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Teixeira CJR, Dos Santos BP, Saraiva CJC, Pedroza HDP, Oloris SCS, Soto-Blanco B. TLC and HPLC methods for the determination of plumbagin for the diagnosis of poisoning by Plumbago scandens L. Toxicon 2024; 239:107634. [PMID: 38307130 DOI: 10.1016/j.toxicon.2024.107634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
Plumbago scandens L. (Plumbaginaceae) occurs in all regions of Brazil. It has been described as toxic to cattle and goats. Caustic lesions in the upper digestive tract characterize poisoning. P. scandens contains a naphthoquinone named plumbagin, which presents high cytotoxic activity. Plumbago auriculata Lam., a widely used ornamental plant, is considered potentially toxic, but there is limited data about its toxicity. This work aimed to validate analytical methodologies for determining the levels of plumbagin in samples of leaves, stems, and rumen content to be used as an auxiliary chemical marker in the laboratory diagnosis of intoxication. One methodology used thin layer chromatography (TLC), and another used high-performance liquid chromatography (HPLC). The presence of palisade grass (Urochloa brizantha (Hochst. ex A.Rich.) R.D.Webster), Guinea grass (Megathyrsus maximus (Jacq.) B.K.Simon & S.W.L.Jacobs), corn silage, and rumen content did not interfere with plumbagin in the two methodologies. The TLC methodology generates qualitative results but is simple to implement and has a low cost. The HPLC methodology showed a limit of detection (LOD) of 0.01 μg/mL and a limit of quantification (LOQ) of 0.05 μg/mL. Leaf and stem samples of P. scandens evaluated showed high levels of plumbagin (0.261 ± 0.087 % and 0.327 ± 0.055 %, respectively). In contrast, leaves of P. auriculata did not show detectable levels of the toxin, and some stem samples showed low levels (up to 0.000114 %). Thus, these methodologies can be used to confirm or rule out the consumption of P. scandens in rumen content from animals suspected of poisoning.
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Affiliation(s)
- Carlos José Rocha Teixeira
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Presidente Antônio Carlos 6627, Belo Horizonte, MG, 31275-013, Brazil
| | - Barbara Pereira Dos Santos
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Presidente Antônio Carlos 6627, Belo Horizonte, MG, 31275-013, Brazil
| | - Carolina Julia Costa Saraiva
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Presidente Antônio Carlos 6627, Belo Horizonte, MG, 31275-013, Brazil
| | - Heloísa de Paula Pedroza
- Centro Universitário Presidente Antônio Carlos (UNIPAC), Rodovia MG 482, Km 3, Conselheiro Lafaiete, MG, Brazil
| | - Silvia Catarina Salgado Oloris
- Serviço de Biologia Celular, Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias (Funed), Rua Conde Pereira Carneiro 80, Belo Horizonte, MG, 30510-010, Brazil
| | - Benito Soto-Blanco
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Presidente Antônio Carlos 6627, Belo Horizonte, MG, 31275-013, Brazil.
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2
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Shimizu N, Shigemitsu H, Kida T, Bach T, Mori T. Visible Light-Induced Regio- and Enantiodifferentiating [2 + 2] Photocycloaddition of 1,4-Naphthoquinones Mediated by Oppositely Coordinating 1,3,2-Oxazaborolidine Chiral Lewis Acid. J Org Chem 2022; 87:8071-8083. [PMID: 35652135 DOI: 10.1021/acs.joc.2c00730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A range of asymmetric photochemical transformations using visible light have recently become considerably attractive. Among the various approaches, chiral Lewis acid association to enones for [2 + 2] and ortho photocycloadditions and oxadi-π-methane rearrangements have shown to be very promising. Naturally, chiral Lewis acid coordination protects one of the prochiral faces of the C═C double bond, which enables an effective enantiodifferentiation in the following bond-forming process(es). Here, we studied regio- and enantiodifferentiating [2 + 2] photocycloaddition reactions of naphthoquinone derivatives mediated by chiral oxazaborolidines. A stereochemical control was quite challenging for the 2-ene-1,4-dione substrate, as a double coordination of Lewis acid essentially cancels out the face selectivity, and a mono-coordination to each carbonyl group leads to an opposite stereochemical outcome. Furthermore, a stepwise coordination in the ground state of Lewis acid in a 1:1 fashion was practically inaccessible. We found that the excited-state decomplexation is a key to accomplish high regio- and enantioselectivities in the photocycloaddition of an ene-dione.
