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Yang JJ, Goff A, Wild DJ, Ding Y, Annis A, Kerber R, Foote B, Passi A, Duerksen JL, London S, Puhl AC, Lane TR, Braunstein M, Waddell SJ, Ekins S. Computational drug repositioning identifies niclosamide and tribromsalan as inhibitors of Mycobacterium tuberculosis and Mycobacterium abscessus. Tuberculosis (Edinb) 2024; 146:102500. [PMID: 38432118 PMCID: PMC10978224 DOI: 10.1016/j.tube.2024.102500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/20/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
Tuberculosis (TB) is still a major global health challenge, killing over 1.5 million people each year, and hence, there is a need to identify and develop novel treatments for Mycobacterium tuberculosis (M. tuberculosis). The prevalence of infections caused by nontuberculous mycobacteria (NTM) is also increasing and has overtaken TB cases in the United States and much of the developed world. Mycobacterium abscessus (M. abscessus) is one of the most frequently encountered NTM and is difficult to treat. We describe the use of drug-disease association using a semantic knowledge graph approach combined with machine learning models that has enabled the identification of several molecules for testing anti-mycobacterial activity. We established that niclosamide (M. tuberculosis IC90 2.95 μM; M. abscessus IC90 59.1 μM) and tribromsalan (M. tuberculosis IC90 76.92 μM; M. abscessus IC90 147.4 μM) inhibit M. tuberculosis and M. abscessus in vitro. To investigate the mode of action, we determined the transcriptional response of M. tuberculosis and M. abscessus to both compounds in axenic log phase, demonstrating a broad effect on gene expression that differed from known M. tuberculosis inhibitors. Both compounds elicited transcriptional responses indicative of respiratory pathway stress and the dysregulation of fatty acid metabolism.
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Affiliation(s)
- Jeremy J Yang
- School of Informatics, Computing and Engineering, Indiana University, Bloomington, IN, USA; Data2Discovery, Inc., Bloomington, IN, USA; Department of Internal Medicine Translational Informatics Division, University of New Mexico, Albuquerque, NM, USA
| | - Aaron Goff
- Department of Global Health and Infection, Brighton & Sussex Medical School, University of Sussex, UK
| | - David J Wild
- School of Informatics, Computing and Engineering, Indiana University, Bloomington, IN, USA; Data2Discovery, Inc., Bloomington, IN, USA
| | - Ying Ding
- School of Informatics, Computing and Engineering, Indiana University, Bloomington, IN, USA; Data2Discovery, Inc., Bloomington, IN, USA; School of Information, Dell Medical School, University of Texas, Austin, TX, USA
| | - Ayano Annis
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, NC, 27599, USA
| | | | | | - Anurag Passi
- Department of Pediatrics, UC San Diego, San Diego, CA, USA
| | | | | | - Ana C Puhl
- Collaborations Pharmaceuticals Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC, 27606, USA
| | - Thomas R Lane
- Collaborations Pharmaceuticals Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC, 27606, USA
| | - Miriam Braunstein
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, NC, 27599, USA
| | - Simon J Waddell
- Department of Global Health and Infection, Brighton & Sussex Medical School, University of Sussex, UK
| | - Sean Ekins
- Collaborations Pharmaceuticals Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC, 27606, USA.
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2
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Horváth L, Biri-Kovács B, Baranyai Z, Stipsicz B, Méhes E, Jezsó B, Krátký M, Vinšová J, Bősze S. New Salicylanilide Derivatives and Their Peptide Conjugates as Anticancer Compounds: Synthesis, Characterization, and In Vitro Effect on Glioblastoma. ACS OMEGA 2024; 9:16927-16948. [PMID: 38645331 PMCID: PMC11024950 DOI: 10.1021/acsomega.3c05727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 04/23/2024]
Abstract
Pharmacologically active salicylanilides (2-hydroxy-N-phenylbenzamides) have been a promising area of interest in medicinal chemistry-related research for quite some time. This group of compounds has shown a wide spectrum of biological activities, including but not limited to anticancer effects. In this study, substituted salicylanilides were chosen to evaluate the in vitro activity on U87 human glioblastoma (GBM) cells. The parent salicylanilide, salicylanilide 5-chloropyrazinoates, a 4-aminosalicylic acid derivative, and the new salicylanilide 4-formylbenzoates were chemically and in vitro characterized. To enhance the internalization of the compounds, they were conjugated to delivery peptides with the formation of oxime bonds. Oligotuftsins ([TKPKG]n, n = 1-4), the ligands of neuropilin receptors, were used as GBM-targeting carrier peptides. The in vitro cellular uptake, intracellular localization, and penetration ability on tissue-mimicking models of the fluorescent peptide derivatives were determined. The compounds and their peptide conjugates significantly decreased the viability of U87 glioma cells. Salicylanilide compound-induced GBM cell death was associated with activation of autophagy, as characterized by immunodetection of autophagy-related processing of light chain 3 protein.
