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Ghatak K, Huynh HV. Palladium hetero‐di(N‐heterocyclic carbene) complexes and their catalytic activities in direct C−H arylation of heteroarenes. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kausani Ghatak
- Department of Chemistry National University of Singapore Singapore
| | - Han Vinh Huynh
- Department of Chemistry National University of Singapore Singapore
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2
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Thompson JC, Dao WT, Ku A, Rodriguez-Beltran SL, Amezcua M, Palomino AY, Lien T, Salzameda NT. Synthesis and activity of isoleucine sulfonamide derivatives as novel botulinum neurotoxin serotype A light chain inhibitors. Bioorg Med Chem 2020; 28:115659. [PMID: 32828426 DOI: 10.1016/j.bmc.2020.115659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/07/2020] [Accepted: 07/10/2020] [Indexed: 11/20/2022]
Abstract
The botulinum neurotoxin (BoNT) is the most lethal protein known to man causing the deadly disease botulinum. The neurotoxin, composed of a heavy (HC) and light (LC) chain, work in concert to cause muscle paralysis. A therapeutic strategy to treat individuals infected with the neurotoxin is inhibiting the catalytic activity of the BoNT LC. We report the synthesis, inhibition study and computational docking analysis of novel small molecule BoNT/A LC inhibitors. A structure activity relationship study resulted in the discovery of d-isoleucine functionalized with a hydroxamic acid on the C-terminal and a biphenyl with chlorine at C- 2 connected by a sulfonamide linker at the N-terminus. This compound has a measured IC50 of 0.587 µM for the BoNT/A LC. Computational docking analysis indicates the sulfonamide linker adopts a geometry that is advantageous for binding to the BoNT LC active site. In addition, Arg363 is predicted to be involved in key binding interactions with the scaffold in this study.
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Affiliation(s)
- Jordan C Thompson
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Wendy T Dao
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Alex Ku
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Sandra L Rodriguez-Beltran
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Martin Amezcua
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Alejandra Y Palomino
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Thanh Lien
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA
| | - Nicholas T Salzameda
- Department of Chemistry & Biochemistry, California State University, 800 N. State College, Fullerton, CA, 92834, USA.
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3
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Sheng HY, Chen H, Liao M, Peng N, Yang M, Cai Q, Liu Y. Copper-catalyzed Tandem Cyclization to Access 4-Aminoquinoline Derivatives. CHEM LETT 2020. [DOI: 10.1246/cl.200053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hui-Yang Sheng
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Hui Chen
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Meng Liao
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Na Peng
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Mian Yang
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Qun Cai
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Yi Liu
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
- Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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4
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Joshi MC, Egan TJ. Quinoline Containing Side-chain Antimalarial Analogs: Recent Advances and Therapeutic Application. Curr Top Med Chem 2020; 20:617-697. [DOI: 10.2174/1568026620666200127141550] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 01/16/2023]
Abstract
The side-chains of quinoline antimalarial agents are the major concern of focus to build
novel and efficaciaous bioactive and clinical antimalarials. Bioative antimalarial analogs may play a
critical role in pH trapping in the food vacuole of RBC’s with the help of fragmented amino acid, thus
lead to β-hematin inhibition. Here, the authors tried to summarize a useful, comprehensive compilation
of side-chain modified ACQs along with their synthesis, biophysical and therapeutic applications etc.
of potent antiplasmodial agents and therefore, opening the door towards the potential clinical status.
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Affiliation(s)
- Mukesh C. Joshi
- Department of Chemistry, Motilal Nehru College, Benito Juarez Marg, South Campus, University of Delhi, New Delhi- 110021, India
| | - Timothy J. Egan
- Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa
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5
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A. Ismail M, M. El-Sayed W, Shaaban S, A. Abdelwahab G, S. Hamama W. A Review of Cationic Arylfurans and Their Isosteres: Synthesis and Biological Importance. CURR ORG CHEM 2020. [DOI: 10.2174/1385272823666191029114830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present study provides an overview of the chemistry and biological importance
of the cationic chalcophene derivatives (furans, thiophenes and selenophenes). The
summarized literature survey includes synthetic methods, reactivity and biological activities
of aryl/hetarylchalcophenes that have been reported mainly from 2001 to 2019 focusing
on monochalcophenes. A discussion demonstrating the proposed mechanisms of some
interesting synthetic routes and linking structure features to biological activities is presented.
