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Kumar S, Rao NNS, Reddy KSSVP, Padole MC, Deshpande PA. Enzyme-substrate interactions in orotate-mimetic OPRT inhibitor complexes: a QM/MM analysis. Phys Chem Chem Phys 2023; 25:3472-3484. [PMID: 36637052 DOI: 10.1039/d2cp05406j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Orotate phosphoribosyltransferase (OPRT) catalyses the reversible phosphoribosyl transfer from α-D-5-phosphoribosyl-1-pyrophosphate (PRPP) to orotic acid (OA) to yield orotidine 5'-monophosphate (OMP) during the de novo synthesis of nucleotides. Numerous studies have reported the inhibition of this reaction as a strategy to check diseases like tuberculosis, malaria and cancer. Insight into the inhibition of this reaction is, therefore, of urgent interest. In this study, we implemented a QM/MM framework on OPRT derived from Saccharomyces cerevisiae to obtain insights into the competitive binding of OA and OA-mimetic inhibitors by quantifying their interactions with OPRT. 4-Hydroxy-6-methylpyridin-2(1H) one showed the best inhibiting activity among the structurally similar OA-mimetic inhibitors, as quantified from the binding energetics. Our analysis of protein-ligand interactions unveiled the association of this inhibitory ligand with a strong network of hydrogen bonds, a large contribution of hydrophobic contacts, and bridging water molecules in the binding site. The ortho-substituted CH3 group in the compound resulted in a large population of π-electrons in the aromatic ring of this inhibitor, supporting the ligand binding further.
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Affiliation(s)
- Shashi Kumar
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - N N Subrahmanyeswara Rao
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - K S S V Prasad Reddy
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Manjusha C Padole
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Parag A Deshpande
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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2
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Fischer G. The chemistry of citrazinic acid (2,6-dihydroxyisonicotinic acid). ADVANCES IN HETEROCYCLIC CHEMISTRY 2023. [DOI: 10.1016/bs.aihch.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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3
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Lin S, Liu C, Zhao X, Han X, Li X, Ye Y, Li Z. Recent Advances of Pyridinone in Medicinal Chemistry. Front Chem 2022; 10:869860. [PMID: 35402370 PMCID: PMC8984125 DOI: 10.3389/fchem.2022.869860] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 03/02/2022] [Indexed: 12/11/2022] Open
Abstract
Pyridinones have been adopted as an important block in medicinal chemistry that could serve as hydrogen bond donors and acceptors. With the help of feasible synthesis routes via established condensation reactions, the physicochemical properties of such a scaffold could be manipulated by adjustment of polarity, lipophilicity, and hydrogen bonding, and eventually lead to its wide application in fragment-based drug design, biomolecular mimetics, and kinase hinge-binding motifs. In addition, most pyridinone derivatives exhibit various biological activities ranging from antitumor, antimicrobial, anti-inflammatory, and anticoagulant to cardiotonic effects. This review focuses on recent contributions of pyridinone cores to medicinal chemistry, and addresses the structural features and structure–activity relationships (SARs) of each drug-like molecule. These advancements contribute to an in-depth understanding of the potential of this biologically enriched scaffold and expedite the development of its new applications in drug discovery.
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Affiliation(s)
- Shibo Lin
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
- *Correspondence: Shibo Lin,
| | - Chun Liu
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
| | - Xiaotian Zhao
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
| | - Xiao Han
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
| | - Xuanhao Li
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
| | - Yongqin Ye
- Department of Pharmacy, Chengdu Second People’s Hospital, Chengdu, China
| | - Zheyu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu, China
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Miggiano R, Morrone C, Rossi F, Rizzi M. Targeting Genome Integrity in Mycobacterium Tuberculosis: From Nucleotide Synthesis to DNA Replication and Repair. Molecules 2020; 25:E1205. [PMID: 32156001 PMCID: PMC7179400 DOI: 10.3390/molecules25051205] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
Mycobacterium tuberculosis (MTB) is the causative agent of tuberculosis (TB), an ancient disease which still today causes 1.4 million deaths worldwide per year. Long-term, multi-agent anti-tubercular regimens can lead to the anticipated non-compliance of the patient and increased drug toxicity, which in turn can contribute to the emergence of drug-resistant MTB strains that are not susceptible to first- and second-line available drugs. Hence, there is an urgent need for innovative antitubercular drugs and vaccines. A number of biochemical processes are required to maintain the correct homeostasis of DNA metabolism in all organisms. Here we focused on reviewing our current knowledge and understanding of biochemical and structural aspects of relevance for drug discovery, for some such processes in MTB, and particularly DNA synthesis, synthesis of its nucleotide precursors, and processes that guarantee DNA integrity and genome stability. Overall, the area of drug discovery in DNA metabolism appears very much alive, rich of investigations and promising with respect to new antitubercular drug candidates. However, the complexity of molecular events that occur in DNA metabolic processes requires an accurate characterization of mechanistic details in order to avoid major flaws, and therefore the failure, of drug discovery approaches targeting genome integrity.