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Affiliation(s)
- Lilla Horváth
- ELKH-ELTE
Research Group of Peptide Chemistry, Eötvös Loránd
Research Network, Eötvös Loránd
University, Budapest 1117, Hungary
| | - Beáta Biri-Kovács
- ELKH-ELTE
Research Group of Peptide Chemistry, Eötvös Loránd
Research Network, Eötvös Loránd
University, Budapest 1117, Hungary
| | - Zsuzsa Baranyai
- ELKH-ELTE
Research Group of Peptide Chemistry, Eötvös Loránd
Research Network, Eötvös Loránd
University, Budapest 1117, Hungary
| | - Bence Stipsicz
- ELKH-ELTE
Research Group of Peptide Chemistry, Eötvös Loránd
Research Network, Eötvös Loránd
University, Budapest 1117, Hungary
- Institute
of Biology, Doctoral School of Biology, Eötvös Loránd University, Budapest 1117, Hungary
| | - Előd Méhes
- Institute
of Physics, Department of Biological Physics, Eötvös Loránd University, Budapest 1117, Hungary
| | - Bálint Jezsó
- Research
Centre for Natural Sciences, Institute of
Enzymology, Budapest 1053, Hungary
- ELTE-MTA
“Momentum” Motor Enzymology Research Group, Department
of Biochemistry, Eötvös Loránd
University, Budapest 1117, Hungary
| | - Martin Krátký
- Department
of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec
Králové, Charles University, 500 03 Hradec Králové, Czech Republic
| | - Jarmila Vinšová
- Department
of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec
Králové, Charles University, 500 03 Hradec Králové, Czech Republic
| | - Szilvia Bősze
- ELKH-ELTE
Research Group of Peptide Chemistry, Eötvös Loránd
Research Network, Eötvös Loránd
University, Budapest 1117, Hungary
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3
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Host cell targeting of novel antimycobacterial 4-aminosalicylic acid derivatives with tuftsin carrier peptides. Eur J Pharm Biopharm 2022; 174:111-130. [DOI: 10.1016/j.ejpb.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 03/08/2022] [Accepted: 03/24/2022] [Indexed: 11/23/2022]
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Small molecule QF84139 ameliorates cardiac hypertrophy via activating the AMPK signaling pathway. Acta Pharmacol Sin 2022; 43:588-601. [PMID: 33967278 PMCID: PMC8888632 DOI: 10.1038/s41401-021-00678-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/02/2021] [Indexed: 02/06/2023] Open
Abstract
Cardiac hypertrophy is a common adaptive response to a variety of stimuli, but prolonged hypertrophy leads to heart failure. Hence, discovery of agents treating cardiac hypertrophy is urgently needed. In the present study, we investigated the effects of QF84139, a newly synthesized pyrazine derivative, on cardiac hypertrophy and the underlying mechanisms. In neonatal rat cardiomyocytes (NRCMs), pretreatment with QF84139 (1-10 μM) concentration-dependently inhibited phenylephrine-induced hypertrophic responses characterized by fetal genes reactivation, increased ANP protein level and enlarged cardiomyocytes. In adult male mice, administration of QF84139 (5-90 mg·kg-1·d-1, i.p., for 2 weeks) dose-dependently reversed transverse aortic constriction (TAC)-induced cardiac hypertrophy displayed by cardiomyocyte size, left ventricular mass, heart weights, and reactivation of fetal genes. We further revealed that QF84139 selectively activated the AMPK signaling pathway without affecting the phosphorylation of CaMKIIδ, ERK1/2, AKT, PKCε, and P38 kinases in phenylephrine-treated NRCMs and in the hearts of TAC-treated mice. In NRCMs, QF84139 did not show additive effects with metformin on the AMPK activation, whereas the anti-hypertrophic effect of QF84139 was abolished by an AMPK inhibitor Compound C or knockdown of AMPKα2. In AMPKα2-deficient mice, the anti-hypertrophic effect of QF84139 was also vanished. These results demonstrate that QF84139 attenuates the PE- and TAC-induced cardiac hypertrophy via activating the AMPK signaling. This structurally novel compound would be a promising lead compound for developing effective agents for the treatment of cardiac hypertrophy.
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Schmalstig AA, Zorn KM, Murci S, Robinson A, Savina S, Komarova E, Makarov V, Braunstein M, Ekins S. Mycobacterium abscessus drug discovery using machine learning. Tuberculosis (Edinb) 2022; 132:102168. [PMID: 35077930 PMCID: PMC8855326 DOI: 10.1016/j.tube.2022.102168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/30/2021] [Accepted: 01/14/2022] [Indexed: 01/22/2023]
Abstract
The prevalence of infections by nontuberculous mycobacteria is increasing, having surpassed tuberculosis in the United States and much of the developed world. Nontuberculous mycobacteria occur naturally in the environment and are a significant problem for patients with underlying lung diseases such as bronchiectasis, chronic obstructive pulmonary disease, and cystic fibrosis. Current treatment regimens are lengthy, complicated, toxic and they are often unsuccessful as seen by disease recurrence. Mycobacterium abscessus is one of the most commonly encountered organisms in nontuberculous mycobacteria disease and it is the most difficult to eradicate. There is currently no systematically proven regimen that is effective for treating M. abscessus infections. Our approach to drug discovery integrates machine learning, medicinal chemistry and in vitro testing and has been previously applied to Mycobacterium tuberculosis. We have now identified several novel 1-(phenylsulfonyl)-1H-benzimidazol-2-amines that have weak activity on M. abscessus in vitro but may represent a starting point for future further medicinal chemistry optimization. We also address limitations still to be overcome with the machine learning approach for M. abscessus.
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Affiliation(s)
- Alan A. Schmalstig
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, 27599, USA
| | - Kimberley M. Zorn
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive Lab 3510, Raleigh, North Carolina, 27606, USA
| | - Sebastian Murci
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, 27599, USA
| | - Andrew Robinson
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, 27599, USA
| | - Svetlana Savina
- Research Center of Biotechnology RAS, Moscow, 119071, Russia
| | - Elena Komarova
- Research Center of Biotechnology RAS, Moscow, 119071, Russia
| | - Vadim Makarov
- Research Center of Biotechnology RAS, Moscow, 119071, Russia
| | - Miriam Braunstein
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill, North Carolina, 27599, USA
| | - Sean Ekins
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive Lab 3510, Raleigh, North Carolina, 27606, USA.,Corresponding author: Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive Lab 3510, Raleigh, North Carolina, 27606, USA.
