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Zhao Y, Tang T, Zhao W, Fu W, Li T. Inhibition of PEDV viral entry upon blocking N-glycan elaboration. Virology 2024; 594:110039. [PMID: 38492520 DOI: 10.1016/j.virol.2024.110039] [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: 12/01/2023] [Revised: 01/22/2024] [Accepted: 02/23/2024] [Indexed: 03/18/2024]
Abstract
Porcine Epidemic Diarrhea Virus (PEDV) poses a significant threat to the global swine industry, demanding a thorough understanding of its cellular invasion mechanism for effective interventions. This study meticulously investigates the impact of O- and N-linked glycans on PEDV proteins and host cell interaction, shedding light on their influence on the virus's invasion process. Utilizing CRISPR-Cas9 technology to inhibit cell surface O- and N-linked glycan synthesis demonstrated no discernible impact on virus infection. However, progeny PEDV strains lacking these glycans exhibited a minor effect of O-linked glycans on virus infection. Conversely, a notable 40% reduction in infectivity was observed when the virus surface lacked N-linked glycans, emphasizing their pivotal role in facilitating virus recognition and binding to host cells. Additionally, inhibition studies utilizing kifunensine, a natural glycosidase I inhibitor, reaffirmed the significant role of N-linked glycans in virus infection. Inhibiting N-linked glycan synthesis with kifunensine substantially decreased virus entry into cells and potentially influenced spike protein expression. Assessment of the stability and recovery potential of N-linked glycan-deficient strains underscored the critical importance of N-glycans at various stages of the virus lifecycle. In vivo experiments infecting piglets with N-glycan-deficient strains exhibited milder clinical symptoms, reduced virus excretion, and less severe pathological lesions compared to conventional strains. These findings offer promising translational applications, proposing N-glycosylation inhibitors as potential therapeutic interventions against PEDV. The utilization of these inhibitors might mitigate virus invasion and disease transmission, providing avenues for effective antiviral strategies and vaccine development. Nonetheless, further research is warranted to elucidate the precise mechanisms of N-linked glycans in PEDV infection for comprehensive clinical applications.
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Affiliation(s)
- Yong Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China, No.1, Mingxian South Road, Taigu District, Shanxi Province, 030801.
| | - Tao Tang
- Cangzhou Hospital Of Integrated TCM-WM Hebei, No.31, Huanghe Road, Cangzhou City, Hebei Province, 061013, China.
| | - Wenchang Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China, No.1, Mingxian South Road, Taigu District, Shanxi Province, 030801.
| | - Weiguang Fu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China, No.1, Mingxian South Road, Taigu District, Shanxi Province, 030801.
| | - Tao Li
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China, No.1, Mingxian South Road, Taigu District, Shanxi Province, 030801.
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2
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Amoabediny Z, Mittal A, Guin S, Buffone A. Let's Get Rolling: Precise Control of Microfluidic Assay Conditions to Recapitulate Selectin-Mediated Rolling Interactions of the Leukocyte Adhesion Cascade. Curr Protoc 2024; 4:e1022. [PMID: 38578028 PMCID: PMC11003720 DOI: 10.1002/cpz1.1022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The leukocyte adhesion cascade governs the recruitment of circulating immune cells from the vasculature to distal sites. The initial adhesive interactions between cell surface ligands displaying sialyl-LewisX (sLeX) and endothelial E- and P-selectins serve to slow the cells down enough to interact more closely with the surface, polarize, and exit into the tissues. Therefore, precise microfluidic assays are critical in modeling how well immune cells can interact and "roll" on selectins to slow down enough to complete further steps of the cascade. Here, we present a systematic protocol for selectin mediated rolling on recombinant surfaces and endothelial cell monolayers on polyacrylamide gels of varying stiffness. We also describe step-by-step the protocol for setting up and performing the experiment and how to analyze and present the data collected. This protocol serves to simplify and detail the procedure needed to investigate the initial selectin-mediated interactions of immune cells with the vasculature. © 2024 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Preparing dishes for cell rolling experiments Basic Protocol 2: Fabrication of polyacrylamide gels for cell rolling experiments Alternate Protocol 1: Protein conjugation with N6 linker Alternate Protocol 2: HUVEC culturing for monolayers Basic Protocol 3: Conducting cell rolling experiments on polyacrylamide gels Basic Protocol 4: ImageJ analysis of cell rolling movies Basic Protocol 5: Quantification of Fc site density on a surface (e.g., for Fc chimeras).