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Affiliation(s)
- Nao Shimizu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hajime Shigemitsu
- Integrated Frontier Research for Medical Science Division Institute for OTRI, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Toshiyuki Kida
- Integrated Frontier Research for Medical Science Division Institute for OTRI, Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, Garching 85747, Germany
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Sharma V, Pugazhenthi G, Vasanth D. Production and characterization of a novel thermostable laccase from Bacillus licheniformis VNQ and its application in synthesis of bioactive 1,4-naphthoquinones. J Biosci Bioeng 2021; 133:8-16. [PMID: 34629297 DOI: 10.1016/j.jbiosc.2021.09.008] [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: 03/09/2021] [Revised: 08/30/2021] [Accepted: 09/11/2021] [Indexed: 10/20/2022]
Abstract
Bacterial laccases have proven to be a potential biocatalyst for various industrial applications due to their remarkable catalytic and stability properties. In this study, a novel thermostable laccase was produced from the bacterium Bacillus licheniformis VNQ by submerged fermentation. The specific activity of crude and purified laccase was found to be 13.17 U mg-1 and 83.47 U mg-1, respectively. The enzyme possessed a molecular mass of ∼48 kDa when characterized by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The optimum temperature and pH for enzyme activity was determined to be 55°C and 5.0, respectively. The enzyme was considered to be thermo-tolerant as it possessed a half-life of 4 h at 70°C. The enzyme was utilized for the oxidative biotransformation of in situ synthesized p-quinones to biologically active compounds, 1,4-naphthoquinone and its derivative. The obtained products were characterized using nuclear magnetic resonance (NMR) spectroscopy and gas chromatography-mass spectrometry (GC-MS) analysis. A high yield of naphthoquinones (74.93 ± 1.2%) with 1,4-naphthoquinone (60.61 ± 1.0%), and its derivative 2-hydroxy-1,4-naphthoquinone (14.32 ± 0.2%) was obtained at the optimized reaction conditions.
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Affiliation(s)
- Vikas Sharma
- Department of Biotechnology, National Institute of Technology Raipur, Raipur, Chhattisgarh 492010, India
| | - Gopal Pugazhenthi
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Dhakshinamoorthy Vasanth
- Department of Biotechnology, National Institute of Technology Raipur, Raipur, Chhattisgarh 492010, India.
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4
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Norman EO, Tuohey H, Pizzi D, Saidah M, Bell R, Brkljača R, White JM, Gasser RB, Taki AC, Urban S. Phytochemical Profiling and Biological Activity of the Australian Carnivorous Plant, Drosera magna. JOURNAL OF NATURAL PRODUCTS 2021; 84:964-971. [PMID: 33631073 DOI: 10.1021/acs.jnatprod.0c00869] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Phytochemical profiling was undertaken on the crude extracts of Drosera magna to determine the nature of the chemical constituents present. In total, three new flavonol diglycosides (1-3), one new flavan-3-ol glycoside (4), and 12 previously reported compounds of the flavonol (5, 9), flavan-3-ol (15), flavanone (8), 1,4-napthoquinone (6, 7, 13, 14), 2,3-dehydroxynapthalene-1,4-dione (10-12), and phenolic acid (16) structure classes were isolated and identified. Compounds 1-9, 13, 17, and 18 were assessed for antimicrobial activity, with compounds 6, 7, 8, and 9 showing significant activity. Compounds 1, 2, and 6 were also evaluated for anthelmintic activity against larval forms of Hemonchus contortus, with compound 6 being active.
