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Wißfeld J, Abou Assale T, Cuevas-Rios G, Liao H, Neumann H. Therapeutic potential to target sialylation and SIGLECs in neurodegenerative and psychiatric diseases. Front Neurol 2024; 15:1330874. [PMID: 38529039 PMCID: PMC10961342 DOI: 10.3389/fneur.2024.1330874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/21/2024] [Indexed: 03/27/2024] Open
Abstract
Sialic acids, commonly found as the terminal carbohydrate on the glycocalyx of mammalian cells, are pivotal checkpoint inhibitors of the innate immune system, particularly within the central nervous system (CNS). Sialic acid-binding immunoglobulin-like lectins (SIGLECs) expressed on microglia are key players in maintaining microglial homeostasis by recognizing intact sialylation. The finely balanced sialic acid-SIGLEC system ensures the prevention of excessive and detrimental immune responses in the CNS. However, loss of sialylation and SIGLEC receptor dysfunctions contribute to several chronic CNS diseases. Genetic variants of SIGLEC3/CD33, SIGLEC11, and SIGLEC14 have been associated with neurodegenerative diseases such as Alzheimer's disease, while sialyltransferase ST8SIA2 and SIGLEC4/MAG have been linked to psychiatric diseases such as schizophrenia, bipolar disorders, and autism spectrum disorders. Consequently, immune-modulatory functions of polysialic acids and SIGLEC binding antibodies have been exploited experimentally in animal models of Alzheimer's disease and inflammation-induced CNS tissue damage, including retinal damage. While the potential of these therapeutic approaches is evident, only a few therapies to target either sialylation or SIGLEC receptors have been tested in patient clinical trials. Here, we provide an overview of the critical role played by the sialic acid-SIGLEC axis in shaping microglial activation and function within the context of neurodegeneration and synaptopathies and discuss the current landscape of therapies that target sialylation or SIGLECs.
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Affiliation(s)
- Jannis Wißfeld
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Tawfik Abou Assale
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital Bonn, University of Bonn, Bonn, Germany
| | - German Cuevas-Rios
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Huan Liao
- Florey Institute of Neuroscience and Mental Health, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC, Australia
| | - Harald Neumann
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital Bonn, University of Bonn, Bonn, Germany
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Johns SC, Gupta P, Lee YH, Friend J, Fuster MM. Glycocalyx transduces membrane leak in brain tumor cells exposed to sharp magnetic pulsing. Biophys J 2023; 122:4425-4439. [PMID: 37992690 PMCID: PMC10698326 DOI: 10.1016/j.bpj.2023.10.020] [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: 02/24/2023] [Revised: 07/23/2023] [Accepted: 10/19/2023] [Indexed: 11/24/2023] Open
Abstract
Mechanisms by which electric (E) or magnetic (B) fields might be harnessed to affect tumor cell behavior remain poorly defined, presenting a barrier to translation. We hypothesized in early studies that the glycocalyx of lung cancer cells might play a role in mediating plasma membrane leak by low-frequency pulsed magnetic fields (Lf-PMF) generated on a low-energy solenoid platform. In testing glioblastoma and neuroblastoma cells known to overexpress glycoproteins rich in modifications by the anionic glycan sialic acid (Sia), exposure of brain tumor cells on the same platform to a pulse train that included a 5 min 50Hz Lf-PMF (dB/dt ∼ 2 T/s at 10 ms pulse widths) induced a very modest but significant protease leak above that of control nonexposed cells (with modest but significant reductions in long-term tumor cell viability after the 5 min exposure). Using a markedly higher dB/dt system (80 T/s pulses, 70 μs pulse-width at 5.9 cm from a MagVenture coil source) induced markedly greater leak by the same cells, and eliminating Sia by treating cells with AUS sialidase immediately preexposure abrogated the effect entirely in SH-SY5Y neuroblastoma cells, and partially in T98G glioblastoma cells. The system demonstrated significant leak (including inward leak of propidium iodide), with reduced leak at lower dB/dt in a variety of tumor cells. The ability to abrogate Lf-PMF protease leak by pretreatment with sialidase in SH-SY5Y brain tumor cells or with heparin lyase in A549 lung tumor cells indicated the importance of heavy Sia or heparan sulfate glycosaminoglycan glycocalyx modifications as dominant glycan species mediating Lf-PMF membrane leak in respective tumor cells. This "first-physical" Lf-PMF tumor glycocalyx event, with downstream cell stress, may represent a critical and "tunable" transduction mechanism that depends on characteristic anionic glycans overexpressed by distinct malignant tumors.
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Affiliation(s)
- Scott C Johns
- VA San Diego Healthcare System, San Diego, California; Veterans Medical Research Foundation, San Diego, California
| | - Purva Gupta
- VA San Diego Healthcare System, San Diego, California; Department of Medicine, Division of Pulmonary & Critical Care, University of California San Diego, La Jolla, California
| | - Yi-Hung Lee
- Department of Bioengineering, University of California San Diego, La Jolla, California
| | - James Friend
- Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California
| | - Mark M Fuster
- VA San Diego Healthcare System, San Diego, California; Veterans Medical Research Foundation, San Diego, California; Department of Medicine, Division of Pulmonary & Critical Care, University of California San Diego, La Jolla, California; Glycobiology Research and Training Center, University of California San Diego, La Jolla, California.
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3
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den Hollander B, Brands MM, de Boer L, Haaxma CA, Lengyel A, van Essen P, Peters G, Kwast HJT, Klein WM, Coene KLM, Lefeber DJ, van Karnebeek CDM. Oral sialic acid supplementation in NANS-CDG: Results of a single center, open-label, observational pilot study. J Inherit Metab Dis 2023; 46:956-971. [PMID: 37340906 DOI: 10.1002/jimd.12643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 06/22/2023]
Abstract
NANS-CDG is a congenital disorder of glycosylation (CDG) caused by biallelic variants in NANS, encoding an essential enzyme in de novo sialic acid synthesis. It presents with intellectual developmental disorder (IDD), skeletal dysplasia, neurologic impairment, and gastrointestinal dysfunction. Some patients suffer progressive intellectual neurologic deterioration (PIND), emphasizing the need for a therapy. In a previous study, sialic acid supplementation in knockout nansa zebrafish partially rescued skeletal abnormalities. Here, we performed the first in-human pre- and postnatal sialic-acid study in NANS-CDG. In this open-label observational study, 5 patients with NANS-CDG (range 0-28 years) were treated with oral sialic acid for 15 months. The primary outcome was safety. Secondary outcomes were psychomotor/cognitive testing, height and weight, seizure control, bone health, gastrointestinal symptoms, and biochemical and hematological parameters. Sialic acid was well tolerated. In postnatally treated patients, there was no significant improvement. For the prenatally treated patient, psychomotor and neurologic development was better than two other genotypically identical patients (one treated postnatally, one untreated). The effect of sialic acid treatment may depend on the timing, with prenatal treatment potentially benefiting neurodevelopmental outcomes. Evidence is limited, however, and longer-term follow-up in a larger number of prenatally treated patients is required.
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Affiliation(s)
- Bibiche den Hollander
- Department of Pediatrics, Emma Children's Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- United for Metabolic Diseases, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam Reproduction and Development, Amsterdam UMC, Amsterdam, The Netherlands
| | - Marion M Brands
- Department of Pediatrics, Emma Children's Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- United for Metabolic Diseases, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam Reproduction and Development, Amsterdam UMC, Amsterdam, The Netherlands
| | - Lonneke de Boer
- United for Metabolic Diseases, Amsterdam, The Netherlands
- Radboud University Medical Center, Department of Pediatric Neurology, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Charlotte A Haaxma
- Radboud University Medical Center, Department of Pediatric Neurology, Amalia Children's Hospital, Nijmegen, The Netherlands
- Radboud University Medical Center, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
| | - Anna Lengyel
- Pediatric Center, Semmelweis University, Budapest, Hungary
| | - Peter van Essen
- Radboud University Medical Center, Department of Pediatric Neurology, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Gera Peters
- Department of Rehabilitation Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hanneke J T Kwast
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Willemijn M Klein
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Karlien L M Coene
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- Laboratory of Clinical Chemistry and Haematology, Máxima Medical Centre, Veldhoven, The Netherlands
| | - Dirk J Lefeber
- United for Metabolic Diseases, Amsterdam, The Netherlands
- Radboud University Medical Center, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Clara D M van Karnebeek
- Department of Pediatrics, Emma Children's Hospital, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- United for Metabolic Diseases, Amsterdam, The Netherlands
- Emma Center for Personalized Medicine, Amsterdam Reproduction and Development, Amsterdam UMC, Amsterdam, The Netherlands
- Department of Human Genetics, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
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Park DB, Kim L, Hwang JH, Kim KT, Park JE, Choi JS, An HJ. Temporal quantitative profiling of sialyllactoses and sialic acids after oral administration of sialyllactose to mini-pigs with osteoarthritis. RSC Adv 2023; 13:1115-1124. [PMID: 36686942 PMCID: PMC9811936 DOI: 10.1039/d2ra05912f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
Sialyllactose (SL) is the most abundant acidic oligosaccharide in human breast milk and plays a primary role in various biological processes. Recently, SL has attracted attention as an excellent dietary supplement for arthritis because it is effective in cartilage protection and treatment. Despite the superior function of SL, there are few pharmacological studies of SL according to blood concentrations in arthritis models. In this study, we investigated quantitative changes in SL and sialic acids in the plasma obtained from mini-pigs with osteoarthritis throughout exogenous administration of SL using liquid chromatography-multiple reaction monitoring mass spectrometry. Plasma concentrations of SL and sialic acids in the SL-fed group showed a significant difference compared to the control group. Mini pigs were fed only Neu5Ac bound to SL, but the concentration patterns of the two types of sialic acid, Neu5Ac and Neu5Gc, were similar. In addition, the relative mRNA expression level of matrix metalloproteinases (MMPs), which is known as a critical factor in cartilage matrix degradation, was remarkably decreased in the synovial membrane of the SL-fed group. Consequently, the temporal quantitative profiling suggests that dietary SL can be metabolized and utilized in the body and may protect against cartilage degradation by suppressing MMP expression during osteoarthritis progression.
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Affiliation(s)
- Dan Bi Park
- GeneChem Inc. Yuseong-gu Daejeon 34025 Republic of Korea
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Republic of Korea
| | - Lila Kim
- GeneChem Inc. Yuseong-gu Daejeon 34025 Republic of Korea
| | - Jeong Ho Hwang
- Animal Model Research Group, Jeonbuk Branch Institute, Korea Institute of Toxicology Jeollabukdo 56212 Republic of Korea
| | - Kyung-Tai Kim
- Animal Model Research Group, Jeonbuk Branch Institute, Korea Institute of Toxicology Jeollabukdo 56212 Republic of Korea
| | - Ji Eun Park
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Republic of Korea
- Asia Glycomics Reference Site Daejeon 34134 Republic of Korea
| | - Jong-Soon Choi
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Republic of Korea
- Research Center for Materials Analysis, Korea Basic Science Institute Daejeon 34133 Republic of Korea
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University Daejeon 34134 Republic of Korea
- Asia Glycomics Reference Site Daejeon 34134 Republic of Korea
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Pang M, Zheng D, Jia P, Cao L. Novel Water-in-Oil Emulsions for Co-Loading Sialic Acid and Chitosan: Formulation, Characterization, and Stability Evaluation. Foods 2022; 11:foods11060873. [PMID: 35327295 PMCID: PMC8951255 DOI: 10.3390/foods11060873] [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: 02/21/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 02/04/2023] Open
Abstract
This study was designed to co-load sialic acid (SA) and chitosan in a water-in-oil (W/O) emulsion and investigated its characterization and stability. Emulsions were prepared using two different oils (olive oil and maize oil) and polyglycerol polyricinoleate (PGPR) alone or in combination with lecithin (LE) as emulsifiers. The results revealed that the aqueous phase of 5% (w/v) SA and 2% (w/v) chitosan could form a stable complex and make the aqueous phase into a transparent colloidal state. Increasing the concentration of PGPR and LE presented different effects on emulsion formation between olive oil-base and maize oil-base. Two stable W/O emulsions that were olive oil-based with 1.5% (w/v) PGPR+ 0.5% (w/v) LE and maize oil-based with 2% (w/v) PGPR+ 0% (w/v) LE were obtained. Initial droplet size distribution curves of the two stable emulsions displayed unimodal distribution, and the rheological curves displayed the characteristics of shear thinning and low static shear viscosity. Moreover, the storage stability showed that there was no significant change in droplet size distribution and Sauter mean diameter of the emulsions at room temperature (25 °C) for 30 days. These results indicated that the W/O emulsions could effectively co-load and protect sialic acid and chitosan and thus could be a novel method for increasing the stability of these water-soluble bioactive compounds.
