chalcone obtained from the plant Glycyrrhiza glabra, which is a powdered root licorice that has been consumed for centuries in different regions of the world. ISL is known to be a natural antioxidant that possesses diversified functions, including redox regulation in cells. This review contains discussions on the herbal source, biological properties, and anticancer potential of ISL. This is the first time that the anticancer activities of ISL in pancreatic cancer has been elucidated, with a coverage of the involvement of antioxidation, metabolic redox regulation, and autophagy in pancreatic cancer development. Furthermore, some remarks on related compounds of the isoflavonoid biosynthetic pathway of ISL will also be discussed.
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Affiliation(s)
- Zhu Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China;
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
- Golden Meditech Centre for Neuroregeneration Sciences, Hong Kong Baptist University, Hong Kong, China
| | - Ken Kin-Lam Yung
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
- Golden Meditech Centre for Neuroregeneration Sciences, Hong Kong Baptist University, Hong Kong, China
| | - Joshua Ka-Shun Ko
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China;
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
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Li MM, Lu J, Deng Y. Dracaenone, a novel type of homoisoflavone: Natural source, biological activity and chemical synthesis. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220510151029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
The discovery and synthesis of natural products, especially those possessing novel scaffolds, are crucial to the development of new drugs. Dracaenones are part of homoisoflavone natural products, owning a complex spiro-bridged polycyclic structures bearing benzylic quaternary carbon centers, and some of them reveal considerable biological activity. There have been continuous studies on these compounds due to the rare structure and the important biological properties. However, a systematic summary and analysis for dracaenone is lacking. This review aims to generally summarize the natural source, synthetic strategies and biological activities of dracaenones, moreover, the limitations, challenges, and future prospects were discussed, wishing to provide references for the follow-up study of compounds with similar skeleton.
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Affiliation(s)
- Mei-Mei Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, , Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
- Hong Kong Baptist University, Hong Kong SAR, 999077, China
| | - Yun Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
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An JS, Kim MS, Han J, Jang SC, Im JH, Cui J, Lee Y, Nam SJ, Shin J, Lee SK, Yoon YJ, Oh DC. Nyuzenamide C, an Antiangiogenic Epoxy Cinnamic Acid-Containing Bicyclic Peptide from a Riverine Streptomyces sp. JOURNAL OF NATURAL PRODUCTS 2022; 85:804-814. [PMID: 35294831 DOI: 10.1021/acs.jnatprod.1c00837] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A new nonribosomal peptide, nyuzenamide C (1), was discovered from riverine sediment-derived Streptomyces sp. DM14. Comprehensive analysis of the spectroscopic data of nyuzenamide C (1) revealed that 1 has a bicyclic backbone composed of six common amino acid residues (Asn, Leu, Pro, Gly, Val, and Thr) and four nonproteinogenic amino acid units, including hydroxyglycine, β-hydroxyphenylalanine, p-hydroxyphenylglycine, and 3,β-dihydroxytyrosine, along with 1,2-epoxypropyl cinnamic acid. The absolute configuration of 1 was proposed by J-based configuration analysis, the advanced Marfey's method, quantum mechanics-based DP4 calculations, and bioinformatic analysis of its nonribosomal peptide synthetase biosynthetic gene cluster. Nyuzenamide C (1) displayed antiangiogenic activity in human umbilical vein endothelial cells and induced quinone reductase in murine Hepa-1c1c7 cells.
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Myoun-Su Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaeho Han
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Chul Jang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Hyeon Im
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinsheng Cui
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeonjin Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Ahmad B, Khan MR, Shah NA, Kondratyuk TP, Ahmed N, Pezzuto JM, Gul A, Khattak A. Investigation of Chemopreventive and Antiproliferative Potential of Dicliptera roxburghiana. Integr Cancer Ther 2022; 21:15347354211069934. [PMID: 34991410 PMCID: PMC8753230 DOI: 10.1177/15347354211069934] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
CONTEXT Carcinogenesis causes much human misery. It is a process involving multistage alterations. Medicinal plants are candidates for beneficial anticancer agents. OBJECTIVES Investigation of anticancer proficiencies of the plant Dicliptera roxburghiana. MATERIAL AND METHODS Crude extract and derived fractions were inspected for their inhibitory potential against nuclear factor KB (NFκB), nitric oxide synthase inhibition, aromatase inhibition and induction of quinone reductase 1 (QR 1). Antiproliferative activity was determined by using various cancer cell lines for example hormone responsive breast cancer cell line MCF-7, estrogen receptor negative breast cancer cell line MDA-MB-231, murine hepatoma cells Hepa 1c1c7, human neuroblastoma cells SK-N-SH and neuroblastoma cells MYCN-2. RESULTS Ethyl acetate and n-butanol fractions of D. roxburghiana were strongly active against NFκB with IC50 of 16.6 ± 1.3 and 8.4 ± 0.7 µg/ml respectively with 100% survival. Chloroform fraction of the plant exhibited an induction ratio of 2.4 ± 0.09 with CD value of 17.7 µg/ml. Regarding the nitrite assay, the n-hexane fraction exhibited significant inhibition of NO activity with IC50 of 17.8 ± 1.25 µg/ml. The n-butanol fraction exhibited strong antiproliferative activity against IcIc-7 cell lines with IC50 values of 13.6 ± 1.91 µg/ml; against MYCN-2 a cytotoxic effect developed with dose dependence, with IC50 of 12.6 ± 1.24 µg/ml. In antiproliferative activity against SK-N-SH cell lines, chloroform, ethyl acetate and n-butanol fractions were efficiently active with IC50 values of 11.2 ± 0.84, 14.6 ± 1.71 and 16.3 ± 1.57 respectively. DISCUSSION AND CONCLUSION It was demonstrated that various fractions of D. roxburghiana displayed appreciable anticancer characteristics and could be a potent source for the development of anticancer leads.
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Affiliation(s)
- Bushra Ahmad
- Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
| | | | - Naseer Ali Shah
- COMSATS Institute of Information Technology, Islamabad, Pakistan
| | | | | | | | - Asma Gul
- Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
| | - Aishma Khattak
- Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
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Wahab S, Annadurai S, Abullais SS, Das G, Ahmad W, Ahmad MF, Kandasamy G, Vasudevan R, Ali MS, Amir M. Glycyrrhiza glabra (Licorice): A Comprehensive Review on Its Phytochemistry, Biological Activities, Clinical Evidence and Toxicology. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122751. [PMID: 34961221 PMCID: PMC8703329 DOI: 10.3390/plants10122751] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 05/03/2023]
Abstract
There are more than 30 species of Glycyrrhiza genus extensively spread worldwide. It was the most prescribed herb in Ancient Egyptian, Roman, Greek, East China, and the West from the Former Han era. There are various beneficial effects of licorice root extracts, such as treating throat infections, tuberculosis, respiratory, liver diseases, antibacterial, anti-inflammatory, and immunodeficiency. On the other hand, traditional medicines are getting the attraction to treat many diseases. Therefore, it is vital to screen the medicinal plants to find the potential of new compounds to treat chronic diseases such as respiratory, cardiovascular, anticancer, hepatoprotective, etc. This work comprehensively reviews ethnopharmacological uses, phytochemistry, biological activities, clinical evidence, and the toxicology of licorice, which will serve as a resource for future clinical and fundamental studies. An attempt has been made to establish the pharmacological effect of licorice in different diseases. In addition, the focus of this review article is on the molecular mechanism of licorice extracts and their four flavonoids (isoliquiritigenin, liquiritigenin, lichalocone, and glabridin) pharmacologic activities. Licorice could be a natural alternative for current therapy to exterminate new emerging disorders with mild side effects. This review will provide systematic insights into this ancient drug for further development and clinical use.
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Affiliation(s)
- Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
- Correspondence:
| | - Sivakumar Annadurai
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - Shahabe Saquib Abullais
- Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
| | - Gotam Das
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
| | - Wasim Ahmad
- Department of Pharmacy, Mohammed Al-Mana College for Medical Sciences, Safaa, Dammam 34222, Saudi Arabia;
| | - Md Faruque Ahmad
- Department of Clinical Nutrition, College of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia;
| | - Geetha Kandasamy
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - Rajalakshimi Vasudevan
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - Md Sajid Ali
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia;
| | - Mohd Amir
- Department of Natural Products and Alternative Medicines, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
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Du YE, Bae ES, Lim Y, Cho JC, Nam SJ, Shin J, Lee SK, Nam SI, Oh DC. Svalbamides A and B, Pyrrolidinone-Bearing Lipodipeptides from Arctic Paenibacillus sp. Mar Drugs 2021; 19:229. [PMID: 33920625 PMCID: PMC8073366 DOI: 10.3390/md19040229] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/15/2021] [Accepted: 04/15/2021] [Indexed: 11/23/2022] Open
Abstract
Two new secondary metabolites, svalbamides A (1) and B (2), were isolated from a culture extract of Paenibacillus sp. SVB7 that was isolated from surface sediment from a core (HH17-1085) taken in the Svalbard archipelago in the Arctic Ocean. The combinational analysis of HR-MS and NMR spectroscopic data revealed the structures of 1 and 2 as being lipopeptides bearing 3-amino-2-pyrrolidinone, d-valine, and 3-hydroxy-8-methyldecanoic acid. The absolute configurations of the amino acid residues in svalbamides A and B were determined using the advanced Marfey's method, in which the hydrolysates of 1 and 2 were derivatized with l- and d- forms of 1-fluoro-2,4-dinitrophenyl-5-alanine amide (FDAA). The absolute configurations of 1 and 2 were completely assigned by deducing the stereochemistry of 3-hydroxy-8-methyldecanoic acid based on DP4 calculations. Svalbamides A and B induced quinone reductase activity in Hepa1c1c7 murine hepatoma cells, indicating that they represent chemotypes with a potential for functioning as chemopreventive agents.
