1
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Siziya IN, Lim HJ, Baek S, Lee S, Seo MJ. Mannosidase-inhibiting iminosugar production by recombinant Corynebacterium glutamicum harboring the 1-deoxynojirimycin biosynthetic gene cluster. Int J Biol Macromol 2024; 278:134858. [PMID: 39163968 DOI: 10.1016/j.ijbiomac.2024.134858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 08/12/2024] [Accepted: 08/17/2024] [Indexed: 08/22/2024]
Abstract
The iminosugar class of carbohydrate-active enzyme inhibitors has therapeutic applications in metabolic syndrome conditions, viral infections and cancer. Compared to chemical synthesis, microbial iminosugar production has benefits of cost, sustainability and optimization. In this study, the 1-deoxynojirimycin (DNJ) biosynthetic gene cluster from Bacillus velezensis MBLB0692, and its individual genes, were cloned into Corynebacterium glutamicum (Cg). Characterizations of the encoded aminotransferase GabT1, phosphatase Yktc1, and dehydrogenase GutB1, were performed with purified enzymes and whole cell biocatalysts bearing individual and clustered (TYB) genes. GabT1 showed a variable pattern in its half-reaction with a slow turnover. GutB1 was an alkaline dehydrogenase with a broad substrate specificity and no divalent ion dependency while the zinc-dependent phosphatase Yktc1 had substrate specificity that was both pH- and ion-dependent. The CgYktc1 and CgGutB1 whole cells were viable biocatalysts with wider ranges of substrates than their enzyme counterparts. The CgTYB cells produced mannosidase-inhibiting iminosugars corresponding to mannojirimycin dehydrate (162 m/z) and deoxymannojirimycin (164 m/z). Mannosidase inhibitors have been found to be effective in treating orphan diseases, cancer and viral infections, and their biosynthesis by recombinant C. glutamicum can be optimized for industrial production and novel drug development.
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Affiliation(s)
- Inonge Noni Siziya
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; Research Center for Bio Materials & Process Development, Incheon National University, Incheon 22012, Republic of Korea
| | - Hyo Jung Lim
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea
| | - Suhyeon Baek
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Sanggil Lee
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; Department of Food Science and Nutrition, College of Fisheries Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Myung-Ji Seo
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; Research Center for Bio Materials & Process Development, Incheon National University, Incheon 22012, Republic of Korea; Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea.
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2
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Gao FT, Wu QK, Zhang M, Shimadate Y, Qian G, Song YY, Kato A, Li YX, Jia YM, Fleet GWJ, Yu CY. Design and synthesis of 6-C-alkyl-DMDP type nanomolar inhibitors of β-galactosidase and β-glucosidase based on broussonetine S and related derivatives. Eur J Med Chem 2024; 275:116570. [PMID: 38878517 DOI: 10.1016/j.ejmech.2024.116570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/31/2024] [Accepted: 06/02/2024] [Indexed: 07/12/2024]
Abstract
Broussonetine S (9), its C-1' and C-10' stereoisomers, and their corresponding enantiomers have been synthesized from enantiomeric arabinose-derived cyclic nitrones, with cross metathesis (CM), epoxidation and Keck asymmetric allylation as key steps. Glycosidase inhibition assays showed that broussonetine S (9) and its C-10' epimer (10'-epi-9) were nanomolar inhibitors of bovine liver β-galactosidase and β-glucosidase; while their C-1' stereoisomers were 10-fold less potent towards these enzymes. The glycosidase inhibition results and molecular docking calculations revealed the importance of the configurations of pyrrolidine core and C-1' hydroxyl for inhibition potency and spectra. Together with the docking calculations we previously reported for α-1-C-alkyl-DAB derivatives, we designed and synthesized a series of 6-C-alkyl-DMDP derivatives with very simple alkyl chains. The inhibition potency of these derivatives was enhanced by increasing the length of the side chain, and maintained at nanomolar scale inhibitions of bovine liver β-glucosidase and β-galactosidase after the alkyl groups are longer than eight or ten carbons for the (6R)-C-alkyl-DMDP derivatives and their 6S epimers, respectively. Molecular docking calculations indicated that each series of 6-C-alkyl-DMDP derivatives resides in the same active site of β-glucosidase or β-galactosidase with basically similar binding conformations, and their C-6 long alkyl chains extend outwards along the hydrophobic groove with similar orientations. The increasing inhibitions of β-glucosidase and β-galactosidase with the number of carbon atoms in the side chains may be explained by improved adaptability of longer alkyl chains in the hydrophobic grooves. In addition, the lower β-glucosidase and β-galactosidase inhibitions of (6S)-C-alkyl-DMDP derivatives than their C-6 R stereoisomers can be attributed to the misfolding of their alkyl chains and resulted decreased adaptability in the hydrophobic groove. The work reported herein is valuable for design and development of more potent and selective inhibitors of β-galactosidase and β-glucosidase, which have potential in treatment of lysosomal storage diseases. Furthermore, part of the 6-C-alkyl-DMDP derivatives and their enantiomers were also tested as potential anti-cancer agents; all the compounds tested were found with moderate cytotoxic effects on MKN45 cells, which would indicate potential applications of these iminosugars in development of novel anticancer agents.
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Affiliation(s)
- Feng-Teng Gao
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing-Kun Wu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; School of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Ming Zhang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuna Shimadate
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Gong Qian
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Laboratory of Immunology for Environment and Health, Jinan, 250014, Shandong, China
| | - Ying-Ying Song
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Laboratory of Immunology for Environment and Health, Jinan, 250014, Shandong, China
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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3
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Deswal N, Takkar P, Kaur L, Ojha H, Kumar R. Synthesis and bio-evaluation of newer dihydropyridines and tetrahydropyridines based glycomimetic azasugars. Bioorg Chem 2024; 145:107224. [PMID: 38401361 DOI: 10.1016/j.bioorg.2024.107224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/31/2024] [Accepted: 02/16/2024] [Indexed: 02/26/2024]
Abstract
This study presents the synthesis and bio-evaluation of new triazolylated dihydropyridine and tetrahydropyridine azasugar scaffolds (F1-14). Azasugar glycomimetics are the synthetic substances that mimic the structural and functional characteristics of natural carbohydrates showcasing promising potential as therapeutic agents for diabetes. The α-glucosidase inhibitory activity of synthesized final compounds were evaluated against the commercially available α-glucosidase enzyme. Majority of the screened compounds displayed excellent inhibition with IC50 values ranging from 2.12 to 75.11 μM, when compared to the standard drug Acarbose. Particularly, compound F5 with IC50 value of 2.12 μM was found to be the most active compound among the series. Further molecular docking studies of selected ligands were performed to investigate the binding interactions with enzyme active sites. Their specific binding patterns have been analysed with the binding sites of Saccharomyces cerevisiae α-glucosidase. These findings suggest these candidates as the potential leads for the anti-diabetic activity.
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Affiliation(s)
- Nidhi Deswal
- Bio-organic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Priya Takkar
- Bio-organic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Lajpreet Kaur
- Department of Radiological, Nuclear and Imaging Science, Institute of Nuclear Medicine and Allied Sciences, Defence Research Development and Organization, Delhi 110054, India
| | - Himanshu Ojha
- Department of Radiological, Nuclear and Imaging Science, Institute of Nuclear Medicine and Allied Sciences, Defence Research Development and Organization, Delhi 110054, India
| | - Rakesh Kumar
- Bio-organic Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India.
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4
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Zarei S, Motard M, Cecioni S. Stable Amide Activation of N-Acetylated Glycosamines for the Synthesis of Fused Polycyclic Glycomimetics. Org Lett 2024; 26:204-209. [PMID: 38166160 DOI: 10.1021/acs.orglett.3c03803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
N-Acetylation of carbohydrates is an underexplored target for chemoselective derivatization and generation of glycomimetic scaffolds. Through mild amide activation, we report that N-acetimidoyl heterocycles are stable in neutral or basic conditions yet are excellent leaving groups through acid catalysis. While this specific reactivity could prove broadly useful in amide activation strategies, stably activated N-acetylated sugars can also be diversified using libraries of hydrazides. We optimized an acid-catalyzed one-pot sequence that includes nucleophilic displacement, cyclodehydration, and intramolecular glycosylation to ultimately deliver pyranosides fused to morpholines or piperazines. This strategy of stable activation followed by acid-triggered reaction sequences exemplifies the efficient assembly of 3D-rich fused glycomimetic libraries.
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Affiliation(s)
- Samaneh Zarei
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec H3C 3J7, Canada
| | - Mélina Motard
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec H3C 3J7, Canada
| | - Samy Cecioni
- Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec H3C 3J7, Canada
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5
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Borlandelli V, Offen W, Moroz O, Nin-Hill A, McGregor N, Binkhorst L, Ishiwata A, Armstrong Z, Artola M, Rovira C, Davies GJ, Overkleeft HS. β-l- Arabinofurano-cyclitol Aziridines Are Covalent Broad-Spectrum Inhibitors and Activity-Based Probes for Retaining β-l-Arabinofuranosidases. ACS Chem Biol 2023; 18:2564-2573. [PMID: 38051515 PMCID: PMC10728902 DOI: 10.1021/acschembio.3c00558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 12/07/2023]
Abstract
GH127 and GH146 microorganismal retaining β-l-arabinofuranosidases, expressed by human gut microbiomes, feature an atypical catalytic domain and an unusual mechanism of action. We recently reported that both Bacteroides thetaiotaomicron BtGH146 and Bifidobacterium longum HypBA1 are inhibited by β-l-arabinofuranosyl cyclophellitol epoxide, supporting the action of a zinc-coordinated cysteine as a catalytic nucleophile, where in most retaining GH families, an aspartate or glutamate is employed. This work presents a panel of β-l-arabinofuranosyl cyclophellitol epoxides and aziridines as mechanism-based BtGH146/HypBA1 inhibitors and activity-based probes. The β-l-arabinofuranosyl cyclophellitol aziridines both inhibit and label β-l-arabinofuranosidase efficiently (however with different activities), whereas the epoxide-derived probes favor BtGH146 over HypBA1. These findings are accompanied by X-ray structural analysis of the unmodified β-l-arabinofuranosyl cyclophellitol aziridine in complex with both isozymes, which were shown to react by nucleophilic opening of the aziridine, at the pseudoanomeric carbon, by the active site cysteine nucleophile to form a stable thioether bond. Altogether, our activity-based probes may serve as chemical tools for the detection and identification of low-abundance β-l-arabinofuranosidases in complex biological samples.