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Affiliation(s)
- Min Pang
- School of Food Science and Bioengineering, Hefei University of Technology, Hefei 230009, China; (M.P.); (D.Z.); (P.J.)
- Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei 230009, China
| | - Donglei Zheng
- School of Food Science and Bioengineering, Hefei University of Technology, Hefei 230009, China; (M.P.); (D.Z.); (P.J.)
- Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei 230009, China
| | - Pengpeng Jia
- School of Food Science and Bioengineering, Hefei University of Technology, Hefei 230009, China; (M.P.); (D.Z.); (P.J.)
- Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei 230009, China
| | - Lili Cao
- School of Food Science and Bioengineering, Hefei University of Technology, Hefei 230009, China; (M.P.); (D.Z.); (P.J.)
- Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei 230009, China
- Correspondence:
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Xie Y, Li Y, Han S. Metabolic installation of macrophage-recruiting glycan ligand on tumor cell surface for in vivo tumor suppression. Bioorg Med Chem Lett 2022; 57:128500. [PMID: 34906672 DOI: 10.1016/j.bmcl.2021.128500] [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: 10/05/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 11/02/2022]
Abstract
Synthetic probes that could direct immune cells against tumors are potential immunotherapeutics. We herein report in vivo tumor suppression via an intravenously injected abiotic sialic acid (TCCSia) that could be metabolically incorporated into tumor cell surface to yield of a high affinity ligand (TCCSiaα2,3-Gal) of Siglec-1 specifically expressed on macrophages. We observed marked suppression of pulmonary metastasis and subcutaneous tumor growth of B16F10 melanoma cells in mice with TCCSia, suggesting the utility of abiotic sialic acid to modulate tumor immunity via recruiting Siglec+ immune cells.
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Affiliation(s)
- Yunzhi Xie
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361005, China
| | - Yibao Li
- Jiangxi Key Laboratory of Organo-Pharmaceutical Chemistry, Chemistry and Chemical Engineering College, Gannan Normal University, Ganzhou, Jiangxi 341000, China.
| | - Shoufa Han
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network, Xiamen University, Xiamen 361005, China.
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Tran C, Turolla L, Ballhausen D, Buros SC, Teav T, Gallart-Ayala H, Ivanisevic J, Faouzi M, Lefeber DJ, Ivanovski I, Giangiobbe S, Caraffi SG, Garavelli L, Superti-Furga A. The fate of orally administered sialic acid: First insights from patients with N-acetylneuraminic acid synthase deficiency and control subjects. Mol Genet Metab Rep 2021; 28:100777. [PMID: 34258226 PMCID: PMC8251509 DOI: 10.1016/j.ymgmr.2021.100777] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND In NANS deficiency, biallelic mutations in the N-acetylneuraminic acid synthase (NANS) gene impair the endogenous synthesis of sialic acid (N-acetylneuraminic acid) leading to accumulation of the precursor, N-acetyl mannosamine (ManNAc), and to a multisystemic disorder with intellectual disability. The aim of this study was to determine whether sialic acid supplementation might be a therapeutic avenue for NANS-deficient patients. METHODS Four adults and two children with NANS deficiency and four adult controls received oral NeuNAc acid (150 mg/kg/d) over three days. Total NeuNAc, free NeuNAc and ManNAc were analyzed in plasma and urine at different time points. RESULTS Upon NeuNAc administration, plasma free NeuNAc increased within hours (P < 0.001) in control and in NANS-deficient individuals. Total and free NeuNAc concentrations also increased in the urine as soon as 6 h after beginning of oral administration in both groups. NeuNAc did not affect plasma and urinary ManNAc, that remained higher in NANS deficient subjects than in controls (day 1-3; all P < 0.01). Oral NeuNAc was well tolerated with no significant side effects. DISCUSSION Orally administered free NeuNAc was rapidly absorbed but also rapidly excreted in the urine. It did not change ManNAc levels in either patients or controls, indicating that it may not achieve enough feedback inhibition to reduce ManNAc accumulation in NANS-deficient subjects. Within the limitations of this study these results do not support a potential for oral free NeuNAc in the treatment of NANS deficiency but they provide a basis for further therapeutic approaches in this condition.
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Affiliation(s)
- Christel Tran
- Center for Molecular Diseases, Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Switzerland
| | - Licia Turolla
- Medical Genetics Unit, Azienda ULSS 2, Treviso, Italy
| | - Diana Ballhausen
- Pediatric Metabolic Unit, Pediatrics, Woman-Mother-Child Department, University of Lausanne and University Hospital of Lausanne, Switzerland
| | | | - Tony Teav
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne, Switzerland
| | - Hector Gallart-Ayala
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne, Switzerland
| | - Julijana Ivanisevic
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne, Switzerland
| | - Mohamed Faouzi
- Division of Biostatistics, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland
| | - Dirk J. Lefeber
- Translational Metabolic Laboratory, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ivan Ivanovski
- Medical Genetics Unit, Maternal and Child Health Department, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
- Institute of Medical Genetics, University of Zurich, Switzerland
| | - Sara Giangiobbe
- Medical Genetics Unit, Maternal and Child Health Department, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Stefano Giuseppe Caraffi
- Medical Genetics Unit, Maternal and Child Health Department, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Livia Garavelli
- Medical Genetics Unit, Maternal and Child Health Department, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Andrea Superti-Furga
- Center for Molecular Diseases, Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Switzerland
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Serum Antibodies to N-Glycolylneuraminic Acid Are Elevated in Duchenne Muscular Dystrophy and Correlate with Increased Disease Pathology in Cmah -/-mdx Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:1474-1486. [PMID: 34294193 DOI: 10.1016/j.ajpath.2021.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 04/01/2021] [Accepted: 04/26/2021] [Indexed: 10/20/2022]
Abstract
Humans cannot synthesize the common mammalian sialic acid N-glycolylneuraminic acid (Neu5Gc) because of an inactivating deletion in the cytidine-5'-monophospho-(CMP)-N-acetylneuraminic acid hydroxylase (CMAH) gene responsible for its synthesis. Human Neu5Gc deficiency can lead to development of anti-Neu5Gc serum antibodies, the levels of which can be affected by Neu5Gc-containing diets and by disease. Metabolic incorporation of dietary Neu5Gc into human tissues in the face of circulating antibodies against Neu5Gc-bearing glycans is thought to exacerbate inflammation-driven diseases like cancer and atherosclerosis. Probing of sera with sialoglycan arrays indicated that patients with Duchenne muscular dystrophy (DMD) had a threefold increase in overall anti-Neu5Gc antibody titer compared with age-matched controls. These antibodies recognized a broad spectrum of Neu5Gc-containing glycans. Human-like inactivation of the Cmah gene in mice is known to modulate severity in a variety of mouse models of human disease, including the X chromosome-linked muscular dystrophy (mdx) model for DMD. Cmah-/-mdx mice can be induced to develop anti-Neu5Gc-glycan antibodies as humans do. The presence of anti-Neu5Gc antibodies, in concert with induced Neu5Gc expression, correlated with increased severity of disease pathology in Cmah-/-mdx mice, including increased muscle fibrosis, expression of inflammatory markers in the heart, and decreased survival. These studies suggest that patients with DMD who harbor anti-Neu5Gc serum antibodies might exacerbate disease severity when they ingest Neu5Gc-rich foods, like red meats.
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Villacrés C, Tayi VS, Butler M. Strategic feeding of NS0 and CHO cell cultures to control glycan profiles and immunogenic epitopes of monoclonal antibodies. J Biotechnol 2021; 333:49-62. [PMID: 33901620 DOI: 10.1016/j.jbiotec.2021.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 04/03/2021] [Accepted: 04/18/2021] [Indexed: 01/12/2023]
Abstract
The control of glycosylation profiles is essential to the consistent manufacture of therapeutic monoclonal antibodies that may be produced from a variety of cell lines including CHO and NS0. Of particular concern is the potential for generating non-human epitopes such as N-glycolylneuraminic acid (Neu5Gc) and Galα1-3 Gal that may be immunogenic. We have looked at the effects of a commonly used media supplements of manganese, galactose and uridine (MGU) on Mab production from CHO and NS0 cells in enhancing galactosylation and sialylation as well as the generation of these non-human glycan epitopes. In the absence of the MGU supplement, the humanized IgG1 antibody (Hu1D10) produced from NS0 cells showed a low level of mono- and di-sialylated structures (SI:0.09) of which 75 % of sialic acid was Neu5Gc. The chimeric human-llama Mab (EG2-hFc) produced from CHO cells showed an equally low level of sialylation (SI: 0.12) but the Neu5Gc content of sialic acid was negligible (<3%). Combinations of the MGU supplements added to the production cultures resulted in a substantial increase in the galactosylation of both Mabs (up to GI:0.78 in Hu1D10 and 0.81 in EG2-hFc). However, the effects on sialylation differed between the two Mabs. We observed a slight increase in sialylation of the EG2-hFc Mab by a combination of MG but it appeared that one of the components (uridine) was inhibitory to sialylation. On the other hand, MG or MGU increased sialylation of Hu1D10 substantially (SI:0.72) with an increase that could be attributed predominantly to the formation of Neu5Ac rather than Neu5Gc. The increased level of galactosylation observed with MG or MGU was attributed to an activation of the galactosyl transferase enzymes through enhanced intracellular levels of UDP-Gal and the availability of Mn2+ as an enzymic co-factor. However, this effect not only increased the desirable beta 1-4 Gal linkage to GlcNAc but unfortunately in NS0 cells increased the formation of Galα1-3 Gal which was shown to increase x3 in the presence of combinations of the MGU supplements. Supplementation of media with fetal bovine serum (FBS) increased the availability of free Neu5Ac which resulted in a significant increase in the sialylation of Hu1D10 from NS0 cells. This also resulted in a significant decrease in the proportion of Neu5Gc in the measured sialic acid from the Mab.
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Affiliation(s)
- Carina Villacrés
- Department of Microbiology, University of Manitoba, Winnipeg, MB, R3T2N2, Canada
| | - Venkata S Tayi
- Department of Microbiology, University of Manitoba, Winnipeg, MB, R3T2N2, Canada
| | - Michael Butler
- Department of Microbiology, University of Manitoba, Winnipeg, MB, R3T2N2, Canada; National Institute for Bioprocessing Research & Training (NIBRT), Fosters Avenue, Dublin, A94 X099, Ireland.