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Abstract
Nontuberculous mycobacteria infections are a growing concern, and their incidence has been increasing worldwide in recent years. Current treatments are not necessarily useful because many were initially designed to work against other bacteria, such as Mycobacterium tuberculosis. In addition, inadequate treatment means that resistant strains are increasingly appearing, particularly for Mycobacterium abscessus, one of the most virulent nontuberculous mycobacteria. There is an urgent need to develop new antibiotics specifically directed against these nontuberculous mycobacteria. To help in this fight against the emergence of these pathogens, this review describes the most promising heterocyclic antibiotics under development, with particular attention paid to their structure-activity relationships.
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Baranyai Z, Biri-Kovács B, Krátký M, Szeder B, Debreczeni ML, Budai J, Kovács B, Horváth L, Pári E, Németh Z, Cervenak L, Zsila F, Méhes E, Kiss É, Vinšová J, Bősze S. Cellular Internalization and Inhibition Capacity of New Anti-Glioma Peptide Conjugates: Physicochemical Characterization and Evaluation on Various Monolayer- and 3D-Spheroid-Based in Vitro Platforms. J Med Chem 2021; 64:2982-3005. [PMID: 33719423 DOI: 10.1021/acs.jmedchem.0c01399] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Most therapeutic agents used for treating brain malignancies face hindered transport through the blood-brain barrier (BBB) and poor tissue penetration. To overcome these problems, we developed peptide conjugates of conventional and experimental anticancer agents. SynB3 cell-penetrating peptide derivatives were applied that can cross the BBB. Tuftsin derivatives were used to target the neuropilin-1 transport system for selectivity and better tumor penetration. Moreover, SynB3-tuftsin tandem compounds were synthesized to combine the beneficial properties of these peptides. Most of the conjugates showed high and selective efficacy against glioblastoma cells. SynB3 and tandem derivatives demonstrated superior cellular internalization. The penetration profile of the conjugates was determined on a lipid monolayer and Transwell co-culture system with noncontact HUVEC-U87 monolayers as simple ex vivo and in vitro BBB models. Importantly, in 3D spheroids, daunomycin-peptide conjugates possessed a better tumor penetration ability than daunomycin. These conjugates are promising tools for the delivery systems with tunable features.
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Affiliation(s)
- Zsuzsa Baranyai
- Eötvös Loránd Research Network, Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Beáta Biri-Kovács
- Eötvös Loránd Research Network, Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary.,Institute of Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Martin Krátký
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Bálint Szeder
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary
| | - Márta L Debreczeni
- 3rd Department of Medicine Research Laboratory, Semmelweis University, Kútvölgyi út 4, H-1125 Budapest, Hungary
| | - Johanna Budai
- Eötvös Loránd Research Network, Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Bence Kovács
- Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2-4, H-2163 Vácrátót, Hungary
| | - Lilla Horváth
- Eötvös Loránd Research Network, Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Edit Pári
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Zsuzsanna Németh
- 3rd Department of Medicine Research Laboratory, Semmelweis University, Kútvölgyi út 4, H-1125 Budapest, Hungary
| | - László Cervenak
- 3rd Department of Medicine Research Laboratory, Semmelweis University, Kútvölgyi út 4, H-1125 Budapest, Hungary
| | - Ferenc Zsila
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary
| | - Előd Méhes
- Department of Biological Physics, Institute of Physics, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - Jarmila Vinšová
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Szilvia Bősze
- Eötvös Loránd Research Network, Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
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Egorova A, Jackson M, Gavrilyuk V, Makarov V. Pipeline of anti-Mycobacterium abscessus small molecules: Repurposable drugs and promising novel chemical entities. Med Res Rev 2021; 41:2350-2387. [PMID: 33645845 DOI: 10.1002/med.21798] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 02/01/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022]
Abstract
The Mycobacterium abscessus complex is a group of emerging pathogens that are difficult to treat. There are no effective drugs for successful M. abscessus pulmonary infection therapy, and existing drug regimens recommended by the British or the American Thoracic Societies are associated with poor clinical outcomes. Therefore, novel antibacterial drugs are urgently needed to contain this global threat. The current anti-M. abscessus small-molecule drug development process can be enhanced by two parallel strategies-discovery of compounds from new chemical classes and commercial drug repurposing. This review focuses on recent advances in the finding of novel small-molecule agents, and more particularly focuses on the activity, mode of action and structure-activity relationship of promising inhibitors from five different chemical classes-benzimidazoles, indole-2-carboxamides, benzothiazoles, 4-piperidinoles, and oxazolidionones. We further discuss some other interesting small molecules, such as thiacetazone derivatives and benzoboroxoles, that are in the early stages of drug development, and summarize current knowledge about the efficacy of repurposable drugs, such as rifabutin, tedizolid, bedaquiline, and others. We finally review targets of therapeutic interest in M. abscessus that may be worthy of future drug and adjunct therapeutic development.
