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Mavliutova L, Munoz Aldeguer B, Wiklander J, Wierzbicka C, Huynh CM, Nicholls IA, Irgum K, Sellergren B. Discrimination between sialic acid linkage modes using sialyllactose-imprinted polymers. RSC Adv 2021; 11:22409-22418. [PMID: 35480790 PMCID: PMC9034230 DOI: 10.1039/d1ra02274a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/31/2021] [Indexed: 12/22/2022] Open
Abstract
Glycosylation plays an important role in various pathological processes such as cancer. One key alteration in the glycosylation pattern correlated with cancer progression is an increased level as well as changes in the type of sialylation. Developing molecularly-imprinted polymers (MIPs) with high affinity for sialic acid able to distinguish different glycoforms such as sialic acid linkages is an important task which can help in early cancer diagnosis. Sialyllactose with α2,6′ vs. α2,3′ sialic acid linkage served as a model trisaccharide template. Boronate chemistry was employed in combination with a library of imidazolium-based monomers targeting the carboxylate group of sialic acid. The influence of counterions of the cationic monomers and template on their interactions was investigated by means of 1H NMR titration studies. The highest affinities were afforded using a combination of Br− and Na+ counterions of the monomers and template, respectively. The boronate ester formation was confirmed by MS and 1H/11B NMR, indicating 1 : 2 stoichiometries between sialyllactoses and boronic acid monomer. Polymers were synthesized in the form of microparticles using boronate and imidazolium monomers. This combinatorial approach afforded MIPs selective for the sialic acid linkages and compatible with an aqueous environment. The molecular recognition properties with respect to saccharide templates and glycosylated targets were reported. 2,6′- and 2,3′-sialyllactose imprinted polymers (MIPs) capable of discriminating between two modes of sialic acid linkages in glycans are reported.![]()
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Affiliation(s)
- Liliia Mavliutova
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
| | - Bruna Munoz Aldeguer
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
| | - Jesper Wiklander
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University 391 82 Kalmar Sweden
| | - Celina Wierzbicka
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
| | | | - Ian A Nicholls
- Bioorganic and Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University 391 82 Kalmar Sweden
| | - Knut Irgum
- Department of Chemistry, Umeå University 901 87 Umeå Sweden
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society, Malmö University SE-20506 Malmö Sweden
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Zackova Suchanova J, Hejtmankova A, Neburkova J, Cigler P, Forstova J, Spanielova H. The Protein Corona Does Not Influence Receptor-Mediated Targeting of Virus-like Particles. Bioconjug Chem 2020; 31:1575-1585. [DOI: 10.1021/acs.bioconjchem.0c00240] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jirina Zackova Suchanova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Alzbeta Hejtmankova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Jitka Neburkova
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Petr Cigler
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Jitka Forstova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Hana Spanielova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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3
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McDowell K, Adams M, Baker C. Cloning and Sequencing Equine Transferrin Complementary Deoxyribonucleic Acid: Synthesis and Secretion of Transferrin by Conceptus Membranes1. Biol Reprod 2018. [DOI: 10.1093/biolreprod/52.monograph_series1.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K.J. McDowell
- Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky Lexington, Kentucky, 40546-0099
| | - M.H. Adams
- Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky Lexington, Kentucky, 40546-0099
| | - C.B. Baker
- Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky Lexington, Kentucky, 40546-0099
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Miller I, Preßlmayer-Hartler A, Wait R, Hummel K, Sensi C, Eberini I, Razzazi-Fazeli E, Gianazza E. In between — Proteomics of dog biological fluids. J Proteomics 2014; 106:30-45. [DOI: 10.1016/j.jprot.2014.04.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 03/25/2014] [Accepted: 04/10/2014] [Indexed: 10/25/2022]
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Hassan W, Silva CEB, Mohammadzai IU, da Rocha JBT, Landeira-Fernandez J. Association of oxidative stress to the genesis of anxiety: implications for possible therapeutic interventions. Curr Neuropharmacol 2014; 12:120-39. [PMID: 24669207 PMCID: PMC3964744 DOI: 10.2174/1570159x11666131120232135] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 06/16/2013] [Accepted: 11/02/2013] [Indexed: 12/27/2022] Open
Abstract
Oxidative stress caused by reactive species, including reactive oxygen species, reactive nitrogen species, and unbound, adventitious metal ions (e.g., iron [Fe] and copper [Cu]), is an underlying cause of various neurodegenerative diseases. These reactive species are an inevitable by-product of cellular respiration or other metabolic processes that may cause the oxidation of lipids, nucleic acids, and proteins. Oxidative stress has recently been implicated in depression and anxiety-related disorders. Furthermore, the manifestation of anxiety in numerous psychiatric disorders, such as generalized anxiety disorder, depressive disorder, panic disorder, phobia, obsessive-compulsive disorder, and posttraumatic stress disorder, highlights the importance of studying the underlying biology of these disorders to gain a better understanding of the disease and to identify common biomarkers for these disorders. Most recently, the expression of glutathione reductase 1 and glyoxalase 1, which are genes involved in antioxidative metabolism, were reported to be correlated with anxiety-related phenotypes. This review focuses on direct and indirect evidence of the potential involvement of oxidative stress in the genesis of anxiety and discusses different opinions that exist in this field. Antioxidant therapeutic strategies are also discussed, highlighting the importance of oxidative stress in the etiology, incidence, progression, and prevention of psychiatric disorders.
