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Khalifa HA, Sharawy E, Younis EM, Abdelwarith AA, Ibrahim RE, Amer SA, Davies SJ, Abo-Elmaaty AMA. The therapeutic role of Azadirachta indica leaves ethanolic extract against detrimental effects of Aeromonas veronii infection in Nile tilapia, Oreochromis niloticus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024:10.1007/s10695-024-01349-y. [PMID: 38795269 DOI: 10.1007/s10695-024-01349-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 04/18/2024] [Indexed: 05/27/2024]
Abstract
Bacterial pathogens cause high fish mortalities and in turn economic losses in fish farms. Innovative strategies should be applied to control bacterial infections instead of antibiotics to avoid the resistance problem. Consequently, the present investigation studied the curative potential of Azadirachta indica leave ethanolic extract (AILEE) on Aeromonas veronii infection in Oreochromis niloticus. A preliminary trial was assessed to evaluate the curative dose of AILEE which was found to be 2.5 mg/L. One hundred and sixty fish were divided into equal four groups in four replications, where group 1 and group 2 were non-challenged and treated with 0- and 2.5-mg/L AILEE, respectively. Group 3 and group 4 were challenged with A. veronii and treated with 0- and 2.5-mg/L AILEE, respectively for 10 days. A. veronii infection produced severe clinical manifestations and a high mortality rate in the infected fish. Furthermore, the infected fish exhibited a significant rise in the hepatorenal indices (aspartate aminotransferase, alanine aminotransferase, and creatinine), the oxidant biomarker (malondialdehyde), and the stress indicators (glucose and cortisol). A significant reduction in the protein profile and antioxidant/immune parameters (catalase, immunoglobulin M, lysozyme, nitric oxide, and phagocytic activity) was observed in the infected fish. Water application of the infected group to 2.5-mg/L AILEE notably ameliorated the hepatorenal indices, the oxidant biomarker, and the stress indicators. Furthermore, AILEE improved the antioxidant/immune indices. Water application of 2.5-mg/L AILEE could be useful against A. veronii infection in O. niloticus culture.
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Affiliation(s)
- Hesham A Khalifa
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Esraa Sharawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Elsayed M Younis
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Abdelwahab A Abdelwarith
- Department of Zoology, College of Science, King Saud University, PO Box 2455, 11451, Riyadh, Saudi Arabia
| | - Rowida E Ibrahim
- Department of Aquatic Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, P.O. Box 44511, Zagazig, Sharkia, Egypt.
| | - Shimaa A Amer
- Departments of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Simon J Davies
- Aquaculture Nutrition Research Unit ANRU, College of Science and Engineering, Carna Research Station, Ryan Institute, University of Galway, Galway, H91V8Y1, Ireland
| | - Azza M A Abo-Elmaaty
- Department of Pharmacology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
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2
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Rashid A, Lone WI, Dogra P, Rashid S, Bhat BA. HFIP-mediated C-3-alkylation of indoles and synthesis of indolo[2,3- b]quinolines & related natural products. Org Biomol Chem 2024; 22:3502-3509. [PMID: 38618907 DOI: 10.1039/d4ob00414k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
An expeditious metal free C-3 alkylation of indoles and its NIS-mediated deviation to indolo[2,3-b]quinolines is reported. This protocol, executed in aqueous HFIP has broad substrate scope and is well inclined towards the ideas of sustainable chemistry. Applications of these strategies in accessing bioactive natural products like vibrindole, norcryptotakeine, neocryptolepine and indenoindolone scaffolds has also been demonstrated.
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Affiliation(s)
- Auqib Rashid
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India.
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Waseem I Lone
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Preeti Dogra
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
| | - Showkat Rashid
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Bilal A Bhat
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Zúñiga-Miranda J, Guerra J, Mueller A, Mayorga-Ramos A, Carrera-Pacheco SE, Barba-Ostria C, Heredia-Moya J, Guamán LP. Iron Oxide Nanoparticles: Green Synthesis and Their Antimicrobial Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2919. [PMID: 37999273 PMCID: PMC10674528 DOI: 10.3390/nano13222919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/31/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023]
Abstract
The rise of antimicrobial resistance caused by inappropriate use of these agents in various settings has become a global health threat. Nanotechnology offers the potential for the synthesis of nanoparticles (NPs) with antimicrobial activity, such as iron oxide nanoparticles (IONPs). The use of IONPs is a promising way to overcome antimicrobial resistance or pathogenicity because of their ability to interact with several biological molecules and to inhibit microbial growth. In this review, we outline the pivotal findings over the past decade concerning methods for the green synthesis of IONPs using bacteria, fungi, plants, and organic waste. Subsequently, we delve into the primary challenges encountered in green synthesis utilizing diverse organisms and organic materials. Furthermore, we compile the most common methods employed for the characterization of these IONPs. To conclude, we highlight the applications of these IONPs as promising antibacterial, antifungal, antiparasitic, and antiviral agents.
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Affiliation(s)
- Johana Zúñiga-Miranda
- Centro de Investigación Biomédica (CENBIO), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito 170527, Ecuador; (J.Z.-M.); (A.M.-R.); (S.E.C.-P.); (J.H.-M.)
| | - Julio Guerra
- Facultad de Ingeniería en Ciencias Aplicadas, Universidad Técnica del Norte, Ibarra 100107, Ecuador;
| | - Alexander Mueller
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA;
| | - Arianna Mayorga-Ramos
- Centro de Investigación Biomédica (CENBIO), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito 170527, Ecuador; (J.Z.-M.); (A.M.-R.); (S.E.C.-P.); (J.H.-M.)
| | - Saskya E. Carrera-Pacheco
- Centro de Investigación Biomédica (CENBIO), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito 170527, Ecuador; (J.Z.-M.); (A.M.-R.); (S.E.C.-P.); (J.H.-M.)
| | - Carlos Barba-Ostria
- Escuela de Medicina, Colegio de Ciencias de la Salud Quito, Universidad San Francisco de Quito USFQ, Quito 170901, Ecuador;
- Instituto de Microbiología, Universidad San Francisco de Quito USFQ, Quito 170901, Ecuador
| | - Jorge Heredia-Moya
- Centro de Investigación Biomédica (CENBIO), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito 170527, Ecuador; (J.Z.-M.); (A.M.-R.); (S.E.C.-P.); (J.H.-M.)
| | - Linda P. Guamán
- Centro de Investigación Biomédica (CENBIO), Facultad de Ciencias de la Salud Eugenio Espejo, Universidad UTE, Quito 170527, Ecuador; (J.Z.-M.); (A.M.-R.); (S.E.C.-P.); (J.H.-M.)
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Sharma C, Singh D, Srivastava R, Narain Sharma S. Symbiotic Antimicrobial Effects of Cellulose-Based Bio-Nanocomposite for Disease Management of Agricultural Crops. Chem Biodivers 2023; 20:e202300714. [PMID: 37650658 DOI: 10.1002/cbdv.202300714] [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: 05/17/2023] [Revised: 08/13/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023]
Abstract
In the present work, a bionanocomposite for plant crop protection was prepared by non-toxic biocompatible & biodegradable nanomaterials (Cellulose & TiO2 ) to utilize its synergistic effects against antimicrobial pathogens. The commercially available microcrystalline cellulose has been reduced to a nanometric scale regime using acid hydrolysis, while the standard TiO2 nano-powder of particle size ~20 nm has been used to prepare their nanocomposite (NC). The antibacterial studies via agar well diffusion method demonstrated that after 72 h of incubation, parent nanomaterials Ncell and TiO2 were not showing any activity against phytopathogens X. campestris pv. campestris, and Clavibacter while the nanocomposite's NC's were still effective depicting both bacteriostatic and bactericidal actions. However, the bacterial growth of biocontrol P. fluorescence was not affected by Ncell, TiO2 NPs and NC after 72 h of incubation. The antifungal testing results via poison food agar assay method suggest that the nanocomposite, along with Ncell and TiO2 NPs, exhibited strong inhibition of fungal growth of Phytophthora Spp at 0.125 mg/ml concentration while for F. graminearum, similar effect was observed at 0.25 mg/ml concentration. The nanocomposite has proved its potential by exhibiting longer & stronger synergistic effects against plant pathogens as a good antimicrobial agent for protection of agricultural crops.
