1
|
Queme B, Braisted JC, Dranchak P, Inglese J. qHTSWaterfall: 3-dimensional visualization software for quantitative high-throughput screening (qHTS) data. J Cheminform 2023; 15:39. [PMID: 37004072 PMCID: PMC10064508 DOI: 10.1186/s13321-023-00717-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 03/26/2023] [Indexed: 04/03/2023] Open
Abstract
High throughput screening (HTS) is widely used in drug discovery and chemical biology to identify and characterize agents having pharmacologic properties often by evaluation of large chemical libraries. Standard HTS data can be simply plotted as an x-y graph usually represented as % activity of a compound tested at a single concentration vs compound ID, whereas quantitative HTS (qHTS) data incorporates a third axis represented by concentration. By virtue of the additional data points arising from the compound titration and the incorporation of logistic fit parameters that define the concentration-response curve, such as EC50 and Hill slope, qHTS data has been challenging to display on a single graph. Here we provide a flexible solution to the rapid plotting of complete qHTS data sets to produce a 3-axis plot we call qHTS Waterfall Plots. The software described here can be generally applied to any 3-axis dataset and is available as both an R package and an R shiny application.
Collapse
Affiliation(s)
- Bryan Queme
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, 20850, USA
| | - John C Braisted
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, 20850, USA.
| | - Patricia Dranchak
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, 20850, USA
| | - James Inglese
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, 20850, USA
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| |
Collapse
|
2
|
Dranchak PK, Oliphant E, Queme B, Lamy L, Wang Y, Huang R, Xia M, Tao D, Inglese J. In vivo quantitative high-throughput screening for drug discovery and comparative toxicology. Dis Model Mech 2023; 16:dmm049863. [PMID: 36786055 PMCID: PMC10067442 DOI: 10.1242/dmm.049863] [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: 08/26/2022] [Accepted: 02/01/2023] [Indexed: 02/15/2023] Open
Abstract
Quantitative high-throughput screening (qHTS) pharmacologically evaluates chemical libraries for therapeutic uses, toxicological risk and, increasingly, for academic probe discovery. Phenotypic high-throughput screening assays interrogate molecular pathways, often relying on cell culture systems, historically less focused on multicellular organisms. Caenorhabditis elegans has served as a eukaryotic model organism for human biology by virtue of genetic conservation and experimental tractability. Here, a paradigm enabling C. elegans qHTS using 384-well microtiter plate laser-scanning cytometry is described, in which GFP-expressing organisms revealing phenotype-modifying structure-activity relationships guide subsequent life-stage and proteomic analyses, and Escherichia coli bacterial ghosts, a non-replicating nutrient source, allow compound exposures over two life cycles, mitigating bacterial overgrowth complications. We demonstrate the method with libraries of anti-infective agents, or substances of toxicological concern. Each was tested in seven-point titration to assess the feasibility of nematode-based in vivo qHTS, and examples of follow-up strategies were provided to study organism-based chemotype selectivity and subsequent network perturbations with a physiological impact. We anticipate that this qHTS approach will enable analysis of C. elegans orthologous phenotypes of human pathologies to facilitate drug library profiling for a range of therapeutic indications.
Collapse
Affiliation(s)
- Patricia K. Dranchak
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Erin Oliphant
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Bryan Queme
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Laurence Lamy
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Yuhong Wang
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Ruili Huang
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Menghang Xia
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Dingyin Tao
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - James Inglese
- Department of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
- Metabolic Medicine Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20817, USA
| |
Collapse
|
3
|
Synthetic drives for useful drug molecules through organocatalytic methods. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The treatment of various pathological conditions in human beings involves the use of safe and efficacious drug substances. But there are different complications associated with the treatment of various disease states including drug resistance, adverse drug reactions, toxicity, etc. To minimize these problems, there is an urgent need to develop new therapeutics with suitable pharmacokinetic and pharmacodynamic properties. So, the organocatalytic methods are emerged as a potential synthetic tool to accelerate the design of new drug candidates with improved physicochemical and pharmacological properties, selectivity, and efficiency for the treatment of life-threatening diseases. Organocatalytic reactions refer to the chemical reaction that is accelerated by organic catalysts instead of using organometallic catalysts. Organocatalysts are more advantageous in comparison to metallic catalysts because organocatalysts are cost-effective, stable, efficient, non-toxic, readily available, and easy to handle. In addition to this, the organocatalysis method involves an eco-friendly reaction by minimizing the formation of by-products and reducing the chemical hazards. Organocatalysts are categorized into four classes such as Lewis acids, Lewis bases, Bronsted acids, and Bronsted bases. These catalysts are generally involved in various reactions mechanisms such as Aldol reaction, Diels–Alder reactions, Michael Addition and Knoevenagal reactions, etc. The utility of organocatalyst in synthetic chemistry results in the development of medicinally active compounds with diverse structural features.
Collapse
|
4
|
Durrant DE, Smith EA, Goncharova EI, Sharma N, Alexander PA, Stephen AG, Henrich CJ, Morrison DK. Development of a High-throughput NanoBRET Screening Platform to Identify Modulators of the RAS/RAF Interaction. Mol Cancer Ther 2021; 20:1743-1754. [PMID: 34158349 PMCID: PMC8419108 DOI: 10.1158/1535-7163.mct-21-0175] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/24/2021] [Accepted: 06/15/2021] [Indexed: 01/09/2023]
Abstract
Activating mutations in RAS are found in approximately 30% of human cancers, resulting in the delivery of a persistent signal to critical downstream effectors that drive tumorigenesis. RAS-driven malignancies respond poorly to conventional cancer treatments and inhibitors that target RAS directly are limited; therefore, the identification of new strategies and/or drugs to disrupt RAS signaling in tumor cells remains a pressing therapeutic need. Taking advantage of the live-cell bioluminescence resonance energy transfer (BRET) methodology, we describe the development of a NanoBRET screening platform to identify compounds that modulate binding between activated KRAS and the CRAF kinase, an essential effector of RAS that initiates ERK cascade signaling. Using this strategy, libraries containing synthetic compounds, targeted inhibitors, purified natural products, and natural product extracts were evaluated. These efforts resulted in the identification of compounds that inhibit RAS/RAF binding and in turn suppress RAS-driven ERK activation, but also compounds that have the deleterious effect of enhancing the interaction to upregulate pathway signaling. Among the inhibitor hits identified, the majority were compounds derived from natural products, including ones reported to alter KRAS nanoclustering (ophiobolin A), to impact RAF function (HSP90 inhibitors and ROS inducers) as well as some with unknown targets and activities. These findings demonstrate the potential for this screening platform in natural product drug discovery and in the development of new therapeutic agents to target dysregulated RAS signaling in human disease states such as cancer.