These classes of compounds including cationic chalcophenes possess antiproliferative,
antimicrobial and antiprotozoal activities. This review highlights recent advances
for arylchalcophene derivatives and may contribute to the design and structure optimization
of new chalcophene derivatives in the future.
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Affiliation(s)
- Mohamed A. Ismail
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wael M. El-Sayed
- Department of Zoology, Faculty of Science, University of Ain Shams, Abbassia 11566, Cairo, Egypt
| | - Saad Shaaban
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Ghada A. Abdelwahab
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wafaa S. Hamama
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
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6
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Manzano JI, Konstantinović J, Scaccabarozzi D, Perea A, Pavić A, Cavicchini L, Basilico N, Gamarro F, Šolaja BA. 4-Aminoquinoline-based compounds as antileishmanial agents that inhibit the energy metabolism of Leishmania. Eur J Med Chem 2019; 180:28-40. [DOI: 10.1016/j.ejmech.2019.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 01/06/2023]
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7
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Senerovic L, Opsenica D, Moric I, Aleksic I, Spasić M, Vasiljevic B. Quinolines and Quinolones as Antibacterial, Antifungal, Anti-virulence, Antiviral and Anti-parasitic Agents. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1282:37-69. [PMID: 31515709 DOI: 10.1007/5584_2019_428] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Infective diseases have become health threat of a global proportion due to appearance and spread of microorganisms resistant to majority of therapeutics currently used for their treatment. Therefore, there is a constant need for development of new antimicrobial agents, as well as novel therapeutic strategies. Quinolines and quinolones, isolated from plants, animals, and microorganisms, have demonstrated numerous biological activities such as antimicrobial, insecticidal, anti-inflammatory, antiplatelet, and antitumor. For more than two centuries quinoline/quinolone moiety has been used as a scaffold for drug development and even today it represents an inexhaustible inspiration for design and development of novel semi-synthetic or synthetic agents exhibiting broad spectrum of bioactivities. The structural diversity of synthetized compounds provides high and selective activity attained through different mechanisms of action, as well as low toxicity on human cells. This review describes quinoline and quinolone derivatives with antibacterial, antifungal, anti-virulent, antiviral, and anti-parasitic activities with the focus on the last 10 years literature.
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Affiliation(s)
- Lidija Senerovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia.