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Affiliation(s)
- Chhavi Sharma
- CSIR-National Physical Laboratory, New Delhi, 110012, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Dinesh Singh
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Ritu Srivastava
- CSIR-National Physical Laboratory, New Delhi, 110012, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shailesh Narain Sharma
- CSIR-National Physical Laboratory, New Delhi, 110012, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
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Quarshie JT, Fosu K, Offei NA, Sobo AK, Quaye O, Aikins AR. Cryptolepine Suppresses Colorectal Cancer Cell Proliferation, Stemness, and Metastatic Processes by Inhibiting WNT/β-Catenin Signaling. Pharmaceuticals (Basel) 2023; 16:1026. [PMID: 37513937 PMCID: PMC10383422 DOI: 10.3390/ph16071026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/25/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Colorectal cancer (CRC) is the third most frequent cancer and the second leading cause of cancer-related deaths globally. Evidence shows that over 90% of CRC cases are initiated by a deregulated Wingless Integrated Type-1 (WNT)/β-catenin signaling pathway. The WNT/β-catenin pathway also promotes CRC cell proliferation, stemness, and metastasis. Therefore, modulators of the WNT/β-catenin pathway may serve as promising regimens for CRC. This study investigated the effect of cryptolepine-a plant-derived compound-on the WNT/β-catenin pathway in CRC. Two CRC cell lines, COLO205 and DLD1, were treated with cryptolepine or XAV 939 (a WNT inhibitor) in the presence or absence of WNT3a (a WNT activator). Using a tetrazolium-based assay, cryptolepine was found to reduce cell viability in a dose- and time-dependent manner and was a more potent inhibitor of viability than XAV 939. RT-qPCR analyses showed that cryptolepine reverses WNT3a-induced expression of β-catenin, c-MYC, and WISP1, suggesting that cryptolepine inhibits WNT3a-mediated activation of WNT/β-catenin signaling. Cryptolepine also repressed WNT3a-induced OCT4 and CD133 expression and suppressed colony formation of the cells, indicating that cryptolepine inhibits the stemness of CRC cells. Additionally, cryptolepine inhibited WNT3a-induced epithelial-to-mesenchymal transition by reducing the expression of SNAI1 and TWIST1 genes. In a wound healing assay, cryptolepine was found to suppress cell migration under unstimulated and WNT3a-stimulated conditions. Moreover, cryptolepine downregulated WNT3a-induced expression of MMP2 and MMP9 genes, which are involved in cancer cell invasion. Altogether, cryptolepine suppresses CRC cell proliferation, stemness, and metastatic properties by inhibiting WNT3a-mediated activation of the WNT/β-catenin signaling pathway. These findings provide a rationale for considering cryptolepine as a potential WNT inhibitor in CRC.
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Affiliation(s)
- Jude Tetteh Quarshie
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Kwadwo Fosu
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Nicholas Awuku Offei
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Augustine Kojo Sobo
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Osbourne Quaye
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Anastasia Rosebud Aikins
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry Cell and Molecular Biology, University of Ghana, Accra P.O. Box LG 54, Ghana
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6
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Kenderdine T, Fabris D. The multifaceted roles of mass spectrometric analysis in nucleic acids drug discovery and development. MASS SPECTROMETRY REVIEWS 2023; 42:1332-1357. [PMID: 34939674 PMCID: PMC9218015 DOI: 10.1002/mas.21766] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/23/2021] [Accepted: 11/22/2021] [Indexed: 06/07/2023]
Abstract
The deceptively simple concepts of mass determination and fragment analysis are the basis for the application of mass spectrometry (MS) to a boundless range of analytes, including fundamental components and polymeric forms of nucleic acids (NAs). This platform affords the intrinsic ability to observe first-hand the effects of NA-active drugs on the chemical structure, composition, and conformation of their targets, which might affect their ability to interact with cognate NAs, proteins, and other biomolecules present in a natural environment. The possibility of interfacing with high-performance separation techniques represents a multiplying factor that extends these capabilities to cover complex sample mixtures obtained from organisms that were exposed to NA-active drugs. This report provides a brief overview of these capabilities in the context of the analysis of the products of NA-drug activity and NA therapeutics. The selected examples offer proof-of-principle of the applicability of this platform to all phases of the journey undertaken by any successful NA drug from laboratory to bedside, and provide the rationale for its rapid expansion outside traditional laboratory settings in support to ever growing manufacturing operations.
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Affiliation(s)
| | - Dan Fabris
- Corresponding author: 55 North Eagleville Road, A416, Storrs, CT 06269-3060 USA, Phone: (860) 486-2881, Fax: (860) 486-2981,
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7
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Mohamed A, Atta RR, Kotp AA, Abo El-Ela FI, Abd El-Raheem H, Farghali A, Alkhalifah DHM, Hozzein WN, Mahmoud R. Green synthesis and characterization of iron oxide nanoparticles for the removal of heavy metals (Cd 2+ and Ni 2+) from aqueous solutions with Antimicrobial Investigation. Sci Rep 2023; 13:7227. [PMID: 37142660 PMCID: PMC10160056 DOI: 10.1038/s41598-023-31704-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/16/2023] [Indexed: 05/06/2023] Open
Abstract
Clove and green Coffee (g-Coffee) extracts were used to synthesize green iron oxide nanoparticles, which were then used to sorb Cd2+ and Ni2+ ions out of an aqueous solution. Investigations with x-ray diffraction, Fourier-transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and desorption (BET), Zeta potential, and scanning electron microscopy were performed to know and understand more about the chemical structure and surface morphology of the produced iron oxide nanoparticles. The characterization revealed that the main component of iron nanoparticles was magnetite when the Clove extract was used as a reducing agent for Fe3+, but both magnetite and hematite were included when the g-Coffee extract was used. Sorption capacity for metal ions was studied as a function of sorbent dosage, metal ion concentration, and sorption period. The maximum Cd2+ adsorption capacity was 78 and 74 mg/g, while that of Ni2+ was 64.8 and 80 mg/g for iron nanoparticles prepared using Clove and g-Coffee, respectively. Different isotherm and kinetic adsorption models were used to fit experimental adsorption data. Adsorption of Cd2+ and Ni2+ on the iron oxide surface was found to be heterogeneous, and the mechanism of chemisorption is involved in the stage of determining the rate. The correlation coefficient R2 and error functions like RMSE, MES and MAE were used to evaluate the best fit models to the experimental adsorption data. The adsorption mechanism was explored using FTIR analysis. Antimicrobial study showed broad spectrum antibacterial activity of the tested nanomaterials against both Gram positive (S. aureus) (25923) and Gram negative (E. coli) (25913) bacteria with increased activity against Gram positive bacteria than Gram negative one and more activity for Green iron oxide nanoparticles prepared from Clove than g-Coffee one.
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Affiliation(s)
- Abdelrahman Mohamed
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
| | - R R Atta
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt.
- St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia.
| | - Amna A Kotp
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Fatma I Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Hany Abd El-Raheem
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
- Environmental Engineering Program, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12578, Egypt
| | - Ahmed Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Dalal Hussien M Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, B.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Wael N Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Rehab Mahmoud
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
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8
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Geng W, Wang H, Xi J, Jiang R, Guo J, Jiao K, Tang M, Liu Q, Zhang L, Liu H. Palladium-catalyzed cascade cyclization of allenamide with 2-iodoanilines to access functionalized indoloquinolines. Org Biomol Chem 2023; 21:279-283. [PMID: 36484347 DOI: 10.1039/d2ob01770a] [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 novel and efficient palladium-catalyzed cascade cyclization to indoloquinoline derivatives in one pot has been developed by using allenamide derivatives and 2-iodoanilines as the key building blocks. The process involved two cyclizations: intramolecular cyclization/π-allylic substitution and intramolecular 6-endo Heck cyclization. Furthermore, dihydrobenzofuro[2,3-b]quinoline derivatives could also be achieved via this strategy using allenyl ethers instead of allenamides. The readily available substrates, mild conditions, high efficiency and step economy make this strategy a promising method in the synthesis of polycyclic motifs.
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Affiliation(s)
- Wenzhe Geng
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Hui Wang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China. .,Shandong Jincheng Biopharmaceutical Co., Ltd., No. 3 Shuangshan Road of Xingshan, Zibo 255049, P. R. China
| | - Juan Xi
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Ruonan Jiang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Jintao Guo
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Keqiang Jiao
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Mengyao Tang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Qing Liu
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Lizhi Zhang
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
| | - Hui Liu
- School of Chemistry & Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China. .,Shandong Jincheng Biopharmaceutical Co., Ltd., No. 3 Shuangshan Road of Xingshan, Zibo 255049, P. R. China
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Mendes E, Bahls B, Aljnadi IM, Paulo A. Indoloquinolines as scaffolds for the design of potent G-quadruplex ligands. Bioorg Med Chem Lett 2022; 72:128862. [PMID: 35716866 DOI: 10.1016/j.bmcl.2022.128862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 11/19/2022]
Abstract
Indoloquinolines are natural alkaloids with known affinity to DNA and antiproliferative activity against bacteria, parasites, and cancer cells. Due to their non-chiral skeleton, their total synthesis is easy to achieve and throughout the years, many derivatives have been studied for their potential as drugs. Herein we review the indoloquinolines and bioisosters that have been designed, synthesised, and evaluated for their selective binding to G-quadruplex nucleic acid structures, as well as the reported effects in cancer cells. The data collected so far strongly suggest that indoloquinolines are good scaffolds for the development of drugs and probes targeting the G-quadruplex structures, but they also show that this scaffold is still underexplored.
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Affiliation(s)
- Eduarda Mendes
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal
| | - Bárbara Bahls
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal
| | - Israa M Aljnadi
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal
| | - Alexandra Paulo
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, Lisbon 1649-003, Portugal.