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Affiliation(s)
- Young Eun Du
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (Y.E.D.); (E.S.B.); (J.S.); (S.K.L.)
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (Y.E.D.); (E.S.B.); (J.S.); (S.K.L.)
| | - Yeonjung Lim
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (Y.L.); (J.-C.C.)
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (Y.L.); (J.-C.C.)
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea;
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (Y.E.D.); (E.S.B.); (J.S.); (S.K.L.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (Y.E.D.); (E.S.B.); (J.S.); (S.K.L.)
| | - Seung-Il Nam
- Korea Polar Research Institute, Incheon 21990, Korea;
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (Y.E.D.); (E.S.B.); (J.S.); (S.K.L.)
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10
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Maximino SC, Dutra JAP, Rodrigues RP, Gonçalves RCR, Morais PAB, Ventura JA, Schuenck RP, Júnior VL, Kitagawa RR, S Borges W. Synthesis of Eugenol Derivatives and Evaluation of their Antifungal Activity Against Fusarium solani f. sp. piperis. Curr Pharm Des 2020; 26:1532-1542. [PMID: 32242782 DOI: 10.2174/1381612826666200403120448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/13/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Fusarium solani f. sp. piperis is a phytopathogen that causes one of the most destructive diseases in black pepper crops, resulting in significant economic and crop production losses. Consequently, the control of this fungal disease is a matter of current and relevant interest in agriculture. OBJECTIVE The objective was to synthesize eugenol derivatives with antifungal activity. METHODS In this study, using bimolecular nucleophilic substitution and click chemistry approaches, four new and three known eugenol derivatives were obtained. The eugenol derivatives were characterized and their antifungal and cytotoxic effects were evaluated. RESULTS Eugenol derivative 4 (2-(4-allyl-2-methoxyphenoxy)-3-chloronaphthalene-1,4-dione) was the most active against F. solani f. sp. piperis and showed acceptable cytotoxicity. Compound 4 was two-fold more effective than tebuconazole in an antifungal assay and presented similar cytotoxicity in macrophages. The in silico study of β-glucosidase suggests a potential interaction of 4 with amino acid residues by a cation-π interaction with residue Arg177 followed by a hydrogen bond with Glu596, indicating an important role in the interactions with 4, justifying the antifungal action of this compound. In addition, the cytotoxicity after metabolism was evaluated as a mimic assay with the S9 fraction in HepG2 cells. Compound 4 demonstrated maintenance of cytotoxicity, showing IC50 values of 11.18 ± 0.5 and 9.04 ± 0.2 μg mL-1 without and with the S9 fraction, respectively. In contrast, eugenol (257.9 ± 0.4 and 133.5 ± 0.8 μg mL-1), tebuconazole (34.94 ± 0.2 and 26.76 ± 0.17 μg mL-1) and especially carbendazim (251.0 ± 0.30 and 34.7 ± 0.10 μg mL-1) showed greater cytotoxicity after hepatic biotransformation. CONCLUSION The results suggest that 4 is a potential candidate for use in the design of new and effective compounds that could control this pathogen.
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Affiliation(s)
- Sarah C Maximino
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Jessyca A P Dutra
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Ricardo P Rodrigues
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Rita C R Gonçalves
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Pedro A B Morais
- Department of Chemistry and Physics, Exact, Natural and Health Sciences Center, Federal University of Espírito Santo, Alto Universitário, s/n, Guararema, Alegre, ES, Brazil
| | - José A Ventura
- Capixaba Institute for Research, Technical Assistance and Rural Extension, Rua Afonso Sarlo 160, Bento Ferreira, 29052-010, Vitória, ES, Brazil
| | - Ricardo P Schuenck
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Valdemar Lacerda Júnior
- Department of Chemistry, Exact Sciences Center, Federal University of Espírito Santo, Avenida Fernando Ferrari 514, Goiabeiras, 29075-910, Vitória, ES, Brazil
| | - Rodrigo R Kitagawa
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil
| | - Warley S Borges
- Graduate Program of Pharmaceutical Sciences, Health Sciences Center, Federal University of Espírito Santo, Avenida Marechal Campos 1468, Maruípe, 29047-105,Vitória, ES, Brazil.,Department of Chemistry, Exact Sciences Center, Federal University of Espírito Santo, Avenida Fernando Ferrari 514, Goiabeiras, 29075-910, Vitória, ES, Brazil
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11
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Iniguez AB, Zhu MJ. Hop bioactive compounds in prevention of nutrition-related noncommunicable diseases. Crit Rev Food Sci Nutr 2020; 61:1900-1913. [PMID: 32462886 DOI: 10.1080/10408398.2020.1767537] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Nutrition-related noncommunicable diseases (NR-NCDs) such as cardiovascular disease and type 2 diabetes both negatively impact the quality of life of many individuals and generate a substantial burden on society, demonstrating a need for intervention. Phytochemicals are investigated as a potential approach for combating NR-NCDs, and those found in hops have gained increased attention in recent decades. Hops, the strobile of the plant Humulus lupulus, are grown primarily for the brewing industry as they confer taste and increased shelf-life. The bitter acids represent the main compounds of interest for improving beer quality. Additionally, bitter acids as well as the prenylated chalcone xanthohumol, exhibit a wide range of health beneficial properties. This review summarizes those beneficial effects of bitter acids and xanthohumol on NR-NCDs, including inflammatory and immune diseases, obesity and metabolic disorders, as well as cancer prevention.
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Affiliation(s)
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, Washington, USA
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12
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Oliveira BG, Pimentel EF, Pereira AH, Tosato F, Pinto FE, Ventura JA, Endringer DC, Romão W. Phenolic and glycidic profiling of bananas Musa sp associated with maturation stage and cancer chemoprevention activities. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Novakovic M, Ilic-Tomic T, Tesevic V, Simic K, Ivanovic S, Simic S, Opsenica I, Nikodinovic-Runic J. Bisaurones – enzymatic production and biological evaluation. NEW J CHEM 2020. [DOI: 10.1039/d0nj00758g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enzyme-catalyzed oxidation of butein afforded four dimers of aurone sulfuretin with cytotoxic and antioxidative properties.
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Affiliation(s)
- Miroslav Novakovic
- National Institute, Institute of Chemistry
- Technology and Metallurgy
- 11000 Belgrade
- Serbia
| | - Tatjana Ilic-Tomic
- Institute of Molecular Genetics and Genetic Engineering
- 11000 Belgrade
- Serbia
| | - Vele Tesevic
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| | - Katarina Simic
- National Institute, Institute of Chemistry
- Technology and Metallurgy
- 11000 Belgrade
- Serbia
| | - Stefan Ivanovic
- National Institute, Institute of Chemistry
- Technology and Metallurgy
- 11000 Belgrade
- Serbia
| | - Stefan Simic
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| | - Igor Opsenica
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
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14
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Zhao TT, Xu YQ, Hu HM, Gong HB, Zhu HL. Isoliquiritigenin (ISL) and its Formulations: Potential Antitumor Agents. Curr Med Chem 2019; 26:6786-6796. [DOI: 10.2174/0929867325666181112091700] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 01/09/2023]
Abstract
Isoliquiritigenin (2’,4’,4-trihydroxychalcone, ISL) is one of the most important
chalcone compounds which is mainly derived from licorice root and many other plants. It exhibits
a remarkable range of potent biological and pharmacological activities such as antioxidative,
antitumor, antiaging, anti-inflammatory, anti-diabetic activities, etc. Numerous research
teams have demonstrated that ISL posseses the ability to carry out antigrowth and proliferation
in various cancer cells in vitro and in vivo. Meanwhile, the underlying mechanisms
of ISL that inhibit cancer cell proliferation have not been well explored. However, the poor
bioavailability and low water-soluble limit its clinical application. This review aims at providing
a comprehensive overview of the pharmacology antitumor activity of ISL and its mechanisms
in different malignancy especially in breast cancer cell line and summarize developments
of formulation utilized to overcome the barrier between its delivery characteristics and
application in clinics over the past 20 years.
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Affiliation(s)
- Ting-Ting Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, China
| | - Yu-Qing Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, China
| | - Hui-Min Hu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, China
| | - Hai-Bin Gong
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, China
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15
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Supplementation of p-coumaric acid exhibits chemopreventive effect via induction of Nrf2 in a short-term preclinical model of colon cancer. Eur J Cancer Prev 2019; 28:472-482. [DOI: 10.1097/cej.0000000000000496] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Hussain RA, Badshah A, Ahmed N, Pezzuto JM, Kondratyuk TP, Park EJ, Hussain I. Synthesis, characterization and biological applications of selenoureas having ferrocene and substituted benzoyl functionalities. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Shareef MA, Khan I, Babu BN, Kamal A. A Comprehensive Review on the Therapeutic Versatility of Imidazo [2,1-b]thiazoles. Curr Med Chem 2019; 27:6864-6887. [PMID: 31362648 DOI: 10.2174/0929867326666190729152440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/08/2019] [Accepted: 06/19/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Imidazo[2,1-b]thiazole, a well-known fused five-membered hetrocycle is one of the most promising and versatile moieties in the area of medicinal chemistry. Derivatives of imidazo[2,1-b]thiazole have been investigated for the development of new derivatives that exhibit diverse pharmacological activities. This fused heterocycle is also a part of a number of therapeutic agents. OBJECTIVE To review the extensive pharmacological activities of imidazo[2,1-b]thiazole derivatives and the new molecules developed between 2000-2018 and their usefulness. METHOD Thorough literature review of all relevant papers and patents was conducted. CONCLUSION The present review, covering a number of aspects, is expected to provide useful insights in the design of imidazo[2,1-b]thiazole-based compounds and would inspire the medicinal chemists for a comprehensive and target-oriented information to achieve a major breakthrough in the development of clinically viable candidates.
