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Targeting cancer via Golgi α-mannosidase II inhibition: How far have we come in developing effective inhibitors? Carbohydr Res 2021; 508:108395. [PMID: 34280804 DOI: 10.1016/j.carres.2021.108395] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 11/22/2022]
Abstract
Dysregulation of glycosylation pathways has been well documented in several types of cancer, where it often participates in cancer development and progression, especially cancer metastasis. Hence, inhibition of glycosidases such as mannosidases can disrupt the biosynthesis of glycans on cell surface glycoproteins and modify their role in carcinogenesis and metastasis. Several reviews have delineated the role of N-glycosylation in cancer, but the data regarding effective inhibitors remains sparse. Golgi α-mannosidase has been an attractive therapeutic target for preventing the formation of ß1,6-branched complex type N-glycans. However, due to its high structural similarity to the broadly specific lysosomal α-mannosidase, undesired co-inhibition occurs and this leads to serious side effects that complicates its potential role as a therapeutic agent. Even though extensive efforts have been geared towards the discovery of effective inhibitors, no breakthrough has been achieved thus far which could allow for their use in clinical settings. Improving the specificity of current inhibitors towards Golgi α-mannosidase is requisite in progressing this class of compounds in cancer chemotherapy. In this review, we highlight a few potent and selective inhibitors discovered up to the present to guide researchers for rational design of further effective inhibitors to overcome the issue of specificity.
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Tu HC, Hsiao YC, Yang WY, Tsai SL, Lin HK, Liao CY, Lu JW, Chou YT, Wang HD, Yuh CH. Up-regulation of golgi α-mannosidase IA and down-regulation of golgi α-mannosidase IC activates unfolded protein response during hepatocarcinogenesis. Hepatol Commun 2017; 1:230-247. [PMID: 29404456 PMCID: PMC5721452 DOI: 10.1002/hep4.1032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/27/2017] [Accepted: 03/09/2017] [Indexed: 12/27/2022] Open
Abstract
α‐1,2 mannosidases, key enzymes in N‐glycosylation, are required for the formation of mature glycoproteins in eukaryotes. Aberrant regulation of α‐1,2 mannosidases can result in cancer, although the underlying mechanisms are unclear. Here, we report the distinct roles of α‐1,2 mannosidase subtypes (MAN1A, MAN1B, ERMAN1, MAN1C) in the formation of hepatocellular carcinoma (HCC). Clinicopathological analyses revealed that the clinical stage, tumor size, α‐fetoprotein level, and invasion status were positively correlated with the expression levels of MAN1A1, MAN1B1, and MAN1A2. In contrast, the expression of MAN1C1 was decreased as early as stage I of HCC. Survival analyses showed that high MAN1A1, MAN1A2, and MAN1B1 expression levels combined with low MAN1C1 expression levels were significantly correlated with shorter overall survival rates. Functionally, the overexpression of MAN1A1 promoted proliferation, migration, and transformation as well as in vivo migration in zebrafish. Conversely, overexpression of MAN1C1 reduced the migration ability both in vitro and in vivo, decreased the colony formation ability, and shortened the S phase of the cell cycle. Furthermore, the expression of genes involved in cell cycle/proliferation and migration was increased in MAN1A1‐overexpressing cells but decreased in MAN1C1‐overexpressing cells. MAN1A1 activated the expression of key regulators of the unfolded protein response (UPR), while treatment with endoplasmic reticulum stress inhibitors blocked the expression of MAN1A1‐activated genes. Using the MAN1A1 liver‐specific overexpression zebrafish model, we observed steatosis and inflammation at earlier stages and HCC formation at a later stage accompanied by the increased expression of the UPR modulator binding immunoglobulin protein (BiP). These data suggest that the up‐regulation of MAN1A1 activates the UPR and might initiate metastasis. Conclusion: MAN1A1 represents a novel oncogene while MAN1C1 plays a role in tumor suppression in hepatocarcinogenesis. (Hepatology Communications 2017;1:230‐247)
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Affiliation(s)
- Hsiao-Chen Tu
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Institute of Biotechnology National Tsing-Hua University Hsinchu Taiwan
| | - Yung-Chun Hsiao
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Institute of Biotechnology National Tsing-Hua University Hsinchu Taiwan
| | - Wan-Yu Yang
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan
| | - Shin-Lin Tsai
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan
| | - Hua-Kuo Lin
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan
| | - Chong-Yi Liao
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Institute of Biotechnology National Tsing-Hua University Hsinchu Taiwan
| | - Jeng-Wei Lu
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Department of Life Sciences National Central University Jhongli City Taoyuan Taiwan
| | - Yu-Ting Chou
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Institute of Biotechnology National Tsing-Hua University Hsinchu Taiwan
| | - Horng-Dar Wang
- Institute of Biotechnology National Tsing-Hua University Hsinchu Taiwan
| | - Chiou-Hwa Yuh