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Kumar M, Gupta G, Varghese T, Srivastava PP, Gupta S. Preparation and characterization of glucose-conjugated super-paramagnetic iron oxide nanoparticles (G-SPIONs) for removal of Edwardsiella tarda and Aeromonas hydrophila from water. Microsc Res Tech 2022; 85:1768-1783. [PMID: 35038205 DOI: 10.1002/jemt.24037] [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: 05/23/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 11/09/2022]
Abstract
The present research was conducted to prepare efficient G-SPIONs by co-precipitation to remove Edwardsiella tarda and Aeromonas hydrophila from the aqueous solution. The synthesized G-SPIONs were characterized by UV-Vis spectrophotometer, DLS, FEG-TEM, FT-IR, XRD, and VSM analysis. The results showed that the synthesized G-SPIONs had super-paramagnetic properties (58.31 emu/g) and spherical shape (16 ± 3 nm). The antibacterial activity was assessed in sterilized distilled water at different G-SPIONs concentrations viz. 0, 1.5, 3, 6, 12, 24, 48, 120, and 240 mg/L against E. tarda and A. hydrophila with various bacterial loads viz. 1 × 103 , 1 × 104 , 1 × 105 , 1 × 106 , and 1 × 107 CFU/ml at different time intervals 15, 30, 45, and 60 min. At a lower bacterial load of E. tarda and A. hydrophila 1 × 103 -1 × 104 CFU/ml, 100% bacterial load was removed by 15 min exposure with NPs concentration 6-48 mg/L and 1.5-6 mg/L, respectively. Cent percent bacterial removal was observed in both the bacterial species even at higher bacterial load (1 × 105 -1 × 107 CFU/ml) by increasing exposure time (15-60 min) and nanoparticle concentration as well (24-240 mg/L). At an initial bacterial load of E. tarda and A. hydrophila (1 × 103 -1 × 107 CFU/ml), the EC50 ranged between 0.01-6.51 mg/L and 0.02-3.84 mg/L, respectively, after 15-60 min exposure. Thus, it is concluded that the antibacterial effect of G-SPIONs depends on concentration and exposure time. Hence, G-SPIONs can be used as an antibacterial/biocidal agent to treat Edwardsiellosis and Aeromonosis disease in aquaculture.
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Affiliation(s)
- Munish Kumar
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | - Gyandeep Gupta
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | - Tincy Varghese
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
| | | | - Subodh Gupta
- Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education, Mumbai, India
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11
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Vianney YM, Weisz K. Indoloquinoline Ligands Favor Intercalation at Quadruplex-Duplex Interfaces. Chemistry 2021; 28:e202103718. [PMID: 34905232 PMCID: PMC9303235 DOI: 10.1002/chem.202103718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Indexed: 11/30/2022]
Abstract
Quadruplex‐duplex (Q‐D) junctions are increasingly considered promising targets for medicinal and technological applications. Here, a Q‐D hybrid with a hairpin‐type snapback loop coaxially stacked onto the quadruplex 3’‐outer tetrad was designed and employed as a target structure for the indoloquinoline ligand SYUIQ‐5. NMR spectral analysis demonstrated high‐affinity binding of the ligand at the quadruplex‐duplex interface with association constants determined by isothermal titration calorimetry of about 107 M−1 and large exothermicities ΔH° of −14 kcal/mol in a 120 mM K+ buffer at 40 °C. Determination of the ligand‐bound hybrid structure revealed intercalation of SYUIQ‐5 between 3’‐outer tetrad and the neighboring CG base pair, maximizing π–π stacking as well as electrostatic interactions with guanine carbonyl groups in close vicinity to the positively charged protonated quinoline nitrogen of the tetracyclic indoloquinoline. Exhibiting considerable flexibility, the SYUIQ‐5 sidechain resides in the duplex minor groove. Based on comparative binding studies with the non‐substituted N5‐methylated indoloquinoline cryptolepine, the sidechain is suggested to confer additional affinity and to fix the alignment of the intercalated indoloquinoline aromatic core. However, selectivity for the Q‐D junction mostly relies on the geometry and charge distribution of the indoloquinoline ring system. The presented results are expected to provide valuable guidelines for the design of ligands specifically targeting Q‐D interfaces.
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Affiliation(s)
- Yoanes Maria Vianney
- Universität Greifswald Mathematisch-Naturwissenschaftliche Fakultät: Universitat Greifswald Mathematisch-Naturwissenschaftliche Fakultat, Institut für Biochemie, Felix-Hausdorff-Str. 4, 17489, Greifswald, GERMANY
| | - Klaus Weisz
- Universität Greifswald, Institut für Biochemie, Felix-Hausdorff-Str. 4, 17487, Greifswald, GERMANY
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12
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Aksenov DA, Arutyunov NA, Gasanova AZ, Aksenov NA, Aksenov AV, Lower C, Rubin M. Synthetic studies towards benzofuro[2,3-b]quinoline and 6H-indolo[2,3-b]quinoline cores: Total synthesis of norneocryptolepine and neocryptolepine. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Largy E, König A, Ghosh A, Ghosh D, Benabou S, Rosu F, Gabelica V. Mass Spectrometry of Nucleic Acid Noncovalent Complexes. Chem Rev 2021; 122:7720-7839. [PMID: 34587741 DOI: 10.1021/acs.chemrev.1c00386] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nucleic acids have been among the first targets for antitumor drugs and antibiotics. With the unveiling of new biological roles in regulation of gene expression, specific DNA and RNA structures have become very attractive targets, especially when the corresponding proteins are undruggable. Biophysical assays to assess target structure as well as ligand binding stoichiometry, affinity, specificity, and binding modes are part of the drug development process. Mass spectrometry offers unique advantages as a biophysical method owing to its ability to distinguish each stoichiometry present in a mixture. In addition, advanced mass spectrometry approaches (reactive probing, fragmentation techniques, ion mobility spectrometry, ion spectroscopy) provide more detailed information on the complexes. Here, we review the fundamentals of mass spectrometry and all its particularities when studying noncovalent nucleic acid structures, and then review what has been learned thanks to mass spectrometry on nucleic acid structures, self-assemblies (e.g., duplexes or G-quadruplexes), and their complexes with ligands.
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Affiliation(s)
- Eric Largy
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
| | - Alexander König
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
| | - Anirban Ghosh
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
| | - Debasmita Ghosh
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
| | - Sanae Benabou
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
| | - Frédéric Rosu
- Univ. Bordeaux, CNRS, INSERM, IECB, UMS 3033, F-33600 Pessac, France
| | - Valérie Gabelica
- Univ. Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, IECB, F-33600 Pessac, France
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14
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Gudkov SV, Burmistrov DE, Serov DA, Rebezov MB, Semenova AA, Lisitsyn AB. Do Iron Oxide Nanoparticles Have Significant Antibacterial Properties? ANTIBIOTICS (BASEL, SWITZERLAND) 2021; 10:antibiotics10070884. [PMID: 34356805 DOI: 10.3389/fphy.2021.641481] [Citation(s) in RCA: 134] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/12/2021] [Accepted: 07/18/2021] [Indexed: 05/22/2023]
Abstract
The use of metal oxide nanoparticles is one of the promising ways for overcoming antibiotic resistance in bacteria. Iron oxide nanoparticles (IONPs) have found wide applications in different fields of biomedicine. Several studies have suggested using the antimicrobial potential of IONPs. Iron is one of the key microelements and plays an important role in the function of living systems of different hierarchies. Iron abundance and its physiological functions bring into question the ability of iron compounds at the same concentrations, on the one hand, to inhibit the microbial growth and, on the other hand, to positively affect mammalian cells. At present, multiple studies have been published that show the antimicrobial effect of IONPs against Gram-negative and Gram-positive bacteria and fungi. Several studies have established that IONPs have a low toxicity to eukaryotic cells. It gives hope that IONPs can be considered potential antimicrobial agents of the new generation that combine antimicrobial action and high biocompatibility with the human body. This review is intended to inform readers about the available data on the antimicrobial properties of IONPs, a range of susceptible bacteria, mechanisms of the antibacterial action, dependence of the antibacterial action of IONPs on the method for synthesis, and the biocompatibility of IONPs with eukaryotic cells and tissues.