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Affiliation(s)
- Mohd Adil Shareef
- Department of Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad,
500007 India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Irfan Khan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India,Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Bathini Nagendra Babu
- Department of Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad,
500007 India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ahmed Kamal
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India,Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India,School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi
110062, India
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18
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Li Y, Sun Y, Zhu M, Zhu R, Zhang J, Zhou J, Wang T, Qiao Y, Lou H. Sacculatane diterpenoids from the Chinese liverwort Pellia epiphylla with protection against H 2O 2-induced apoptosis of PC12 cells. PHYTOCHEMISTRY 2019; 162:173-182. [PMID: 30925378 DOI: 10.1016/j.phytochem.2019.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 03/06/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
Eight previously undescribed sacculatane diterpenoids, epiphyllins A-H, and one unknown bibenzyl-based isopentene along with seven known compounds were isolated from the Chinese liverwort Pellia epiphylla (L.) Corda. Their structures were established unequivocally on the basis of spectroscopic data and CD measurement. The quinine reductase-inducing activity evaluation demonstrated that epiphyllins A-D, 1β-hydroxysacculatanolide and pellianolactone B displayed moderate antioxidant effect. Further investigation of pellianolactone B revealed its protective effects on H2O2-induced oxidative insults and apoptosis in PC12 cells.
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Affiliation(s)
- Yi Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Yong Sun
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Mingzhu Zhu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250010, People's Republic of China
| | - Jiaozhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Jinchuan Zhou
- School of Pharmacy, Linyi University, Linyi, 276000, People's Republic of China
| | - Tian Wang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Yanan Qiao
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China
| | - Hongxiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan, 250012, People's Republic of China.
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19
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Simultaneous Determination and Pharmacokinetic Characterization of Glycyrrhizin, Isoliquiritigenin, Liquiritigenin, and Liquiritin in Rat Plasma Following Oral Administration of Glycyrrhizae Radix Extract. Molecules 2019; 24:molecules24091816. [PMID: 31083444 PMCID: PMC6539080 DOI: 10.3390/molecules24091816] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/06/2019] [Accepted: 05/09/2019] [Indexed: 11/25/2022] Open
Abstract
Glycyrrhizae Radix is widely used as herbal medicine and is effective against inflammation, various cancers, and digestive disorders. We aimed to develop a sensitive and simultaneous analytical method for detecting glycyrrhizin, isoliquiritigenin, liquiritigenin, and liquiritin, the four marker components of Glycyrrhizae Radix extract (GRE), in rat plasma using liquid chromatography-tandem mass spectrometry and to apply this analytical method to pharmacokinetic studies. Retention times for glycyrrhizin, isoliquiritigenin, liquiritigenin, and liquiritin were 7.8 min, 4.1 min, 3.1 min, and 2.0 min, respectively, suggesting that the four analytes were well separated without any interfering peaks around the peak elution time. The lower limit of quantitation was 2 ng/mL for glycyrrhizin and 0.2 ng/mL for isoliquiritigenin, liquiritigenin, and liquiritin; the inter- and intra-day accuracy, precision, and stability were less than 15%. Plasma concentrations of glycyrrhizin, isoliquiritigenin, liquiritigenin, and liquiritin were quantified for 24 h after a single oral administration of 1 g/kg GRE to four rats. Among the four components, plasma concentration of glycyrrhizin was the highest and exhibited a long half-life (23.1 ± 15.5 h). Interestingly, plasma concentrations of isoliquiritigenin and liquiritigenin were restored to the initial concentration at 4–10 h after the GRE administration, as evidenced by liquiritin biotransformation into isoliquiritigenin and liquiritigenin, catalyzed by fecal lysate and gut wall enzymes. In conclusion, our analytical method developed for detecting glycyrrhizin, isoliquiritigenin, liquiritigenin, and liquiritin could be successfully applied to investigate their pharmacokinetic properties in rats and would be useful for conducting further studies on the efficacy, toxicity, and biopharmaceutics of GREs and their marker components.
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20
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López-Mejia A, Ortega-Pérez LG, Godinez-Hernández D, Nateras-Marin B, Meléndez-Herrera E, Rios-Chavez P. Chemopreventive effect of Callistemon citrinus (Curtis) Skeels against colon cancer induced by 1,2-dimethylhydrazine in rats. J Cancer Res Clin Oncol 2019; 145:1417-1426. [DOI: 10.1007/s00432-019-02905-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/22/2019] [Indexed: 01/03/2023]
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21
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Alsayari A, Muhsinah AB, Hassan MZ, Ahsan MJ, Alshehri JA, Begum N. Aurone: A biologically attractive scaffold as anticancer agent. Eur J Med Chem 2019; 166:417-431. [PMID: 30739824 DOI: 10.1016/j.ejmech.2019.01.078] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/11/2022]
Abstract
Aurones are very simple, promising anticancer lead molecules containing three rings (A, B and C). A very slight structural variation in the aurones elicits diverse affinity and specificity towards different molecular targets. The present review discusses the design, discovery and development of natural and synthetic aurones as small molecule anticancer agents. Detailed structure-activity relationship and intermolecular interactions at different targets are also discussed. Due to their rare occurrence in nature and minimal mention in literature, the anticancer potential of aurones is rather recent but in constant progress.
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Affiliation(s)
| | | | | | | | | | - Naseem Begum
- College of Applied Medical Sciences, King Khalid University, Abha, 62529, Saudi Arabia
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22
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Qiao YN, Sun Y, Shen T, Zhang JZ, Zhou JC, Li Y, Chen W, Ren ZJ, Li YL, Wang X, Lou HX. Diterpenoids from the Chinese liverwort Frullania hamatiloba and their Nrf2 inducing activities. PHYTOCHEMISTRY 2019; 158:77-85. [PMID: 30476899 DOI: 10.1016/j.phytochem.2018.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/18/2018] [Accepted: 11/04/2018] [Indexed: 06/09/2023]
Abstract
Six previously undescribed labdane diterpenoids, frullanians A-F, along with five known diterpenoids, were isolated from the Chinese liverwort Frullania hamatiloba Stephani. Their structures were determined using NMR data, electronic circular dichroism (ECD) calculations as well as the single crystal X-ray diffraction measurement. NAD(P)H: QR (quinone reductase) assay demonstrated that frullanian D and four known compounds displayed antioxidant effect mediated via Nrf2 (Nuclear factor-erythroid 2-related factor 2) induction. Further investigation of the most bioactive frullanian D in MOVAS cells revealed that it ameliorated H2O2-induced oxidative insults without toxicity by increasing cell viability, attenuating morphological changes, and reducing intracellular ROS production. In addition, frullanian D promoted the nuclear translocation of Nrf2 and upregulated the expressions of antioxidant proteins NQO1 (NAD(P)H quinone oxidoreductase 1) and γ-GCS (γ-glutamyl cysteine synthetase). Docking analysis using MOE software further supported the activation of the Nrf2 pathway by frullanian D.
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Affiliation(s)
- Ya-Nan Qiao
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Yong Sun
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Tao Shen
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Jiao-Zhen Zhang
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Jin-Chuan Zhou
- School of Pharmacy, Linyi University, Linyi 276000, China
| | - Yi Li
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Wang Chen
- Vitamin D Research Institute, Shanxi University of Technology, Hanzhong 723000, China
| | - Zhao-Jie Ren
- Nature Department, Shandong Museum, Jinan 250014, China
| | - Yue-Lan Li
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xue Wang
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Hong-Xiang Lou
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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23
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Reinhardt CR, Hu QH, Bresnahan CG, Hati S, Bhattacharyya S. Cyclic Changes in Active Site Polarization and Dynamics Drive the 'Ping-pong' Kinetics in NRH:Quinone Oxidoreductase 2: An Insight from QM/MM Simulations. ACS Catal 2018; 8:12015-12029. [PMID: 31583178 DOI: 10.1021/acscatal.8b04193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Quinone reductases belong to the family of flavin-dependent oxidoreductases. With the redox active cofactor, flavin adenine dinucleotide, quinone reductases are known to utilize a 'ping-pong' kinetic mechanism during catalysis in which a hydride is bounced back and forth between flavin and its two substrates. However, the continuation of this catalytic cycle requires product displacement steps, where the product of one redox half-cycle is displaced by the substrate of the next half-cycle. Using improved hybrid quantum mechanical/molecular mechanical simulations, both the catalytic hydride transfer and the product displacement reactions were studied in NRH:quinone oxidoreductase 2. Initially, the self-consistent charge-density functional tight binding theory was used to describe flavin ring and the substrate atoms, while embedded in the molecular mechanically-treated solvated active site. Then, for each step of the catalytic cycle, a further improvement of energetics was made using density functional theory-based corrections. The present study showcases an integrated interplay of solvation, protonation, and protein matrix-induced polarization as the driving force behind the thermodynamic wheel of the 'ping-pong' kinetics. Reported here is the first-principles model of the 'ping-pong' kinetics that portrays how cyclic changes in the active site polarization and dynamics govern the oscillatory hydride transfer and product displacement in this enzyme.