Collapse
Affiliation(s)
- David E Durrant
- Laboratory of Cell and Developmental Signaling, NCI, Frederick, Maryland
| | - Emily A Smith
- Molecular Targets Program, Center of Cancer Research, NCI, Frederick, Maryland
- Basic Research Program, Leidos Biomedical Research, Inc., Frederick, Maryland
| | - Ekaterina I Goncharova
- Molecular Targets Program, Center of Cancer Research, NCI, Frederick, Maryland
- Biomedical Informatics and Data Science Directorate, NCI, Frederick, Maryland
| | - Nirmala Sharma
- Molecular Targets Program, Center of Cancer Research, NCI, Frederick, Maryland
| | - Patrick A Alexander
- NCI RAS Initiative, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, Maryland
| | - Andrew G Stephen
- NCI RAS Initiative, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, Maryland
| | - Curtis J Henrich
- Molecular Targets Program, Center of Cancer Research, NCI, Frederick, Maryland.
- Basic Research Program, Leidos Biomedical Research, Inc., Frederick, Maryland
| | - Deborah K Morrison
- Laboratory of Cell and Developmental Signaling, NCI, Frederick, Maryland.
| |
Collapse
|
5
|
Iyer KR, Camara K, Daniel-Ivad M, Trilles R, Pimentel-Elardo SM, Fossen JL, Marchillo K, Liu Z, Singh S, Muñoz JF, Kim SH, Porco JA, Cuomo CA, Williams NS, Ibrahim AS, Edwards JE, Andes DR, Nodwell JR, Brown LE, Whitesell L, Robbins N, Cowen LE. An oxindole efflux inhibitor potentiates azoles and impairs virulence in the fungal pathogen Candida auris. Nat Commun 2020; 11:6429. [PMID: 33353950 PMCID: PMC7755909 DOI: 10.1038/s41467-020-20183-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/12/2020] [Indexed: 12/11/2022] Open
Abstract
Candida auris is an emerging fungal pathogen that exhibits resistance to multiple drugs, including the most commonly prescribed antifungal, fluconazole. Here, we use a combinatorial screening approach to identify a bis-benzodioxolylindolinone (azoffluxin) that synergizes with fluconazole against C. auris. Azoffluxin enhances fluconazole activity through the inhibition of efflux pump Cdr1, thus increasing intracellular fluconazole levels. This activity is conserved across most C. auris clades, with the exception of clade III. Azoffluxin also inhibits efflux in highly azole-resistant strains of Candida albicans, another human fungal pathogen, increasing their susceptibility to fluconazole. Furthermore, azoffluxin enhances fluconazole activity in mice infected with C. auris, reducing fungal burden. Our findings suggest that pharmacologically targeting Cdr1 in combination with azoles may be an effective strategy to control infection caused by azole-resistant isolates of C. auris.
Collapse
Affiliation(s)
- Kali R Iyer
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Kaddy Camara
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA, USA
- Clark+Elbing LLP, Boston, MA, USA
| | | | - Richard Trilles
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA, USA
| | | | - Jen L Fossen
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, WI, USA
| | - Karen Marchillo
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, WI, USA
| | - Zhongle Liu
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Shakti Singh
- Division of Infectious Disease, The Lundquist Institute for Biomedical Innovation Los Angeles Biomedical Research Institute at Harbor-University of California, Los Angeles (UCLA) Medical Center, Torrance, CA, USA
| | - José F Muñoz
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Sang Hu Kim
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - John A Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA, USA
| | - Christina A Cuomo
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Noelle S Williams
- Department of Biochemistry, University of Texas Southwestern Medical School, Dallas, TX, USA
| | - Ashraf S Ibrahim
- Division of Infectious Disease, The Lundquist Institute for Biomedical Innovation Los Angeles Biomedical Research Institute at Harbor-University of California, Los Angeles (UCLA) Medical Center, Torrance, CA, USA
- David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - John E Edwards
- Division of Infectious Disease, The Lundquist Institute for Biomedical Innovation Los Angeles Biomedical Research Institute at Harbor-University of California, Los Angeles (UCLA) Medical Center, Torrance, CA, USA
- David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - David R Andes
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, WI, USA
| | - Justin R Nodwell
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Lauren E Brown
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, Boston, MA, USA
| | - Luke Whitesell
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Nicole Robbins
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Leah E Cowen
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.
| |
Collapse
|
6
|
Klus NJ, Kapadia K, McDonald P, Roy A, Frankowski KJ, Muma NA, Aubé J. Discovery of sultam-containing small-molecule disruptors of the huntingtin-calmodulin protein-protein interaction. Med Chem Res 2020; 29:1187-1198. [PMID: 33642842 PMCID: PMC7906539 DOI: 10.1007/s00044-020-02583-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 05/30/2020] [Indexed: 11/26/2022]
Abstract
The aberrant protein-protein interaction between calmodulin and mutant huntingtin protein in Huntington's disease patients has been found to contribute to Huntington's disease progression. A high-throughput screen for small molecules capable of disrupting this interaction revealed a sultam series as potent small-molecule disruptors. Diversification of the sultam scaffold afforded a set of 24 analogs or further evaluation. Several structure-activity trends within the analog set were found, most notably a negligible effect of absolute stereochemistry and a strong beneficial correlation with electron-withdrawing aromatic substituents. The most promising analogs were profiled for off-target effects at relevant kinases and, ultimately, one candidate molecule was evaluated for neuroprotection in a neuronal cell model of Huntington's disease.