| | - Dejan Opsenica
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
- Center of excellence in Environmental Chemistry and Engineering, ICTM - University of Belgrade, Belgrade, Serbia
| | - Ivana Moric
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Ivana Aleksic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Marta Spasić
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | - Branka Vasiljevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
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8
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Quinoline and quinolone dimers and their biological activities: An overview. Eur J Med Chem 2019; 161:101-117. [DOI: 10.1016/j.ejmech.2018.10.035] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 01/28/2023]
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9
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Natural Compounds and Their Analogues as Potent Antidotes against the Most Poisonous Bacterial Toxin. Appl Environ Microbiol 2018; 84:AEM.01280-18. [PMID: 30389764 DOI: 10.1128/aem.01280-18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 09/28/2018] [Indexed: 01/30/2023] Open
Abstract
Botulinum neurotoxins (BoNTs), the most poisonous proteins known to humankind, are a family of seven (serotype A to G) immunologically distinct proteins synthesized primarily by different strains of the anaerobic bacterium Clostridium botulinum Being the causative agents of botulism, the toxins block neurotransmitter release by specifically cleaving one of the three soluble N-ethylmaleimide-sensitive factor attachment receptor (SNARE) proteins, thereby inducing flaccid paralysis. The development of countermeasures and therapeutics against BoNTs is a high-priority research area for public health because of their extreme toxicity and potential for use as biowarfare agents. Extensive research has focused on designing antagonists that block the catalytic activity of BoNTs. In this study, we screened 300 small natural compounds and their analogues extracted from Indian plants for their activity against BoNT serotype A (BoNT/A) as well as its light chain (LCA) using biochemical and cellular assays. One natural compound, a nitrophenyl psoralen (NPP), was identified to be a specific inhibitor of LCA with an in vitro 50% inhibitory concentration (IC50) value of 4.74 ± 0.03 µM. NPP was able to rescue endogenous synaptosome-associated protein 25 (SNAP-25) from cleavage by BoNT/A in human neuroblastoma cells with an IC50 of 12.2 ± 1.7 µM, as well as to prolong the time to the blocking of neutrally elicited twitch tensions in isolated mouse phrenic nerve-hemidiaphragm preparations.IMPORTANCE The long-lasting endopeptidase activity of BoNT is a critical biological activity inside the nerve cell, as it prompts proteolysis of the SNARE proteins, involved in the exocytosis of the neurotransmitter acetylcholine. Thus, the BoNT endopeptidase activity is an appropriate clinical target for designing new small-molecule antidotes against BoNT with the potential to reverse the paralysis syndrome of botulism. In principle, small-molecule inhibitors (SMIs) can gain entry into BoNT-intoxicated cells if they have a suitable octanol-water partition coefficient (log P) value and other favorable characteristics (P. Leeson, Nature 481:455-456, 2012, https://doi.org/10.1038/481455a). Several efforts have been made in the past to develop SMIs, but inhibitors effective under in vitro conditions have not in general been effective in vivo or in cellular models (L. M. Eubanks, M. S. Hixon, W. Jin, S. Hong, et al., Proc Natl Acad Sci U S A 104:2602-2607, 2007, https://doi.org/10.1073/pnas.0611213104). The difference between the in vitro and cellular efficacy presumably results from difficulties experienced by the compounds in crossing the cell membrane, in conjunction with poor bioavailability and high cytotoxicity. The screened nitrophenyl psoralen (NPP) effectively antagonized BoNT/A in both in vitro and ex vivo assays. Importantly, NPP inhibited the BoNT/A light chain but not other general zinc endopeptidases, such as thermolysin, suggesting high selectivity for its target. Small-molecule (nonpeptidic) inhibitors have better oral bioavailability, better stability, and better tissue and cell permeation than antitoxins or peptide inhibitors.
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10
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Konstantinović J, Kiris E, Kota KP, Kugelman-Tonos J, Videnović M, Cazares LH, Terzić Jovanović N, Verbić TŽ, Andjelković B, Duplantier AJ, Bavari S, Šolaja BA. New Steroidal 4-Aminoquinolines Antagonize Botulinum Neurotoxin Serotype A in Mouse Embryonic Stem Cell Derived Motor Neurons in Postintoxication Model. J Med Chem 2018; 61:1595-1608. [PMID: 29385334 DOI: 10.1021/acs.jmedchem.7b01710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The synthesis and inhibitory potencies against botulinum neurotoxin serotype A light chain (BoNT/A LC) using in vitro HPLC based enzymatic assay for various steroidal, benzothiophene, thiophene, and adamantane 4-aminoquinoline derivatives are described. In addition, the compounds were evaluated for the activity against BoNT/A holotoxin in mouse embryonic stem cell derived motor neurons. Steroidal derivative 16 showed remarkable protection (up to 89% of uncleaved SNAP-25) even when administered 30 min postintoxication. This appears to be the first example of LC inhibitors antagonizing BoNT intoxication in mouse embryonic stem cell derived motor neurons (mES-MNs) in a postexposure model. Oral administration of 16 was well tolerated in the mouse up to 600 mg/kg, q.d. Although adequate unbound drug levels were not achieved at this dose, the favorable in vitro ADMET results strongly support further work in this series.