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Affiliation(s)
- Sergey V Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Dmitriy E Burmistrov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Dmitriy A Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Maksim B Rebezov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia
| | - Anastasia A Semenova
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia
| | - Andrey B Lisitsyn
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia
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15
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Gudkov SV, Burmistrov DE, Serov DA, Rebezov MB, Semenova AA, Lisitsyn AB. Do Iron Oxide Nanoparticles Have Significant Antibacterial Properties? Antibiotics (Basel) 2021; 10:884. [PMID: 34356805 PMCID: PMC8300809 DOI: 10.3390/antibiotics10070884] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/12/2021] [Accepted: 07/18/2021] [Indexed: 02/06/2023] Open
Abstract
The use of metal oxide nanoparticles is one of the promising ways for overcoming antibiotic resistance in bacteria. Iron oxide nanoparticles (IONPs) have found wide applications in different fields of biomedicine. Several studies have suggested using the antimicrobial potential of IONPs. Iron is one of the key microelements and plays an important role in the function of living systems of different hierarchies. Iron abundance and its physiological functions bring into question the ability of iron compounds at the same concentrations, on the one hand, to inhibit the microbial growth and, on the other hand, to positively affect mammalian cells. At present, multiple studies have been published that show the antimicrobial effect of IONPs against Gram-negative and Gram-positive bacteria and fungi. Several studies have established that IONPs have a low toxicity to eukaryotic cells. It gives hope that IONPs can be considered potential antimicrobial agents of the new generation that combine antimicrobial action and high biocompatibility with the human body. This review is intended to inform readers about the available data on the antimicrobial properties of IONPs, a range of susceptible bacteria, mechanisms of the antibacterial action, dependence of the antibacterial action of IONPs on the method for synthesis, and the biocompatibility of IONPs with eukaryotic cells and tissues.
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Affiliation(s)
- Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (D.E.B.); (D.A.S.); (M.B.R.)
| | - Dmitriy E. Burmistrov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (D.E.B.); (D.A.S.); (M.B.R.)
| | - Dmitriy A. Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (D.E.B.); (D.A.S.); (M.B.R.)
| | - Maksim B. Rebezov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (D.E.B.); (D.A.S.); (M.B.R.)
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia; (A.A.S.); (A.B.L.)
| | - Anastasia A. Semenova
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia; (A.A.S.); (A.B.L.)
| | - Andrey B. Lisitsyn
- V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, 109316 Moscow, Russia; (A.A.S.); (A.B.L.)
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16
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Lauria A, La Monica G, Bono A, Martorana A. Quinoline anticancer agents active on DNA and DNA-interacting proteins: From classical to emerging therapeutic targets. Eur J Med Chem 2021; 220:113555. [PMID: 34052677 DOI: 10.1016/j.ejmech.2021.113555] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 12/25/2022]
Abstract
Quinoline is one of the most important and versatile nitrogen heterocycles embodied in several biologically active molecules. Within the numerous quinolines developed as antiproliferative agents, this review is focused on compounds interfering with DNA structure or with proteins/enzymes involved in the regulation of double helix functional processes. In this light, a special focus is given to the quinoline compounds, acting with classical/well-known mechanisms of action (DNA intercalators or Topoisomerase inhibitors). In particular, the quinoline drugs amsacrine and camptothecin (CPT) have been studied as key lead compounds for the development of new agents with improved PK and tolerability properties. Moreover, notable attention has been paid to the quinoline molecules, which are able to interfere with emerging targets involved in cancer progression, as G-quadruplexes or the epigenetic ones (e.g.: histone deacetylase, DNA and histones methyltransferase). The antiproliferative and the enzymatic inhibition data of the reviewed compounds have been analyzed. Furthermore, concerning the SAR (structure-activity relationship) aspects, the most recurrent ligand-protein interactions are summarized, underling the structural requirements for each kind of mechanism of action.
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Affiliation(s)
- Antonino Lauria
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Gabriele La Monica
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Alessia Bono
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy
| | - Annamaria Martorana
- Dipartimento di Scienze e Technologie Biologiche Chimiche e Farmaceutiche "STEBICEF" - University of Palermo, Via Archirafi - 32, 90123, Palermo, Italy.
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17
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El-Readi MZ, Al-Abd AM, Althubiti MA, Almaimani RA, Al-Amoodi HS, Ashour ML, Wink M, Eid SY. Multiple Molecular Mechanisms to Overcome Multidrug Resistance in Cancer by Natural Secondary Metabolites. Front Pharmacol 2021; 12:658513. [PMID: 34093189 PMCID: PMC8176113 DOI: 10.3389/fphar.2021.658513] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/12/2021] [Indexed: 12/20/2022] Open
Abstract
Plant secondary metabolites (SMs) common natural occurrences and the significantly lower toxicities of many SM have led to the approaching development and use of these compounds as effective pharmaceutical agents; especially in cancer therapy. A combination of two or three of plant secondary metabolites together or of one SM with specific anticancer drugs, may synergistically decrease the doses needed, widen the chemotherapeutic window, mediate more effective cell growth inhibition, and avoid the side effects of high drug concentrations. In mixtures they can exert additive or even synergistic activities. Many SM can effectively increase the sensitivity of cancer cells to chemotherapy. In phytotherapy, secondary metabolites (SM) of medicinal plants can interact with single or multiple targets. The multi-molecular mechanisms of plant secondary metabolites to overcome multidrug resistance (MDR) are highlighted in this review. These mechanisms include interaction with membrane proteins such as P-glycoprotein (P-gp/MDR1); an ATP-binding cassette (ABC) transporter, nucleic acids (DNA, RNA), and induction of apoptosis. P-gp plays an important role in the development of MDR in cancer cells and is involved in potential chemotherapy failure. Therefore, the ingestion of dietary supplements, food or beverages containing secondary metabolites e.g., polyphenols or terpenoids may alter the bioavailability, therapeutic efficacy and safety of the drugs that are P-gp substrates.
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Affiliation(s)
- Mahmoud Zaki El-Readi
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia.,Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Ahmed M Al-Abd
- Department of Pharmaceutical Sciences, College of Pharmacy & Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman, United Arab Emirates.,Pharmacology Department, Medical Division, National Research Centre, Cairo, Egypt
| | - Mohammad A Althubiti
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Riyad A Almaimani
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hiba Saeed Al-Amoodi
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohamed Lotfy Ashour
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, Jeddah, Saudi Arabia.,Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Safaa Yehia Eid
- Department of Biochemistry, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
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18
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Alghazeer R, Azwai S, Garbaj AM, Amr A, Elghmasi S, Sidati M, Yudiati E, Kubbat MG, Eskandrani AA, Shamlan G, Alansari WS. Alkaloids Rich Extracts from Brown Algae Against Multidrug-Resistant Bacteria by Distinctive Mode of Action. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-021-05592-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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19
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Bajaj S, Kumar MS, Peters GJ, Mayur YC. Targeting telomerase for its advent in cancer therapeutics. Med Res Rev 2020; 40:1871-1919. [PMID: 32391613 DOI: 10.1002/med.21674] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 12/24/2022]
Abstract
Telomerase has emerged as an important primary target in anticancer therapy. It is a distinctive reverse transcriptase enzyme, which extends the length of telomere at the 3' chromosomal end, and uses telomerase reverse transcriptase (TERT) and telomerase RNA template-containing domains. Telomerase has a vital role and is a contributing factor in human health, mainly affecting cell aging and cell proliferation. Due to its unique feature, it ensures unrestricted cell proliferation in malignancy and plays a major role in cancer disease. The development of telomerase inhibitors with increased specificity and better pharmacokinetics is being considered to design and develop newer potent anticancer agents. Use of natural and synthetic compounds for the inhibition of telomerase activity can lead to an opening of new vistas in cancer treatment. This review details about the telomerase biochemistry, use of natural and synthetic compounds; vaccines and oncolytic virus in therapy that suppress the telomerase activity. We have discussed structure-activity relationships of various natural and synthetic telomerase inhibitors to help medicinal chemists and chemical biology researchers with a ready reference and updated status of their clinical trials. Suppression of human TERT (hTERT) activity through inhibition of hTERT promoter is an important approach for telomerase inhibition.
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Affiliation(s)
| | | | - G J Peters
- Department of Medical Oncology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Y C Mayur
- SPPSPTM, SVKM's NMIMS, Mumbai, India
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20
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Zhu JK, Gao JM, Yang CJ, Shang XF, Zhao ZM, Lawoe RK, Zhou R, Sun Y, Yin XD, Liu YQ. Design, Synthesis, and Antifungal Evaluation of Neocryptolepine Derivatives against Phytopathogenic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:2306-2315. [PMID: 31995378 DOI: 10.1021/acs.jafc.9b06793] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Neocryptolepine is an alkaloid isolated from traditional African herbal medicine Cryptolepis sanguinolenta, and its broad spectrum of biological activities has been illuminated in past decades. In this study, neocryptolepine and its derivatives (1-49) were designed and synthesized from economical and readily available starting materials. Their structures were confirmed by proton nuclear magnetic resonance, carbon nuclear magnetic resonance, and mass spectrometry. The synthesized compounds were screened for their antifungal profile against six agriculturally important fungi Rhizoctonia solani, Botrytis cinerea (B. cinerea), Fusarium graminearum, Mycosphaerella melonis, Sclerotinia sclerotiorum, and Magnaporthe oryzae. The results of in vitro assay revealed that compounds 5, 21, 24, 35, 40, 45, and 47 presented remarkable antifungal activity against the fungi tested with EC50 values lower than 1 μg/mL. Significantly, compound 24 displayed the most effective inhibitory potency against B. cinerea (EC50 = 0.07 μg/mL), and the data from in vivo experiments revealed that compound 24 demonstrated comparable protective activity with the positive control boscalid. Preliminary mechanism studies indicated that compound 24 showed impressive spore germination inhibitory effectiveness and lower cytotoxicity than azoxystrobin, imparted on normal function of the cell membrane and cell wall, and arrested the normal function of the nucleus. Besides the excellent inhibitory activity against agriculturally important phytopathogenic fungi tested, the designed assemblage possesses several benefits with a high profile of variation in synthesized molecules, the ease of synthesis, and good cost-effectiveness of commercially available synthetic reagents, all of these have highlighted the potential worth of compound 24 as a new and highly efficient agricultural fungicide.