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Affiliation(s)
- Edward Owen Norman
- School of Science (Applied Chemistry and Environmental Science), RMIT University, GPO Box 2476 Melbourne, Victoria 3001, Australia
| | - Hayden Tuohey
- School of Science (Applied Chemistry and Environmental Science), RMIT University, GPO Box 2476 Melbourne, Victoria 3001, Australia
| | - David Pizzi
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Milane Saidah
- Aix-Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille 13397, France
| | - Rachael Bell
- School of Science (Applied Chemistry and Environmental Science), RMIT University, GPO Box 2476 Melbourne, Victoria 3001, Australia
| | - Robert Brkljača
- Monash Biomedical Imaging, Monash University, Clayton, Victoria 3168, Australia
| | - Jonathan M White
- School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Robin B Gasser
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Aya C Taki
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Sylvia Urban
- School of Science (Applied Chemistry and Environmental Science), RMIT University, GPO Box 2476 Melbourne, Victoria 3001, Australia
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5
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Quinone-based antibody labeling reagent for enzyme-free chemiluminescent immunoassays. Application to avidin and biotinylated anti-rabbit IgG labeling. Biosens Bioelectron 2020; 160:112215. [DOI: 10.1016/j.bios.2020.112215] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/27/2020] [Accepted: 04/13/2020] [Indexed: 12/16/2022]
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6
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Naphthoquinones isolated from Eleutherine plicata herb: in vitro antimalarial activity and molecular modeling to investigate their binding modes. Med Chem Res 2020. [DOI: 10.1007/s00044-019-02498-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Martucci H, Campit SE, Gee SR, Bray WM, Gokey T, Cada AK, Yen TY, Minoura K, Guliaev AB, Lokey RS, Amagata T. Naphthablins B and C, Meroterpenoids Identified from the Marine Sediment-Derived Streptomyces sp. CP26-58 Using HeLa Cell-Based Cytological Profiling. JOURNAL OF NATURAL PRODUCTS 2017; 80:684-691. [PMID: 28128950 DOI: 10.1021/acs.jnatprod.6b00996] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
HeLa cell-based cytological profiling (CP) was applied to an extract library of marine sediment-derived actinomycetes to discover new cytotoxic secondary metabolites. Among the hit strains, Streptomyces sp. CP26-58 was selected for further investigation to identify its cytotoxic metabolites. CP revealed that the known ionophore tetronasin (1) was responsible for the cytotoxic effect found in the extract. Furthermore, three naphthoquinone meroterpenoids, naphthablin A (2) and two new derivatives designated as naphthablins B (3) and C (4), were isolated from other cytotoxic fractions. The structures of the new compounds were elucidated based on analysis of their HRESIMS and comprehensive NMR data. The absolute configurations of the new compounds were deduced by simulating ECD spectra and calculating potential energies for the model compounds using density function theory (DFT) calculations. Compound 1 showed a significant cytotoxic effect against HeLa cells with an IC50 value of 0.23 μM, and CP successfully clustered 1 with calcium ionophores.
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Affiliation(s)
- Hana Martucci
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Scott E Campit
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Stephanie R Gee
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Walter M Bray
- Department of Chemistry and Biochemistry, University of California, Santa Cruz , 1156 High Street, Santa Cruz, California, 95064, United States
| | - Trevor Gokey
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - A King Cada
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Ten-Yang Yen
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - Katsuhiko Minoura
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Anton B Guliaev
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
| | - R Scott Lokey
- Department of Chemistry and Biochemistry, University of California, Santa Cruz , 1156 High Street, Santa Cruz, California, 95064, United States
| | - Taro Amagata
- Department of Chemistry and Biochemistry, San Francisco State University , 1600 Holloway Avenue, San Francisco, California 94132, United States
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8
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Gowda R, Kardos G, Sharma A, Singh S, Robertson GP. Nanoparticle-Based Celecoxib and Plumbagin for the Synergistic Treatment of Melanoma. Mol Cancer Ther 2016; 16:440-452. [PMID: 28003325 DOI: 10.1158/1535-7163.mct-16-0285] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 11/08/2016] [Accepted: 11/23/2016] [Indexed: 12/19/2022]
Abstract