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Affiliation(s)
- Anna Egorova
- Research Center of Biotechnology RAS, Moscow, Russia
| | - Mary Jackson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Colorado, Fort Collins, USA
| | | | - Vadim Makarov
- Research Center of Biotechnology RAS, Moscow, Russia
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Multitargeting Compounds: A Promising Strategy to Overcome Multi-Drug Resistant Tuberculosis. Molecules 2020; 25:molecules25051239. [PMID: 32182964 PMCID: PMC7179463 DOI: 10.3390/molecules25051239] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 02/28/2020] [Accepted: 03/08/2020] [Indexed: 12/18/2022] Open
Abstract
Tuberculosis is still an urgent global health problem, mainly due to the spread of multi-drug resistant M. tuberculosis strains, which lead to the need of new more efficient drugs. A strategy to overcome the problem of the resistance insurgence could be the polypharmacology approach, to develop single molecules that act on different targets. Polypharmacology could have features that make it an approach more effective than the classical polypharmacy, in which different drugs with high affinity for one target are taken together. Firstly, for a compound that has multiple targets, the probability of development of resistance should be considerably reduced. Moreover, such compounds should have higher efficacy, and could show synergic effects. Lastly, the use of a single molecule should be conceivably associated with a lower risk of side effects, and problems of drug–drug interaction. Indeed, the multitargeting approach for the development of novel antitubercular drugs have gained great interest in recent years. This review article aims to provide an overview of the most recent and promising multitargeting antitubercular drug candidates.
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Bento CM, Gomes MS, Silva T. Looking beyond Typical Treatments for Atypical Mycobacteria. Antibiotics (Basel) 2020; 9:antibiotics9010018. [PMID: 31947883 PMCID: PMC7168257 DOI: 10.3390/antibiotics9010018] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 12/31/2019] [Accepted: 12/31/2019] [Indexed: 12/30/2022] Open
Abstract
The genus Mycobacterium comprises not only the deadliest of bacterial pathogens, Mycobacterium tuberculosis, but several other pathogenic species, including M. avium and M. abscessus. The incidence of infections caused by atypical or nontuberculous mycobacteria (NTM) has been steadily increasing, and is associated with a panoply of diseases, including pulmonary, soft-tissue, or disseminated infections. The treatment for NTM disease is particularly challenging, due to its long duration, to variability in bacterial susceptibility profiles, and to the lack of evidence-based guidelines. Treatment usually consists of a combination of at least three drugs taken from months to years, often leading to severe secondary effects and a high chance of relapse. Therefore, new treatment approaches are clearly needed. In this review, we identify the main limitations of current treatments and discuss different alternatives that have been put forward in recent years, with an emphasis on less conventional therapeutics, such as antimicrobial peptides, bacteriophages, iron chelators, or host-directed therapies. We also review new forms of the use of old drugs, including the repurposing of non-antibacterial molecules and the incorporation of antimicrobials into ionic liquids. We aim to stimulate advancements in testing these therapies in relevant models, in order to provide clinicians and patients with useful new tools with which to treat these devastating diseases.
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Affiliation(s)
- Clara M. Bento
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (C.M.B.); (T.S.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - Maria Salomé Gomes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (C.M.B.); (T.S.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- Correspondence:
| | - Tânia Silva
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (C.M.B.); (T.S.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
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Phenolic N-monosubstituted carbamates: Antitubercular and toxicity evaluation of multi-targeting compounds. Eur J Med Chem 2019; 181:111578. [DOI: 10.1016/j.ejmech.2019.111578] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 11/21/2022]
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12
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Staunton PM, Miranda-CasoLuengo AA, Loftus BJ, Gormley IC. BINDER: computationally inferring a gene regulatory network for Mycobacterium abscessus. BMC Bioinformatics 2019; 20:466. [PMID: 31500560 PMCID: PMC6734328 DOI: 10.1186/s12859-019-3042-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 08/21/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Although many of the genic features in Mycobacterium abscessus have been fully validated, a comprehensive understanding of the regulatory elements remains lacking. Moreover, there is little understanding of how the organism regulates its transcriptomic profile, enabling cells to survive in hostile environments. Here, to computationally infer the gene regulatory network for Mycobacterium abscessus we propose a novel statistical computational modelling approach: BayesIan gene regulatory Networks inferreD via gene coExpression and compaRative genomics (BINDER). In tandem with derived experimental coexpression data, the property of genomic conservation is exploited to probabilistically infer a gene regulatory network in Mycobacterium abscessus.Inference on regulatory interactions is conducted by combining 'primary' and 'auxiliary' data strata. The data forming the primary and auxiliary strata are derived from RNA-seq experiments and sequence information in the primary organism Mycobacterium abscessus as well as ChIP-seq data extracted from a related proxy organism Mycobacterium tuberculosis. The primary and auxiliary data are combined in a hierarchical Bayesian framework, informing the apposite bivariate likelihood function and prior distributions respectively. The inferred relationships provide insight to regulon groupings in Mycobacterium abscessus. RESULTS We implement BINDER on data relating to a collection of 167,280 regulator-target pairs resulting in the identification of 54 regulator-target pairs, across 5 transcription factors, for which there is strong probability of regulatory interaction. CONCLUSIONS The inferred regulatory interactions provide insight to, and a valuable resource for further studies of, transcriptional control in Mycobacterium abscessus, and in the family of Mycobacteriaceae more generally. Further, the developed BINDER framework has broad applicability, useable in settings where computational inference of a gene regulatory network requires integration of data sources derived from both the primary organism of interest and from related proxy organisms.