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Affiliation(s)
- Valentina Borlandelli
- Bio-organic
Synthesis, Leiden Institute of Chemistry (LIC), Leiden University, Gorlaeus Laboratories, Einsteinweg 55, 2333
CC Leiden, The Netherlands
| | - Wendy Offen
- Department
of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10
5DD, United Kingdom
| | - Olga Moroz
- Department
of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10
5DD, United Kingdom
| | - Alba Nin-Hill
- Departament
de Química Inorgànica i Orgànica (Secció
de Química Orgànica), Institut
de Química Teòrica i Computacional (IQTCUB), Universitat
de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Nicholas McGregor
- Department
of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10
5DD, United Kingdom
| | - Lars Binkhorst
- Bio-organic
Synthesis, Leiden Institute of Chemistry (LIC), Leiden University, Gorlaeus Laboratories, Einsteinweg 55, 2333
CC Leiden, The Netherlands
| | - Akihiro Ishiwata
- RIKEN
Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zachary Armstrong
- Bio-organic
Synthesis, Leiden Institute of Chemistry (LIC), Leiden University, Gorlaeus Laboratories, Einsteinweg 55, 2333
CC Leiden, The Netherlands
| | - Marta Artola
- Bio-organic
Synthesis, Leiden Institute of Chemistry (LIC), Leiden University, Gorlaeus Laboratories, Einsteinweg 55, 2333
CC Leiden, The Netherlands
| | - Carme Rovira
- Departament
de Química Inorgànica i Orgànica (Secció
de Química Orgànica), Institut
de Química Teòrica i Computacional (IQTCUB), Universitat
de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Gideon J. Davies
- Department
of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10
5DD, United Kingdom
| | - Herman S. Overkleeft
- Bio-organic
Synthesis, Leiden Institute of Chemistry (LIC), Leiden University, Gorlaeus Laboratories, Einsteinweg 55, 2333
CC Leiden, The Netherlands
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6
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De Angelis M, Primitivo L, Sappino C, Centrella B, Lucarini C, Lanciotti L, Petti A, Odore D, D'Annibale A, Macchi B, Stefanizzi V, Cirigliano A, Rinaldi T, Righi G, Ricelli A. Stereocontrolled synthesis of new iminosugar lipophilic derivatives and evaluation of biological activities. Carbohydr Res 2023; 534:108984. [PMID: 37984279 DOI: 10.1016/j.carres.2023.108984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
Iminosugars' similarity to carbohydrates determines the exceptional potential for this class of polyhydroxylated alkaloids to serve as potential drug candidates for a wide variety of diseases such as diabetes, lysosomal storage diseases, cancer, bacterial and viral infections. The presence of lipophilic substituents has a significant impact on their biological activities. This work reports the synthesis of three new pyrrolidine lipophilic derivatives O-alkylated in C-6 position. The biological activities of our iminosugars' collection were tested in two cancer cell lines and, due to the pharmaceutical potential, in the model yeast system Saccharomyces cerevisiae to assess their toxicity.
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Affiliation(s)
- Martina De Angelis
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy.
| | - Ludovica Primitivo
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Carla Sappino
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Barbara Centrella
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Claudia Lucarini
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Lucrezia Lanciotti
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessia Petti
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Davide Odore
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Andrea D'Annibale
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Beatrice Macchi
- Department of Chemical Science and Technology, University of Rome "Tor Vergata", Via Cracovia, 50, 00133, Rome, Italy
| | - Valeria Stefanizzi
- Department of Chemical Science and Technology, University of Rome "Tor Vergata", Via Cracovia, 50, 00133, Rome, Italy
| | - Angela Cirigliano
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
| | - Teresa Rinaldi
- Department of Biology and Biotechnology, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Giuliana Righi
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessandra Ricelli
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
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7
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Males A, Kok K, Nin-Hill A, de Koster N, van den Beukel S, Beenakker TJM, van der Marel GA, Codée JDC, Aerts JMFG, Overkleeft HS, Rovira C, Davies GJ, Artola M. Trans-cyclosulfamidate mannose-configured cyclitol allows isoform-dependent inhibition of GH47 α-d-mannosidases through a bump-hole strategy. Chem Sci 2023; 14:13581-13586. [PMID: 38033892 PMCID: PMC10685318 DOI: 10.1039/d3sc05016e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 10/29/2023] [Indexed: 12/02/2023] Open
Abstract
Class I inverting exo-acting α-1,2-mannosidases (CAZY family GH47) display an unusual catalytic itinerary featuring ring-flipped mannosides, 3S1 → 3H4‡ → 1C4. Conformationally locked 1C4 compounds, such as kifunensine, display nanomolar inhibition but large multigene GH47 mannosidase families render specific "isoform-dependent" inhibition impossible. Here we develop a bump-and-hole strategy in which a new mannose-configured 1,6-trans-cyclic sulfamidate inhibits α-d-mannosidases by virtue of its 1C4 conformation. This compound does not inhibit the wild-type GH47 model enzyme by virtue of a steric clash, a "bump", in the active site. An L310S (a conserved residue amongst human GH47 enzymes) mutant of the model Caulobacter GH47 awoke 574 nM inhibition of the previously dormant inhibitor, confirmed by structural analysis of a 0.97 Å structure. Considering that L310 is a conserved residue amongst human GH47 enzymes, this work provides a unique framework for future biotechnological studies on N-glycan maturation and ER associated degradation by isoform-specific GH47 α-d-mannosidase inhibition through a bump-and-hole approach.
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Affiliation(s)
- Alexandra Males
- York Structural Biology Laboratory, Department of Chemistry, The University of York York YO10 5DD UK
| | - Ken Kok
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands
| | - Alba Nin-Hill
- Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica), Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona Martí i Franquès 1 08028 Barcelona Spain
- Fundació Catalana de Recerca i Estudis Avançats (ICREA) Passeig Lluís Companys 23 08010 Barcelona Spain
| | - Nicky de Koster
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands
| | - Sija van den Beukel
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands
| | - Thomas J M Beenakker
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry (LIC), Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Gijsbert A van der Marel
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry (LIC), Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Jeroen D C Codée
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry (LIC), Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Johannes M F G Aerts
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands
| | - Herman S Overkleeft
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry (LIC), Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Carme Rovira
- Departament de Química Inorgànica i Orgànica (Secció de Química Orgànica), Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona Martí i Franquès 1 08028 Barcelona Spain
- Fundació Catalana de Recerca i Estudis Avançats (ICREA) Passeig Lluís Companys 23 08010 Barcelona Spain
| | - Gideon J Davies
- York Structural Biology Laboratory, Department of Chemistry, The University of York York YO10 5DD UK
| | - Marta Artola
- Department of Medical Biochemistry, Leiden Institute of Chemistry (LIC), Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands
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8
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Kim Y, Li H, Choi J, Boo J, Jo H, Hyun JY, Shin I. Glycosidase-targeting small molecules for biological and therapeutic applications. Chem Soc Rev 2023; 52:7036-7070. [PMID: 37671645 DOI: 10.1039/d3cs00032j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Glycosidases are ubiquitous enzymes that catalyze the hydrolysis of glycosidic linkages in oligosaccharides and glycoconjugates. These enzymes play a vital role in a wide variety of biological events, such as digestion of nutritional carbohydrates, lysosomal catabolism of glycoconjugates, and posttranslational modifications of glycoproteins. Abnormal glycosidase activities are associated with a variety of diseases, particularly cancer and lysosomal storage disorders. Owing to the physiological and pathological significance of glycosidases, the development of small molecules that target these enzymes is an active area in glycoscience and medicinal chemistry. Research efforts carried out thus far have led to the discovery of numerous glycosidase-targeting small molecules that have been utilized to elucidate biological processes as well as to develop effective chemotherapeutic agents. In this review, we describe the results of research studies reported since 2018, giving particular emphasis to the use of fluorescent probes for detection and imaging of glycosidases, activity-based probes for covalent labelling of these enzymes, glycosidase inhibitors, and glycosidase-activatable prodrugs.
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Affiliation(s)
- Yujun Kim
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
| | - Hui Li
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
| | - Joohee Choi
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
| | - Jihyeon Boo
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
| | - Hyemi Jo
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
- Department of Drug Discovery, Data Convergence Drug Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
| | - Ji Young Hyun
- Department of Drug Discovery, Data Convergence Drug Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
| | - Injae Shin
- Department of Chemistry, Yonsei University, 03722 Seoul, Republic of Korea.
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9
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Lu H, Xie T, Wu Q, Hu Z, Luo Y, Luo F. Alpha-Glucosidase Inhibitory Peptides: Sources, Preparations, Identifications, and Action Mechanisms. Nutrients 2023; 15:4267. [PMID: 37836551 PMCID: PMC10574726 DOI: 10.3390/nu15194267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
With the change in people's lifestyle, diabetes has emerged as a chronic disease that poses a serious threat to human health, alongside tumor, cardiovascular, and cerebrovascular diseases. α-glucosidase inhibitors, which are oral drugs, have proven effective in preventing and managing this disease. Studies have suggested that bioactive peptides could serve as a potential source of α-glucosidase inhibitors. These peptides possess certain hypoglycemic activity and can effectively regulate postprandial blood glucose levels by inhibiting α-glucosidase activity, thus intervening and regulating diabetes. This paper provides a systematic summary of the sources, isolation, purification, bioavailability, and possible mechanisms of α-glucosidase inhibitory peptides. The sources of the α-glucosidase inhibitory peptides were introduced with emphasis on animals, plants, and microorganisms. This paper also points out the problems in the research process of α-glucosidase inhibitory peptide, with a view to providing certain theoretical support for the further study of this peptide.
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Affiliation(s)
- Han Lu
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Central South University of Forestry and Technology, Changsha 410004, China; (H.L.); (T.X.); (Q.W.); (Z.H.)
| | - Tiantian Xie
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Central South University of Forestry and Technology, Changsha 410004, China; (H.L.); (T.X.); (Q.W.); (Z.H.)
- Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qi Wu
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Central South University of Forestry and Technology, Changsha 410004, China; (H.L.); (T.X.); (Q.W.); (Z.H.)
| | - Zuomin Hu
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Central South University of Forestry and Technology, Changsha 410004, China; (H.L.); (T.X.); (Q.W.); (Z.H.)
| | - Yi Luo
- Department of Gastroenterology, Xiangya School of Medicine, Central South University, Changsha 410008, China;
| | - Feijun Luo
- Hunan Key Laboratory of Grain-Oil Deep Process and Quality Control, Central South University of Forestry and Technology, Changsha 410004, China; (H.L.); (T.X.); (Q.W.); (Z.H.)
- Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, China
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10
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Firoozpour L, Moghimi S, Salarinejad S, Toolabi M, Rafsanjani M, Pakrad R, Salmani F, Shokrolahi SM, Sadat Ebrahimi SE, Karima S, Foroumadi A. Synthesis, α-Glucosidase inhibitory activity and docking studies of Novel Ethyl 1,2,3-triazol-4-ylmethylthio-5,6-diphenylpyridazine-4-carboxylate derivatives. BMC Chem 2023; 17:66. [PMID: 37365646 DOI: 10.1186/s13065-023-00973-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
In this work, a novel series of pyridazine-triazole hybrid molecules were prepared and evaluated as inhibitors of rat intestinal α-glucosidase enzyme. Amongst all newly synthesized compounds, 10k showed good inhibition in the series with IC50 value of 1.7 µM which is 100 folds stronger than positive control, acarbose. The cytotoxicity revealed that this compound is not toxic against normal cell line, HDF. The docking studies showed that triazole ring plays an important role in the binding interactions with the active site. The insertion of compound 10k into the active pocket of α-glucosidase and formation of hydrogen bonds with Leu677 was observed from docking studies. The kinetic studies revealed that this compound has uncompetitive mode of inhibition against α-glucosidase enzyme.
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Affiliation(s)
- Loghman Firoozpour
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Setareh Moghimi
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Somayeh Salarinejad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa Toolabi
- Department of Medicinal Chemistry, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahdi Rafsanjani
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Roya Pakrad
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran
| | - Farzaneh Salmani
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran
| | - Seyed Mohammad Shokrolahi
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran
| | | | - Saeed Karima
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran
| | - Alireza Foroumadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
- Drug Design and Development Research Center, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.
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11
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Gutiérrez López MÁ, Tan ML, Frontera A, Matile S. The Origin of Anion-π Autocatalysis. JACS AU 2023; 3:1039-1051. [PMID: 37124310 PMCID: PMC10131205 DOI: 10.1021/jacsau.2c00656] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 05/03/2023]
Abstract
The autocatalysis of epoxide-opening ether cyclizations on the aromatic surface of anion-π catalysts stands out as a leading example of emergent properties expected from the integration of unorthodox interactions into catalysis. A working hypothesis was proposed early on, but the mechanism of anion-π autocatalysis has never been elucidated. Here, we show that anion-π autocatalysis is almost independent of peripheral crowding in substrate and product. Inaccessible asymmetric anion-π autocatalysis and sometimes erratic reproducibility further support that the origin of anion-π autocatalysis is more complex than originally assumed. The apparent long-distance communication without physical contact calls for the inclusion of water between substrate and product on the catalytic aromatic surface. Efficient anion-π autocatalysis around equimolar amounts but poor activity in dry solvents and with excess water indicate that this inclusion of water requires high precision. Computational models suggest that two water molecules transmit dual substrate activation by the product and serve as proton shuttles along antiparallel but decoupled hydrogen-bonded chains to delocalize and stabilize evolving charge density in the transition state by "anion-π double bonds". This new transition-state model of anion-π autocatalysis provides a plausible mechanism that explains experimental results and brings anion-π catalysis to an unprecedented level of sophistication.
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Affiliation(s)
- M. Ángeles Gutiérrez López
- Department
of Organic Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
- National
Centre of Competence in Research (NCCR) Molecular Systems Engineering
(MSE), CH-4002 Basel, Switzerland
| | - Mei-Ling Tan
- Department
of Organic Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
- National
Centre of Competence in Research (NCCR) Molecular Systems Engineering
(MSE), CH-4002 Basel, Switzerland
| | - Antonio Frontera
- Departament
de Química, Universitat de les Illes
Balears, SP-07122 Palma de Mallorca, Spain
| | - Stefan Matile
- Department
of Organic Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
- National
Centre of Competence in Research (NCCR) Molecular Systems Engineering
(MSE), CH-4002 Basel, Switzerland
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12
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Woo AYM, Aguilar Ramos MA, Narayan R, Richards-Corke KC, Wang ML, Sandoval-Espinola WJ, Balskus EP. Targeting the human gut microbiome with small-molecule inhibitors. NATURE REVIEWS. CHEMISTRY 2023; 7:319-339. [PMID: 37117817 DOI: 10.1038/s41570-023-00471-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/20/2023] [Indexed: 04/30/2023]
Abstract
The human gut microbiome is a complex microbial community that is strongly linked to both host health and disease. However, the detailed molecular mechanisms underlying the effects of these microorganisms on host biology remain largely uncharacterized. The development of non-lethal, small-molecule inhibitors that target specific gut microbial activities enables a powerful but underutilized approach to studying the gut microbiome and a promising therapeutic strategy. In this Review, we will discuss the challenges of studying this microbial community, the historic use of small-molecule inhibitors in microbial ecology, and recent applications of this strategy. We also discuss the evidence suggesting that host-targeted drugs can affect the growth and metabolism of gut microbes. Finally, we address the issues of developing and implementing microbiome-targeted small-molecule inhibitors and define important future directions for this research.
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Affiliation(s)
- Amelia Y M Woo
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
| | | | - Rohan Narayan
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
| | | | - Michelle L Wang
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
| | - Walter J Sandoval-Espinola
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
- Universidad Nacional de Asunción, Facultad de Ciencias Exactas y Naturales, Departamento de Biotecnología, Laboratorio de Biotecnología Microbiana, San Lorenzo, Paraguay
| | - Emily P Balskus
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA.
- Howard Hughes Medical Institute, Harvard University, Cambridge, MA, USA.
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13
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Demir M, Russelburg LP, Lin WJ, Trasviña-Arenas C, Huang B, Yuen P, Horvath M, David S. Structural snapshots of base excision by the cancer-associated variant MutY N146S reveal a retaining mechanism. Nucleic Acids Res 2023; 51:1034-1049. [PMID: 36631987 PMCID: PMC9943663 DOI: 10.1093/nar/gkac1246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/18/2022] [Accepted: 12/16/2022] [Indexed: 01/13/2023] Open
Abstract
DNA glycosylase MutY plays a critical role in suppression of mutations resulted from oxidative damage, as highlighted by cancer-association of the human enzyme. MutY requires a highly conserved catalytic Asp residue for excision of adenines misinserted opposite 8-oxo-7,8-dihydroguanine (OG). A nearby Asn residue hydrogen bonds to the catalytic Asp in structures of MutY and its mutation to Ser is an inherited variant in human MUTYH associated with colorectal cancer. We captured structural snapshots of N146S Geobacillus stearothermophilus MutY bound to DNA containing a substrate, a transition state analog and enzyme-catalyzed abasic site products to provide insight into the base excision mechanism of MutY and the role of Asn. Surprisingly, despite the ability of N146S to excise adenine and purine (P) in vitro, albeit at slow rates, N146S-OG:P complex showed a calcium coordinated to the purine base altering its conformation to inhibit hydrolysis. We obtained crystal structures of N146S Gs MutY bound to its abasic site product by removing the calcium from crystals of N146S-OG:P complex to initiate catalysis in crystallo or by crystallization in the absence of calcium. The product structures of N146S feature enzyme-generated β-anomer abasic sites that support a retaining mechanism for MutY-catalyzed base excision.
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Affiliation(s)
- Merve Demir
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | - L Peyton Russelburg
- School of Biological Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Wen-Jen Lin
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | | | - Beili Huang
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | - Philip K Yuen
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | - Martin P Horvath
- School of Biological Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Sheila S David
- Department of Chemistry, University of California, Davis, CA 95616, USA
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14
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Tseng PS, Ande C, Moremen KW, Crich D. Influence of Side Chain Conformation on the Activity of Glycosidase Inhibitors. Angew Chem Int Ed Engl 2023; 62:e202217809. [PMID: 36573850 PMCID: PMC9908843 DOI: 10.1002/anie.202217809] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Indexed: 12/28/2022]
Abstract
Substrate side chain conformation impacts reactivity during glycosylation and glycoside hydrolysis and is restricted by many glycosidases and glycosyltransferases during catalysis. We show that the side chains of gluco and manno iminosugars can be restricted to predominant conformations by strategic installation of a methyl group. Glycosidase inhibition studies reveal that iminosugars with the gauche,gauche side chain conformations are 6- to 10-fold more potent than isosteric compounds with the gauche,trans conformation; a manno-configured iminosugar with the gauche,gauche conformation is a 27-fold better inhibitor than 1-deoxymannojirimycin. The results are discussed in terms of the energetic benefits of preorganization, particularly when in synergy with favorable hydrophobic interactions. The demonstration that inhibitor side chain preorganization can favorably impact glycosidase inhibition paves the way for improved inhibitor design through conformational preorganization.
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Affiliation(s)
- Po-Sen Tseng
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA 30602 (USA),Department of Chemistry, University of Georgia, Athens, GA 30602 (USA),Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 (USA)
| | - Chennaiah Ande
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA 30602 (USA)
| | - Kelley W. Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 (USA),Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602 (USA)
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA 30602 (USA),Department of Chemistry, University of Georgia, Athens, GA 30602 (USA),Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 (USA)
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15
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Garg P, Manoj N. Structure of an iminosugar complex of a glycoside hydrolase family 5 lichenase provides insights into the active site. Biochimie 2023; 204:69-77. [PMID: 36084911 DOI: 10.1016/j.biochi.2022.09.001] [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: 10/11/2021] [Revised: 05/23/2022] [Accepted: 09/01/2022] [Indexed: 01/12/2023]
Abstract
TmCel5B is a lichenase belonging to glycoside hydrolase family 5 subfamily 36 (GH5_36). To gain insights into the active site of this subfamily which contains multifunctional endoglycanases, we determined the crystal structure of TmCel5B in complex with an iminosugar, 1-deoxynojiromycin (DNJ). DNJ is bound to the -1 subsite, making a network of non-covalent interactions with the acid/base residue Glu139, the nucleophile Glu259, and with other residues that are conserved across the GH5 family. The catalytic site displayed a Glu-Arg-Glu triad of the catalytic glutamates that is unique to the GH5_36 subfamily. Structural comparison of active sites of GH5_36 homologs revealed divergent residues and loop regions that are likely molecular determinants of homolog-specific properties. Furthermore, a comparative analysis of the binding modes of iminocyclitol complexes of GH5 homologs revealed the structural basis of their binding to GH5 glycosidases, in which the subsite binding location, the interactions of the ligand with specific conserved residues, and the electrostatic interactions of the catalytic glutamates with the ring nitrogen, are crucial.