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Affiliation(s)
- Clorice R. Reinhardt
- Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
| | - Quin H. Hu
- Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
| | - Caitlin G. Bresnahan
- Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
| | - Sanchita Hati
- Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
| | - Sudeep Bhattacharyya
- Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
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24
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Qiu RY, Wang JR, Parkin KL. Activity-guided isolation of phase II enzyme inducers from buckwheat flour methanolic extracts. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:4911-4918. [PMID: 29569261 DOI: 10.1002/jsfa.9023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 03/13/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Buckwheat is an important alternative crop and a raw material for functional food formulation. Phase II detoxification proteins/enzymes provide cytoprotective roles against oxidative stress and inflammation originating from various stressors. We aimed to identify and characterize potential phase II enzyme inducers from methanolic extracts of buckwheat flour, using an activity-guided fractionation based on the induction of quinone reductase (QR) (EC 1.6.5.2) in Hepa 1c1c7 cells. RESULTS We isolated the QR inducers N-trans-feruloyltyramine (I), syringic acid (II), quercetin (III) and myricetin (IV). The relative QR-inducing ability, as well as the concentration required to double QR specific activity (CD values, in parentheses), decreased in the order: quercetin (3.0 µmol L-1 ) > N-trans-feruloyltyramine (24 µmol L-1 ) > myricetin (58 µmol L-1 ) > syringic acid (5.4 mmol L-1 ). Quercetin and N-trans-feruloyltyramine exhibited the greatest extent of QR induction of an approximately four-fold maximum induction and these compounds also exhibited the greatest values for the ratio of IC50 (i.e. level to reduce viability by 50%): CD values of 11 and > 8.3, respectively, among the four QR inducers isolated. Isobologram analyses for binary combinations of compounds I-IV revealed primarily antagonistic interactions for QR induction. CONCLUSION These findings add to our understanding of the nutraceutical potential of buckwheat as a chemoprophylactic dietary component. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Rong-Ying Qiu
- College of Sciences, Northwest A&F University, Yangling, China
- Department of Food Science, University of Wisconsin-Madison, Madison, WI, USA
| | - Jun-Ru Wang
- College of Sciences, Northwest A&F University, Yangling, China
| | - Kirk L Parkin
- Department of Food Science, University of Wisconsin-Madison, Madison, WI, USA
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25
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Moumad K, Khaali W, Benider A, Ben Ayoub W, Hamdi-Cherif M, Boualga K, Hassen E, Ben Driss EK, Corbex M, Khyatti M. Joint effect of smoking and NQO1 C609T polymorphism on undifferentiated nasopharyngeal carcinoma risk in a North African population. Mol Genet Genomic Med 2018; 6:933-940. [PMID: 30160047 PMCID: PMC6305636 DOI: 10.1002/mgg3.461] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 07/05/2018] [Accepted: 07/20/2018] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) has a higher incidence in North Africa than in most parts of the world. In addition to environmental factors such as Epstein-Barr virus infection and chemical carcinogen exposure, genetic susceptibility has been reported to play a key role in the development of NPC. NAD(P)H: quinone oxidoreductase 1 is a cytosolic enzyme that protects cells from oxidative damage. A C to T transition at position 609 in the NQO1 gene (OMIM: 125860) has been shown to alter the enzymatic activity of the enzyme and has been associated with increased risk to several cancers. This study investigates for the first time the effect of this polymorphism on NPC susceptibility in a North African population. METHODS The NQO1 C609T polymorphism was genotyped using PCR-RFLP in 392 NPC cases and 365 controls from Morocco, Algeria, and Tunisia. RESULTS The allele frequencies and distributions of genotypes did not differ between cases and controls (p > 0.05). When stratifying according to smoking status, we observed two-fold higher NPC risk in ever-smokers carrying the CT or TT genotype. Multiple logistic regression analysis revealed that there was a significant interaction between T allele and smoking status (OR = 1.95, 95% CI = 1.20-3.19; interaction p = 0.007). CONCLUSION In this North African population, the functional NQO1 polymorphism was associated with a significantly higher risk of NPC among smokers and did not affect the risk among nonsmokers.
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Affiliation(s)
- Khalid Moumad
- Oncovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Wafa Khaali
- Oncovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.,Departement of Biology, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Abdellatif Benider
- Service de Radiothérapie, Centre d'oncologie Ibn Rochd, Casablanca, Morocco
| | - Wided Ben Ayoub
- Association Tunisienne de Lutte Contre le Cancer, Tunis, Tunisia
| | | | - Kada Boualga
- Service de Radiothérapie Oncologique, Centre Antic-Cancer de Blida, Blida, Algeria
| | - Elham Hassen
- Molecular Immuno-Oncology Laboratory, Faculty of Medicine, Monastir University, Monastir, Tunisia
| | - El Khalil Ben Driss
- Departement of Biology, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | | | - Meriem Khyatti
- Oncovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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da Silva ES, Oliveira BG, Pereira ACH, Pimentel EF, Pezzuto JM, Lenz D, Kondratyuk TP, Andrade TU, Fronza M, Scherer R, Maia JF, Romão W, Alves FDL, Ventura JA, Endringer DC. Induction of NAD (P)H: Quinone reductase 1 (QR1) and antioxidant activities in vitro of ‘Toranja Burarama’ (Citrus maxima
[Burm.] Merr.). Phytother Res 2018; 32:2059-2068. [DOI: 10.1002/ptr.6149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/30/2018] [Accepted: 06/10/2018] [Indexed: 01/29/2023]
Affiliation(s)
- Elysiane S. da Silva
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Bruno G. Oliveira
- Laboratório de Petroleômica e Forense, Departamento de Química; Universidade Federal do Espírito Santo; Vitória Espírito Santo Brazil
| | - Ana Claudia H. Pereira
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Elisângela F. Pimentel
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - John M. Pezzuto
- Arnold and Marie Schwartz College of Pharmacy and Health Sciences; Long Island University; Brooklyn New York USA
| | - Dominik Lenz
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Tamara P. Kondratyuk
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy; University of Hawai'i at Hilo; Hilo Hawaii USA
| | - Tadeu U. Andrade
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Marcio Fronza
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Rodrigo Scherer
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - June F. Maia
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
| | - Wanderson Romão
- Laboratório de Petroleômica e Forense, Departamento de Química; Universidade Federal do Espírito Santo; Vitória Espírito Santo Brazil
| | - Flávio de L. Alves
- Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural (INCAPER); Vitória Espírito Santo Brazil
| | - José A. Ventura
- Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural (INCAPER); Vitória Espírito Santo Brazil
| | - Denise C. Endringer
- Programa de Pós-Graduação em Ciências Farmacêuticas; Universidade Vila Velha; Vila Velha Espírito Santo Brazil
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27
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Ndongo JT, Mbing JN, Monteillier A, Tala MF, Rütten M, Mombers D, Cuendet M, Pegnyemb DE, Dittrich B, Laatsch H. Carbazole-, Aspidofractinine-, and Aspidocarpamine-Type Alkaloids from Pleiocarpa pycnantha. JOURNAL OF NATURAL PRODUCTS 2018; 81:1193-1202. [PMID: 29664292 DOI: 10.1021/acs.jnatprod.7b00958] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Three new alkaloids, janetinine (1a), pleiokomenine A (2), and huncaniterine B (3a), and 13 known compounds, pleiomutinine (3b), huncaniterine A (3c), 1-carbomethoxy-β-carboline (4), evoxanthine (5), deformyltalbotine acid lactone (6), pleiocarpamine (7), N4-methyl-10-hydroxygeissoschizol (8), spegatrine (9), neosarpagine (10), aspidofractinine (11), N1-methylkopsinin (12), pleiocarpine (13), and N1-methylkopsinin- N4-oxide (14), were isolated from the stem bark of Pleiocarpa pycnantha. Janetinine (1a) is a carbazole alkaloid; in pleiokomenine A (2), two aspidofractinine-type alkaloids are bridged by a methylene unit in an unprecedented way, and huncaniterine B (3a) is a pleiocarpamine-aspidofractinine-type dimer. The structures and relative configurations of these compounds were elucidated on the basis of NMR and MS analyses. Their absolute configurations were defined by means of experimental and calculated ECD data, and additionally, the structures of 5 and 13 were determined by single crystal X-ray diffraction. Compounds 1a, 2, 3b, 4, 6, 9, and 12 displayed cancer chemopreventive properties through either quinone reductase induction ( CD = 30.7, 30.2, 29.9, 43.5, and 36.7 μM for 1a, 4, 6, 9, and 12, respectively) and/or NF-κB inhibition with IC50 values of 13.1, 8.4, 9.4, and 8.8 μM for 2, 3b, 6, and 12, respectively.
