201
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Alturiqi AS, Alaghaz ANM, Ammar RA. Synthesis, Spectral Characterization, Antitumor, Antioxidant, and Antimicrobial Studies of New Potential ONS Schiff Base Complexes. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amani S. Alturiqi
- Department of Chemistry, College of Science; Princess Nourah bint Abdul Rahman University; Saudi Arabia
- Deanship of Scientific Research; Princess Nourah bint Abdul Rahman University; Saudi Arabia
| | | | - Reda A. Ammar
- Department of Chemistry, College of Science; Al-Imam Mohammad Ibn Saud Islamic University; Riyadh Saudi Arabia
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202
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Novel ruthenium azo-quinoline complexes with enhanced photonuclease activity in human cancer cells. Eur J Med Chem 2017; 139:1016-1029. [DOI: 10.1016/j.ejmech.2017.08.059] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 08/21/2017] [Accepted: 08/25/2017] [Indexed: 02/07/2023]
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203
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Diomede L, Romeo M, Rognoni P, Beeg M, Foray C, Ghibaudi E, Palladini G, Cherny RA, Verga L, Capello GL, Perfetti V, Fiordaliso F, Merlini G, Salmona M. Cardiac Light Chain Amyloidosis: The Role of Metal Ions in Oxidative Stress and Mitochondrial Damage. Antioxid Redox Signal 2017; 27:567-582. [PMID: 28132512 PMCID: PMC5567464 DOI: 10.1089/ars.2016.6848] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS The knowledge of the mechanism underlying the cardiac damage in immunoglobulin light chain (LC) amyloidosis (AL) is essential to develop novel therapies and improve patients' outcome. Although an active role of reactive oxygen species (ROS) in LC-induced cardiotoxicity has already been envisaged, the actual mechanisms behind their generation remain elusive. This study was aimed at further dissecting the action of ROS generated by cardiotoxic LC in vivo and investigating whether transition metal ions are involved in this process. In the absence of reliable vertebrate model of AL, we used the nematode Caenorhabditis elegans, whose pharynx is an "ancestral heart." RESULTS LC purified from patients with severe cardiac involvement intrinsically generated high levels of ROS and when administered to C. elegans induced ROS production, activation of the DAF-16/forkhead transcription factor (FOXO) pathway, and expression of proteins involved in stress resistance and survival. Profound functional and structural ROS-mediated mitochondrial damage, similar to that observed in amyloid-affected hearts from AL patients, was observed. All these effects were entirely dependent on the presence of metal ions since addition of metal chelator or metal-binding 8-hydroxyquinoline compounds (chelex, PBT2, and clioquinol) permanently blocked the ROS production and prevented the cardiotoxic effects of amyloid LC. Innovation and Conclusion: Our findings identify the key role of metal ions in driving the ROS-mediated toxic effects of LC. This is a novel conceptual advance that paves the way for new pharmacological strategies aimed at not only counteracting but also totally inhibiting the vicious cycle of redox damage. Antioxid. Redox Signal. 27, 567-582.
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Affiliation(s)
- Luisa Diomede
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Margherita Romeo
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Paola Rognoni
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy
| | - Marten Beeg
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Claudia Foray
- 3 Bio-imaging Unit, Department of Cardiovascular Research, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Elena Ghibaudi
- 4 Department of Chemistry, University of Turin , Turin, Italy
| | - Giovanni Palladini
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy .,5 Department of Molecular Medicine, University of Pavia , Pavia, Italy
| | - Robert A Cherny
- 6 The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , Royal Pde, Parkville, Australia .,7 Prana Biotechnology Ltd. , Parkville, Australia
| | - Laura Verga
- 8 Pathologic Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Gian Luca Capello
- 8 Pathologic Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Vittorio Perfetti
- 9 Medical Oncology Unit, Foundation IRCCS Policlinico San Matteo , Pavia, Italy
| | - Fabio Fiordaliso
- 3 Bio-imaging Unit, Department of Cardiovascular Research, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
| | - Giampaolo Merlini
- 2 Amyloid Research and Treatment Center , Foundation IRCCS Policlinico San Matteo, Pavia, Italy .,5 Department of Molecular Medicine, University of Pavia , Pavia, Italy
| | - Mario Salmona
- 1 Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri ," Milan, Italy
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204
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Casado-Sánchez A, Martín-Santos C, Padrón JM, Mas-Ballesté R, Navarro-Ranninger C, Alemán J, Cabrera S. Effect of electronic and steric properties of 8-substituted quinolines in gold(III) complexes: Synthesis, electrochemistry, stability, interactions and antiproliferative studies. J Inorg Biochem 2017; 174:111-118. [DOI: 10.1016/j.jinorgbio.2017.06.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/22/2017] [Accepted: 06/13/2017] [Indexed: 11/30/2022]
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205
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Grasso G, Santoro AM, Lanza V, Sbardella D, Tundo GR, Ciaccio C, Marini S, Coletta M, Milardi D. The double faced role of copper in Aβ homeostasis: A survey on the interrelationship between metal dyshomeostasis, UPS functioning and autophagy in neurodegeneration. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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206
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Yousaf HH, Garrison AT, Abouelhassan Y, Basak A, Jones JB, III RWH. Identification of Nitroxoline and Halogenated Quinoline Analogues with Antibacterial Activities against Plant Pathogens. ChemistrySelect 2017. [DOI: 10.1002/slct.201701620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hussain H. Yousaf
- Department of Medicinal Chemistry; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville; FL
| | - Aaron T. Garrison
- Department of Medicinal Chemistry; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville; FL
| | - Yasmeen Abouelhassan
- Department of Medicinal Chemistry; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville; FL
| | - Akash Basak
- Department of Chemistry; University of Florida
| | | | - Robert W. Huigens III
- Department of Medicinal Chemistry; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville; FL
- Department of Chemistry; University of Florida
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207
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Intracellular zinc activates KCNQ channels by reducing their dependence on phosphatidylinositol 4,5-bisphosphate. Proc Natl Acad Sci U S A 2017; 114:E6410-E6419. [PMID: 28716904 DOI: 10.1073/pnas.1620598114] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
M-type (Kv7, KCNQ) potassium channels are proteins that control the excitability of neurons and muscle cells. Many physiological and pathological mechanisms of excitation operate via the suppression of M channel activity or expression. Conversely, pharmacological augmentation of M channel activity is a recognized strategy for the treatment of hyperexcitability disorders such as pain and epilepsy. However, physiological mechanisms resulting in M channel potentiation are rare. Here we report that intracellular free zinc directly and reversibly augments the activity of recombinant and native M channels. This effect is mechanistically distinct from the known redox-dependent KCNQ channel potentiation. Interestingly, the effect of zinc cannot be attributed to a single histidine- or cysteine-containing zinc-binding site within KCNQ channels. Instead, zinc dramatically reduces KCNQ channel dependence on its obligatory physiological activator, phosphatidylinositol 4,5-bisphosphate (PIP2). We hypothesize that zinc facilitates interactions of the lipid-facing interface of a KCNQ protein with the inner leaflet of the plasma membrane in a way similar to that promoted by PIP2 Because zinc is increasingly recognized as a ubiquitous intracellular second messenger, this discovery might represent a hitherto unknown native pathway of M channel modulation and provide a fresh strategy for the design of M channel activators for therapeutic purposes.