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Affiliation(s)
- Jelena Konstantinović
- Faculty of Chemistry, University of Belgrade , Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Erkan Kiris
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute , Frederick, Maryland 21702, United States
| | - Krishna P Kota
- Molecular and Translational Sciences Division, United States Army Medical Research Institute of Infectious Diseases , 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Johanny Kugelman-Tonos
- Molecular and Translational Sciences Division, United States Army Medical Research Institute of Infectious Diseases , 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Milica Videnović
- Faculty of Chemistry Innovative Centre , Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Lisa H Cazares
- Molecular and Translational Sciences Division, United States Army Medical Research Institute of Infectious Diseases , 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Nataša Terzić Jovanović
- Institute of Chemistry, Technology, and Metallurgy, University of Belgrade , Njegoševa 12, 11000 Belgrade, Serbia
| | - Tatjana Ž Verbić
- Faculty of Chemistry, University of Belgrade , Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Boban Andjelković
- Faculty of Chemistry, University of Belgrade , Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Allen J Duplantier
- Molecular and Translational Sciences Division, United States Army Medical Research Institute of Infectious Diseases , 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Sina Bavari
- United States Army Medical Research Institute of Infectious Diseases , 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Bogdan A Šolaja
- Faculty of Chemistry, University of Belgrade , Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia.,Serbian Academy of Sciences and Arts , Knez Mihailova 35, 11158 Belgrade, Serbia
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11
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Song GP, Hu DK, Tian H, Li YS, Cao YS, Jin HW, Cui ZN. Synthesis and Larvicidal Activity of Novel Thenoylhydrazide Derivatives. Sci Rep 2016; 6:22977. [PMID: 26960713 PMCID: PMC4785375 DOI: 10.1038/srep22977] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 02/23/2016] [Indexed: 11/09/2022] Open
Abstract
A pair of chemical isomeric structures of novel N-tert-butylphenyl thenoylhydrazide compounds I and II were designed and synthesized. Their structures were characterized by MS, IR, 1H NMR, elemental analysis and X-ray single crystal diffraction. The regioselectivity of the Meerwein arylation reaction and the electrophilic substitution reaction of N-tert-butyl hydrazine were studied by density functional theory (DFT) quantum chemical method. The larvicidal tests revealed that some compounds I had excellent larvicidal activity against Culex pipiens pallens. As the candidates of insect growth regulators (IGRs), the larval growth inhibition and regulation against Culex pipiens pallens were examined for some compounds, especially I1 and I7. Compounds I1 and I7 were further indicated as an ecdysteroid agonist by reporter gene assay on the Spodoptera frugiperda cell line (Sf9 cells). Finally, a molecular docking study of compound I7 was conducted, which was not only beneficial to understand the structure-activity relationship, but also useful for development of new IGRs for the control of mosquitos.