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Affiliation(s)
- Jia-Kai Zhu
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Jian-Mei Gao
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Cheng-Jie Yang
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Xiao-Fei Shang
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Zhong-Min Zhao
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Raymond Kobla Lawoe
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Rui Zhou
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Yu Sun
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Xiao-Dan Yin
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy , Lanzhou University , Lanzhou 730000 , People's Republic of China
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21
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Yildiz U, Kandemir I, Cömert F, Akkoç S, Coban B. Synthesis of naphthalimide derivatives with potential anticancer activity, their comparative ds- and G-quadruplex-DNA binding studies and related biological activities. Mol Biol Rep 2020; 47:1563-1572. [PMID: 32095985 DOI: 10.1007/s11033-019-05239-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/22/2019] [Accepted: 12/16/2019] [Indexed: 01/12/2023]
Abstract
Two new cytotoxic 1,8-naphthalimide derivatives have been synthesized and characterized. Their biological activities as cytotoxicity and antimicrobial activities and inhibitory activities against DNA-polymerase were evaluated. The interactions of compounds with double-stranded- and quadruple-DNA have been studied by UV-Vis, fluorescent intercalator displacement, competition dialysis, circular dichroism and the findings were compared with the parent naphthalimide and the other compounds. The results show that both compounds (1 and 2) and the parent compound NI have strong cytotoxic activities against Beas-2B, MCF-7, HepG2 and MDA-MB-231 cancer cell lines, antimicrobial activities against Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212 and inhibitory activities towards Taq-polymerase and transcriptase. These novel cationic compounds 1 and 2 can stabilize G-quadruplexes DNA according to thermal denaturation experiments, they change the 3D structure of the DNA (see details in CD experiments) and they exhibit different binding affinities for q-DNA and ds-DNA revealed by spectrophotometric titrations and competitive dialysis studies.
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Affiliation(s)
- Ufuk Yildiz
- Department of Chemistry, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, 67100, Zonguldak, Turkey
| | - Irfan Kandemir
- Department of Biology, Faculty of Science, Ankara University, 06100, Tandoğan, Ankara, Turkey
| | - Füsun Cömert
- Department of Microbiology, Faculty of Medicine, Bulent Ecevit University, 67600, Kozlu, Zonguldak, Turkey
| | - Senem Akkoç
- Department of Chemistry, Faculty of Science, Erciyes University, 38030, Melikgazi, Kayseri, Turkey.,Faculty of Pharmacy, Süleyman Demirel University, 32260, Isparta, Turkey
| | - Burak Coban
- Department of Chemistry, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, 67100, Zonguldak, Turkey.
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22
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Feng J, Leone J, Schweig S, Zhang Y. Evaluation of Natural and Botanical Medicines for Activity Against Growing and Non-growing Forms of B. burgdorferi. Front Med (Lausanne) 2020; 7:6. [PMID: 32154254 PMCID: PMC7050641 DOI: 10.3389/fmed.2020.00006] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 01/09/2020] [Indexed: 12/14/2022] Open
Abstract
Lyme disease is the most common vector-borne disease in the US and Europe. Although the current recommended Lyme antibiotic treatment is effective for the majority of Lyme disease patients, about 10-20% of patients continue to suffer from persisting symptoms. There have been various anecdotal reports on the use of herbal extracts for treating patients with persisting symptoms with varying degree of improvements. However, it is unclear whether the effect of the herb products is due to their direct antimicrobial activity or their effect on host immune system. In the present study, we investigated the antimicrobial effects of 12 commonly used botanical medicines and three other natural antimicrobial agents for potential anti-Borrelia burgdorferi activity in vitro. Among them, 7 natural product extracts at 1% were found to have good activity against the stationary phase B. burgdorferi culture compared to the control antibiotics doxycycline and cefuroxime. These active botanicals include Cryptolepis sanguinolenta, Juglans nigra (Black walnut), Polygonum cuspidatum (Japanese knotweed), Artemisia annua (Sweet wormwood), Uncaria tomentosa (Cat's claw), Cistus incanus, and Scutellaria baicalensis (Chinese skullcap). In contrast, Stevia rebaudiana, Andrographis paniculata, Grapefruit seed extract, colloidal silver, monolaurin, and antimicrobial peptide LL37 had little or no activity against stationary phase B. burgdorferi. The minimum inhibitory concentration (MIC) values of Artemisia annua, Juglans nigra, and Uncaria tomentosa were quite high for growing B. burgdorferi, despite their strong activity against the non-growing stationary phase B. burgdorferi. On the other hand, the top two active herbs, Cryptolepis sanguinolenta and Polygonum cuspidatum, showed strong activity against both growing B. burgdorferi (MIC = 0.03-0.06% and 0.25-0.5%, respectively) and non-growing stationary phase B. burgdorferi. In subculture studies, only 1% Cryptolepis sanguinolenta extract caused complete eradication, while doxycycline and cefuroxime and other active herbs could not eradicate B. burgdorferi stationary phase cells as many spirochetes were visible after 21-day subculture. Further studies are needed to identify the active constituents of the effective botanicals and evaluate their combinations for more effective eradication of B. burgdorferi in vitro and in vivo. The implications of these findings for improving treatment of persistent Lyme disease are discussed.
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Affiliation(s)
- Jie Feng
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Jacob Leone
- FOCUS Health Group, Naturopathic, Novato, CA, United States
| | - Sunjya Schweig
- California Center for Functional Medicine, Kensington, CA, United States
| | - Ying Zhang
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
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23
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Del Mundo IMA, Vasquez KM, Wang G. Modulation of DNA structure formation using small molecules. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:118539. [PMID: 31491448 DOI: 10.1016/j.bbamcr.2019.118539] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/20/2019] [Accepted: 08/24/2019] [Indexed: 02/06/2023]
Abstract
Genome integrity is essential for proper cell function such that genetic instability can result in cellular dysfunction and disease. Mutations in the human genome are not random, and occur more frequently at "hotspot" regions that often co-localize with sequences that have the capacity to adopt alternative (i.e. non-B) DNA structures. Non-B DNA-forming sequences are mutagenic, can stimulate the formation of DNA double-strand breaks, and are highly enriched at mutation hotspots in human cancer genomes. Thus, small molecules that can modulate the conformations of these structure-forming sequences may prove beneficial in the prevention and/or treatment of genetic diseases. Further, the development of molecular probes to interrogate the roles of non-B DNA structures in modulating DNA function, such as genetic instability in cancer etiology are warranted. Here, we discuss reported non-B DNA stabilizers, destabilizers, and probes, recent assays to identify ligands, and the potential biological applications of these DNA structure-modulating molecules.
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Affiliation(s)
- Imee M A Del Mundo
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723, USA
| | - Karen M Vasquez
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723, USA.
| | - Guliang Wang
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd., Austin, TX 78723, USA
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Satange R, Chang CK, Hou MH. A survey of recent unusual high-resolution DNA structures provoked by mismatches, repeats and ligand binding. Nucleic Acids Res 2019; 46:6416-6434. [PMID: 29945186 PMCID: PMC6061790 DOI: 10.1093/nar/gky561] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/08/2018] [Indexed: 12/20/2022] Open
Abstract
The structure of the DNA duplex is arguably one of the most important biological structures elucidated in modern history. DNA duplex structure is closely associated with essential biological functions such as DNA replication and RNA transcription. In addition to the classical A-, B- and Z-DNA conformations, DNA duplexes are capable of assuming a variety of alternative conformations depending on the sequence and environmental context. A considerable number of these unusual DNA duplex structures have been identified in the past decade, and some of them have been found to be closely associated with different biological functions and pathological conditions. In this manuscript, we review a selection of unusual DNA duplex structures, particularly those originating from base pair mismatch, repetitive sequence motifs and ligand-induced structures. Although the biological significance of these novel structures has not yet been established in most cases, the illustrated conformational versatility of DNA could have relevance for pharmaceutical or nanotechnology development. A perspective on the future directions of this field is also presented.