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10
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Yang H, Lu L, Chen X. An overview and future prospects of sialic acids. Biotechnol Adv 2020; 46:107678. [PMID: 33285252 DOI: 10.1016/j.biotechadv.2020.107678] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/11/2020] [Accepted: 11/30/2020] [Indexed: 12/21/2022]
Abstract
Sialic acids (Sias) are negatively charged functional monosaccharides present in a wide variety of natural sources (plants, animals and microorganisms). Sias play an important role in many life processes, which are widely applied in the medical and food industries as intestinal antibacterials, antivirals, anti-oxidative agents, food ingredients, and detoxification agents. Most Sias are composed of N-acetylneuraminic acid (Neu5Ac, >99%), and Sia is its most commonly used name. In this article, we review Sias in terms of their structures, applications, determination methods, metabolism, and production strategies. In particular, we summarise and compare different production strategies, including extraction from natural sources, chemical synthesis, polymer decomposition, enzymatic synthesis, whole-cell catalysis, and de novo biosynthesis via microorganism fermentation. We also discuss research on their physiological functions and applications, barriers to efficient production, and strategies for overcoming these challenges. We focus on efficient de novo biosynthesis strategies for Neu5Ac via microbial fermentation using novel synthetic biology tools and methods that may be applied in future. This work provides a comprehensive overview of recent advances on Sias, and addresses future challenges regarding their functions, applications, and production.
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Affiliation(s)
- Haiquan Yang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Liping Lu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; College of life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Xianzhong Chen
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
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11
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Abstract
In this review, we focus on the metabolism of mammalian glycan-associated monosaccharides, where the vast majority of our current knowledge comes from research done during the 1960s and 1970s. Most monosaccharides enter the cell using distinct, often tissue specific transporters from the SLC2A family. If not catabolized, these monosaccharides can be activated to donor nucleotide sugars and used for glycan synthesis. Apart from exogenous and dietary sources, all monosaccharides and their associated nucleotide sugars can be synthesized de novo, using mostly glucose to produce all nine nucleotide sugars present in human cells. Today, monosaccharides are used as treatment options for a small number of rare genetic disorders and even some common conditions. Here, we cover therapeutic applications of these sugars and highlight biochemical gaps that must be revisited as we go forward.
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Affiliation(s)
- Paulina Sosicka
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Bobby G. Ng
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
| | - Hudson H. Freeze
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States
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12
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Cheng B, Dong L, Zhu Y, Huang R, Sun Y, You Q, Song Q, Paton JC, Paton AW, Chen X. 9-Azido Analogues of Three Sialic Acid Forms for Metabolic Remodeling of Cell-Surface Sialoglycans. ACS Chem Biol 2019; 14:2141-2147. [PMID: 31584261 DOI: 10.1021/acschembio.9b00556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Neu5Ac, Neu5Gc, and KDN are three forms of sialic acids in vertebrates that possess distinct biological functions. Herein, we report the synthesis and metabolic incorporation of the 9-azido analogues of three sialic acid forms in mammalian cells. The incorporated sialic acid analogues enable fluorescent imaging of cell-surface sialoglycans and proteomic profiling of sialoglycoproteins. Furthermore, we apply them to metabolically engineer cell surfaces with sialoglycans terminated with distinct sialic acids or their 9-azido analogues. The remodeled cells expressing specific cell-surface sialoglycoforms show distinct binding affinity toward subtilase cytotoxin (SubAB), a toxin secreted by Shiga toxigenic Escherichia coli. The 9-azido analogues of sialic acid forms developed in this work provide a versatile tool for metabolic remodeling of cell-surface properties and modulating pathogen-host interactions.
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Affiliation(s)
| | | | | | | | | | | | | | - James C. Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, University of Adelaide, Adelaide SA 5005, Australia
| | - Adrienne W. Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, University of Adelaide, Adelaide SA 5005, Australia
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13
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Chung Y, Mohanakrishnan R, Brossmer R, Gong Q, Lönnerdal B, Jue T. A mouse model and
19
F
NMR
approach to investigate the effects of sialic acid supplementation on cognitive development. FEBS Lett 2019; 594:135-143. [DOI: 10.1002/1873-3468.13548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/01/2019] [Accepted: 07/08/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Youngran Chung
- Department of Biochemistry & Molecular Medicine, Cell Biology University of California Davis CA USA
| | - Raagav Mohanakrishnan
- Department of Biochemistry & Molecular Medicine, Cell Biology University of California Davis CA USA
| | | | - Qizhi Gong
- Department of Human Anatomy University of California Davis CA USA
| | - Bo Lönnerdal
- Department of Nutrition University of California Davis CA USA
| | - Thomas Jue
- Department of Biochemistry & Molecular Medicine, Cell Biology University of California Davis CA USA
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14
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Dhar C, Sasmal A, Varki A. From "Serum Sickness" to "Xenosialitis": Past, Present, and Future Significance of the Non-human Sialic Acid Neu5Gc. Front Immunol 2019; 10:807. [PMID: 31057542 PMCID: PMC6481270 DOI: 10.3389/fimmu.2019.00807] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/26/2019] [Indexed: 01/01/2023] Open
Abstract
The description of "serum sickness" more than a century ago in humans transfused with animal sera eventually led to identification of a class of human antibodies directed against glycans terminating in the common mammalian sialic acid N-Glycolylneuraminic acid (Neu5Gc), hereafter called "Neu5Gc-glycans." The detection of such glycans in malignant and fetal human tissues initially raised the possibility that it was an oncofetal antigen. However, "serum sickness" antibodies were also noted in various human disease states. These findings spurred further research on Neu5Gc, and the discovery that it is not synthesized in the human body due to a human-lineage specific genetic mutation in the enzyme CMAH. However, with more sensitive techniques Neu5Gc-glycans were detected in smaller quantities on certain human cell types, particularly epithelia and endothelia. The likely explanation is metabolic incorporation of Neu5Gc from dietary sources, especially red meat of mammalian origin. This incorporated Neu5Gc on glycans appears to be the first example of a "xeno-autoantigen," against which varying levels of "xeno-autoantibodies" are present in all humans. The resulting chronic inflammation or "xenosialitis" may have important implications in human health and disease, especially in conditions known to be aggravated by consumption of red meat. In this review, we will cover the early history of the discovery of "serum sickness" antibodies, the subsequent recognition that they were partly directed against Neu5Gc-glycans, the discovery of the genetic defect eliminating Neu5Gc production in humans, and the later recognition that this was not an oncofetal antigen but the first example of a "xeno-autoantigen." Further, we will present comments about implications for disease risks associated with red meat consumption such as cancer and atherosclerosis. We will also mention the potential utility of these anti-Neu5Gc-glycan antibodies in cancer immunotherapy and provide some suggestions and perspectives for the future. Other reviews in this special issue cover many other aspects of this unusual pathological process, for which there appears to be no other described precedent.
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Affiliation(s)
- Chirag Dhar
- Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, United States.,Glycobiology Research and Training Center, University of California, San Diego, La Jolla, CA, United States
| | - Aniruddha Sasmal
- Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, United States.,Glycobiology Research and Training Center, University of California, San Diego, La Jolla, CA, United States
| | - Ajit Varki
- Departments of Medicine and Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, United States.,Glycobiology Research and Training Center, University of California, San Diego, La Jolla, CA, United States
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15
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Xue Z, Zhao H, Zhu R, Chen C, Cao H, Han J, Han S. On the use of abiotic sialic acids to attenuate cell inflammation. Sci Rep 2018; 8:17320. [PMID: 30470771 PMCID: PMC6251910 DOI: 10.1038/s41598-018-35477-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/06/2018] [Indexed: 01/22/2023] Open
Abstract
Sialic acid (Sia) residues on cell surface are critical for myriad cellular events such as immunity and inflammation. We herein reported the use of abiotic Sia to raise the thresholds of inflammatory cell responses. Identified from a panel of structurally diversified Sia analogs via a cell inflammation assay, Sia-2, with N-butyryl moiety at C-5, markedly lowered LPS-stimulated NF-κB activity in macrophages. Further analysis shows that Sia-2 attenuates phosphorylation of IκB and Erk1/2/p38/JNK, critical for NF-κB signaling and MAPK signaling, and lowers gene transcription of proinflammatory interleukin-6. These results support the use of abiotic Sia as promising agents to modulate cell surface Sia-pertinent cell signaling.
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Affiliation(s)
- Zhongwei Xue
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, State Key Laboratory for Physical Chemistry of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China
| | - Hu Zhao
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, State Key Laboratory for Physical Chemistry of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China
| | - Rui Zhu
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, State Key Laboratory for Physical Chemistry of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China
| | - Congcong Chen
- National Glycoengineering research center, Shandong University, Jinan, 250012, China
| | - Hongzhi Cao
- National Glycoengineering research center, Shandong University, Jinan, 250012, China
| | - Jiahuai Han
- State key Laboratory of Cellular Stress Biology, Innovation Center for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, 361005, China
| | - Shoufa Han
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, State Key Laboratory for Physical Chemistry of Solid Surfaces, the Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China.
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16
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Park D, Xu G, Barboza M, Shah IM, Wong M, Raybould H, Mills DA, Lebrilla CB. Enterocyte glycosylation is responsive to changes in extracellular conditions: implications for membrane functions. Glycobiology 2018; 27:847-860. [PMID: 28486580 DOI: 10.1093/glycob/cwx041] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/05/2017] [Indexed: 12/20/2022] Open
Abstract
Epithelial cells in the lining of the intestines play critical roles in maintaining homeostasis while challenged by dynamic and sudden changes in luminal contents. Given the high density of glycosylation that encompasses their extracellular surface, environmental changes may lead to extensive reorganization of membrane-associated glycans. However, neither the molecular details nor the consequences of conditional glycan changes are well understood. Here we assessed the sensitivity of Caco-2 and HT-29 membrane N-glycosylation to variations in (i) dietary elements, (ii) microbial fermentation products and (iii) cell culture parameters relevant to intestinal epithelial cell growth and survival. Based on global LC-MS glycomic and statistical analyses, the resulting glycan expression changes were systematic, dependent upon the conditions of each controlled environment. Exposure to short chain fatty acids produced significant increases in fucosylation while further acidification promoted hypersialylation. Notably, among all conditions, increases of high mannose type glycans were identified as a major response when extracellular fructose, galactose and glutamine were independently elevated. To examine the functional consequences of this discrete shift in the displayed glycome, we applied a chemical inhibitor of the glycan processing mannosidase, globally intensifying high mannose expression. The data reveal that upregulation of high mannose glycosylation has detrimental effects on basic intestinal epithelium functions by altering permeability, host-microbe associations and membrane protein activities.
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Affiliation(s)
| | | | - Mariana Barboza
- Department of Chemistry.,Department of Anatomy, Physiology and Cell Biology
| | - Ishita M Shah
- Department of Food Science and Technology, University of California, 1 Shields Ave, Davis, CA 95616,USA
| | | | | | - David A Mills
- Department of Food Science and Technology, University of California, 1 Shields Ave, Davis, CA 95616,USA
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17
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Wratil PR, Horstkorte R. Metabolic Glycoengineering of Sialic Acid Using N-acyl-modified Mannosamines. J Vis Exp 2017. [PMID: 29286437 DOI: 10.3791/55746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Sialic acid (Sia) is a highly important constituent of glycoconjugates, such as N- and O-glycans or glycolipids. Due to its position at the non-reducing termini of oligo- and polysaccharides, as well as its unique chemical characteristics, sialic acid is involved in a multitude of different receptor-ligand interactions. By modifying the expression of sialic acid on the cell surface, sialic acid-dependent interactions will consequently be influenced. This can be helpful to investigate sialic acid-dependent interactions and has the potential to influence certain diseases in a beneficial way. Via metabolic glycoengineering (MGE), the expression of sialic acid on the cell surface can be modulated. Herein, cells, tissues, or even entire animals are treated with C2-modified derivatives of N-acetylmannosamine (ManNAc). These amino sugars act as sialic acid precursor molecules and therefore are metabolized to the corresponding sialic acid species and expressed on glycoconjugates. Applying this method produces intriguing effects on various biological processes. For example, it can drastically reduce the expression of polysialic acid (polySia) in treated neuronal cells and thus affects neuronal growth and differentiation. Here, we show the chemical synthesis of two of the most common C2-modified N-acylmannosamine derivatives, N-propionylmannosamine (ManNProp) as well as N-butanoylmannosamine (ManNBut), and further show how these non-natural amino sugars can be applied in cell culture experiments. The expression of modified sialic acid species is quantified by high performance liquid chromatography (HPLC) and further analyzed via mass spectrometry. The effects on polysialic acid expression are elucidated via Western blot using a commercially available polysialic acid antibody.