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Affiliation(s)
- Gao-Peng Song
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China.,College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - De-Kun Hu
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
| | - Hao Tian
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
| | - Ya-Sheng Li
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
| | - Yun-Shen Cao
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
| | - Hong-Wei Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zi-Ning Cui
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
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12
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Ajdačić V, Senerovic L, Vranić M, Pekmezovic M, Arsic-Arsnijevic V, Veselinovic A, Veselinovic J, Šolaja BA, Nikodinovic-Runic J, Opsenica IM. Synthesis and evaluation of thiophene-based guanylhydrazones (iminoguanidines) efficient against panel of voriconazole-resistant fungal isolates. Bioorg Med Chem 2016; 24:1277-91. [PMID: 26867487 DOI: 10.1016/j.bmc.2016.01.058] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 01/21/2016] [Accepted: 01/29/2016] [Indexed: 12/31/2022]
Abstract
A series of new thiophene-based guanylhydrazones (iminoguanidines) were synthesized in high yields using a straightforward two-step procedure. The antifungal activity of compounds was evaluated against a wide range of medicaly important fungal strains including yeasts, molds, and dermatophytes in comparison to clinically used drug voriconazole. Cytotoxic properties of compounds were also determined using human lung fibroblast cell line and hemolysis assay. All guanylhydrazones showed significant activity against broad spectrum of clinically important species of Candida spp., Aspergillus fumigatus, Fusarium oxysporum, Microsporum canis and Trichophyton mentagrophytes, which was in some cases comparable or better than activity of voriconazole. More importantly, compounds 10, 11, 13, 14, 18 and 21 exhibited excellent activity against voriconazole-resistant Candida albicans CA5 with very low minimal inhibitory concentration (MIC) values <2 μg mL(-1). Derivative 14, bearing bromine on the phenyl ring, was the most effective compound with MICs ranging from 0.25 to 6.25 μg mL(-1). However, bis-guanylhydrazone 18 showed better selectivity in terms of therapeutic index values. In vivo embryotoxicity on zebrafish (Danio rerio) showed improved toxicity profile of 11, 14 and 18 in comparison to that of voriconazole. Most guanylhydrazones also inhibited C. albicans yeast to hyphal transition, essential for its biofilm formation, while 11 and 18 were able to disperse preformed Candida biofilms. All guanylhydrazones showed the equal potential to interact with genomic DNA of C. albicans in vitro, thus indicating a possible mechanism of their action, as well as possible mechanism of observed cytotoxic effects. Tested compounds did not have significant hemolytic effect and caused low liposome leakage, which excluded the cell membrane as a primary target. On the basis of computational docking experiments using both human and cytochrome P450 from Candida it was concluded that the most active guanylhydrazones had minimal structural prerequisites to interact with the cytochrome P450 14α-demethylase (CYP51). Promising guanylhydrazone derivatives also showed satisfactory pharmacokinetic profile based on molecular calculations.
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Affiliation(s)
- Vladimir Ajdačić
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, PO Box 51, 11158 Belgrade, Serbia
| | - Lidija Senerovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Marija Vranić
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, PO Box 51, 11158 Belgrade, Serbia
| | - Marina Pekmezovic
- National Reference Medical Mycology Laboratory, Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Valentina Arsic-Arsnijevic
- National Reference Medical Mycology Laboratory, Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | | | - Jovana Veselinovic
- Faculty of Medicine, Department of Chemistry, University of Niš, 18000 Niš, Serbia
| | - Bogdan A Šolaja
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, PO Box 51, 11158 Belgrade, Serbia
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia.
| | - Igor M Opsenica
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, PO Box 51, 11158 Belgrade, Serbia.
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13
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Kiris E, Nuss JE, Stanford SM, Wanner LM, Cazares L, Maestre MF, Du HT, Gomba GY, Burnett JC, Gussio R, Bottini N, Panchal RG, Kane CD, Tessarollo L, Bavari S. Phosphatase Inhibitors Function as Novel, Broad Spectrum Botulinum Neurotoxin Antagonists in Mouse and Human Embryonic Stem Cell-Derived Motor Neuron-Based Assays. PLoS One 2015; 10:e0129264. [PMID: 26061731 PMCID: PMC4462581 DOI: 10.1371/journal.pone.0129264] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/06/2015] [Indexed: 12/05/2022] Open
Abstract
There is an urgent need to develop novel treatments to counter Botulinum neurotoxin (BoNT) poisoning. Currently, the majority of BoNT drug development efforts focus on directly inhibiting the proteolytic components of BoNT, i.e. light chains (LC). Although this is a rational approach, previous research has shown that LCs are extremely difficult drug targets and that inhibiting multi-serotype BoNTs with a single LC inhibitor may not be feasible. An alternative approach would target neuronal pathways involved in intoxication/recovery, rather than the LC itself. Phosphorylation-related mechanisms have been implicated in the intoxication pathway(s) of BoNTs. However, the effects of phosphatase inhibitors upon BoNT activity in the physiological target of BoNTs, i.e. motor neurons, have not been investigated. In this study, a small library of phosphatase inhibitors was screened for BoNT antagonism in the context of mouse embryonic stem cell-derived motor neurons (ES-MNs). Four inhibitors were found to function as BoNT/A antagonists. Subsequently, we confirmed that these inhibitors protect against BoNT/A in a dose-dependent manner in human ES-MNs. Additionally, these compounds provide protection when administered in post-intoxication scenario. Importantly, the inhibitors were also effective against BoNT serotypes B and E. To the best of our knowledge, this is the first study showing phosphatase inhibitors as broad-spectrum BoNT antagonists.