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208
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Bortolin M, Bidossi A, De Vecchi E, Avveniente M, Drago L. In vitro Antimicrobial Activity of Chlorquinaldol against Microorganisms Responsible for Skin and Soft Tissue Infections: Comparative Evaluation with Gentamicin and Fusidic Acid. Front Microbiol 2017. [PMID: 28642751 PMCID: PMC5462991 DOI: 10.3389/fmicb.2017.01039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Skin and soft tissue infections (SSTIs) are a major therapeutic challenge for clinicians. The emergence of pathogens with decreased susceptibility to available therapies has become an emerging problem often associated with treatment failure. Hence, there is an urgent need for novel broad-spectrum antimicrobial agents. The purpose of this study was to assess the feasibility of chlorquinaldol as an alternative approach to currently used topical antibiotics for the treatment of skin and soft tissue infections. The activity of chlorquinaldol was investigated against a collection of bacterial isolates responsible for skin infections, including strains resistant to fusidic acid and gentamicin. After determination of MIC and MBC, time-kill experiments were carried out by counting colonies grown after 0, 3, 6, 9, 24, and 48 h of incubation with concentrations equal to ¼×, ½×, 1×, 2×, and 4× MIC of chlorquinaldol, gentamicin, or fusidic acid. Staphylococci resulted the Gram-positives most sensitive to chlorquinaldol, with MIC-values ranging from 0.016 to 0.5 mg/L. A lower activity was observed against Gram-negative bacteria, with 77% of the isolates being inhibited at concentrations ranging from 128 to 512 mg/L. Generally, in time-kill studies, chlorquinaldol showed a bactericidal activity at the higher concentrations (2×, 4× MIC) after 24-48 h of incubation. In conclusion, chlorquinaldol may represent a valuable alternative to conventional topical antibiotics for the treatment of skin and soft tissue infections.
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Affiliation(s)
- Monica Bortolin
- Laboratory of Clinical Chemistry and Microbiology, IRCCS Galeazzi Orthopaedic InstituteMilan, Italy
| | - Alessandro Bidossi
- Laboratory of Clinical Chemistry and Microbiology, IRCCS Galeazzi Orthopaedic InstituteMilan, Italy
| | - Elena De Vecchi
- Laboratory of Clinical Chemistry and Microbiology, IRCCS Galeazzi Orthopaedic InstituteMilan, Italy
| | - Maura Avveniente
- Laboratory of Clinical Chemistry and Microbiology, IRCCS Galeazzi Orthopaedic InstituteMilan, Italy
| | - Lorenzo Drago
- Laboratory of Clinical Chemistry and Microbiology, IRCCS Galeazzi Orthopaedic InstituteMilan, Italy.,Laboratory of Clinical Microbiology, Department of Biomedical Sciences for Health, University of MilanMilan, Italy
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209
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Männel B, Dengler D, Shonberg J, Hübner H, Möller D, Gmeiner P. Hydroxy-Substituted Heteroarylpiperazines: Novel Scaffolds for β-Arrestin-Biased D2R Agonists. J Med Chem 2017; 60:4693-4713. [DOI: 10.1021/acs.jmedchem.7b00363] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Barbara Männel
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Daniela Dengler
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Jeremy Shonberg
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Harald Hübner
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Dorothee Möller
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Peter Gmeiner
- Department of Chemistry and
Pharmacy, Medicinal Chemistry, Friedrich-Alexander University Erlangen-Nuernberg, Schuhstraße 19, 91052 Erlangen, Germany
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210
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Swain SS, Paidesetty SK, Padhy RN. Antibacterial activity, computational analysis and host toxicity study of thymol-sulfonamide conjugates. Biomed Pharmacother 2017; 88:181-193. [DOI: 10.1016/j.biopha.2017.01.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 02/07/2023] Open
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211
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Gayathri K, Radhika R, Shankar R, Malathi M, Savithiri K, Sparkes HA, Howard JA, Mohan PS. Comparative theoretical and experimental study on novel tri-quinoline system and its anticancer studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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212
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Li Q, Yang H, Chen Y, Sun H. Recent progress in the identification of selective butyrylcholinesterase inhibitors for Alzheimer's disease. Eur J Med Chem 2017; 132:294-309. [PMID: 28371641 DOI: 10.1016/j.ejmech.2017.03.062] [Citation(s) in RCA: 216] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 03/13/2017] [Accepted: 03/25/2017] [Indexed: 12/25/2022]
Abstract
Alzheimer's disease (AD) is one of the most prevalent neurodegenerative disorders with notable factor of dysfunction in cholinergic system. Low ACh level can be observed in the pathogenesis of AD. Several AChE inhibitors have already been used for clinical treatments. However, other than normal conditions, ACh is mostly hydrolyzed by BuChE in progressed AD. Account for an increased level of BuChE and decreased level of AChE in the late stage of AD, development of selective BuChE inhibitor is of vital importance. Up till now, compounds with various scaffolds have been discovered to selectively inhibit BuChE. Different effective anti-BuChE molecules are concluded in this review.
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Affiliation(s)
- Qi Li
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Hongyu Yang
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Haopeng Sun
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China.
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213
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Effect of metal chelators on the aggregation of beta-amyloid peptides in the presence of copper and iron. Biometals 2017; 30:285-293. [PMID: 28281098 DOI: 10.1007/s10534-017-0005-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 02/21/2017] [Indexed: 10/20/2022]
Abstract
Amyloid β (Aβ) fibrils and amorphous aggregates are found in the brain of patients with Alzheimer's disease (AD), and are implicated in the etiology of AD. The metal imbalance is also among leading causes of AD, owing to the fact that Aβ aggregation takes place in the synaptic cleft where Aβ, Cu(II) and Fe(III) are found in abnormally high concentrations. Aβ40 and Aβ42 are the main components of plaques found in afflicted brains. Coordination of Cu(II) and Fe(III) ions to Aβ peptides have been linked to Aβ aggregation and production of reactive oxygen species, two key events in the development of AD pathology. Metal chelation was proposed as a therapy for AD on the basis that it might prevent Aβ aggregation. In this work, we first examined the formation of Aβ40 and Aβ42 aggregates in the presence of metal ions, i.e. Fe(III) and Cu(II), which were detected by fluorescence spectroscopy and atomic force microscopy. Second, we studied the ability of the two chelators, ethylenediaminetetraacetic acid and 5-chloro-7-iodo-8-hydroxyquinoline (clioquinol), to investigate their effect on the availability of these metal ions to interact with Aβ and thereby their effect on Aβ accumulation. Our findings show that Fe(III), but not Cu(II), promote aggregation of both Aβ40 and Aβ42. We also found that only clioquinol decreased significantly iron ion-induced aggregation of Aβ42. The presence of ions and/or chelators also affected the morphology of Aβ aggregates.
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214
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Perez C, Li J, Parlati F, Rouffet M, Ma Y, Zhou HJ, Mackinnon AL, Chou TF, Deshaies RJ, Cohen SM. Discovery of an Inhibitor of the Proteasome Subunit Rpn11. J Med Chem 2017; 60:1343-1361. [PMID: 28191850 PMCID: PMC5761724 DOI: 10.1021/acs.jmedchem.6b01379] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The proteasome plays a crucial role in degradation of normal proteins that happen to be constitutively or inducibly unstable, and in this capacity it plays a regulatory role. Additionally, it degrades abnormal/damaged/mutant/misfolded proteins, which serves a quality-control function. Inhibitors of the proteasome have been validated in the treatment of multiple myeloma, with several FDA-approved therapeutics. Rpn11 is a Zn2+-dependent metalloisopeptidase that hydrolyzes ubiquitin from tagged proteins that are trafficked to the proteasome for degradation. A fragment-based drug discovery (FBDD) approach was utilized to identify fragments with activity against Rpn11. Screening of a library of metal-binding pharmacophores (MBPs) revealed that 8-thioquinoline (8TQ, IC50 value ∼2.5 μM) displayed strong inhibition of Rpn11. Further synthetic elaboration of 8TQ yielded a small molecule compound (35, IC50 value ∼400 nM) that is a potent and selective inhibitor of Rpn11 that blocks proliferation of tumor cells in culture.