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Affiliation(s)
- Puneet Garg
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Narayanan Manoj
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India.
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16
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Assies L, Mercier V, López‐Andarias J, Roux A, Sakai N, Matile S. The Dynamic Range of Acidity: Tracking Rules for the Unidirectional Penetration of Cellular Compartments. Chembiochem 2022; 23:e202200192. [PMID: 35535626 PMCID: PMC9400975 DOI: 10.1002/cbic.202200192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/09/2022] [Indexed: 12/03/2022]
Abstract
Labeled ammonium cations with pKa ∼7.4 accumulate in acidic organelles because they can be neutralized transiently to cross the membrane at cytosolic pH 7.2 but not at their internal pH<5.5. Retention in early endosomes with less acidic internal pH was achieved recently using weaker acids of up to pKa 9.8. We report here that primary ammonium cations with higher pKa 10.6, label early endosomes more efficiently. This maximized early endosome tracking coincides with increasing labeling of Golgi networks with similarly weak internal acidity. Guanidinium cations with pKa 13.5 cannot cross the plasma membrane in monomeric form and label the plasma membrane with selectivity for vesicles embarking into endocytosis. Self-assembled into micelles, guanidinium cations enter cells like arginine-rich cell-penetrating peptides and, driven by their membrane potential, penetrate mitochondria unidirectionally despite their high inner pH. The resulting tracking rules with an approximated dynamic range of pKa change ∼3.5 are expected to be generally valid, thus enabling the design of chemistry tools for biology research in the broadest sense. From a practical point of view, most relevant are two complementary fluorescent flipper probes that can be used to image the mechanics at the very beginning of endocytosis.
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Affiliation(s)
- Lea Assies
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
| | - Vincent Mercier
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
| | - Javier López‐Andarias
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
| | - Aurelien Roux
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
| | - Naomi Sakai
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
| | - Stefan Matile
- School of Chemistry and BiochemistryNCCR Chemical BiologyUniversity of Geneva1211GenevaSwitzerland
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17
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Liu X, Li F, Su L, Wang M, Jia T, Xu X, Li X, Wei C, Luo C, Chen S, Chen H. Design and synthesis of novel benzimidazole-iminosugars linked a substituted phenyl group and their inhibitory activities against β-glucosidase. Bioorg Chem 2022; 127:106016. [PMID: 35841671 DOI: 10.1016/j.bioorg.2022.106016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/13/2022] [Accepted: 07/06/2022] [Indexed: 11/28/2022]
Abstract
A series of novel benzimidazole-iminosugars linked a (substuituted) phenyl group on benzene ring of benzimidazole 5(a-p) and 6(a-p) have been rationally designed and conveniently synthesized through Suzuki coupling reaction in high yields. All compounds have been evaluated for their inhibitory activities against β-glucosidase (almond). Six compounds 5d, 6d, 6e, 6i, 6n, and 6p showed more significant inhibitory activities with IC50 values in the range of 0.03-0.08 μM, almost 10-fold improved than that of the parent analogue 4, and much higher than that of the positive control castanospermine. The additional phenyl ring and the electron donating groups on it would be beneficial for the activity. Compounds 6d, 6n, and 4 had been chosen to be tested for their inhibition types against β-glucosidase. Interestingly, three compounds have different inhibition types although they had very similar structure. Their Ki values were calculated to be 0.02 ± 0.01 μM, 0.02 ± 0.01 μM, and 0.66 ± 0.14 μM, respectively. The equilibrium dissociation constant (KD) for 6d, 6n, and 4 and β-glucosidase was 0.04 μM, 0.03 μM and 0.45 μM by the ITC-based assay, respectively. Molecular docking work suggests that such benzimidazole-iminosugars derivatives might bind to the active site of β-glucosidase mainly through hydrogen bonds, the additional phenyl ring towards the solvent-exposed region played an important effect on their inhibitory activity against β-glucosidase.
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Affiliation(s)
- Xu Liu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Fengxin Li
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Lulu Su
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Mingchen Wang
- The Center for Chemical Biology, Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Life Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Tongguan Jia
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Xiaoming Xu
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Xiaoliu Li
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Chao Wei
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Cheng Luo
- The Center for Chemical Biology, Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shijie Chen
- The Center for Chemical Biology, Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Chen
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
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18
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Wang JZ, Shimadate Y, Kise M, Kato A, Jia YM, Li YX, Fleet G, Yu CY. Trans, trans-2-C-aryl-3,4-dihydroxypyrrolidines as potent and selective β-glucosidase inhibitors: Pharmacological chaperones for gaucher disease. Eur J Med Chem 2022; 238:114499. [DOI: 10.1016/j.ejmech.2022.114499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/26/2022] [Accepted: 05/26/2022] [Indexed: 11/29/2022]
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19
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Shit P, Sahaji S, Misra AK. Synthesis of selenoglycosides and selenium linked disaccharides using reductive cleavage of diselenides. Carbohydr Res 2022; 516:108554. [DOI: 10.1016/j.carres.2022.108554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 11/02/2022]
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20
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Alonso‐Gil S, Parkan K, Kaminský J, Pohl R, Miyazaki T. Unlocking the Hydrolytic Mechanism of GH92 α‐1,2‐Mannosidases: Computation Inspires the use of C‐Glycosides as Michaelis Complex Mimics. Chemistry 2022; 28:e202200148. [PMID: 35049087 PMCID: PMC9305736 DOI: 10.1002/chem.202200148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Indexed: 11/28/2022]
Abstract
The conformational changes in a sugar moiety along the hydrolytic pathway are key to understand the mechanism of glycoside hydrolases (GHs) and to design new inhibitors. The two predominant itineraries for mannosidases go via OS2→B2,5→1S5 and 3S1→3H4→1C4. For the CAZy family 92, the conformational itinerary was unknown. Published complexes of Bacteroides thetaiotaomicron GH92 catalyst with a S‐glycoside and mannoimidazole indicate a 4C1→4H5/1S5→1S5 mechanism. However, as observed with the GH125 family, S‐glycosides may not act always as good mimics of GH's natural substrate. Here we present a cooperative study between computations and experiments where our results predict the E5→B2,5/1S5→1S5 pathway for GH92 enzymes. Furthermore, we demonstrate the Michaelis complex mimicry of a new kind of C‐disaccharides, whose biochemical applicability was still a chimera.
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Affiliation(s)
- Santiago Alonso‐Gil
- Department of Structural and Computational Biology Max F. Perutz Laboratories University of Vienna Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Kamil Parkan
- Department of Chemistry of Natural Compounds University of Chemistry and Technology Technická 5 166 28 Prague Czech Republic
| | - Jakub Kaminský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Gilead Sciences & IOCB Research Centre Czech Academy of Sciences Flemingovo nám. 2 166 10 Prague Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Gilead Sciences & IOCB Research Centre Czech Academy of Sciences Flemingovo nám. 2 166 10 Prague Czech Republic
| | - Takatsugu Miyazaki
- Research Institute of Green Science and Technology Shizuoka University 836 Ohya, Suruga-ku Shizuoka 422-8529 Japan
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21
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Holzwarth M, Ludwig J, Bernz A, Claasen B, Majoul A, Reuter J, Zens A, Pawletta B, Bilitewski U, Weiss IM, Laschat S. Modulating chitin synthesis in marine algae with iminosugars obtained by SmI 2 and FeCl 3-mediated diastereoselective carbonyl ene reaction. Org Biomol Chem 2022; 20:6606-6618. [DOI: 10.1039/d2ob00907b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strategies for synthesizing polyhydroxylated piperidines such as iminosugars have received broad attention. These substances are known to interact with carbohydrate related enzymes glycosidases and glycosyltransferases, to which also the large...
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22
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Richards SJ, Gibson MI. Toward Glycomaterials with Selectivity as Well as Affinity. JACS AU 2021; 1:2089-2099. [PMID: 34984416 PMCID: PMC8717392 DOI: 10.1021/jacsau.1c00352] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 05/08/2023]
Abstract
Multivalent glycosylated materials (polymers, surfaces, and particles) often show high affinity toward carbohydrate binding proteins (e.g., lectins) due to the nonlinear enhancement from the cluster glycoside effect. This affinity gain has potential in applications from diagnostics, biosensors, and targeted delivery to anti-infectives and in an understanding of basic glycobiology. This perspective highlights the question of selectivity, which is less often addressed due to the reductionist nature of glycomaterials and the promiscuity of many lectins. The use of macromolecular features, including architecture, heterogeneous ligand display, and the installation of non-natural glycans, to address this challenge is discussed, and examples of selectivity gains are given.
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Affiliation(s)
| | - Matthew I. Gibson
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
- Warwick
Medical School, University of Warwick, Coventry CV4 7AL, U.K.
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23
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Blériot Y, Auberger N, Désiré J. Sugar-Derived Amidines and Congeners: Structures, Glycosidase Inhibition and Applications. Curr Med Chem 2021; 29:1271-1292. [PMID: 34951354 DOI: 10.2174/0929867329666211222164545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/16/2021] [Accepted: 10/22/2021] [Indexed: 11/22/2022]
Abstract
Glycosidases, the enzymes responsible for the breakdown of glycoconjugates including di-, oligo- and polysaccharides are ubiquitous through all kingdoms of life. The extreme chemical stability of the glycosidic bond combined with the catalytic rates achieved by glycosidases makes them among the most proficient of all enzymes.