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Affiliation(s)
- Erkan Kiris
- Geneva Foundation, Tacoma, WA, United States of America
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute (NCI), Frederick, MD, United States of America
| | - Jonathan E. Nuss
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - Stephanie M. Stanford
- Division of Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States of America
| | - Laura M. Wanner
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - Lisa Cazares
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - Michael F. Maestre
- Division of Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States of America
| | - Hao T. Du
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - Glenn Y. Gomba
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - James C. Burnett
- Leidos Biomedical Research, Inc., Computational Drug Development Group (CDDG), NCI, Frederick, MD, United States of America
- CDDG, Developmental Therapeutics Program, NCI, Frederick, MD, United States of America
| | - Rick Gussio
- CDDG, Developmental Therapeutics Program, NCI, Frederick, MD, United States of America
| | - Nunzio Bottini
- Division of Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States of America
| | - Rekha G. Panchal
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
| | - Christopher D. Kane
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
- Henry M. Jackson Foundation, Bethesda, MD, United States of America
- DoD Biotechnology High Performance Computing Software Applications Institute (BHSAI), Telemedicine and Advanced Technology Research Center (TATRC), US Army Medical Research and Materiel Command (USAMRMC), Frederick, MD, United States of America
| | - Lino Tessarollo
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute (NCI), Frederick, MD, United States of America
| | - Sina Bavari
- Department of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases, Frederick, MD, United States of America
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14
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Kota KP, Soloveva V, Wanner LM, Gomba G, Kiris E, Panchal RG, Kane CD, Bavari S. A high content imaging assay for identification of Botulinum neurotoxin inhibitors. J Vis Exp 2014:e51915. [PMID: 25489815 DOI: 10.3791/51915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Synaptosomal-associated protein-25 (SNAP-25) is a component of the soluble NSF attachment protein receptor (SNARE) complex that is essential for synaptic neurotransmitter release. Botulinum neurotoxin serotype A (BoNT/A) is a zinc metalloprotease that blocks exocytosis of neurotransmitter by cleaving the SNAP-25 component of the SNARE complex. Currently there are no licensed medicines to treat BoNT/A poisoning after internalization of the toxin by motor neurons. The development of effective therapeutic measures to counter BoNT/A intoxication has been limited, due in part to the lack of robust high-throughput assays for screening small molecule libraries. Here we describe a high content imaging (HCI) assay with utility for identification of BoNT/A inhibitors. Initial optimization efforts focused on improving the reproducibility of inter-plate results across multiple, independent experiments. Automation of immunostaining, image acquisition, and image analysis were found to increase assay consistency and minimize variability while enabling the multiparameter evaluation of experimental compounds in a murine motor neuron system.