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Affiliation(s)
- Joseph T Ndongo
- Department of Chemistry, Higher Teacher Training College , University of Yaoundé 1 , P.O. Box 47, Yaoundé , Cameroon
- Institute of Organic and Biomolecular Chemistry, University of Göttingen , Tammannstrasse 2 , D-37077 Göttingen , Germany
| | - Joséphine N Mbing
- Department of Organic Chemistry, Faculty of Science , University of Yaoundé 1 , P.O. Box 812, Yaoundé , Cameroon
| | - Aymeric Monteillier
- School of Pharmaceutical Sciences , University of Geneva, University of Lausanne , Rue Michel-Servet 1 , CH-1211 Genève 4 , Switzerland
| | - Michel F Tala
- Institute of Organic and Biomolecular Chemistry, University of Göttingen , Tammannstrasse 2 , D-37077 Göttingen , Germany
| | - Michael Rütten
- Institute of Inorganic and Structural Chemistry, Heinrich-Heine University Düsseldorf , Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Daniel Mombers
- Institute of Inorganic and Structural Chemistry, Heinrich-Heine University Düsseldorf , Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Muriel Cuendet
- School of Pharmaceutical Sciences , University of Geneva, University of Lausanne , Rue Michel-Servet 1 , CH-1211 Genève 4 , Switzerland
| | - Dieudonné E Pegnyemb
- Department of Organic Chemistry, Faculty of Science , University of Yaoundé 1 , P.O. Box 812, Yaoundé , Cameroon
| | - Birger Dittrich
- Institute of Inorganic and Structural Chemistry, Heinrich-Heine University Düsseldorf , Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Hartmut Laatsch
- Institute of Organic and Biomolecular Chemistry, University of Göttingen , Tammannstrasse 2 , D-37077 Göttingen , Germany
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28
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Fortin O, Aguilar-Uscanga BR, Vu KD, Salmieri S, Lacroix M. Effect of Saccharomyces Boulardii Cell Wall Extracts on Colon Cancer Prevention in Male F344 Rats Treated with 1,2-Dimethylhydrazine. Nutr Cancer 2018; 70:632-642. [DOI: 10.1080/01635581.2018.1460672] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Olivier Fortin
- INRS-Institut Armand-Frappier, Research Laboratories in Sciences Applied to Food, Laval, Quebec, Canada
| | - Blanca R. Aguilar-Uscanga
- Laboratorio de Microbiología Industrial, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara (UdG), Jalisco, Mexico
| | - Khanh D. Vu
- INRS-Institut Armand-Frappier, Research Laboratories in Sciences Applied to Food, Laval, Quebec, Canada
| | - Stephane Salmieri
- INRS-Institut Armand-Frappier, Research Laboratories in Sciences Applied to Food, Laval, Quebec, Canada
| | - Monique Lacroix
- INRS-Institut Armand-Frappier, Research Laboratories in Sciences Applied to Food, Laval, Quebec, Canada
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29
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Valli M, Russo HM, Bolzani VS. The potential contribution of the natural products from Brazilian biodiversity to bioeconomy. AN ACAD BRAS CIENC 2018; 90:763-778. [PMID: 29668803 DOI: 10.1590/0001-3765201820170653] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/20/2017] [Indexed: 01/05/2023] Open
Abstract
The development of our society has been based on the use of biodiversity, especially for medicines and nutrition. Brazil is the nation with the largest biodiversity in the world accounting for more than 15% of all living species. The devastation of biodiversity in Brazil is critical and may not only cause the loss of species and genes that encode enzymes involved in the complex metabolism of organisms, but also the loss of a rich chemical diversity, which is a potential source for bioeconomy based on natural products and new synthetic derivatives. Bioeconomy focus on the use of bio-based products, instead of fossil-based ones and could address some of the important challenges faced by society. Considering the chemical and biological diversity of Brazil, this review highlights the Brazilian natural products that were successfully used to develop new products and the value of secondary metabolites from Brazilian biodiversity with potential application for new products and technologies. Additionally, we would like to address the importance of new technologies and scientific programs to support preservation policies, bioeconomy and strategies for the sustainable use of biodiversity.
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Affiliation(s)
- Marilia Valli
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Av. Prof. Francisco Degni, 55, 14801-970 Araraquara, SP, Brazil
| | - Helena M Russo
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Av. Prof. Francisco Degni, 55, 14801-970 Araraquara, SP, Brazil
| | - Vanderlan S Bolzani
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Av. Prof. Francisco Degni, 55, 14801-970 Araraquara, SP, Brazil
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30
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Prior AM, Yu X, Park EJ, Kondratyuk TP, Lin Y, Pezzuto JM, Sun D. Structure-activity relationships and docking studies of synthetic 2-arylindole derivatives determined with aromatase and quinone reductase 1. Bioorg Med Chem Lett 2017; 27:5393-5399. [PMID: 29153737 PMCID: PMC5705205 DOI: 10.1016/j.bmcl.2017.11.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 01/02/2023]
Abstract
In our ongoing effort of discovering anticancer and chemopreventive agents, a series of 2-arylindole derivatives were synthesized and evaluated toward aromatase and quinone reductase 1 (QR1). Biological evaluation revealed that several compounds (e.g., 2d, IC50 = 1.61 μM; 21, IC50 = 3.05 μM; and 27, IC50 = 3.34 μM) showed aromatase inhibitory activity with half maximal inhibitory concentration (IC50) values in the low micromolar concentrations. With regard to the QR1 induction activity, 11 exhibited the highest QR1 induction ratio (IR) with a low concentration to double activity (CD) value (IR = 8.34, CD = 2.75 μM), while 7 showed the most potent CD value of 1.12 μM. A dual acting compound 24 showed aromatase inhibition (IC50 = 9.00 μM) as well as QR1 induction (CD = 5.76 μM) activities. Computational docking studies using CDOCKER (Discovery Studio 3.5) provided insight in regard to the potential binding modes of 2-arylindoles within the aromatase active site. Predominantly, the 2-arylindoles preferred binding with the 2-aryl group toward a small hydrophobic pocket within the active site. The C-5 electron withdrawing group on indole was predicted to have an important role and formed a hydrogen bond with Ser478 (OH). Alternatively, meta-pyridyl analogs may orient with the pyridyl 3'-nitrogen coordinating with the heme group.
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Affiliation(s)
- Allan M Prior
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Xufen Yu
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Eun-Jung Park
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA; Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY 11201, USA
| | - Tamara P Kondratyuk
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Yan Lin
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - John M Pezzuto
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA; Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY 11201, USA
| | - Dianqing Sun
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA.
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31
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Ndongo JT, Mbing JN, Tala MF, Monteillier A, Pegnyemb DE, Cuendet M, Laatsch H. Indoline alkaloids from Tabernaemontana contorta with cancer chemopreventive activity. PHYTOCHEMISTRY 2017; 144:189-196. [PMID: 28950224 DOI: 10.1016/j.phytochem.2017.09.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 09/13/2017] [Accepted: 09/16/2017] [Indexed: 06/07/2023]
Abstract
Two bisindoline alkaloids, contortarine A, 16-epi-pleiomutinine and a reaction product of pleiomutinine, namely N4-chloromethyl-pleiomutinine, were isolated from the roots of Tabernaemontana contorta Stapf. together with five known compounds: pleiomutinine, 1-carbomethoxy-β-carboline, strictosidine lactam, pleiocarpamine, and pleiocarpine. The structures and relative configuration of these alkaloids were determined by extensive 1D and 2D NMR, and MS measurements. The absolute configuration of these compounds was determined by comparison of experimental and calculated ECD spectra. Among the isolated compounds, contortarine A, 1-carbomethoxy-β-carboline and strictosidine lactam presented cancer chemopreventive properties through either quinone reductase (QR) induction with CD values of 16.0 ± 2.5, 30.2 ± 6.1 and 23.1 ± 4.6 μM, respectively, while pleiomutinine and 16-epi-pleiomutinine displayed the inhibition of TNF-α induced NF-κB activity with IC50 at 11.7 ± 2.6 and 3.4 ± 1.1 μM, respectively.
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Affiliation(s)
- Joseph Thierry Ndongo
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé 1, P. O. Box 47, Yaoundé, Cameroon; University of Goettingen, Institute of Organic and Biomolecular Chemistry, Tammannstrasse 2, D-37077 Goettingen, Germany.
| | - Joséphine Ngo Mbing
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Michel Feussi Tala
- University of Goettingen, Institute of Organic and Biomolecular Chemistry, Tammannstrasse 2, D-37077 Goettingen, Germany
| | - Aymeric Monteillier
- Section des Sciences Pharmaceutiques, University of Geneva, University of Lausanne, Rue Michel-Servet 1, CH-1211 Genève 4, Switzerland
| | - Dieudonné Emmanuel Pegnyemb
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Muriel Cuendet
- Section des Sciences Pharmaceutiques, University of Geneva, University of Lausanne, Rue Michel-Servet 1, CH-1211 Genève 4, Switzerland
| | - Hartmut Laatsch
- University of Goettingen, Institute of Organic and Biomolecular Chemistry, Tammannstrasse 2, D-37077 Goettingen, Germany.