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Affiliation(s)
- Christian Perez
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla CA 92093
| | - Jing Li
- Division of Biology and Biological Engineering, Box 114-96, Pasadena CA 91107
| | - Frank Parlati
- Division of Biology and Biological Engineering, Box 114-96, Pasadena CA 91107
| | - Matthieu Rouffet
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla CA 92093
| | - Yuyong Ma
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla CA 92093
| | - Han-Jie Zhou
- Howard Hughes Medical Institute, California Institute of Technology, Cleave BioSciences, Inc. 866 Malcom Rd. #100 Burlingame, CA 94010
| | - Andrew L. Mackinnon
- Division of Biology and Biological Engineering, Box 114-96, Pasadena CA 91107
| | - Tsui-Fen Chou
- Division of Biology and Biological Engineering, Box 114-96, Pasadena CA 91107
| | - Raymond J. Deshaies
- Division of Biology and Biological Engineering, Box 114-96, Pasadena CA 91107
| | - Seth M. Cohen
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla CA 92093
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215
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Turner AG, Ong CLY, Walker MJ, Djoko KY, McEwan AG. Transition Metal Homeostasis in Streptococcus pyogenes and Streptococcus pneumoniae. Adv Microb Physiol 2017; 70:123-191. [PMID: 28528647 DOI: 10.1016/bs.ampbs.2017.01.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Trace metals such as Fe, Mn, Zn and Cu are essential for various biological functions including proper innate immune function. The host immune system has complicated and coordinated mechanisms in place to either starve and/or overload invading pathogens with various metals to combat the infection. Here, we discuss the roles of Fe, Mn and Zn in terms of nutritional immunity, and also the roles of Cu and Zn in metal overload in relation to the physiology and pathogenesis of two human streptococcal species, Streptococcus pneumoniae and Streptococcus pyogenes. S. pneumoniae is a major human pathogen that is carried asymptomatically in the nasopharynx by up to 70% of the population; however, transition to internal sites can cause a range of diseases such as pneumonia, otitis media, meningitis and bacteraemia. S. pyogenes is a human pathogen responsible for diseases ranging from pharyngitis and impetigo, to severe invasive infections. Both species have overlapping capacity with respect to metal acquisition, export and regulation and how metal homeostasis relates to their virulence and ability to invade and survive within the host. It is becoming more apparent that metals have an important role to play in the control of infection, and with further investigations, it could lead to the potential use of metals in novel antimicrobial therapies.
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Affiliation(s)
- Andrew G Turner
- School of Chemistry and Molecular Biosciences and Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Cheryl-Lynn Y Ong
- School of Chemistry and Molecular Biosciences and Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Mark J Walker
- School of Chemistry and Molecular Biosciences and Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Karrera Y Djoko
- School of Chemistry and Molecular Biosciences and Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Alastair G McEwan
- School of Chemistry and Molecular Biosciences and Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.
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216
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Abstract
Natural products harbor unique and complex structures that provide valuable antibiotic scaffolds. With an increase in antibiotic resistance, natural products once again hold promise for new antimicrobial therapies, especially those with unique scaffolds that have been overlooked due to a lack of understanding of how they function. Dithiolopyrrolones (DTPs) are an underexplored class of disulfide-containing natural products, which exhibit potent antimicrobial activities against multidrug-resistant pathogens. DTPs were thought to target RNA polymerase, but conflicting observations leave the mechanisms elusive. Using a chemical genomics screen in Escherichia coli, we uncover a mode of action for DTPs-the disruption of metal homeostasis. We show that holomycin, a prototypical DTP, is reductively activated, and reduced holomycin chelates zinc with high affinity. Examination of reduced holomycin against zinc-dependent metalloenzymes revealed that it inhibits E. coli class II fructose bisphosphate aldolase, but not RNA polymerase. Reduced holomycin also strongly inhibits metallo-β-lactamases in vitro, major contributors to clinical carbapenem resistance, by removing active site zinc. These results indicate that holomycin is an intracellular metal-chelating antibiotic that inhibits a subset of metalloenzymes and that RNA polymerase is unlikely to be the primary target. Our work establishes a link between the chemical structures of DTPs and their antimicrobial action; the ene-dithiol group of DTPs enables high-affinity metal binding as a central mechanism to inhibit metabolic processes. Our study also validates the use of chemical genomics in characterizing modes of actions of antibiotics and emphasizes the potential of metal-chelating natural products in antimicrobial therapy.
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217
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Majidian M, Raoof JB, Hosseini SR, Ojani R. Determination of copper ion by square wave anodic stripping voltammetry at antimony trioxide-modified carbon nanotube paste electrode. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1077-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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218
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Therapeutic Approaches to Prion Diseases. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 150:433-453. [DOI: 10.1016/bs.pmbts.2017.06.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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219
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Deka B, Sarkar T, Banerjee S, Kumar A, Mukherjee S, Deka S, Saikia KK, Hussain A. Novel mitochondria targeted copper(ii) complexes of ferrocenyl terpyridine and anticancer active 8-hydroxyquinolines showing remarkable cytotoxicity, DNA and protein binding affinity. Dalton Trans 2017; 46:396-409. [DOI: 10.1039/c6dt03660k] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mixed-ligand ferrocenyl copper(ii) complexes target the mitochondria of cancer cells showing remarkable cytotoxicity against HeLa and MCF-7 cancer cells while being much less toxic to MCF-10A normal cells.
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Affiliation(s)
- Banashree Deka
- Department of Chemistry
- Handique Girls’ College
- Guwahati 781001
- India
| | - Tukki Sarkar
- Department of Chemistry
- Handique Girls’ College
- Guwahati 781001
- India
| | - Samya Banerjee
- Department of Chemistry
- Johns Hopkins University
- Baltimore
- USA
| | - Arun Kumar
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
| | - Sanjoy Mukherjee
- School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - Sasanka Deka
- Department of Chemistry
- University of Delhi
- New Delhi 110007
- India
| | - Kandarpa K. Saikia
- Department of Bioengineering and Technology
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - Akhtar Hussain
- Department of Chemistry
- Handique Girls’ College
- Guwahati 781001
- India
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220
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Skrivanova E, Van Immerseel F, Hovorkova P, Kokoska L. In Vitro Selective Growth-Inhibitory Effect of 8-Hydroxyquinoline on Clostridium perfringens versus Bifidobacteria in a Medium Containing Chicken Ileal Digesta. PLoS One 2016; 11:e0167638. [PMID: 27936245 PMCID: PMC5147926 DOI: 10.1371/journal.pone.0167638] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/17/2016] [Indexed: 12/27/2022] Open
Abstract
Clostridium perfringens-induced necrotic enteritis is generally controlled by antibiotics. However, because of increasing antibiotic resistance, other antibacterial agents are required, preferably ones that do not affect the beneficial intestinal microbiota of the host. This study evaluated the in vitro selective growth-inhibitory effect of 8-hydroxyquinoline (8HQ) on C. perfringens vs. bifidobacteria in a medium containing chicken ileal digesta. Prior to the experiments, the minimum inhibitory concentrations of 8HQ and penicillin G were determined by broth microdilution assay. The minimum inhibitory concentration values of 8HQ for C. perfringens were 16-32 times lower than the values for bifidobacteria. Treatment of autoclaved and non-autoclaved chicken ileal digesta with 8HQ showed a selective anticlostridial effect. After incubation of C. perfringens with autoclaved ileal digesta for 3 h, all 8HQ concentrations tested (32-2048 μg/mL) significantly reduced C. perfringens bacterial count. In contrast, the same treatment had no or only a slight effect on bifidobacteria counts. Unlike 8HQ, penicillin G did not exhibit any selectivity. Similar results were obtained after incubation for 24 h. In non-autoclaved ileal digesta, all 8HQ concentrations tested significantly reduced C. perfringens bacterial counts after incubation for 30 min and 3 h, while no effect was observed on bifidobacteria. These results suggest that 8HQ may serve as a prospective veterinary compound for use against necrotic enteritis in poultry.
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Affiliation(s)
- Eva Skrivanova
- Department of Physiology of Nutrition and Quality of Animal Products, Institute of Animal Science, Prague, Czech Republic
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Poultry Diseases, Ghent University, Merelbeke, Belgium
| | - Petra Hovorkova
- Department of Physiology of Nutrition and Quality of Animal Products, Institute of Animal Science, Prague, Czech Republic
- Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
| | - Ladislav Kokoska
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
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Mansouri-Torshizi H, Rezaei E, Kamranfar F, Heidari Majd M. Investigating the Apoptosis Ability of Ethylenediamine 8-Hydroxyquinolinato Palladium (II) Complex. Adv Pharm Bull 2016; 6:449-453. [PMID: 27766230 DOI: 10.15171/apb.2016.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 06/19/2016] [Accepted: 08/28/2016] [Indexed: 01/02/2023] Open
Abstract
Purpose: High solubility, low renal toxicity and apoptosis-inducing ability of palladium complexes are the reasons for their synthesis. Methods: In vitro cytotoxic study of previously synthesized [Pd(en)(8HQ)]NO3 , was carried out on breast cancer MCF-7 cell lines and prostate cancer DU145 cell lines. DNA fragmentation indicative of apoptotic was also evaluated by TUNEL assay on DU145 cell line. Results: FT-IR spectra of final complex confirmed the existence of chelating ligands. The DU145 cells unlike the MCF-7 cells, demonstrated the significant influence of the Pd (II) complex. The IC50 values of [Pd(en)(8HQ)]NO3 and cisplatin on DU145 cells were 27 and 8.3 μM, respectively. Moreover, nearly 38% apoptosis was evident in DU145 cells after treatment with [Pd(en)(8HQ)]NO3. Conclusion: [Pd(en)(8HQ)]NO3 has great potential in DNA binding and induction of apoptosis; thus it can be used in the future against prostate cancer.