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Affiliation(s)
- Waseem Hassan
- Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Institute of Chemical Sciences, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | | | - Imdad Ullah Mohammadzai
- Institute of Chemical Sciences, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Joao Batista Teixeira da Rocha
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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6
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Prajanban BO, Shawsuan L, Daduang S, Kommanee J, Roytrakul S, Dhiravisit A, Thammasirirak S. Identification of five reptile egg whites protein using MALDI-TOF mass spectrometry and LC/MS-MS analysis. J Proteomics 2012; 75:1940-59. [PMID: 22266102 DOI: 10.1016/j.jprot.2012.01.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 01/05/2012] [Accepted: 01/05/2012] [Indexed: 12/01/2022]
Abstract
Proteomics of egg white proteins of five reptile species, namely Siamese crocodile (Crocodylus siamensis), soft-shelled turtle (Trionyx sinensis taiwanese), red-eared slider turtle (Trachemys scripta elegans), hawksbill turtle (Eretmochelys imbricate) and green turtle (Chelonia mydas) were studied by 2D-PAGE using IPG strip pH 4-7 size 7 cm and IPG strip pH 3-10 size 24 cm. The protein spots in the egg white of the five reptile species were identified by MALDI-TOF mass spectrometry and LC/MS-MS analysis. Sequence comparison with the database revealed that reptile egg white contained at least seven protein groups, such as serpine, transferrin precursor/iron binding protein, lysozyme C, teneurin-2 (fragment), interferon-induced GTP-binding protein Mx, succinate dehydrogenase iron-sulfur subunit and olfactory receptor 46. This report confirms that transferrin precursor/iron binding protein is the major component in reptile egg white. In egg white of Siamese crocodile, twenty isoforms of transferrin precursor were found. Iron binding protein was found in four species of turtle. In egg white of soft-shelled turtle, ten isoforms of lysozyme were found. Apart from well-known reptile egg white constituents, this study identified some reptile egg white proteins, such as the teneurin-2 (fragment), the interferon-induced GTP-binding protein Mx, the olfactory receptor 46 and the succinate dehydrogenase iron-sulfur subunit.
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Affiliation(s)
- Bung-on Prajanban
- Protein and Proteomics Research Group, Department of Biochemistry, Faculty of Sciences, Khon Kaen University, Khon Kaen, Thailand 40002
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Ciuraszkiewicz J, Olczak M, Watorek W. Isolation, cloning and sequencing of transferrins from red-eared turtle, African ostrich, and turkey. Comp Biochem Physiol B Biochem Mol Biol 2006; 144:301-10. [PMID: 16631400 DOI: 10.1016/j.cbpb.2006.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Revised: 03/09/2006] [Accepted: 03/10/2006] [Indexed: 11/24/2022]
Abstract
Transferrins form an important class of iron-binding proteins widely distributed in the physiological fluids of vertebrates and invertebrates. In vertebrates they are present mostly in serum as serotransferrins. In birds and reptiles transferrins are also found in eggs as ovotransferrins. However, until now only chicken and duck ovotransferrin sequences have been published. This paper presents data on the purification, biochemical analysis, cloning and sequencing of ovotransferrins from red-eared turtle, African ostrich and turkey, revealing their significant homology with other known ovotransferrin sequences. The proteins were purified by size-exclusion and anion-exchange chromatography. Isoelectric points, iron-saturated and iron-free spectra, as well as the mRNA nucleotide sequences of 2,409 nt (ORF: 2,106 nt encoding a 701-amino-acid polypeptide; ), 2,418 nt (ORF 2,118 nt encoding a 705-amino-acid polypeptide; ), and 2,397 nt (ORF: 2,118 nt encoding a 705-amino-acid polypeptide; ) were determined for ostrich (OtrF), red-eared turtle (TtrF), and turkey (MtrF) ovotransferrin, respectively.