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Affiliation(s)
- Patrick M. Staunton
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | | | - Brendan J. Loftus
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Isobel Claire Gormley
- School of Mathematics and Statistics, Insight Centre for Data Analytics, University College Dublin, Dublin, Ireland
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Levinson MR, Blondeau JM, Rosenkrantz WS, Plowgian CB. The in vitro antibacterial activity of the anthelmintic drug oxyclozanide against common small animal bacterial pathogens. Vet Dermatol 2019; 30:314-e87. [PMID: 31062461 DOI: 10.1111/vde.12755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Repurposing existing drugs is one approach to address the growing concerns of multi-drug resistant bacterial pathogens in veterinary medicine. Oxyclozanide is in the anthelmintic drug class salicylanilide, which has been used primarily as a treatment and preventative for Fasciola hepatica in ruminants. The antimicrobial activity of oxyclozanide has been studied in human medicine; its activity against common small animal bacterial pathogens such as Staphylococcus pseudintermedius has yet to be determined. OBJECTIVE The aim of this study was to measure and establish the minimum inhibitory concentration (MIC) and mutant prevention concentration (MPC) of oxyclozanide against S. pseudintermedius and other common small animal bacterial pathogens. METHODS AND MATERIALS The MIC and MPC of oxyclozanide were determined from eighteen meticillin sensitive S. pseudintermedius (MSSP) isolates and eleven meticillin-resistant S. pseudintermedius (MRSP), as well as single isolates of Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Enterococcus faecalis. RESULTS The MIC of the eighteen meticillin-sensitive S. pseudintermedius isolates was 0.5-1 μg/mL and the MPC ranged between 16 and 32 μg/mL. The MIC of the eleven meticillin-resistant strains of S. pseudintermedius ranged from 0.5 to 2 μg/mL with a MPC ranging between 16 and 32 μg/mL. A single isolate of meticillin-resistant S. aureus (MRSA) had an MIC of 1 μg/mL and MPC 16 μg/mL. No inhibition of growth was seen at the concentrations tested for bacterial isolate strains E. coli, P. aeruginosa and E. faecalis. CONCLUSION AND CLINICAL IMPORTANCE Oxyclozanide demonstrated in-vitro antibacterial activity against meticillin-resistant S. pseudintermedius. Further studies are needed to evaluate the potential use of oxyclozanide as a topical bactericidal agent.
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Affiliation(s)
| | - Joseph M Blondeau
- Royal University Hospital and University of Saskatchewan, 103 Hospital Dr, Saskatoon, Saskatchewan, Canada, S7N 0W8
| | | | - Curtis B Plowgian
- Animal Dermatology Clinic, 3901 E 82nd Street, Indianapolis, IN, 46250, USA
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Galal AMF, Atta D, Abouelsayed A, Ibrahim MA, Hanna AG. Configuration and molecular structure of 5-chloro-N-(4-sulfamoylbenzyl) salicylamide derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:476-486. [PMID: 30807945 DOI: 10.1016/j.saa.2019.02.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 01/28/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
A systematic study on sulfonamide derivatives with salicylamide core is presented for possible use in pharmaceutical applications. The molecular structure of eight different compounds has been investigated by FTIR in the frequency range 4000-400 cm-1 to recognize the possible geometrical shape of the molecules needed to uniquely identify the activity of molecule in cancer cell. The electronic charge distribution of these different compounds is further illustrated by UV-Vis spectroscopy in the frequency range 190-1100 nm. The theoretical results obtained from molecular modeling calculations showed that the hydrogen bonds between the OH, CO, NH, and/or CH groups vary from one compound to the other regarding their number and bond length. This confirms the experimental FTIR results regarding the position and broadening of the OH and NH groups due to free rotation of the amide group because of changing the compounds structure by adding different groups to the last phenyl ring. The hydrogen bonds take different directions and values from one compound to the other, which seems to be the most important factor regarding the activity of these different compounds in cancer cell. Both theoretical molecular modeling calculations and FTIR experimental results have strongly evaluated the relation between the chemical structure of 5-chloro-N (4-sulfamoylbenzyl) salicylamide derivatives and their biological activities.
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Affiliation(s)
- Alaaeldin M F Galal
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), Dokki, Giza 12622, Egypt
| | - Diaa Atta
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza 12622, Egypt
| | - Ahmed Abouelsayed
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza 12622, Egypt
| | - Medhat A Ibrahim
- Spectroscopy Department, Physics Division, National Research Centre, 33 El Bohouth St. (former El Tahrir st.), Dokki, Giza 12622, Egypt.
| | - Atef G Hanna
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, 33 El Bohouth st. (former El Tahrir st.), Dokki, Giza 12622, Egypt
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15
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Zitko J, Mindlová A, Valášek O, Jand'ourek O, Paterová P, Janoušek J, Konečná K, Doležal M. Design, Synthesis and Evaluation of N-pyrazinylbenzamides as Potential Antimycobacterial Agents. Molecules 2018; 23:molecules23092390. [PMID: 30231544 PMCID: PMC6225228 DOI: 10.3390/molecules23092390] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/13/2018] [Accepted: 09/17/2018] [Indexed: 11/18/2022] Open
Abstract
Three series of N-(pyrazin-2-yl)benzamides were designed as retro-amide analogues of previously published N-phenylpyrazine-2-carboxamides with in vitro antimycobacterial activity. The synthesized retro-amides were evaluated for in vitro growth inhibiting activity against Mycobacterium tuberculosis H37Rv (Mtb), three non-tuberculous mycobacterial strains (M. avium, M. kansasii, M. smegmatis) and selected bacterial and fungal strains of clinical importance. Regarding activity against Mtb, most N-pyrazinylbenzamides (retro-amides) possessed lower or no activity compared to the corresponding N-phenylpyrazine-2-carboxamides with the same substitution pattern. However, the active retro-amides tended to have lower HepG2 cytotoxicity and better selectivity. Derivatives with 5-chloro substitution on the pyrazine ring were generally more active compared to their 6-cloro positional isomers or non-chlorinated analogues. The best antimycobacterial activity against Mtb was found in N-(5-chloropyrazin-2-yl)benzamides with short alkyl (2h: R2 = Me; 2i: R2 = Et) in position 4 of the benzene ring (MIC = 6.25 and 3.13 µg/mL, respectively, with SI > 10). N-(5-Chloropyrazin-2-yl)benzamides with hydroxy substitution (2b: R2 = 2-OH; 2d: R2 = 4-OH) on the benzene ring or their acetylated synthetic precursors possessed the broadest spectrum of activity, being active in all three groups of mycobacterial, bacterial and fungal strains. The substantial differences in in silico calculated properties (hydrogen-bond pattern analysis, molecular electrostatic potential, HOMO and LUMO) can justify the differences in biological activities between N-pyrazinylbenzamides and N-phenylpyrazine-2-carboxamides.
