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Zahorska E, Kuhaudomlarp S, Minervini S, Yousaf S, Lepsik M, Kinsinger T, Hirsch AKH, Imberty A, Titz A. A rapid synthesis of low-nanomolar divalent LecA inhibitors in four linear steps from d-galactose pentaacetate. Chem Commun (Camb) 2020; 56:8822-8825. [DOI: 10.1039/d0cc03490h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Design and four step synthesis of simple, readily accessible low-nanomolar divalent LecA ligands with selectivity over human galectin-1.
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Affiliation(s)
- Eva Zahorska
- Chemical Biology of Carbohydrates
- Helmholtz Institute for Pharmaceutical Research Saarland
- Helmholtz Centre for Infection Research
- 66123 Saarbrücken
- Germany
| | | | - Saverio Minervini
- Chemical Biology of Carbohydrates
- Helmholtz Institute for Pharmaceutical Research Saarland
- Helmholtz Centre for Infection Research
- 66123 Saarbrücken
- Germany
| | - Sultaan Yousaf
- Chemical Biology of Carbohydrates
- Helmholtz Institute for Pharmaceutical Research Saarland
- Helmholtz Centre for Infection Research
- 66123 Saarbrücken
- Germany
| | - Martin Lepsik
- Université Grenoble Alpes
- CNRS
- CERMAV
- 38000 Grenoble
- France
| | - Thorsten Kinsinger
- Chemical Biology of Carbohydrates
- Helmholtz Institute for Pharmaceutical Research Saarland
- Helmholtz Centre for Infection Research
- 66123 Saarbrücken
- Germany
| | - Anna K. H. Hirsch
- Deutsches Zentrum für Infektionsforschung (DZIF)
- Standort Hannover-Braunschweig
- 38124 Braunschweig
- Germany
- Department of Pharmacy
| | - Anne Imberty
- Université Grenoble Alpes
- CNRS
- CERMAV
- 38000 Grenoble
- France
| | - Alexander Titz
- Chemical Biology of Carbohydrates
- Helmholtz Institute for Pharmaceutical Research Saarland
- Helmholtz Centre for Infection Research
- 66123 Saarbrücken
- Germany
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Lepsik M, Sommer R, Kuhaudomlarp S, Lelimousin M, Paci E, Varrot A, Titz A, Imberty A. Induction of rare conformation of oligosaccharide by binding to calcium-dependent bacterial lectin: X-ray crystallography and modelling study. Eur J Med Chem 2019; 177:212-220. [PMID: 31146126 DOI: 10.1016/j.ejmech.2019.05.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 05/17/2019] [Accepted: 05/17/2019] [Indexed: 11/29/2022]
Abstract
Pathogenic micro-organisms utilize protein receptors (lectins) in adhesion to host tissues, a process that in some cases relies on the interaction between lectins and human glycoconjugates. Oligosaccharide epitopes are recognized through their three-dimensional structure and their flexibility is a key issue in specificity. In this paper, we analysed by X-ray crystallography the structures of the LecB lectin from two strains of Pseudomonas aeruginosa in complex with Lewis x oligosaccharide present on cell surfaces of human tissues. An unusual conformation of the glycan was observed in all binding sites with a non-canonical syn orientation of the N-acetyl group of N-acetyl-glucosamine. A PDB-wide search revealed that such an orientation occurs only in 4% of protein/carbohydrate complexes. Theoretical chemistry calculations showed that the observed conformation is unstable in solution but stabilised by the lectin. A reliable description of LecB/Lewis x complex by force field-based methods had proven especially challenging due to the special feature of the binding site, two closely apposed Ca2+ ions which induce strong charge delocalisation. By comparing various force-field parametrisations, we propose a general strategy which will be useful in near future for designing carbohydrate-based ligands (glycodrugs) against other calcium-dependent protein receptors.
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Affiliation(s)
- Martin Lepsik
- Université Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France.
| | - Roman Sommer
- Chemical Biology of Carbohydrates, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, D-66123, Saarbrücken, Germany; Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany; Department of Pharmacy, Saarland University, D-66123, Saarbrücken, Germany
| | | | | | - Emanuele Paci
- Astbury Centre & School of Molecular and Cellular Biology, University of Leeds, Leeds, UK
| | - Annabelle Varrot
- Université Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France
| | - Alexander Titz
- Chemical Biology of Carbohydrates, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, D-66123, Saarbrücken, Germany; Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany; Department of Pharmacy, Saarland University, D-66123, Saarbrücken, Germany
| | - Anne Imberty
- Université Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France.