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32
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Shin B, Park SH, Kim BY, Jo SI, Lee SK, Shin J, Oh DC. Deinococcucins A-D, Aminoglycolipids from Deinococcus sp., a Gut Bacterium of the Carpenter Ant Camponotus japonicus. JOURNAL OF NATURAL PRODUCTS 2017; 80:2910-2916. [PMID: 29090916 DOI: 10.1021/acs.jnatprod.7b00426] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Four new aminoglycolipids, deinococcucins A-D (1-4), were discovered from a Deinococcus sp. strain isolated from the gut of queen carpenter ants, Camponotus japonicus. The structures of deinococcucins A-D were elucidated as a combination of N-acetyl glucosamine, 2,3-dihydroxypropanoic acid, and an alkyl amine with a C16 or C17 hydrocarbon chain primarily based on 1D and 2D NMR and mass spectroscopic data. The exact location of the olefinic double bond in deinococcucins C and D (3 and 4) was assigned based on the liquid chromatography-mass spectroscopy data obtained after olefin metathesis. The absolute configurations of the N-acetyl glucosamine and 2,3-dihydroxy moieties were determined through gas chromatography-mass spectroscopy analysis of authentic samples and phenylglycine methyl ester-derivatized products, respectively. Deinococcucins A and C displayed significant induction of quinone reductase in murine Hepa-1c1c7 cells.
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Affiliation(s)
- Bora Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - So Hyun Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Byung-Yong Kim
- ChunLab, Inc. , 2477 Nambusunhwan-ro, Seocho-gu, Seoul 06725, Republic of Korea
| | - Shin-Il Jo
- Animal Welfare Division, Seoul Zoo , Seoul Grand Park, 102 Daegongwongwangjang-ro, Gwacheon-si, Gyeonggi-do 13829, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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33
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Li J, Yuan C, Pan L, Benatrehina PA, Chai H, Keller WJ, Naman CB, Kinghorn AD. Bioassay-Guided Isolation of Antioxidant and Cytoprotective Constituents from a Maqui Berry (Aristotelia chilensis) Dietary Supplement Ingredient As Markers for Qualitative and Quantitative Analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8634-8642. [PMID: 28910091 PMCID: PMC5685509 DOI: 10.1021/acs.jafc.7b03261] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bioassay-guided phytochemical investigation of a commercially available maqui berry (Aristotelia chilensis) extract used in botanical dietary supplement products led to the isolation of 16 compounds, including one phenolic molecule, 1, discovered for the first time from a natural source, along with several known compounds, 2-16, including three substances not reported previously in A. chilensis, 2, 14, and 15. Each isolate was characterized by detailed analysis of NMR spectroscopic and HRESIMS data and tested for their in vitro hydroxyl radical scavenging and quinone-reductase inducing biological activities. A sensitive and accurate LC-DAD-MS method for the quantitative determination of the occurrence of six bioactive compounds, 6, 7, 10-12, and 14, was developed and validated using maqui berry isolates purified in the course of this study as authentic standards. The method presented can be utilized for dereplication efforts in future natural product research projects or to evaluate chemical markers for quality assurance and batch-to-batch standardization of this botanical dietary supplement component.
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Affiliation(s)
- Jie Li
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
| | - Chunhua Yuan
- Nuclear Magnetic Resonance Facility, Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
| | - P. Annécie Benatrehina
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
| | - Heebyung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
| | - William J. Keller
- Nature’s Sunshine Products, Inc., 1655 N. Main Street, Spanish Fork, Utah 84660, United States
| | - C. Benjamin Naman
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 W. 12th Ave., Columbus, Ohio 43210, United States
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34
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The Role of Nrf2 in Cardiovascular Function and Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:9237263. [PMID: 29104732 PMCID: PMC5618775 DOI: 10.1155/2017/9237263] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/27/2017] [Indexed: 02/07/2023]
Abstract
Free radicals, reactive oxygen/nitrogen species (ROS/RNS), hydrogen sulphide, and hydrogen peroxide play an important role in both intracellular and intercellular signaling; however, their production and quenching need to be closely regulated to prevent cellular damage. An imbalance, due to exogenous sources of free radicals and chronic upregulation of endogenous production, contributes to many pathological conditions including cardiovascular disease and also more general processes involved in aging. Nuclear factor erythroid 2-like 2 (NFE2L2; commonly known as Nrf2) is a transcription factor that plays a major role in the dynamic regulation of a network of antioxidant and cytoprotective genes, through binding to and activating expression of promoters containing the antioxidant response element (ARE). Nrf2 activity is regulated by many mechanisms, suggesting that tight control is necessary for normal cell function and both hypoactivation and hyperactivation of Nrf2 are indicated in playing a role in different aspects of cardiovascular disease. Targeted activation of Nrf2 or downstream genes may prove to be a useful avenue in developing therapeutics to reduce the impact of cardiovascular disease. We will review the current status of Nrf2 and related signaling in cardiovascular disease and its relevance to current and potential treatment strategies.
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35
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Dietz B, Chen SN, Alvarenga RF, Dong H, Nikolić D, Biendl M, van Breemen RB, Bolton JL, Pauli GF. DESIGNER Extracts as Tools to Balance Estrogenic and Chemopreventive Activities of Botanicals for Women's Health. JOURNAL OF NATURAL PRODUCTS 2017; 80:2284-2294. [PMID: 28812892 PMCID: PMC5765536 DOI: 10.1021/acs.jnatprod.7b00284] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Indexed: 05/22/2023]
Abstract
Botanical dietary supplements contain multiple bioactive compounds that target numerous biological pathways. The lack of uniform standardization requirements is one reason that inconsistent clinical effects are reported frequently. The multifaceted biological interactions of active principles can be disentangled by a coupled pharmacological/phytochemical approach using specialized ("knock-out") extracts. This is demonstrated for hops, a botanical for menopausal symptom management. Employing targeted, adsorbent-free countercurrent separation, Humulus lupulus extracts were designed for pre- and postmenopausal women by containing various amounts of the phytoestrogen 8-prenylnaringenin (8-PN) and the chemopreventive constituent xanthohumol (XH). Analysis of their estrogenic (alkaline phosphatase), chemopreventive (NAD(P)H-quinone oxidoreductase 1 [NQO1]), and cytotoxic bioactivities revealed that the estrogenicity of hops is a function of 8-PN, whereas their NQO1 induction and cytotoxic properties depend on XH levels. Antagonization of the estrogenicity of 8-PN by elevated XH concentrations provided evidence for the interdependence of the biological effects. A designed postmenopausal hop extract was prepared to balance 8-PN and XH levels for both estrogenic and chemopreventive properties. An extract designed for premenopausal women contains reduced 8-PN levels and high XH concentrations to minimize estrogenic while retaining chemopreventive properties. This study demonstrates the feasibility of modulating the concentrations of bioactive compounds in botanical extracts for potentially improved efficacy and safety.
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Affiliation(s)
- Birgit
M. Dietz
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Shao-Nong Chen
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - René F.
Ramos Alvarenga
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Huali Dong
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Dejan Nikolić
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Martin Biendl
- Hopsteiner,
Hallertauer Hopfenveredelung GmbH, Auhofstrasse 16, 84048 Mainburg, Germany
| | - Richard B. van Breemen
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Judy L. Bolton
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
| | - Guido F. Pauli
- UIC/NIH
Center for Botanical Dietary Supplements Research and Center for Natural
Product Technologies, Department of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, University of Illinois
at Chicago, 833 S. Wood
Street, M/C 781, Chicago, Illinois 60612, United
States
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Romano G, Costantini M, Sansone C, Lauritano C, Ruocco N, Ianora A. Marine microorganisms as a promising and sustainable source of bioactive molecules. MARINE ENVIRONMENTAL RESEARCH 2017; 128:58-69. [PMID: 27160988 DOI: 10.1016/j.marenvres.2016.05.002] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/29/2016] [Accepted: 05/01/2016] [Indexed: 06/05/2023]
Abstract
There is an urgent need to discover new drug entities due to the increased incidence of severe diseases as cancer and neurodegenerative pathologies, and reducing efficacy of existing antibiotics. Recently, there is a renewed interest in exploring the marine habitat for new pharmaceuticals also thanks to the advancement in cultivation technologies and in molecular biology techniques. Microorganisms represent a still poorly explored resource for drug discovery. The possibility of obtaining a continuous source of bioactives from marine microorganisms, more amenable to culturing compared to macro-organisms, may be able to meet the challenging demands of pharmaceutical industries. This would enable a more environmentally-friendly approach to drug discovery and overcome the over-utilization of marine resources and the use of destructive collection practices. The importance of the topic is underlined by the number of EU projects funded aimed at improving the exploitation of marine organisms for drug discovery.