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Affiliation(s)
- Jan Zitko
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Alžběta Mindlová
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Ondřej Valášek
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Ondřej Jand'ourek
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Pavla Paterová
- Department of Clinical Microbiology, University Hospital, Sokolská 581, Hradec Králové 500 05, Czech Republic.
| | - Jiří Janoušek
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Klára Konečná
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
| | - Martin Doležal
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, Hradec Králové 500 05, Czech Republic.
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16
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Galal AMF, Soltan MM, Ahmed ER, Hanna AG. Synthesis and biological evaluation of novel 5-chloro- N-(4-sulfamoylbenzyl) salicylamide derivatives as tubulin polymerization inhibitors. MEDCHEMCOMM 2018; 9:1511-1528. [PMID: 30288225 PMCID: PMC6148682 DOI: 10.1039/c8md00214b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 07/15/2018] [Indexed: 12/28/2022]
Abstract
A novel series of sulfonamide derivatives, coupled with a salicylamide scaffold, was designed and synthesized. The structures of the synthesized compounds were established using 1H NMR, 13C NMR and high-resolution mass spectroscopy. The synthesized compounds were tested in vitro against five types of human cell lines. Two were breast adenocarcinoma, including the hormone-dependent MCF-7 and the hormone-independent MDA-MB-231. The others were the colorectal adenocarcinoma Caco-2, the carcinoma HCT-116 and the immortalized retinal-pigmented epithelium, hTERT-RPE1. Nine sulfonamides were able to inhibit the growth of the four tested cancer cells. Compound 33 was the most active against the selected colon cancer (Caco-2 and HCT-116) subtypes, while compound 24 showed the best efficacy against the examined breast cancer (MCF-7 and MDA-MB-231) cells. The selectivity index introduced compounds 24 and 33 as having the best selectivity among the breast and colon subtypes, respectively. In vitro tubulin polymerization experiments and flow cytometric assays showed that compounds 24 and 33 led to cell cycle arrest at the G2/M phase in a dose-dependent manner by effectively inhibiting tubulin polymerization. Furthermore, the results of the molecular docking studies indicate that this class of compounds can bind to the colchicine-binding site of tubulin.
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Affiliation(s)
- Alaaeldin M F Galal
- Chemistry of Natural Compounds Department , Pharmaceutical and Drug Industries Research Division , National Research Centre , 33 El Bohouth St. (former El Tahir St.) , Dokki , Giza , 12622 Egypt .
| | - Maha M Soltan
- Biology unit , Central Laboratory for Pharmaceutical and Drug Industries Research Division , Chemistry of Medicinal Plants Department , Pharmaceutical and Drug Industries Research Division , National Research Centre , 33 El Bohouth St. 33 , Dokki , Giza 12622 , Egypt
| | - Esam R Ahmed
- Confirmatory Diagnostic unit , Vacsera , Giza , Egypt
| | - Atef G Hanna
- Chemistry of Natural Compounds Department , Pharmaceutical and Drug Industries Research Division , National Research Centre , 33 El Bohouth St. (former El Tahir St.) , Dokki , Giza , 12622 Egypt .
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17
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Mycobacterium abscessus Complex Cutaneous Infection. CURRENT TROPICAL MEDICINE REPORTS 2018. [DOI: 10.1007/s40475-018-0151-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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18
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Castro PP, Campos DL, Pavan FR, Amarante GW. Dual‐protected amino acid derivatives as new antitubercular agents. Chem Biol Drug Des 2018; 92:1576-1580. [DOI: 10.1111/cbdd.13315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Pedro P. Castro
- Department of ChemistryFederal University of Juiz de Fora Minas Gerais Brazil
| | - Débora L. Campos
- Department of Biological SciencesSchool of Pharmaceutical ScienceSão Paulo State University Araraquara São Paulo Brazil
| | - Fernando R. Pavan
- Department of Biological SciencesSchool of Pharmaceutical ScienceSão Paulo State University Araraquara São Paulo Brazil
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19
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Wu ML, Aziz DB, Dartois V, Dick T. NTM drug discovery: status, gaps and the way forward. Drug Discov Today 2018; 23:1502-1519. [PMID: 29635026 DOI: 10.1016/j.drudis.2018.04.001] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/09/2018] [Accepted: 04/03/2018] [Indexed: 12/22/2022]
Abstract
Incidence of pulmonary diseases caused by non-tuberculous mycobacteria (NTM), relatives of Mycobacterium tuberculosis, is increasing at an alarming rate, surpassing tuberculosis in many countries. Current chemotherapies require long treatment times and the clinical outcomes are often disappointing. There is an urgent medical need to discover and develop new, more-efficacious anti-NTM drugs. In this review, we summarize the current status of NTM drug development, and highlight knowledge gaps and scientific obstacles in NTM drug discovery. We propose strategies to reduce biological uncertainties and to begin to populate a NTM drug pipeline with attractive leads and drug candidates.