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Affiliation(s)
| | - Elham Rezaei
- Student Research Committee, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Farzaneh Kamranfar
- Student Research Committee, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
| | - Mostafa Heidari Majd
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
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Indole-3-acetic acid in plant-pathogen interactions: a key molecule for in planta bacterial virulence and fitness. Res Microbiol 2016; 167:774-787. [PMID: 27637152 DOI: 10.1016/j.resmic.2016.09.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 07/06/2016] [Accepted: 09/01/2016] [Indexed: 11/22/2022]
Abstract
The plant pathogenic bacterium Pseudomonas savastanoi, the causal agent of olive and oleander knot disease, uses the so-called "indole-3-acetamide pathway" to convert tryptophan to indole-3-acetic acid (IAA) via a two-step pathway catalyzed by enzymes encoded by the genes in the iaaM/iaaH operon. Moreover, pathovar nerii of P. savastanoi is able to conjugate IAA to lysine to generate the less biologically active compound IAA-Lys via the enzyme IAA-lysine synthase encoded by the iaaL gene. Interestingly, iaaL is now known to be widespread in many Pseudomonas syringae pathovars, even in the absence of the iaaM and iaaH genes for IAA biosynthesis. Here, two knockout mutants, ΔiaaL and ΔiaaM, of strain Psn23 of P. savastanoi pv. nerii were produced. Pathogenicity tests using the host plant Nerium oleander showed that ΔiaaL and ΔiaaM were hypervirulent and hypovirulent, respectively and these features appeared to be related to their differential production of free IAA. Using the Phenotype Microarray approach, the chemical sensitivity of these mutants was shown to be comparable to that of wild-type Psn23. The main exception was 8 hydroxyquinoline, a toxic compound that is naturally present in plant exudates and is used as a biocide, which severely impaired the growth of ΔiaaL and ΔiaaM, as well as growth of the non-pathogenic mutant ΔhrpA, which lacks a functional Type Three Secretion System (TTSS). According to bioinformatics analysis of the Psn23 genome, a gene encoding a putative Multidrug and Toxic compound Extrusion (MATE) transporter, was found upstream of iaaL. Similarly to iaaL and iaaM, its expression appeared to be TTSS-dependent. Moreover, auxin-responsive elements were identified for the first time in the modular promoters of both the iaaL gene and the iaaM/iaaH operon of P. savastanoi, suggesting their IAA-inducible transcription. Gene expression analysis of several genes related to TTSS, IAA metabolism and drug resistance confirmed the presence of a concerted regulatory network in this phytopathogen among virulence, fitness and drug efflux.
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224
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8-Hydroxyquinolines in medicinal chemistry: A structural perspective. Eur J Med Chem 2016; 120:252-74. [DOI: 10.1016/j.ejmech.2016.05.007] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 01/12/2023]
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Suwanjang W, Prachayasittikul S, Prachayasittikul V. Effect of 8-hydroxyquinoline and derivatives on human neuroblastoma SH-SY5Y cells under high glucose. PeerJ 2016; 4:e2389. [PMID: 27635352 PMCID: PMC5012261 DOI: 10.7717/peerj.2389] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 07/29/2016] [Indexed: 12/21/2022] Open
Abstract
8-Hydroxyquinoline and derivatives exhibit multifunctional properties, including antioxidant, antineurodegenerative, anticancer, anti-inflammatory and antidiabetic activities. In biological systems, elevation of intracellular calcium can cause calpain activation, leading to cell death. Here, the effect of 8-hydroxyquinoline and derivatives (5-chloro-7-iodo-8-hydroxyquinoline or clioquinol and 8-hydroxy-5-nitroquinoline or nitroxoline) on calpain-dependent (calpain-calpastatin) pathways in human neuroblastoma (SH-SY5Y) cells was investigated. 8-Hydroxyquinoline and derivatives ameliorated high glucose toxicity in SH-SY5Y cells. The investigated compounds, particularly clioquinol, attenuated the increased expression of calpain, even under high-glucose conditions. 8-Hydroxyquinoline and derivatives thus adversely affected the promotion of neuronal cell death by high glucose via the calpain-calpastatin signaling pathways. These findings support the beneficial effects of 8-hydroxyquinolines for further therapeutic development.
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Affiliation(s)
- Wilasinee Suwanjang
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University , Bangkok , Thailand
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University , Bangkok , Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University , Bangkok , Thailand
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226
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Sun Cao P, Sommer RD, Grice KA. Structural comparison of suberanilohydroxamic acid (SAHA) and other zinc-enzyme inhibitors bound to a monomeric zinc species. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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227
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Wu X, Peters BJ, Rithner CD, Crans DC. Multinuclear NMR studies of aqueous vanadium–HEDTA complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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228
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In vitro antifungal and antibiofilm activities of halogenated quinoline analogues against Candida albicans and Cryptococcus neoformans. Int J Antimicrob Agents 2016; 48:208-11. [DOI: 10.1016/j.ijantimicag.2016.04.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/08/2016] [Accepted: 04/16/2016] [Indexed: 11/18/2022]
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229
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Garrison AT, Abouelhassan Y, Yang H, Yousaf HH, Nguyen TJ, Huigens Iii RW. Microwave-enhanced Friedländer synthesis for the rapid assembly of halogenated quinolines with antibacterial and biofilm eradication activities against drug resistant and tolerant bacteria. MEDCHEMCOMM 2016; 8:720-724. [PMID: 30108790 DOI: 10.1039/c6md00381h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 07/25/2016] [Indexed: 11/21/2022]
Abstract
Herein, we disclose the development of a catalyst- and protecting-group-free microwave-enhanced Friedländer synthesis which permits the single-step, convergent assembly of diverse 8-hydroxyquinolines with greatly improved reaction yields over traditional oil bath heating (increased from 34% to 72%). This rapid synthesis permitted the discovery of novel biofilm-eradicating halogenated quinolines (MBECs = 1.0-23.5 μM) active against MRSA, MRSE, and VRE. These small molecules exhibit activity through mechanisms independent of membrane lysis, further demonstrating their potential as a clinically useful treatment option against persistent biofilm-associated infections.