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Affiliation(s)
- G Romano
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy.
| | - M Costantini
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | - C Sansone
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | - C Lauritano
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | - N Ruocco
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy; Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia, 80126 Napoli, Italy; Bio-Organic Chemistry Unit, Institute of Biomolecular Chemistry-CNR, Via Campi Flegrei 34, Pozzuoli, Naples 80078, Italy
| | - A Ianora
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
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Jeddi F, Soozangar N, Sadeghi MR, Somi MH, Samadi N. Contradictory roles of Nrf2/Keap1 signaling pathway in cancer prevention/promotion and chemoresistance. DNA Repair (Amst) 2017; 54:13-21. [DOI: 10.1016/j.dnarep.2017.03.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 03/25/2017] [Accepted: 03/26/2017] [Indexed: 12/17/2022]
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Monteillier A, Cretton S, Ciclet O, Marcourt L, Ebrahimi SN, Christen P, Cuendet M. Cancer chemopreventive activity of compounds isolated from Waltheria indica. JOURNAL OF ETHNOPHARMACOLOGY 2017; 203:214-225. [PMID: 28359850 DOI: 10.1016/j.jep.2017.03.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/23/2017] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Waltheria indica L. is traditionally used in several countries against inflammatory related diseases and cancer, mainly as a decoction of the aerial parts. AIM OF THE STUDY The transcription factor NF-κB is known to induce tumor promotion and progression and is considered a major player in inflammation-driven cancers. Therefore, inhibitors of this pathway possess cancer chemopreventive and chemotherapeutic activities. This study aimed first to confirm the use of Waltheria indica as a traditional anti-inflammatory remedy by assessing the NF-κB inhibitory activity and then to identify the major bioactive compounds. The isolated compounds were also tested for their QR inducing property, a complementary strategy in cancer chemoprevention able to target tumor initiation. Finally, the relevance of in vitro results was examined by investigating the occurrence of the active compounds in traditional preparations. MATERIALS AND METHODS Compounds were isolated from the dichloromethane extract of the aerial parts using flash chromatography and semi-preparative HPLC. NF-κB inhibitory activity of pure compounds from Waltheria indica was assessed using a luciferase reporter assay in HEK293 cells. Their QR inducing activity was also assessed in Hepa1c1c7 cells. RESULTS Twenty-nine compounds, of which 5 are new, were obtained from the dichloromethane extract and tested for their cancer chemoprevention activity. Eleven compounds inhibited NF-κB and/or induced QR in the low to mid µM range. Chrysosplenol E (20) was active in both tests. Two of the most potent NF-κB inhibitors, waltherione A (4) and waltherione C (5), as well as 20 were found in the traditional decoction, in which 4 and 5 were major compounds. CONCLUSION The presence of potent NF-κB inhibitors and QR inducing compounds in the decoction of the aerial parts of Waltheria indica supports its traditional use in inflammatory-related diseases and cancer chemoprevention.
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Affiliation(s)
- Aymeric Monteillier
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
| | - Sylvian Cretton
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
| | - Olivier Ciclet
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
| | - Samad Nejad Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran.
| | - Philippe Christen
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
| | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, CMU, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
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Ethyl acetate fraction of Pteris vittata L. alleviates 2‐acetylaminofluorene induced hepatic alterations in male Wistar rats. Biomed Pharmacother 2017; 88:1080-1089. [DOI: 10.1016/j.biopha.2017.01.111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/14/2017] [Accepted: 01/18/2017] [Indexed: 12/19/2022] Open
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Chen X, Liu Z, Meng R, Shi C, Guo N. Antioxidative and anticancer properties of Licochalcone A from licorice. JOURNAL OF ETHNOPHARMACOLOGY 2017; 198:331-337. [PMID: 28111219 DOI: 10.1016/j.jep.2017.01.028] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/03/2017] [Accepted: 01/16/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Licochalcone A (LCA) is a characteristic chalcone that is found in licorice, which is a traditional medicinal plant. In traditional medicine, LCA possesses many potential biological activities, including anti-parasitic, anti-inflammatory and antitumor activities. AIM OF THE STUDY To determine the antioxidant activity of LCA and, on this basis, to investigate the role of its anticancer activity. MATERIALS AND METHODS To validate the antioxidant activity of LCA, the proteins SOD, CAT and GPx1 were analyzed using western blotting and cellular antioxidant activity (CAA) assays. Oxidative free radicals are associated with cancer cells. Therefore, the anticancer activity of LCA was also evaluated. To assess the anticancer activity, cell viability assays were performed and apoptosis was evaluated. In addition, MAPK-related proteins were analyzed using western blotting. RESULTS The experimental data showed that the EC50 of LCA is 58.79±0.05μg/mL and 46.29±0.05μg/mL under the two conditions tested, with or without PBS. In addition, LCA at a concentration of approximately 2-8μg/mL can induce the expression of SOD, CAT and GPx1 proteins. Further, LCA inhibits the growth of HepG2 cells through cell proliferation arrest and the subsequent induction of apoptosis, and LCA attenuated the p38/JNK/ERK signaling pathway in a dose-dependent manner. CONCLUSION The results showed that LCA suppresses the oxidation of cells and markedly inhibits the proliferation of cancer cells. These findings confirm the traditional use of LCA in folk medicine.
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Affiliation(s)
- Xiangrong Chen
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, 130062, China
| | - Zuojia Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
| | - Rizeng Meng
- Jilin Entry-Exit Inspection and Quarantine Bureau, Changchun 130062, China
| | - Ce Shi
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, 130062, China
| | - Na Guo
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, 130062, China.
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Mohamad Shalan NAA, Mustapha NM, Mohamed S. Chronic toxicity evaluation of Morinda citrifolia fruit and leaf in mice. Regul Toxicol Pharmacol 2017; 83:46-53. [DOI: 10.1016/j.yrtph.2016.11.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 11/15/2022]
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Becker TM, Jeffery EH, Juvik JA. Proposed Method for Estimating Health-Promoting Glucosinolates and Hydrolysis Products in Broccoli (Brassica oleracea var. italica) Using Relative Transcript Abundance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:301-308. [PMID: 27992213 DOI: 10.1021/acs.jafc.6b04668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Due to the importance of glucosinolates and their hydrolysis products in human nutrition and plant defense, optimizing the content of these compounds is a frequent breeding objective for Brassica crops. Toward this goal, we investigated the feasibility of using models built from relative transcript abundance data for the prediction of glucosinolate and hydrolysis product concentrations in broccoli. We report that predictive models explaining at least 50% of the variation for a number of glucosinolates and their hydrolysis products can be built for prediction within the same season, but prediction accuracy decreased when using models built from one season's data for prediction of an opposing season. This method of phytochemical profile prediction could potentially allow for lower phytochemical phenotyping costs and larger breeding populations. This, in turn, could improve selection efficiency for phase II induction potential, a type of chemopreventive bioactivity, by allowing for the quick and relatively cheap content estimation of phytochemicals known to influence the trait.
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Affiliation(s)
- Talon M Becker
- Department of Crop Sciences and ‡Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801-3838, United States
| | - Elizabeth H Jeffery
- Department of Crop Sciences and ‡Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801-3838, United States
| | - John A Juvik
- Department of Crop Sciences and ‡Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801-3838, United States
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New hits as phase II enzymes inducers from a focused library with heteroatom-heteroatom and Michael-acceptor motives. Future Sci OA 2016; 1:FSO20. [PMID: 28031894 PMCID: PMC5137958 DOI: 10.4155/fso.15.18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The increased activity of phase-II-detoxification enzymes, such as quinone reductase (QR) and glutation S-transferase (GST), correlates with protection against chemically induced carcinogenesis. Herein we studied 11 different chemotypes, pyrazole, 1,2,4-oxadiazole, 1,2,5-oxadiazole, 1,2,3-thiadiazole, 1,2,4-thiazole, 1,3,4-oxathiazole, thienyl hydrazone, α,β-unsaturated-oxime, α,β-unsaturated-N-oxide, coumarin and α,β-unsaturated-carbonyl, as phase-II enzymes inducers in order to identify new pharmacophores with chemopreventive activity. Fifty-four compounds were analyzed on wild-type mouse-hepatoma Hepa-1c1c7 and on the aryl-hydrocarbon-nuclear-translocator (Arnt)-defective mutant BpRc1 cells. New monofunctional inducers of QR and GST were identified, the 1,2,5-oxadiazol-2-oxide (3), the 1,2,4-triazine-4-oxides (23) and (32) and the tetrahydropyrimidinones (28) and (49). It was confirmed that Nrf2 nuclear translocation is the operative molecular mechanism that allows compound (3) to exert protective effects via expression of downstream phase-II enzymes. Cancer chemoprevention is the prevention, delay or reversal of the carcinogenesis by administration of drugs. A group of chemopreventative agents includes quinone reductase and glutation S-transferase. Herein we have studied 11 chemotypes, trying to identify new pharmacophores for chemopreventives. We found new inducers of quinone reductase and glutation S-transferase, with excellent in vitro chemopreventive indexes, the 1,2,5-oxadiazol-2-oxide (3), the 1,2,4-triazine-4-oxides (23) and (32) and the tetrahydropyrimidinones (28) and (49), confirming that Nrf2 nuclear translocation is the operative molecular mechanism that allows compound (3) to exert protection. We have therefore highlighted good candidates for further in vivo studies of cancer chemopreventive activity.
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Fatima N, Kondratyuk TP, Park EJ, Marler LE, Jadoon M, Qazi MA, Mehboob Mirza H, Khan I, Atiq N, Chang LC, Ahmed S, Pezzuto JM. Endophytic fungi associated with Taxus fuana (West Himalayan Yew) of Pakistan: potential bio-resources for cancer chemopreventive agents. PHARMACEUTICAL BIOLOGY 2016; 54:2547-2554. [PMID: 27159021 DOI: 10.3109/13880209.2016.1170154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
CONTEXT Endophytic fungi, being a prolific source of bioactive secondary metabolites, are of great interest for natural product discovery. OBJECTIVE Isolation and partial characterization of endophytic fungi inhabiting the leaves and woody parts of Taxus fuana Nan Li & R.R. Mill. (Taxaceae) and evaluation of biological activity. MATERIALS AND METHODS Endophytic fungal isolates were identified by molecular analysis of internal transcribed spacer (ITS) regions of 18S rDNA. Extracts of the endophytic fungi cultured on potato dextrose agar and modified medium were evaluated using cancer chemoprevention bioassays [inhibition of TNF-α-induced NFκB, aromatase and inducible nitric oxide synthase (iNOS); induction of quinone reductase 1 (QR1)] and growth inhibition with MCF-7 cells. RESULTS Nine of 15 fungal isolates were identified as belonging to Epicoccum, Mucor, Penicillium, Chaetomium, Paraconiothriym, Plectania or Trichoderma. Five of the 15 extracts inhibited NFκB activity (IC50 values ranging between 0.18 and 17 μg/mL) and five inhibited iNOS (IC50 values ranging between 0.32 and 12.9 μg/mL). In the aromatase assay, only two isolates mediated inhibition (IC50 values 12.2 and 10.5 μg/mL). With QR1 induction, three extracts exhibited significant activity (concentrations to double activity values ranging between 0.20 and 5.5 μg/mL), and five extracts inhibited the growth of MCF-7 cells (IC50 values ranging from 0.56 to 17.5 μg/mL). Six active cultures were derived from woody parts of the plant material. CONCLUSION The endophytic fungi studied are capable of producing pharmacologically active natural compounds. In particular, isolates derived from the wood of Taxus fuana should be prioritized for the isolation and characterization of bioactive constituents.