Collapse
Affiliation(s)
- Nicholas J. Klus
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, Chapel Hill, NC 27599, USA
| | - Khushboo Kapadia
- Department of Pharmacology and Toxicology, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA
| | - Peter McDonald
- University of Kansas High-Throughput Screening Laboratory, University of Kansas, 2034 Becker Drive, Lawrence, KS 66047, USA
| | - Anuradha Roy
- University of Kansas High-Throughput Screening Laboratory, University of Kansas, 2034 Becker Drive, Lawrence, KS 66047, USA
| | - Kevin J. Frankowski
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, Chapel Hill, NC 27599, USA
| | - Nancy A. Muma
- Department of Pharmacology and Toxicology, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA
| | - Jeffrey Aubé
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, Chapel Hill, NC 27599, USA
| |
Collapse
|
7
|
Heravi MM, Janati F, Zadsirjan V. Applications of Knoevenagel condensation reaction in the total synthesis of natural products. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02586-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
8
|
Translation Inhibition by Rocaglates Activates a Species-Specific Cell Death Program in the Emerging Fungal Pathogen Candida auris. mBio 2020; 11:mBio.03329-19. [PMID: 32156828 PMCID: PMC7064782 DOI: 10.1128/mbio.03329-19] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Emergence of the fungal pathogen Candida auris has ignited intrigue and alarm within the medical community and the public at large. This pathogen is unusually resistant to antifungals, threatening to overwhelm current management options. By screening a library of structurally diverse molecules, we found that C. auris is surprisingly sensitive to translation inhibition by a class of compounds known as rocaglates (also known as flavaglines). Despite the high level of conservation across fungi in their protein synthesis machinery, these compounds inhibited translation initiation and activated a cell death program in C. auris but not in its relative Candida albicans. Our findings highlight a surprising divergence across the cell death programs operating in Candida species and underscore the need to understand the specific biology of a pathogen in attempting to develop more-effective treatments against it. Fungal infections are a major contributor to infectious disease-related deaths worldwide. Recently, global emergence of the fungal pathogen Candida auris has caused considerable concern because most C. auris isolates are resistant to fluconazole, the most commonly administered antifungal, and some isolates are resistant to drugs from all three major antifungal classes. To identify novel agents with bioactivity against C. auris, we screened 2,454 compounds from a diversity-oriented synthesis collection. Of the five hits identified, most shared a common rocaglate core structure and displayed fungicidal activity against C. auris. These rocaglate hits inhibited translation in C. auris but not in its pathogenic relative Candida albicans. Species specificity was contingent on variation at a single amino acid residue in Tif1, a fungal member of the eukaryotic initiation factor 4A (eIF4A) family of translation initiation factors known to be targeted by rocaglates. Rocaglate-mediated inhibition of translation in C. auris activated a cell death program characterized by loss of mitochondrial membrane potential, increased caspase-like activity, and disrupted vacuolar homeostasis. In a rocaglate-sensitized C. albicans mutant engineered to express translation initiation factor 1 (Tif1) with the variant amino acid that we had identified in C. auris, translation was inhibited but no programmed cell death phenotypes were observed. This surprising finding suggests divergence between these related fungal pathogens in their pathways of cellular responses to translation inhibition. From a therapeutic perspective, the chemical biology that we have uncovered reveals species-specific vulnerability in C. auris and identifies a promising target for development of new, mechanistically distinct antifungals in the battle against this emerging pathogen.
Collapse
|
9
|
Dangi P, Jain R, Mamidala R, Sharma V, Agarwal S, Bathula C, Thirumalachary M, Sen S, Singh S. Natural Product Inspired Novel Indole based Chiral Scaffold Kills Human Malaria Parasites via Ionic Imbalance Mediated Cell Death. Sci Rep 2019; 9:17785. [PMID: 31780808 PMCID: PMC6882913 DOI: 10.1038/s41598-019-54339-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 06/28/2019] [Indexed: 02/06/2023] Open
Abstract
Natural products offer an abundant source of diverse novel scaffolds that inspires development of next generation anti-malarials. With this vision, a library of scaffolds inspired by natural biologically active alkaloids was synthesized from chiral bicyclic lactams with steps/scaffold ratio of 1.7:1. On evaluation of library of scaffolds for their growth inhibitory effect against malaria parasite we found one scaffold with IC50 in low micro molar range. It inhibited parasite growth via disruption of Na+ homeostasis. P-type ATPase, PfATP4 is responsible for maintaining parasite Na+ homeostasis and is a good target for anti-malarials. Molecular docking with our scaffold showed that it fits well in the binding pocket of PfATP4. Moreover, inhibition of Na+-dependent ATPase activity by our potent scaffold suggests that it targets parasite by inhibiting PfATP4, leading to ionic imbalance. However how ionic imbalance attributes to parasite's death is unclear. We show that ionic imbalance caused by scaffold 7 induces autophagy that leads to onset of apoptosis in the parasite evident by the loss of mitochondrial membrane potential (ΔΨm) and DNA degradation. Our study provides a novel strategy for drug discovery and an insight into the molecular mechanism of ionic imbalance mediated death in malaria parasite.
Collapse
Affiliation(s)
- Poonam Dangi
- Department of Life Science, Shiv Nadar University, Gautam Buddha Nagar, 201314, India
| | - Ravi Jain
- Department of Life Science, Shiv Nadar University, Gautam Buddha Nagar, 201314, India
| | | | - Vijeta Sharma
- Department of Life Science, Shiv Nadar University, Gautam Buddha Nagar, 201314, India
| | - Shalini Agarwal
- International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Chandramohan Bathula
- Department of Chemistry, Shiv Nadar University, Gautam Buddha Nagar, 201314, India
| | - M Thirumalachary
- Jawaharlal Technological University, Kukatpally, 500072, Hyderabad, India
| | - Subhabrata Sen
- Department of Chemistry, Shiv Nadar University, Gautam Buddha Nagar, 201314, India
| | - Shailja Singh
- Department of Life Science, Shiv Nadar University, Gautam Buddha Nagar, 201314, India.