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Affiliation(s)
- Aaron T Garrison
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
| | - Yasmeen Abouelhassan
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
| | - Hongfen Yang
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
| | - Hussain H Yousaf
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
| | - Tho J Nguyen
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
| | - Robert W Huigens Iii
- Department of Medicinal Chemistry , Center for Natural Products Drug Discovery and Development (CNPD3) , University of Florida , Gainesville , Florida 32610 , USA . ; Tel: +1 352 273 7718
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Robinson SG, Burns PT, Miceli AM, Grice KA, Karver CE, Jin L. Calorimetric studies of the interactions of metalloenzyme active site mimetics with zinc-binding inhibitors. Dalton Trans 2016; 45:11817-29. [PMID: 27373714 DOI: 10.1039/c6dt01675h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The binding of drugs to metalloenzymes is an intricate process that involves several interactions, including binding of the drug to the enzyme active site metal, as well as multiple interactions between the drug and the enzyme residues. In order to determine the free energy contribution of Zn(2+) binding by known metalloenzyme inhibitors without the other interactions, valid active site zinc structural mimetics must be formed and binding studies need to be performed in biologically relevant conditions. The potential of each of five ligands to form a structural mimetic with Zn(2+) was investigated in buffer using Isothermal Titration Calorimetry (ITC). All five ligands formed strong 1 : 1 (ligand : Zn(2+)) binary complexes. The complexes were used in further ITC experiments to study their interaction with 8-hydroxyquinoline (8-HQ) and/or acetohydroxamic acid (AHA), two bidentate anionic zinc-chelating enzyme inhibitors. It was found that tetradentate ligands were not suitable for creating zinc structural mimetics for inhibitor binding in solution due to insufficient coordination sites remaining on Zn(2+). A stable binary complex, [Zn(BPA)](2+), which was formed by a tridentate ligand, bis(2-pyridylmethyl)amine (BPA), was found to bind one AHA in buffer or a methanol : buffer mixture (60 : 40 by volume) at pH 7.25 or one 8-HQ in the methanol : buffer mixture at pH 6.80, making it an effective structural mimetic for the active site of zinc metalloenzymes. These results are consistent with the observation that metalloenzyme active site zinc ions have three residues coordinated to them, leaving one or two sites open for inhibitors to bind. Our findings indicate that Zn(BPA)X2 can be used as an active site structural mimetic for zinc metalloenzymes for estimating the free energy contribution of zinc binding to the overall inhibitor active site interactions. Such use will help aid in the rational design of inhibitors to a variety of zinc metalloenzymes.
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Affiliation(s)
- Sophia G Robinson
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
| | - Philip T Burns
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
| | - Amanda M Miceli
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
| | - Kyle A Grice
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
| | - Caitlin E Karver
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
| | - Lihua Jin
- Department of Chemistry, DePaul University, 1110 W. Belden Ave, Suite 100, Chicago, IL 60614, USA.
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Duarte MC, Lage LMDR, Lage DP, Martins VT, Carvalho AMRS, Roatt BM, Menezes-Souza D, Tavares CAP, Alves RJ, Barichello JM, Coelho EAF. Treatment of murine visceral leishmaniasis using an 8-hydroxyquinoline-containing polymeric micelle system. Parasitol Int 2016; 65:728-736. [PMID: 27425599 DOI: 10.1016/j.parint.2016.07.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/08/2016] [Accepted: 07/13/2016] [Indexed: 01/09/2023]
Abstract
New therapeutics are urgently needed to treat visceral leishmaniasis (VL). Due to the fact that drug discovery is a long and expensive process, the development of delivery systems to carry old and toxic drugs could be considered, as well as the evaluation of new molecules that have already shown to present biological activity. In this context, the present study evaluated the in vitro and in vivo antileishmanial activity of an 8-hydroxyquinoline (8-HQN)-containing polymeric micelle (8-HQN/M) system against Leishmania infantum, the main causative agent of VL in the Americas. The experimental strategy used was based on the evaluation of the parasite load by a limiting-dilution technique in the spleen, liver, bone marrow and draining lymph nodes of the infected and treated animals, as well as by a quantitative PCR (qPCR) technique to also assess the splenic parasite load. The immune response developed was evaluated by the production of IFN-γ, IL-4, IL-10, IL-12 and GM-CSF cytokines, as well as by antileishmanial nitrite dosage and antibodies production. Hepatic and renal enzymes were also investigated to verify cellular injury as a result of treatments toxicity. In the results, 8-HQN/M-treated mice, when compared to the other groups: saline, free amphotericin B (AmpB, as a drug control), 8-HQN and B-8-HQN/M (as a micelle control) showed more significant reductions in their parasite burden in all evaluated organs. These animals also showed an antileishmanial Th1 immunity, which was represented by high levels of IFN-γ, IL-12, GM-CSF and nitrite, associated with a low production of IL-4 and IL-10 and anti-Leishmania IgG1 isotype antibodies. In addition, any hepatic or renal damage was found in these treated animals. In conclusion, 8-HQN/M was effective in treating L. infantum-infected BALB/c mice, and can be considered alone, or combined with other drugs, as an alternative treatment for VL.
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Affiliation(s)
- Mariana Costa Duarte
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Letícia Martins Dos Reis Lage
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Daniela Pagliara Lage
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Vívian Tamietti Martins
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | | | - Bruno Mendes Roatt
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Daniel Menezes-Souza
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Carlos Alberto Pereira Tavares
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Ricardo José Alves
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - José Mário Barichello
- Departamento de Farmácia, Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto 35400-000, Minas Gerais, Brazil; Laboratório de Tecnologia Farmacêutica, Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas. Campus Capão do Leão, S/N, 96900-010 Pelotas, RS, Brazil
| | - Eduardo Antonio Ferraz Coelho
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte 30130-100, Minas Gerais, Brazil.
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Lage LMDR, Barichello JM, Lage DP, Mendonça DVC, Carvalho AMRS, Rodrigues MR, Menezes-Souza D, Roatt BM, Alves RJ, Tavares CAP, Coelho EAF, Duarte MC. An 8-hydroxyquinoline-containing polymeric micelle system is effective for the treatment of murine tegumentary leishmaniasis. Parasitol Res 2016; 115:4083-4095. [PMID: 27365053 DOI: 10.1007/s00436-016-5181-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/23/2016] [Indexed: 10/21/2022]
Abstract
The current treatment of leishmaniasis has been hampered due to the high toxicity of the available drugs and long duration protocols, which often lead to its abandonment. In the present study, a poloxamer 407-based delivery system was developed, and a molecule, 8-hydroxyquinoline (8-HQN), was incorporated with it, leading to an 8-HQN/micelle (8-HQN/M) composition. Assays were performed to evaluate the in vitro antileishmanial activity of 8-HQN/M against Leishmania amazonensis stationary promastigotes. The cytotoxicity in murine macrophages and in human red cells, as well as the efficacy of the treatment in macrophages infected by parasites, was also assessed. This product was also evaluated for the treatment of murine tegumentary leishmaniasis, using L. amazonensis-infected BALB/c mice. To evaluate the in vivo efficacy of the treatment, the average lesion diameter (area) in the infected tissue, as well as the parasite load at the site of infection (skin), spleen, liver and draining lymph nodes were examined. Non-incorporated micelle (B-8-HQN/M) and the free molecule (8-HQN) were used as controls, besides animals that received only saline. The parasite burden was evaluated by limiting dilution and quantitative real-time PCR (qPCR) techniques, and immunological parameters associated with the treatments were also investigated. In the results, the 8-HQN/M group, when compared to the others, presented more significant reductions in the average lesion diameter and in the parasite burden in the skin and all evaluated organs. These animals also showed significantly higher levels of parasite-specific IFN-γ, IL-12, and GM-CSF, associated with low levels of IL-4 and IL-10, when compared to the saline, 8-HQN/M, and B-8-HQN groups. A predominant IL-12-driven IFN-γ production, against parasite proteins, mainly produced by CD4+ T cells, was observed in the treated animals, post-infection. In conclusion, 8-HQN/M was highly effective in treating L. amazonensis-infected BALB/c mice and can be considered alone, or combined with other drugs, as an alternative treatment for tegumentary leishmaniasis. Graphical Abstract Therapeutic scheme and immunological and parasitological parameters developed in the present study.
