1
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Pan Y, Suzuki T, Sakai K, Hirano Y, Ikeda H, Hattori A, Dohmae N, Nishio K, Kakeya H. Bisabosqual A: A novel asparagine synthetase inhibitor suppressing the proliferation and migration of human non-small cell lung cancer A549 cells. Eur J Pharmacol 2023; 960:176156. [PMID: 38059445 DOI: 10.1016/j.ejphar.2023.176156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 12/08/2023]
Abstract
Asparagine synthetase (ASNS) is a crucial enzyme for the de novo biosynthesis of endogenous asparagine (Asn), and ASNS shows the positive relationship with the growth of several solid tumors. Most of ASNS inhibitors are analogs of transition-state in ASNS reaction, but their low cell permeability hinders their anticancer activity. Therefore, novel ASNS inhibitors with a new pharmacophore urgently need to be developed. In this study, we established and applied a system for in vitro screening of ASNS inhibitors, and found a promising unique bisabolane-type meroterpenoid molecule, bisabosqual A (Bis A), able to covalently modify K556 site of ASNS protein. Bis A targeted ASNS to suppress cell proliferation of human non-small cell lung cancer A549 cells and exhibited a synergistic effect with L-asparaginase (L-ASNase). Mechanistically, Bis A promoted oxidative stress and apoptosis, while inhibiting autophagy, cell migration and epithelial-mesenchymal transition (EMT), impeding cancer cell development. Moreover, Bis A induced negative feedback pathways containing the GCN2-eIF2α-ATF4, PI3K-AKT-mTORC1 and RAF-MEK-ERK axes, but combination treatment of Bis A and rapamycin/torin-1 overcame the potential drug resistance triggered by mTOR pathways. Our study demonstrates that ASNS inhibition is promising for cancer chemotherapy, and Bis A is a potential lead ASNS inhibitor for anticancer development.
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Affiliation(s)
- Yanjun Pan
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto, 606-8501, Japan
| | - Takehiro Suzuki
- Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Kazuko Sakai
- Department of Genome Biology, Faculty of Medicine, Kindai University, Osaka-Sayama, Osaka, 589-8511, Japan
| | - Yoshinori Hirano
- Graduate School of Science and Technology, Keio University, Kohoku, Yokohama, 223-8522, Japan
| | - Hiroaki Ikeda
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto, 606-8501, Japan
| | - Akira Hattori
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto, 606-8501, Japan
| | - Naoshi Dohmae
- Biomolecular Characterization Unit, RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Kazuto Nishio
- Department of Genome Biology, Faculty of Medicine, Kindai University, Osaka-Sayama, Osaka, 589-8511, Japan
| | - Hideaki Kakeya
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, Kyoto, 606-8501, Japan.
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2
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Baran M, Grimes KD, Sibbald PA, Fu P, Boshoff HIM, Wilson DJ, Aldrich CC. Development of small-molecule inhibitors of fatty acyl-AMP and fatty acyl-CoA ligases in Mycobacterium tuberculosis. Eur J Med Chem 2020; 201:112408. [PMID: 32574901 PMCID: PMC7415619 DOI: 10.1016/j.ejmech.2020.112408] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/07/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022]
Abstract
Lipid metabolism in Mycobacterium tuberculosis (Mtb) relies on 34 fatty acid adenylating enzymes (FadDs) that can be grouped into two classes: fatty acyl-CoA ligases (FACLs) involved in lipid and cholesterol catabolism and long chain fatty acyl-AMP ligases (FAALs) involved in biosynthesis of the numerous essential and virulence-conferring lipids found in Mtb. The precise biochemical roles of many FACLs remain poorly characterized while the functionally non-redundant FAALs are much better understood. Here we describe the systematic investigation of 5'-O-[N-(alkanoyl)sulfamoyl]adenosine (alkanoyl adenosine monosulfamate, alkanoyl-AMS) analogs as potential multitarget FadD inhibitors for their antitubercular activity and biochemical selectivity towards representative FAAL and FACL enzymes. We identified several potent compounds including 12-azidododecanoyl-AMS 28, 11-phenoxyundecanoyl-AMS 32, and nonyloxyacetyl-AMS 36 with minimum inhibitory concentrations (MICs) against M. tuberculosis ranging from 0.098 to 3.13 μM. Compound 32 was notable for its impressive biochemical selectivity against FAAL28 (apparent Ki = 0.7 μM) versus FACL19 (Ki > 100 μM), and uniform activity against a panel of multidrug and extensively drug-resistant TB strains with MICs ranging from 3.13 to 12.5 μM in minimal (GAST) and rich (7H9) media. The SAR analysis provided valuable insights for further optimization of 32 and also identified limitations to overcome.
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Affiliation(s)
- Marzena Baran
- Department of Medicinal Chemistry, University of Minnesota, 8-101 WDH, 308 Harvard Street SE, Minneapolis, MN, 55455, United States
| | - Kimberly D Grimes
- Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Paul A Sibbald
- Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Peng Fu
- Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Helena I M Boshoff
- Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, Bethesda, MD, 20892, United States
| | - Daniel J Wilson
- Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota, 8-101 WDH, 308 Harvard Street SE, Minneapolis, MN, 55455, United States; Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, MN, 55455, United States.