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Affiliation(s)
- Zeinab Amoabediny
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07103
| | - Aman Mittal
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07103
| | - Subham Guin
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07103
| | - Alexander Buffone
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07103
- Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ 07103
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3
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Sanji AS, J M, Gurav MJ, Batra SK, Chachadi VB. Cancer snap-shots: Biochemistry and glycopathology of O-glycans: A review. Int J Biol Macromol 2024; 260:129318. [PMID: 38232866 DOI: 10.1016/j.ijbiomac.2024.129318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/19/2024]
Abstract
Cancer pathogenesis is strongly linked to the qualitative and quantitative alteration of the cell surface glycans, that are glycosidically linked to proteins and lipids. Glycans that are covalently linked to the polypeptide backbone of a protein through nitrogen or oxygen, are known as N-glycans or O-glycans, respectively. Although the role of glycans in the expression, physiology, and communication of cells is well documented, the function of these glycans in tumor biology is not fully elucidated. In this context, current review summarizes biosynthesis, modifications and pathological implications of O-glycans The review also highlights illustrative examples of cancer types modulated by aberrant O-glycosylation. Related O-glycans like Thomsen-nouveau (Tn), Thomsen-Friedenreich (TF), Lewisa/x, Lewisb/y, sialyl Lewisa/x and some other O-glycans are discussed in detail. Since, the overexpression of O-glycans are attributed to the aggressiveness and metastatic behavior of cancer cells, the current review attempts to understand the relation between metastasis and O-glycans.
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Affiliation(s)
- Ashwini S Sanji
- P. G. Department of Studies in Biochemistry, Karnatak University, Dharwad, Karnataka 580 003, India
| | - Manasa J
- P. G. Department of Studies in Biochemistry, Karnatak University, Dharwad, Karnataka 580 003, India
| | - Maruti J Gurav
- P. G. Department of Studies in Biochemistry, Karnatak University, Dharwad, Karnataka 580 003, India
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA; Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Disease, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vishwanath B Chachadi
- P. G. Department of Studies in Biochemistry, Karnatak University, Dharwad, Karnataka 580 003, India.
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4
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Haslund-Gourley BS, Woloszczuk K, Hou J, Connors J, Cusimano G, Bell M, Taramangalam B, Fourati S, Mege N, Bernui M, Altman MC, Krammer F, van Bakel H, Maecker HT, Rouphael N, Diray-Arce J, Wigdahl B, Kutzler MA, Cairns CB, Haddad EK, Comunale MA. IgM N-glycosylation correlates with COVID-19 severity and rate of complement deposition. Nat Commun 2024; 15:404. [PMID: 38195739 PMCID: PMC10776791 DOI: 10.1038/s41467-023-44211-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 12/04/2023] [Indexed: 01/11/2024] Open
Abstract
The glycosylation of IgG plays a critical role during human severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, activating immune cells and inducing cytokine production. However, the role of IgM N-glycosylation has not been studied during human acute viral infection. The analysis of IgM N-glycosylation from healthy controls and hospitalized coronavirus disease 2019 (COVID-19) patients reveals increased high-mannose and sialylation that correlates with COVID-19 severity. These trends are confirmed within SARS-CoV-2-specific immunoglobulin N-glycan profiles. Moreover, the degree of total IgM mannosylation and sialylation correlate significantly with markers of disease severity. We link the changes of IgM N-glycosylation with the expression of Golgi glycosyltransferases. Lastly, we observe antigen-specific IgM antibody-dependent complement deposition is elevated in severe COVID-19 patients and modulated by exoglycosidase digestion. Taken together, this work links the IgM N-glycosylation with COVID-19 severity and highlights the need to understand IgM glycosylation and downstream immune function during human disease.