Given their multitude of roles in vivo, inhibition of these enzymes is highly attractive with potential in the treatment of a vast array of pathologies ranging from lysosomal storage and diabetes to viral infections. Therefore great efforts have been invested in the last three decades to design and synthesize inhibitors of glycosidases leading to a number of drugs currently on the market. Amongst the vast array of structures that have been disclosed, sugars incorporating an amidine moiety have been the focus of many research groups around the world because of their glycosidase transition state-like structure. In this review we report and discuss the structure, the inhibition profile and the use of these molecules including related structural congeners as transition state analogs.
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Affiliation(s)
- Yves Blériot
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9. France
| | - Nicolas Auberger
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9. France
| | - Jérôme Désiré
- Université de Poitiers, IC2MP, UMR CNRS 7285, Equipe "OrgaSynth", Groupe Glycochimie 4 rue Michel Brunet, 86073 Poitiers cedex 9. France
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de Armas-Ricard M, Quinán-Cárdenas F, Sanhueza H, Pérez-Vidal R, Mayorga-Lobos C, Ramírez-Rodríguez O. Phytochemical Screening and Antioxidant Activity of Seven Native Species Growing in the Forests of Southern Chilean Patagonia. Molecules 2021; 26:6722. [PMID: 34771130 PMCID: PMC8587661 DOI: 10.3390/molecules26216722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 11/17/2022] Open
Abstract
The genus Nothofagus is one of the most abundant in the subantarctic Patagonian forests. Five species inhabit these ecosystems, three evergreen (Nothofagus betuloides, Nothofagus dombeyi, and Nothofagus nitida) and two deciduous (Nothofagus pumilio and Nothofagus antarctica). This is the first report on the levels of secondary metabolites and the antioxidant capacity of Patagonian tree species growing in natural environments. The aim of this work was to carry out a phytochemical screening, to determine the antioxidant capacity, the sun protection factor, and the α-glucosidase and tyrosinase inhibitory activity of foliar extracts of the five previous species. Besides, Aristotelia chilensis and Berberis microphylla, two species of Patagonian shrubs growing in the same forests, were used as reference. N. dombeyi was the Nothofagus with the best antioxidant capacity. B. microphylla differed from all studied species. Moreover, the Nothofagus was split into two groups. N. betuloides and N. dombeyi are the most similar species to A. chilensis. The α-glucosidase was completely inhibited by all studied extracts. Furthermore, N. antarctica, N.pumilio, and N. nitida inhibited about 70% of the tyrosinase activity. All the results found in this study for the species of the genus Nothofagus support further research on their potential beneficial properties for human health.
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Affiliation(s)
- Merly de Armas-Ricard
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
- Campus Patagonia, Universidad Austral de Chile, Camino a Coyhaique Alto Km. 4, Coyhaique 5950000, Chile
| | - Francisco Quinán-Cárdenas
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
- Faculty of Sciences, University of Chile, Las Palmeras 3425, Santiago 7800003, Chile
| | - Harold Sanhueza
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
| | - Rodrigo Pérez-Vidal
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
| | - Cristina Mayorga-Lobos
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
- Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, Santiago 8380494, Chile
| | - Oney Ramírez-Rodríguez
- Laboratory of Chemistry and Biochemistry, Campus Lillo, University of Aysén. Eusebio Lillo 667, Coyhaique 5951537, Chile; (F.Q.-C.); (H.S.); (R.P.-V.); (C.M.-L.)
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25
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Glycoengineering of Therapeutic Antibodies with Small Molecule Inhibitors. Antibodies (Basel) 2021; 10:antib10040044. [PMID: 34842612 PMCID: PMC8628514 DOI: 10.3390/antib10040044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 01/22/2023] Open
Abstract
Monoclonal antibodies (mAbs) are one of the cornerstones of modern medicine, across an increasing range of therapeutic areas. All therapeutic mAbs are glycoproteins, i.e., their polypeptide chain is decorated with glycans, oligosaccharides of extraordinary structural diversity. The presence, absence, and composition of these glycans can have a profound effect on the pharmacodynamic and pharmacokinetic profile of individual mAbs. Approaches for the glycoengineering of therapeutic mAbs—the manipulation and optimisation of mAb glycan structures—are therefore of great interest from a technological, therapeutic, and regulatory perspective. In this review, we provide a brief introduction to the effects of glycosylation on the biological and pharmacological functions of the five classes of immunoglobulins (IgG, IgE, IgA, IgM and IgD) that form the backbone of all current clinical and experimental mAbs, including an overview of common mAb expression systems. We review selected examples for the use of small molecule inhibitors of glycan biosynthesis for mAb glycoengineering, we discuss the potential advantages and challenges of this approach, and we outline potential future applications. The main aim of the review is to showcase the expanding chemical toolbox that is becoming available for mAb glycoengineering to the biology and biotechnology community.
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Inhibition of Clostridium difficile TcdA and TcdB toxins with transition state analogues. Nat Commun 2021; 12:6285. [PMID: 34725358 PMCID: PMC8560925 DOI: 10.1038/s41467-021-26580-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 10/11/2021] [Indexed: 12/20/2022] Open
Abstract
Clostridium difficile causes life-threatening diarrhea and is the leading cause of healthcare-associated bacterial infections in the United States. TcdA and TcdB bacterial toxins are primary determinants of disease pathogenesis and are attractive therapeutic targets. TcdA and TcdB contain domains that use UDP-glucose to glucosylate and inactivate host Rho GTPases, resulting in cytoskeletal changes causing cell rounding and loss of intestinal integrity. Transition state analysis revealed glucocationic character for the TcdA and TcdB transition states. We identified transition state analogue inhibitors and characterized them by kinetic, thermodynamic and structural analysis. Iminosugars, isofagomine and noeuromycin mimic the transition state and inhibit both TcdA and TcdB by forming ternary complexes with Tcd and UDP, a product of the TcdA- and TcdB-catalyzed reactions. Both iminosugars prevent TcdA- and TcdB-induced cytotoxicity in cultured mammalian cells by preventing glucosylation of Rho GTPases. Iminosugar transition state analogues of the Tcd toxins show potential as therapeutics for C. difficile pathology. The Clostridium difficile virulence factors TcdA and TcdB contain a glucosyltransferase domain (GTD), which has both glucohydrolase (GH) and glucosyltransferase (GT) activities. Here, the authors characterize the transition state features of the TcdA and TcdB GH reactions by measuring kinetic isotope effects and they identify two transition state analogues, isofagomine and noeuromycin that inhibit TcdA and TcdB. They also present the crystal structures of TcdB-GTD bound to these inhibitors and the reaction product UDP.
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27
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Jain N, Tamura K, Déjean G, Van Petegem F, Brumer H. Orthogonal Active-Site Labels for Mixed-Linkage endo-β-Glucanases. ACS Chem Biol 2021; 16:1968-1984. [PMID: 33988963 DOI: 10.1021/acschembio.1c00063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Small molecule irreversible inhibitors are valuable tools for determining catalytically important active-site residues and revealing key details of the specificity, structure, and function of glycoside hydrolases (GHs). β-glucans that contain backbone β(1,3) linkages are widespread in nature, e.g., mixed-linkage β(1,3)/β(1,4)-glucans in the cell walls of higher plants and β(1,3)glucans in yeasts and algae. Commensurate with this ubiquity, a large diversity of mixed-linkage endoglucanases (MLGases, EC 3.2.1.73) and endo-β(1,3)-glucanases (laminarinases, EC 3.2.1.39 and EC 3.2.1.6) have evolved to specifically hydrolyze these polysaccharides, respectively, in environmental niches including the human gut. To facilitate biochemical and structural analysis of these GHs, with a focus on MLGases, we present here the facile chemo-enzymatic synthesis of a library of active-site-directed enzyme inhibitors based on mixed-linkage oligosaccharide scaffolds and N-bromoacetylglycosylamine or 2-fluoro-2-deoxyglycoside warheads. The effectiveness and irreversibility of these inhibitors were tested with exemplar MLGases and an endo-β(1,3)-glucanase. Notably, determination of inhibitor-bound crystal structures of a human-gut microbial MLGase from Glycoside Hydrolase Family 16 revealed the orthogonal labeling of the nucleophile and catalytic acid/base residues with homologous 2-fluoro-2-deoxyglycoside and N-bromoacetylglycosylamine inhibitors, respectively. We anticipate that the selectivity of these inhibitors will continue to enable the structural and mechanistic analyses of β-glucanases from diverse sources and protein families.
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Affiliation(s)
- Namrata Jain
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Kazune Tamura
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Guillaume Déjean
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Filip Van Petegem
- Department of Biochemistry and Molecular Biology, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Harry Brumer
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
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28
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Quirke JCK, Crich D. GH47 and Other Glycoside Hydrolases Catalyze Glycosidic Bond Cleavage with the Assistance of Substrate Super-arming at the Transition State. ACS Catal 2021; 11:10308-10315. [PMID: 34777906 PMCID: PMC8579916 DOI: 10.1021/acscatal.1c02750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Super-armed glycosyl donors, whose substituents are predominantly held in pseudoaxial positions, exhibit strongly increased reactivity in glycosylation through significant stabilization of oxocarbenium-like transition states. Examination of X-ray crystal structures reveals that the GH47 family of glycoside hydrolases have evolved so as to distort their substrates away from the ground state conformation in such a manner as to present multiple C-O bonds in pseudoaxial positions and so benefit from conformational super-arming of their substrates, thereby enhancing catalysis. Through analysis of literature mutagenic studies, we show that a suitably placed aromatic residue in GHs 6 and 47 sterically enforces super-armed conformations on their substrates. GH families 45, 81, and 134 on the other hand impose conformational super-arming on their substrates, by maintaining the more active ring conformation through hydrogen bonding rather than steric interactions. The recognition of substrate super-arming by select GH families provides a further parallel with synthetic carbohydrate chemistry and nature and opens further avenues for the design of improved glycosidase inhibitors.
