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Silva J, Spiess R, Marchesi A, Flitsch SL, Gough JE, Webb SJ. Enzymatic elaboration of oxime-linked glycoconjugates in solution and on liposomes. J Mater Chem B 2022; 10:5016-5027. [PMID: 35723603 PMCID: PMC9258907 DOI: 10.1039/d2tb00714b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/11/2022] [Indexed: 11/21/2022]
Abstract
Oxime formation is a convenient one-step method for ligating reducing sugars to surfaces, producing a mixture of closed ring α- and β-anomers along with open-chain (E)- and (Z)-isomers. Here we show that despite existing as a mixture of isomers, N-acetylglucosamine (GlcNAc) oximes can still be substrates for β(1,4)-galactosyltransferase (β4GalT1). β4GalT1 catalysed the galactosylation of GlcNAc oximes by a galactose donor (UDP-Gal) both in solution and in situ on the surface of liposomes, with conversions up to 60% in solution and ca. 15-20% at the liposome surface. It is proposed that the β-anomer is consumed preferentially but long reaction times allow this isomer to be replenished by equilibration from the remaining isomers. Adding further enzymes gave more complex oligosaccharides, with a combination of α-1,3-fucosyltransferase, β4GalT1 and the corresponding sugar donors providing Lewis X coated liposomes. However, sialylation using T. cruzi trans-sialidase and sialyllactose provided only very small amounts of sialyl Lewis X (sLex) capped lipid. These observations show that combining oxime formation with enzymatic elaboration will be a useful method for the high-throughput surface modification of drug delivery vehicles, such as liposomes, with cell-targeting oligosaccharides.
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Affiliation(s)
- Joana Silva
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess St, Manchester M1 7DN, UK
| | - Reynard Spiess
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess St, Manchester M1 7DN, UK
| | - Andrea Marchesi
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess St, Manchester M1 7DN, UK
| | - Sabine L Flitsch
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess St, Manchester M1 7DN, UK
| | - Julie E Gough
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, UK
| | - Simon J Webb
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess St, Manchester M1 7DN, UK
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Gunasekara RW, Zhao Y. Recognition and protection of glycosphingolipids by synthetic nanoparticle receptors. Chem Commun (Camb) 2019; 55:4773-4776. [PMID: 30946397 PMCID: PMC7474536 DOI: 10.1039/c9cc01694e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanoparticle receptors were synthesized through micellar imprinting to bind glycosphingolipids with 20-140 μM binding affinities, meanwhile distinguishing glycan composition, the number of acyl chains, and hydroxylation of acyl chains in the lipids. The strong binding enabled the receptors to protect their target glycolipids dispersed in lipid membranes from enzymatic degradation.
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Affiliation(s)
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA.
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Gervas-Arruga J, Cebolla JJ, Irun P, Perez-Lopez J, Plaza L, Roche JC, Capablo JL, Rodriguez-Rey JC, Pocovi M, Giraldo P. Increased glycolipid storage produced by the inheritance of a complex intronic haplotype in the α-galactosidase A (GLA) gene. BMC Genet 2015; 16:109. [PMID: 26334996 PMCID: PMC4558912 DOI: 10.1186/s12863-015-0267-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/25/2015] [Indexed: 01/25/2023] Open
Abstract
Background Accumulation of galactosphingolipids is a general characteristic of Fabry disease, a lysosomal storage disorder caused by the deficient activity of α-galactosidase A encoded by the GLA gene. Although many polymorphic GLA haplotypes have been described, it is still unclear whether some of these variants are causative of disease symptoms. We report the study of an inheritance of a complex intronic haplotype (CIH) (c.-10C > T, c.369 + 990C > A, c.370-81_370-77delCAGCC, c.640-16A > G, c.1000-22C > T) within the GLA gene associated with Fabry-like symptoms and galactosphingolipid accumulation. We analysed α-Gal A activity in plasma, leukocytes and skin fibroblasts in patients, and measured accumulation of galactosphingolipids by enzymatic methods and immunofluorescence techniques. Additionally, we evaluated GLA expression using quantitative PCR, EMSA, and cDNA cloning. Results CIH carriers had an altered GLA expression pattern, although most of the carriers had high residual enzyme activity in plasma, leukocytes and in skin fibroblasts. Nonetheless, CIH carriers had significant galactosphingolipid accumulation in fibroblasts in comparison with controls, and also glycolipid deposits in renal tubules and glomeruli. EMSA assays indicated that the c.-10C > T variant in the promoter affected a nuclear protein binding site. Conclusions Thus, inheritance of the CIH caused an mRNA deregulation altering the GLA expression pattern, producing a tissue glycolipid storage. Electronic supplementary material The online version of this article (doi:10.1186/s12863-015-0267-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Javier Gervas-Arruga
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Zaragoza, Spain. .,Translational Research Unit, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Miguel Servet University Hospital, Zaragoza, Spain. .,Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain. .,Biochemistry and Molecular and Cellular Biology Department, Universidad de Zaragoza, Zaragoza, Spain.
