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Fernandes RA, Pathare RS, Gorve DA. Advances in Total Synthesis of Some 2,3,5-Trisubstituted Tetrahydrofuran Natural Products. Chem Asian J 2020; 15:2815-2837. [PMID: 32702201 DOI: 10.1002/asia.202000753] [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: 06/29/2020] [Revised: 07/21/2020] [Indexed: 11/06/2022]
Abstract
2,3,5-Trisubstituted tetrahydrofuran moiety is ubiquitous in natural products. These have served as appealing candidates for total synthesis due to their varied bio- and pharmaceutical activities. This tutorial review delineates the ingenious efforts by many researchers in the total synthesis of selected natural products based on a common 2,3,5-trisubstituted tetrahydrofuran core structure. Many of the syntheses display nuanced interplay between new methods and the ingenuity of planned strategies achieved through catalysis or cascade chemistry. In some cases, the chiron approach has come quite handy, wherein the structural features and the stereochemistry in select molecules could map well with naturally available starting materials. This compilation also aims to enhance the diversity space based on these natural products and further interest in sustainable total synthesis.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Ramdas S Pathare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
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102
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Targeting type II diabetes with plant terpenes: the new and promising antidiabetic therapeutics. Biologia (Bratisl) 2020. [DOI: 10.2478/s11756-020-00575-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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103
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Encapsulation of cucurbitacin B into lipid polymer hybrid nanocarriers induced apoptosis of MDAMB231 cells through PARP cleavage. Int J Pharm 2020; 586:119565. [DOI: 10.1016/j.ijpharm.2020.119565] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 12/24/2022]
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104
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Arbour CA, Imperiali B. Uridine natural products: Challenging targets and inspiration for novel small molecule inhibitors. Bioorg Med Chem 2020; 28:115661. [PMID: 32828427 DOI: 10.1016/j.bmc.2020.115661] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/18/2020] [Indexed: 12/16/2022]
Abstract
Nucleoside derivatives, in particular those featuring uridine, are familiar components of the nucleoside family of bioactive natural products. The structural complexity and biological activities of these compounds have inspired research from organic chemistry and chemical biology communities seeking to develop novel approaches to assemble the challenging molecular targets, to gain inspiration for enzyme inhibitor development and to fuel antibiotic discovery efforts. This review will present recent case studies describing the total synthesis and biosynthesis of uridine natural products, and de novo synthetic efforts exploiting features of the natural products to produce simplified scaffolds. This research has culminated in the development of complementary strategies that can lead to effective uridine-based inhibitors and antibiotics. The strengths and challenges of the juxtaposing methods will be illustrated by examining select uridine natural products. Moreover, structure-activity relationships (SAR) for each natural product-inspired scaffold will be discussed, highlighting the impact on inhibitor development, with the aim of future uridine-based small molecule expansion.
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Affiliation(s)
- Christine A Arbour
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Barbara Imperiali
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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105
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Wang J, Blaze J, Haghighi F, Kim-Schulze S, Raval U, Trageser KJ, Pasinetti GM. Characterization of 3(3,4-dihydroxy-phenyl) propionic acid as a novel microbiome-derived epigenetic modifier in attenuation of immune inflammatory response in human monocytes. Mol Immunol 2020; 125:172-177. [PMID: 32707536 DOI: 10.1016/j.molimm.2020.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/17/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022]
Abstract
Recent studies suggest that microbiome derived 3(3,4-dihydroxy-phenyl) propionic acid (DHCA) attenuates IL-6 cytokine production through downregulation of the epigenetic modifier DNA Methyltransferase 1 (DNMT1) expression and inhibition of DNA methylation at the 5'-C-phosphate-G-3' (CpG)-rich IL6 sequence introns 1 and 3 in a mouse model of depression. In this study, we extended the investigation of DHCA epigenetic mechanisms in IL-6 expression in human peripheral blood mononuclear cells (PBMC). Using Lucia Luciferase reporter gene system we identified CpG-rich sequences in which of methylation is influenced by DHCA similar to what observed in response to treatment with the DNA methylation inhibitor 5-aza-2'-deoxycytidine. Correlation study showed that DNA methylation at select CpG motifs in the IL-6 promoter correlates with IL-6 gene expression. Our study suggests that DHCA is effective in reducing IL-6 expression in human PBMCs, in part, by regulation of methylation in the IL-6 promoter region.
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Affiliation(s)
- Jun Wang
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, United States; Research and Development Service, Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, United States
| | - Jennifer Blaze
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Fatemeh Haghighi
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, United States; Research and Development Service, Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, United States
| | - Seunghee Kim-Schulze
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Urdvha Raval
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Kyle J Trageser
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Giulio Maria Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, United States; Research and Development Service, Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, United States.
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106
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Vinogradov AA, Suga H. Introduction to Thiopeptides: Biological Activity, Biosynthesis, and Strategies for Functional Reprogramming. Cell Chem Biol 2020; 27:1032-1051. [PMID: 32698017 DOI: 10.1016/j.chembiol.2020.07.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/21/2020] [Accepted: 07/01/2020] [Indexed: 12/16/2022]
Abstract
Thiopeptides (also known as thiazolyl peptides) are structurally complex natural products with rich biological activities. Known for over 70 years for potent killing of Gram-positive bacteria, thiopeptides are experiencing a resurgence of interest in the last decade, primarily brought about by the genomic revolution of the 21st century. Every area of thiopeptide research-from elucidating their biological function and biosynthesis to expanding their structural diversity through genome mining-has made great strides in recent years. These advances lay the foundation for and inspire novel strategies for thiopeptide engineering. Accordingly, a number of diverse approaches are being actively pursued in the hope of developing the next generation of natural-product-inspired therapeutics. Here, we review the contemporary understanding of thiopeptide biological activities, biosynthetic pathways, and approaches to structural and functional reprogramming, with a special focus on the latter.
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Affiliation(s)
- Alexander A Vinogradov
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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107
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Winnie FYM, Siddiqui R, Sagathevan K, Khan NA. Identification of Antibacterial Molecule(s) from Animals Living in Polluted Environments. Curr Pharm Biotechnol 2020; 21:425-437. [PMID: 31577204 DOI: 10.2174/1389201020666191002153435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 01/25/2023]
Abstract
BACKGROUND Snakes feed on germ-infested rodents, while water monitor lizards thrive on rotten matter in unhygienic conditions. We hypothesize that such creatures survive the assault of superbugs and are able to fend off disease by producing antimicrobial substances. In this study, we investigated the potential antibacterial activity of sera/lysates of animals living in polluted environments. METHODS Snake (Reticulatus malayanus), rats (Rattus rattus), water monitor lizard (Varanus salvator), frog (Lithobates catesbeianus), fish (Oreochromis mossambicus), chicken (Gallus gallus domesticus), and pigeon (Columba livia) were dissected and their organ lysates/sera were collected. Crude extracts were tested for bactericidal effects against neuropathogenic E. coli K1, methicillin-resistant Staphylococcus aureus (MRSA), Streptococcus pyogenes, Pseudomonas aeruginosa, Bacillus cereus and Klebsiella pneumoniae. To determine whether lysates/sera protect human cells against bacterialmediated damage, cytotoxicity assays were performed by measuring lactate dehydrogenase release as an indicator of cell death. Lysates/sera were partially characterized using heat-treatment and pronasetreatment and peptide sequences were determined using the Liquid Chromatography Mass Spectrometry (LC-MS). RESULTS Snake and water monitor lizard sera exhibited potent broad-spectrum bactericidal effects against all bacteria tested. Heat inactivation and pronase-treatment inhibited bactericidal effects indicating that activity is heat-labile and pronase-sensitive suggesting that active molecules are proteinaceous in nature. LCMS analyses revealed the molecular identities of peptides. CONCLUSION The results revealed that python that feeds on germ-infested rodents and water monitor lizards that feed on rotten organic waste possess antibacterial activity in a heat-sensitive manner and several peptides were identified. We hope that the discovery of antibacterial activity in the sera of animals living in polluted environments will stimulate research in finding antibacterial agents from unusual sources as this has the potential for the development of novel strategies in the control of infectious diseases.
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Affiliation(s)
- Foo Y M Winnie
- Department of Biological Sciences, School of Science and Technology, Sunway University, Bandar Sunway, Selangor, Malaysia
| | - Ruqaiyyah Siddiqui
- Department of Biology, Chemistry and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Kuppusamy Sagathevan
- Department of Biological Sciences, School of Science and Technology, Sunway University, Bandar Sunway, Selangor, Malaysia
| | - Naveed A Khan
- Department of Biology, Chemistry and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
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108
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Wang J, Zhao D, Tiano S, Esteban-Fernández A, Yuan B, Smith C, Brathwaite J, Jlayer Z, Wu Q, Simon JE, Trageser KJ, Pasinetti GM. Prophylactic effect of flavanol rich preparation metabolites in promoting resilience to a mouse model of social stress. Transl Psychiatry 2020; 10:183. [PMID: 32518327 PMCID: PMC7283298 DOI: 10.1038/s41398-020-0859-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/04/2020] [Accepted: 05/15/2020] [Indexed: 01/16/2023] Open
Abstract
Major depressive disorder (MDD) is a leading cause of disability, and there is an urgent need for new therapeutics. Stress-mediated induction of pro-inflammation in the periphery contributes to depression-like behaviors both in humans and in experimental models. Inflammatory cytokine interleukin-6 (IL-6) has emerged as a potential therapeutic target. Our studies demonstrated that metabolism of flavanol rich cocoa preparation (FRP) led to the accumulation of select phenolic acids that may contribute to its anti-inflammatory activity. Using a repeated social defeat stress (RSDS) model of depression, we showed that oral administration of FRP attenuates susceptibility to RSDS-mediated depression, supporting the further development of FRP as a novel therapeutic for the treatment of stress disorders and anxiety in humans.