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Affiliation(s)
- Nighat Fatima
- a Department of Biotechnology , Quaid-i-Azam University , Islamabad , Pakistan
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
| | - Tamara P Kondratyuk
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
| | - Eun-Jung Park
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
| | - Laura E Marler
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
| | - Muniba Jadoon
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Muneer Ahmed Qazi
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Hira Mehboob Mirza
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Ibrar Khan
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Naima Atiq
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Leng Chee Chang
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
| | - Safia Ahmed
- b Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - John M Pezzuto
- c Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawaii at Hilo , Hilo , HI , USA
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Wang W, Li N, Wang J, Chen G, Huang R, Zhao W, Li J, Si Y. Bioactive benzofuran-chalcanes as potential NQO1 inducers from Millettia pulchra (Benth) kurzvar-laxior (Dunn) Z.Wei. PHYTOCHEMISTRY 2016; 131:107-114. [PMID: 27663949 DOI: 10.1016/j.phytochem.2016.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 09/04/2016] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
Five chalcanes ((α'R)-2, α'-dimethoxy-furano-[4″, 5'': 3', 4'] chalcane, (α'R, βR)-2', α', β-trimethoxy-furano-[4″, 5'': 3', 4'] chalcane, (α'S, βR)-2', α', β-trimethoxy-furano-[4″, 5'': 3', 4'] chalcane, (α'R, βR)-2', β-dimethoxy-α'-hydroxyethoxy-furano-[4″, 5'': 3', 4'] chalcane, (α'S, βR)-2', β-dimethoxy-α'-hydroxyethoxy-furano-[4″, 5'': 3', 4'] chalcane) and a flavonoid glycoside (3', 7-dihydroxy-6-methoxy-4', 5'-methylenedioxyisoflavone 6-O-β-D- glucopyranoside), together with 15 known components, were isolated from the leaves of Millettia pulchra (Benth) Kurzvar-laxior (Dunn) Z. Wei, a traditional Zhuang medicine. Their chemical structures were established by extensive analysis of NMR, mass spectrometry and ECD spectra. Furthermore compounds (α'R, βR)-2', β-dimethoxy-α'-hydroxyethoxy-furano-[4″, 5'': 3', 4'] chalcane, (α'S, βR)-2', β-dimethoxy-α'-hydroxyethoxy-furano-[4″, 5'': 3', 4'] chalcane, quercetin, methyl 2-O-β-D-glucopyranosylbenzoate, 6,7-dimethoxy-3',4'-methylenedioxyisoflavone and lyoniresinol were suggested to be potential chemopreventive agents because of their significant activity in inducing NQO1 ([NAD(P)H quinine oxidoreductase 1], a phase II metabolism enzyme).
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Affiliation(s)
- Wenli Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China
| | - Ning Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China.
| | - Jian Wang
- Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China; School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China
| | - Renbin Huang
- Pharmaceutical College, Guangxi Medical University, Nanning, Guangxi 530021, PR China
| | - Weihong Zhao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China
| | - Jiayuan Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China
| | - Yingying Si
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China; Key Laboratory of Structure Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, Wenhua Road 103, Shenyang 110016, PR China
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Dietz BM, Hajirahimkhan A, Dunlap TL, Bolton JL. Botanicals and Their Bioactive Phytochemicals for Women's Health. Pharmacol Rev 2016; 68:1026-1073. [PMID: 27677719 PMCID: PMC5050441 DOI: 10.1124/pr.115.010843] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Botanical dietary supplements are increasingly popular for women's health, particularly for older women. The specific botanicals women take vary as a function of age. Younger women will use botanicals for urinary tract infections, especially Vaccinium macrocarpon (cranberry), where there is evidence for efficacy. Botanical dietary supplements for premenstrual syndrome (PMS) are less commonly used, and rigorous clinical trials have not been done. Some examples include Vitex agnus-castus (chasteberry), Angelica sinensis (dong quai), Viburnum opulus/prunifolium (cramp bark and black haw), and Zingiber officinale (ginger). Pregnant women have also used ginger for relief from nausea. Natural galactagogues for lactating women include Trigonella foenum-graecum (fenugreek) and Silybum marianum (milk thistle); however, rigorous safety and efficacy studies are lacking. Older women suffering menopausal symptoms are increasingly likely to use botanicals, especially since the Women's Health Initiative showed an increased risk for breast cancer associated with traditional hormone therapy. Serotonergic mechanisms similar to antidepressants have been proposed for Actaea/Cimicifuga racemosa (black cohosh) and Valeriana officinalis (valerian). Plant extracts with estrogenic activities for menopausal symptom relief include Glycine max (soy), Trifolium pratense (red clover), Pueraria lobata (kudzu), Humulus lupulus (hops), Glycyrrhiza species (licorice), Rheum rhaponticum (rhubarb), Vitex agnus-castus (chasteberry), Linum usitatissimum (flaxseed), Epimedium species (herba Epimedii, horny goat weed), and Medicago sativa (alfalfa). Some of the estrogenic botanicals have also been shown to have protective effects against osteoporosis. Several of these botanicals could have additional breast cancer preventive effects linked to hormonal, chemical, inflammatory, and/or epigenetic pathways. Finally, although botanicals are perceived as natural safe remedies, it is important for women and their healthcare providers to realize that they have not been rigorously tested for potential toxic effects and/or drug/botanical interactions. Understanding the mechanism of action of these supplements used for women's health will ultimately lead to standardized botanical products with higher efficacy, safety, and chemopreventive properties.
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Affiliation(s)
- Birgit M Dietz
- University of Illinois at Chicago/National Institutes of Health Center for Botanical Dietary Supplements, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
| | - Atieh Hajirahimkhan
- University of Illinois at Chicago/National Institutes of Health Center for Botanical Dietary Supplements, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
| | - Tareisha L Dunlap
- University of Illinois at Chicago/National Institutes of Health Center for Botanical Dietary Supplements, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
| | - Judy L Bolton
- University of Illinois at Chicago/National Institutes of Health Center for Botanical Dietary Supplements, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
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Lee CY, Shin D. Systemic structure–activity relationship study of phenyl polyyne diols as potential chemopreventive agents. Bioorg Med Chem Lett 2016; 26:4907-4910. [DOI: 10.1016/j.bmcl.2016.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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Ren Y, Benatrehina PA, Acuña UM, Yuan C, Chai HB, Ninh TN, Carcache de Blanco EJ, Soejarto DD, Kinghorn AD. Isolation of Bioactive Rotenoids and Isoflavonoids from the Fruits of Millettia caerulea. PLANTA MEDICA 2016; 82:1096-104. [PMID: 27280936 PMCID: PMC4956498 DOI: 10.1055/s-0042-108059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Three new rotenoids (1-3), two new isoflavonoids (4 and 5), and six known analogues (6-11) were isolated from an n-hexane partition of a methanol extract of the fruits of Millettia caerulea, with the structures of the new compounds elucidated by analysis of their spectroscopic data. The relative configurations of the rotenoids were determined by interpretation of their NMR spectroscopic data, and their absolute configurations were established using electronic circular dichroism spectra and specific rotation values. All compounds isolated were evaluated for their cell growth inhibitory activity against the HT-29 human colon cancer cell line, and the known compounds, (-)-3-hydroxyrotenone (6) and (-)-rotenone (7), were found to be potently active. When tested in an NF-κB inhibition assay, compound 6 showed activity. This compound, along with the new compound, (-)-caeruleanone D (1), and the known compound, ichthynone (8), exhibited K-Ras inhibitory potency. Further bioactivity studies showed that the new compounds, (-)-3-deoxycaeruleanone D (2) and (-)-3-hydroxycaeruleanone A (3), and the known compounds 8 and 11 induced quinone reductase in murine Hepa 1c1c7 cells.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - P. Annécie Benatrehina
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ulyana Muñoz Acuña
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Esperanza J. Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja D. Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
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Cabrera M, Mastandrea I, Otero G, Cerecetto H, González M. In vivo phase II-enzymes inducers, as potential chemopreventive agents, based on the chalcone and furoxan skeletons. Bioorg Med Chem 2016; 24:1665-74. [DOI: 10.1016/j.bmc.2016.02.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/20/2016] [Accepted: 02/27/2016] [Indexed: 02/06/2023]
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50
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Wang X, Zhang JZ, Zhou JC, Shen T, Lou HX. Terpenoids from Diplophyllum taxifolium with quinone reductase-inducing activity. Fitoterapia 2016; 109:1-7. [DOI: 10.1016/j.fitote.2015.11.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/26/2015] [Accepted: 11/28/2015] [Indexed: 01/30/2023]
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