Using multiple drugs to kill cancer cells can decrease drug resistance development. However, this approach is frequently limited by the bioavailability and toxicity of the combined agents and delivery at ratios to specific locations that synergistically kill cancer cells. Loading the individual agents into a nanoparticle that releases the drugs at synergizing ratios at a single location is one approach to resolve this concern. Celecoxib and plumbagin are two drugs that were identified from a screen to synergistically kill melanoma cells compared with normal cells. Combined use of these agents by traditional approaches was not possible due to poor bioavailability and toxicologic concerns. This study details the development of a nanoliposomal-based agent containing celecoxib and plumbagin, called CelePlum-777, which is stable and releases these drugs at an optimal ratio for maximal synergistic killing efficacy. CelePlum-777 was more effective at killing melanoma than normal cells and inhibited xenograft melanoma tumor growth by up to 72% without apparent toxicity. Mechanistically, the drug combination in CelePlum-777 led to enhanced inhibition of melanoma cell proliferation mediated by decreasing levels of key cyclins important for cancer cell proliferation and survival, which was not observed with the individual agents. Thus, a novel nanoparticle-based drug has been developed containing celecoxib and plumbagin that lacks toxicity and delivers the agents at a synergistically killing drug ratio to kill cancer cells. Mol Cancer Ther; 16(3); 440-52. ©2016 AACR.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gregory Kardos
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Arati Sharma
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Sanjay Singh
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania. .,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania.,Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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9
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Gowda R, Sharma A, Robertson GP. Synergistic inhibitory effects of Celecoxib and Plumbagin on melanoma tumor growth. Cancer Lett 2016; 385:243-250. [PMID: 27769779 DOI: 10.1016/j.canlet.2016.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/22/2016] [Accepted: 10/06/2016] [Indexed: 12/13/2022]
Abstract
Melanoma is a highly drug resistant cancer. To circumvent this problem, a class of synergistically acting drug combinations, which inhibit multiple key pathways in melanoma cells, could be used as one approach for long-term treatment of this deadly disease. A screen has been undertaken on cell lines to identify those that could be combined to synergistically kill melanoma cells. Plumbagin and Celecoxib are two agents that were identified to synergistically kill melanoma cells by inhibiting the COX-2 and STAT3 pathways, which are constitutively activated in up to 70% of melanomas. The combination of these two drugs was more effective at killing melanoma cells than normal cells and decreased cellular proliferation as well as induced apoptosis of cultured cells. The drug combination inhibited development of xenograft melanoma tumors by up to 63% without affecting animal weight or blood biomarkers of organ function, suggesting negligible toxicity. Mechanistically, combination of Celecoxib and Plumbagin decreased melanoma cell proliferation and retarded vascular development of tumors mediated by inhibition of COX-2 and STAT3 leading to decreased levels of key cyclins key on which melanoma cell were dependent for survival.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; The Penn State Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states
| | - Arati Sharma
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; The Penn State Melanoma Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states; Foreman Foundation for Melanoma Research, The Pennsylvania State University College of Medicine, Hershey, PA 17033, United states.
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10
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Chethana BK, Basavanna S, Naik YA. Electrochemical studies on lawsone and its determination in henna (Lawsonia inermis) extract using glassy carbon electrode. JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1134/s1061934814090044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Munir S, Shah A, Rana UA, Shakir I, Zia-ur-Rehman, Shah SM. Probing of the pH-Dependent Redox Mechanism of a Biologically Active Compound, 5,8-Dihydroxynaphthalene-1,4-dione. Aust J Chem 2014. [DOI: 10.1071/ch13373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The redox behaviour of a potential anticancer organic compound, 5,8-dihydroxynaphthalene-1,4-dione (DND), was investigated in 1 : 1 buffered aqueous ethanol using cyclic, differential pulse, and square wave voltammetry. The redox processes were found to occur in a pH-dependent diffusion-controlled manner. Presence of an α-hydroxyl group stabilised semiquinone radical of DND, formed by the gain of 1 e– and 1 H+, prevented the second step reduction, which is in contrast to the general mechanism previously reported for quinines in protic and aprotic media. In addition, our results supported an independent oxidation and reduction process. Square wave voltammetry provided evidence about the reversible and quasi-reversible nature of oxidation and reduction peaks. Based on the voltammetric results, the electrode reaction mechanism of DND was proposed. Parameters including pKa, transfer coefficient, diffusion coefficient, and electron transfer rate constant were evaluated. The values of pKa obtained from cyclic voltammetry and ultraviolet-visible spectroscopy not only agreed with each other, but also with reported values of structurally related compounds evaluated by other techniques.