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
10
|
High-throughput Screening in Larval Zebrafish Identifies Novel Potent Sedative-hypnotics. Anesthesiology 2019; 129:459-476. [PMID: 29894316 DOI: 10.1097/aln.0000000000002281] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
WHAT WE ALREADY KNOW ABOUT THIS TOPIC WHAT THIS ARTICLE TELLS US THAT IS NEW: BACKGROUND:: Many general anesthetics were discovered empirically, but primary screens to find new sedative-hypnotics in drug libraries have not used animals, limiting the types of drugs discovered. The authors hypothesized that a sedative-hypnotic screening approach using zebrafish larvae responses to sensory stimuli would perform comparably to standard assays, and efficiently identify new active compounds. METHODS The authors developed a binary outcome photomotor response assay for zebrafish larvae using a computerized system that tracked individual motions of up to 96 animals simultaneously. The assay was validated against tadpole loss of righting reflexes, using sedative-hypnotics of widely varying potencies that affect various molecular targets. A total of 374 representative compounds from a larger library were screened in zebrafish larvae for hypnotic activity at 10 µM. Molecular mechanisms of hits were explored in anesthetic-sensitive ion channels using electrophysiology, or in zebrafish using a specific reversal agent. RESULTS Zebrafish larvae assays required far less drug, time, and effort than tadpoles. In validation experiments, zebrafish and tadpole screening for hypnotic activity agreed 100% (n = 11; P = 0.002), and potencies were very similar (Pearson correlation, r > 0.999). Two reversible and potent sedative-hypnotics were discovered in the library subset. CMLD003237 (EC50, ~11 µM) weakly modulated γ-aminobutyric acid type A receptors and inhibited neuronal nicotinic receptors. CMLD006025 (EC50, ~13 µM) inhibited both N-methyl-D-aspartate and neuronal nicotinic receptors. CONCLUSIONS Photomotor response assays in zebrafish larvae are a mechanism-independent platform for high-throughput screening to identify novel sedative-hypnotics. The variety of chemotypes producing hypnosis is likely much larger than currently known.
Collapse
|
11
|
Manier S, Huynh D, Shen YJ, Zhou J, Yusufzai T, Salem KZ, Ebright RY, Shi J, Park J, Glavey SV, Devine WG, Liu CJ, Leleu X, Quesnel B, Roche-Lestienne C, Snyder JK, Brown LE, Gray N, Bradner J, Whitesell L, Porco JA, Ghobrial IM. Inhibiting the oncogenic translation program is an effective therapeutic strategy in multiple myeloma. Sci Transl Med 2017; 9:eaal2668. [PMID: 28490664 PMCID: PMC5718051 DOI: 10.1126/scitranslmed.aal2668] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 03/16/2017] [Indexed: 12/23/2022]
Abstract
Multiple myeloma (MM) is a frequently incurable hematological cancer in which overactivity of MYC plays a central role, notably through up-regulation of ribosome biogenesis and translation. To better understand the oncogenic program driven by MYC and investigate its potential as a therapeutic target, we screened a chemically diverse small-molecule library for anti-MM activity. The most potent hits identified were rocaglate scaffold inhibitors of translation initiation. Expression profiling of MM cells revealed reversion of the oncogenic MYC-driven transcriptional program by CMLD010509, the most promising rocaglate. Proteome-wide reversion correlated with selective depletion of short-lived proteins that are key to MM growth and survival, most notably MYC, MDM2, CCND1, MAF, and MCL-1. The efficacy of CMLD010509 in mouse models of MM confirmed the therapeutic relevance of these findings in vivo and supports the feasibility of targeting the oncogenic MYC-driven translation program in MM with rocaglates.
Collapse
Affiliation(s)
- Salomon Manier
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
- Department of Hematology, Lille Hospital, 59000 Lille, France
- INSERM UMR-S 1172, University of Lille 2, 59000 Lille, France
| | - Daisy Huynh
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Yu J Shen
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Jia Zhou
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Timur Yusufzai
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Karma Z Salem
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Richard Y Ebright
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Jiantao Shi
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Jihye Park
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Siobhan V Glavey
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - William G Devine
- Boston University Center for Molecular Discovery, Boston, MA 02215, USA
| | - Chia-Jen Liu
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Xavier Leleu
- Department of Hematology, University Hospital of Poitiers, 86021 Poitiers, France
| | - Bruno Quesnel
- INSERM UMR-S 1172, University of Lille 2, 59000 Lille, France
| | | | - John K Snyder
- Boston University Center for Molecular Discovery, Boston, MA 02215, USA
| | - Lauren E Brown
- Boston University Center for Molecular Discovery, Boston, MA 02215, USA
| | - Nathanael Gray
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - James Bradner
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Luke Whitesell
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - John A Porco
- Boston University Center for Molecular Discovery, Boston, MA 02215, USA
| | - Irene M Ghobrial
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
| |
Collapse
|
12
|
Lee YC, Patil S, Golz C, Strohmann C, Ziegler S, Kumar K, Waldmann H. A ligand-directed divergent catalytic approach to establish structural and functional scaffold diversity. Nat Commun 2017; 8:14043. [PMID: 28195128 PMCID: PMC5316858 DOI: 10.1038/ncomms14043] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 11/23/2016] [Indexed: 12/21/2022] Open
Abstract
The selective transformation of different starting materials by different metal catalysts under individually optimized reaction conditions to structurally different intermediates and products is a powerful approach to generate diverse molecular scaffolds. In a more unified albeit synthetically challenging strategy, common starting materials would be exposed to a common metal catalysis, leading to a common intermediate and giving rise to different scaffolds by tuning the reactivity of the metal catalyst through different ligands. Herein we present a ligand-directed synthesis approach for the gold(I)-catalysed cycloisomerization of oxindole-derived 1,6-enynes that affords distinct molecular scaffolds following different catalytic reaction pathways. Varying electronic properties and the steric demand of the gold(I) ligands steers the fate of a common intermediary gold carbene to selectively form spirooxindoles, quinolones or df-oxindoles. Investigation of a synthesized compound collection in cell-based assays delivers structurally novel, selective modulators of the Hedgehog and Wnt signalling pathways, autophagy and of cellular proliferation. Synthetic methods that efficiently construct structurally diverse molecular scaffolds are attractive routes to diversely bioactive molecules. Here the authors report a method whereby common starting materials are converted to structurally and functionally diverse products by changing the catalyst ligand.