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Affiliation(s)
- Jun Wang
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA ,grid.274295.f0000 0004 0420 1184Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, New York, NY 10468 USA
| | - Danyue Zhao
- grid.430387.b0000 0004 1936 8796New Use Agriculture & Natural Plant Products Program, Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901 USA
| | - Simoni Tiano
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Adelaida Esteban-Fernández
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Bo Yuan
- grid.430387.b0000 0004 1936 8796New Use Agriculture & Natural Plant Products Program, Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901 USA
| | - Chad Smith
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Justin Brathwaite
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Zahra Jlayer
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Qingli Wu
- grid.430387.b0000 0004 1936 8796New Use Agriculture & Natural Plant Products Program, Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901 USA
| | - James E. Simon
- grid.274295.f0000 0004 0420 1184Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, New York, NY 10468 USA
| | - Kyle J. Trageser
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Giulio M. Pasinetti
- grid.59734.3c0000 0001 0670 2351Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA ,grid.274295.f0000 0004 0420 1184Geriatric Research, Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, New York, NY 10468 USA
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109
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Kara EM, Bayrak N, Yıldırım H, Yıldız M, Celik BO, Tuyun AF. Chlorinated plastoquinone analogs that inhibit Staphylococcus epidermidis and Candida albicans growth. Folia Microbiol (Praha) 2020; 65:785-795. [PMID: 32458315 DOI: 10.1007/s12223-020-00783-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/28/2020] [Indexed: 02/06/2023]
Abstract
Infectious diseases are the significant global health problem because of drug resistance to most classes of antimicrobials. Interest is growing in the development of new antimicrobials in pharmaceutical discovery. For that reason, the urgency for scientists to find and/or develop new important molecules is needed. Many natural active molecules that exhibit various biological activities have been isolated from the nature. For the present research, a new selected set of aminobenzoquinones, denoted as plastoquinone analogs (PQ1-24), was employed for their in vitro antimicrobial potential in a panel of seven bacterial strains (three Gram-positive and four Gram-negative bacteria) and three fungi. The results revealed PQ analogs with specific activity against bacteria including Staphylococcus epidermidis and pathogenic fungi, including Candida albicans. PQ8 containing methoxy group at the ortho position on the phenylamino moiety exhibited the highest growth inhibition against S. epidermidis with a minimum inhibitory concentration of 9.76 μg/mL. The antifungal profile of all PQ analogs indicated that five analogs (while PQ1, PQ8, PQ9, PQ11, and PQ18 were effective against Candida albicans, PQ1 and PQ18 were effective against Candida tropicalis) have potent antifungal activity. Selected analogs, PQ1 and PQ18, were studied for biofilm evaluation and time-kill kinetic study for better understanding.
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Affiliation(s)
- Emel Mataracı Kara
- Pharmaceutical Microbiology Department, Pharmacy Faculty, Istanbul University, Beyazit, 34116, Istanbul, Turkey.
| | - Nilüfer Bayrak
- Chemistry Department, Engineering Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320, Istanbul, Turkey
| | - Hatice Yıldırım
- Chemistry Department, Engineering Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320, Istanbul, Turkey
| | - Mahmut Yıldız
- Chemistry Department, Gebze Technical University, Gebze, 41400, Kocaeli, Turkey
| | - Berna Ozbek Celik
- Pharmaceutical Microbiology Department, Pharmacy Faculty, Istanbul University, Beyazit, 34116, Istanbul, Turkey
| | - Amaç Fatih Tuyun
- Department of Chemistry, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Turkey.
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110
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Ahmed MH, Aldesouki HM, Badria FA. Effect of phenolic compounds from the leaves of Psidium guajava on the activity of three metabolism-related enzymes. Biotechnol Appl Biochem 2020; 68:497-512. [PMID: 32432341 DOI: 10.1002/bab.1956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 05/16/2020] [Indexed: 01/10/2023]
Abstract
Enzyme activity modulation by synthetic compounds provide strategies combining the inhibitory and therapeutic mode of action of the confirmed inhibitors. However, natural modulators could offer a valuable alternative for synthetic ones for the treatment of different chronic diseases (diabetes, hypertension, cancer); due to the numerous side effects of the latter. In vitro screening assays were conducted for Psidium guajava leaf methanolic extract against three metabolism-related enzymes; α-amylase, tyrosinase, and hyaluronidase. The obtained results showed that the examined extract retained weak and moderate multitarget inhibition against α-amylase, tyrosinase, and hyaluronidase, respectively; however, the leaf fractions exhibited stronger inhibitions for the three investigated enzymes. Fractionation of P. guajava leaf extract revealed that anthraquinones and ellagic acid are of the major active compounds with inhibitory activities for α-amylase, tyrosinase, and hyaluronidase. Kinetic studies showed that quinalizarin inhibition is competitive for both α-amylase and hyaluronidase, and ellagic acid inhibition for tyrosinase and hyaluronidase is competitive and un-competitive, respectively. The molecular docking studies of quinalizarin and ellagic acid with α-amylase, tyrosinase, and hyaluronidase showed high binding energies with different bonds stabilizing the ligand-protein complex. Compiling all obtained results led to conclude that both P. guajava leaf fractions, quinalizarin and ellagic acid, have multitarget activities with potential therapeutic applications in many metabolic disorders.
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Affiliation(s)
- Mohamed H Ahmed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hala M Aldesouki
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Farid A Badria
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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111
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Simoben CV, Ntie-Kang F, Robaa D, Sippl W. Case studies on computer-based identification of natural products as lead molecules. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AbstractThe development and application of computer-aided drug design/discovery (CADD) techniques (such as structured-base virtual screening, ligand-based virtual screening and neural networks approaches) are on the point of disintermediation in the pharmaceutical drug discovery processes. The application of these CADD methods are standing out positively as compared to other experimental approaches in the identification of hits. In order to venture into new chemical spaces, research groups are exploring natural products (NPs) for the search and identification of new hits and more efficient leads as well as the repurposing of approved NPs. The chemical space of NPs is continuously increasing as a result of millions of years of evolution of species and these data are mainly stored in the form of databases providing access to scientists around the world to conduct studies using them. Investigation of these NP databases with the help of CADD methodologies in combination with experimental validation techniques is essential to identify and propose new drug molecules. In this chapter, we highlight the importance of the chemical diversity of NPs as a source for potential drugs as well as some of the success stories of NP-derived candidates against important therapeutic targets. The focus is on studies that applied a healthy dose of the emerging CADD methodologies (structure-based, ligand-based and machine learning).
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Affiliation(s)
- Conrad V. Simoben
- Department of Medicinal Chemistry (AG Sippl), Institute of Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120Halle (Saale), Germany
| | - Fidele Ntie-Kang
- Department of Chemistry, University of Buea, P. O. Box 63, Buea, Cameroon
- Department of Medicinal Chemistry (AG Sippl), Institute of Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120Halle (Saale), Germany
| | - Dina Robaa
- Department of Medicinal Chemistry (AG Sippl), Institute of Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120Halle (Saale), Germany
| | - Wolfgang Sippl
- Department of Medicinal Chemistry (AG Sippl), Institute of Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120Halle (Saale), Germany
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112
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Serafini M, Cargnin S, Massarotti A, Pirali T, Genazzani AA. Essential Medicinal Chemistry of Essential Medicines. J Med Chem 2020; 63:10170-10187. [PMID: 32352778 PMCID: PMC8007110 DOI: 10.1021/acs.jmedchem.0c00415] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Since 1977, the World Health Organization publishes a list of essential medicines, i.e., those that satisfy the priority health care needs of the population and are selected with regard to disease prevalence and public health relevance, evidence of clinical efficacy, and safety, as well as comparative costs and cost-effectiveness. The Essential Medicines List (EML) is an invaluable tool for all countries to select those medicines that have an excellent risk/benefit ratio and that are reputed to be of pivotal importance to health. In the present perspective, we describe the chemical composition and the main features of the small molecules that are included in the EML, spanning from their origin, to their stereochemistry and measure of drug-likeness. Most and foremost, we wish to disseminate the importance of the EML, which can be both a helpful teaching tool in an ever-expanding world of medicines and an inspiration for those involved in pharmaceutical R&D.
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Affiliation(s)
- Marta Serafini
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Sarah Cargnin
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Alberto Massarotti
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Tracey Pirali
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Armando A Genazzani
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
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113
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Ravi SK, Narasingappa RB, Mundagaru R, Girish TK, Vincent B. Cassia tora extract alleviates Aβ 1-42 aggregation processes in vitro and protects against aluminium-induced neurodegeneration in rats. ACTA ACUST UNITED AC 2020; 72:1119-1132. [PMID: 32363579 DOI: 10.1111/jphp.13283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/04/2020] [Indexed: 01/04/2023]
Abstract
OBJECTIVES To examine the ability of Cassia tora extract to produce, in vitro and in vivo, beneficial effects with respect to events occurring during Alzheimer's disease. METHODS Previously characterised methanol extract of C. tora was tested for its ability to lessen Aβ42 aggregation processes in vitro and to alleviate aluminium-induced impairments in vivo in rats. KEY FINDINGS Cassia tora extract prevents the aggregation of monomeric, oligomeric and fibrillary Aβ1-42 in vitro. Moreover, the daily ingestion of 100 and 400 milligrams of the extract per kilogram of body weight for 60 days ameliorates the neurobehavioral and cognitive abilities of aluminium-treated rats in vivo. Importantly, treatments with the extract trigger a significant recovery of antioxidant enzymes function, a diminution of lipid peroxidation and acetylcholinesterase activity, a decrease of pro-inflammatory cytokines expression and an increase of brain-derived neurotrophic factor levels in both the hippocampus and the frontal cortex. Finally, we evidence that the extract is able to ameliorate the aluminium-dependent loss of neuronal integrity in the CA1 and CA3 regions of the hippocampus. CONCLUSIONS Altogether, our results reveal that methanol extract of C. tora is able to prevent typical AD-related events and therefore stands as a promising mild and natural anti-AD multitarget compound.