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Affiliation(s)
- Jonathan C K Quirke
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
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29
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Barik R, Halder J, Jana P, Nanda S. Stereoselective synthesis of novel carbocyclic and heterocyclic scaffolds of medicinal importance from biocatalytically derived enantiopure α-substituted-β-hydroxy esters. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Stereoselective synthesis of a 4-⍺-glucoside of valienamine and its X-ray structure in complex with Streptomyces coelicolor GlgE1-V279S. Sci Rep 2021; 11:13413. [PMID: 34183716 PMCID: PMC8238978 DOI: 10.1038/s41598-021-92554-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/04/2021] [Indexed: 02/06/2023] Open
Abstract
Glycoside hydrolases (GH) are a large family of hydrolytic enzymes found in all domains of life. As such, they control a plethora of normal and pathogenic biological functions. Thus, understanding selective inhibition of GH enzymes at the atomic level can lead to the identification of new classes of therapeutics. In these studies, we identified a 4-⍺-glucoside of valienamine (8) as an inhibitor of Streptomyces coelicolor (Sco) GlgE1-V279S which belongs to the GH13 Carbohydrate Active EnZyme family. The results obtained from the dose-response experiments show that 8 at a concentration of 1000 µM reduced the enzyme activity of Sco GlgE1-V279S by 65%. The synthetic route to 8 and a closely related 4-⍺-glucoside of validamine (7) was achieved starting from readily available D-maltose. A key step in the synthesis was a chelation-controlled addition of vinylmagnesium bromide to a maltose-derived enone intermediate. X-ray structures of both 7 and 8 in complex with Sco GlgE1-V279S were solved to resolutions of 1.75 and 1.83 Å, respectively. Structural analysis revealed the valienamine derivative 8 binds the enzyme in an E2 conformation for the cyclohexene fragment. Also, the cyclohexene fragment shows a new hydrogen-bonding contact from the pseudo-diaxial C(3)-OH to the catalytic nucleophile Asp 394 at the enzyme active site. Asp 394, in fact, forms a bidentate interaction with both the C(3)-OH and C(7)-OH of the inhibitor. In contrast, compound 7 disrupts the catalytic sidechain interaction network of Sco GlgE1-V279S via steric interactions resulting in a conformation change in Asp 394. These findings will have implications for the design other aminocarbasugar-based GH13-inhibitors and will be useful for identifying more potent and selective inhibitors.
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31
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Ahuja-Casarín AI, Merino-Montiel P, Vega-Baez JL, Montiel-Smith S, Fernandes MX, Lagunes I, Maya I, Padrón JM, López Ó, Fernández-Bolaños JG. Tuning the activity of iminosugars: novel N-alkylated deoxynojirimycin derivatives as strong BuChE inhibitors. J Enzyme Inhib Med Chem 2021; 36:138-146. [PMID: 33228403 PMCID: PMC7717699 DOI: 10.1080/14756366.2020.1847101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We have designed unprecedented cholinesterase inhibitors based on 1-deoxynojirimycin as potential anti-Alzheimer’s agents. Compounds are comprised of three key structural motifs: the iminosugar, for interaction with cholinesterase catalytic anionic site (CAS); a hydrocarbon tether with variable lengths, and a fragment derived from 2-phenylethanol for promoting interactions with peripheral anionic site (PAS). Title compounds exhibited good selectivity towards BuChE, strongly depending on the substitution pattern and the length of the tether. The lead compounds were found to be strong mixed inhibitors of BuChE (IC50 = 1.8 and 1.9 µM). The presumptive binding mode of the lead compound was analysed using molecular docking simulations, revealing H-bond interactions with the catalytic subsite (His438) and CAS (Trp82 and Glu197) and van der Waals interactions with PAS (Thr284, Pro285, Asn289). They also lacked significant antiproliferative activity against tumour and non-tumour cells at 100 µM, making them promising new agents for tackling Alzheimer’s disease through the cholinergic approach.
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Affiliation(s)
- Ana I Ahuja-Casarín
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Penélope Merino-Montiel
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - José Luis Vega-Baez
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Sara Montiel-Smith
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Miguel X Fernandes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Irene Lagunes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Inés Maya
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
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32
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Iftikhar M, Lu Y, Zhou M. An overview of therapeutic potential of N-alkylated 1-deoxynojirimycin congeners. Carbohydr Res 2021; 504:108317. [PMID: 33932806 DOI: 10.1016/j.carres.2021.108317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 01/13/2023]
Abstract
Polyhydroxylated alkaloids display a wide range of biological activities, suggesting their use in the treatment of various diseases. Their most famous representative, 1-deoxynojirimycin (DNJ), is a natural product that shows α- and β-glucosidase inhibition. This molecule has been since converted into two clinically approved drugs i.e., Zavesca® and Glyset®, targeting type I Gaucher's disease and type II diabetes mellitus, respectively. This review examines the therapeutic potential of important DNJ congeners reported in last decade and presents concise mechanism of glycosidase inhibition. A brief overview of substituents conjugation's impact on DNJ scaffold (including N-alkylated DNJ derivatives, mono-valent, di-valent and multivalent DNJ congeners, N-[5-(adamantan-1-yl-methoxy)-pentyl]-1-deoxynojirimycin (AMP-DNM) look alike DNJ based lipophilic derivatives, AMP-DNM based neoglycoconjugates, DNJ click derivatives with varying carboxylic acids and aromatic moieties, conjugates of DNJ and glucose, and N-bridged DNJ analogues) towards various enzymes such as α/β glucosidase, porcine trehalase, as F508del-CFTR correctors, α-mannosidase, human placental β-glucocerebrosidase, N370S β-GCase, α-amylase and insect trehalase as potent and selective inhibitors have been discussed with potential bioactivities, which can provide inspiration for future studies.
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Affiliation(s)
- Mehwish Iftikhar
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, 210094, PR China
| | - Yinghong Lu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, 210094, PR China
| | - Min Zhou
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing, Jiangsu, 210094, PR China.
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33
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Quirke JCK, Crich D. Side Chain Conformation Restriction in the Catalysis of Glycosidic Bond Formation by Leloir Glycosyltransferases, Glycoside Phosphorylases, and Transglycosidases. ACS Catal 2021; 11:5069-5078. [PMID: 34367723 PMCID: PMC8336929 DOI: 10.1021/acscatal.1c00896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Carbohydrate side chain conformation is an important factor in the control of reactivity at the anomeric center, ie, in the making and breaking of glycosidic bonds, whether chemically or, for hydrolysis, by glycoside hydrolases. In nature glycosidic bond formation is catalyzed out by glycosyltransferases (GTs), glycoside phosphoryases, and transglycosidases. By analysis of 118 crystal structures of sugar nucleotide dependent (Leloir) GTs, 136 crystal structures of glycoside phosphorylases, and 54 crystal structures of transglycosidases bound to hexopyranosides or their analogs at the donor site (-1 site), we determined that most enzymes that catalyze glycoside synthesis, be they GTs, glycoside phosphorylases or transglycosidases, restrict their substrate side chains to the most reactive gauche,gauche (gg) conformation to achieve maximum stabilization of the oxocarbenium ion-like transition state for glycosyl transfer. The galactose series deviates from this trend, with α-galactosyltransferases preferentially restricting their substrates to the second-most reactive gauche,trans (gt) conformation, and β-galactosyltransferases favoring the least reactive trans,gauche (tg) conformation. This insight will help progress the design and development of improved, conformationally-restricted GT inhibitors that take advantage of these inherent side chain preferences.
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Affiliation(s)
- Jonathan C. K. Quirke
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA 30602, USA
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
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Tiwari VK, Powell DR, Broussy S, Berkowitz DB. Rapid Enantioselective and Diastereoconvergent Hybrid Organic/Biocatalytic Entry into the Oseltamivir Core. J Org Chem 2021; 86:6494-6503. [PMID: 33857378 DOI: 10.1021/acs.joc.1c00326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A formal synthesis of the antiviral drug (-)-oseltamivir (Tamiflu) has been accomplished starting from m-anisic acid via a dissolving metal or electrochemical Birch reduction. The correct absolute stereochemistry is efficiently set through enzyme-catalyzed carbonyl reduction on the resultant racemic α,β-unsaturated ketone. A screen of a broad ketoreductase (KRED) library identified several that deliver the desired allylic alcohol with nearly perfect facial selectivity at the new center for each antipodal substrate, indicating that the enzyme also is able to completely override inherent diastereomeric bias in the substrate. Conversion is complete, with d-glucose serving as the terminal hydride donor (glucose dehydrogenase). For each resulting diastereomeric secondary alcohol, O/N-interconversion is then efficiently effected either by synfacial [3,3]-sigmatropic allylic imidate rearrangement or by direct, stereoinverting N-Mitsunobu chemistry. Both stereochemical outcomes have been confirmed crystallographically. The α,β-unsaturation is then introduced via an α-phenylselenylation/oxidation/pyrolysis sequence to yield the targeted (S)-N-acyl-protected 5-amino-1,3-cyclohexadiene carboxylates, key advanced intermediates for oseltamivir pioneered by Corey (N-Boc) and Trost (N-phthalamido), respectively.
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Affiliation(s)
- Virendra K Tiwari
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Douglas R Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Sylvain Broussy
- University of Paris, CiTCoM, 8038 CNRS, U 1268 INSERM, F-75006 Paris, France
| | - David B Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
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De Fenza M, Esposito A, D’Alonzo D, Guaragna A. Synthesis of Piperidine Nucleosides as Conformationally Restricted Immucillin Mimics. Molecules 2021; 26:1652. [PMID: 33809603 PMCID: PMC8001838 DOI: 10.3390/molecules26061652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/11/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
The de novo synthesis of piperidine nucleosides from our homologating agent 5,6-dihydro-1,4-dithiin is herein reported. The structure and conformation of nucleosides were conceived to faithfully resemble the well-known nucleoside drugs Immucillins H and A in their bioactive conformation. NMR analysis of the synthesized compounds confirmed that they adopt an iminosugar conformation bearing the nucleobases and the hydroxyl groups in the appropriate orientation.