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Affiliation(s)
- Paul R Wratil
- Max von Pettenkofer-Institut & Genzentrum, Virologie, Nationales Referenzzentrum für Retroviren, Medizinische Fakultät, LMU München; Institut für Laboratoriumsmedizin, klinische Chemie und Pathobiochemie, Charité - Universitätsmedizin Berlin
| | - Rüdiger Horstkorte
- Institut für Physiologische Chemie, Martin-Luther-Universität Halle-Wittenberg;
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18
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Badr HA, AlSadek DMM, El-Houseini ME, Saeui CT, Mathew MP, Yarema KJ, Ahmed H. Harnessing cancer cell metabolism for theranostic applications using metabolic glycoengineering of sialic acid in breast cancer as a pioneering example. Biomaterials 2017; 116:158-173. [PMID: 27926828 PMCID: PMC5193387 DOI: 10.1016/j.biomaterials.2016.11.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 11/14/2016] [Accepted: 11/24/2016] [Indexed: 12/18/2022]
Abstract
Abnormal cell surface display of sialic acids - a family of unusual 9-carbon sugars - is widely recognized as distinguishing feature of many types of cancer. Sialoglycans, however, typically cannot be identified with sufficiently high reproducibility and sensitivity to serve as clinically accepted biomarkers and similarly, almost all efforts to exploit cancer-specific differences in sialylation signatures for therapy remain in early stage development. In this report we provide an overview of important facets of glycosylation that contribute to cancer in general with a focus on breast cancer as an example of malignant disease characterized by aberrant sialylation. We then describe how cancer cells experience nutrient deprivation during oncogenesis and discuss how the resulting metabolic reprogramming, which endows breast cancer cells with the ability to obtain nutrients during scarcity, constitutes an "Achilles' heel" that we believe can be exploited by metabolic glycoengineering (MGE) strategies to develop new diagnostic methods and therapeutic approaches. In particular, we hypothesize that adaptations made by breast cancer cells that allow them to efficiently scavenge sialic acid during times of nutrient deprivation renders them vulnerable to MGE, which refers to the use of exogenously-supplied, non-natural monosaccharide analogues to modulate targeted aspects of glycosylation in living cells and animals. In specific, once non-natural sialosides are incorporated into the cancer "sialome" they can be exploited as epitopes for immunotherapy or as chemical tags for targeted delivery of imaging or therapeutic agents selectively to tumors.
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Affiliation(s)
- Haitham A Badr
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Dina M M AlSadek
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Motawa E El-Houseini
- Cancer Biology Department, National Cancer Institute, Cairo University, Cairo 11796, Egypt
| | - Christopher T Saeui
- Department of Biomedical Engineering and Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD 21231, USA
| | - Mohit P Mathew
- Department of Biomedical Engineering and Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD 21231, USA
| | - Kevin J Yarema
- Department of Biomedical Engineering and Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD 21231, USA.
| | - Hafiz Ahmed
- GlycoMantra, Inc., Baltimore, MD 21227, USA.
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19
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Röhrig CH, Choi SSH, Baldwin N. The nutritional role of free sialic acid, a human milk monosaccharide, and its application as a functional food ingredient. Crit Rev Food Sci Nutr 2016; 57:1017-1038. [DOI: 10.1080/10408398.2015.1040113] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Sharon S. H. Choi
- Intertek Scientific & Regulatory Consultancy, Mississauga, Ontario, Canada
| | - Nigel Baldwin
- Intertek Scientific & Regulatory Consultancy, Hampshire, United Kingdom
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20
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Wratil PR, Horstkorte R, Reutter W. Metabolic Glycoengineering with N-Acyl Side Chain Modified Mannosamines. Angew Chem Int Ed Engl 2016; 55:9482-512. [PMID: 27435524 DOI: 10.1002/anie.201601123] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Indexed: 12/14/2022]
Abstract
In metabolic glycoengineering (MGE), cells or animals are treated with unnatural derivatives of monosaccharides. After entering the cytosol, these sugar analogues are metabolized and subsequently expressed on newly synthesized glycoconjugates. The feasibility of MGE was first discovered for sialylated glycans, by using N-acyl-modified mannosamines as precursor molecules for unnatural sialic acids. Prerequisite is the promiscuity of the enzymes of the Roseman-Warren biosynthetic pathway. These enzymes were shown to tolerate specific modifications of the N-acyl side chain of mannosamine analogues, for example, elongation by one or more methylene groups (aliphatic modifications) or by insertion of reactive groups (bioorthogonal modifications). Unnatural sialic acids are incorporated into glycoconjugates of cells and organs. MGE has intriguing biological consequences for treated cells (aliphatic MGE) and offers the opportunity to visualize the topography and dynamics of sialylated glycans in vitro, ex vivo, and in vivo (bioorthogonal MGE).
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Affiliation(s)
- Paul R Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimallee 22, 14195, Berlin, Germany.
| | - Rüdiger Horstkorte
- Institut für Physiologische Chemie, Martin-Luther-Universität Halle-Wittenberg, Hollystrasse 1, 06114, Halle, Germany.
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin Berlin, Arnimallee 22, 14195, Berlin, Germany
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21
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Wratil PR, Horstkorte R, Reutter W. Metabolisches Glykoengineering mitN-Acyl-Seiten- ketten-modifizierten Mannosaminen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601123] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Paul R. Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie; Charité - Universitätsmedizin Berlin; Arnimallee 22 14195 Berlin Deutschland
| | - Rüdiger Horstkorte
- Institut für Physiologische Chemie; Martin-Luther-Universität Halle-Wittenberg; Hollystraße 1 06114 Halle Deutschland
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie; Charité - Universitätsmedizin Berlin; Arnimallee 22 14195 Berlin Deutschland
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22
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Nieto-Garcia O, Wratil PR, Nguyen LD, Böhrsch V, Hinderlich S, Reutter W, Hackenberger CPR. Inhibition of the key enzyme of sialic acid biosynthesis by C6-Se modified N-acetylmannosamine analogs. Chem Sci 2016; 7:3928-3933. [PMID: 30155038 PMCID: PMC6013775 DOI: 10.1039/c5sc04082e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/13/2016] [Indexed: 01/11/2023] Open
Abstract
Synthetically accessible C6-analogs of N-acetylmannosamine (ManNAc) were tested as potential inhibitors of the bifunctional UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase (GNE/MNK), the key enzyme of sialic acid biosynthesis. Enzymatic experiments revealed that the modification introduced at the C6 saccharide position strongly influences the inhibitory potency. A C6-ManNAc diselenide dimer showed the strongest kinase inhibition in the low μM range among all the substrates tested and successfully reduced cell surface sialylation in Jurkat cells.
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Affiliation(s)
- Olaia Nieto-Garcia
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
| | - Paul R Wratil
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Long D Nguyen
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Verena Böhrsch
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
| | - Stephan Hinderlich
- Beuth Hochschule für Technik Berlin , Department Life Sciences & Technology , Seestrase 64 , 13347 Berlin , Germany .
| | - Werner Reutter
- Institut für Laboratoriumsmedizin , Klinische Chemie und Pathobiochemie , Charié-Universitätsmedizin Berlin , Arnimalee 22 , 14195 Berlin , Germany .
| | - Christian P R Hackenberger
- Leibniz-Institut für Molekulare Pharmakologie , Robert-Roessle-Strasse 10 , 13125 Berlin , Germany
- Humboldt Universität zu Berlin , Department Chemie , Brook-Taylor-Strasse 2 , 12489 , Berlin , Germany .
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23
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Lin B, Wu X, Zhao H, Tian Y, Han J, Liu J, Han S. Redirecting immunity via covalently incorporated immunogenic sialic acid on the tumor cell surface. Chem Sci 2016; 7:3737-3741. [PMID: 29997860 PMCID: PMC6008587 DOI: 10.1039/c5sc04133c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 02/23/2016] [Indexed: 12/17/2022] Open
Abstract
Techniques eliciting anti-tumor immunity are of interest for immunotherapy. We herein report the covalent incorporation of a non-self immunogen into the tumor glycocalyx by metabolic oligosaccharide engineering with 2,4-dinitrophenylated sialic acid (DNPSia). This enables marked suppression of pulmonary metastasis and subcutaneous tumor growth of B16F10 melanoma cells in mice preimmunized to produce anti-DNP antibodies. Located on the exterior glycocalyx, DNPSia is well-positioned to recruit antibodies. Given the high levels of natural anti-DNP antibodies in humans and ubiquitous sialylation across many cancers, DNPSia offers a simplified route to redirect immunity against diverse tumors without recourse to preimmunization.
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Affiliation(s)
- Bijuan Lin
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Xuanjun Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Hu Zhao
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Yunpeng Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Jiahuai Han
- State Key Laboratory of Cellular Stress Biology , Innovation Center for Cell Signaling Network , School of Life Sciences , Xiamen University , Xiamen , 361005 , China
| | - Jian Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Shoufa Han
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Department of Chemical Biology , College of Chemistry and Chemical Engineering , The Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Signaling Network , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
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24
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van Karnebeek CDM, Bonafé L, Wen XY, Tarailo-Graovac M, Balzano S, Royer-Bertrand B, Ashikov A, Garavelli L, Mammi I, Turolla L, Breen C, Donnai D, Cormier-Daire V, Heron D, Nishimura G, Uchikawa S, Campos-Xavier B, Rossi A, Hennet T, Brand-Arzamendi K, Rozmus J, Harshman K, Stevenson BJ, Girardi E, Superti-Furga G, Dewan T, Collingridge A, Halparin J, Ross CJ, Van Allen MI, Rossi A, Engelke UF, Kluijtmans LAJ, van der Heeft E, Renkema H, de Brouwer A, Huijben K, Zijlstra F, Heise T, Boltje T, Wasserman WW, Rivolta C, Unger S, Lefeber DJ, Wevers RA, Superti-Furga A. NANS-mediated synthesis of sialic acid is required for brain and skeletal development. Nat Genet 2016; 48:777-84. [DOI: 10.1038/ng.3578] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/29/2016] [Indexed: 12/15/2022]
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25
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Chu Y, Oum YH, Carrico IS. Surface modification via strain-promoted click reaction facilitates targeted lentiviral transduction. Virology 2015; 487:95-103. [PMID: 26499046 DOI: 10.1016/j.virol.2015.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/19/2015] [Accepted: 09/21/2015] [Indexed: 11/29/2022]
Abstract
As a result of their ability to integrate into the genome of both dividing and non-dividing cells, lentiviruses have emerged as a promising vector for gene delivery. Targeted gene transduction of specific cells and tissues by lentiviral vectors has been a major goal, which has proven difficult to achieve. We report a novel targeting protocol that relies on the chemoselective attachment of cancer specific ligands to unnatural glycans on lentiviral surfaces. This strategy exhibits minimal perturbation on virus physiology and demonstrates remarkable flexibility. It allows for targeting but can be more broadly useful with applications such as vector purification and immunomodulation.
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Affiliation(s)
- Yanjie Chu
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA
| | - Yoon Hyeun Oum
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA
| | - Isaac S Carrico
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA; Institute of Chemical Biology and Drug Discovery, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA.