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Affiliation(s)
- Roshan Satange
- Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, Taiwan.,Ph.D. Program in Medical Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Chung-Ke Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ming-Hon Hou
- Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, Taiwan.,Ph.D. Program in Medical Biotechnology, National Chung Hsing University, Taichung, Taiwan
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Structural Modifications of Nature-Inspired Indoloquinolines: A Mini Review of Their Potential Antiproliferative Activity. Molecules 2019; 24:molecules24112121. [PMID: 31195640 PMCID: PMC6600460 DOI: 10.3390/molecules24112121] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/27/2019] [Accepted: 06/01/2019] [Indexed: 02/04/2023] Open
Abstract
Cryptolepine, neocryptolepine and isocryptolepine are naturally occurring indoloquinoline alkaloids with various spectrum of biological properties. Structural modification is an extremely effective means to improve their bioactivities. This review enumerates several neocryptolepine and isocryptolepine analogues with potent antiproliferative activity against MV4-11 (leukemia), A549 (lung cancer), HCT116 (colon cancer) cell lines in vitro. Its activity towards normal mouse fibroblasts BALB/3T3 was also evaluated. Furthermore, structure activity relationships (SAR) are briefly discussed. The anticancer screening of neocryptolepine derivatives was performed in order to determine their cytotoxic and growth inhibitory activities across the JFCR39 cancer cell line panel.
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Neupane BP, Chaudhary D, Paudel S, Timsina S, Chapagain B, Jamarkattel N, Tiwari BR. Himalayan honey loaded iron oxide nanoparticles: synthesis, characterization and study of antioxidant and antimicrobial activities. Int J Nanomedicine 2019; 14:3533-3541. [PMID: 31190810 PMCID: PMC6529734 DOI: 10.2147/ijn.s196671] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 04/01/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Himalayan honey, a natural product of wild honey bees found in the Himalayan mountains of Nepal, has been used in medicine for many years. The successful development of nanotechnology and beneficial effects of honey would bring a new opportunity to synthesize hybrid nanomaterials for biomedical applications. Thus, the purpose of this study was to load Himalayan honey onto iron oxide nanoparticles (IO-NPs) and study their antioxidant and antimicrobial activities. Methods: Himalayan honey loaded iron oxide nanoparticles (HHLIO-NPs) were synthesized and X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses were performed for characterization. UV-VIS spectra confirmed the loading of honey onto nanoparticles. The antioxidant activity of these nanoparticles was studied against 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical system. We also tested antimicrobial activity of HHLIO-NPs using well diffusion method towards both Gram-positive and Gram-negative bacterial strains of Staphylococus aureus & Escherichia coli. Results: From XRD analysis, the average particle size was found to be 33-40 nm. The SEM images show needle shape porous structures of HHLIO-NPs compared to free IO-NPs indicating the surfactant-like behaviour of honey. In DPPH radical system, the scavenging activities of Himalayan honey (HH), free IO-NPs and HHLIO-NPs ranged 7.93-35.99%, 11.02-52.02% and 16.10-80.52% respectively, with corresponding IC50 values of 1.36 mg/mL, 1.09 mg/mL and 0.52 mg/mL. The antimicrobial property of all test samples showed a noteworthy inhibition on both bacterial strains. However, the HH and HHLIO-NPs exhibited strong antibacterial activity against E. coli. Conclusion: This work reveals that the biological activity of HH is enhanced significantly after loading into IO-NPs. Thus, the HHLIO-NPs would be a promising alternative for antioxidant and antimicrobial agents.
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Affiliation(s)
- Bishnu Prasad Neupane
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Dinesh Chaudhary
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Sanjita Paudel
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Sangita Timsina
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Bipin Chapagain
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Nirmala Jamarkattel
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
| | - Bishnu Raj Tiwari
- School of Health and Allied Sciences, Faculty of Health Sciences, Pokhara University, Pokhara, Kaski, Nepal
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Practical Microwave Synthesis of Carbazole Aldehydes for the Development of DNA-Binding Ligands. Molecules 2019; 24:molecules24050965. [PMID: 30857275 PMCID: PMC6429063 DOI: 10.3390/molecules24050965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/25/2019] [Accepted: 03/06/2019] [Indexed: 01/28/2023] Open
Abstract
Microwave formylation of carbazole derivatives was investigated and 3-monoaldehydes were obtained in high yield. A potential DNA-binding ligand, 3-[(3-ethyl)-2-vinylbenzothiazolium]-9-N-ethyl carbazole iodide, was synthesized and characterized including spectral properties (UV-Vis absorption and fluorescence spectra). The binding selectivity and affinity of three carbazole ligands for double-stranded and G-quadruplex DNA structures were studied using a competitive dialysis method in sodium- and potassium-containing buffer solutions.
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Vasantharaj S, Sathiyavimal S, Senthilkumar P, LewisOscar F, Pugazhendhi A. Biosynthesis of iron oxide nanoparticles using leaf extract of Ruellia tuberosa: Antimicrobial properties and their applications in photocatalytic degradation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 192:74-82. [DOI: 10.1016/j.jphotobiol.2018.12.025] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/22/2018] [Accepted: 12/27/2018] [Indexed: 11/16/2022]
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Saqib S, Munis MFH, Zaman W, Ullah F, Shah SN, Ayaz A, Farooq M, Bahadur S. Synthesis, characterization and use of iron oxide nano particles for antibacterial activity. Microsc Res Tech 2018; 82:415-420. [DOI: 10.1002/jemt.23182] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/31/2018] [Accepted: 11/06/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Saddam Saqib
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
- Mohi‐ud‐din Islamic University Azad Jammu and Kashmir Pakistan
- State Key Laboratory of Systematic and Evolutionary BotanyInstitute of Botany, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | | | - Wajid Zaman
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
- State Key Laboratory of Systematic and Evolutionary BotanyInstitute of Botany, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Fazal Ullah
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
- University of Chinese Academy of Sciences Beijing China
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of BiologyChinese Academy of Sciences Chengdu China
| | - Syed Nasar Shah
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
| | - Asma Ayaz
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
| | - Muhammad Farooq
- Department of ChemistryPakistan Institute of Engineering and Applied Science (PIEAS) Islamabad Pakistan
| | - Saraj Bahadur
- Department of Plant SciencesQuaid‐i‐Azam University Islamabad Pakistan
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Abstract
The present review provides a comprehensive overview of the synthetic methods developed
recently for 6H-Indolo[2,3-b]quinoline. The review is classified into the following: 1) inheriting indole
skeleton and constructing quinoline ring; 2) inheriting quinoline skeleton and constructing indole ring,
and 3) convergent strategies constructing both rings simultaneously or step by step. This review
discusses the scope of multifunctional reactivity of indole and quinoline skeleton for constructing the
desired indoloquinolines as explored in various research strategies.
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Affiliation(s)
- Hari K. Kadam
- Department of Chemistry, St. Xavier's College, Mapusa, Goa - 403507, India
| | - Santosh G. Tilve
- Department of Chemistry, Goa University, Taleigao Plateau, Goa - 403206, India
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Gu Y, Lin D, Tang Y, Fei X, Wang C, Zhang B, Zhou J. A light-up probe targeting for Bcl-2 2345 G-quadruplex DNA with carbazole TO. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:180-188. [PMID: 29032342 DOI: 10.1016/j.saa.2017.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 09/25/2017] [Accepted: 10/03/2017] [Indexed: 06/07/2023]
Abstract
As its significant role, the selective recognition of G-quadruplex with specific structures and functions is important in biological and medicinal chemistry. Carbazole derivatives have been reported as a kind of fluorescent probe with many excellent optical properties. In the present study, the fluorescence of the dye (carbazole TO) increased almost 70 fold in the presence of bcl-2 2345 G4 compared to that alone in aqueous buffer condition with almost no fluorescence and 10-30 fold than those in the presence of other DNAs. The binding study results by activity inhibition of G4/Hemin peroxidase experiment, NMR titration and molecular docking simulation showed the high affinity and selectivity to bcl-2 2345 G4 arises from its end-stacking interaction with G-quartet. It is said that a facile approach with excellent sensitive, good selectivity and quick response for bcl-2 2345 G-quadruplex was developed and may be used for antitumor recognition or antitumor agents.
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Affiliation(s)
- Yingchun Gu
- Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing 100190, China; School of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Dayong Lin
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yalin Tang
- Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing 100190, China.
| | - Xuening Fei
- School of Science, Tianjin Chengjian University, Tianjin 300384, China; School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Cuihong Wang
- School of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Baolian Zhang
- School of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Jianguo Zhou
- School of Science, Tianjin Chengjian University, Tianjin 300384, China
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Wang DL, Xu J, Zhang WN, Zhong ZK. One-Pot Synthesis of 6H-Indolo[2,3-b]quinolines from 2-Nitrobenzaldehyde and Indole Derivatives via Domino Reaction. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Ganesan K, Xu B. Telomerase Inhibitors from Natural Products and Their Anticancer Potential. Int J Mol Sci 2017; 19:ijms19010013. [PMID: 29267203 PMCID: PMC5795965 DOI: 10.3390/ijms19010013] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/10/2017] [Accepted: 12/19/2017] [Indexed: 12/25/2022] Open
Abstract
Telomeres and telomerase are nowadays exploring traits on targets for anticancer therapy. Telomerase is a unique reverse transcriptase enzyme, considered as a primary factor in almost all cancer cells, which is mainly responsible to regulate the telomere length. Hence, telomerase ensures the indefinite cell proliferation during malignancy—a hallmark of cancer—and this distinctive feature has provided telomerase as the preferred target for drug development in cancer therapy. Deactivation of telomerase and telomere destabilization by natural products provides an opening to succeed new targets for cancer therapy. This review aims to provide a fundamental knowledge for research on telomere, working regulation of telomerase and its various binding proteins to inhibit the telomere/telomerase complex. In addition, the review summarizes the inhibitors of the enzyme catalytic subunit and RNA component, natural products that target telomeres, and suppression of transcriptional and post-transcriptional levels. This extensive understanding of telomerase biology will provide indispensable information for enhancing the efficiency of rational anti-cancer drug design.