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Affiliation(s)
- Maria De Fenza
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy; (M.D.F.); (A.E.); (D.D.)
| | - Anna Esposito
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy; (M.D.F.); (A.E.); (D.D.)
| | - Daniele D’Alonzo
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy; (M.D.F.); (A.E.); (D.D.)
| | - Annalisa Guaragna
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy
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36
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Kaur R, Kumar R, Dogra N, Kumar A, Yadav AK, Kumar M. Synthesis and studies of thiazolidinedione-isatin hybrids as α-glucosidase inhibitors for management of diabetes. Future Med Chem 2021; 13:457-485. [PMID: 33506699 DOI: 10.4155/fmc-2020-0022] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Aim: Keeping in view the side effects associated with clinically used α-glucosidase inhibitors, novel thiazolidinedione-isatin hybrids were synthesized and evaluated by in vitro, in vivo and in silico procedures. Materials & methods: Biological evaluation, cytotoxicity assessment, molecular docking, binding free energy calculations and molecular dynamics studies were performed for hybrids. Results: The most potent inhibitor A-10 (IC50 = 24.73 ± 0.93 μM) was competitive in manner and observed as non-cytotoxic. A-10 possessed higher efficacy than the standard drug (acarbose) during in vivo biological testing. Conclusion: The enzyme inhibitory potential and safety profile of synthetic molecules was recognized after in vitro, in vivo, in silico and cytotoxicity studies. Further structural optimization of A-10 can offer potential hit molecules suitable for future investigations.
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Affiliation(s)
- Ramandeep Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Rajnish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, Varanasi 221005, India
| | - Nilambra Dogra
- Centre for Systems Biology & Bioinformatics, Panjab University, Chandigarh 160014, India
| | - Ashok Kumar
- Centre for Systems Biology & Bioinformatics, Panjab University, Chandigarh 160014, India
| | - Ashok Kumar Yadav
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Manoj Kumar
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
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37
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Lumbroso A, Berthonneau C, Beaudet I, Quintard JP, Planchat A, García-Moreno MI, Ortiz Mellet C, Le Grognec E. A versatile stereocontrolled synthesis of 2-deoxyiminosugar C-glycosides and their evaluation as glycosidase inhibitors. Org Biomol Chem 2021; 19:1083-1099. [PMID: 33427829 DOI: 10.1039/d0ob02249g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A highly enantioselective synthesis of (R,S) or (S,S)-2,6-disubstituted dehydropiperidines has been previously achieved through Sn/Li transmetalation of the corresponding stannylated dehydropiperidines or of their precursors. Herein, we successively consider their Upjohn's syn dihydroxylation and their anti-dihydroxylation via an epoxidation reaction followed by epoxide opening reaction. The stereochemical course of these reactions was first reported including the use of appropriate protecting groups before considering the conversion of the obtained compounds into NH or NMe iminosugar hydrochlorides. A primary evaluation of the designed iminosugar C-glycosides as glycosidase inhibitors suggests candidates for the selective inhibition of α-galactosidase, amyloglycosidase and naringinase. Beyond the reported results, the method constitutes a highly modulable route for the synthesis of well stereodefined iminosugar C-glycosides, an advantage which might be used for the design of iminosugars to enhance their biological properties.
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38
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Baiya S, Pengthaisong S, Kitjaruwankul S, Ketudat Cairns JR. Structural analysis of rice Os4BGlu18 monolignol β-glucosidase. PLoS One 2021; 16:e0241325. [PMID: 33471829 PMCID: PMC7817009 DOI: 10.1371/journal.pone.0241325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/28/2020] [Indexed: 01/07/2023] Open
Abstract
Monolignol glucosides are storage forms of monolignols, which are polymerized to lignin to strengthen plant cell walls. The conversion of monolignol glucosides to monolignols is catalyzed by monolignol β-glucosidases. Rice Os4BGlu18 β-glucosidase catalyzes hydrolysis of the monolignol glucosides, coniferin, syringin, and p-coumaryl alcohol glucoside more efficiently than other natural substrates. To understand more clearly the basis for substrate specificity of a monolignol β-glucosidase, the structure of Os4BGlu18 was determined by X-ray crystallography. Crystals of Os4BGlu18 and its complex with δ-gluconolactone diffracted to 1.7 and 2.1 Å resolution, respectively. Two protein molecules were found in the asymmetric unit of the P212121 space group of their isomorphous crystals. The Os4BGlu18 structure exhibited the typical (β/α)8 TIM barrel of glycoside hydrolase family 1 (GH1), but the four variable loops and two disulfide bonds appeared significantly different from other known structures of GH1 β-glucosidases. Molecular docking studies of the Os4BGlu18 structure with monolignol substrate ligands placed the glycone in a similar position to the δ-gluconolactone in the complex structure and revealed the interactions between protein and ligands. Molecular docking, multiple sequence alignment, and homology modeling identified amino acid residues at the aglycone-binding site involved in substrate specificity for monolignol β-glucosides. Thus, the structural basis of substrate recognition and hydrolysis by monolignol β-glucosidases was elucidated.
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Affiliation(s)
- Supaporn Baiya
- Faculty of Science at Sriracha, Kasetsart University, Sriracha Campus, Sriracha, Chonburi, Thailand
| | - Salila Pengthaisong
- School of Chemistry, Institute of Science and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Muang, Nakhon Ratchasima, Thailand
| | - Sunan Kitjaruwankul
- Faculty of Science at Sriracha, Kasetsart University, Sriracha Campus, Sriracha, Chonburi, Thailand
| | - James R. Ketudat Cairns
- School of Chemistry, Institute of Science and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Muang, Nakhon Ratchasima, Thailand
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39
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Klunda T, Hricovíni M, Šesták S, Kóňa J, Poláková M. Selective Golgi α-mannosidase II inhibitors: N-alkyl substituted pyrrolidines with a basic functional group. NEW J CHEM 2021. [DOI: 10.1039/d1nj01176f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enzymatic assays, molecular modeling and NMR studies of novel 1,4-dideoxy-1,4-imino-l-lyxitols provided new information on the GH38 family enzyme inhibitors and their selectivity.
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Affiliation(s)
- Tomáš Klunda
- Institute of Chemistry
- Center for Glycomics
- Slovak Academy of Sciences
- SK-845 38 Bratislava
- Slovakia
| | - Michal Hricovíni
- Institute of Chemistry
- Center for Glycomics
- Slovak Academy of Sciences
- SK-845 38 Bratislava
- Slovakia
| | - Sergej Šesták
- Institute of Chemistry
- Center for Glycomics
- Slovak Academy of Sciences
- SK-845 38 Bratislava
- Slovakia
| | - Juraj Kóňa
- Institute of Chemistry
- Center for Glycomics
- Slovak Academy of Sciences
- SK-845 38 Bratislava
- Slovakia
| | - Monika Poláková
- Institute of Chemistry
- Center for Glycomics
- Slovak Academy of Sciences
- SK-845 38 Bratislava
- Slovakia
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40
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Della Sala P, Vanni C, Talotta C, Di Marino L, Matassini C, Goti A, Neri P, Šesták S, Cardona F, Gaeta C. Multivalent resorcinarene clusters decorated with DAB-1 inhitopes: targeting Golgi α-mannosidase from Drosophila melanogaster. Org Chem Front 2021. [DOI: 10.1039/d1qo01048d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Resorcinarene@DAB-1 clusters show a remarkable multivalent effect towards GMIIb over other α-mannosidases, due to a rebinding mechanism: two DAB-1 units of the cluster bind the two Zn-sites of the dimeric protein in an alternate way.
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Affiliation(s)
- Paolo Della Sala
- Laboratory of Supramolecular Chemistry (SupraLab@UniSa), Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84984, Fisciano, Italy
| | - Costanza Vanni
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Carmen Talotta
- Laboratory of Supramolecular Chemistry (SupraLab@UniSa), Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84984, Fisciano, Italy
| | - Luca Di Marino
- Laboratory of Supramolecular Chemistry (SupraLab@UniSa), Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84984, Fisciano, Italy
| | - Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
- Associated with LENS, via N. Carrara 1, 50019 Sesto Fiorentino, FI, Italy
| | - Andrea Goti
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
- Associated with LENS, via N. Carrara 1, 50019 Sesto Fiorentino, FI, Italy
| | - Placido Neri
- Laboratory of Supramolecular Chemistry (SupraLab@UniSa), Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84984, Fisciano, Italy
| | - Sergej Šesták
- Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dubravska cesta 9, 84538, Bratislava, Slovakia
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo Schiff”, Università degli Studi di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
- Associated with LENS, via N. Carrara 1, 50019 Sesto Fiorentino, FI, Italy
| | - Carmine Gaeta
- Laboratory of Supramolecular Chemistry (SupraLab@UniSa), Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II 132, I-84984, Fisciano, Italy
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41
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Ali M, Barakat A, El-Faham A, Al-Rasheed HH, Dahlous K, Al-Majid AM, Sharma A, Yousuf S, Sanam M, Ul-Haq Z, Choudhary MI, de la Torre BG, Albericio F. Synthesis and characterisation of thiobarbituric acid enamine derivatives, and evaluation of their α-glucosidase inhibitory and anti-glycation activity. J Enzyme Inhib Med Chem 2020; 35:692-701. [PMID: 32156165 PMCID: PMC7155210 DOI: 10.1080/14756366.2020.1737045] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 12/16/2022] Open
Abstract
A new series of thiobarbituric (thiopyrimidine trione) enamine derivatives and its analogues barbituric acid derivatives was synthesised, characterised, and screen for in vitro evaluation of α-glucosidase enzyme inhibition and anti-glycation activity. This series of compounds were found to inhibit α-glucosidase activity in a reversible mixed-type manner with IC50 between 264.07 ± 1.87 and 448.63 ± 2.46 µM. Molecular docking studies indicated that compounds of 3g, 3i, 3j, and 5 are located close to the active site of α-glucosidase, which may cover the active pocket, thereby inhibiting the binding of the substrate to the enzyme. Thiopyrimidine trione derivatives also inhibited the generation of advanced glycation end-products (AGEs), which cause long-term complications in diabetes. While, compounds 3a-k, 5, and 6 showed significant to moderate anti-glycation activity (IC50 = 31.5 ± 0.81 to 554.76 ± 9.1 µM).