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Affiliation(s)
- Sunil K Ravi
- Department of Biotechnology, College of Agriculture, University of Agriculture Sciences, Bangalore, Hassan, India
| | - Ramesh B Narasingappa
- Department of Biotechnology, College of Agriculture, University of Agriculture Sciences, Bangalore, Hassan, India
| | - Ravi Mundagaru
- Pharmacology laboratory, SDM Centre for Research in Ayurveda and Allied Sciences, Kuthpady, Udupi, India
| | - Talakatta K Girish
- Department of Biochemistry and Nutrition, Central Food Technological Research Institute, Mysore, India
| | - Bruno Vincent
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand.,Centre National de la Recherche Scientifique, Paris, France
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114
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Berdigaliyev N, Aljofan M. An overview of drug discovery and development. Future Med Chem 2020; 12:939-947. [PMID: 32270704 DOI: 10.4155/fmc-2019-0307] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 02/18/2020] [Indexed: 01/01/2023] Open
Abstract
A new medicine will take an average of 10-15 years and more than US$2 billion before it can reach the pharmacy shelf. Traditionally, drug discovery relied on natural products as the main source of new drug entities, but was later shifted toward high-throughput synthesis and combinatorial chemistry-based development. New technologies such as ultra-high-throughput drug screening and artificial intelligence are being heavily employed to reduce the cost and the time of early drug discovery, but they remain relatively unchanged. However, are there other potentially faster and cheaper means of drug discovery? Is drug repurposing a viable alternative? In this review, we discuss the different means of drug discovery including their advantages and disadvantages.
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Affiliation(s)
- Nurken Berdigaliyev
- Department of biomedical Science, Nazarbayev University School of Medicine, Nur-Sultan 010000, Kazakhstan
| | - Mohamad Aljofan
- Department of biomedical Science, Nazarbayev University School of Medicine, Nur-Sultan 010000, Kazakhstan
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115
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Piperine ameliorated memory impairment and myelin damage in lysolecethin induced hippocampal demyelination. Life Sci 2020; 253:117671. [PMID: 32335165 DOI: 10.1016/j.lfs.2020.117671] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/02/2020] [Accepted: 04/11/2020] [Indexed: 12/14/2022]
Abstract
AIMS We still do not have effective treatment for hippocampal demyelination and memory deficit, the two common comorbidities in multiple sclerosis (MS). This study aimed to assess the therapeutic effect of Piperine (the main alkaloid of black pepper) in an experimental model of demyelination. MAIN METHODS Demyelination was induced in male Wistar rats by bilateral injection of lysolecithin (LPC) into the CA1 region of the hippocampus. Piperine (5, 10, 20 mg/kg) was daily injected intraperitoneally three days post LPC injection for ten days. The spatial memory was examined by the Morris water maze task. Demyelination and astrocyte activation were assessed by an immunohistological study. The gene expression analysis of TNF-α, IL1-β, NF-κB, IL-10, Foxp3, iNOS, Nrf2, HO1, MBP, and BDNF was done using qPCR. The total antioxidant capacity of hippocampal tissue was measured using FRAP assay. KEY FINDINGS Our results showed that piperine improved the memory performance and myelin repair in the hippocampal demyelination model. Piperine inhibited iNOS expression concomitant with enhanced expression levels of Nrf2, HO1 and the total antioxidant capacity in the hippocampal tissue. Piperine treatment significantly reduced the gene expression level of TNF-α, IL1-β, NF-κB, and glial activation in the injured area; however, the mRNA level of IL-10, Foxp3, BDNF and MBP were significantly increased. SIGNIFICANCE We found piperine to be an effective treatment for spatial memory impairment and myelin repair in the hippocampal demyelination model. However, further experimental evidence is needed to investigate the precise mechanisms underlying piperine as a promising therapeutic target in MS patients.
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Li YW, Chi Q, Feng T, Xiao H, Li L, Wang X. Interactions of indole alkaloids with myoglobin: A mass spectrometry based spectrometric and computational method. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8656. [PMID: 31721336 DOI: 10.1002/rcm.8656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Interactions of drug molecules and proteins play important roles in physiological and pathological processes in vivo. It is of significance to establish a reliable strategy for studying protein-drug ligand interactions and would be helpful for the design and screening of new drugs in pharmacological research. METHODS The interactions between four indole alkaloids (IAs) extracted from Ophiorrhiza japonica (O. japonica) and myoglobin (Mb) protein were investigated using a multi-spectrometric and computational method of native electrospray ionization mass spectrometry (native ESI-MS), hydrogen/deuterium exchange mass spectrometry (HDX-MS), circular dichroism (CD) and molecular docking (MD). RESULTS The IA-bound Mb complexes were analyzed using native ESI-MS, with the obtained protein-to-ligand stoichiometry at 1:1, 1:2 and 1:3. Binding constants were measured according to the interpretation of MS spectra. MD complemented MS measurements, probing the binding sites and modes of the four IAs to Mb. Analyses involving CD and HDX-MS demonstrated that exposure to IAs could affect the conformation of Mb by decreasing the α-helix content and made Mb more susceptible to HDX at the backbone. CONCLUSIONS A new MS-based integrated analysis method has been developed to successfully study the interactions of Mb and IAs extracted from O. japonica. The experimental and calculation results have good consistency, revealing all of the four IA molecules could bind to Mb to form 1:1, 1:2 and 1:3 Mb-IA complexes. The order of binding ability of these IAs to Mb was ophiorrhine B > compound C > ophiorrhine A > compound D. CD and HDX-MS results indicated that binding with IAs destabilizes Mb. HDX-MS analysis suggests that Mb becomes more susceptible to HDX, indicating that binding with IAs destabilizes the structure of Mb. In addition, the interaction with IAs affected the overall structure of Mb, ascribed to the decrease of α-helix content and less folding of the backbone.
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Affiliation(s)
- Ya-Wen Li
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Quan Chi
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Tao Feng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074, Wuhan, China
| | - Huaming Xiao
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Linghe Li
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Xian Wang
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
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Hasija A, Bhandary S, Venugopala KN, Chandrashekharappa S, Chopra D. Structural investigation of methyl 3-(4-fluoro-benzo-yl)-7-methyl-2-phenyl-indolizine-1-carboxyl-ate, an inhibitory drug towards Mycobacterium tuberculosis. Acta Crystallogr E Crystallogr Commun 2020; 76:567-571. [PMID: 32280505 PMCID: PMC7133047 DOI: 10.1107/s2056989020003837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/16/2020] [Indexed: 11/30/2022]
Abstract
The title compound, C24H18FNO3, crystallizes in the monoclinic centrosymmetric space group P21/n and its mol-ecular conformation is stabilized via C-H⋯O intra-molecular inter-actions. The supra-molecular network mainly comprises C-H⋯O, C-H⋯F and C-H⋯π inter-actions, which contribute towards the formation of the crystal structure. The different inter-molecular inter-actions have been further analysed via Hirshfeld surface analysis and fingerprint plots.
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Affiliation(s)
- Avantika Hasija
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462066, India
| | - Subhrajyoti Bhandary
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462066, India
| | - Katharigatta N. Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Kingdom of Saudi Arabia
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban 4001, South Africa
| | - Sandeep Chandrashekharappa
- Institute for Stem Cell Biology and Regenerative Medicine, NCBS, TIFR, GKVK, Bellary Road, Bangalore 560 065, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462066, India
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Wang L, Li L, Han Q, Wang X, Zhao D, Liu J. Identification and biological evaluation of natural product Biochanin A. Bioorg Chem 2020; 97:103674. [DOI: 10.1016/j.bioorg.2020.103674] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/28/2020] [Accepted: 02/15/2020] [Indexed: 12/27/2022]
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119
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Edouarzin E, Horn C, Paudyal A, Zhang C, Lu J, Tong Z, Giaever G, Nislow C, Veerapandian R, Hua DH, Vediyappan G. Broad-spectrum antifungal activities and mechanism of drimane sesquiterpenoids. MICROBIAL CELL 2020; 7:146-159. [PMID: 32548177 PMCID: PMC7278516 DOI: 10.15698/mic2020.06.719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Eight drimane sesquiterpenoids including (-)-drimenol and (+)-albicanol were synthesized from (+)-sclareolide and evaluated for their antifungal activities. Three compounds, (-)-drimenol, (+)-albicanol, and (1R,2R,4aS,8aS)-2-hydroxy-2,5,5,8a-tetramethyl-decahydronaphthalene-1-carbaldehyde (4) showed strong activity against C. albicans. (-)-Drimenol, the strongest inhibitor of the three, (at concentrations of 8 – 64 µg/ml, causing 100% death of various fungi), acts not only against C. albicans in a fungicidal manner, but also inhibits other fungi such as Aspergillus, Cryptococcus, Pneumocystis, Blastomyces, Saksenaea and fluconazole resistant strains of C. albicans, C. glabrata, C. krusei, C. parapsilosis and C. auris. These observations suggest that drimenol is a broad-spectrum antifungal agent. At a high concentration (100 μg/ml) drimenol caused rupture of the fungal cell wall/membrane. In a nematode model of C. albicans infection, drimenol rescued the worms from C. albicans-mediated death, indicating drimenol is tolerable and bioactive in metazoans. Genome-wide fitness profiling assays of both S. cerevisiae (nonessential homozygous and essential heterozygous) and C. albicans (Tn-insertion mutants) collections revealed putative genes and pathways affected by drimenol. Using a C. albicans mutant spot assay, the Crk1 kinase associated gene products, Ret2, Cdc37, and orf19.759, orf19.1672, and orf19.4382 were revealed to be involved in drimenol's mechanism of action. The three orfs identified in this study are novel and appear to be linked with Crk1 function. Further, computational modeling results suggest possible modifications of the structure of drimenol, including the A ring, for improving the antifungal activity.