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Affiliation(s)
- Kumar Ganesan
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai 519087, China.
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai 519087, China.
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Synthesis and In Vitro Antiproliferative Activity of 11-Substituted Neocryptolepines with a Branched ω-Aminoalkylamino Chain. Molecules 2017; 22:molecules22111954. [PMID: 29137152 PMCID: PMC6150407 DOI: 10.3390/molecules22111954] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/03/2017] [Accepted: 11/10/2017] [Indexed: 12/02/2022] Open
Abstract
Neocryptolepine, which is a kind of tetracyclic indoloquinoline alkaloid, exhibits the inhibition of topoisomerase II and shows antiproliferative activity. The present study describes the synthesis and antiproliferative evaluation of several neocryptolepine analogues carrying a branched, functionalized dibasic side chain at C11. These 2-substituted 5-methyl-indolo[2,3-b]quinoline derivatives were prepared by nucleophilic aromatic substitution (SNAr) of 11-chloroneocryptolepines with appropriate 1,2- and 1,3-diamines. Some of the 11-(ω-aminoalkylamino) derivatives were further transformed into 11-ureido and thioureido analogues. Many of the prepared neocryptolepine derivatives showed submicromolar antiproliferative activity against the human leukemia MV4-11 cell line. Among them, 11-(3-amino-2-hydroxy)propylamino derivatives 2h and 2k were the most cytotoxic with a mean IC50 value of 0.042 μM and 0.057 μM against the MV4-11 cell line, 0.197 μM and 0.1988 μM against the A549 cell line, and 0.138 μM and 0.117 μM against the BALB/3T3 cell line, respectively.
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Phytochemical and Pharmacological Review of Cryptolepis sanguinolenta (Lindl.) Schlechter. Adv Pharmacol Sci 2017; 2017:3026370. [PMID: 29750083 PMCID: PMC5661077 DOI: 10.1155/2017/3026370] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/14/2017] [Accepted: 09/12/2017] [Indexed: 11/18/2022] Open
Abstract
Ethnopharmacological Relevance Cryptolepis sanguinolenta is a scrambling thin-stemmed shrub found in Africa. Traditionally in West Africa, it is employed in the treatment of malaria, diarrhea, and respiratory conditions. This review discusses the traditional importance as well as the phytochemical, ethnomedical, pharmacological, and toxicological importance of this plant. Materials and Methods Excerpta Medica Database, Google Scholar, Springer, and PubMed Central were the electronic databases used to search for and filter primary studies on Cryptolepis sanguinolenta. Results The detailed review of various studies conducted on C. sanguinolenta and some of its constituents gives an important body of proof of its potential therapeutic benefits and also of its use as a source of lead compounds with therapeutic potentials. Conclusion The review on C. sanguinolenta is important in identifying grey areas in the research on this medicinal plant and also provides comprehensive data thus far to continue research on this plant.
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Rocca R, Talarico C, Moraca F, Costa G, Romeo I, Ortuso F, Alcaro S, Artese A. Molecular recognition of a carboxy pyridostatin toward G-quadruplex structures: Why does it prefer RNA? Chem Biol Drug Des 2017; 90:919-925. [PMID: 28459507 DOI: 10.1111/cbdd.13015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 04/21/2017] [Accepted: 04/25/2017] [Indexed: 01/21/2023]
Abstract
The pyridostatin (PDS) represents the lead compound of a family of G-quadruplex (G4) stabilizing synthetic small molecules based on a N,N'-bis(quinolinyl)pyridine-2,6-dicarboxamide scaffold. Its mechanism of action involves the induction of telomere dysfunction by competing for binding with telomere-associated proteins, such as human POT1. Recently, through a template-directed "in situ" click chemistry approach, a PDS derivative, the carboxypyridostatin (cPDS), was discovered. It has the peculiarity to exhibit high molecular specificity for RNA over DNA G4, while PDS is a good generic RNA and DNA G4-interacting small molecule. Structural data on the binding modes of these compounds are not available, and the selectivity mode of cPDS toward TERRA G4 is unknown too. Therefore, this work is aimed at rationalizing the selectivity of cPDS versus TERRA G4 by means of molecular dynamics and docking simulations, coupled to better understand the binding mode of these compounds to telomeric G4 structures. The comprehensive analysis of cPDS binding mode and its conformational behavior demonstrates the importance of the ligand conformation properties coupled with a remarkable solvation contribution. This work is expected to provide valuable clues for further rational design of novel and selective TERRA G4 binders.
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Affiliation(s)
- Roberta Rocca
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Carmine Talarico
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Federica Moraca
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Giosuè Costa
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Isabella Romeo
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Francesco Ortuso
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Stefano Alcaro
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
| | - Anna Artese
- Laboratory of Medicinal Chemistry, Department of Health Sciences, University of Catanzaro, Catanzaro, Italy
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Njateng GSS, Du Z, Gatsing D, Mouokeu RS, Liu Y, Zang HX, Gu J, Luo X, Kuiate JR. Antibacterial and antioxidant properties of crude extract, fractions and compounds from the stem bark of Polyscias fulva Hiern (Araliaceae). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:99. [PMID: 28173794 PMCID: PMC5297048 DOI: 10.1186/s12906-017-1572-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 01/10/2017] [Indexed: 11/11/2022]
Abstract
BACKGROUND In our previous work, the dichloromethane-methanol (1:1 v/v) extract, fractions and isolated compounds from Polyscias fulva stem bark showed interesting antifungal activity. As a continuity of that work, this study aimed to bring out complementary informations about the antimicrobial properties of P. fulva stem bark that may be useful in the standardization of phytomedicine from this plant. METHODS The antibacterial activities of the crude extract, fractions (n-hexane, ethyl acetate, n-butanol and residual) and isolated compounds from Polyscias fulva stem bark were assayed by broth microdilution techniques. Their antioxidant activity were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH), pyrogallol (superoxide anion) and β-carotene - linoleic acid assays. RESULTS The crude extract presented antibacterial activities against S. typhi (ATCC 6539), E. aerogenes (ATCC 13045), P. aeruginosa (PA01) and E. coli (ATCC 10536) with MIC values of 2000 to 8000 μg/ml. The fractionation led the ethyle acetate and n-butanol fractions relatively more active (MIC = 500 to 1000 μg/ml) as compared to the crude extract. β-sitosterol and 3-O-α-L- arabinopyranosyl-hederagenin were the most active compounds on the tested bacteria with MIC values ranging from 6.25 to 100 μg/ml. The most sensitive was P. aeruginosa (PA01) on which all the tested compounds were active with MICs ranging from 6.25 to 400 μg/ml. Among all the tested substances, the crude extract (RSa50 = 84.86 μg/ml) and the methyl atrarate (RSa50 = 14.77 μg/ml), showed the highest scavenging activities against DPPH free radicals and those arising from the oxidation of the linoleic acid respectively. CONCLUSION From this study, the results obtained reveal that the stem bark of P. fulva possesses antibacterial and antioxidant activities. It may then be useful in the development of an antimicrobial phytomedicine with a large spectrum of actvity endowed with antioxidant properties which can be standardised based on the isolated compounds.
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Affiliation(s)
- Guy Sedar Singor Njateng
- Laboratory of Microbiology and Antimicrobial Substances, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Zhizhi Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Donatien Gatsing
- Laboratory of Microbiology and Antimicrobial Substances, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Raymond Simplice Mouokeu
- Institute of Fisheries and Aquatic Sciences, University of Douala, P.O Box 7236, Douala, Cameroon
| | - Yaping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Hong-Xia Zang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Jianlong Gu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Xiaodong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204 People’s Republic of China
| | - Jules-Roger Kuiate
- Laboratory of Microbiology and Antimicrobial Substances, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
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Syahidah A, Saad CR, Hassan MD, Rukayadi Y, Norazian MH, Kamarudin MS. Phytochemical Analysis, Identification and Quantification of Antibacterial Active Compounds in Betel Leaves, Piper betle Methanolic Extract. Pak J Biol Sci 2017; 20:70-81. [PMID: 29022997 DOI: 10.3923/pjbs.2017.70.81] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND AND OBJECTIVE The problems of bacterial diseases in aquaculture are primarily controlled by antibiotics. Medicinal plants and herbs which are seemed to be candidates of replacements for conventional antibiotics have therefore gained increasing interest. Current study was performed to investigate the presence of phytochemical constituents, antibacterial activities and composition of antibacterial active compounds in methanolic extract of local herb, Piper betle . METHODOLOGY Qualitative phytochemical analysis was firstly carried out to determine the possible active compounds in P. betle leaves methanolic extract. The antibacterial activities of major compounds from this extract against nine fish pathogenic bacteria were then assessed using TLC-bioautography agar overlay assay and their quantity were determined simultaneously by HPLC method. RESULTS The use of methanol has proved to be successful in extracting numerous bioactive compounds including antibacterial compounds. The TLC-bioautography assay revealed the inhibitory action of two compounds which were identified as hydroxychavicol and eugenol. The $-caryophyllene however was totally inactive against all the tested bacterial species. In this study, the concentration of hydroxychavicol in extract was found to be 374.72±2.79 mg g-1, while eugenol was 49.67±0.16 mg g-1. CONCLUSION Based on these findings, it could be concluded that hydroxychavicol and eugenol were the responsible compounds for the promising antibacterial activity of P. betle leaves methanolic extract. This inhibitory action has significantly correlated with the amount of the compounds in extract. Due to its potential, the extract of P. betle leaves or it compounds can be alternative source of potent natural antibacterial agents for aquaculture disease management.