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Affiliation(s)
- Krishna P Kota
- Perkin Elmer Inc.; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases;
| | - Veronica Soloveva
- Henry M. Jackson Foundation; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases; DoD Biotechnology High Performance Computing Software Applications Institute (BHSAI), Telemedicine and Advanced Technology Research Center (TATRC), US Army Medical Research and Materiel Command (USAMRMC)
| | - Laura M Wanner
- The Geneva Foundation; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases
| | - Glenn Gomba
- ORISE; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases
| | - Erkan Kiris
- The Geneva Foundation; Frederick National Laboratory for Cancer Research; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases
| | - Rekha G Panchal
- Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases
| | - Christopher D Kane
- Henry M. Jackson Foundation; Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases; DoD Biotechnology High Performance Computing Software Applications Institute (BHSAI), Telemedicine and Advanced Technology Research Center (TATRC), US Army Medical Research and Materiel Command (USAMRMC)
| | - Sina Bavari
- Division of Molecular and Translational Sciences, US Army Medical Research Institute of Infectious Diseases
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15
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Videnović M, Opsenica DM, Burnett J, Gomba L, Nuss JE, Selaković Ž, Konstantinović J, Krstić M, Šegan S, Zlatović M, Sciotti RJ, Bavari S, Šolaja BA. Second generation steroidal 4-aminoquinolines are potent, dual-target inhibitors of the botulinum neurotoxin serotype A metalloprotease and P. falciparum malaria. J Med Chem 2014; 57:4134-53. [PMID: 24742203 PMCID: PMC4032193 DOI: 10.1021/jm500033r] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Indexed: 01/25/2023]
Abstract
Significantly more potent second generation 4-amino-7-chloroquinoline (4,7-ACQ) based inhibitors of the botulinum neurotoxin serotype A (BoNT/A) light chain were synthesized. Introducing an amino group at the C(3) position of the cholate component markedly increased potency (IC50 values for such derivatives ranged from 0.81 to 2.27 μM). Two additional subclasses were prepared: bis(steroidal)-4,7-ACQ derivatives and bis(4,7-ACQ)cholate derivatives; both classes provided inhibitors with nanomolar-range potencies (e.g., the Ki of compound 67 is 0.10 μM). During BoNT/A challenge using primary neurons, select derivatives protected SNAP-25 by up to 89%. Docking simulations were performed to rationalize the compounds' in vitro potencies. In addition to specific residue contacts, coordination of the enzyme's catalytic zinc and expulsion of the enzyme's catalytic water were a consistent theme. With respect to antimalarial activity, the compounds provided better IC90 activities against chloroquine resistant (CQR) malaria than CQ, and seven compounds were more active than mefloquine against CQR strain W2.
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Affiliation(s)
- Milica Videnović
- Faculty
of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Dejan M. Opsenica
- Institute
of Chemistry, Technology, and Metallurgy, University of Belgrade, Njegoseva 12, 11000 Belgrade, Serbia
| | - James
C. Burnett
- Computational
Drug Development Group, Leidos Biomedical
Research, Inc., FNLCR at Frederick, P.O.
Box B, Frederick, Maryland 21701, United States
| | - Laura Gomba
- Department
of Bacteriology, United States Army Medical
Research Institute of Infectious Diseases, 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Jonathan E. Nuss
- Department
of Bacteriology, United States Army Medical
Research Institute of Infectious Diseases, 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Života Selaković
- Faculty
of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Jelena Konstantinović
- Faculty
of Chemistry Innovative Centre, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Maja Krstić
- Faculty
of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Sandra Šegan
- Institute
of Chemistry, Technology, and Metallurgy, University of Belgrade, Njegoseva 12, 11000 Belgrade, Serbia
| | - Mario Zlatović
- Faculty
of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Richard J. Sciotti
- Division
of Experimental Therapeutics, Walter Reed
Army Institute of Research, Silver
Spring, Maryland 20910, United States
| | - Sina Bavari
- Target
Discovery and Experimental Microbiology, United States Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Frederick, Maryland 21702, United States
| | - Bogdan A. Šolaja
- Faculty
of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
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16
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The synthesis and photoactivated cytotoxicity of novel 5-phenyl-3-(2,2′:5′,2″-terthien-5-yl)-4,5-dihydro-1H-pyrazolines. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2013.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Burtea A, Salzameda NT. Discovery and SAR study of a sulfonamide hydroxamic acid inhibitor for the botulinum neurotoxin serotype A light chain. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00053f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Through the use of chemical synthesis and high throughput screening, we discovered a sulfonamide hydroxamic acid inhibitor for the botulinum neurotoxin serotype A light chain. A structure activity relationship study of the parent inhibitor resulted in the synthesis of a new inhibitor with an IC50of 0.95 ± 0.60 μM for the BoNT/A LC.