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Affiliation(s)
- Justyna Ciuraszkiewicz
- Laboratory of Biochemistry, Institute of Biochemistry and Molecular Biology, Wroclaw University, Tamka 2, 50-137 Wroclaw, Poland
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8
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Llewellyn LE. Saxitoxin, a toxic marine natural product that targets a multitude of receptors. Nat Prod Rep 2006; 23:200-22. [PMID: 16572228 DOI: 10.1039/b501296c] [Citation(s) in RCA: 243] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Saxitoxin (STX) was discovered early last century and can contaminate seafood and drinking water, and over time has become an invaluable research tool and an internationally regulated chemical weapon. Among natural products, toxins obtain a unique reputation from their high affinity and selectivity for their target pharmacological receptor, which for STX has long been considered to only be the voltage gated sodium channel. In recent times however, STX has been discovered to also bind to calcium and potassium channels, neuronal nitric oxide synthase, STX metabolizing enzymes and two circulatory fluid proteins, namely a transferrin-like family of proteins and a unique protein found in the blood of pufferfish.
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9
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Lambert LA, Perri H, Halbrooks PJ, Mason AB. Evolution of the transferrin family: Conservation of residues associated with iron and anion binding. Comp Biochem Physiol B Biochem Mol Biol 2005; 142:129-41. [PMID: 16111909 DOI: 10.1016/j.cbpb.2005.07.007] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2005] [Revised: 07/18/2005] [Accepted: 07/18/2005] [Indexed: 11/23/2022]
Abstract
The transferrin family spans both vertebrates and invertebrates. It includes serum transferrin, ovotransferrin, lactoferrin, melanotransferrin, inhibitor of carbonic anhydrase, saxiphilin, the major yolk protein in sea urchins, the crayfish protein, pacifastin, and a protein from green algae. Most (but not all) contain two domains of around 340 residues, thought to have evolved from an ancient duplication event. For serum transferrin, ovotransferrin and lactoferrin each of the duplicated lobes binds one atom of Fe (III) and one carbonate anion. With a few notable exceptions each iron atom is coordinated to four conserved amino acid residues: an aspartic acid, two tyrosines, and a histidine, while anion binding is associated with an arginine and a threonine in close proximity. These six residues in each lobe were examined for their evolutionary conservation in the homologous N- and C-lobes of 82 complete transferrin sequences from 61 different species. Of the ligands in the N-lobe, the histidine ligand shows the most variability in sequence. Also, of note, four of the twelve insect transferrins have glutamic acid substituted for aspartic acid in the N-lobe (as seen in the bacterial ferric binding proteins). In addition, there is a wide spread substitution of lysine for the anion binding arginine in the N-lobe in many organisms including all of the fish, the sea squirt and many of the unusual family members i.e., saxiphilin and the green alga protein. It is hoped that this short analysis will provide the impetus to establish the true function of some of the TF family members that clearly lack the ability to bind iron in one or both lobes and additionally clarify the evolutionary history of this important family of proteins.
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Affiliation(s)
- Lisa A Lambert
- Department of Biology, Chatham College, Woodland Road, Pittsburgh, PA 15232, USA
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10
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Pfanzagl B, Tribl F, Koller E, Möslinger T. Homocysteine strongly enhances metal-catalyzed LDL oxidation in the presence of cystine and cysteine. Atherosclerosis 2003; 168:39-48. [PMID: 12732385 DOI: 10.1016/s0021-9150(03)00057-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Here we show that homocysteine stimulates low density lipoprotein (LDL) oxidation at copper(II) concentrations causing only a slight oxidation of LDL lipids. LDL oxidation by homocysteine and copper(II) is further enhanced in the presence of cystine, although cystine alone does not stimulate LDL oxidation with copper(II). Similarly, a combination of cysteine with homocysteine provoked a more than additive increase of oxidation. Simultaneous presence of cysteine and homocystine also resulted in a more than additive oxidative effect which was not statistically significant, however. Stimulation of LDL oxidation in the presence of homocysteine by cystine was also observed with iron(III) at acidic pH and when LDL oxidation was initiated by azo-compound generated peroxyl radicals. At pH 7.4 histidine is able to prevent LDL oxidation by copper(II) in a thiol mixture similar to the one found in human plasma if present in tenfold excess over homocysteine, but loses its inhibitory effect at higher homocysteine concentrations. The synergistic effect on metal-catalyzed LDL oxidation observed with mixtures of homocysteine and cystine or cysteine sustains the hypothesis that the epidemiological association between raised homocysteine levels and risk of cardiovascular disease is caused by an increase in oxidative stress.
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Affiliation(s)
- Beatrix Pfanzagl
- Institute of Physiology, University of Wien, Schwarzspanierstrasse 17, Austria.