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Erikson E, Wratil PR, Frank M, Ambiel I, Pahnke K, Pino M, Azadi P, Izquierdo-Useros N, Martinez-Picado J, Meier C, Schnaar RL, Crocker PR, Reutter W, Keppler OT. Mouse Siglec-1 Mediates trans-Infection of Surface-bound Murine Leukemia Virus in a Sialic Acid N-Acyl Side Chain-dependent Manner. J Biol Chem 2015; 290:27345-27359. [PMID: 26370074 DOI: 10.1074/jbc.m115.681338] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Indexed: 01/21/2023] Open
Abstract
Siglec-1 (sialoadhesin, CD169) is a surface receptor on human cells that mediates trans-enhancement of HIV-1 infection through recognition of sialic acid moieties in virus membrane gangliosides. Here, we demonstrate that mouse Siglec-1, expressed on the surface of primary macrophages in an interferon-α-responsive manner, captures murine leukemia virus (MLV) particles and mediates their transfer to proliferating lymphocytes. The MLV infection of primary B-cells was markedly more efficient than that of primary T-cells. The major structural protein of MLV particles, Gag, frequently co-localized with Siglec-1, and trans-infection, primarily of surface-bound MLV particles, efficiently occurred. To explore the role of sialic acid for MLV trans-infection at a submolecular level, we analyzed the potential of six sialic acid precursor analogs to modulate the sialylated ganglioside-dependent interaction of MLV particles with Siglec-1. Biosynthetically engineered sialic acids were detected in both the glycolipid and glycoprotein fractions of MLV producer cells. MLV released from cells carrying N-acyl-modified sialic acids displayed strikingly different capacities for Siglec-1-mediated capture and trans-infection; N-butanoyl, N-isobutanoyl, N-glycolyl, or N-pentanoyl side chain modifications resulted in up to 92 and 80% reduction of virus particle capture and trans-infection, respectively, whereas N-propanoyl or N-cyclopropylcarbamyl side chains had no effect. In agreement with these functional analyses, molecular modeling indicated reduced binding affinities for non-functional N-acyl modifications. Thus, Siglec-1 is a key receptor for macrophage/lymphocyte trans-infection of surface-bound virions, and the N-acyl side chain of sialic acid is a critical determinant for the Siglec-1/MLV interaction.
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Affiliation(s)
- Elina Erikson
- Institute of Medical Virology, National Reference Center for Retroviruses, University of Frankfurt, 60596 Frankfurt am Main, Germany,; Department of Infectious Diseases, Virology, University of Heidelberg, 69120 Heidelberg, Germany
| | - Paul R Wratil
- the Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité Universitätsmedizin Berlin, 12200 Berlin, Germany
| | | | - Ina Ambiel
- Institute of Medical Virology, National Reference Center for Retroviruses, University of Frankfurt, 60596 Frankfurt am Main, Germany
| | - Katharina Pahnke
- Organic Chemistry, Department of Chemistry, Faculty of Sciences, University of Hamburg, 20146 Hamburg, Germany
| | - Maria Pino
- the AIDS Research Institute IrsiCaixa, Institut d'Investigatio en Ciencies de la Salut Germans Trias I Pujol, Universitat Autonoma de Barcelona, 08916 Barcelona, Spain
| | - Parastoo Azadi
- the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Nuria Izquierdo-Useros
- the AIDS Research Institute IrsiCaixa, Institut d'Investigatio en Ciencies de la Salut Germans Trias I Pujol, Universitat Autonoma de Barcelona, 08916 Barcelona, Spain
| | - Javier Martinez-Picado
- the AIDS Research Institute IrsiCaixa, Institut d'Investigatio en Ciencies de la Salut Germans Trias I Pujol, Universitat Autonoma de Barcelona, 08916 Barcelona, Spain,; the Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
| | - Chris Meier
- Organic Chemistry, Department of Chemistry, Faculty of Sciences, University of Hamburg, 20146 Hamburg, Germany
| | - Ronald L Schnaar
- Departments of Pharmacology and Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21218
| | - Paul R Crocker
- College of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, United Kingdom
| | - Werner Reutter
- the Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Charité Universitätsmedizin Berlin, 12200 Berlin, Germany
| | - Oliver T Keppler
- Institute of Medical Virology, National Reference Center for Retroviruses, University of Frankfurt, 60596 Frankfurt am Main, Germany,; Department of Infectious Diseases, Virology, University of Heidelberg, 69120 Heidelberg, Germany,.
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27
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Ramm R, Hartmann T, Tudorache I, Haverich A, Hilfiker A. No evidence for αGal epitope transfer from media containing FCS onto human endothelial cells in culture. Xenotransplantation 2015; 22:345-55. [PMID: 26301779 DOI: 10.1111/xen.12183] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 07/09/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Current clinical applications of cell therapies and tissue engineered (TE) constructs aim to generate non-immunogenic cells in the best-case scenario of autologous origin. As the cells are cultured, it is theoretically possible that immunoreactive molecules present in xenogenic cell culture media components, such as fetal calf serum (FCS), are transmitted in the culturing process. This problem has propelled the search for xeno-free culture media; however, in vitro culturing of many cell types, especially TE constructs which consist of several cell types, still relies to a great extent on FCS. In this study, we investigated the degree to which xenoantigens are transmitted to human endothelial cells (EC) cultured in medium containing FCS. METHODS Human EC were isolated from pulmonary artery fragments and atrial appendage tissue samples by enzymatic digestion followed by magnetic-activated cell separation (MACS) utilizing CD31 antibodies. The cells were cultured in EGM-2 medium containing 10% FCS for several passages. Griffonia Simplicifolia Lectin I - Isolectin B4 (GSL I-B4) was used to detect cell surface-bound αGal epitopes either microscopically or flow cytometrically. Antibody binding to cells exposed to human sera prepared from healthy blood donors was investigated to detect surface-located xenoantigens. An antibody-dependent cytotoxicity assay was conducted with heat-inactivated human serum supplemented with rabbit complement and analyzed by flow cytometry after staining for living and dead cells (LIVE/DEAD assay kit). In all experiments, cells cultured in EGM-2 supplemented with 10% human serum (HS) served as controls. RESULTS Human EC were isolated and cultured successfully for ≥6 passages. GSL I-B4 staining showed no difference between human EC cultured in FCS and in HS. In contrast to porcine EC which showed strong staining with GSL I-B4 and binding of preformed human serum antibodies, human EC cultured in FCS media did not bind human antibodies from high titer anti-αGal and anti-Neu5GC antibody serum. Along these lines, the antibody-dependent cytotoxicity assay showed that human EC cultures independent of FCS or HS usage were not affected, whereas about 40% of porcine EC did not survive. CONCLUSION Despite culturing cells in an environment containing xenoantigens, we were unable to demonstrate the translocation of xenogenic epitopes onto the surface of human EC or find an increased sensitivity in preformed human xenoantibody-dependent complement activity. Therefore, our results suggest that the use of human cells for TE or cell therapy grown in cell culture systems complemented with FCS does not necessarily lead to an acute rejection reaction upon implantation.
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Affiliation(s)
- Robert Ramm
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Thorsten Hartmann
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Igor Tudorache
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Axel Haverich
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Andres Hilfiker
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
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Badr HA, AlSadek DMM, Mathew MP, Li CZ, Djansugurova LB, Yarema KJ, Ahmed H. Nutrient-deprived cancer cells preferentially use sialic acid to maintain cell surface glycosylation. Biomaterials 2015; 70:23-36. [PMID: 26295436 DOI: 10.1016/j.biomaterials.2015.08.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 08/07/2015] [Accepted: 08/08/2015] [Indexed: 01/23/2023]
Abstract
Cancer is characterized by abnormal energy metabolism shaped by nutrient deprivation that malignant cells experience during various stages of tumor development. This study investigated the response of nutrient-deprived cancer cells and their non-malignant counterparts to sialic acid supplementation and found that cells utilize negligible amounts of this sugar for energy. Instead cells use sialic acid to maintain cell surface glycosylation through complementary mechanisms. First, levels of key metabolites (e.g., UDP-GlcNAc and CMP-Neu5Ac) required for glycan biosynthesis are maintained or enhanced upon Neu5Ac supplementation. In concert, sialyltransferase expression increased at both the mRNA and protein levels, which facilitated increased sialylation in biochemical assays that measure sialyltransferase activity as well as at the whole cell level. In the course of these experiments, several important differences emerged that differentiated the cancer cells from their normal counterparts including resistant to sialic acid-mediated energy depletion, consistently more robust sialic acid-mediated glycan display, and distinctive cell surface vs. internal vesicle display of newly-produced sialoglycans. Finally, the impact of sialic acid supplementation on specific markers implicated in cancer progression was demonstrated by measuring levels of expression and sialylation of EGFR1 and MUC1 as well as the corresponding function of sialic acid-supplemented cells in migration assays. These findings both provide fundamental insight into the biological basis of sialic acid supplementation of nutrient-deprived cancer cells and open the door to the development of diagnostic and prognostic tools.
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Affiliation(s)
- Haitham A Badr
- Department of Biochemistry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Dina M M AlSadek
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Mohit P Mathew
- Department of Biomedical Engineering and Translational Tissue Engineering Center, The Johns Hopkins University, 400 North Broadway Street, Baltimore, MD 21231, USA
| | - Chen-Zhong Li
- Department of Biomedical Engineering, Florida International University, 10555 West Flagler Street, Miami, FL 33174, USA
| | - Leyla B Djansugurova
- Institute of General Genetics and Cytology, Al-Farabi Ave, 93, Almaty 050060, Kazakhstan
| | - Kevin J Yarema
- Department of Biomedical Engineering and Translational Tissue Engineering Center, The Johns Hopkins University, 400 North Broadway Street, Baltimore, MD 21231, USA.
| | - Hafiz Ahmed
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine and Institute of Marine and Environmental Technology, 701 East Pratt Street, Baltimore, MD 21202, USA.
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29
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Bao L, Ding L, Yang M, Ju H. Noninvasive imaging of sialyltransferase activity in living cells by chemoselective recognition. Sci Rep 2015; 5:10947. [PMID: 26046317 PMCID: PMC4456940 DOI: 10.1038/srep10947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 05/11/2015] [Indexed: 12/28/2022] Open
Abstract
To elucidate the biological and pathological functions of sialyltransferases (STs), intracellular ST activity evaluation is necessary. Focusing on the lack of noninvasive methods for obtaining the dynamic activity information, this work designs a sensing platform for in situ FRET imaging of intracellular ST activity and tracing of sialylation process. The system uses tetramethylrhodamine isothiocyanate labeled asialofetuin (TRITC-AF) as a ST substrate and fluorescein isothiocyanate labeled 3-aminophenylboronic acid (FITC-APBA) as the chemoselective recognition probe of sialylation product, both of which are encapsulated in a liposome vesicle for cellular delivery. The recognition of FITC-APBA to sialylated TRITC-AF leads to the FRET signal that is analyzed by FRET efficiency images. This strategy has been used to evaluate the correlation of ST activity with malignancy and cell surface sialylation, and the sialylation inhibition activity of inhibitors. This work provides a powerful noninvasive tool for glycan biosynthesis mechanism research, cancer diagnostics and drug development.