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3
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Radadiya A, Zhu W, Coricello A, Alcaro S, Richards NGJ. Improving the Treatment of Acute Lymphoblastic Leukemia. Biochemistry 2020; 59:3193-3200. [PMID: 32786406 PMCID: PMC7497903 DOI: 10.1021/acs.biochem.0c00354] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
l-Asparaginase (EC 3.5.1.1) was first used as a component of combination drug therapies to treat acute lymphoblastic leukemia (ALL), a cancer of the blood and bone marrow, almost 50 years ago. Administering this enzyme to reduce asparagine levels in the blood is a cornerstone of modern clinical protocols for ALL; indeed, this remains the only successful example of a therapy targeted against a specific metabolic weakness in any form of cancer. Three problems, however, constrain the clinical use of l-asparaginase. First, a type II bacterial variant of l-asparaginase is administered to patients, the majority of whom are children, which produces an immune response thereby limiting the time over which the enzyme can be tolerated. Second, l-asparaginase is subject to proteolytic degradation in the blood. Third, toxic side effects are observed, which may be correlated with the l-glutaminase activity of the enzyme. This Perspective will outline how asparagine depletion negatively impacts the growth of leukemic blasts, discuss the structure and mechanism of l-asparaginase, and briefly describe the clinical use of chemically modified forms of clinically useful l-asparaginases, such as Asparlas, which was recently given FDA approval for use in children (babies to young adults) as part of multidrug treatments for ALL. Finally, we review ongoing efforts to engineer l-asparaginase variants with improved therapeutic properties and briefly detail emerging, alternate strategies for the treatment of forms of ALL that are resistant to asparagine depletion.
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Affiliation(s)
- Ashish Radadiya
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, U.K
| | - Wen Zhu
- Department of Chemistry and California Institute for Quantitative Biosciences, University of California, Berkeley, California 94720, United States
| | - Adriana Coricello
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, U.K.,Dipartimento di Scienze della Salute, Università "Magna Græcia" di Catanzaro, 88100 Catanzaro, Italy
| | - Stefano Alcaro
- Dipartimento di Scienze della Salute, Università "Magna Græcia" di Catanzaro, 88100 Catanzaro, Italy.,Net4Science, Università "Magna Græcia" di Catanzaro, 88100 Catanzaro, Italy
| | - Nigel G J Richards
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, U.K.,Foundation for Applied Molecular Evolution, 13079 Progress Boulevard, Alachua, Florida 32615, United States
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4
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Li C, Jia Z, Chakravorty A, Pahari S, Peng Y, Basu S, Koirala M, Panday SK, Petukh M, Li L, Alexov E. DelPhi Suite: New Developments and Review of Functionalities. J Comput Chem 2019; 40:2502-2508. [PMID: 31237360 PMCID: PMC6771749 DOI: 10.1002/jcc.26006] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/07/2019] [Accepted: 06/09/2019] [Indexed: 12/25/2022]
Abstract
Electrostatic potential, energies, and forces affect virtually any process in molecular biology, however, computing these quantities is a difficult task due to irregularly shaped macromolecules and the presence of water. Here, we report a new edition of the popular software package DelPhi along with describing its functionalities. The new DelPhi is a C++ object-oriented package supporting various levels of multiprocessing and memory distribution. It is demonstrated that multiprocessing results in significant improvement of computational time. Furthermore, for computations requiring large grid size (large macromolecular assemblages), the approach of memory distribution is shown to reduce the requirement of RAM and thus permitting large-scale modeling to be done on Linux clusters with moderate architecture. The new release comes with new features, whose functionalities and applications are described as well. © 2019 The Authors. Journal of Computational Chemistry published by Wiley Periodicals, Inc.
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Affiliation(s)
- Chuan Li
- Department of MathematicsWest Chester University of PennsylvaniaWest ChesterPennsylvania19383
| | - Zhe Jia
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | - Arghya Chakravorty
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | - Swagata Pahari
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | - Yunhui Peng
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | - Sankar Basu
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | - Mahesh Koirala
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
| | | | - Marharyta Petukh
- Department of BiologyPresbyterian CollegeClintonSouth Carolina29325
| | - Lin Li
- Department of PhysicsUniversity of Texas at EI PasoTexas79968
| | - Emil Alexov
- Department of Physics and AstronomyClemson UniversityClemsonSouth Carolina29634
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5
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Zhu W, Radadiya A, Bisson C, Wenzel S, Nordin BE, Martínez-Márquez F, Imasaki T, Sedelnikova SE, Coricello A, Baumann P, Berry AH, Nomanbhoy TK, Kozarich JW, Jin Y, Rice DW, Takagi Y, Richards NGJ. High-resolution crystal structure of human asparagine synthetase enables analysis of inhibitor binding and selectivity. Commun Biol 2019; 2:345. [PMID: 31552298 PMCID: PMC6748925 DOI: 10.1038/s42003-019-0587-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 08/21/2019] [Indexed: 12/20/2022] Open
Abstract
Expression of human asparagine synthetase (ASNS) promotes metastatic progression and tumor cell invasiveness in colorectal and breast cancer, presumably by altering cellular levels of L-asparagine. Human ASNS is therefore emerging as a bona fide drug target for cancer therapy. Here we show that a slow-onset, tight binding inhibitor, which exhibits nanomolar affinity for human ASNS in vitro, exhibits excellent selectivity at 10 μM concentration in HCT-116 cell lysates with almost no off-target binding. The high-resolution (1.85 Å) crystal structure of human ASNS has enabled us to identify a cluster of negatively charged side chains in the synthetase domain that plays a key role in inhibitor binding. Comparing this structure with those of evolutionarily related AMP-forming enzymes provides insights into intermolecular interactions that give rise to the observed binding selectivity. Our findings demonstrate the feasibility of developing second generation human ASNS inhibitors as lead compounds for the discovery of drugs against metastasis. Wen Zhu et al. report the crystal structure of human asparagine synthetase at a 1.85 Å resolution, enabling computational analysis of inhibitor binding. They also find new insights into the intermolecular interactions contributing to binding specificity of inhibitors.