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Ajani H, Jansa J, Köprülüoğlu C, Hobza P, Kryštof V, Lyčka A, Lepsik M. Imidazo[1,2-c
]pyrimidin-5(6H
)-one as a novel core of cyclin-dependent kinase 2 inhibitors: Synthesis, activity measurement, docking, and quantum mechanical scoring. J Mol Recognit 2018; 31:e2720. [DOI: 10.1002/jmr.2720] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/26/2018] [Accepted: 03/21/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Haresh Ajani
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Prague 6 Czech Republic
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry; Palacký University; Olomouc Czech Republic
| | - Josef Jansa
- Research Institute for Organic Syntheses (VUOS); Pardubice-Rybitví Czech Republic
- Department of Organic Chemistry, Faculty of Science; Palacký University; Olomouc Czech Republic
| | - Cemal Köprülüoğlu
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Prague 6 Czech Republic
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry; Palacký University; Olomouc Czech Republic
| | - Pavel Hobza
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences; Prague 6 Czech Republic
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry; Palacký University; Olomouc Czech Republic
| | - Vladimír Kryštof
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science; Palacký University and Institute of Experimental Botany; Olomouc Czech Republic
| | - Antonín Lyčka
- Research Institute for Organic Syntheses (VUOS); Pardubice-Rybitví Czech Republic
- Faculty of Science; University of Hradec Králové; Hradec Králové Czech Republic
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Kollareddy M, Zheleva D, Dzubak P, Brahmkshatriya PS, Lepsik M, Hajduch M. Aurora kinase inhibitors: progress towards the clinic. Invest New Drugs 2012; 30:2411-32. [PMID: 22350019 PMCID: PMC3484309 DOI: 10.1007/s10637-012-9798-6] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 01/29/2012] [Indexed: 11/29/2022]
Abstract
The Aurora kinases (serine/threonine kinases) were discovered in 1995 during studies of mutant alleles associated with abnormal spindle pole formation in Drosophila melanogaster. They soon became the focus of much attention because of their importance in human biology and association with cancer. Aurora kinases are essential for cell division and are primarily active during mitosis. Following their identification as potential targets for cancer chemotherapy, many Aurora kinase inhibitors have been discovered, and are currently under development. The binding modes of Aurora kinase inhibitors to Aurora kinases share specific hydrogen bonds between the inhibitor core and the back bone of the kinase hinge region, while others parts of the molecules may point to different parts of the active site via noncovalent interactions. Currently there are about 30 Aurora kinase inhibitors in different stages of pre-clinical and clinical development. This review summarizes the characteristics and status of Aurora kinase inhibitors in preclinical, Phase I, and Phase II clinical studies, with particular emphasis on the mechanisms of action and resistance to these promising anticancer agents. We also discuss the validity of Aurora kinases as oncology targets, on/off-target toxicities, and other important aspects of overall clinical performance and future of Aurora kinase inhibitors.
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Affiliation(s)
- Madhu Kollareddy
- Laboratory of Experimental Medicine, Institute of Molecular and Translational Medicine, Palacky University, Puskinova 6, Olomouc, 77520, Czech Republic
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Brynda J, Rezacova P, Fabry M, Horejsi M, Stouracova R, Sedlacek J, Soucek M, Hradilek M, Lepsik M, Konvalinka J. A phenylnorstatine inhibitor binding to HIV-1 protease: geometry, protonation, and subsite-pocket interactions analyzed at atomic resolution. J Med Chem 2004; 47:2030-6. [PMID: 15056001 DOI: 10.1021/jm031105q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The X-ray structure of a complex of HIV-1 protease (PR) with a phenylnorstatine inhibitor Z-Pns-Phe-Glu-Glu-NH(2) has been determined at 1.03 A, the highest resolution so far reported for any HIV PR complex. The inhibitor shows subnanomolar K(i) values for both the wild-type PR and the variant representing one of the most common mutations linked to resistance development. The structure comprising the phenylnorstatine moiety of (2R,3S)-chirality displays a unique pattern of hydrogen bonding to the two catalytic aspartate residues. This high resolution makes it possible to assess the donor and acceptor relations of this hydrogen bonding and to indicate a proton shared by the two catalytic residues. A structural mechanism for the unimpaired inhibition of the protease Val82Ala mutant is also suggested, based on energy calculations and analyses.
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Affiliation(s)
- Jiri Brynda
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16637 Prague 6, Czech Republic.
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