Collapse
Affiliation(s)
- Yen-Chun Lee
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, Dortmund 44227, Germany.,Technische Universität Dortmund, Fakultät Chemie, Chemische Biologie, Otto-Hahn-Straße 6, Dortmund 44221, Germany
| | - Sumersing Patil
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, Dortmund 44227, Germany.,Technische Universität Dortmund, Fakultät Chemie, Chemische Biologie, Otto-Hahn-Straße 6, Dortmund 44221, Germany
| | - Christopher Golz
- Technische Universität Dortmund, Fakultät Chemie, Chemische Biologie, Otto-Hahn-Straße 6, Dortmund 44221, Germany
| | - Carsten Strohmann
- Technische Universität Dortmund, Fakultät Chemie, Chemische Biologie, Otto-Hahn-Straße 6, Dortmund 44221, Germany
| | - Slava Ziegler
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, Dortmund 44227, Germany
| | - Kamal Kumar
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, Dortmund 44227, Germany
| | - Herbert Waldmann
- Max-Planck-Institut für Molekulare Physiologie, Abteilung Chemische Biologie, Otto-Hahn-Straße 11, Dortmund 44227, Germany.,Technische Universität Dortmund, Fakultät Chemie, Chemische Biologie, Otto-Hahn-Straße 6, Dortmund 44221, Germany
| |
Collapse
|
13
|
Tomás-Mendivil E, Heinrich CF, Ortuno JC, Starck J, Michelet V. Gold-Catalyzed Access to 1H-Isochromenes: Reaction Development and Mechanistic Insight. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02636] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Eder Tomás-Mendivil
- PSL Research University, Chimie ParisTech-CNRS,
Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France
| | - Clément F. Heinrich
- PSL Research University, Chimie ParisTech-CNRS,
Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France
| | - Jean-Claude Ortuno
- Institut de Recherches
Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Jérôme Starck
- Institut de Recherches
Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Véronique Michelet
- PSL Research University, Chimie ParisTech-CNRS,
Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France
| |
Collapse
|
14
|
Saxena A, Perez F, Krische MJ. Ruthenium(0)-Catalyzed [4+2] Cycloaddition of Acetylenic Aldehydes with α-Ketols: Convergent Construction of Angucycline Ring Systems. Angew Chem Int Ed Engl 2016; 55:1493-7. [PMID: 26663806 PMCID: PMC4718903 DOI: 10.1002/anie.201509646] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/13/2015] [Indexed: 11/09/2022]
Abstract
Ruthenium(0) complexes modified by CyJohnPhos or RuPhos catalyze the successive C-C coupling of acetylenic aldehydes with α-ketols to form [4+2] cycloadducts as single diastereomers. This method enables convergent construction of type II polyketide ring systems of the angucycline class.
Collapse
Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Felix Perez
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA.
| |
Collapse
|
15
|
Saxena A, Perez F, Krische MJ. Ruthenium(0)-Catalyzed [4+2] Cycloaddition of Acetylenic Aldehydes with α-Ketols: Convergent Construction of Angucycline Ring Systems. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509646] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| | - Felix Perez
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| |
Collapse
|
16
|
Tomás-Mendivil E, Starck J, Ortuno JC, Michelet V. Synthesis of Functionalized 1H-Isochromene Derivatives via a Au-Catalyzed Domino Cycloisomerization/Reduction Approach. Org Lett 2015; 17:6126-9. [DOI: 10.1021/acs.orglett.5b03146] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eder Tomás-Mendivil
- Chimie
ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), F-75005 Paris, France
| | - Jérôme Starck
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Jean-Claude Ortuno
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Véronique Michelet
- Chimie
ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), F-75005 Paris, France
| |
Collapse
|
17
|
Cheng KCC, Cao S, Raveh A, MacArthur R, Dranchak P, Chlipala G, Okoneski MT, Guha R, Eastman RT, Yuan J, Schultz PJ, Su XZ, Tamayo-Castillo G, Matainaho T, Clardy J, Sherman DH, Inglese J. Actinoramide A Identified as a Potent Antimalarial from Titration-Based Screening of Marine Natural Product Extracts. JOURNAL OF NATURAL PRODUCTS 2015; 78:2411-2422. [PMID: 26465675 PMCID: PMC4633019 DOI: 10.1021/acs.jnatprod.5b00489] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Methods to identify the bioactive diversity within natural product extracts (NPEs) continue to evolve. NPEs constitute complex mixtures of chemical substances varying in structure, composition, and abundance. NPEs can therefore be challenging to evaluate efficiently with high-throughput screening approaches designed to test pure substances. Here we facilitate the rapid identification and prioritization of antimalarial NPEs using a pharmacologically driven, quantitative high-throughput-screening (qHTS) paradigm. In qHTS each NPE is tested across a concentration range from which sigmoidal response, efficacy, and apparent EC50s can be used to rank order NPEs for subsequent organism reculture, extraction, and fractionation. Using an NPE library derived from diverse marine microorganisms we observed potent antimalarial activity from two Streptomyces sp. extracts identified from thousands tested using qHTS. Seven compounds were isolated from two phylogenetically related Streptomyces species: Streptomyces ballenaensis collected from Costa Rica and Streptomyces bangulaensis collected from Papua New Guinea. Among them we identified actinoramides A and B, belonging to the unusually elaborated nonproteinogenic amino-acid-containing tetrapeptide series of natural products. In addition, we characterized a series of new compounds, including an artifact, 25-epi-actinoramide A, and actinoramides D, E, and F, which are closely related biosynthetic congeners of the previously reported metabolites.
Collapse
Affiliation(s)
- Ken Chih-Chien Cheng
- National Center of Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI 96720, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, C-643, Boston, Massachusetts 021151, USA
| | - Avi Raveh
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - Ryan MacArthur
- National Center of Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850
| | - Patricia Dranchak
- National Center of Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850
| | - George Chlipala
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - Matthew T. Okoneski
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109-2216, USA
- Departments of Medicinal Chemistry, Chemistry, Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - Rajarshi Guha
- National Center of Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850
| | - Richard T. Eastman
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20852, USA
| | - Jing Yuan
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20852, USA
| | - Pamela J. Schultz
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - Xin-zhuan Su
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20852, USA
| | - Giselle Tamayo-Castillo
- Unidad Estrategica de Bioprospección, Instituto Nacional de Biodiversidad (INBio), Santo Domingo de Heredia, Costa Rica & CIPRONA-Escuela de Química, Universidad de Costa Rica, 2060 San Pedro, Costa Rica
| | - Teatulohi Matainaho
- School of Medicine and Health Sciences, University of Papua New Guinea, Boroko, Papua New Guinea
| | - Jon Clardy
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, C-643, Boston, Massachusetts 021151, USA
| | - David H. Sherman
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109-2216, USA
- Departments of Medicinal Chemistry, Chemistry, Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - James Inglese
- National Center of Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850
| |
Collapse
|
18
|
Szostak R, Aubé J, Szostak M. Determination of Structures and Energetics of Small- and Medium-Sized One-Carbon-Bridged Twisted Amides using ab Initio Molecular Orbital Methods: Implications for Amidic Resonance along the C–N Rotational Pathway. J Org Chem 2015; 80:7905-27. [DOI: 10.1021/acs.joc.5b00881] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Jeffrey Aubé
- Division of Chemical
Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| |
Collapse
|
19
|
Tan H, Chen X, Chen H, Liu H, Qiu S. Proline-Catalyzed Knoevenagel Condensation/[4+2] Cycloaddition Cascade Reaction: Application to Formal Synthesis of Averufin. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500559] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
20
|
Winkler M, Maynadier M, Wein S, Lespinasse MA, Boumis G, Miele AE, Vial H, Wong YS. Uncovering new structural insights for antimalarial activity from cost-effective aculeatin-like derivatives. Org Biomol Chem 2015; 13:2064-77. [DOI: 10.1039/c4ob02459a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An expedient synthesis of aculeatin-like analogues results in finding PfTrxR as putative cellular target and a promising new antimalarial chemotype.