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Affiliation(s)
- Wen Zhu
- 1School of Chemistry, Cardiff University, Cardiff, UK.,8Present Address: Department of Chemistry and California Institute for Quantitative Biosciences, University of California, Berkeley, CA USA
| | | | - Claudine Bisson
- 2Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, UK.,8Present Address: Department of Chemistry and California Institute for Quantitative Biosciences, University of California, Berkeley, CA USA
| | - Sabine Wenzel
- 3Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN USA
| | - Brian E Nordin
- 4ActivX Biosciences, Inc, La Jolla, CA USA.,Present Address: Vividion Therapeutics, San Diego, CA USA
| | - Francisco Martínez-Márquez
- 3Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN USA
| | - Tsuyoshi Imasaki
- 3Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN USA.,5Division of Structural Medicine and Anatomy, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Svetlana E Sedelnikova
- 2Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, UK
| | | | | | - Alexandria H Berry
- 6Department of Biology, California Institute of Technology, Pasadena, CA USA
| | | | | | - Yi Jin
- 1School of Chemistry, Cardiff University, Cardiff, UK
| | - David W Rice
- 2Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, UK
| | - Yuichiro Takagi
- 3Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN USA
| | - Nigel G J Richards
- 1School of Chemistry, Cardiff University, Cardiff, UK.,7Foundation for Applied Molecular Evolution, Alachua, FL USA
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6
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Draoui N, de Zeeuw P, Carmeliet P. Angiogenesis revisited from a metabolic perspective: role and therapeutic implications of endothelial cell metabolism. Open Biol 2018; 7:rsob.170219. [PMID: 29263247 PMCID: PMC5746547 DOI: 10.1098/rsob.170219] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 11/28/2017] [Indexed: 12/16/2022] Open
Abstract
Endothelial cell (EC) metabolism has lately emerged as a novel and promising therapeutic target to block vascular dysregulation associated with diseases like cancer and blinding eye disease. Glycolysis, fatty acid oxidation (FAO) and, more recently, glutamine/asparagine metabolism emerged as key regulators of EC metabolism, able to impact angiogenesis in health and disease. ECs are highly glycolytic as they require ATP and biomass for vessel sprouting. Notably, a regulator of the glycolytic pathway, 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3, controls vessel sprouting during the angiogenic switch and its inhibition in tumour ECs leads to vessel normalization, thereby reducing metastasis and ameliorating chemotherapy. Moreover, FAO promotes EC proliferation through DNA synthesis, and plays an essential role in lymphangiogenesis via epigenetic regulation of histone acetylation. Pathological angiogenesis was decreased upon blockade of carnitine palmitoyltransferase 1, a regulator of FAO in ECs. More recently, metabolism of glutamine, in conjunction with asparagine, was reported to maintain EC sprouting through TCA anaplerosis, redox homeostasis, mTOR activation and endoplasmic stress control. Inactivation or blockade of glutaminase 1, which hydrolyses glutamine into ammonia and glutamate, impairs angiogenesis in health and disease, while silencing of asparagine synthetase reduces vessel sprouting in vitro. In this review, we summarize recent insights into EC metabolism and discuss therapeutic implications of targeting EC metabolism.
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Affiliation(s)
- Nihed Draoui
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven 3000, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, KU Leuven, Campus Gasthuisberg O&N4, Herestraat 49-912, Leuven 3000, Belgium
| | - Pauline de Zeeuw
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven 3000, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, KU Leuven, Campus Gasthuisberg O&N4, Herestraat 49-912, Leuven 3000, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven 3000, Belgium .,Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, KU Leuven, Campus Gasthuisberg O&N4, Herestraat 49-912, Leuven 3000, Belgium
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7
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Dawadi S, Boshoff HIM, Park SW, Schnappinger D, Aldrich CC. Conformationally Constrained Cinnolinone Nucleoside Analogues as Siderophore Biosynthesis Inhibitors for Tuberculosis. ACS Med Chem Lett 2018; 9:386-391. [PMID: 29670706 DOI: 10.1021/acsmedchemlett.8b00090] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 03/16/2018] [Indexed: 12/25/2022] Open
Abstract
5'-O-[N-(Salicyl)sulfamoyl]adenosine (Sal-AMS, 1) is a nucleoside antibiotic that inhibits incorporation of salicylate into siderophores required for bacterial iron acquisition and has potent activity against Mycobacterium tuberculosis (Mtb). Cinnolone analogues exemplified by 5 were designed to replace the acidic acyl-sulfamate functional group of 1 (pKa = 3) by a more stable sulfonamide linkage (pKa = 6.0) in an attempt to address potential metabolic liabilities and improve membrane permeability. We showed 5 potently inhibited the mycobacterial salicylate ligase MbtA (apparent Ki = 12 nM), blocked production of the salicylate-capped siderophores in whole-cell Mtb, and exhibited excellent antimycobacterial activity under iron-deficient conditions (minimum inhibitor concentration, MIC = 2.3 μM). To provide additional confirmation of the mechanism of action, we demonstrated the whole-cell activity of 5 could be fully antagonized by the addition of exogenous salicylate to the growth medium. Although the total polar surface area (tPSA) of 5 still exceeds the nominal threshold value (140 Å) typically required for oral bioavailability, we were pleasantly surprised to observe introduction of the less acidic and conformationally constrained cinnolone moiety conferred improved drug disposition properties as evidenced by the 7-fold increase in volume of distribution in Sprague-Dawley rats.