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11
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Llewellyn LE, Bell PM, Moczydlowski EG. Phylogenetic survey of soluble saxitoxin-binding activity in pursuit of the function and molecular evolution of saxiphilin, a relative of transferrin. Proc Biol Sci 1997; 264:891-902. [PMID: 9225480 PMCID: PMC1688441 DOI: 10.1098/rspb.1997.0124] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Saxiphilin is a soluble protein of unknown function which binds the neurotoxin, saxitoxin (STX), with high affinity. Molecular characterization of saxiphilin from the North American bullfrog, Rana catesbeiana, has previously shown that it is a member of the transferrin family. In this study we surveyed various animal species to investigate the phylogenetic distribution of saxiphilin, as detected by the presence of soluble [3H]STX binding activity in plasma, haemolymph or tissue extracts. We found that saxiphilin activity is readily detectable in a wide variety of arthropods, fish, amphibians, and reptiles. The pharmacological characteristics of [3H]STX binding activity in phylogenetically diverse species indicates that a protein homologous to bullfrog saxiphilin is likely to be constitutively expressed in many ectothermic animals. The results suggest that the saxiphilin gene is evolutionarily as old as an ancestral gene encoding bilobed transferrin, an Fe(2+)-binding and transport protein which has been identified in several arthropods and all the vertebrates which have been studied.
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Affiliation(s)
- L E Llewellyn
- Australian Institute of Marine Science, Townsvills MC, Queensland, Australia
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12
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Abstract
The oxidation of low density lipoprotein (LDL) within atherosclerotic lesions may be involved in atherogenesis. LDL oxidation by cells in the presence of iron is faster at acidic pH. In addition, LDL oxidation by iron alone or iron cysteine in the absence of cells is much faster at acidic pH, even at mildly acidic pH (pH 6.5). The effect of pH on LDL oxidation by copper ions is more complex, in that acidity slows down the initial oxidation, as measured by conjugated dienes, hydroperoxides and thiobarbituric acid-reactive substances, but can increase the later stages of LDL oxidation as measured by increased macrophage uptake. Extensive LDL oxidation by cells in atherosclerotic lesions probably requires a source of iron or copper as catalysts for the oxidation. Iron in plasma is carried by the protein transferrin. Lowering the pH releases some of the iron from transferrin so that it can catalyse LDL oxidation. Copper is carried in plasma on caeruloplasmin and becomes more effective in catalysing LDL oxidation when the caeruloplasmin is preincubated at acidic pH, or even at pH 7.0. These effects can be seen with concentrations of caeruloplasmin and transferrin below those present in plasma. By analogy to other inflammatory and ischaemic sites, atherosclerotic lesions may well have an acidic extracellular pH, particularly within clusters of macrophages where the oxidative stress may also be high. This localised acidic pH may help to explain why atherosclerotic lesions are one of the few sites in the body where extensive LDL oxidation occurs.
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Affiliation(s)
- D S Leake
- School of Animal and Microbial Sciences, University of Reading, Berkshire, UK
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Sanchez L, Lujan L, Oria R, Castillo H, Perez D, Ena JM, Calvo M. Synthesis of lactoferrin and transport of transferrin in the lactating mammary gland of sheep. J Dairy Sci 1992; 75:1257-62. [PMID: 1597581 DOI: 10.3168/jds.s0022-0302(92)77875-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Two iron-binding proteins, lactoferrin and transferrin, are present in ruminant milk. Lactoferrin commonly has been assumed to be a product of mammary synthesis, but the origin of milk transferrin has not been elucidated. The objective of this experiment was to study the synthesis and distribution of these two proteins in the mammary gland of sheep. Explants from lactating mammary gland of sheep have been cultured in the presence of [3H]leucine to determine rates of synthesis of lactoferrin and transferrin. After incubation, [3H]lactoferrin was found, but labeled transferrin was not. The capacity of the mammary gland to synthesize lactoferrin decreased markedly in the first 24 h of lactation. Immunohistochemical techniques were utilized to identify the locations of lactoferrin and transferrin in the mammary gland. Transferrin was found in the colostrum contained in the alveolar lumen, in the cytoplasm of the secretory cells, and in the connective tissue between the mammary acini. High concentration of transferrin was found in the basal membrane of the secretory alveolar cells, mainly in those near capillary vessels. Lactoferrin was found in the colostrum and in the cytoplasm of secretory cells with a more homogeneous distribution than transferrin. The connective tissue stained negative for lactoferrin. These results suggest that, although lactoferrin is synthesized by mammary gland of the sheep, transferrin comes from blood serum, probably by a receptor-mediated mechanism of transcytosis.
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Affiliation(s)
- L Sanchez
- Facultad de Veterinaria, Zaragoza, Spain
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