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Affiliation(s)
- Edruce Edouarzin
- Department of Chemistry, 1212 Mid Campus Drive North, Kansas State University, Manhattan, KS 66506 USA
| | - Connor Horn
- Division of Biology, 1717 Claflin Road, Kansas State University, Manhattan, KS 66506 USA
| | - Anuja Paudyal
- Division of Biology, 1717 Claflin Road, Kansas State University, Manhattan, KS 66506 USA
| | - Cunli Zhang
- Department of Chemistry, 1212 Mid Campus Drive North, Kansas State University, Manhattan, KS 66506 USA
| | - Jianyu Lu
- Department of Chemistry, 1212 Mid Campus Drive North, Kansas State University, Manhattan, KS 66506 USA
| | - Zongbo Tong
- Department of Chemistry, 1212 Mid Campus Drive North, Kansas State University, Manhattan, KS 66506 USA
| | - Guri Giaever
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC Canada V6T 1Z3
| | - Corey Nislow
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC Canada V6T 1Z3
| | - Raja Veerapandian
- Division of Biology, 1717 Claflin Road, Kansas State University, Manhattan, KS 66506 USA
| | - Duy H Hua
- Department of Chemistry, 1212 Mid Campus Drive North, Kansas State University, Manhattan, KS 66506 USA
| | - Govindsamy Vediyappan
- Division of Biology, 1717 Claflin Road, Kansas State University, Manhattan, KS 66506 USA
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The Cuban Propolis Component Nemorosone Inhibits Proliferation and Metastatic Properties of Human Colorectal Cancer Cells. Int J Mol Sci 2020; 21:ijms21051827. [PMID: 32155848 PMCID: PMC7084755 DOI: 10.3390/ijms21051827] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
The majority of deaths related to colorectal cancer (CRC) are associated with the metastatic process. Alternative therapeutic strategies, such as traditional folk remedies, deserve attention for their potential ability to attenuate the invasiveness of CRC cells. The aim of this study is to investigate the biological activity of brown Cuban propolis (CP) and its main component nemorosone (NEM) and to describe the molecular mechanism(s) by which they inhibit proliferation and metastatic potential of 2 CRC cell lines, i.e., HT-29 and LoVo. Our results show that CP and NEM significantly decreased cell viability and inhibited clonogenic capacity of CRC cells in a dose and time-dependent manner, by arresting the cell cycle in the G0/G1 phase and inducing apoptosis. Furthermore, CP and NEM downregulated BCL2 gene expression and upregulated the expression of the proapoptotic genes TP53 and BAX, with a consequent activation of caspase 3/7. They also attenuated cell migration and invasion by inhibiting MMP9 activity, increasing E-cadherin and decreasing β-catenin and vimentin expression, proteins involved in the epithelial–mesenchymal transition (EMT). In conclusion NEM, besides displaying antiproliferative activity on CRC cells, is able to decrease their metastatic potential by modulating EMT-related molecules. These finding provide new insight about the mechanism(s) of the antitumoral properties of CP, due to NEM content.
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Sousa H, Hinzmann M. Review: Antibacterial components of the Bivalve's immune system and the potential of freshwater bivalves as a source of new antibacterial compounds. FISH & SHELLFISH IMMUNOLOGY 2020; 98:971-980. [PMID: 31676427 DOI: 10.1016/j.fsi.2019.10.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/09/2019] [Accepted: 10/28/2019] [Indexed: 06/10/2023]
Abstract
Antibacterial research is reaching new heights due to the increasing demand for the discovery of new substances capable of inhibiting bacteria, especially to respond to the appearance of more and more multi-resistant strains. Bivalves show enormous potential for the finding of new antibacterial compounds, although for that to be further explored, more research needs to be made regarding the immune system of these organisms. Beyond their primary cellular component responsible for bacterial recognition and destruction, the haemocytes, bivalves have various other antibacterial units dissolved in the haemolymph that intervene in the defense against bacterial infections, from the recognition factors that detect different bacteria to the effector molecules carrying destructive properties. Moreover, to better comprehend the immune system, it is important to understand the different survival strategies that bacteria possess in order to stay alive from the host's defenses. This work reviews the current literature regarding the components that intervene in a bacterial infection, as well as discussing the enormous potential that freshwater bivalves have in the discovery of new antibacterial compounds.
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Affiliation(s)
- Henrique Sousa
- ICBAS - Abel Salazar Institute of Biomedical Sciences, R. Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal.
| | - Mariana Hinzmann
- ICBAS - Abel Salazar Institute of Biomedical Sciences, R. Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal; CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos, 4450-208, Matosinhos, Portugal.
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122
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(+)-Limonene 1,2-Epoxide-Loaded SLNs: Evaluation of Drug Release, Antioxidant Activity, and Cytotoxicity in an HaCaT Cell Line. Int J Mol Sci 2020; 21:ijms21041449. [PMID: 32093358 PMCID: PMC7073088 DOI: 10.3390/ijms21041449] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 02/06/2023] Open
Abstract
In this work, we developed a solid lipid nanoparticle (SLN) formulation with (+)-limonene 1,2-epoxide and glycerol monostearate (Lim-SLNs), stabilized with Poloxamer® 188 in aqueous dispersion to modify the release profile of the loaded monoterpene derivative. We also evaluated the role of SLNs in lipid peroxidation and cytotoxicity in a spontaneously transformed aneuploid immortal keratinocyte cell line from adult human skin (the HaCaT cell line). For the cell viability assay, the colorimetric 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay was used. Lim-SLNs with a loading capacity and encapsulation efficiency of 0.39% and 63%, respectively, were produced by high pressure homogenization. A mean particle size of 194 ± 3.4 nm and polydispersity index of 0.244 were recorded for the loaded Lim-SLNs, as compared to 203 ± 1.5 nm (PI 0.213) for the non-loaded (blank) SLNs. The loading of the monoterpene derivative into glycerol monostearate SLNs fitted into the zero-order kinetics, and ameliorated both lipid peroxidation and cytotoxicity in a keratinocyte cell line. A promising formulation for antioxidant and anti-tumoral activities is here proposed.
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123
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Bhat BA, Rashid S, Sengupta S, Mehta G. Recent Advances in Total Synthesis of Bioactive Furo[3,2‐
b
]furanone Natural Products. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bilal A. Bhat
- CSIR-Medicinal Chemistry DivisionIndian Institute of Integrative Medicine Sanatnagar-Srinagar 190005 India
- Academy of Scientific and Innovative Research India
| | - Showkat Rashid
- CSIR-Medicinal Chemistry DivisionIndian Institute of Integrative Medicine Sanatnagar-Srinagar 190005 India
- Academy of Scientific and Innovative Research India
| | | | - Goverdhan Mehta
- School of ChemistryUniversity of Hyderabad Hyderabad 500046 India
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Ahmed MH, Aldesouki HM, Badria FA. Effect of phenolic compounds from the rind of Punica granatum on the activity of three metabolism-related enzymes. Biotechnol Appl Biochem 2020; 67:960-972. [PMID: 31769157 DOI: 10.1002/bab.1866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022]
Abstract
Enzyme activity modulation by synthetic compounds provide strategies combining the inhibitory and therapeutic mode of action of the confirmed inhibitors. However, natural modulators could offer a valuable alternative for synthetic ones for the treatment of different chronic diseases (diabetes, hypertension, cancer) due to the numerous side effects of the latter. In vitro screening assays were conducted for Punica granatum rind methanolic extract against three metabolism-related enzymes: α-amylase, tyrosinase, and hyaluronidase. The obtained results showed that the examined extract retained high multitarget inhibition with inhibition percentages 31.5 ± 1.3%, 75.9 ± 4.7%, and 68.5 ± 5.3% against α-amylase, tyrosinase, and hyaluronidase, respectively. Bioguided fractionation of P. granatum rind extract revealed that quercetin is the major active compound with inhibitory activities: 54.3 ± 2.7%, 94.2 ± 3.5%, and 90.9 ± 2.7% against α-amylase, tyrosinase, and hyaluronidase, respectively. Kinetic studies of enzymes showed that quercetin inhibition was noncompetitive, uncompetitive, and competitive for α-amylase, tyrosinase, and hyaluronidase, respectively. The molecular docking of quercetin with α-amylase and hyaluronidase showed high binding energy with different bonds stabilizing the ligand-protein complex. Compiling all obtained results led to conclude that both P. granatum rind extract and quercetin have multitarget activities with potential therapeutic applications in many metabolic disorders.
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Affiliation(s)
- Mohamed H Ahmed
- Departments of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hala M Aldesouki
- Departments of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Farid A Badria
- Departments of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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125
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Garkushina I, Polyakova I, PisarEv O. Effect of gel diffusion on the frontal sorption and desorption of erythromycin by molecularly imprinted polymeric monoliths. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1577452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Irina Garkushina
- Department of Polymer Chemistry, Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Irina Polyakova
- Department of Polymer Chemistry, Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Oleg PisarEv
- Department of Polymer Chemistry, Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg, Russia
- Department of Medical Physics, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia
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Nguyen-Vo TH, Nguyen L, Do N, Nguyen TN, Trinh K, Cao H, Le L. Plant Metabolite Databases: From Herbal Medicines to Modern Drug Discovery. J Chem Inf Model 2020; 60:1101-1110. [PMID: 31873010 DOI: 10.1021/acs.jcim.9b00826] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Traditional herbal medicine has been an inseparable part of the traditional medical science in many countries throughout history. Nowadays, the popularity of using herbal medicines in daily life, as well as clinical practices, has gradually expanded to numerous Western countries with positive impacts and acceptance. The continuous growth of the herbal consumption market has promoted standardization and modernization of herbal-derived products with present pharmacological criteria. To store and extensively share this knowledge with the community and serve scientific research, various herbal metabolite databases have been developed with diverse focuses under the support of modern advances. The advent of these databases has contributed to accelerating research on pharmaceuticals of natural origins. In the scope of this study, we critically review 30 herbal metabolite databases, discuss different related perspectives, and provide a comparative analysis of 18 accessible noncommercial ones. We hope to provide you with fundamental information and multidimensional perspectives from herbal medicines to modern drug discovery.
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Affiliation(s)
- Thanh-Hoang Nguyen-Vo
- School of Mathematics and Statistics, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Loc Nguyen
- Computational Biology Center, International University-VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Nguyet Do
- Computational Biology Center, International University-VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Thien-Ngan Nguyen
- Computational Biology Center, International University-VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Khang Trinh
- Computational Biology Center, International University-VNU HCMC, Ho Chi Minh City 700000, Vietnam
| | - Hung Cao
- The Henry Samueli School of Engineering, University of California at Irvine, Irvine, California 92697, United States
| | - Ly Le
- Computational Biology Center, International University-VNU HCMC, Ho Chi Minh City 700000, Vietnam.,Vingroup Big Data Institute, Ha Noi 100000, Vietnam
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A Review of the Structure-Activity Relationship of Natural and Synthetic Antimetastatic Compounds. Biomolecules 2020; 10:biom10010138. [PMID: 31947704 PMCID: PMC7022821 DOI: 10.3390/biom10010138] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/08/2019] [Accepted: 10/08/2019] [Indexed: 01/05/2023] Open
Abstract
There are innumerable anticancer compounds derived from either natural or synthetic origins. Many of these compounds have been further developed through structural modifications to not only inhibit cancer cell growth but also to exert an antimetastatic effect. This is achieved by attaching different substituents to generate different structure—activity relationships. This review highlights the effectiveness of different functional groups known to have antimigration and antiproliferation activities, such as fluoro, methoxy, methyl, amino, hydroxy, nitro, bromo, chloro, methylamino, ethoxy, carbonyl, iodo, and trifluoromethyl groups. Additionally, the positioning of these functional groups plays an important role in their anticancer activities, which was evident in one of our studies comparing analogues of a natural compound. Thus, this review suggests future recommendations for the design and development of improved anticancer drugs with higher efficacy.