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Affiliation(s)
- Surendra Dawadi
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Helena I. M. Boshoff
- Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, United States
| | - Sae Woong Park
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, New York 10021, United States
| | - Dirk Schnappinger
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, New York 10021, United States
| | - Courtney C. Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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8
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Datta D, Tiwari O, Ganesh KN. New archetypes in self-assembled Phe-Phe motif induced nanostructures from nucleoside conjugated-diphenylalanines. NANOSCALE 2018; 10:3212-3224. [PMID: 29379926 DOI: 10.1039/c7nr08436f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
During the last two decades, the molecular self-assembly of the short peptide diphenylalanine (Phe-Phe) motif has attracted increasing focus due to its unique morphological structure and utility for potential applications in biomaterial chemistry, sensors and bioelectronics. Due to the ease of their synthetic modifications and a plethora of available experimental tools, the self-assembly of free and protected diphenylalanine scaffolds (H-Phe-Phe-OH, Boc-Phe-Phe-OH and Boc-Phe-Phe-OMe) has unfurled interesting tubular, vesicular or fibrillar morphologies. Developing on this theme, here we attempt to examine the effect of structure and properties (hydrophobic and H-bonding) modifying the functional C-terminus conjugated substituents on Boc-Phe-Phe on its self-assembly process. The consequent self-sorting due to H-bonding, van der Waals force and π-π interactions, generates monodisperse nano-vesicles from these peptides characterized via their SEM, HRTEM, AFM pictures and DLS experiments. The stability of these vesicles to different external stimuli such as pH and temperature, encapsulation of fluorescent probes inside the vesicles and their release by external trigger are reported. The results point to a new direction in the study and applications of the Phe-Phe motif to rationally engineer new functional nano-architectures.
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Affiliation(s)
- Dhrubajyoti Datta
- Department of Chemistry, Chemical Biology Unit, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411008, India.
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9
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Zhang Y, Jumppanen M, Maksimainen MM, Auno S, Awol Z, Ghemtio L, Venkannagari H, Lehtiö L, Yli-Kauhaluoma J, Xhaard H, Boije Af Gennäs G. Adenosine analogs bearing phosphate isosteres as human MDO1 ligands. Bioorg Med Chem 2018; 26:1588-1597. [PMID: 29501416 DOI: 10.1016/j.bmc.2018.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 02/01/2018] [Accepted: 02/05/2018] [Indexed: 12/19/2022]
Abstract
The human O-acetyl-ADP-ribose deacetylase MDO1 is a mono-ADP-ribosylhydrolase involved in the reversal of post-translational modifications. Until now MDO1 has been poorly characterized, partly since no ligand is known besides adenosine nucleotides. Here, we synthesized thirteen compounds retaining the adenosine moiety and bearing bioisosteric replacements of the phosphate at the ribose 5'-oxygen. These compounds are composed of either a squaryldiamide or an amide group as the bioisosteric replacement and/or as a linker. To these groups a variety of substituents were attached such as phenyl, benzyl, pyridyl, carboxyl, hydroxy and tetrazolyl. Biochemical evaluation showed that two compounds, one from both series, inhibited ADP-ribosyl hydrolysis mediated by MDO1 in high concentrations.
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Affiliation(s)
- Yuezhou Zhang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Mikael Jumppanen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Mirko M Maksimainen
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, FI-90014 University of Oulu, Finland
| | - Samuli Auno
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Zulfa Awol
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Léo Ghemtio
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Harikanth Venkannagari
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, FI-90014 University of Oulu, Finland
| | - Lari Lehtiö
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, FI-90014 University of Oulu, Finland
| | - Jari Yli-Kauhaluoma
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Henri Xhaard
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland
| | - Gustav Boije Af Gennäs
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, FI-00014 University of Helsinki, Finland.
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10
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Datta D, Mondal P, Dasgupta S, Pathak T. Acidic-Amino-Acid-Conjugated Dinucleosides as Ribonuclease A Inhibitors: Rational Design and Effect of Backbone Chirality on Enzyme Inhibition. ChemistrySelect 2017. [DOI: 10.1002/slct.201700253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dhrubajyoti Datta
- Department of Chemistry; Indian Institute of Technology Kharagpur (IIT Kharagpur); Kharagpur 721302 India
| | - Pampa Mondal
- Department of Chemistry; Indian Institute of Technology Kharagpur (IIT Kharagpur); Kharagpur 721302 India
| | - Swagata Dasgupta
- Department of Chemistry; Indian Institute of Technology Kharagpur (IIT Kharagpur); Kharagpur 721302 India
| | - Tanmaya Pathak
- Department of Chemistry; Indian Institute of Technology Kharagpur (IIT Kharagpur); Kharagpur 721302 India
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11
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Kuhn ML, Alexander E, Minasov G, Page HJ, Warwrzak Z, Shuvalova L, Flores KJ, Wilson DJ, Shi C, Aldrich CC, Anderson WF. Structure of the Essential Mtb FadD32 Enzyme: A Promising Drug Target for Treating Tuberculosis. ACS Infect Dis 2016; 2:579-591. [PMID: 27547819 DOI: 10.1021/acsinfecdis.6b00082] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mycolic acids are indispensible lipids of Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), and contribute to the distinctive architecture and impermeability of the mycobacterial cell envelope. FadD32 plays a pivotal role in mycolic acid biosynthesis by functionally linking fatty acid synthase (FAS) and polyketide synthase (PKS) biosynthetic pathways. FadD32, a fatty acyl-AMP ligase (FAAL), represents one of the best genetically and chemically validated new TB drug targets. We have determined the three-dimensional crystal structure of Mtb FadD32 in complex with a ligand specifically designed to stabilize the catalytically active adenylate-conformation, which provides a foundation for structure-based drug design efforts against this essential protein. The structure also captures the unique interactions of a FAAL-specific insertion sequence and provides insight into the specificity and mechanism of fatty acid transfer.