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Affiliation(s)
- Lei Bao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Lin Ding
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Min Yang
- Department of Pharmaceutical &Biological Chemistry, UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
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30
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Wu X, Yu M, Lin B, Xing H, Han J, Han S. A sialic acid-targeted near-infrared theranostic for signal activation based intraoperative tumor ablation. Chem Sci 2015; 6:798-803. [PMID: 28706639 PMCID: PMC5494541 DOI: 10.1039/c4sc02248c] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/19/2014] [Indexed: 12/22/2022] Open
Abstract
Agents enabling tumor staging are valuable for cancer surgery. Herein, a targetable sialic acid-armed near-infrared profluorophore (SA-pNIR) is reported for fluorescence guided tumor detection. SA-pNIR consists of a sialic acid entity effective for in vivo tumor targeting and a profluorophore which undergoes lysosomal acidity-triggered fluorogenic isomerization. SA-pNIR displays a number of advantageous biomedical properties in mice, e.g. high tumor-to-normal tissue signal contrast, long-term retention in tumors and low systemic toxicity. In addition, SA-pNIR effectively converts NIR light into cytotoxic heat in cells, suggesting tumor-activatable photothermal therapy. With high performance tumor illumination and lysosome-activatable photothermal properties, SA-pNIR is a promising agent for detection and photothermal ablation of surgically exposed tumors.
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Affiliation(s)
- Xuanjun Wu
- Department of Chemical Biology , College of Chemistry and Chemical Engineering , the Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation , and Innovation Center for Cell Biology , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Mingzhu Yu
- Department of Chemical Biology , College of Chemistry and Chemical Engineering , the Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation , and Innovation Center for Cell Biology , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Bijuan Lin
- Department of Chemical Biology , College of Chemistry and Chemical Engineering , the Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation , and Innovation Center for Cell Biology , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Hongjie Xing
- Department of Chemical Biology , College of Chemistry and Chemical Engineering , the Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation , and Innovation Center for Cell Biology , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
| | - Jiahuai Han
- State Key Laboratory of Cellular Stress Biology , Innovation Center for Cell Biology , School of Life Sciences , Xiamen University , Xiamen , 361005 , China
| | - Shoufa Han
- Department of Chemical Biology , College of Chemistry and Chemical Engineering , the Key Laboratory for Chemical Biology of Fujian Province , The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation , and Innovation Center for Cell Biology , Xiamen University , Xiamen , 361005 , China . ; Tel: +86-0592-2181728
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31
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Wratil PR, Rigol S, Solecka B, Kohla G, Kannicht C, Reutter W, Giannis A, Nguyen LD. A novel approach to decrease sialic acid expression in cells by a C-3-modified N-acetylmannosamine. J Biol Chem 2014; 289:32056-32063. [PMID: 25278018 DOI: 10.1074/jbc.m114.608398] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Due to its position at the outermost of glycans, sialic acid is involved in a myriad of physiological and pathophysiological cell functions such as host-pathogen interactions, immune regulation, and tumor evasion. Inhibitors of cell surface sialylation could be a useful tool in cancer, immune, antibiotic, or antiviral therapy. In this work, four different C-3 modified N-acetylmannosamine analogs were tested as potential inhibitors of cell surface sialylation. Peracetylated 2-acetylamino-2-deoxy-3-O-methyl-D-mannose decreases cell surface sialylation in Jurkat cells in a dose-dependent manner up to 80%, quantified by flow cytometry and enzyme-linked lectin assays. High-performance liquid chromatography experiments revealed that not only the concentration of membrane bound but also of cytosolic sialic acid is reduced in treated cells. We have strong evidence that the observed reduction of sialic acid expression in cells is caused by the inhibition of the bifunctional enzyme UDP-GlcNAc-2-epimerase/ManNAc kinase. 2-Acetylamino-2-deoxy-3-O-methyl-D-mannose inhibits the human ManNAc kinase domain of the UDP-GlcNAc-2-epimerase/ManNAc kinase. Binding kinetics of the inhibitor and human N-acetylmannosamine kinase were evaluated using surface plasmon resonance. Specificity studies with human N-acetylglucosamine kinase and hexokinase IV indicated a high specificity of 2-acetylamino-2-deoxy-3-O-methyl-D-mannose for MNK. This substance represents a novel class of inhibitors of sialic acid expression in cells, targeting the key enzyme of sialic acid de novo biosynthesis.
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Affiliation(s)
- Paul R Wratil
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem
| | - Stephan Rigol
- Institut für Organische Chemie, Universität Leipzig, Fakultät für Chemie und Mineralogie, Johannisallee 29, D-04103 Leipzig, and
| | - Barbara Solecka
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Guido Kohla
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Christoph Kannicht
- Octapharma R&D, Molecular Biochemistry Berlin, Walther-Nernst-Strasse 3, D-12489 Berlin, Germany
| | - Werner Reutter
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem
| | - Athanassios Giannis
- Institut für Organische Chemie, Universität Leipzig, Fakultät für Chemie und Mineralogie, Johannisallee 29, D-04103 Leipzig, and.
| | - Long D Nguyen
- Institut für Laboratoriumsmedizin, Klinische Chemie, und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Arnimallee 22, D-14195 Berlin-Dahlem,.
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Wu X, Tian Y, Yu M, Lin B, Han J, Han S. A fluorescently labelled sialic acid for high performance intraoperative tumor detection. Biomater Sci 2014; 2:1120-1127. [PMID: 32482007 DOI: 10.1039/c4bm00028e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surgical resection is widely used for tumor treatment, necessitating approaches for the precise locating of elusive tumor foci. We report the high performance detection of tumors in mice with fluorescein-isothiocyanate (FITC) labelled sialic acid (FITC-SA), a fluorescent monosaccharide with low cytoxicity. Analysis of mice intravenously injected with FITC-SA revealed high target-to-background fluorescence ratios in subcutaneous tumors and liver tumor implants with 0.2-5 mm diameters, which are significantly below the clinical threshold of minimal residual cancer (∼1 cm clearance). Extracellular FITC-SA is quickly cleared from circulation whereas the intracellular FITC-SA could be metabolically incorporated into glycoproteins via a cellular sialylation pathway. Compared with FITC-SA-laden nanoparticles, free FITC-SA is preferentially and quickly taken up by tumors in mice and displays high tumor-to-background signal contrast, suggesting the potential for fluorescence directed surgical ablation of tumors.
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Affiliation(s)
- Xuanjun Wu
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, The Key Laboratory for Chemical Biology of Fujian Province, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, and Innovation Center for Cell Biology, Xiamen University, Xiamen, 361005, China.
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Prognostic Role of 14F7 Mab Immunoreactivity against N-Glycolyl GM3 Ganglioside in Colon Cancer. JOURNAL OF ONCOLOGY 2014; 2014:482301. [PMID: 24639871 PMCID: PMC3930184 DOI: 10.1155/2014/482301] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/08/2013] [Indexed: 12/16/2022]
Abstract
Purpose. To assess the prognostic role of 14F7 Mab immunoreactivity, against N-Glycolyl GM3 ganglioside, in patients with colon cancer (CC) and to evaluate the relationship between its expression and clinicopathological features. Methods. Paraffin-embedded specimens were retrospectively collected from 50 patients with CC operated between 2004 and 2008. 14F7 Mab staining was determined by immunohistochemistry technique and its relation with survival and clinicopathologic features was evaluated. Results. The reactivity of 14F7 Mab was detected in all cases. Most cases had high level of immunostaining (70%) that showed statistical correlation with TNM stage (P = 0.025). In univariate survival analysis, level of 14F7 Mab immunoreactivity (P = 0.0078), TNM Stage (P = 0.0007) and lymphovascular invasion (0.027) were significant prognostic factors for overall survival. Among these variables, level of 14F7 Mab immunoreactivity (HR = 0.268; 95% CI 0.078–0.920; P = 0.036) and TNM stage (HR = 0.249; 95% CI 0.066–0.932; P = 0.039) were independent prognostic factors on multivariate analysis. Conclusions. This study is the first approach on the prognostic significance of 14F7 Mab immunoreactivity in patients with colon adenocarcinoma and this assessment might be used in the prognostic estimate of CC, although further studies will be required to validate these findings.
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Fibach E, Rachmilewitz EA. Does erythropoietin have a role in the treatment of β-hemoglobinopathies? Hematol Oncol Clin North Am 2014; 28:249-63. [PMID: 24589265 DOI: 10.1016/j.hoc.2013.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review presents the indications and contraindications (pros and cons) for the potential use of erythropoietin (Epo) as a treatment in β-thalassemia and sickle cell anemia (SCA). Its high cost and route of administration (by injection) are obvious obstacles, especially in underdeveloped countries, where thalassemia is prevalent. We believe that from the data summarized in this review, the time has come to define, by studying in vitro and in vivo models, as well as by controlled clinical trials, the rationale for treating patients with various forms of thalassemia and SCA with Epo alone or in combination with other medications.
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Affiliation(s)
- Eitan Fibach
- Department of Hematology, Hadassah-Hebrew University Medical Center, Ein-Kerem, Jerusalem 91120, Israel.
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Pawluczyk IZA, Ghaderi Najafabadi M, Patel S, Desai P, Vashi D, Saleem MA, Topham PS. Sialic acid attenuates puromycin aminonucleoside-induced desialylation and oxidative stress in human podocytes. Exp Cell Res 2013; 320:258-68. [PMID: 24200502 DOI: 10.1016/j.yexcr.2013.10.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 10/07/2013] [Accepted: 10/27/2013] [Indexed: 01/26/2023]
Abstract
Sialoglycoproteins make a significant contribution to the negative charge of the glomerular anionic glycocalyx-crucial for efficient functioning of the glomerular permselective barrier. Defects in sialylation have serious consequences on podocyte function leading to the development of proteinuria. The aim of the current study was to investigate potential mechanisms underlying puromycin aminonucleosisde (PAN)-induced desialylation and to ascertain whether they could be corrected by administration of free sialic acid. PAN treatment of podocytes resulted in a loss of sialic acid from podocyte proteins. This was accompanied by a reduction, in the expression of sialyltransferases and a decrease in the key enzyme of sialic acid biosynthesis N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE). PAN treatment also attenuated expression of the antioxidant enzyme superoxide dismutase (mSOD) and concomitantly increased the generation of superoxide anions. Sialic acid supplementation rescued podocyte protein sialylation and partially restored expression of sialyltransferases. Sialic acid also restored mSOD mRNA expression and quenched the oxidative burst. These data suggest that PAN-induced aberrant sialylation occurs as a result of modulation of enzymes involved sialic acid metabolism some of which are affected by oxidative stress. These data suggest that sialic acid therapy not only reinstates functionally important negative charge but also acts a source of antioxidant activity.
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Affiliation(s)
- Izabella Z A Pawluczyk
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK; John Walls Renal Unit, Leicester General Hospital, Leicester, UK.
| | - Maryam Ghaderi Najafabadi
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK
| | - Samita Patel
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK; John Walls Renal Unit, Leicester General Hospital, Leicester, UK
| | - Priyanka Desai
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK
| | - Dipti Vashi
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK
| | - Moin A Saleem
- Academic and Children's Renal Unit, University of Bristol, Southmead Hospital, Bristol, UK
| | - Peter S Topham
- Department of Infection, Immunity and Inflammation, University of Leicester, Maurice Shock Building, University Road, Leicester, LE1 9HN, UK; John Walls Renal Unit, Leicester General Hospital, Leicester, UK
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Wu W, Dong YW, Shi PC, Yu M, Fu D, Zhang CY, Cai QQ, Zhao QL, Peng M, Wu LH, Wu XZ. Regulation of integrin αV subunit expression by sulfatide in hepatocellular carcinoma cells. J Lipid Res 2013; 54:936-52. [PMID: 23345412 DOI: 10.1194/jlr.m031450] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Integrin is important in migration and metastasis of tumor cells. Changes of integrin expression and distribution will cause an alteration of cellular adhesion and migration behaviors. In this study, we investigated sulfatide regulation of the integrin αV subunit expression in hepatoma cells and observed that either exogenous or endogenous sulfatide elicited a robust upregulation of integrin αV subunit mRNA and protein expression in hepatoma cells. This regulatory effect occurred with a corresponding phosphorylation (T739) of the transcription factor Sp1. Based on the electrophoretic mobility shift assay, sulfatide enhanced the integrin αV promoter activity and strengthened the Sp1 complex super-shift. The results of chromatin immunoprecipitation analysis also indicated that sulfatide enhanced Sp1 binding to the integrin αV promoter in vivo. Silence of Sp1 diminished the stimulation of integrin αV expression by sulfatide. In the early stage of sulfatide stimulation, phosphorylation of Erk as well as c-Src was noted, and inhibition of Erk activation with either U0126 or PD98059 significantly suppressed Sp1 phosphorylation and integrin αV expression. We demonstrated that sulfatide regulated integrin αV expression and cell adhesion, which was associated with Erk activation.