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128
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Fernandes RA, Gorve DA, Pathare RS. Emergence of 2,3,5-trisubstituted tetrahydrofuran natural products and their synthesis. Org Biomol Chem 2020; 18:7002-7025. [PMID: 32966508 DOI: 10.1039/d0ob01542c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The emergence of various 2,3,5-trisubstituted tetrahydrofuran natural products in the recent literature and their synthesis is the focus of this review. These molecules exhibit varied bioactivities and have garnered the interest of several synthetic chemists owing to their efficient synthesis. A few of them have been synthesized and their absolute stereo structure has been confirmed for the first time. These will be appealing candidates in future synthetic investigations along with the untouched molecules. Thus, this compilation will reveal these molecules for expansion of their diversity within the realm of both synthesis and bioactivity studies.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India.
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India.
| | - Ramdas S Pathare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India.
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129
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Zhang B, Saatman KE, Chen L. Therapeutic potential of natural compounds from Chinese medicine in acute and subacute phases of ischemic stroke. Neural Regen Res 2020; 15:416-424. [PMID: 31571650 PMCID: PMC6921351 DOI: 10.4103/1673-5374.265545] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Stroke is one of the leading causes of death and disability in adults worldwide, resulting in huge social and financial burdens. Extracts from herbs, especially those used in Chinese medicine, have emerged as new pharmaceuticals for stroke treatment. Here we review the evidence from preclinical studies investigating neuroprotective properties of Chinese medicinal compounds through their application in acute and subacute phases of ischemic stroke, and highlight potential mechanisms underlying their therapeutic effects. It is noteworthy that many herbal compounds have been shown to target multiple mechanisms and in combinations may exert synergistic effects on signaling pathways, thereby attenuating multiple aspects of ischemic pathology. We conclude the paper with a general discussion of the prospects for novel natural compound-based regimens against stroke.
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Affiliation(s)
- Bei Zhang
- College of Public Health, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, China
| | - Kathryn E Saatman
- Spinal Cord and Brain Injury Research Center, Department of Physiology, University of Kentucky, KY, USA
| | - Lei Chen
- Spinal Cord and Brain Injury Research Center, Department of Physiology, University of Kentucky, KY, USA
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130
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Fundamental physical and chemical concepts behind “drug-likeness” and “natural product-likeness”. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The discovery of a drug is known to be quite cumbersome, both in terms of the microscopic fundamental research behind it and the industrial scale manufacturing process. A major concern in drug discovery is the acceleration of the process and cost reduction. The fact that clinical trials cannot be accelerated, therefore, emphasizes the need to accelerate the strategies for identifying lead compounds at an early stage. We, herein, focus on the definition of what would be regarded as a “drug-like” molecule and a “lead-like” one. In particular, “drug-likeness” is referred to as resemblance to existing drugs, whereas “lead-likeness” is characterized by the similarity with structural and physicochemical properties of a “lead”compound, i.e. a reference compound or a starting point for further drug development. It is now well known that a huge proportion of the drug discovery is inspired or derived from natural products (NPs), which have larger complexity as well as size when compared with synthetic compounds. Therefore, similar definitions of “drug-likeness” and “lead-likeness” cannot be applied for the NP-likeness. Rather, there is the dire need to define and explain NP-likeness in regard to chemical structure. An attempt has been made here to give an overview of the general concepts associated with NP discovery, and to provide the foundational basis for defining a molecule as a “drug”, a “lead” or a “natural compound.”
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Shen D, Hensley K, Denton TT. An overview of sulfur-containing compounds originating from natural metabolites: Lanthionine ketimine and its analogues. Anal Biochem 2019; 591:113543. [PMID: 31862405 DOI: 10.1016/j.ab.2019.113543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/07/2019] [Accepted: 12/11/2019] [Indexed: 01/18/2023]
Affiliation(s)
- Dunxin Shen
- Department Pharmaceutical Sciences, Washington State University, College of Pharmacy & Pharmaceutical Sciences, 412 East Spokane Falls Blvd, Spokane, WA, 99202-2131, USA
| | - Kenneth Hensley
- Department of Biochemistry, Molecular and Cell Sciences, Arkansas College of Osteopathic Medicine, 7000 Chad Colley Blvd, Fort Smith, AR, 72916, USA
| | - Travis T Denton
- Department Pharmaceutical Sciences, Washington State University, College of Pharmacy & Pharmaceutical Sciences, 412 East Spokane Falls Blvd, Spokane, WA, 99202-2131, USA.
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Anti-Tubercular Activity of Substituted 7-Methyl and 7-Formylindolizines and In Silico Study for Prospective Molecular Target Identification. Antibiotics (Basel) 2019; 8:antibiotics8040247. [PMID: 31816928 PMCID: PMC6963442 DOI: 10.3390/antibiotics8040247] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/27/2019] [Accepted: 11/29/2019] [Indexed: 11/17/2022] Open
Abstract
Novel series of diversely substituted indolizines were designed, synthesized, and evaluated for their in vitro anti-mycobacterial activity against H37Rv and multi-drug-resistant (MDR) strains of Mycobacterium tuberculosis (MTB). Many compounds exhibited significant inhibitory activity against MTB H37Rv strains. Indolizines 2d, 2e, and 4 were also found to be active against MTB clinical isolates with multi-resistance to rifampicin and isoniazid. Indolizine 4 was identified as the most promising anti-mycobacterial agent, displaying minimum inhibitory concentration (MIC) values of 4 and 32 μg/mL against H37Rv and MDR strains, respectively. Furthermore, an in silico study was carried out for prospective molecular target identification and revealed favorable interactions with the target enzymes CYP 121, malate synthase, and DNA GyrB ATPase. None of the potent molecules presented toxicity against peripheral blood mononuclear (PBM) cell lines, demonstrating their potentiality to be used for drug-sensitive and drug-resistant tuberculosis therapy.
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Ravi SK, Narasingappa RB, Prasad M, Javagal MR, Vincent B. Cassia tora prevents Aβ 1-42 aggregation, inhibits acetylcholinesterase activity and protects against Aβ 1-42-induced cell death and oxidative stress in human neuroblastoma cells. Pharmacol Rep 2019; 71:1151-1159. [PMID: 31655280 DOI: 10.1016/j.pharep.2019.06.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 06/15/2019] [Accepted: 06/28/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Alzheimer's is a complex neurodegenerative disease and is characterized by extraneuronal accumulation of β-amyloid peptide. Because of its complex nature, multi-target directed ligands (MTDLs) are increasingly being considered as promising anti-Alzheimer therapeutic agents. This study is aimed at determining the effects of Cassia tora ethyl acetate fraction on several Alzheimer-associated deleterious events in test tubes as well as in human neuroblastoma SK-N-SH and SH-SY5Y cell lines. METHOD Ethyl acetate fraction of C. tora was purified by chromatography, characterized by 1H and 13C NMR, and tested for its ability to prevent Aβ 1-42 aggregation by thioflavin-T fluorescence and transmission electron microscopy. We also analyzed the intracellular ROS level and cytotoxicity in SK-N-SH and SH-SY5Y cell lines. RESULTS The extract inhibits the formation of Aβ 1-42 aggregation from monomers and oligomers, as also acetylcholinesterase activity, Aβ 1-42 -induced cell death, and Aβ 1-42 -dependent intracellular ROS production in both SK-N-SH and SH-SY5Y cells. In-depth chromatographic and spectroscopic analysis of the extract revealed that the active molecules are most likely triglycerides of oleic acid (C18H34O2). CONCLUSION We demonstrate for the first time that Cassia tora fraction prevents Aβ 1-42 aggregation, inhibits acetylcholinesterase and alleviates Aβ 1-42 -induced oxidative stress in human neuroblastoma cells. We further suggest the possible use of triglycerides of oleic acid as efficient anti-Alzheimer agents.
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Affiliation(s)
- Sunil K Ravi
- Department of Biotechnology, A constituent College of University of Agriculture Sciences, Bangalore, Karnataka, India
| | - Ramesh B Narasingappa
- Department of Biotechnology, A constituent College of University of Agriculture Sciences, Bangalore, Karnataka, India.
| | - Mahadesh Prasad
- Department of Biochemstry, Pooja Bhagavat Memorial Mahajana Post Graduate Centre, Metagalli, Mysuru, Karnataka, India
| | - Manjunath R Javagal
- Department of Plantation Products, Spices and Flavour Technology, Central Food Technological Research Institute, Mysore, India
| | - Bruno Vincent
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand; Centre National de la Recherche Scientifique, Paris, France
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Silva S, Shimizu JF, Oliveira DMD, Assis LRD, Bittar C, Mottin M, Sousa BKDP, Mesquita NCDMR, Regasini LO, Rahal P, Oliva G, Perryman AL, Ekins S, Andrade CH, Goulart LR, Sabino-Silva R, Merits A, Harris M, Jardim ACG. A diarylamine derived from anthranilic acid inhibits ZIKV replication. Sci Rep 2019; 9:17703. [PMID: 31776405 PMCID: PMC6881388 DOI: 10.1038/s41598-019-54169-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 10/29/2019] [Indexed: 12/13/2022] Open
Abstract
Zika virus (ZIKV) is a mosquito-transmitted Flavivirus, originally identified in Uganda in 1947 and recently associated with a large outbreak in South America. Despite extensive efforts there are currently no approved antiviral compounds for treatment of ZIKV infection. Here we describe the antiviral activity of diarylamines derived from anthranilic acid (FAMs) against ZIKV. A synthetic FAM (E3) demonstrated anti-ZIKV potential by reducing viral replication up to 86%. We analyzed the possible mechanisms of action of FAM E3 by evaluating the intercalation of this compound into the viral dsRNA and its interaction with the RNA polymerase of bacteriophage SP6. However, FAM E3 did not act by these mechanisms. In silico results predicted that FAM E3 might bind to the ZIKV NS3 helicase suggesting that this protein could be one possible target of this compound. To test this, the thermal stability and the ATPase activity of the ZIKV NS3 helicase domain (NS3Hel) were investigated in vitro and we demonstrated that FAM E3 could indeed bind to and stabilize NS3Hel.