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Affiliation(s)
- Misty L. Kuhn
- Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
- Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, California 94132, United States
| | | | - George Minasov
- Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Holland J. Page
- Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, California 94132, United States
| | - Zdzislaw Warwrzak
- LS-CAT,
Synchrotron Research Center, Northwestern University, Argonne, Illinois 60439, United States
| | - Ludmilla Shuvalova
- Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Kristin J. Flores
- Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | | | | | | | - Wayne F. Anderson
- Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
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12
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Synthesis and characterization of a PAMAM-OH derivative containing an acid-labile β-thiopropionate bond for gene delivery. Int J Pharm 2016; 509:314-327. [PMID: 27260132 DOI: 10.1016/j.ijpharm.2016.05.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/24/2016] [Accepted: 05/27/2016] [Indexed: 12/23/2022]
Abstract
The present report describes the synthesis of a hydroxyl terminal PAMAM dendrimer (PAMAM-OH) derivative (PAMSPF). The hydroxyls of PAMAM-OH were attached to S-Methyl-l-cysteine (SMLC) via an acid-labile ester bond, named as β-thiopropionate bond, followed by modification with folic acid (FA) through a polyethylene glycol (PEG) linker. The degrees of attachment of SMLC and FA to the PAMAM-OH backbone were 83.9% and 12.8%, respectively. PAMSPF could condense DNA to form spherical nanoparticles with particle sizes of ∼200nm and remain stable in the presence of heparin and nuclease. The β-thiopropionate bond in PAMSPF was hydrolyzed completely and the DNA release rate was 95.8±3.3% after incubation under mildly acidic conditions at 37°C for 3h. PAMSPF/DNA was less cytotoxic to KB and HepG2 cells and exhibited a higher gene transfection efficiency than native PAMAM/DNA. The uptake assays showed that PAMSPF/DNA entered KB cells within 0.5h through folate receptor-mediated endocytosis and escaped from endosomes within 2h. In addition, PAMSPF/DNA displayed long circulation time along with excellent targeting of tumor sites in vivo. These findings demonstrate that PAMSPF is an excellent carrier for safe and effective gene delivery.
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13
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Structures of two distinct conformations of holo-non-ribosomal peptide synthetases. Nature 2016; 529:235-8. [PMID: 26762461 PMCID: PMC4843164 DOI: 10.1038/nature16163] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 10/29/2015] [Indexed: 12/22/2022]
Abstract
Many important natural products are produced by multidomain nonribosomal peptide synthetases (NRPSs)1–4. During synthesis, intermediates are covalently bound to integrated carrier domains and transported to neighboring catalytic domains in an assembly line fashion5. Understanding the structural basis for catalysis with NRPSs will facilitate bioengineering to create novel products. Here we describe the structures of two different holo-NRPSs modules, each revealing a distinct step in the catalytic cycle. One structure depicts the carrier domain cofactor bound to the peptide bond-forming condensation domain, whereas a second structure captures the installation of the amino acid onto the cofactor within the adenylation domain. These structures demonstrate that a conformational change within the adenylation domain guides transfer of intermediates between domains. Furthermore, one structure shows that the condensation and adenylation domains simultaneously adopt their catalytic conformations, increasing the overall efficiency in a revised structural cycle. These structures and single-particle electron microscopy analysis demonstrate a highly dynamic domain architecture and provide the foundation for understanding the structural mechanisms that could enable engineering novel NRPSs.
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14
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Lopes AM, Oliveira-Nascimento LD, Ribeiro A, Tairum CA, Breyer CA, Oliveira MAD, Monteiro G, Souza-Motta CMD, Magalhães PDO, Avendaño JGF, Cavaco-Paulo AM, Mazzola PG, Rangel-Yagui CDO, Sette LD, Converti A, Pessoa A. Therapeuticl-asparaginase: upstream, downstream and beyond. Crit Rev Biotechnol 2015; 37:82-99. [DOI: 10.3109/07388551.2015.1120705] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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15
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Bockman MR, Kalinda AS, Petrelli R, De la Mora-Rey T, Tiwari D, Liu F, Dawadi S, Nandakumar M, Rhee KY, Schnappinger D, Finzel BC, Aldrich CC. Targeting Mycobacterium tuberculosis Biotin Protein Ligase (MtBPL) with Nucleoside-Based Bisubstrate Adenylation Inhibitors. J Med Chem 2015; 58:7349-7369. [PMID: 26299766 PMCID: PMC4667793 DOI: 10.1021/acs.jmedchem.5b00719] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mycobacterium tuberculosis (Mtb), responsible for both latent and symptomatic tuberculosis (TB), remains the second leading cause of mortality among infectious diseases worldwide. Mycobacterial biotin protein ligase (MtBPL) is an essential enzyme in Mtb and regulates lipid metabolism through the post-translational biotinylation of acyl coenzyme A carboxylases. We report the synthesis and evaluation of a systematic series of potent nucleoside-based inhibitors of MtBPL that contain modifications to the ribofuranosyl ring of the nucleoside. All compounds were characterized by isothermal titration calorimetry (ITC) and shown to bind potently with K(D)s ≤ 2 nM. Additionally, we obtained high-resolution cocrystal structures for a majority of the compounds. Despite fairly uniform biochemical potency, the whole-cell Mtb activity varied greatly with minimum inhibitory concentrations (MIC) ranging from 0.78 to >100 μM. Cellular accumulation studies showed a nearly 10-fold enhancement in accumulation of a C-2'-α analogue over the corresponding C-2'-β analogue, consistent with their differential whole-cell activity.