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Affiliation(s)
- Riccardo Miggiano
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy; (C.M.); (F.R.)
| | | | | | - Menico Rizzi
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy; (C.M.); (F.R.)
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Li J, Tan H, An Y, Shao Z, Zhao S. Synthesis and DABCO‐induced demethylation of 3‐cyano‐4‐methoxy‐2‐pyridone derivatives. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jing Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Hong‐Ru Tan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Yu‐Long An
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Zhi‐Yu Shao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Sheng‐Yin Zhao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
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QM/MM analysis of effect of divalent metal ions on OPRT action. Comput Biol Chem 2018; 74:80-85. [DOI: 10.1016/j.compbiolchem.2018.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 11/19/2022]
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Ershov OV, Ievlev MY, Belikov MY, Fedoseev SV. Synthesis and spectroscopic studies of 3-carbamoylisonicotinic acid derivatives. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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8
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Structural investigations on orotate phosphoribosyltransferase from Mycobacterium tuberculosis, a key enzyme of the de novo pyrimidine biosynthesis. Sci Rep 2017; 7:1180. [PMID: 28446777 PMCID: PMC5430920 DOI: 10.1038/s41598-017-01057-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 03/20/2017] [Indexed: 02/02/2023] Open
Abstract
The Mycobacterium tuberculosis orotate phosphoribosyltransferase (MtOPRT) catalyses the conversion of α-D-5-phosphoribosyl-1-pyrophosphate (PRPP) and orotate (OA) in pyrophosphate and orotidine 5'-monophosphate (OMP), in presence of Mg2+. This enzyme is the only responsible for the synthesis of orotidine 5'-monophosphate, a key precursor in the de novo pyrimidine biosynthesis pathway, making MtOPRT an attractive drug target for the development of antitubercular agents. We report the crystal structures of MtOPRT in complex with PRPP (2.25 Å resolution), inorganic phosphate (1.90 Å resolution) and the exogenous compound Fe(III) dicitrate (2.40 Å resolution). The overall structure of the mycobacterial enzyme is highly similar to those described for other OPRTases, with the "flexible loop" assuming a well define conformation and making specific contacts with the Fe(III)-dicitrate complex. The structures here reported add to the knowledge of a potential drug target for tuberculosis, and will provide a useful tool for the structure-based drug design of potent enzyme inhibitors.
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Abstract
The development and application of a highly versatile suite of tools for mycobacterial genetics, coupled with widespread use of "omics" approaches to elucidate the structure, function, and regulation of mycobacterial proteins, has led to spectacular advances in our understanding of the metabolism and physiology of mycobacteria. In this article, we provide an update on nucleotide metabolism and DNA replication in mycobacteria, highlighting key findings from the past 10 to 15 years. In the first section, we focus on nucleotide metabolism, ranging from the biosynthesis, salvage, and interconversion of purine and pyrimidine ribonucleotides to the formation of deoxyribonucleotides. The second part of the article is devoted to DNA replication, with a focus on replication initiation and elongation, as well as DNA unwinding. We provide an overview of replication fidelity and mutation rates in mycobacteria and summarize evidence suggesting that DNA replication occurs during states of low metabolic activity, and conclude by suggesting directions for future research to address key outstanding questions. Although this article focuses primarily on observations from Mycobacterium tuberculosis, it is interspersed, where appropriate, with insights from, and comparisons with, other mycobacterial species as well as better characterized bacterial models such as Escherichia coli. Finally, a common theme underlying almost all studies of mycobacterial metabolism is the potential to identify and validate functions or pathways that can be exploited for tuberculosis drug discovery. In this context, we have specifically highlighted those processes in mycobacterial DNA replication that might satisfy this critical requirement.
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Stavrakov G, Valcheva V, Voynikov Y, Philipova I, Atanasova M, Konstantinov S, Peikov P, Doytchinova I. Design, Synthesis, and Antimycobacterial Activity of Novel Theophylline-7-Acetic Acid Derivatives With Amino Acid Moieties. Chem Biol Drug Des 2015; 87:335-41. [PMID: 26502828 DOI: 10.1111/cbdd.12676] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 09/13/2015] [Accepted: 10/12/2015] [Indexed: 01/18/2023]
Abstract
The theophylline-7-acetic acid (7-TAA) scaffold is a promising novel lead compound for antimycobacterial activity. Here, we derive a model for antitubercular activity prediction based on 14 7-TAA derivatives with amino acid moieties and their methyl esters. The model is applied to a combinatorial library, consisting of 40 amino acid and methyl ester derivatives of 7-TAA. The best three predicted compounds are synthesized and tested against Mycobacterium tuberculosis H37Rv. All of them are stable, non-toxic against human cells and show antimycobacterial activity in the nanomolar range being 60 times more active than ethambutol.