| | - Jorge J Cebolla
- Translational Research Unit, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Miguel Servet University Hospital, Zaragoza, Spain. .,Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain. .,Biochemistry and Molecular and Cellular Biology Department, Universidad de Zaragoza, Zaragoza, Spain.
| | - Pilar Irun
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Zaragoza, Spain. .,Translational Research Unit, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Miguel Servet University Hospital, Zaragoza, Spain. .,Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain. .,Biochemistry and Molecular and Cellular Biology Department, Universidad de Zaragoza, Zaragoza, Spain.
| | - Javier Perez-Lopez
- Molecular Biology Department, Cantabria University and IFIMAV, Santander, Spain.
| | - Luis Plaza
- Anatomic Pathology Department, Miguel Servet University Hospital, Zaragoza, Spain.
| | - Jose C Roche
- Neurology Department, Miguel Servet University Hospital, Zaragoza, Spain.
| | - Jose L Capablo
- Neurology Department, Miguel Servet University Hospital, Zaragoza, Spain.
| | - Jose C Rodriguez-Rey
- Molecular Biology Department, Cantabria University and IFIMAV, Santander, Spain.
| | - Miguel Pocovi
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain. .,Biochemistry and Molecular and Cellular Biology Department, Universidad de Zaragoza, Zaragoza, Spain.
| | - Pilar Giraldo
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Zaragoza, Spain. .,Translational Research Unit, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Miguel Servet University Hospital, Zaragoza, Spain. .,Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain.
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Aparecido Cordeiro F, Bertechini Faria C, Parra Barbosa-Tessmann I. Identification of new galactose oxidase genes in Fusarium spp. J Basic Microbiol 2011; 50:527-37. [PMID: 21077113 DOI: 10.1002/jobm.201000078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Galactose oxidase (GO) converts galactose to an aldehyde and has several biotechnological applications, including cancer diagnosis. It is mainly produced by Fusarium austroamericanum but is also produced by Fusarium acuminatum and by isolates of the Fusarium graminearum and Gibberella fujikuroi complexes. The F. austroamericanum GO gaoA gene has been cloned, but the GO genes from other secreting species have not been characterized. Problems associated with the F. austroamericanum GO such as high pI and low catalytic efficiency and thermostability, and the difficult purification process makes the search for homologous genes attractive. In this work, the GO genes from Fusarium verticillioides and Fusarium subglutinans, two species of the G. fujikuroi complex, were cloned, sequenced, and analyzed. New GO genes were found in databases and were used to construct a phylogenetic tree, which revealed the existence of three orthologous lineages of GO genes in Fusarium spp. In addition, RT-PCR analyses revealed that the new GO cloned gene may be endogenously expressed in F. subglutinans but not in F. verticillioides, in the used culture conditions.
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Zakhartsev M, Momeu C. Purification of glucose oxidase from complex fermentation medium using tandem chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 858:151-8. [PMID: 17804307 DOI: 10.1016/j.jchromb.2007.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Revised: 07/18/2007] [Accepted: 08/13/2007] [Indexed: 11/20/2022]
Abstract
A fast and efficient purification method for recombinant glucose oxidase (rGOx) for flask fermentation scale (up to 2L) was designed for the purposes of characterization of rGOx mutants during directed protein evolution. The Aspergillus niger GOx was cloned into a pYES2-alphaMF-GOx construct and expressed extracellularly in yeast Saccharomyces cerevisiae. Hydrophobic interaction (HIC)/size exclusion (SEC)-tandem chromatographic system was designed for direct purification of rGOx from a conditioned complex expression medium with minimum preceding sample preparation (only adjustments to conductivity, pH and coarse filtering). HIC on Butyl 650s (50 mM ammonium acetate pH 5.5 and 1.5 M ammonium sulphate) absorbs GOx from the medium and later it is eluted by 100% stepwise gradient with salt free buffer directly into SEC column (Sephadex 200) for desalting and final polishing separation. The electrophoretic and UV-vis spectrophotometric analyses have proven enzyme purity after purification.
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