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Affiliation(s)
- Mu-Lu Wu
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore
| | - Dinah B Aziz
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore
| | - Véronique Dartois
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, 225 Warren Street, Newark, NJ 07103, USA
| | - Thomas Dick
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, 225 Warren Street, Newark, NJ 07103, USA.
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20
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Gupta R, Netherton M, Byrd TF, Rohde KH. Reporter-Based Assays for High-Throughput Drug Screening against Mycobacterium abscessus. Front Microbiol 2017; 8:2204. [PMID: 29176967 PMCID: PMC5687050 DOI: 10.3389/fmicb.2017.02204] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 10/26/2017] [Indexed: 12/18/2022] Open
Abstract
Mycobacterium abscessus is a non-tuberculous mycobacterium that causes pulmonary and non-pulmonary infections. M. abscessus is resistant to many chemotherapeutic agents and the current treatment options show poor clinical outcomes. Thus, there is a dire need to find new antimicrobials effective at killing M. abscessus. Screening drug libraries to identify potential antimicrobials has been impeded by the lack of validated HTS assays for M. abscessus. In this study, we developed two 384-well high-throughput screening assays using fluorescent and bioluminescent reporter strains of M. abscessus for drug discovery. Optimization of inoculum size, incubation time and the volume-per-well based on Z-factor and signal intensity yielded two complementary, robust tools for M. abscessus drug discovery with Z-factor > 0.8. The MIC of known drugs, amikacin and clarithromycin, as determined by bioluminescence was in agreement with the published MIC values. A proof-of-concept screen of 2,093 natural product-inspired compounds was conducted using the 384-well bioluminescent assay to identify novel scaffolds active against M. abscessus. Five active "hit" compounds identified in this pilot screen were confirmed and characterized by a CFU assay and MIC determination. Overall, we developed and validated a 384-well screen that offers simple, sensitive and fast screening of compounds for activity against this emerging pathogen. To our knowledge, this is the first reporter-based high-throughput screening study aimed at M. abscessus drug discovery.
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Affiliation(s)
- Rashmi Gupta
- Division of Immunity and Pathogenesis, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
| | - Mandy Netherton
- Division of Immunity and Pathogenesis, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
| | - Thomas F Byrd
- Division of Infectious Diseases, Department of Internal Medicine, The University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Kyle H Rohde
- Division of Immunity and Pathogenesis, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States
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21
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Kumar V, Patel S, Jain R. New structural classes of antituberculosis agents. Med Res Rev 2017; 38:684-740. [DOI: 10.1002/med.21454] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 04/03/2017] [Accepted: 05/02/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Vajinder Kumar
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; S.A.S. Nagar Punjab India
- Present address: Department of Chemistry; Akal University; Talwandi Sabo Punjab 151 302 India
| | - Sanjay Patel
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; S.A.S. Nagar Punjab India
| | - Rahul Jain
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; S.A.S. Nagar Punjab India
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22
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Baranyai Z, Krátký M, Vosátka R, Szabó E, Senoner Z, Dávid S, Stolaříková J, Vinšová J, Bősze S. In vitro biological evaluation of new antimycobacterial salicylanilide-tuftsin conjugates. Eur J Med Chem 2017; 133:152-173. [PMID: 28384546 DOI: 10.1016/j.ejmech.2017.03.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/17/2017] [Accepted: 03/22/2017] [Indexed: 11/18/2022]
Abstract
Tuberculosis is caused by Mycobacterium tuberculosis, an intracellular pathogen that can survive in host cells, mainly in macrophages. An increase of multidrug-resistant tuberculosis qualifies this infectious disease as a major public health problem worldwide. The cellular uptake of the antimycobacterial agents by infected host cells is limited. Our approach is to enhance the cellular uptake of the antituberculars by target cell-directed delivery using drug-peptide conjugates to achieve an increased intracellular efficacy. In this study, salicylanilide derivatives (2-hydroxy-N-phenylbenzamides) with remarkable antimycobacterial activity were conjugated to macrophage receptor specific tuftsin based peptide carriers through oxime bond directly or by insertion of a GFLG tetrapeptide spacer. We have found that the in vitro antimycobacterial activity of the salicylanilides against M. tuberculosis H37Rv is preserved in the conjugates. While the free drug was ineffective on infected macrophage model, the conjugates were active against the intracellular bacteria. The fluorescently labelled peptide carriers that were modified with different fatty acid side chains showed outstanding cellular uptake rate to the macrophage model cells. The conjugation of the salicylanilides to tuftsin based carriers reduced or abolished the in vitro cytostatic activity of the free drugs with the exception of the palmitoylated conjugates. The conjugates degraded in the presence of rat liver lysosomal homogenate leading to the formation of an oxime bond-linked salicylanilide-amino acid fragment as the smallest active metabolite.