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12
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Bothiraja C, Pawar AP, Dama GY, Joshi PP, Shaikh KS. Novel solvent‐free gelucire extract of Plumbago zeylanica using non-everted rat intestinal sac method for improved therapeutic efficacy of plumbagin. J Pharmacol Toxicol Methods 2012; 66:35-42. [DOI: 10.1016/j.vascn.2012.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/21/2012] [Accepted: 05/21/2012] [Indexed: 01/10/2023]
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13
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Zohourian TH, Quitain AT, Sasaki M, Goto M. Extraction of Bioactive Compounds from Leaves ofLawsonia inermisby Green Pressurized Fluids. SEP SCI TECHNOL 2012. [DOI: 10.1080/01496395.2011.641056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Neopetrosiquinones A and B, sesquiterpene benzoquinones isolated from the deep-water sponge Neopetrosia cf. proxima. Bioorg Med Chem 2011; 19:6599-603. [PMID: 22014756 DOI: 10.1016/j.bmc.2011.09.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 08/07/2011] [Accepted: 09/14/2011] [Indexed: 11/22/2022]
Abstract
Two new marine-derived sesquiterpene benzoquinones which we designate as neopetrosiquinones A (1) and B (2), have been isolated from a deep-water sponge of the family Petrosiidae. The structures were elucidated on the basis of their spectroscopic data. Compounds 1 and 2 inhibit the in vitro proliferation of the DLD-1 human colorectal adenocarcinoma cell line with IC(50) values of 3.7 and 9.8 μM, respectively, and the PANC-1 human pancreatic carcinoma cell line with IC(50) values of 6.1 and 13.8 μM, respectively. Neopetrosiquinone A (1) also inhibited the in vitro proliferation of the AsPC-1 human pancreatic carcinoma cell line with an IC(50) value of 6.1 μM. The compounds are structurally related to alisiaquinone A, cyclozonarone, and xestoquinone.
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15
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Padhye S, Dandawate P, Yusufi M, Ahmad A, Sarkar FH. Perspectives on medicinal properties of plumbagin and its analogs. Med Res Rev 2010; 32:1131-58. [PMID: 23059762 DOI: 10.1002/med.20235] [Citation(s) in RCA: 202] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Plumbagin is one of the simplest plant secondary metabolite of three major phylogenic families viz. Plumbaginaceae, Droseraceae, and Ebenceae, and exhibits highly potent biological activities, including antioxidant, antiinflammatory, anticancer, antibacterial, and antifungal activities. Recent investigations indicate that these activities arise mainly out of its ability to undergo redox cycling, generating reactive oxygen species and chelating trace metals in biological system. The compound is endowed with a property to inhibit the drug efflux mechanism in drug-resistant bacteria, thereby allowing intracellular accumulation of the potent drug molecules. An interesting bioactivity exhibited by this compound is the elimination of stringent, conjugative, multidrug-resistant plasmids from several bacterial strains including opportunistic bacteria, such as Acinetobacter baumannii. Moreover, plumbagin effectively induces apoptosis and causes cell cycle arrest, which is, in part, due to the inactivation of NF-κB in cancer cells. Therefore, it has been suggested that designing "hybrid drug molecules" of plumbagin by combining it with other appropriate anticancer agents may lead to the generation of novel and potent anticancer drugs with pleiotropic action against human cancers. This comprehensive review is an attempt to understand the chemistry of plumbagin and catalog its biological activities reported to date.
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Affiliation(s)
- Subhash Padhye
- Department of Pathology, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Hudson Webber Cancer Research Center, Detroit, Michigan 48201, USA
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16
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Wijeratne EMK, Paranagama PA, Marron MT, Gunatilaka MK, Arnold AE, Gunatilaka AAL. Sesquiterpene quinones and related metabolites from Phyllosticta spinarum, a fungal strain endophytic in Platycladus orientalis of the Sonoran Desert. JOURNAL OF NATURAL PRODUCTS 2008; 71:218-222. [PMID: 18247573 DOI: 10.1021/np070600c] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Five new metabolites, (+)-(5 S,10 S)-4'-hydroxymethylcyclozonarone ( 1), 3-ketotauranin ( 3), 3alpha-hydroxytauranin ( 4), 12-hydroxytauranin ( 5), and phyllospinarone ( 6), together with tauranin ( 2), were isolated from Phyllosticta spinarum, a fungal strain endophytic in Platycladus orientalis. The structures of the new compounds were determined on the basis of their 1D and 2D NMR spectroscopic data and chemical interconversions. All compounds were evaluated for inhibition of cell proliferation in a panel of five cancer cell lines, and only tauranin ( 2) showed activity. When tested in a flow cytometry-based assay, tauranin induced apoptosis in PC-3M and NIH 3T3 cell lines.
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Affiliation(s)
- E M Kithsiri Wijeratne
- SW Center for Natural Products Research and Commercialization, Office of Arid Lands Studies, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
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Flow Injection Analysis Coupled with Carbon Electrodes as the Tool for Analysis of Naphthoquinones with Respect to Their Content and Functions in Biological Samples. SENSORS 2006. [DOI: 10.3390/s6111466] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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