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Affiliation(s)
- Suely Silva
- Laboratory of Virology, Institute of Biomedical Science, ICBIM, Federal University of Uberlandia, Uberlândia, MG, Brazil
- São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Jacqueline Farinha Shimizu
- Laboratory of Virology, Institute of Biomedical Science, ICBIM, Federal University of Uberlandia, Uberlândia, MG, Brazil
- São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Débora Moraes de Oliveira
- Laboratory of Virology, Institute of Biomedical Science, ICBIM, Federal University of Uberlandia, Uberlândia, MG, Brazil
| | - Leticia Ribeiro de Assis
- Laboratory of Antibiotics and Chemotherapeutics, São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Cintia Bittar
- São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Melina Mottin
- LabMol - Laboratory of Molecular Modeling and Drug Design, Faculdade de Farmácia, Universidade Federal de Goias, Goiânia, GO, 74605- 170, Brazil
| | - Bruna Katiele de Paula Sousa
- LabMol - Laboratory of Molecular Modeling and Drug Design, Faculdade de Farmácia, Universidade Federal de Goias, Goiânia, GO, 74605- 170, Brazil
| | | | - Luis Octávio Regasini
- Laboratory of Antibiotics and Chemotherapeutics, São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Paula Rahal
- São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil
| | - Glaucius Oliva
- Institute of Physics of São Carlos, University of São Paulo, São Carlos, Brazil
| | - Alexander Luke Perryman
- Department of Pharmacology, Physiology and Neuroscience, Rutgers University-New Jersey Medical School, Newark, NJ 07103, United States
- Repare Therapeutics, 7210 Rue Frederick-Banting, Suite 100, Montreal, QC, H4S 2A1, Canada
| | - Sean Ekins
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC, 27606, United States
| | - Carolina Horta Andrade
- LabMol - Laboratory of Molecular Modeling and Drug Design, Faculdade de Farmácia, Universidade Federal de Goias, Goiânia, GO, 74605- 170, Brazil
| | - Luiz Ricardo Goulart
- Laboratory of Nanobiotechnology, Federal University of Uberlandia, Uberlândia, MG, Brasil
| | - Robinson Sabino-Silva
- Integrative Physiology and Salivary Nanobiotechnology Group, Federal University of Uberlandia, Uberlândia, MG, Brasil
| | - Andres Merits
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Mark Harris
- School of Molecular and Cellular Biology, Faculty of Biological Sciences and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Ana Carolina Gomes Jardim
- Laboratory of Virology, Institute of Biomedical Science, ICBIM, Federal University of Uberlandia, Uberlândia, MG, Brazil.
- São Paulo State University, IBILCE, S. José do Rio Preto, SP, Brazil.
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Affiliation(s)
- Yashpal Singh Malik
- ICAR-Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, Uttar Pradesh India
| | - Raj Kumar Singh
- ICAR-Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, Uttar Pradesh India
| | - Mahendra Pal Yadav
- ICAR-Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, Uttar Pradesh, India, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, India
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AGS-30, an andrographolide derivative, suppresses tumor angiogenesis and growth in vitro and in vivo. Biochem Pharmacol 2019; 171:113694. [PMID: 31706845 DOI: 10.1016/j.bcp.2019.113694] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/04/2019] [Indexed: 12/11/2022]
Abstract
Poor bioavailability and limited efficacy are challenges associated with using andrographolide as a therapeutic agent. We recently synthesized AGS-30, a new andrographolide derivative, in our laboratory. In this study we investigated the potential anti-tumor effect of AGS-30 and the underlying mechanisms, particularly those related to angiogenesis. Results from our in vitro experiments showed that AGS-30 exerted anti-angiogenic effects by inhibiting endothelial cell proliferation, migration, invasion, and tube formation. Phosphorylation and activation of angiogenesis-related signaling molecules (e.g., vascular endothelial growth factor [VEGF] receptor 2, mitogen-activated protein kinase kinase 1/2, extracellular signal-regulated kinase 1/2, mechanistic target of rapamycin [mTOR], protein kinase B [Akt], and p38) were markedly reduced by AGS-30. Meanwhile, AGS-30 potently inhibited cell proliferation and phosphorylation of cell survival-related proteins (e.g., Akt, mTOR, and ERK1/2) and decreased the expression of VEGF in HT-29 colon cancer cells. AGS-30 blocked microvessel sprouting in a rat aortic ring model and blood vessel formation in zebrafish embryos and a mouse Matrigel plug model. Additionally, AGS-30 suppressed tumor growth and angiogenesis in HT-29 colon cancer cell xenografts in nude mice. These effects were not observed when same concentration of andrographolide, the parent compound of AGS-30, was used. Thus, AGS-30 exerted a strong antitumor effect by inhibiting tumor cell growth and angiogenesis and is a candidate compound for the treatment of cancer.
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137
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Bayrak N, Yıldırım H, Yıldız M, Radwan MO, Otsuka M, Fujita M, Tuyun AF, Ciftci HI. Design, synthesis, and biological activity of Plastoquinone analogs as a new class of anticancer agents. Bioorg Chem 2019; 92:103255. [DOI: 10.1016/j.bioorg.2019.103255] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 07/30/2019] [Accepted: 09/04/2019] [Indexed: 12/31/2022]
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Johny J, Kontham V, Veeragoni D, Misra S, Kaki SS. Bioorganic synthesis, characterization and evaluation of a natural phenolic lipid. ACTA ACUST UNITED AC 2019; 24:e00375. [PMID: 31641619 PMCID: PMC6796520 DOI: 10.1016/j.btre.2019.e00375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 11/08/2022]
Abstract
First bioorganic synthesis of a novel phenolic lipid isolated from natural source. The phenolic lipid was synthesized following a chemo-enzymatic approach. Lipase-catalyzed transformation was employed in the synthesis. The prepared phenolic lipid exhibited excellent antioxidant potential. The prepared phenolic lipid could have great potential in food and cosmetic formulations.
The first synthesis of a phenolic natural monoacylglycerol (1- [11-(ferulyloxy) undecanoyl)] glycerol) was carried out by bioorganic synthesis starting from ferulic acid. The synthetic route of the target lipidic compound was designed involving a chemo-enzymatic approach using immobilized Candida antarctica lipase as biocatalyst in two of the steps conducted in organic medium. The prepared lipidic compound was characterized by using spectral data and evaluated for antimicrobial, antioxidant and cytotoxic studies to examine its potential. The synthesized compound showed moderate antimicrobial activity and showed very good antioxidant activity in DPPH radical scavenging assay and also in oxidation inhibition in soybean oil by differential scanning calorimetry. The cytotoxic studies of the synthetic lipid showed promising activity against A549 and HeLa cancer cell lines with IC50 values of 9.102 and 9.886 μM respectively. The prepared compound can be useful in designing novel phenolic lipids with potential applications in cosmetic and biomedical fields.
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Affiliation(s)
- Juliya Johny
- Centre for Lipid Science & Technology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007, India
| | - Venkateshwarlu Kontham
- Centre for Lipid Science & Technology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007, India
| | - Dileep Veeragoni
- Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007, India
| | - Sunil Misra
- Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007, India
| | - Shiva Shanker Kaki
- Centre for Lipid Science & Technology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007, India
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Vechi G, da Silva RDCMVDAF, de Souza P, da Silva LM, de Andrade SF, Cechinel Filho V. Cryptostrobin and catechin isolated from Eugenia mattosii D. Legrand leaves induce endothelium-dependent and independent relaxation in spontaneously hypertensive rat aorta. Pharmacol Rep 2019; 71:950-957. [PMID: 31454698 DOI: 10.1016/j.pharep.2019.05.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 05/03/2019] [Accepted: 05/13/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Considering the therapeutic potential of phenolic compounds, the purpose of the present study was to investigate the mechanisms involved in the relaxation induced by cryptostrobin and catechin, isolated from Eugenia mattosii D. Legrand leaves, in the aorta of spontaneously hypertensive rats (SHR). METHODS The thoracic aorta was isolated from SHR and kept in the organ bath system by recording contractile or relaxant responses. RESULTS The addition of cumulative concentrations of cryptostrobin and catechin induced endothelium-dependent and-independent relaxation in aorta rings from SHR, as well as both compounds were effective in reducing phenylephrine-induced contraction. Pretreatment of aortic rings with Nω-nitro-l-arginine methylester (L-NAME, an inhibitor of nitric oxide synthase) or 1H-[1,2,4] oxadiazolo[4,3-a]quinoxalin-1-one (ODQ, an inhibitor of soluble guanylate cyclase), resulted in a significant change of relaxant effect induced by catechin, and a slight influence on cryptostrobin-induced relaxation. Muscarinic receptor and potassium channels are involved in catechin-induced relaxation as assessed using atropine (a muscarinic receptor antagonist), tetraethylammonium (a non-selective K+ channel blocker) and glibenclamide (an ATP-sensitive K+ channel blocker). Conversely, cryptostrobin, but not catechin, blunted the contraction induced by the addition of phenylephrine in a calcium-free solution. Besides that, cryptostrobin attenuated the contraction of rat aorta rings induced by internal Ca2+ release and external Ca2+ influx. CONCLUSIONS These findings indicated that cryptostrobin and catechin alter vascular smooth muscle reactivity, and this effect may be involved, at least in part, by enhancing the endothelium NO/cGMP pathway and potassium channels activation. In addition, cryptostrobin reduced the phenylephrine, KCl and CaCl2-induced contractions in a calcium-free solution.