- Institute of Molecular and Genomic Medicine National Health Research Institutes Zhunan Miaoli Taiwan.,Institute of Bioinformatics and Structural Biology National Tsing-Hua University Hsinchu Taiwan.,Department of Biological Science and Technology National Chiao Tung University Hsinchu Taiwan.,Kaohsiung Medical University Kaohsiung Taiwan
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Robina I, Steimer F, T. Carmona A, J. Moreno-Vargas A, Caffa I, Montecucco F, Nencioni A, Vogel P. Synthesis of Pyrrolidine 3,4-Diol Derivatives with Anticancer Activity on Pancreatic Tumor Cells. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Merbouh N, Brown JR, Wallner FK, Morton M, Esko JD, Seeberger PH. Rapid Chemo-Enzymatic Synthesis of Peracetylated GlcNAcβ3Galβ-Aglycones. J Carbohydr Chem 2011. [DOI: 10.1080/07328303.2011.617023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Horne G, Wilson FX. Therapeutic Applications of Iminosugars: Current Perspectives and Future Opportunities. PROGRESS IN MEDICINAL CHEMISTRY 2011; 50:135-76. [DOI: 10.1016/b978-0-12-381290-2.00004-5] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Kuntz DA, Nakayama S, Shea K, Hori H, Uto Y, Nagasawa H, Rose DR. Structural Investigation of the Binding of 5-Substituted Swainsonine Analogues to Golgi α-Mannosidase II. Chembiochem 2010; 11:673-80. [DOI: 10.1002/cbic.200900750] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Cordero F, Bonanno P, Neudeck S, Vurchio C, Brandi A. Synthesis of the New 7S-Aminolentiginosine and Derivatives. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800806] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Concise and divergent total synthesis of swainsonine, 7-alkyl swainsonines, and 2,8a-diepilentiginosine via a chiral heterocyclic enaminoester intermediate. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.03.080] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brown JR, Crawford BE, Esko JD. Glycan antagonists and inhibitors: a fount for drug discovery. Crit Rev Biochem Mol Biol 2008; 42:481-515. [PMID: 18066955 DOI: 10.1080/10409230701751611] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Glycans, the carbohydrate chains of glycoproteins, proteoglycans, and glycolipids, represent a relatively unexploited area for drug development compared with other macromolecules. This review describes the major classes of glycans synthesized by animal cells, their mode of assembly, and available inhibitors for blocking their biosynthesis and function. Many of these agents have proven useful for studying the biological activities of glycans in isolated cells, during embryological development, and in physiology. Some are being used to develop drugs for treating metabolic disorders, cancer, and infection, suggesting that glycans are excellent targets for future drug development.
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Torres-Sánchez MI, Borrachero P, Cabrera-Escribano F, Gómez-Guillén M, Angulo-Álvarez M, Álvarez E, Favre S, Vogel P. Efficient synthesis of 2,6,7,8-tetrahydroxyindolizidines (castanospermine analogues) via the dipolar cycloadditions of N-benzyl-C-(tetrofuranos-4-yl)nitrones to methyl acrylate. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Łysek R, Schütz C, Vogel P. (1S,2S,3R,6R)-6-Aminocyclohex-4-ene-1,2,3-triol (= (−)-Conduramine B-1) Is a Selective Inhibitor ofα-Mannosidases. Its Inhibitory Activity Is Enhanced byN-Benzylation. Helv Chim Acta 2005. [DOI: 10.1002/hlca.200590220] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Fujita T, Nagasawa H, Uto Y, Hashimoto T, Asakawa Y, Hori H. Synthesis of the New Mannosidase Inhibitors, Diversity-Oriented 5-Substituted Swainsonine Analogues, via Stereoselective Mannich Reaction. Org Lett 2004; 6:827-30. [PMID: 14986985 DOI: 10.1021/ol049947m] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
5alpha-substituted swainsonine analogues were synthesized by Mannich reaction of an in situ generated (-)-swainsonine iminium ion intermediate. 5alpha-substituted swainsonine analogues were epimerized to their 5beta-isomers in protic solvent. [reaction: see text]
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Affiliation(s)
- Tomoya Fujita
- Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjimacho-2, Tokushima 770-8506 Japan
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Michael JP. Simple indolizidine and quinolizidine alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2002; 55:91-258. [PMID: 11704985 DOI: 10.1016/s0099-9598(01)55004-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- J P Michael
- Centre for Molecular Design, Department of Chemistry, University of the Witwatersrand, Wits 2050, South Africa
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Watson AA, Fleet GW, Asano N, Molyneux RJ, Nash RJ. Polyhydroxylated alkaloids -- natural occurrence and therapeutic applications. PHYTOCHEMISTRY 2001; 56:265-295. [PMID: 11243453 DOI: 10.1016/s0031-9422(00)00451-9] [Citation(s) in RCA: 542] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Over one hundred polyhydroxylated alkaloids have been isolated from plants and micro-organisms. These alkaloids can be potent and highly selective glycosidase inhibitors and are arousing great interest as tools to study cellular recognition and as potential therapeutic agents. However, only three of the natural products so far have been widely studied for therapeutic potential due largely to the limited commercial availability of the other compounds.