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Affiliation(s)
- Letícia Martins Dos Reis Lage
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - José Mário Barichello
- Departamento de Farmácia, Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, 35400-000, Minas Gerais, Brazil.,Laboratório de Tecnologia Farmacêutica. Centro de Ciências Químicas, Farmacêuticas e de Alimentos. Universidade Federal de Pelotas. Campus Capão do Leão, S/N, 96900-010, Pelotas, RS, Brazil
| | - Daniela Pagliara Lage
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, Minas Gerais, Brazil
| | - Débora Vasconcelos Costa Mendonça
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, Minas Gerais, Brazil
| | | | - Marcella Rezende Rodrigues
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - Daniel Menezes-Souza
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil.,Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, Minas Gerais, Brazil
| | - Bruno Mendes Roatt
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - Ricardo José Alves
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - Carlos Alberto Pereira Tavares
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil
| | - Eduardo Antonio Ferraz Coelho
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil. .,Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, Minas Gerais, Brazil.
| | - Mariana Costa Duarte
- Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Minas Gerais, Brazil.,Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, Minas Gerais, Brazil
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Basak A, Abouelhassan Y, Norwood VM, Bai F, Nguyen MT, Jin S, Huigens RW. Synthetically Tuning the 2-Position of Halogenated Quinolines: Optimizing Antibacterial and Biofilm Eradication Activities via Alkylation and Reductive Amination Pathways. Chemistry 2016; 22:9181-9. [PMID: 27245927 DOI: 10.1002/chem.201600926] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Indexed: 01/25/2023]
Abstract
Agents capable of eradicating bacterial biofilms are of great importance to human health as biofilm-associated infections are tolerant to our current antibiotic therapies. We have recently discovered that halogenated quinoline (HQ) small molecules are: 1) capable of eradicating methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant Staphylococcus epidermidis (MRSE) and vancomycin-resistant Enterococcus faecium (VRE) biofilms, and 2) synthetic tuning of the 2-position of the HQ scaffold has a significant impact on antibacterial and antibiofilm activities. Here, we report the chemical synthesis and biological evaluation of 39 HQ analogues that have a high degree of structural diversity at the 2-position. We identified diverse analogues that are alkylated and aminated at the 2-position of the HQ scaffold and demonstrate potent antibacterial (MIC≤0.39 μm) and biofilm eradication (MBEC 1.0-93.8 μm) activities against drug-resistant Staphylococcus aureus, Staphylococcus epidermidis and Enterococcus faecium strains while demonstrating <5 % haemolysis activity against human red blood cells (RBCs) at 200 μm. In addition, these HQs demonstrated low cytotoxicity against HeLa cells. Halogenated quinolines are a promising class of antibiofilm agents against Gram-positive pathogens that could lead to useful treatments against persistent bacterial infections.
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Affiliation(s)
- Akash Basak
- Department of Chemistry, University of Florida, 1600 SW Archer Road, Gainesville, FL, 32610, USA
| | - Yasmeen Abouelhassan
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA
| | - Verrill M Norwood
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA
| | - Fang Bai
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, 32610, USA
| | - Minh Thu Nguyen
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA
| | - Shouguang Jin
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, 32610, USA
| | - Robert W Huigens
- Department of Chemistry, University of Florida, 1600 SW Archer Road, Gainesville, FL, 32610, USA. .,Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, 1345 Center Drive, Gainesville, FL, 32610, USA.
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234
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Turnaturi R, Oliveri V, Vecchio G. Biotin-8-hydroxyquinoline conjugates and their metal complexes: Exploring the chemical properties and the antioxidant activity. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.02.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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235
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Prati F, Cavalli A, Bolognesi ML. Navigating the Chemical Space of Multitarget-Directed Ligands: From Hybrids to Fragments in Alzheimer's Disease. Molecules 2016; 21:466. [PMID: 27070562 PMCID: PMC6273289 DOI: 10.3390/molecules21040466] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/03/2016] [Accepted: 04/05/2016] [Indexed: 12/15/2022] Open
Abstract
Multitarget drug discovery is one of the hottest topics and most active fields in the search for new molecules against Alzheimer’s disease (AD). Over the last 20 years, many promising multitarget-directed ligands (MTDLs) have been identified and developed at a pre-clinical level. However, how to design them in a rational way remains the most fundamental challenge of medicinal chemists. This is related to the foundational question of achieving an optimized activity towards multiple targets of interest, while preserving drug-like properties. In this respect, large hybrid molecules and small fragments are poles apart. In this review article, our aim is to appraise what we have accomplished in the development of both hybrid- and fragment-like molecules directed to diverse AD targets (i.e., acetylcholinesterase, NMDA receptors, metal chelation, BACE-1 and GSK-3β). In addition, we attempt to highlight what are the persistent needs that deserve to be improved and cared for, with the ultimate goal of moving an MTDL to AD clinical studies.
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Affiliation(s)
- Federica Prati
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, I-40126 Bologna, Italy.
- Sir James Black Centre, College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK.
| | - Andrea Cavalli
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, I-40126 Bologna, Italy.
- Department of Drug Discovery and Development, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
| | - Maria Laura Bolognesi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, I-40126 Bologna, Italy.
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236
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Garrison AT, Abouelhassan Y, Norwood VM, Kallifidas D, Bai F, Nguyen MT, Rolfe M, Burch GM, Jin S, Luesch H, Huigens RW. Structure-Activity Relationships of a Diverse Class of Halogenated Phenazines That Targets Persistent, Antibiotic-Tolerant Bacterial Biofilms and Mycobacterium tuberculosis. J Med Chem 2016; 59:3808-25. [PMID: 27018907 DOI: 10.1021/acs.jmedchem.5b02004] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Persistent bacteria, including persister cells within surface-attached biofilms and slow-growing pathogens lead to chronic infections that are tolerant to antibiotics. Here, we describe the structure-activity relationships of a series of halogenated phenazines (HP) inspired by 2-bromo-1-hydroxyphenazine 1. Using multiple synthetic pathways, we probed diverse substitutions of the HP scaffold in the 2-, 4-, 7-, and 8-positions, providing critical information regarding their antibacterial and bacterial eradication profiles. Halogenated phenazine 14 proved to be the most potent biofilm-eradicating agent (≥99.9% persister cell killing) against MRSA (MBEC < 10 μM), MRSE (MBEC = 2.35 μM), and VRE (MBEC = 0.20 μM) biofilms while 11 and 12 demonstrated excellent antibacterial activity against M. tuberculosis (MIC = 3.13 μM). Unlike antimicrobial peptide mimics that eradicate biofilms through the general lysing of membranes, HPs do not lyse red blood cells. HPs are promising agents that effectively target persistent bacteria while demonstrating negligible toxicity against mammalian cells.
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Affiliation(s)
- Aaron T Garrison
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Yasmeen Abouelhassan
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Verrill M Norwood
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Dimitris Kallifidas
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Fang Bai
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Minh Thu Nguyen
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Melanie Rolfe
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Gena M Burch
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Shouguang Jin
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Hendrik Luesch
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
| | - Robert W Huigens
- Department of Medicinal Chemistry, College of Pharmacy, ‡Department of Molecular Genetics & Microbiology, College of Medicine, and ⊥Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida , Gainesville, Florida 32610
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237
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Cherdtrakulkiat R, Boonpangrak S, Sinthupoom N, Prachayasittikul S, Ruchirawat S, Prachayasittikul V. Derivatives (halogen, nitro and amino) of 8-hydroxyquinoline with highly potent antimicrobial and antioxidant activities. Biochem Biophys Rep 2016; 6:135-141. [PMID: 29214226 PMCID: PMC5689172 DOI: 10.1016/j.bbrep.2016.03.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 02/26/2016] [Accepted: 03/22/2016] [Indexed: 12/15/2022] Open
Abstract
8-Hydroxyquinoline (8HQ) compounds have been reported to
possess diverse bioactivities. In recent years, drug repositioning has gained
considerable attention in drug discovery and development. Herein, 8HQ
(1) and its derivatives (2–9) bearing
various substituents (amino, nitro, cyano and halogen) were investigated for their
antimicrobial against 27 microorganisms (agar dilution method) and antioxidant (DPPH
method) activities. The parent 8HQ (1) exerted a highly potent
antimicrobial activity against Gram-positive bacteria including diploid fungi and
yeast with MIC values in the range of 3.44–13.78 μM. Moreover, the
halogenated 8HQ, especially 7-bromo-8HQ (4) and clioquinol
(6), displayed a high antigrowth activity against Gram-negative
bacteria compared with the parent compound (1). Apparently, the
derivatives with a relatively high safely index, e.g., nitroxoline
(2), exhibited strong antibacterial activity against
Aeromonas hydrophila (MIC=5.26 μM) and
selectively inhibited the growth of P. aeruginosa with the MIC
value of 84.14 μM; cloxyquin (3) showed a strong
activity against Listseria monocytogenes and
Plesiomonas shigelloides with MIC values of 5.57 and
11.14 μM, respectively. Most compounds displayed an antioxidant
activity. Specifically, 5-amino-8HQ (8) was shown to be the most
potent antioxidant (IC50=8.70 μM) compared with
the positive control (α-tocopherol) with IC50
of 13.47 μM. The findings reveal that 8HQ derivatives are potential
candidates to be further developed as antimicrobial and antioxidant
agents. 8-Hydroxyquinoline exerted highly potent antibacterial
activity (Gram positive). Nitroxoline exhibited strong antibacterial activity against
Pseudomonas aeruginosa. Cloxyquin displayed a high growth inhibition against
Listeria monocytogenes and Plesiomonas
shigelloides. 5-Amino-8-hydroxyquinoline exerted the most potent
antioxidant activity (IC50=8.70 μM). Nitroxoline and cloxyquin had a relatively high selectivity
index.