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Affiliation(s)
- Wei Wu
- Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, Key Lab of Glycoconjugate Research, Ministry of Public Health, Shanghai 200032, People's Republic of China
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Tissue Reactivity of the 14F7 Mab Raised against N-Glycolyl GM3 Ganglioside in Tumors of Neuroectodermal, Mesodermal, and Epithelial Origin. J Biomark 2013; 2013:602417. [PMID: 26317019 PMCID: PMC4437369 DOI: 10.1155/2013/602417] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 12/20/2012] [Indexed: 11/17/2022] Open
Abstract
The expression of N-glycolylneuraminic acid forming the structure of gangliosides and/or other glycoconjugates (Hanganutziu-Deicher antigen) in human has been considered as a tumor-associated antigen. Specifically, some reports of 14F7 Mab (a highly specific Mab raised against N-glycolyl GM3 ganglioside) reactivity in human tumors have been recently published. Nevertheless, tumors of epithelial origin have been mostly evaluated. The goal of the present paper was to evaluate the immunohistochemical recognition of 14F7 Mab in different human tumors of neuroectodermal, mesodermal, and epithelial origins using an immunoperoxidase staining method. Samples of fetal, normal, and reactive astrocytosis of the brain were also included in the study. In general, nontumoral tissues, as well as, low-grade brain tumors showed no or a limited immunoreaction with 14F7 Mab. Nevertheless, high-grade astrocytomas (III-IV) and neuroblastomas, as well as, sarcomas and thyroid carcinomas were mostly reactive with 14F7. No reaction was evidenced in medulloblastomas and ependymoblastomas. Our data suggest that the expression of N-glycolyl GM3 ganglioside could be related to the aggressive behavior of malignant cells, without depending on the tumor origin. Our data could also support the possible use of N-glycolyl GM3 as a target for both active and passive immunotherapies of malignancies expressing this molecule.
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Zhang Y, Yuan J, Song J, Wang Z, Huang L. An efficient method for selectively imaging and quantifying in situ the expression of sialylated glycoproteins on living cells. Glycobiology 2012; 23:643-53. [PMID: 23172875 DOI: 10.1093/glycob/cws148] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A simple and efficient method for selectively imaging and monitoring in situ the expression of sialylated glycoproteins on living cells has been developed. Treating living cells by mild periodate oxidation to selectively generate aldehydes on sialylated glycoproteins, followed by direct labeling of aldehydes with a commercially available fluorescent tag, fluorescein-5-thiosemicarbazide (FTSC), allows in situ imaging and quantification of sialylated glycoproteins on living cells. Under optimum reaction conditions, the periodate oxidation-based FTSC ligation (PF) strategy could be completed within 40 min. The cells undergoing the PF assay revealed a 91% viability and a fairly high-level of metabolic activity. Compared with current labeling methods, the PF assay proved to be a simpler and faster means of imaging sialylated glycoproteins on living cells. The PF assay has been successfully applied to imaging the location and quantification of the abundance of sialylated glycoproteins on tumor and normal cells. Our results demonstrated the methodological significance in clinical diagnosis and functional elucidation studies.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Sciences, Northwest University, 229 Northern Taibai Road, Xi'an 710069, PR China
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Ramya TNC, Weerapana E, Cravatt BF, Paulson JC. Glycoproteomics enabled by tagging sialic acid- or galactose-terminated glycans. Glycobiology 2012; 23:211-21. [PMID: 23070960 DOI: 10.1093/glycob/cws144] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
In this paper, we present two complementary strategies for enrichment of glycoproteins on living cells that combine the desirable attributes of "robust enrichment" afforded by covalent-labeling techniques and "specificity for glycoproteins" typically provided by lectin or antibody affinity reagents. Our strategy involves the selective introduction of aldehydes either into sialic acids by periodate oxidation (periodate oxidation and aniline-catalyzed oxime ligation (PAL)) or into terminal galactose and N-acetylgalactosamine residues by galactose oxidase (galactose oxidase and aniline-catalyzed oxime ligation (GAL)), followed by aniline-catalyzed oxime ligation with aminooxy-biotin to biotinylate the glycans of glycoprotein subpopulations with high efficiency and cell viability. As expected, the two methods exhibit reciprocal tagging efficiencies when applied to fully sialylated cells compared with sialic acid-deficient cells. To assess the utility of these labeling methods for glycoproteomics, we enriched the PAL- and GAL-labeled (biotinylated) glycoproteome by adsorption onto immobilized streptavidin. Glycoprotein identities (IDs) and N-glycosylation site information were then obtained by liquid chromatography-tandem mass spectrometry on total tryptic peptides and on peptides subsequently released from N-glycans still bound to the beads using peptide N-glycosidase F. A total of 175 unique N-glycosylation sites were identified, belonging to 108 nonredundant glycoproteins. Of the 108 glycoproteins, 48 were identified by both methods of labeling and the remainder was identified using PAL on sialylated cells (40) or GAL on sialic acid-deficient cells (20). Our results demonstrate that PAL and GAL can be employed as complementary methods of chemical tagging for targeted proteomics of glycoprotein subpopulations and identification of glycosylation sites of proteins on cells with an altered sialylation status.
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Affiliation(s)
- T N C Ramya
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA
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40
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Rillahan CD, Antonopoulos A, Lefort CT, Sonon R, Azadi P, Ley K, Dell A, Haslam SM, Paulson JC. Global metabolic inhibitors of sialyl- and fucosyltransferases remodel the glycome. Nat Chem Biol 2012; 8:661-8. [PMID: 22683610 PMCID: PMC3427410 DOI: 10.1038/nchembio.999] [Citation(s) in RCA: 325] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 05/05/2012] [Indexed: 12/23/2022]
Abstract
Despite the fundamental roles of sialyl- and fucosyltransferases in mammalian physiology, there are few pharmacological tools to manipulate their function in a cellular setting. Although fluorinated analogs of the donor substrates are well-established transition state inhibitors of these enzymes, they are not membrane permeable. By exploiting promiscuous monosaccharide salvage pathways, we show that fluorinated analogs of sialic acid and fucose can be taken up and metabolized to the desired donor substrate-based inhibitors inside the cell. Because of the existence of metabolic feedback loops, they also act to prevent the de novo synthesis of the natural substrates, resulting in a global, family-wide shutdown of sialyl- and/or fucosyltransferases and remodeling of cell-surface glycans. As an example of the functional consequences, the inhibitors substantially reduce expression of the sialylated and fucosylated ligand sialyl Lewis X on myeloid cells, resulting in loss of selectin binding and impaired leukocyte rolling.
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Affiliation(s)
- Cory D. Rillahan
- Department of Chemical Physiology The Scripps Research Institute La Jolla, CA 92037 (USA)
| | - Aristotelis Antonopoulos
- Division of Molecular Biosciences Faculty of Natural Sciences mperial College London, London SW7 2AZ (UK)
| | - Craig T. Lefort
- La Jolla Institute for Allergy and Immunology Division of Inflammation Biology La Jolla, CA 92037 (USA)
| | - Roberto Sonon
- Complex Carbohydrate Research Center The University of Georgia Athens, GA 30602 (USA)
| | - Parastoo Azadi
- Complex Carbohydrate Research Center The University of Georgia Athens, GA 30602 (USA)
| | - Klaus Ley
- La Jolla Institute for Allergy and Immunology Division of Inflammation Biology La Jolla, CA 92037 (USA)
| | - Anne Dell
- Division of Molecular Biosciences Faculty of Natural Sciences mperial College London, London SW7 2AZ (UK)
| | - Stuart M. Haslam
- Division of Molecular Biosciences Faculty of Natural Sciences mperial College London, London SW7 2AZ (UK)
| | - James C. Paulson
- Department of Chemical Physiology The Scripps Research Institute La Jolla, CA 92037 (USA)
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Ghaderi D, Zhang M, Hurtado-Ziola N, Varki A. Production platforms for biotherapeutic glycoproteins. Occurrence, impact, and challenges of non-human sialylation. Biotechnol Genet Eng Rev 2012; 28:147-75. [DOI: 10.5661/bger-28-147] [Citation(s) in RCA: 241] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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42
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Abstract
Sialic acids, also known as neuraminic acids, are a family of negatively charged α-keto acids with a nine-carbon backbone. These unique sugars have been found at the termini of many glycan chains of vertebrate cell surface, which play pivotal roles in mediating or modulating a variety of physiological and pathological processes. This brief review covers general approaches for synthesizing sialic acid containing structures. Recently developed synthetic methods along with structural diversities and biological functions of sialic acid are discussed.
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Affiliation(s)
- Hongzhi Cao
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250012, P. R. China
| | - Xi Chen
- Department of Chemistry, University of California-Davis, One Shields Avenue, CA 95616, USA
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Blanco R, Cedeño M, Escobar X, Blanco D, Rengifo CE, Frómeta M, Alvarez RI, Rengifo E, Carr A. Immunorecognition of the 14F7 Mab Raised against N-Glycolyl GM3 Ganglioside in Some Normal and Malignant Tissues from Genitourinary System. ACTA ACUST UNITED AC 2011. [DOI: 10.5402/2011/953803] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
N-glycolyl neuraminic acid has been considered as a tumour-associated antigen forming both glycolipid and glycoprotein, expressed in some human malignant cells. In this work, we evaluate the 14F7 Mab (an IgG1 murine highly specific to N-glycolyl GM3 ganglioside) reactivity in a variety of genitourinary-system-derived tumors as well as in their normal counterparts. Immunohistochemical assays with 14F7 followed by anti-mouse biotinylated antibody and ABC/HRP system using formalin-fixed and paraffin-embedded tissues were carried out. In normal tissues, 14F7 was reactive only in renal tubules of kidney (2/6) and in the stromal component and blood vessels of ovary (3/5). Tumors of kidney (12/38), urinary bladder (8/9), breast (41/42), ovary (21/34), testis (4/5), prostate (17/20), and uterus (5/14) as well as prostatic nodular hyperplasia (5/8) were stained with 14F7. N-glycolyl GM3 recognized by 14F7 could be considered as one attractive target for both active and passive immunotherapy of genitourinary malignancies expressing this molecule.