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Affiliation(s)
- A Syahidah
- Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - C R Saad
- Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - M D Hassan
- Department of Clinical Veterinary Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selang or, Malaysia
| | - Y Rukayadi
- Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - M H Norazian
- Kulliyyah of Pharmacy, International Islamic University Malaysia, 25200 Bandar Indera Mahkota, Kuantan, Pahang, Malaysia
| | - M S Kamarudin
- Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysi
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40
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Yang H, Yao W, Wang Y, Shi L, Su R, Wan D, Xu N, Lian W, Chen C, Liu S. High-throughput screening of triplex DNA binders from complicated samples by 96-well pate format in conjunction with peak area-fading UHPLC-Orbitrap MS. Analyst 2017; 142:670-675. [DOI: 10.1039/c6an01974a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Screening triplex DNA binders from complicated samples in a high-throughput fashion with good reproducibility without the requirement of an extra releasing step.
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Affiliation(s)
- Hongmei Yang
- Changchun University of Chinese Medicine
- Changchun 130117
- China
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Wenbin Yao
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Yihan Wang
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Lei Shi
- High Temperature Reactor Holdings Co
- Ltd
- China Nuclear Engineering Group Co
- Beijing 100037
- China
| | - Rui Su
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Debin Wan
- Department of Entomology and Comprehensive Cancer Center
- University of California
- Davis
- USA
| | - Niusheng Xu
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Wenhui Lian
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Changbao Chen
- Changchun University of Chinese Medicine
- Changchun 130117
- China
| | - Shuying Liu
- Changchun University of Chinese Medicine
- Changchun 130117
- China
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
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41
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Kadam HK, Tilve SG. An Alternate Synthesis of6H-Indolo[2,3-b]quinoline via One-Pot Alkylation-Dehydration-Cyclization-Aromatization Approach. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2213] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hari K. Kadam
- Department of Chemistry; Goa University; Taleigao Plateau Goa 403206 India
| | - Santosh G. Tilve
- Department of Chemistry; Goa University; Taleigao Plateau Goa 403206 India
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42
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Chen Y, Zhang Y. Functional and mechanistic analysis of telomerase: An antitumor drug target. Pharmacol Ther 2016; 163:24-47. [DOI: 10.1016/j.pharmthera.2016.03.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/29/2016] [Indexed: 01/26/2023]
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43
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Liu S, Meng J, Zhang W, Wan S, Jiang T. Synthesis of Novel Jusbetonin Analogues and Their Cytotoxicity against Tumor Cell. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shixu Liu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy; Ocean University of China; Qingdao 266003 China
| | - Junxiu Meng
- Nowa Pharmceuticals Co, Ltd.; Suzhou 215121 China
| | - Wei Zhang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy; Ocean University of China; Qingdao 266003 China
| | - Shengbiao Wan
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy; Ocean University of China; Qingdao 266003 China
| | - Tao Jiang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy; Ocean University of China; Qingdao 266003 China
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44
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Shi L, Wang B. Tandem Rh(III)-Catalyzed C–H Amination/Annulation Reactions: Synthesis of Indoloquinoline Derivatives in Water. Org Lett 2016; 18:2820-3. [DOI: 10.1021/acs.orglett.6b01234] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Baiquan Wang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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45
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Rajendran A, Endo M, Hidaka K, Teulade-Fichou MP, Mergny JL, Sugiyama H. Small molecule binding to a G-hairpin and a G-triplex: a new insight into anticancer drug design targeting G-rich regions. Chem Commun (Camb) 2016; 51:9181-4. [PMID: 25951794 DOI: 10.1039/c5cc01678a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
To gain new insights into G-quadruplex-drug interactions, we captured the solution-state structures of the complexes between a drug-like small molecule and a G-hairpin/G-triplex. Our results indicated that the ligand initially binds to the intermediates and induces stepwise folding into a quadruplex.
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Affiliation(s)
- Arivazhagan Rajendran
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
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46
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Funke A, Dickerhoff J, Weisz K. Towards the Development of Structure-Selective G-Quadruplex-Binding Indolo[3,2-b
]quinolines. Chemistry 2016; 22:3170-81. [DOI: 10.1002/chem.201504416] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Indexed: 01/24/2023]
Affiliation(s)
- Andrea Funke
- Institute of Biochemistry; Ernst-Moritz-Arndt University Greifswald; Felix-Hausdorff-Strasse 4 17487 Greifswald Germany
| | - Jonathan Dickerhoff
- Institute of Biochemistry; Ernst-Moritz-Arndt University Greifswald; Felix-Hausdorff-Strasse 4 17487 Greifswald Germany
| | - Klaus Weisz
- Institute of Biochemistry; Ernst-Moritz-Arndt University Greifswald; Felix-Hausdorff-Strasse 4 17487 Greifswald Germany
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47
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Koninti RK, Sappati S, Satpathi S, Gavvala K, Hazra P. Spectroscopy and Dynamics of Cryptolepine in the Nanocavity of Cucurbit[7]uril and DNA. Chemphyschem 2016; 17:506-15. [PMID: 26650669 DOI: 10.1002/cphc.201501011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 12/07/2015] [Indexed: 02/03/2023]
Affiliation(s)
- Raj Kumar Koninti
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Pune 411008 Maharashtra India
| | - Subrahmanyam Sappati
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Pune 411008 Maharashtra India
| | - Sagar Satpathi
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Pune 411008 Maharashtra India
| | - Krishna Gavvala
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Pune 411008 Maharashtra India
| | - Partha Hazra
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Pune 411008 Maharashtra India
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48
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Le Gresley A, Gudivaka V, Carrington S, Sinclair A, Brown JE. Synthesis, analysis and biological evaluation of novel indolquinonecryptolepine analogues as potential anti-tumour agents. Org Biomol Chem 2016; 14:3069-79. [DOI: 10.1039/c5ob02408k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A small library of cryptolepine analogues were synthesised incorporating halogens and/or nitrogen containing side chains to optimise their interaction with the sugar–phosphate backbone of DNA to give improved binding, interfering with topoisomerase II hence enhancing cytotoxicity.
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Affiliation(s)
- A. Le Gresley
- School of Life
- Chemical and Pharmaceutical Sciences
- SEC Faculty
- Kingston University
- UK
| | - V. Gudivaka
- School of Life
- Chemical and Pharmaceutical Sciences
- SEC Faculty
- Kingston University
- UK
| | - S. Carrington
- School of Life
- Chemical and Pharmaceutical Sciences
- SEC Faculty
- Kingston University
- UK
| | - A. Sinclair
- School of Life
- Chemical and Pharmaceutical Sciences
- SEC Faculty
- Kingston University
- UK
| | - J. E. Brown
- School of Life
- Chemical and Pharmaceutical Sciences
- SEC Faculty
- Kingston University
- UK
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49
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Yang X, Wang H, Zhou X, Li X. Iridium- and rhodium-catalyzed C–H activation and formyl arylation of benzaldehydes under chelation-assistance. Org Biomol Chem 2016; 14:5233-7. [DOI: 10.1039/c6ob00825a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mild and efficient synthesis of benzophenones via Ir(iii)- and Rh(iii)-catalyzed, directing group-assisted formyl C–H arylation of benzaldehydes has been achieved using diaryliodonium salts, in which Rh(iii) and Ir(iii) catalysts exhibited a complementary substrate scope.
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Affiliation(s)
- Xifa Yang
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
| | - He Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
| | - Xukai Zhou
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
| | - Xingwei Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
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50
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Aher MN, Erande ND, Fernandes M, Kumar VA. Unimolecular antiparallel G-quadruplex folding topology of 2′–5′-isoTBA sequences remains unaltered by loop composition. Org Biomol Chem 2015; 13:11696-703. [DOI: 10.1039/c5ob01923k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Unlike 3′–5′-linked TBA, the 2′–5′-linked isoTBA formed only unimolecular antiparallel G-quadruplexes independent of loop length.
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Affiliation(s)
- Manisha N. Aher
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Namrata D. Erande
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Moneesha Fernandes
- Organic Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
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