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Affiliation(s)
- Zsuzsa Baranyai
- MTA-ELTE Research Group of Peptide Chemistry, Pázmány Péter sétány 1/A, P.O. Box 32, 1518, H-1117 Budapest 112, Hungary.
| | - Martin Krátký
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Rudolf Vosátka
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Eleonóra Szabó
- Laboratory of Bacteriology, Korányi National Institute for Tuberculosis and Respiratory Medicine, Pihenő út 1, Budapest H-1122, Hungary.
| | - Zsuzsanna Senoner
- Laboratory of Bacteriology, Korányi National Institute for Tuberculosis and Respiratory Medicine, Pihenő út 1, Budapest H-1122, Hungary.
| | - Sándor Dávid
- MTA-ELTE Research Group of Peptide Chemistry, Pázmány Péter sétány 1/A, P.O. Box 32, 1518, H-1117 Budapest 112, Hungary; Laboratory of Bacteriology, Korányi National Institute for Tuberculosis and Respiratory Medicine, Pihenő út 1, Budapest H-1122, Hungary
| | - Jiřina Stolaříková
- Laboratory for Mycobacterial Diagnostics and Tuberculosis, Regional Institute of Public Health in Ostrava, Partyzánské náměstí 7, 702 00 Ostrava, Czech Republic.
| | - Jarmila Vinšová
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Pázmány Péter sétány 1/A, P.O. Box 32, 1518, H-1117 Budapest 112, Hungary.
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23
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Comparative analysis of internalisation, haemolytic, cytotoxic and antibacterial effect of membrane-active cationic peptides: aspects of experimental setup. Amino Acids 2017; 49:1053-1067. [PMID: 28314993 DOI: 10.1007/s00726-017-2402-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/25/2017] [Indexed: 12/20/2022]
Abstract
Cationic peptides proved fundamental importance as pharmaceutical agents and/or drug carrier moieties functioning in cellular processes. The comparison of the in vitro activity of these peptides is an experimental challenge and a combination of different methods, such as cytotoxicity, internalisation rate, haemolytic and antibacterial effect, is necessary. At the same time, several issues need to be addressed as the assay conditions have a great influence on the measured biological effects and the experimental setup needs to be optimised. Therefore, critical comparison of results from different assays using representative examples of cell penetrating and antimicrobial peptides was performed and optimal test conditions were suggested. Our main goal was to identify carrier peptides for drug delivery systems of antimicrobial drug candidates. Based on the results of internalisation, haemolytic, cytotoxic and antibacterial activity assays, a classification of cationic peptides is advocated. We found eight promising carrier peptides with good penetration ability of which Penetratin, Tat, Buforin and Dhvar4 peptides showed low adverse haemolytic effect. Penetratin, Transportan, Dhvar4 and the hybrid CM15 peptide had the most potent antibacterial activity on Streptococcus pneumoniae (MIC lower than 1.2 μM) and Transportan was effective against Mycobacterium tuberculosis as well. The most selective peptide was the Penetratin, where the effective antimicrobial concentration on pneumococcus was more than 250 times lower than the HC50 value. Therefore, these peptides and their analogues will be further investigated as drug delivery systems for antimicrobial agents.
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24
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Avalos-Alanís FG, Hernández-Fernández E, Carranza-Rosales P, López-Cortina S, Hernández-Fernández J, Ordóñez M, Guzmán-Delgado NE, Morales-Vargas A, Velázquez-Moreno VM, Santiago-Mauricio MG. Synthesis, antimycobacterial and cytotoxic activity of α,β-unsaturated amides and 2,4-disubstituted oxazoline derivatives. Bioorg Med Chem Lett 2017; 27:821-825. [PMID: 28117200 DOI: 10.1016/j.bmcl.2017.01.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/08/2017] [Accepted: 01/09/2017] [Indexed: 02/02/2023]
Abstract
The synthesis of six α,β,-unsaturated amides and six 2,4-disubstituted oxazolines derivatives and their evaluation against two Mycobacterium tuberculosis strains (sensitive H37Rv and a resistant clinical isolate) is reported. 2,4-Disubstituted oxazolines (S)-3b,d,e were the most active in the sensitive strain with a MIC of 14.2, 13.6 and 10.8μM, respectively, and the compounds (S)-3d,f were the most active against resistant strain with a MIC of 6.8 and 7.4μM. The ex-vivo evaluation of hepatotoxicity on precision-cut rat liver slices was also tested for the α,β-unsaturated amides (S)-2b and (S)-2d,f and for the oxazolines (S)-3b and (S)-3d,f at different concentrations (5, 15 and 30μg/mL). The results indicate that these compounds possess promising antimycobacterial activity and at the same time are not hepatotoxic. These findings open the possibility for development of new drugs against tuberculosis.
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Affiliation(s)
- Francisco G Avalos-Alanís
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba s/n, Ciudad Universitaria, 66400 San Nicolás de los Garza, Nuevo León, Mexico
| | - Eugenio Hernández-Fernández
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba s/n, Ciudad Universitaria, 66400 San Nicolás de los Garza, Nuevo León, Mexico.
| | - Pilar Carranza-Rosales
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, Mexico.
| | - Susana López-Cortina
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba s/n, Ciudad Universitaria, 66400 San Nicolás de los Garza, Nuevo León, Mexico
| | - Jorge Hernández-Fernández
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba s/n, Ciudad Universitaria, 66400 San Nicolás de los Garza, Nuevo León, Mexico
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
| | - Nancy E Guzmán-Delgado
- Unidad Médica de Alta Especialidad 34, Instituto Mexicano del Seguro Social, 64730 Monterrey, Nuevo León, Mexico
| | | | | | - María G Santiago-Mauricio
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, Mexico
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