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Affiliation(s)
- Rancés Blanco
- Department of Quality Control, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa, P.O. Box 16040, 11600 Havana, Cuba
| | - Mercedes Cedeño
- Department of Quality Control, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa, P.O. Box 16040, 11600 Havana, Cuba
| | - Xiomara Escobar
- Department of Cell Biology and Tissues Banking, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, Plaza de la Revolución, 10400 Havana, Cuba
| | - Damián Blanco
- Department of Cell Biology and Tissues Banking, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, Plaza de la Revolución, 10400 Havana, Cuba
| | - Charles E. Rengifo
- Department of Pathology, Manuel Fajardo General Hospital, Zapata and D Street Vedado, Plaza de la Revolución, 10400 Havana, Cuba
| | - Milagros Frómeta
- Department of Quality Control, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa, P.O. Box 16040, 11600 Havana, Cuba
| | - Rosa Irene Alvarez
- Department of Cell Biology and Tissues Banking, National Institute of Oncology and Radiobiology, 29 and F Street Vedado, Plaza de la Revolución, 10400 Havana, Cuba
| | - Enrique Rengifo
- Department of Quality Control, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa, P.O. Box 16040, 11600 Havana, Cuba
| | - Adriana Carr
- Research and Development Direction, Center of Molecular Immunology, 216 Street and 15 Avenue Atabey, Playa. P.O. Box 16040, 11600 Havana, Cuba
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Malicdan MCV, Noguchi S, Nishino I. A preclinical trial of sialic acid metabolites on distal myopathy with rimmed vacuoles/hereditary inclusion body myopathy, a sugar-deficient myopathy: a review. Ther Adv Neurol Disord 2011; 3:127-35. [PMID: 21179605 DOI: 10.1177/1756285609359546] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Distal myopathy with rimmed vacuoles (DMRV), also called hereditary inclusion body myopathy (hIBM), is a moderately progressive hereditary muscle disorder affecting young adults. DMRV/hIBM is characterized clinically by muscle atrophy and weakness initially involving the distal muscles, and pathologically by the presence of small angular fibers, formation of rimmed vacuoles and deposition of various proteins in the muscle fibers. This disease is known to be caused by mutations in the UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase gene, which encodes the essential enzyme in sialic acid biosynthesis, leading to a reduction of sialic acid levels in the serum and skeletal muscles of affected patients. As it is a metabolic disease, metabolite supplementation is theoretically one of the therapeutic options. In this review, recent animal models for DMRV/hIBM are briefly characterized followed by a focus on the administration of sialic acid metabolites as a reliable therapeutic option to DMRV/hIBM with the following points highlighted: the property of compounds, the pharmacokinetic metabolism in vivo, and the therapeutic effects on the DMRV/hIBM mouse model.
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Affiliation(s)
- May Christine V Malicdan
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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Amer J, Dana M, Fibach E. The antioxidant effect of erythropoietin on thalassemic blood cells. Anemia 2010; 2010:978710. [PMID: 21490911 PMCID: PMC3065733 DOI: 10.1155/2010/978710] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 11/14/2010] [Indexed: 01/18/2023] Open
Abstract
Because of its stimulating effect on RBC production, erythropoietin (Epo) is used to treat anemia, for example, in patients on dialysis or on chemotherapy. In β-thalassemia, where Epo levels are low relative to the degree of anemia, Epo treatment improves the anemia state. Since RBC and platelets of these patients are under oxidative stress, which may be involved in anemia and thromboembolic complications, we investigated Epo as an antioxidant. Using flow-cytometry technology, we found that in vitro treatment with Epo of blood cells from these patients increased their glutathione content and reduced their reactive oxygen species, membrane lipid peroxides, and external phosphatidylserine. This resulted in reduced susceptibility of RBC to undergo hemolysis and phagocytosis. Injection of Epo into heterozygous (Hbb(th3/+)) β-thalassemic mice reduced the oxidative markers within 3 hours. Our results suggest that, in addition to stimulating RBC and fetal hemoglobin production, Epo might alleviate symptoms of hemolytic anemias as an antioxidant.
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Affiliation(s)
- Johnny Amer
- Department of Hematology, Hadassah-Hebrew University Medical Center, Ein-Kerem, 91120 Jerusalem, Israel
| | - Mutaz Dana
- Department of Hematology, Hadassah-Hebrew University Medical Center, Ein-Kerem, 91120 Jerusalem, Israel
| | - Eitan Fibach
- Department of Hematology, Hadassah-Hebrew University Medical Center, Ein-Kerem, 91120 Jerusalem, Israel
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Ganglioside GM3 levels are altered in a mouse model of HIBM: GM3 as a cellular marker of the disease. PLoS One 2010; 5:e10055. [PMID: 20383336 PMCID: PMC2850932 DOI: 10.1371/journal.pone.0010055] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Accepted: 03/04/2010] [Indexed: 12/18/2022] Open
Abstract
Objective HIBM (Hereditary Inclusion Body Myopathy) is a recessive hereditary disease characterized by adult-onset, slowly progressive muscle weakness sparing the quadriceps. It is caused by a single missense mutation of each allele of the UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE) gene, a bifunctional enzyme catalyzing the first two steps of sialic acid synthesis in mammals. However, the mechanisms and cellular pathways affected by the GNE mutation and causing the muscle weakness could not be identified so far. Based on recent evidence in literature, we investigated a new hypothesis, i.e. the involvement in the disease of the GM3 ganglioside, a specific glycolipid implicated in muscle cell proliferation and differentiation. Methods qRT-PCR analysis of St3gal5 (GM3 synthase) gene expression and HPLC quantification of GM3 ganglioside were conducted on muscle tissue from a mouse model of HIBM harboring the M712T mutation of GNE (GneM712T/M712T mouse) vs control mice (Gne+/+ mouse). Results St3gal5 mRNA levels were significantly lower in GneM712T/M712T mouse muscles vs Gne+/+ mouse muscles (64.41%±10% of Gne+/+ levels). GM3 ganglioside levels showed also a significant decrease in GneM712T/M712T mouse muscle compared to Gne+/+ mouse muscle (18.09%±5.33% of Gne+/+ levels). Although these GneM712T/M712T mice were described to suffer severe glomerular proteinuria, no GM3 alterations were noted in kidneys, highlighting a tissue specific alteration of gangliosides. Conclusion The M712T mutation of GNE hampers the muscle ability to synthesize normal levels of GM3. This is the first time that a mutation of GNE can be related to the molecular pathological mechanism of HIBM.
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Homann A, Qamar RU, Serim S, Dersch P, Seibel J. Bioorthogonal metabolic glycoengineering of human larynx carcinoma (HEp-2) cells targeting sialic acid. Beilstein J Org Chem 2010; 6:24. [PMID: 20502611 PMCID: PMC2874417 DOI: 10.3762/bjoc.6.24] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 02/17/2010] [Indexed: 01/14/2023] Open
Abstract
Sialic acids are located at the termini of mammalian cell-surface glycostructures, which participate in essential interaction processes including adhesion of pathogens prior to infection and immunogenicity. Here we present the synthesis and bioorthogonal metabolic incorporation of the sialic acid analogue N-(1-oxohex-5-ynyl)neuraminic acid (Neu5Hex) into the cell-surface glycocalyx of a human larynx carcinoma cell line (HEp-2) and its fluorescence labelling by click chemistry.
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Affiliation(s)
- Arne Homann
- University of Würzburg, Department of Organic Chemistry, Am Hubland, 97074 Würzburg, Germany
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48
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Ramya TNC, Weerapana E, Liao L, Zeng Y, Tateno H, Liao L, Yates JR, Cravatt BF, Paulson JC. In situ trans ligands of CD22 identified by glycan-protein photocross-linking-enabled proteomics. Mol Cell Proteomics 2010; 9:1339-51. [PMID: 20172905 DOI: 10.1074/mcp.m900461-mcp200] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
CD22, a regulator of B-cell signaling, is a siglec that recognizes the sequence NeuAcalpha2-6Gal on glycoprotein glycans as ligands. CD22 interactions with glycoproteins on the same cell (in cis) and apposing cells (in trans) modulate its activity in B-cell receptor signaling. Although CD22 predominantly recognizes neighboring CD22 molecules as cis ligands on B-cells, little is known about the trans ligands on apposing cells. We conducted a proteomics scale study to identify candidate trans ligands of CD22 on B-cells by UV photocross-linking CD22-Fc chimera bound to B-cell glycoproteins engineered to carry sialic acids with a 9-aryl azide moiety. Using mass spectrometry-based quantitative proteomics to analyze the cross-linked products, 27 glycoproteins were identified as candidate trans ligands. Next, CD22 expressed on the surface of one cell was photocross-linked to glycoproteins on apposing B-cells followed by immunochemical analysis of the products with antibodies to the candidate ligands. Of the many candidate ligands, only the B-cell receptor IgM was found to be a major in situ trans ligand of CD22 that is selectively redistributed to the site of cell contact upon interaction with CD22 on the apposing cell.
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Affiliation(s)
- T N C Ramya
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California 92037, USA
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Gabri MR, Otero LL, Gomez DE, Alonso DF. Exogenous incorporation of neugc-rich mucin augments n-glycolyl sialic acid content and promotes malignant phenotype in mouse tumor cell lines. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2009; 28:146. [PMID: 19951433 PMCID: PMC2795750 DOI: 10.1186/1756-9966-28-146] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2009] [Accepted: 12/01/2009] [Indexed: 01/17/2023]
Abstract
Background Carbohydrates embedded in the plasma membrane are one of the main actors involved in the communication of cells with the microenvironment. Neuraminic sialic acids are glycocalyx sugars that play important roles in the modulation of malignant cell behaviour. N-glycolylneuraminic acid (NeuGc) is synthesized by the cytidine monophospho-N-acetylneuraminic acid hydroxylase (CMAH), an enzyme expressed in all mammals except humans. In mice, this sugar is synthesized in several somatic tissues. Methods We used the B16 melanoma and F3II mammary carcinoma mouse tumor cell lines. By CMAH directed RT-PCR and NeuGc detection with the specific anti-NeuGc-GM3 antibody 14F7 we evaluated enzyme and ganglioside expression in tumor cells, respectively. Expression of NeuGc-GM3 ganglioside was reached by in vitro incubation with NeuGc-rich bovine submaxillary mucin and evaluated by slot-blot and immunohistochemistry assays using the 14F7 antibody. Tumor cells treated with mucin or purified NeuGc were injected s.c. and i.v. in syngeneic mice to evaluate tumor and metastatic growth. Results In the present work we demonstrated the absence of expression of CMAH enzyme in B16 melanoma and F3II mammary carcinoma cells. In vitro incubation of these NeuGc-negative cells with NeuGc-rich mucin increased the presence of NeuGc in cell membranes for at least 48-72 h, as a component of the GM3 ganglioside. Preincubation with NeuGc-rich mucin reduced tumor latency and increased the metastatic potential of tumor cells in syngeneic animals. Similar results were obtained when cells were incubated with purified NeuGc alone. Conclusion Our results indicate that B16 and F3II mouse tumor cell lines do not express NeuGc in cell membranes but they are able to incorporate NeuGc from an exogenous source, contributing to the malignant phenotype of melanoma and mammary carcinoma cells.
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Affiliation(s)
- Mariano R Gabri
- Laboratory of Molecular Oncology, Quilmes National University, (Roque Saenz Peña 352), Bernal, (B1876BXD), Argentina.
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50
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Abstract
The rapid growth of infant brains places an exceptionally high demand on the supply of nutrients from the diet, particularly for preterm infants. Sialic acid (Sia) is an essential component of brain gangliosides and the polysialic acid (polySia) chains that modify neural cell adhesion molecules (NCAM). Sia levels are high in human breast milk, predominately as N-acetylneuraminic acid (Neu5Ac). In contrast, infant formulas contain a low level of Sia consisting of both Neu5Ac and N-glycolylneuraminic acid (Neu5Gc). Neu5Gc is implicated in some human inflammatory diseases. Brain gangliosides and polysialylated NCAM play crucial roles in cell-to-cell interactions, neuronal outgrowth, modifying synaptic connectivity, and memory formation. In piglets, a diet rich in Sia increases the level of brain Sia and the expression of two learning-related genes and enhances learning and memory. The purpose of this review is to summarize the evidence showing the importance of dietary Sia as an essential nutrient for brain development and cognition.
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Affiliation(s)
- Bing Wang
- Human Nutrition Unit, School of Molecular and Microbial Biosciences, University of Sydney, Australia and School of Medicine, Xiamen University, P. R. China.
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