Collapse
Affiliation(s)
- Matthias Winkler
- Département de Pharmacochimie Moléculaire
- Univ. Grenoble-Alpes
- CNRS UMR 5063
- CNRS ICMG FR 2607
- F-38041 Grenoble Cedex 9
| | - Marjorie Maynadier
- Laboratory Dynamique des Interactions Membranaires Normales et Pathologiques
- UMR5235
- CNRS
- University Montpellier 2
- 34095 Montpellier
| | - Sharon Wein
- Laboratory Dynamique des Interactions Membranaires Normales et Pathologiques
- UMR5235
- CNRS
- University Montpellier 2
- 34095 Montpellier
| | - Marie-Ange Lespinasse
- Département de Pharmacochimie Moléculaire
- Univ. Grenoble-Alpes
- CNRS UMR 5063
- CNRS ICMG FR 2607
- F-38041 Grenoble Cedex 9
| | - Giovanna Boumis
- Department of Biochemical Sciences
- “Sapienza” University of Rome
- 00185 Rome
- Italy
| | - Adriana E. Miele
- Department of Biochemical Sciences
- “Sapienza” University of Rome
- 00185 Rome
- Italy
| | - Henri Vial
- Laboratory Dynamique des Interactions Membranaires Normales et Pathologiques
- UMR5235
- CNRS
- University Montpellier 2
- 34095 Montpellier
| | - Yung-Sing Wong
- Département de Pharmacochimie Moléculaire
- Univ. Grenoble-Alpes
- CNRS UMR 5063
- CNRS ICMG FR 2607
- F-38041 Grenoble Cedex 9
| |
Collapse
|
21
|
Tan H, Liu H, Chen X, Chen H, Qiu S. Racemic total synthesis of dactyloidin and demethyldactyloidin through the dl-proline-catalyzed Knoevenagel condensation/[4 + 2] cycloaddition cascade. Org Biomol Chem 2015; 13:9977-83. [DOI: 10.1039/c5ob01636c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient approach towards the first racemic total synthesis of dactyloidin (2) and demethyldactyloidin (3) is described.
Collapse
Affiliation(s)
- Haibo Tan
- Program for Natural Product Chemical Biology
- Key Laboratory Plant Resources Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
- Guangzhou 510650
| | - Hongxin Liu
- Program for Natural Product Chemical Biology
- Key Laboratory Plant Resources Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
- Guangzhou 510650
| | - Xinzheng Chen
- School of Chemical Biology and Biotechnology
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- People's Republic of China
| | - Huiyu Chen
- School of Chemical Biology and Biotechnology
- Shenzhen Graduate School of Peking University
- Shenzhen 518055
- People's Republic of China
| | - Shengxiang Qiu
- Program for Natural Product Chemical Biology
- Key Laboratory Plant Resources Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
- Guangzhou 510650
| |
Collapse
|
22
|
Sharma V, Agarwal S, Madurkar SM, Datta G, Dangi P, Dandugudumula R, Sen S, Singh S. Diversity-oriented synthesis and activity evaluation of substituted bicyclic lactams as anti-malarial against Plasmodium falciparum. Malar J 2014; 13:467. [PMID: 25431142 PMCID: PMC4289231 DOI: 10.1186/1475-2875-13-467] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 11/19/2014] [Indexed: 11/23/2022] Open
Abstract
Background Malaria remains the world’s most important devastating parasitic disease. Of the five species of Plasmodium known to infect and cause human malaria, Plasmodium falciparum is the most virulent and responsible for majority of the deaths caused by this disease. Mainstream drug therapy targets the asexual blood stage of the malaria parasite, as the disease symptoms are mainly associated with this stage. The prevalence of malaria parasite strains resistance to existing anti-malarial drugs has made the control of malaria even more challenging and hence the development of a new class of drugs is inevitable. Methods Screening against different drug resistant and sensitive strains of P. falciparum was performed for few bicyclic lactam-based motifs, exhibiting a broad spectrum of activity with low toxicity generated via a focussed library obtained from diversity oriented synthesis (DOS). The synthesis and screening was followed by an in vitro assessment of the possible cytotoxic effect of this class of compounds on malaria parasite. Results The central scaffold a chiral bicyclic lactam (A) and (A’) which were synthesized from (R)-phenylalaninol, levulinic acid and 3-(2-nitrophenyl) levulinic acid respectively. The DOS library was generated from A and from A’, by either direct substitution with o-nitrobenzylbromide at the carbon α- to the amide functionality or by conversion to fused pyrroloquinolines. Upon screening this diverse library for their anti-malarial activity, a dinitro/diamine substituted bicyclic lactam was found to demonstrate exceptional activity of >85% inhibition at 50 μM concentration across different strains of P. falciparum with no toxicity against mammalian cells. Also, loss of mitochondrial membrane potential, mitochondrial functionality and apoptosis was observed in parasite treated with diamine-substituted bicyclic lactams. Conclusions This study unveils a DOS-mediated exploration of small molecules with novel structural motifs that culminates in identifying a potential lead molecule against malaria. In vitro investigations further reveal their cytocidal effect on malaria parasite growth. It is not the first time that DOS has been used as a strategy to identify therapeutic leads against malaria, but this study establishes the direct implications of DOS in scouting novel motifs with anti-malarial activity. Electronic supplementary material The online version of this article (doi:10.1186/1475-2875-13-467) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Subhabrata Sen
- Shiv Nadar University, Gautam Budh Nagar, UP 203207, India.
| | | |
Collapse
|
23
|
Ricci A. Asymmetric organocatalysis at the service of medicinal chemistry. ISRN ORGANIC CHEMISTRY 2014; 2014:531695. [PMID: 24971178 PMCID: PMC4041019 DOI: 10.1155/2014/531695] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 12/30/2013] [Indexed: 11/17/2022]
Abstract
The application of the most representative and up-to-date examples of homogeneous asymmetric organocatalysis to the synthesis of molecules of interest in medicinal chemistry is reported. The use of different types of organocatalysts operative via noncovalent and covalent interactions is critically reviewed and the possibility of running some of these reactions on large or industrial scale is described. A comparison between the organo- and metal-catalysed methodologies is offered in several cases, thus highlighting the merits and drawbacks of these two complementary approaches to the obtainment of very popular on market drugs or of related key scaffolds.