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Affiliation(s)
- Matthew R. Bockman
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Alvin S. Kalinda
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA,Center for Drug Design, Academic Health Center, University of Minnesota, MN 55455 USA
| | - Riccardo Petrelli
- Center for Drug Design, Academic Health Center, University of Minnesota, MN 55455 USA
| | - Teresa De la Mora-Rey
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Divya Tiwari
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY 10021, USA
| | - Feng Liu
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Surrendra Dawadi
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Madhumitha Nandakumar
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY 10021, USA
| | - Kyu Y. Rhee
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY 10021, USA
| | - Dirk Schnappinger
- Department of Microbiology and Immunology, Weill Cornell Medical College, New York, NY 10021, USA
| | - Barry C. Finzel
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
| | - Courtney C. Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN 55455, USA,Center for Drug Design, Academic Health Center, University of Minnesota, MN 55455 USA,Corresponding Author Footnote: To whom correspondence should be addressed. Phone 612-625-7956. Fax 612-626-3114.
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16
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Nelson KM, Viswanathan K, Dawadi S, Duckworth BP, Boshoff HI, Barry CE, Aldrich CC. Synthesis and Pharmacokinetic Evaluation of Siderophore Biosynthesis Inhibitors for Mycobacterium tuberculosis. J Med Chem 2015; 58:5459-75. [PMID: 26110337 DOI: 10.1021/acs.jmedchem.5b00391] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
MbtA catalyzes the first committed biosynthetic step of the mycobactins, which are important virulence factors associated with iron acquisition in Mycobacterium tuberculosis. MbtA is a validated therapeutic target for antitubercular drug development. 5'-O-[N-(Salicyl)sulfamoyl]adenosine (1) is a bisubstrate inhibitor of MbtA and exhibits exceptionally potent biochemical and antitubercular activity. However, 1 suffers from suboptimal drug disposition properties resulting in a short half-life (t(1/2)), low exposure (AUC), and low bioavailability (F). Four strategies were pursued to address these liabilities including the synthesis of prodrugs, increasing the pK(a) of the acyl-sulfonyl moiety, modulation of the lipophilicity, and strategic introduction of fluorine into 1. Complete pharmacokinetic (PK) analysis of all compounds was performed. The most successful modifications involved fluorination of the nucleoside that provided substantial improvements in t(1/2) and AUC. Increasing the pK(a) of the acyl-sulfonyl linker yielded incremental enhancements, while modulation of the lipophilicity and prodrug approaches led to substantially poorer PK parameters.
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Affiliation(s)
- Kathryn M Nelson
- †Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kishore Viswanathan
- ‡Department of Medicinal Chemistry, University of Minnesota, 8-174 WDH, 308 Harvard Street SE, Minneapolis, Minnesota 55455, United States
| | - Surendra Dawadi
- ‡Department of Medicinal Chemistry, University of Minnesota, 8-174 WDH, 308 Harvard Street SE, Minneapolis, Minnesota 55455, United States
| | - Benjamin P Duckworth
- †Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Helena I Boshoff
- §Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, United States
| | - Clifton E Barry
- §Tuberculosis Research Section, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, United States
| | - Courtney C Aldrich
- †Center for Drug Design, Academic Health Center, University of Minnesota, Minneapolis, Minnesota 55455, United States.,‡Department of Medicinal Chemistry, University of Minnesota, 8-174 WDH, 308 Harvard Street SE, Minneapolis, Minnesota 55455, United States
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17
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Tamura O, Ueda T, Inada M, Morita N. Total Synthesis of Maremycins A and D1 Using Chiral and Cyclic Nitrone with (E)-3-Ethylidene-1-methylindolin-2-one. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)93] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Miao J, Richards NGJ, Ge H. Rhodium-catalyzed direct synthesis of unprotected NH-sulfoximines from sulfoxides. Chem Commun (Camb) 2014; 50:9687-9. [DOI: 10.1039/c4cc04349a] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel rhodium–catalyzed imination of sulfoxides using O-(2,4-dinitrophenyl)hydroxylamine is developed under mild conditions with good functional group tolerance.
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Affiliation(s)
- Jinmin Miao
- Department of Chemistry and Chemical Biology Indiana University Purdue University Indianapolis
- Indianapolis, USA
| | - Nigel G. J. Richards
- Department of Chemistry and Chemical Biology Indiana University Purdue University Indianapolis
- Indianapolis, USA
| | - Haibo Ge
- Department of Chemistry and Chemical Biology Indiana University Purdue University Indianapolis
- Indianapolis, USA
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19
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Datta D, Samanta A, Dasgupta S, Pathak T. Synthesis of 5′-carboxymethylsulfonyl-5′-deoxyribonucleosides under mild hydrolytic conditions: a new class of acidic nucleosides as inhibitors of ribonuclease A. RSC Adv 2014. [DOI: 10.1039/c3ra45084h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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20
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Shi C, Tiwari D, Wilson DJ, Seiler CL, Schnappinger D, Aldrich CC. Bisubstrate Inhibitors of Biotin Protein Ligase in Mycobacterium tuberculosis Resistant to Cyclonucleoside Formation. ACS Med Chem Lett 2013; 4. [PMID: 24363833 DOI: 10.1021/ml400328a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb), the etiological agent of tuberculosis, is the leading cause bacterial infectious diseases mortality. Biotin protein ligase (BirA) globally regulates lipid metabolism in Mtb through the posttranslational biotinylation of acyl coenzyme A carboxylases (ACCs) involved in lipid biosynthesis and is essential for Mtb survival. We previously developed a rationally designed bisubstrate inhibitor of BirA that displays potent enzyme inhibition and whole-cell activity against multidrug resistant and extensively drug resistant Mtb strains. Here we present the design, synthesis and evaluation of a focused series of inhibitors, which are resistant to cyclonucleoside formation, a key decomposition pathway of our initial analogue. Improved chemical stability is realized through replacement of the adenosyl N-3 nitrogen and C-5' oxygen atom with carbon as well as incorporation of bulky group on the nucleobase to prevent the required syn-conformation necessary for proper alignment of N-3 with C-5'.