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Affiliation(s)
- Rungrot Cherdtrakulkiat
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Somchai Boonpangrak
- Center for Innovation Development and Technology Transfer, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Nujarin Sinthupoom
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute and Program in Chemical Biology, Chulabhorn Graduate Institute, Bangkok 10210, Thailand.,Center of Excellence on Environmental Health and Toxicology, Commission on Higher Education (CHE), Ministry of Education, Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
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238
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Chen AY, Lü JM, Yao Q, Chen C. Entacapone is an Antioxidant More Potent than Vitamin C and Vitamin E for Scavenging of Hypochlorous Acid and Peroxynitrite, and the Inhibition of Oxidative Stress-Induced Cell Death. Med Sci Monit 2016; 22:687-96. [PMID: 26927838 PMCID: PMC4777242 DOI: 10.12659/msm.896462] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Entacapone (ENT), a clinical drug for the treatment of Parkinson’s disease, has been shown to have antioxidant effects, but little is known about its antioxidant mechanisms. The objective of the current study was to determine the antioxidant activity of ENT against different species of oxidants and compared it with that of vitamin C and vitamin E. We also determined the effect of ENT on oxidative stress-induced cell death in human umbilical vein endothelial cells (HUVECs). Material/Methods The total antioxidant activities of ENT, vitamin C and vitamin E were determined with a standard DPPH-scavenging assay. Specific assays to determine ENT’s scavenging activity on hypochlorous acid (HOCl), peroxynitrite (ONOO−), and hydrogen peroxide (H2O2), and the chelating effect on Fe(II) were used. H2O2-induced cell death in HUVECs was determined with the MTT assay. Results ENT (10 and 20 μM) scavenged 60% and 83% of DPPH activity, respectively. These percentages were greater than those resulting from using the same concentrations of vitamin C and vitamin E. ENT’s HOCl-scavenging activity was concentration-dependent and 8 to 20 times stronger than those of vitamin C and vitamin E. ENT’s ONOO−-scavenging activity was 8% to 30% stronger than that of vitamin C. However, ENT, vitamin C, and vitamin E were not able to directly scavenge H2O2, and did not show any chelating effect on Fe(II). Importantly ENT, but not vitamin C or vitamin E, inhibited H2O2-induced cell death in HUVECs. Conclusions ENT is an antioxidant that can scavenge toxic HOCl and ONOO− species and inhibit oxidative stress-induced cell death more effectively than vitamin C and vitamin E. ENT may have new clinical applications as an antioxidant in the treatment of ROS-induced diseases including cardiovascular disease, cancer, and neurodegenerative diseases.
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Affiliation(s)
- Aaron Y Chen
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Jian-Ming Lü
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Qizhi Yao
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Changyi Chen
- Division of Surgical Research, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
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239
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Phopin K, Sinthupoom N, Treeratanapiboon L, Kunwittaya S, Prachayasittikul S, Ruchirawat S, Prachayasittikul V. Antimalarial and antimicrobial activities of 8-Aminoquinoline-Uracils metal complexes. EXCLI JOURNAL 2016; 15:144-52. [PMID: 27103894 PMCID: PMC4834669 DOI: 10.17179/excli2016-101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 01/28/2016] [Indexed: 11/10/2022]
Abstract
8-Aminoquinoline (8AQ) derivatives have been reported to have antimalarial, anticancer, and antioxidant activities. This study investigated the potency of 8AQ-5-substituted (iodo and nitro) uracils metal (Mn, Cu, Ni) complexes (1-6) as antimalarial and antimicrobial agents. Interestingly, all of these metal complexes (1-6) showed fair antimalarial activities. Moreover, Cu complexes 2 (8AQ-Cu-5Iu) and 5 (8AQ-Cu-5Nu) exerted antimicrobial activities against Gram-negative bacteria including P. shigelloides and S. dysenteriae. The results reveal application of 8AQ and its metal complexes as potential compounds to be further developed as novel antimalarial and antibacterial agents.
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Affiliation(s)
- Kamonrat Phopin
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand; Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Nujarin Sinthupoom
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Lertyot Treeratanapiboon
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Sarun Kunwittaya
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, and Program in Chemical Biology, Chulabhorn Graduate Institute, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology, Commission on Higher Education (CHE), Ministry of Education, Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
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240
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Prati F, Bergamini C, Fato R, Soukup O, Korabecny J, Andrisano V, Bartolini M, Bolognesi ML. Novel 8-Hydroxyquinoline Derivatives as Multitarget Compounds for the Treatment of Alzheimer′s Disease. ChemMedChem 2016; 11:1284-95. [DOI: 10.1002/cmdc.201600014] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Federica Prati
- Department of Pharmacy and Biotechnology; Alma Mater Studiorum University of Bologna; Via Belmeloro 6/Via Irnerio 48 40126 Bologna Italy
| | - Christian Bergamini
- Department of Pharmacy and Biotechnology; Alma Mater Studiorum University of Bologna; Via Belmeloro 6/Via Irnerio 48 40126 Bologna Italy
| | - Romana Fato
- Department of Pharmacy and Biotechnology; Alma Mater Studiorum University of Bologna; Via Belmeloro 6/Via Irnerio 48 40126 Bologna Italy
| | - Ondrej Soukup
- Biomedical Research Center; University Hospital Hradec Kralove; Sokolska 581 500 05 Hradec Kralove Czech Republic
| | - Jan Korabecny
- Biomedical Research Center; University Hospital Hradec Kralove; Sokolska 581 500 05 Hradec Kralove Czech Republic
| | - Vincenza Andrisano
- Department for Quality Life Studies; Alma Mater Studiorum University of Bologna; Corso d'Augusto 237 47921 Rimini Italy
| | - Manuela Bartolini
- Department of Pharmacy and Biotechnology; Alma Mater Studiorum University of Bologna; Via Belmeloro 6/Via Irnerio 48 40126 Bologna Italy
| | - Maria Laura Bolognesi
- Department of Pharmacy and Biotechnology; Alma Mater Studiorum University of Bologna; Via Belmeloro 6/Via Irnerio 48 40126 Bologna Italy
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241
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Pastuch-Gawołek G, Malarz K, Mrozek-Wilczkiewicz A, Musioł M, Serda M, Czaplinska B, Musiol R. Small molecule glycoconjugates with anticancer activity. Eur J Med Chem 2016; 112:130-144. [PMID: 26890119 DOI: 10.1016/j.ejmech.2016.01.061] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/12/2016] [Accepted: 01/30/2016] [Indexed: 11/18/2022]
Abstract
Glycoconjugates are combinations of sugar moieties with organic compounds. Due to their biological resemblance, such structures often have properties that are desirable for drugs. In this study we designed and synthesised several glycoconjugates from small molecular quinolines and substituted gluco- and galactopyranosyl amines. Although the parent quinoline compounds were inactive in affordable concentrations, the glycoconjugates that were obtained appeared to be cytotoxic against cancer cells at the micromolar level. When combined with copper ions, their activity increased even further. Their mechanism of action is connected to the formation of reactive oxygen species and the intercalation of DNA.