Collapse
Affiliation(s)
- Alfredo Ricci
- Department of Industrial Chemistry “Toso Montanari”, School of Science, University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy
| |
Collapse
|
24
|
Abstract
Owing to the absence of antiparasitic vaccines and the constant threat of drug resistance, the development of novel antiparasitic chemotherapies remains of major importance for disease control. A better understanding of drug transport (uptake and efflux), drug metabolism and the identification of drug targets, and mechanisms of drug resistance would facilitate the development of more effective therapies. Here, we focus on malaria and African trypanosomiasis. We review existing drugs and drug development, emphasizing high-throughput genomic and genetic approaches, which hold great promise for elucidating antiparasitic mechanisms. We describe the approaches and technologies that have been influential for each parasite and develop new ideas for future research directions, including mode-of-action studies for drug target deconvolution.
Collapse
Affiliation(s)
- David Horn
- Biological Chemistry & Drug Discovery, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK
| | - Manoj T. Duraisingh
- Harvard School of Public Health, 665 Huntington Avenue, Building 1, Room 715, Boston, Massachusetts 02115, USA
| |
Collapse
|
25
|
Identification of a broad-spectrum inhibitor of viral RNA synthesis: validation of a prototype virus-based approach. ACTA ACUST UNITED AC 2013; 20:424-33. [PMID: 23521799 DOI: 10.1016/j.chembiol.2013.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 02/04/2013] [Accepted: 02/06/2013] [Indexed: 12/31/2022]
Abstract
There are no approved therapeutics for the most deadly nonsegmented negative-strand (NNS) RNA viruses, including Ebola (EBOV). To identify chemical scaffolds for the development of broad-spectrum antivirals, we undertook a prototype-based lead identification screen. Using the prototype NNS virus, vesicular stomatitis virus (VSV), multiple inhibitory compounds were identified. Three compounds were investigated for broad-spectrum activity and inhibited EBOV infection. The most potent, CMLDBU3402, was selected for further study. CMLDBU3402 did not show significant activity against segmented negative-strand RNA viruses, suggesting proscribed broad-spectrum activity. Mechanistic analysis indicated that CMLDBU3402 blocked VSV viral RNA synthesis and inhibited EBOV RNA transcription, demonstrating a consistent mechanism of action against genetically distinct viruses. The identification of this chemical backbone as a broad-spectrum inhibitor of viral RNA synthesis offers significant potential for the development of new therapies for highly pathogenic viruses.
Collapse
|
26
|
Beckmann HSG, Nie F, Hagerman CE, Johansson H, Tan YS, Wilcke D, Spring DR. A strategy for the diversity-oriented synthesis of macrocyclic scaffolds using multidimensional coupling. Nat Chem 2013; 5:861-7. [PMID: 24056343 DOI: 10.1038/nchem.1729] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 07/15/2013] [Indexed: 12/22/2022]
Abstract
A prerequisite for successful screening campaigns in drug discovery or chemical genetics is the availability of structurally and thus functionally diverse compound libraries. Diversity-oriented synthesis (DOS) provides strategies for the generation of such libraries, of which the build/couple/pair (B/C/P) algorithm is the most frequently used. We have developed an advanced B/C/P strategy that incorporates multidimensional coupling. In this approach, structural diversity is not only defined by the nature of the building blocks employed, but also by the linking motif installed during the coupling reaction. We applied this step-efficient approach in a DOS of a library that consisted of 73 macrocyclic compounds based around 59 discrete scaffolds. The macrocycles prepared cover a broad range of different molecular shapes, as illustrated by principal moment-of-inertia analysis. This demonstrates the capability of the advanced B/C/P strategy using multidimensional coupling for the preparation of structurally diverse compound collections.
Collapse
Affiliation(s)
- Henning S G Beckmann
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | | | | | | | | | | | | |
Collapse
|
27
|
Filone CM, Connor JH. Approaches for antiviral probe development: new libraries, new mechanisms. Future Virol 2013. [DOI: 10.2217/fvl.13.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Claire Marie Filone
- Boston University School of Medicine, Department of Microbiology, 72 East Concord St, Boston, MA 02118, USA
| | - John H Connor
- Boston University School of Medicine, Department of Microbiology, 72 East Concord St, Boston, MA 02118, USA
| |
Collapse
|
28
|
Virshup AM, Contreras-García J, Wipf P, Yang W, Beratan DN. Stochastic voyages into uncharted chemical space produce a representative library of all possible drug-like compounds. J Am Chem Soc 2013; 135:7296-303. [PMID: 23548177 PMCID: PMC3670418 DOI: 10.1021/ja401184g] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The "small molecule universe" (SMU), the set of all synthetically feasible organic molecules of 500 Da molecular weight or less, is estimated to contain over 10(60) structures, making exhaustive searches for structures of interest impractical. Here, we describe the construction of a "representative universal library" spanning the SMU that samples the full extent of feasible small molecule chemistries. This library was generated using the newly developed Algorithm for Chemical Space Exploration with Stochastic Search (ACSESS). ACSESS makes two important contributions to chemical space exploration: it allows the systematic search of the unexplored regions of the small molecule universe, and it facilitates the mining of chemical libraries that do not yet exist, providing a near-infinite source of diverse novel compounds.