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Affiliation(s)
- A A Watson
- Molecular Nature Limited, Aberystwyth, Cardiganshire, UK
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Datti A, Donovan RS, Korczak B, Dennis JW. A homogeneous cell-based assay to identify N-linked carbohydrate processing inhibitors. Anal Biochem 2000; 280:137-42. [PMID: 10805531 DOI: 10.1006/abio.2000.4506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Malignant transformation is accompanied by altered cell surface glycosylation. N-Linked oligosaccharides carrying beta1-6GlcNAc branches are associated with tumor invasion and metastasis. Therefore, compounds that can enter cells and block biosynthesis of beta1-6GlcNAc-branched glycans without overt cytotoxicity are potential anticancer agents. We have developed a homogeneous cell-based assay for detection of such compounds. The method enables identification of agents that block beta1-6GlcNAc-branched glycan expression after incubation for 16-20 h with MDAY-D2 tumor cells, thereby protecting the cells from the subsequent addition of leukoagglutinin, a cytotoxic plant lectin. We observed that MDAY-D2 cell number is directly proportional to the level of endogenous alkaline phosphatase activity measured spectrophotometrically in cultures after the addition of substrate. The alkaline phosphatase assay was capable of detecting as few as 1,500 cells. The assay was readily adapted for high-throughput screening as reagent costs are low and no cell harvesting and washing steps are required. Under high-throughput operating conditions, the coefficient of variation for controls was found to be 4.2%. The results suggest that measurement of alkaline phosphatase in this cell assay format may be adapted for wider applications in high-throughput screenings for compounds that relieve cells from other growth inhibitors.
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Affiliation(s)
- A Datti
- GlycoDesign Inc., Toronto, Ontario, Canada.
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Perrone GG, Barrow KD, McFarlane IJ. The selective enzymatic synthesis of lipophilic esters of swainsonine. Bioorg Med Chem 1999; 7:831-5. [PMID: 10400336 DOI: 10.1016/s0968-0896(98)00271-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potent and specific inhibitor of Golgi alpha-mannosidase II, swainsonine (SW) has been isolated in high yield from Swainsona procumbens and derivatised by regiospecific enzymatic reactions. In this study the regioselectivity of three commercially available enzymes, subtilisin Carlsberg, porcine pancreatic lipase (PPL) and Candida cylindracea lipase was determined for the acylation of swainsonine in predominantly anhydrous organic medium. The use of subtilisin in pyridine facilitated the single step synthesis of 2-O-butyryl-SW in a 23% yield, whilst catalysis by PPL in tetrahydrofuran gave 2-O-butyryl-SW (6%) and 1,2-di-O-butyryl-SW (31%).
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Affiliation(s)
- G G Perrone
- School of Biochemistry & Molecular Genetics, University of New South Wales, Sydney, Australia.
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Taylor WH, Sinha A, Khan IA, McDaniel ST, Esko JD. Primers of glycosaminoglycan biosynthesis from Peruvian rain forest plants. J Biol Chem 1998; 273:22260-6. [PMID: 9712841 DOI: 10.1074/jbc.273.35.22260] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We have developed a rapid, high throughput screening assay for compounds that alter the assembly of glycosaminoglycan chains in Chinese hamster ovary cells. The assay uses autoradiography to measure the binding of newly synthesized [35S]proteoglycans and [35S]glycosaminoglycans to a positively charged membrane. Screening over 1000 extracts from a random plant collection obtained from the Amazon rain forest yielded five plants that stimulated glycosaminoglycan assembly in both wild-type cells and a mutant cell line defective in xylosyltransferase (the first committed enzyme involved in glycosaminoglycan biosynthesis). Fractionation of an extract of Maieta guianensis by silica gel and reverse-phase chromatography yielded two pure compounds with stimulatory activity. Spectroscopic analysis by NMR and mass spectrometry revealed that the active principles were xylosides of dimethylated ellagic acid. One of the compounds also contained a galloyl group at C-3 of the xylose moiety. These findings suggest that plants and other natural products may be a source of agents that can potentially alter glycosaminoglycan and proteoglycan formation in animal cells.
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Affiliation(s)
- W H Taylor
- Division of Cellular and Molecular Medicine, Department of Medicine, and the Glycobiology Program, University of California, La Jolla, California 92093-0687, USA
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