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Affiliation(s)
- Gabriela Pastuch-Gawołek
- Silesian University of Technology, Faculty of Chemistry, Chair of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Krzywoustego 4, 44-100 Gliwice, Poland
| | - Katarzyna Malarz
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-006 Katowice, Poland
| | - Anna Mrozek-Wilczkiewicz
- A. Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; Silesian Center for Education and Interdisciplinary Research, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Marta Musioł
- Silesian University of Technology, Faculty of Chemistry, Chair of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Krzywoustego 4, 44-100 Gliwice, Poland
| | - Maciej Serda
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-006 Katowice, Poland
| | - Barbara Czaplinska
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-006 Katowice, Poland
| | - Robert Musiol
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-006 Katowice, Poland.
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242
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An effective in vitro and in vivo antileishmanial activity and mechanism of action of 8-hydroxyquinoline against Leishmania species causing visceral and tegumentary leishmaniasis. Vet Parasitol 2016; 217:81-8. [DOI: 10.1016/j.vetpar.2016.01.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/21/2015] [Accepted: 01/04/2016] [Indexed: 12/14/2022]
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243
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Aoki S, Ariyasu S, Hanaya K, Hisamatsu Y, Sugai T. Chemical Reactions of 8-Quinolinol Derivatives and Their Applications to Biochemical Tools and Enzyme Inhibitors. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shin Aoki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Shinya Ariyasu
- School of Physical & Mathematical Sciences, Nanyang Technological University
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244
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Boda SK, Pandit S, Garai A, Pal D, Basu B. Bacterial siderophore mimicking iron complexes as DNA targeting antimicrobials. RSC Adv 2016. [DOI: 10.1039/c6ra02603f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microbial secretion of siderophores for iron uptake can be employed as an efficient strategy to smuggle in bactericidal agents by conjugation to iron.
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Affiliation(s)
- Sunil Kumar Boda
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Subhendu Pandit
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Debnath Pal
- Department of Computational and Data Sciences
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Bikramjit Basu
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
- Centre for Biosystems Science and Engineering
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245
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Nhu D, Lessene G, Huang DCS, Burns CJ. Small molecules targeting Mcl-1: the search for a silver bullet in cancer therapy. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00582e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Progress towards the development of potent and selective inhibitors of the pro-survival protein Mcl-1 is reviewed.
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Affiliation(s)
- Duong Nhu
- The Walter and Eliza Hall Institute of Medical Research
- Australia
- Department of Medical Biology
- The University of Melbourne
- Australia
| | - Guillaume Lessene
- The Walter and Eliza Hall Institute of Medical Research
- Australia
- Department of Medical Biology
- The University of Melbourne
- Australia
| | - David C. S. Huang
- The Walter and Eliza Hall Institute of Medical Research
- Australia
- Department of Medical Biology
- The University of Melbourne
- Australia
| | - Christopher J. Burns
- The Walter and Eliza Hall Institute of Medical Research
- Australia
- Department of Medical Biology
- The University of Melbourne
- Australia
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246
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Isakova A, Efremova O, Pullan N, Lüer L, Topham PD. Design, synthesis and RAFT polymerisation of a quinoline-based monomer for use in metal-binding composite microfibers. RSC Adv 2016. [DOI: 10.1039/c5ra25551a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal-binding polymer fibres have attracted major attention for diverse applications in membranes for metal sequestration from waste waters, non-woven wound dressings, matrices for photocatalysis, and many more.
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Affiliation(s)
- Anna Isakova
- Chemical Engineering and Applied Chemistry
- Aston University
- Birmingham
- UK
| | | | - Nikki Pullan
- Chemical Engineering and Applied Chemistry
- Aston University
- Birmingham
- UK
| | | | - Paul D. Topham
- Chemical Engineering and Applied Chemistry
- Aston University
- Birmingham
- UK
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Mazaheripour A, Dibble DJ, Umerani MJ, Park YS, Lopez R, Laidlaw D, Vargas E, Ziller JW, Gorodetsky AA. An Aza-Diels–Alder Approach to Crowded Benzoquinolines. Org Lett 2015; 18:156-9. [DOI: 10.1021/acs.orglett.5b02939] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amir Mazaheripour
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
| | - David J. Dibble
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
| | - Mehran J. Umerani
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
| | - Young S. Park
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
| | - Robert Lopez
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Dylan Laidlaw
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Eriberto Vargas
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
| | - Joseph W. Ziller
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Alon A. Gorodetsky
- Department
of Chemical Engineering and Materials Science, University of California, Irvine, Irvine, California 92697, United States
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697, United States
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Sgarlata C, Oliveri V, Spencer J. A 8-Hydroxyquinoline-Cyclodextrin Conjugate as an Efficient Chelating Agent for Cobalt(II) and Nickel(II) in Neutral Aqueous Solution. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501198] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Phillips OA, D'Silva R, Bahta TO, Sharaf LH, Udo EE, Benov L, Eric Walters D. Synthesis and biological evaluation of novel 5-(hydroxamic acid)methyl oxazolidinone derivatives. Eur J Med Chem 2015; 106:120-31. [PMID: 26536532 DOI: 10.1016/j.ejmech.2015.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 09/29/2015] [Accepted: 10/12/2015] [Indexed: 12/01/2022]
Abstract
Research activities on the oxazolidinone antibacterial class of compounds continue to focus on developing newer derivatives with improved potency, broad-spectrum activity and safety profiles superior to linezolid. Among the safety concerns with the oxazolidinone antibacterial agents is inhibition of monoamine oxidases (MAO) resulting from their structural similarity with toloxatone, a known MAO inhibitor. Diverse substitution patterns at the C-5 position of the oxazolidinone ring have been shown to significantly affect both antibacterial activity and MAO inhibition to varying degrees. Also, the antibacterial activity of compounds containing iron-chelating functionalities, such as the hydroxamic acids, 8-hydroxyquinolines and catechols have been correlated to their ability to alter iron intake and/or metabolism. Hence a series of novel 5-(hydroxamic acid)methyl oxazolidinone derivatives were synthesized and evaluated for their antibacterial and MAO-A and -B inhibitory activities. The compounds were devoid of significant antibacterial activity but most demonstrated moderate MAO-A and -B inhibitory activities. Computer modeling studies revealed that the lack of potent antibacterial activity was due to significant steric interaction between the hydroxamic acid N-OH oxygen atom and one of the G2540 5'-phosphate oxygen atoms at the bacterial ribosomal binding site. Therefore, the replacement of the 5-acetamidomethyl group of linezolid with the 5-(N-hydroxyacetamido)methyl group present in the hydroxamic acid oxazolidinone derivatives was concluded to be detrimental to antibacterial activity. Furthermore, the 5-(hydroxamic acid)methyl oxazolidinone derivatives were also less active as MAO-A and -B inhibitors compared with linezolid and the selective inhibitors clorgyline and pargyline. In general, the 5-(hydroxamic acid)methyl oxazolidinone derivatives demonstrated moderate but selective MAO-B inhibitory activity.
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Affiliation(s)
- Oludotun A Phillips
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - Roselyn D'Silva
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - Teklu O Bahta
- Department of Pharmaceutical Sciences, College of Pharmacy, Rosalind Franklin University of Medicine & Science, North Chicago 60064, USA.
| | - Leyla H Sharaf
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - Edet E Udo
- Department of Microbiology, Faculty of Medicine, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - Ludmil Benov
- Department of Biochemistry, Faculty of Medicine, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - D Eric Walters
- Department of Pharmaceutical Sciences, College of Pharmacy, Rosalind Franklin University of Medicine & Science, North Chicago 60064, USA.
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250
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Rational approach to an antiprion compound with a multiple mechanism of action. Future Med Chem 2015; 7:2113-20. [DOI: 10.4155/fmc.15.79] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: The main pathogenic event of prion disorders has been identified in the deposition of the disease-associated prion protein (PrPSc), which is accompanied by metal dyshomeostasis. Results: The multitarget-directed ligand 1, designed by combining a heteroaromatic prion recognition motif to an 8-hydroxyquinoline metal chelator, has been developed as a potential antiprion disease-modifying agent. Importantly, 1 was found to effectively clear PrPSc from scrapie-infected cells, and, at the same time, inhibit metal-induced prion aggregation and reactive oxygen species generation. 1 was also characterized in terms of pharmacokinetic properties in a preliminary in vitro investigation. Conclusion: Compound 1 has emerged as a suitable lead candidate against prion diseases and as a good starting point for a further optimization process.
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