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Affiliation(s)
- M. Ali
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, Egypt
| | - Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, Egypt
| | - Hessa H. Al-Rasheed
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Kholoud Dahlous
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Anamika Sharma
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Sammer Yousuf
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Mehar Sanam
- Dr. Panjwani Center for Molecular medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - M. Iqbal Choudhary
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- Dr. Panjwani Center for Molecular medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Beatriz G. de la Torre
- KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Fernando Albericio
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, and Department of Organic Chemistry, University of Barcelona, Barcelona, Spain
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42
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Domingues M, Jaszczyk J, Ismael MI, Figueiredo JA, Daniellou R, Lafite P, Schuler M, Tatibouët A. Conformationally Restricted Oxazolidin‐2‐one Fused Bicyclic Iminosugars as Potential Glycosidase Inhibitors. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maria Domingues
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
- Departamento de Química Unidade I&D FibEnTech da Universidade da Beira Interior Av. Marquês d'Ávila e Bolama 6201‐001 Covilhã Portugal
| | - Justyna Jaszczyk
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
| | - Maria Isabel Ismael
- Departamento de Química Unidade I&D FibEnTech da Universidade da Beira Interior Av. Marquês d'Ávila e Bolama 6201‐001 Covilhã Portugal
| | - José Albertino Figueiredo
- Departamento de Química Unidade I&D FibEnTech da Universidade da Beira Interior Av. Marquês d'Ávila e Bolama 6201‐001 Covilhã Portugal
| | - Richard Daniellou
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
| | - Pierre Lafite
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
| | - Marie Schuler
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
| | - Arnaud Tatibouët
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans CNRS‐UMR 7311, BP 6759 45067 Orléans cedex 02 France
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43
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Quirke JCK, Crich D. Glycoside Hydrolases Restrict the Side Chain Conformation of Their Substrates To Gain Additional Transition State Stabilization. J Am Chem Soc 2020; 142:16965-16973. [PMID: 32877175 PMCID: PMC7544649 DOI: 10.1021/jacs.0c05592] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Carbohydrate side chain conformation confers a significant influence on reactivity during glycosylation and anomeric bond hydrolysis due to stabilization of the oxocarbenium-like transition state. By analysis of 513 pyranoside-bound glycoside hydrolase (GH) crystal structures, we determine that most glucosidases and β-mannosidases preferentially bind their substrates in the most reactive gauche,gauche (gg) conformation, thereby maximizing stabilization of the corresponding oxocarbenium ion-like transition state during hydrolysis. α-Galactoside hydrolases mostly show a preference for the second most activating gauche,trans (gt) conformation to avoid the energy penalty that would arise from imposing the gg conformation on galacto-configured ligands. These preferences stand in stark contrast to the side chain populations observed for these sugars both in free solution and bound to nonhydrolytic proteins, where for the most part a much greater diversity of side chain conformations is observed. Analysis of sequences of GH-ligand complexes reveals that side chain restriction begins with the enzyme-substrate complex and persists through the transition state until release of the hydrolysis product, despite changes in ring conformation along the reaction coordinate. This work will inform the design of new generations of glycosidase inhibitors with restricted side chains that confer higher selectivity and/or affinity.
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Affiliation(s)
- Jonathan C K Quirke
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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44
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Haarr M, Lopéz Ó, Pejov L, Fernández-Bolaños JG, Lindbäck E, Sydnes MO. 1,4-Dideoxy-1,4-imino-d-arabinitol (DAB) Analogues Possessing a Hydrazide Imide Moiety as Potent and Selective α-Mannosidase Inhibitors. ACS OMEGA 2020; 5:18507-18514. [PMID: 32743229 PMCID: PMC7391959 DOI: 10.1021/acsomega.0c02466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/30/2020] [Indexed: 05/08/2023]
Abstract
The synthesis of two polyhydroxylated pyrrolidines as 1,4-dideoxy-1,4-imino-d-arabinitol (DAB) analogues bearing a hydrazide moiety is described. The DAB analogues act as selective and potent inhibitors of α-mannosidase in the submicromolar concentration ranges (K i values ranging from 0.23 to 1.4 μM).
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Affiliation(s)
- Marianne
B. Haarr
- Department
of Chemistry, Bioscience and Environmental Engineering, Faculty of
Science and Technology, University of Stavanger, 4036 Stavanger, Norway
| | - Óscar Lopéz
- Departamento
de Química Orgánica, Facultad De Química, Universidad de Sevilla, c/Profesor García González 1, 41012 Seville, Spain
| | - Ljupcho Pejov
- Department
of Chemistry, Bioscience and Environmental Engineering, Faculty of
Science and Technology, University of Stavanger, 4036 Stavanger, Norway
| | - José G. Fernández-Bolaños
- Departamento
de Química Orgánica, Facultad De Química, Universidad de Sevilla, c/Profesor García González 1, 41012 Seville, Spain
| | - Emil Lindbäck
- Department
of Chemistry, Bioscience and Environmental Engineering, Faculty of
Science and Technology, University of Stavanger, 4036 Stavanger, Norway
| | - Magne O. Sydnes
- Department
of Chemistry, Bioscience and Environmental Engineering, Faculty of
Science and Technology, University of Stavanger, 4036 Stavanger, Norway
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45
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Alonso-Gil S. Mimicking the transition state of reactions of glycoside hydrolases: Updating the conformational space of the oxocarbenium cation. J Carbohydr Chem 2020. [DOI: 10.1080/07328303.2020.1766481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Santiago Alonso-Gil
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Prague 8, Czech Republic
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46
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Rowland RJ, Wu L, Liu F, Davies GJ. A baculoviral system for the production of human β-glucocerebrosidase enables atomic resolution analysis. Acta Crystallogr D Struct Biol 2020; 76:565-580. [PMID: 32496218 PMCID: PMC7271948 DOI: 10.1107/s205979832000501x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/09/2020] [Indexed: 11/18/2022] Open
Abstract
The lysosomal glycoside hydrolase β-glucocerebrosidase (GBA; sometimes called GBA1 or GCase) catalyses the hydrolysis of glycosphingolipids. Inherited deficiencies in GBA cause the lysosomal storage disorder Gaucher disease (GD). Consequently, GBA is of considerable medical interest, with continuous advances in the development of inhibitors, chaperones and activity-based probes. The development of new GBA inhibitors requires a source of active protein; however, the majority of structural and mechanistic studies of GBA today rely on clinical enzyme-replacement therapy (ERT) formulations, which are incredibly costly and are often difficult to obtain in adequate supply. Here, the production of active crystallizable GBA in insect cells using a baculovirus expression system is reported, providing a nonclinical source of recombinant GBA with comparable activity and biophysical properties to ERT preparations. Furthermore, a novel crystal form of GBA is described which diffracts to give a 0.98 Å resolution unliganded structure. A structure in complex with the inactivator 2,4-dinitrophenyl-2-deoxy-2-fluoro-β-D-glucopyranoside was also obtained, demonstrating the ability of this GBA formulation to be used in ligand-binding studies. In light of its purity, stability and activity, the GBA production protocol described here should circumvent the need for ERT formulations for structural and biochemical studies and serve to support GD research.
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Affiliation(s)
- Rhianna J. Rowland
- Department of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Liang Wu
- Department of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Feng Liu
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Gideon J. Davies
- Department of Chemistry, York Structural Biology Laboratory, University of York, Heslington, York YO10 5DD, United Kingdom
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47
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Dashnyam P, Lin HY, Chen CY, Gao S, Yeh LF, Hsieh WC, Tu Z, Lin CH. Substituent Position of Iminocyclitols Determines the Potency and Selectivity for Gut Microbial Xenobiotic-Reactivating Enzymes. J Med Chem 2020; 63:4617-4627. [PMID: 32105467 DOI: 10.1021/acs.jmedchem.9b01918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Selective inhibitors of gut bacterial β-glucuronidases (GUSs) are of particular interest in the prevention of xenobiotic-induced toxicities. This study reports the first structure-activity relationships on potency and selectivity of several iminocyclitols (2-7) for the GUSs. Complex structures of Ruminococcus gnavus GUS with 2-7 explained how charge, conformation, and substituent of iminocyclitols affect their potency and selectivity. N1 of uronic isofagomine (2) made strong electrostatic interactions with two catalytic glutamates of GUSs, resulting in the most potent inhibition (Ki ≥ 11 nM). C6-propyl analogue of 2 (6) displayed 700-fold selectivity for opportunistic bacterial GUSs (Ki = 74 nM for E. coli GUS and 51.8 μM for RgGUS). In comparison with 2, there was 200-fold enhancement in the selectivity, which was attributed to differential interactions between the propyl group and loop 5 residues of the GUSs. The results provide useful insights to develop potent and selective inhibitors for undesired GUSs.
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Affiliation(s)
- Punsaldulam Dashnyam
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan.,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.,National Chung-Hsing University, Taichung 40227, Taiwan.,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Hsien-Ya Lin
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Chia-Yu Chen
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Shijay Gao
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Lun-Fu Yeh
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Wei-Che Hsieh
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Zhijay Tu
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, No 128, Academia Road, Taipei 11529, Taiwan.,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.,National Chung-Hsing University, Taichung 40227, Taiwan.,Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan.,Department of Chemistry and Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
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48
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Synthesis and Therapeutic Applications of Iminosugars in Cystic Fibrosis. Int J Mol Sci 2020; 21:ijms21093353. [PMID: 32397443 PMCID: PMC7247015 DOI: 10.3390/ijms21093353] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
Iminosugars are sugar analogues endowed with a high pharmacological potential. The wide range of biological activities exhibited by these glycomimetics associated with their excellent drug profile make them attractive therapeutic candidates for several medical interventions. The ability of iminosugars to act as inhibitors or enhancers of carbohydrate-processing enzymes suggests their potential use as therapeutics for the treatment of cystic fibrosis (CF). Herein we review the most relevant advances in the field, paying attention to both the chemical synthesis of the iminosugars and their biological evaluations, resulting from in vitro and in vivo assays. Starting from the example of the marketed drug NBDNJ (N-butyl deoxynojirimycin), a variety of iminosugars have exhibited the capacity to rescue the trafficking of F508del-CFTR (deletion of F508 residue in the CF transmembrane conductance regulator), either alone or in combination with other correctors. Interesting results have also been obtained when iminosugars were considered as anti-inflammatory agents in CF lung disease. The data herein reported demonstrate that iminosugars hold considerable potential to be applied for both therapeutic purposes.
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Clemente F, Matassini C, Cardona F. Reductive Amination Routes in the Synthesis of Piperidine IminoSugars. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Francesca Clemente
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
- Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS); Università di Bari; 70125 Bari Italy
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Tamburrini A, Colombo C, Bernardi A. Design and synthesis of glycomimetics: Recent advances. Med Res Rev 2020; 40:495-531. [DOI: 10.1002/med.21625] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/06/2019] [Accepted: 07/09/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Alice Tamburrini
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
| | - Cinzia Colombo
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
| | - Anna Bernardi
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
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