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Affiliation(s)
- Alexander Burtea
- Department of Chemistry & Biochemistry
- California State University
- Fullerton, USA
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18
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Opsenica IM, Tot M, Gomba L, Nuss JE, Sciotti RJ, Bavari S, Burnett JC, Šolaja BA. 4-Amino-7-chloroquinolines: probing ligand efficiency provides botulinum neurotoxin serotype A light chain inhibitors with significant antiprotozoal activity. J Med Chem 2013; 56:5860-71. [PMID: 23815186 PMCID: PMC3880596 DOI: 10.1021/jm4006077] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structurally simplified analogues of dual antimalarial and botulinum neurotoxin serotype A light chain (BoNT/A LC) inhibitor bis-aminoquinoline (1) were prepared. New compounds were designed to improve ligand efficiency while maintaining or exceeding the inhibitory potency of 1. Three of the new compounds are more active than 1 against both indications. Metabolically, the new inhibitors are relatively stable and nontoxic. 12, 14, and 15 are more potent BoNT/A LC inhibitors than 1. Additionally, 15 has excellent in vitro antimalarial efficacy, with IC90 values ranging from 4.45 to 12.11 nM against five Plasmodium falciparum (P.f.) strains: W2, D6, C235, C2A, and C2B. The results indicate that the same level of inhibitory efficacy provided by 1 can be retained/exceeded with less structural complexity. 12, 14, and 15 provide new platforms for the development of more potent dual BoNT/A LC and P.f. inhibitors adhering to generally accepted chemical properties associated with the druggability of synthetic molecules.
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Affiliation(s)
- Igor M. Opsenica
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Mikloš Tot
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
| | - Laura Gomba
- United States Army Medical Research Institute of Infectious Diseases, Department of Bacteriology, 1425 Porter Street, Frederick, MD 21702, USA
| | - Jonathan E. Nuss
- United States Army Medical Research Institute of Infectious Diseases, Department of Bacteriology, 1425 Porter Street, Frederick, MD 21702, USA
| | - Richard J. Sciotti
- Division of Experimental Therapeutics, Walter Reed Army Institute of Research, Silver Spring, Maryland 20910, United States
| | - Sina Bavari
- Target Discovery and Experimental Microbiology, United States Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Frederick, MD 21702, USA
| | - James C. Burnett
- Computational Drug Development Group, SAIC-Frederick, Inc., FNLCR at Frederick, P.O. Box B, Frederick, Maryland, United States
| | - Bogdan A. Šolaja
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 51, 11158, Belgrade, Serbia
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19
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O'Malley S, Sareth S, Jiao GS, Kim S, Thai A, Cregar-Hernandez L, McKasson L, Margosiak SA, Johnson AT. Virtual medicinal chemistry: in silico pre-docking functional group transformation for discovery of novel inhibitors of botulinum toxin serotype A light chain. Bioorg Med Chem Lett 2013; 23:2505-11. [PMID: 23545109 DOI: 10.1016/j.bmcl.2013.03.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 03/01/2013] [Accepted: 03/07/2013] [Indexed: 10/27/2022]
Abstract
A novel method for applying high-throughput docking to challenging metalloenzyme targets is described. The method utilizes information-based virtual transformation of library carboxylates to hydroxamic acids prior to docking, followed by compound acquisition, one-pot (two steps) chemical synthesis and in vitro screening. In two experiments targeting the botulinum neurotoxin serotype A metalloprotease light chain, hit rates of 32% and 18% were observed.
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