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Affiliation(s)
- Georgi Stavrakov
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
| | - Violeta Valcheva
- Institute of Microbiology, Bulgarian Academy of Sciences, 26 Akad. Bonchev St., Sofia, 1113, Bulgaria
| | - Yulian Voynikov
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
| | - Irena Philipova
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, 9 Acad. Bonchev St., Sofia, 1113, Bulgaria
| | - Mariyana Atanasova
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
| | - Spiro Konstantinov
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
| | - Plamen Peikov
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
| | - Irini Doytchinova
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav St., Sofia, 1000, Bulgaria
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11
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An organism-independent unified model for activity of orotate phosphoribosyltransferases for orotidine monophosphate synthesis. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2015.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Stavrakov G, Valcheva V, Philipova I, Doytchinova I. Design of novel camphane-based derivatives with antimycobacterial activity. J Mol Graph Model 2014; 51:7-12. [PMID: 24859319 DOI: 10.1016/j.jmgm.2014.04.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 04/02/2014] [Accepted: 04/21/2014] [Indexed: 01/19/2023]
Abstract
Although tuberculosis (TB) continues to be one of the leading infectious disease killers globally, it is curable and preventable. Despite the existence of safe, well tolerated and effective drugs used in the TB treatment, the interest in new entities, combinations and regimens increases during the last 10 years. Recently, we reported for a new class of anti-TB agents - camphane-based derivatives with nanomolar activity against Mycobacterium tuberculosis strains. The quantitative structure-activity relationship (QSAR) study on 12 compounds revealed several structural requirements for antimycobacterial activity: two hydrogen bond donors, two or three rings and no large branched substituents. Here, we describe the design of a set of nine novel camphane-based derivatives following these requirements. The compounds were synthesized and tested against M. tuberculosis strain H37Rv. Four of them showed activities in the nanomolar range, significantly higher than the activities in the initial set. The QSAR study based on all 21 derivatives pointed to two main structural requirements for anti-TB activity: two hydrogen bond donors and a side chain with aromatic ring.
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Affiliation(s)
- Georgi Stavrakov
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav st., Sofia 1000, Bulgaria
| | - Violeta Valcheva
- Institute of Microbiology, Bulgarian Academy of Sciences, 26 Akad. Bonchev st., Sofia 1113, Bulgaria
| | - Irena Philipova
- Institute of Organic Chemistry, Bulgarian Academy of Sciences, 9 Acad. Bonchev st., Sofia 1113, Bulgaria
| | - Irini Doytchinova
- Faculty of Pharmacy, Medical University of Sofia, 2 Dunav st., Sofia 1000, Bulgaria.
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Sukach VA, Tkachuk VM, Shoba VM, Pirozhenko VV, Rusanov EB, Chekotilo AA, Röschenthaler GV, Vovk MV. Control of Regio- and Enantioselectivity in the Asymmetric Organocatalytic Addition of Acetone to 4-(Trifluoromethyl)pyrimidin-2(1H)-ones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301542] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Zhang Y, Evans GB, Clinch K, Crump DR, Harris LD, Fröhlich RFG, Tyler PC, Hazleton KZ, Cassera MB, Schramm VL. Transition state analogues of Plasmodium falciparum and human orotate phosphoribosyltransferases. J Biol Chem 2013; 288:34746-54. [PMID: 24158442 DOI: 10.1074/jbc.m113.521955] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The survival and proliferation of Plasmodium falciparum parasites and human cancer cells require de novo pyrimidine synthesis to supply RNA and DNA precursors. Orotate phosphoribosyltransferase (OPRT) is an indispensible component in this metabolic pathway and is a target for antimalarials and antitumor drugs. P. falciparum (Pf) and Homo sapiens (Hs) OPRTs are characterized by highly dissociative transition states with ribocation character. On the basis of the geometrical and electrostatic features of the PfOPRT and HsOPRT transition states, analogues were designed, synthesized, and tested as inhibitors. Iminoribitol mimics of the ribocation transition state in linkage to pyrimidine mimics using methylene or ethylene linkers gave dissociation constants (Kd) as low as 80 nM. Inhibitors with pyrrolidine groups as ribocation mimics displayed slightly weaker binding affinities for OPRTs. Interestingly, p-nitrophenyl riboside 5'-phosphate bound to OPRTs with Kd values near 40 nM. Analogues designed with a C5-pyrimidine carbon-carbon bond to ribocation mimics gave Kd values in the range of 80-500 nM. Acyclic inhibitors with achiral serinol groups as the ribocation mimics also displayed nanomolar inhibition against OPRTs. In comparison with the nucleoside derivatives, inhibition constants of their corresponding 5'-phosphorylated transition state analogues are largely unchanged, an unusual property for a nucleotide-binding site. In silico docking of the best inhibitor into the HsOPRT active site supported an extensive hydrogen bond network associated with the tight binding affinity. These OPRT transition state analogues identify crucial components of potent inhibitors targeting OPRT enzymes. Despite their tight binding to the targets, the inhibitors did not kill cultured P. falciparum.
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Affiliation(s)
- Yong Zhang
- From the Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461 and
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Machado P, Ritter E, dos Santos AJB, Ev Neves C, Basso LA, Santos DS. Ultrasound-assisted improvement of drug solubility: a simple and useful method for the formation of salts from 4-hydroxy-6-methyl-3-nitropyridin-2(1H)-one. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-0948-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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