Collapse
Affiliation(s)
- Aaron M. Virshup
- Center for Chemical Methodologies and Library Development, Department of Chemistry, Duke University, Durham, NC 27708
| | - Julia Contreras-García
- Center for Chemical Methodologies and Library Development, Department of Chemistry, Duke University, Durham, NC 27708
| | - Peter Wipf
- Center for Chemical Methodologies and Library Development, Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260
| | - Weitao Yang
- Center for Chemical Methodologies and Library Development, Department of Chemistry, Duke University, Durham, NC 27708
| | - David N. Beratan
- Center for Chemical Methodologies and Library Development, Department of Chemistry, Duke University, Durham, NC 27708
| |
Collapse
|
29
|
Alemán J, Cabrera S. Applications of asymmetric organocatalysis in medicinal chemistry. Chem Soc Rev 2013; 42:774-93. [DOI: 10.1039/c2cs35380f] [Citation(s) in RCA: 325] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
30
|
Hits, leads and drugs against malaria through diversity-oriented synthesis. Future Med Chem 2012; 4:2279-94. [PMID: 23234551 DOI: 10.4155/fmc.12.178] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Malaria is a devastating infectious disease and approximately half the world’s population is at risk. Since vaccination is not yet available, small-molecule-based medicines are currently the best option for the treatment of patients suffering from malaria and combating the spread of infection. Development of resistance against existing drugs has created a need for new types of small molecules to be screened against Plasmodium falciparum, the etiological agent of malaria. The advent of diversity-oriented synthesis has enabled access to novel chemical structures. Evaluation of diversity-oriented synthesis compounds in phenotypic assays for growth inhibition of P. falciparum has resulted in novel hits, leads and even investigational drugs against malaria.
Collapse
|
31
|
Mott BT, Cheng KCC, Guha R, Kommer VP, Williams DL, Vermeire JJ, Cappello M, Maloney DJ, Rai G, Jadhav A, Simeonov A, Inglese J, Posner GH, Thomas CJ. A furoxan-amodiaquine hybrid as a potential therapeutic for three parasitic diseases(). MEDCHEMCOMM 2012; 3:1505-1511. [PMID: 23205265 PMCID: PMC3509744 DOI: 10.1039/c2md20238g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Parasitic diseases continue to have a devastating impact on human populations worldwide. Lack of effective treatments, the high cost of existing ones, and frequent emergence of resistance to these agents provide a strong argument for the development of novel therapies. Here we report the results of a hybrid approach designed to obtain a dual acting molecule that would demonstrate activity against a variety of parasitic targets. The antimalarial drug amodiaquine has been covalently joined with a nitric oxide-releasing furoxan to achieve multiple mechanisms of action. Using in vitro and ex vivo assays, the hybrid molecule shows activity against three parasites - Plasmodium falciparum, Schistosoma mansoni, and Ancylostoma ceylanicum.
Collapse
Affiliation(s)
- Bryan T. Mott
- Department of Chemistry, Zanvyl Krieger School of Arts and Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218, USA
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Ken Chih-Chien Cheng
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Rajarshi Guha
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Valerie P. Kommer
- Department of Immunology and Microbiology, Rush University Medical Center, 1735 West Harrison Street, Chicago, Illinois, 60612, USA
| | - David L. Williams
- Department of Immunology and Microbiology, Rush University Medical Center, 1735 West Harrison Street, Chicago, Illinois, 60612, USA
| | - Jon J. Vermeire
- Department of Pediatrics, Yale Child Health Research Center, Yale University Medical School, 464 Congress Avenue, New Haven, CT 06520, USA
| | - Michael Cappello
- Department of Pediatrics, Yale Child Health Research Center, Yale University Medical School, 464 Congress Avenue, New Haven, CT 06520, USA
| | - David J. Maloney
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Ganesha Rai
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Ajit Jadhav
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Anton Simeonov
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - James Inglese
- Department of Chemistry, Zanvyl Krieger School of Arts and Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218, USA
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Gary H. Posner
- Department of Chemistry, Zanvyl Krieger School of Arts and Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218, USA
- The Johns Hopkins Malaria Research Institute, Bloomberg School of Public Health, Baltimore, Maryland, 21205, USA
| | - Craig J. Thomas
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, 20892, USA
| |
Collapse
|
32
|
Leng B, Chichetti S, Su S, Beeler AB, Porco JA. Synthesis of a novel chemotype via sequential metal-catalyzed cycloisomerizations. Beilstein J Org Chem 2012; 8:1338-43. [PMID: 23019468 PMCID: PMC3458758 DOI: 10.3762/bjoc.8.153] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 07/13/2012] [Indexed: 11/23/2022] Open
Abstract
Sequential cycloisomerizations of diynyl o-benzaldehyde substrates to access novel polycyclic cyclopropanes are reported. The reaction sequence involves initial Cu(I)-mediated cycloisomerization/nucleophilic addition to an isochromene followed by diastereoselective Pt(II)-catalyzed enyne cycloisomerization.
Collapse
Affiliation(s)
- Bo Leng
- Department of Chemistry and Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
| | | | | | | | | |
Collapse
|
33
|
K. Snyder J, C. Benson S, Lee L, Wei W, Ni F, David Janna Olmos J, R. Strom K, B. Beeler A, Chih-Chien Cheng K, Inglese J, Kota S, Takahashi V, Donny Strosberg A, H. Connor J, Guy Bushkin G. Truncated Aspidosperma Alkaloid-Like Scaffolds: Unique Structures for the Discovery of New, Bioactive Compounds. HETEROCYCLES 2012. [DOI: 10.3987/rev-11-sr(p)4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
34
|
O' Connor CJ, Beckmann HSG, Spring DR. Diversity-oriented synthesis: producing chemical tools for dissecting biology. Chem Soc Rev 2012; 41:4444-56. [DOI: 10.1039/c2cs35023h] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
35
|
|
36
|
Brown LE, Dai P, Porco JA, Schaus SE. Gold catalyzed cyclization of alkyne-tethered dihydropyrimidones. Org Lett 2011; 13:4228-31. [PMID: 21749159 PMCID: PMC4251731 DOI: 10.1021/ol2015658] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dihydropyrimidones are an important class of biologically active heterocycles accessible from the multicomponent Biginelli condensation. Further manipulation of the dihydropyrimidone skeleton gives access to unique heterocycles. Presented herein is a Au-catalyzed cyclization of alkyne-tethered dihydropyrimidones to yield pyridopyrimidones.
Collapse
Affiliation(s)
- Lauren E. Brown
- Department of Chemistry and Center for Chemical Methodology and Library Development, Life Sciences and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts 02215
| | - Peng Dai
- Department of Chemistry and Center for Chemical Methodology and Library Development, Life Sciences and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts 02215
| | - John A. Porco
- Department of Chemistry and Center for Chemical Methodology and Library Development, Life Sciences and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts 02215
| | - Scott E. Schaus
- Department of Chemistry and Center for Chemical Methodology and Library Development, Life Sciences and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts 02215
| |
Collapse
|