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Affiliation(s)
- Ce Shi
- Center
for Drug Design, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department
of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Divya Tiwari
- Department
of Microbiology and Immunology, Weill Cornell Medical College, New York, New York 10065, United States
| | - Daniel J. Wilson
- Center
for Drug Design, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christopher L. Seiler
- Department
of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Dirk Schnappinger
- Department
of Microbiology and Immunology, Weill Cornell Medical College, New York, New York 10065, United States
| | - Courtney C. Aldrich
- Center
for Drug Design, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department
of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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21
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Engelhart CA, Aldrich CC. Synthesis of chromone, quinolone, and benzoxazinone sulfonamide nucleosides as conformationally constrained inhibitors of adenylating enzymes required for siderophore biosynthesis. J Org Chem 2013; 78:7470-81. [PMID: 23805993 DOI: 10.1021/jo400976f] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
MbtA catalyzes the first committed step of mycobactin biosynthesis in Mycobacterium tuberculosis (Mtb) and is responsible for the incorporation of salicylic acid into the mycobactin siderophores. 5'-O-[N-(Salicyl)sulfamoyl]adenosine (Sal-AMS) is an extremely potent nucleoside inhibitor of MbtA that possesses excellent activity against whole-cell Mtb but suffers from poor bioavailability. In an effort to improve the bioavailability, we have designed four conformationally constrained analogues of Sal-AMS that remove two rotatable bonds and the ionized sulfamate group on the basis of computational and structural studies. Herein we describe the synthesis, biochemical, and microbiological evaluation of chromone-, quinolone-, and benzoxazinone-3-sulfonamide derivatives of Sal-AMS. We developed new chemistry to assemble these three heterocycles from common β-ketosulfonamide intermediates. The synthesis of the chromone- and quinolone-3-sulfonamide intermediates features formylation of a β-ketosulfonamide employing dimethylformamide dimethyl acetal to afford an enaminone that can react intramolecularly with a phenol or intermolecularly with a primary amine via addition-elimination reaction(s). The benzoxazinone-3-sulfonamide was prepared by nitrosation of a β-ketosulfonamide followed by intramolecular nucleophilic aromatic substitution. Mitsunobu coupling of these bicyclic sulfonamides with a protected adenosine derivative followed by global deprotection provides a concise synthesis of the respective inhibitors.
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Affiliation(s)
- Curtis A Engelhart
- Center for Drug Design, University of Minnesota, Minneapolis, Minnesota 55455, USA
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22
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Pradere U, Amblard F, Coats SJ, Schinazi RF. Synthesis of 5'-methylene-phosphonate furanonucleoside prodrugs: application to D-2'-deoxy-2'-α-fluoro-2'-β-C-methyl nucleosides. Org Lett 2012; 14:4426-9. [PMID: 22917194 PMCID: PMC3470451 DOI: 10.1021/ol301937v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new and facile synthetic pathway to metabolically stable 5'-methylene-bis(pivaloyloxymethyl)(POM)phosphonate furanonucleoside prodrugs is reported. The key step involves a Horner-Wadsworth-Emmons reaction of a tetra(pivaloyloxymethyl) bisphosphonate salt with appropriately protected 5'-aldehydic nucleosides. This efficient approach was applied for the synthesis HCV related 2'-deoxy-2'-α-fluoro-2'-β-C-methyl nucleosides.
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Affiliation(s)
- Ugo Pradere
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, Decatur, GA 30033, USA, and RFS Pharma, LLC, 1860 Montreal Road, Tucker, GA 30084, USA
| | - Franck Amblard
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, Decatur, GA 30033, USA, and RFS Pharma, LLC, 1860 Montreal Road, Tucker, GA 30084, USA
| | - Steven J. Coats
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, Decatur, GA 30033, USA, and RFS Pharma, LLC, 1860 Montreal Road, Tucker, GA 30084, USA
| | - Raymond F. Schinazi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, Decatur, GA 30033, USA, and RFS Pharma, LLC, 1860 Montreal Road, Tucker, GA 30084, USA
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23
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Ikeuchi H, Ahn YM, Otokawa T, Watanabe B, Hegazy L, Hiratake J, Richards NGJ. A sulfoximine-based inhibitor of human asparagine synthetase kills L-asparaginase-resistant leukemia cells. Bioorg Med Chem 2012; 20:5915-27. [PMID: 22951255 DOI: 10.1016/j.bmc.2012.07.047] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 07/19/2012] [Accepted: 07/24/2012] [Indexed: 11/27/2022]
Abstract
An adenylated sulfoximine transition-state analogue 1, which inhibits human asparagine synthetase (hASNS) with nanomolar potency, has been reported to suppress the proliferation of an l-asparagine amidohydrolase (ASNase)-resistant MOLT-4 leukemia cell line (MOLT-4R) when l-asparagine is depleted in the medium. We now report the synthesis and biological activity of two new sulfoximine analogues of 1 that have been studied as part of systematic efforts to identify compounds with improved cell permeability and/or metabolic stability. One of these new analogues, an amino sulfoximine 5 having no net charge at cellular pH, is a better hASNS inhibitor (K(I)(∗)=8 nM) than 1 and suppresses proliferation of MOLT-4R cells at 10-fold lower concentration (IC(50)=0.1mM). More importantly, and in contrast to the lead compound 1, the presence of sulfoximine 5 at concentrations above 0.25 mM causes the death of MOLT-4R cells even when ASNase is absent in the culture medium. The amino sulfoximine 5 exhibits different dose-response behavior when incubated with an ASNase-sensitive MOLT-4 cell line (MOLT-4S), supporting the hypothesis that sulfoximine 5 exerts its effect by inhibiting hASNS in the cell. Our work provides further evidence for the idea that hASNS represents a chemotherapeutic target for the treatment of leukemia, and perhaps other cancers, including those of the prostate.