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Affiliation(s)
- Giovana Vechi
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | | | - Priscila de Souza
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Luísa Mota da Silva
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Sérgio Faloni de Andrade
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Valdir Cechinel Filho
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade do Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
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Hashemian M, Ghasemi-Kasman M, Ghasemi S, Akbari A, Moalem-Banhangi M, Zare L, Ahmadian SR. Fabrication and evaluation of novel quercetin-conjugated Fe 3O 4-β-cyclodextrin nanoparticles for potential use in epilepsy disorder. Int J Nanomedicine 2019; 14:6481-6495. [PMID: 31496698 PMCID: PMC6698168 DOI: 10.2147/ijn.s218317] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/19/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Despite the numerous pharmacological activities of quercetin, its biomedical application has been hampered, because of poor water solubility and low oral bioavailability. In the present study, we fabricated a novel form of quercetin-conjugated Fe3O4-β-cyclodextrin (βCD) nanoparticles (NPs), and the effect of these prepared NPs was evaluated in a chronic model of epilepsy. METHODS Quercetin-loaded NPs were prepared using an iron oxide core coated with βCD and pluronic F68 polymer. The chronic model of epilepsy was developed by intraperitoneal injection of pentylenetetrazole (PTZ) at dose of 36.5 mg/kg every second day. Quercetin or its nanoformulation at doses of 25 or 50 mg/kg were administered intraperitoneally 10 days before PTZ injections and their applications continued 1 hour before each PTZ injection. Immunostaining was performed to evaluate the neuronal density and astrocyte activation of hippocampi. RESULTS Our data showed successful fabrication of quercetin onto Fe3O4-βCD NPs. In comparison to free quercetin, quercetin NPs markedly reduced seizure behavior, neuronal loss, and astrocyte activation in a PTZ-induced kindling model. CONCLUSION Overall, quercetin-Fe3O4-βCD NPs might be regarded as an ideal therapeutic approach in epilepsy disorder.
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Affiliation(s)
- Mona Hashemian
- Student Research Committee, Babol University of Medical Sciences
, Babol, Iran
| | - Maryam Ghasemi-Kasman
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences
, Babol, Iran
- Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences
, Babol, Iran
| | - Shahram Ghasemi
- Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Atefeh Akbari
- Infertility and Reproductive Health Research Center, Health Research Institute, Babol University of Medical Sciences
, Babol, Iran
| | | | - Leila Zare
- Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences
, Babol, Iran
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Li C, Zhou Y, Cai Y, Shui C, Liu W, Wang X, Jiang J, Zeng D, Gui C, Sun R. Parthenolide Inhibits the Proliferation of MDA-T32 Papillary Thyroid Carcinoma Cells in Vitro and in Mouse Tumor Xenografts and Activates Autophagy and Apoptosis by Downregulation of the Mammalian Target of Rapamycin (mTOR)/PI3K/AKT Signaling Pathway. Med Sci Monit 2019; 25:5054-5061. [PMID: 31322140 PMCID: PMC6637819 DOI: 10.12659/msm.915387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background This study aimed to examine the effects of the sesquiterpene lactone, parthenolide, on migration, autophagy, and apoptosis of MDA-T32 human papillary thyroid carcinoma cells in vitro and in mouse tumor xenografts. Material/Methods Cell proliferation and viability of MDA-T32 human papillary thyroid carcinoma cells were determined by MTT assay, and cell migration was studied using a transwell assay. Fluorescence microscopy using acridine orange (AO) and ethidium bromide (EB) staining evaluated apoptosis. Transmission electron microscopy was used to study the effects of parthenolide on autophagy, and Western blot examined the levels of autophagy-associated proteins, including Bax, Bcl-2, and LC3-ll. Mice (n=10) were injected with 5×106 MDA-T32 cells subcutaneously into the left flank, and xenograft tumors were grown for six weeks. Control untreated mice (n=5) were compared with treated mice (n=5) given parthenolide three times per week. Results Parthenolide resulted in a dose-dependent reduction in viability and cell migration of MDA-T32 cells, with a half-maximal inhibitory concentration (IC50) of 12 μM. AO and EB staining showed that parthenolide induced cell apoptosis and electron microscopy identified autophagosomes in MDA-T32 cells. Parthenolide induced increased expression of the autophagocytic proteins, LC3-II and beclin-1, had a dose-dependent inhibitory effect on the mTOR/PI3K/AKT cascade in MDA-T32 cells and inhibited the growth of the mouse xenograft tumors in vivo. Conclusions Parthenolide inhibited the growth and migration of MDA-T32 human papillary thyroid carcinoma cells in vitro and mouse tumor xenografts and activated autophagy and apoptosis by downregulation of the mTOR/PI3K/AKT signaling pathway.
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Affiliation(s)
- Chao Li
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Yuqiu Zhou
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Yongcong Cai
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Chunyan Shui
- Department of Otolaryngology - Head and Neck Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China (mainland)
| | - Wei Liu
- Department of Otolaryngology - Head and Neck Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China (mainland)
| | - Xu Wang
- Graduate School, Chengdu Medical College, Chengdu, Sichuan, China (mainland)
| | - Jian Jiang
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Dingfen Zeng
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Chunhan Gui
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
| | - Ronghao Sun
- Department of Head and Neck Surgery, Sichuan Provincial Cancer Hospital, Chengdu, Sichuan, China (mainland)
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Venugopala KN, Chandrashekharappa S, Pillay M, Abdallah HH, Mahomoodally FM, Bhandary S, Chopra D, Attimarad M, Aldhubiab BE, Nair AB, Sreeharsha N, Morsy MA, Pottathil S, Venugopala R, Odhav B, Mlisana K. Computational, crystallographic studies, cytotoxicity and anti-tubercular activity of substituted 7-methoxy-indolizine analogues. PLoS One 2019; 14:e0217270. [PMID: 31163040 PMCID: PMC6548424 DOI: 10.1371/journal.pone.0217270] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/08/2019] [Indexed: 11/18/2022] Open
Abstract
Indolizines are heteroaromatic compounds, and their synthetic analogues have reportedly showed promising pharmacological properties. In this study, a series of synthetic 7-methoxy-indolizine derivatives were synthesised, characterised and evaluated for in vitro whole-cell anti-tuberculosis (TB) screening against susceptible (H37Rv) and multi-drug-resistant (MDR) strains of Mycobacterium tuberculosis (MTB) using the resazurin microplate assay method. The cytotoxicity was evaluated using the MTT assay. In silico molecular-docking study was conducted for compounds 5a-j against enoyl-[acyl-carrier] protein reductase, a key enzyme of the type II fatty acid synthesis that has attracted much interest for the development of novel anti-TB compounds. Thereafter, molecular dynamic (MD) simulation was undertaken for the most active inhibitors. Compounds 5i and 5j with the methoxy functional group at the meta position of the benzoyl group, which was at the third position of the indolizine nucleus, demonstrated encouraging anti-TB activity against MDR strains of MTB at 16 μg/mL. In silico studies showed binding affinity within the range of 7.07-8.57 kcal/mol, with 5i showing the highest binding affinity. Hydrogen bonding, π-π- interactions, and electrostatic interactions were common with the active site. Most of these interactions occurred with the catalytic amino acids (Pro193, Tyr158, Phe149, and Lys165). MD simulation showed that 5j possessed the highest binding affinity toward the enzyme, according to the two calculation methods (MM/PBSA and MM/GBSA). The single-crystal X-ray studies of compounds 5c and 5d revealed that the molecular arrangements in these two structures were mostly guided by C-H···O hydrogen-bonded dimeric motifs and C-H···N hydrogen bonds, while various secondary interactions (such as π···π and C-H···F) also contributed to crystal formation. Compounds 5a, 5c, 5i, and 5j exhibited no toxicity up to 500 μg/mL. In conclusion, 5i and 5j are promising anti-TB compounds that have shown high affinity based on docking and MD simulation results.
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Affiliation(s)
- Katharigatta Narayanaswamy Venugopala
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
- * E-mail:
| | | | - Melendhran Pillay
- Department of Microbiology, National Health Laboratory Services, KZN Academic Complex, Inkosi Albert Luthuli Central Hospital, Durban, South Africa
| | - Hassan H. Abdallah
- School of Pharmacy, Universiti Sains Malaysia, Penang, Malaysia
- Chemistry Department, College of Education, Salahaddin University, Erbil, Iraq
| | - Fawzi M. Mahomoodally
- Department of Health Sciences, Faculty of Science, University of Mauritius, Réduit, Mauritius
| | - Subhrajyoti Bhandary
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, Madhya Pradesh, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, Madhya Pradesh, India
| | - Mahesh Attimarad
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | - Bandar E. Aldhubiab
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | - Anroop B. Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | - Nagaraja Sreeharsha
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | - Mohamed A. Morsy
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
- Department of Pharmacology, Faculty of Medicine, Minia University, El-Minia, Egypt
| | - Shinu Pottathil
- Department of Biomedical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | - Rashmi Venugopala
- Department of Public Health Medicine, University of KwaZulu-Natal, Howard College Campus, Durban, South Africa
| | - Bharti Odhav
- Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa
| | - Koleka Mlisana
- Department of Microbiology, National Health Laboratory Services, KZN Academic Complex, Inkosi Albert Luthuli Central Hospital, Durban, South Africa
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143
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Sim WS, Choi SI, Cho BY, Choi SH, Han X, Cho HD, Kim SH, Lee BY, Kang IJ, Cho JH, Lee OH. Anti-Obesity Effect of Extract from Nelumbo Nucifera L., Morus Alba L., and Raphanus Sativus Mixture in 3T3-L1 Adipocytes and C57BL/6J Obese Mice. Foods 2019; 8:E170. [PMID: 31109115 PMCID: PMC6560450 DOI: 10.3390/foods8050170] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022] Open
Abstract
The antioxidant and anti-adipogenic activities of a mixture of Nelumbo nucifera L., Morus alba L., and Raphanus sativus were investigated and their anti-obesity activities were established in vitro and in vivo. Among the 26 different mixtures of extraction solvent and mixture ratios, ethanol extract mixture no. 1 (EM01) showed the highest antioxidant (α,α-Diphenyl-β-picrylhydrazyl, total phenolic contents) and anti-adipogenic (Oil-Red O staining) activities. EM01 inhibited lipid accumulation in 3T3-L1 adipocytes compared to quercetin-3-O-glucuronide. Furthermore, body, liver, and adipose tissue weights decreased in the high-fat diet (HFD)-EM01 group compared to in the high-fat diet control group (HFD-CTL). EM01 lowered blood glucose levels elevated by the HFD. Lipid profiles were improved following EM01 treatment. Serum adiponectin significantly increased, while leptin, insulin growth factor-1, non-esterified fatty acid, and glucose significantly decreased in the HFD-EM01 group. Adipogenesis and lipogenesis-related genes were suppressed, while fat oxidation-related genes increased following EM01 administration. Thus, EM01 may be a natural anti-obesity agent.
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Affiliation(s)
- Wan-Sup Sim
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
| | - Sun-Il Choi
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
| | - Bong-Yeon Cho
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
| | - Seung-Hyun Choi
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
| | - Xionggao Han
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
| | | | - Seung-Hyung Kim
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon 34520, Korea.
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, CHA University, Seongam, Gyeonggi 13488, Korea.
| | - Il-Jun Kang
- Department of Food Science and Nutrition, Hallym University, Chuncheon 24252, Korea.
| | | | - Ok-Hwan Lee
- Department of food science and biotechnology, Kangwon National University, Chuncheon 24341, Korea.
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144
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Gezici S, Şekeroğlu N. Current Perspectives in the Application of Medicinal Plants Against Cancer: Novel Therapeutic Agents. Anticancer Agents Med Chem 2019; 19:101-111. [DOI: 10.2174/1871520619666181224121004] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 09/15/2018] [Accepted: 12/10/2018] [Indexed: 01/11/2023]
Abstract
Background:
Cancer is a disease characterized by uncontrolled cell growth and proliferation. It
has become a major health problem in the past decades and is now the second leading cause of death globally.
Although, there are different types of treatment such as chemotherapy, immune therapy, radiation, hormone
therapy and targeted therapy used against cancer, they have possible side effects and significant deficiencies.
Methods:
This review aims to outline the benefits of medicinal plants and plant-derived products and highlight
why they should be used as novel anti-cancer therapeutics. Electronic databases, including PubMed, Scopus,
ScienceDirect, Cochrane library, and MedlinePlus were searched to summarize in vitro, in vivo and clinical
studies on anticancer effects of medicinal plants and their bioactive compounds up-to-date.
Results:
In recent years, a number of medicinal plants have been administered to cancer patients in order to
prevent and treat cancer as an alternative therapy. These plants were used because of their rich anticarcinogenic
and chemoprotective potentials. In addition to these remarkable properties, these plants have less toxic anticancer,
anti-tumor and anti-proliferation agents than traditional therapeutics. Nevertheless, only a small number
of natural anti-tumor products including vinblastine, vincristine, podophyllotoxin, paclitaxel (Taxol) and camptothecin
have been tested clinically, while vinflunine ditartrate, anhydrovinblastine, NK-611, tafluposide, paclitaxel
poliglumex, combretastatins, salvicine, curcumin, indirubin, triptolide, homoharringtonine are still on trial.
Conclusion:
Consequently, more effective anticancer compounds are identified during the clinical trials; these
natural products could be a key source of antitumor agents in modern anticancer therapy. It is expected that
novel anticancer phytopharmaceuticals produced from medicinal plants could be effectively used in prevention
and therapy for the cancers.
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Affiliation(s)
- Sevgi Gezici
- Department of Molecular Biology and Genetics, Faculty of Science and Literature; Advanced Technology Application and Research Center, Kilis 7 Aralik University, 79000 Kilis, Turkey
| | - Nazım Şekeroğlu
- Department of Food Engineering, Faculty of Engineering and Architecture; Advanced Technology Application and Research Center, Kilis 7 Aralik University, 79000 Kilis, Turkey
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145
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Characterization and engineering of the Lrp/AsnC family regulator SACE_5717 for erythromycin overproduction in Saccharopolyspora erythraea. J Ind Microbiol Biotechnol 2019; 46:1013-1024. [PMID: 31016583 DOI: 10.1007/s10295-019-02178-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/04/2019] [Indexed: 10/27/2022]
Abstract
In this work, we found that the Lrp/AsnC family protein SACE_5717 negatively regulated erythromycin biosynthesis in S. erythraea. Disruption of SACE_5717 led to a 27% improvement in the yield of erythromycin in S. erythraea A226. SACE_5717 directly repressed its own gene expression, as well as that of the adjacent gene SACE_5716 by binding to the target sequence 5'-GAACGTTCGCCGTCACGCC-3'. The predicted LysE superfamily protein SACE_5716 directly influenced the export of lysine, histidine, threonine and glycine in S. erythraea. Arginine, tyrosine and tryptophan were characterized as the effectors of SACE_5717 by weakening the binding affinity of SACE_5717. In the industrial S. erythraea WB strain, deletion of SACE_5717 (WBΔSACE_5717) increased erythromycin yield by 20%, and by 36% when SACE_5716 was overexpressed in WBΔSACE_5717 (WBΔSACE_5717/5716). In large-scale 5-L fermentation experiment, erythromycin yield in the engineered strain WBΔSACE_5717/5716 reached 4686 mg/L, a 41% enhancement over 3323 mg/L of the parent WB strain.
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146
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Tewari D, Hohmann J, Kiss AK, Rollinger JM, Atanasov AG. Editorial: Ethnopharmacology in Central and Eastern Europe in the Context of Global Research Developments. Front Pharmacol 2019; 10:341. [PMID: 31024309 PMCID: PMC6465720 DOI: 10.3389/fphar.2019.00341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 03/19/2019] [Indexed: 12/02/2022] Open
Affiliation(s)
- Devesh Tewari
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Judit Hohmann
- Department of Pharmacognosy, University of Szeged, Szeged, Hungary
| | - Anna K Kiss
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Warsaw, Poland
| | | | - Atanas G Atanasov
- Department of Pharmacognosy, University of Vienna, Vienna, Austria.,Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Magdalenka, Poland.,GLOBE Program Association (GLOBE-PA), Grandville, MI, United States
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147
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Prescreening of Natural Products in Drug Discovery Using Recombinant Bioluminescent Bacteria. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-018-0384-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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148
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Tiwari A, Kumar A, Srivastava G, Sharma A. Screening of Anti-mycobacterial Phytochemical Compounds for Potential Inhibitors against Mycobacterium Tuberculosis Isocitrate Lyase. Curr Top Med Chem 2019; 19:600-608. [PMID: 30836915 DOI: 10.2174/1568026619666190304125603] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 10/12/2018] [Accepted: 11/05/2018] [Indexed: 11/22/2022]
Abstract
Background and Introduction: Tuberculosis (TB) is a leading infectious disease caused by Mycobacterium tuberculosiswith high morbidity and mortality. Isocitrate lyase (MtbICL), a key enzyme of glyoxylate pathway has been shown to be involved in mycobacterial persistence, is attractive drug target against persistent tuberculosis. METHODS Virtual screening, molecular docking and MD simulation study has been integrated for screening of phytochemical based anti-mycobacterial compounds. Docking study of reported MtbICL inhibitors has shown an average binding affinity score -7.30 Kcal/mol. In virtual screening, compounds exhibiting lower binding energy than calculated average binding energy were selected as top hit compounds followed by calculation of drug likeness property. Relationship between experimental IC50 value and calculated binding gibbs free energy of reported inhibitors was also calculated through regression analysis to predict IC50 value of potential inhibitors. RESULTS Docking and MD simulation studies of top hit compounds have identified shinjudilactone (quassinoid), lecheronol A (pimarane) and caniojane (diterpene) as potential MtbICL inhibitors. CONCLUSION Phytochemical based anti-mycobacterial compound can further developed into effective drugs against persistence tuberculosis with lesser toxicity and side effects.
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Affiliation(s)
- Ashish Tiwari
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plant (CIMAP), Lucknow-226015, Uttar Pradesh, India
| | - Akhil Kumar
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plant (CIMAP), Lucknow-226015, Uttar Pradesh, India
| | - Gaurava Srivastava
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plant (CIMAP), Lucknow-226015, Uttar Pradesh, India
| | - Ashok Sharma
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plant (CIMAP), Lucknow-226015, Uttar Pradesh, India
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149
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Wu C, Shang Z, Lemetre C, Ternei MA, Brady SF. Cadasides, Calcium-Dependent Acidic Lipopeptides from the Soil Metagenome That Are Active against Multidrug-Resistant Bacteria. J Am Chem Soc 2019; 141:3910-3919. [PMID: 30735616 PMCID: PMC6592427 DOI: 10.1021/jacs.8b12087] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The growing threat of antibiotic resistance necessitates the discovery of antibiotics that are active against resistant pathogens. Calcium-dependent antibiotics are a small family of structurally diverse acidic lipopeptides assembled by nonribosomal peptide synthetases (NRPSs) that are known to display various modes of action against antibiotic-resistant pathogens. Here we use NRPS adenylation (AD) domain sequencing to guide the identification, recovery, and cloning of the cde biosynthetic gene cluster from a soil metagenome. Heterologous expression of the cde biosynthetic gene cluster led to the production of cadasides A (1) and B (2), a subfamily of acidic lipopeptides that is distinct from previously characterized calcium-dependent antibiotics in terms of both overall structure and acidic residue rich peptide core. The cadasides inhibit the growth of multidrug-resistant Gram-positive pathogens by disrupting cell wall biosynthesis in the presence of high concentrations of calcium. Interestingly, sequencing of AD domains from diverse soils revealed that sequences predicted to arise from cadaside-like gene clusters are predominantly found in soils containing high levels of calcium carbonate.
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Affiliation(s)
| | | | - Christophe Lemetre
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, New York, NY 10065
| | - Melinda A. Ternei
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, New York, NY 10065
| | - Sean F. Brady
- Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, New York, NY 10065
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150
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Grote M, Schulz F. Exploring the Promiscuous Enzymatic Activation of Unnatural Polyketide Extender Units in Vitro and in Vivo for Monensin Biosynthesis. Chembiochem 2019; 20:1183-1189. [DOI: 10.1002/cbic.201800734] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Marius Grote
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrassee 150 44780 Bochum Germany
| | - Frank Schulz
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstrassee 150 44780 Bochum Germany
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