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Affiliation(s)
- Hideyuki Ikeuchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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24
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Debnath J, Dasgupta S, Pathak T. Dinucleosides with Non-Natural Backbones: A New Class of Ribonuclease A and Angiogenin Inhibitors. Chemistry 2012; 18:1618-27. [DOI: 10.1002/chem.201102816] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Indexed: 11/11/2022]
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25
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Albers MF, van Vliet B, Hedberg C. Amino acid building blocks for efficient Fmoc solid-phase synthesis of peptides adenylylated at serine or threonine. Org Lett 2011; 13:6014-7. [PMID: 22029258 DOI: 10.1021/ol2024696] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The first straightforward building block based (non-interassembly) synthesis of peptides containing adenylylated serine and threonine residues is described. Key features include final global acidolytic protective group removal as well as full compatibility with standard Fmoc solid-phase peptide synthesis (SPPS). The described Thr-AMP SPPS-building block has been employed in the synthesis of the Thr-adenylylated sequence of human GTPase CDC42 (Ac-SEYVP-T(AMP)-VFDNYGC-NH(2)). Further, we demonstrate proof-of-concept for the synthesis of an Ser-adenylylated peptide (Ac-GSGA-S(AMP)-AGSGC-NH(2)) from the corresponding adenylylated serine building block.
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Affiliation(s)
- Michael F Albers
- Department of Chemical Biology, Max-Planck Institute of Molecular Physiology, Otto-Hahn Strasse 11, D-44227, Dortmund, Germany
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26
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Smit C, Blümer J, Eerland MF, Albers MF, Müller MP, Goody RS, Itzen A, Hedberg C. Efficient synthesis and applications of peptides containing adenylylated tyrosine residues. Angew Chem Int Ed Engl 2011; 50:9200-4. [PMID: 21919157 DOI: 10.1002/anie.201103203] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 06/20/2011] [Indexed: 12/12/2022]
Affiliation(s)
- Cornelis Smit
- Max-Planck-Institut für molekulare Physiologie, Abt. Chemische Biologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
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27
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Smit C, Blümer J, Eerland MF, Albers MF, Müller MP, Goody RS, Itzen A, Hedberg C. Effiziente Synthese und Anwendung von Peptiden mit adenylylierten Tyrosinresten. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Meyer ME, Gutierrez JA, Raushel FM, Richards NGJ. A conserved glutamate controls the commitment to acyl-adenylate formation in asparagine synthetase. Biochemistry 2010; 49:9391-401. [PMID: 20853825 PMCID: PMC2975022 DOI: 10.1021/bi1010688] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Inhibitor docking studies have implicated a conserved glutamate residue (Glu-348) as a general base in the synthetase active site of the enzyme asparagine synthetase B from Escherichia coli (AS-B). We now report steady-state kinetic, isotope transfer, and positional isotope exchange experiments for a series of site-directed AS-B mutants in which Glu-348 is substituted by conservative amino acid replacements. We find that formation of the β-aspartyl-AMP intermediate, and therefore the eventual production of asparagine, is dependent on the presence of a carboxylate side chain at this position in the synthetase active site. In addition, Glu-348 may also play a role in mediating the conformational changes needed to (i) coordinate, albeit weakly, the glutaminase and synthetase activities of the enzyme and (ii) establish the structural integrity of the intramolecular tunnel along which ammonia is translocated. The importance of Glu-348 in mediating acyl-adenylate formation contrasts with the functional role of the cognate residues in β-lactam synthetase (BLS) and carbapenem synthetase (CPS) (Tyr-348 and Tyr-345, respectively), which both likely evolved from asparagine synthetase. Given the similarity of the chemistry catalyzed by AS-B, BLS, and CPS, our work highlights the difficulty of predicting the functional outcome of single site mutations on enzymes that catalyze almost identical chemical transformations.
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Affiliation(s)
- Megan E. Meyer
- Department of Chemistry, P.O. Box 117200, University of Florida, Gainesville, FL 32611
| | - Jemy A. Gutierrez
- Department of Chemistry, P.O. Box 117200, University of Florida, Gainesville, FL 32611
| | - Frank M. Raushel
- Department of Chemistry, P.O. Box 30012, Texas A&M University, College Station, TX 77843
| | - Nigel G. J. Richards
- Department of Chemistry, P.O. Box 117200, University of Florida, Gainesville, FL 32611
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