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Affiliation(s)
| | - Kyra Woloszczuk
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | - Jintong Hou
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | | | - Gina Cusimano
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | - Mathew Bell
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | | | | | - Nathan Mege
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | - Mariana Bernui
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | | | - Florian Krammer
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Vaccine Research and Pandemic Preparedness (C-VaRPP), Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Harm van Bakel
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Center for Vaccine Research and Pandemic Preparedness (C-VaRPP), Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | - Joann Diray-Arce
- Clinical & Data Coordinating Center (CDCC); Precision Vaccines Program, Boston Children's Hospital, Boston, MA, USA
| | - Brian Wigdahl
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA
| | | | | | - Elias K Haddad
- Drexel University/Tower Health Hospital, Philadelphia, PA, USA.
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5
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Zhu Y, Neelamegham S. Knockout studies using CD34+ hematopoietic cells suggest that CD44 is a physiological human neutrophil E-selectin ligand. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.18.553923. [PMID: 37645985 PMCID: PMC10462143 DOI: 10.1101/2023.08.18.553923] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The recruitment of peripheral blood neutrophils at sites of inflammation involves a multistep cascade, starting with E- and P-selectin expressed on the inflamed vascular endothelium binding sialofucosylated glycans on leukocytes. As the glycoconjugate biosynthesis pathways in different cells are distinct, the precise carbohydrate ligands of selectins varies both across species, and between different immune cell populations in a given species. To study this aspect in human neutrophils, we developed a protocol to perform CRISPR/Cas9 gene-editing on CD34+ hHSCs (human hematopoietic stem/progenitor cells) as they are differentiated towards neutrophil lineage. This protocol initially uses a cocktail of SCF (stem-cell factor), IL-3 (interleukin-3) and FLT-3L (FMS-like tyrosine kinase 3 ligand) to expand the stem/progenitor cells followed by directed differentiation to neutrophils using G-CSF (granulocyte colony-stimulating factor). Microfluidics based assays were performed on a confocal microscope platform to characterize the rolling phenotype of each edited cell type in mixed populations. These studies demonstrated that CD44, but not CD43, is a major E-selectin ligand on human neutrophils. The loss of function results were validated by developing sialofucosylated recombinant CD44. This glycosylated protein supported both robust E-selectin binding in a cell-free assay, and it competitively blocked neutrophil adhesion to E-selectin on inflamed endothelial cells. Together, the study establishes important methods to study human neutrophil biology and determines that sialoflucosylated-CD44 is a physiological human E-selectin ligand.
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Affiliation(s)
- Yuqi Zhu
- Department of Chemical and Biological Engineering, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY 14260
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY 14260
- Department of Biomedical Engineering, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY 14260
- Department of Medicine School of Engineering and Applies Sciences, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY 14260
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6
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Haslund-Gourley B, Woloszcuk K, Hou J, Connors J, Cusimano G, Bell M, Taramangalam B, Fourati S, Mege N, Bernui M, Altman M, Krammer F, van Bakel H, Maecker H, Wigdahl B, Cairns C, Haddad E, Comunale M. IgM N-glycosylation correlates with COVID-19 severity and rate of complement deposition. RESEARCH SQUARE 2023:rs.3.rs-2939468. [PMID: 37398192 PMCID: PMC10312960 DOI: 10.21203/rs.3.rs-2939468/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The glycosylation of IgG plays a critical role during human SARS-CoV-2, activating immune cells and inducing cytokine production. However, the role of IgM N-glycosylation has not been studied during acute viral infection in humans. In vitro evidence suggests that the glycosylation of IgM inhibits T cell proliferation and alters complement activation rates. The analysis of IgM N-glycosylation from healthy controls and hospitalized COVID-19 patients reveals that mannosylation and sialyation levels associate with COVID-19 severity. Specifically, we find increased di- and tri-sialylated glycans and altered mannose glycans in total serum IgM in severe COVID-19 patients when compared to moderate COVID-19 patients. This is in direct contrast with the decrease of sialic acid found on the serum IgG from the same cohorts. Moreover, the degree of mannosylation and sialylation correlated significantly with markers of disease severity: D-dimer, BUN, creatinine, potassium, and early anti-COVID-19 amounts of IgG, IgA, and IgM. Further, IL-16 and IL-18 cytokines showed similar trends with the amount of mannose and sialic acid present on IgM, implicating these cytokines' potential to impact glycosyltransferase expression during IgM production. When examining PBMC mRNA transcripts, we observe a decrease in the expression of Golgi mannosidases that correlates with the overall reduction in mannose processing we detect in the IgM N-glycosylation profile. Importantly, we found that IgM contains alpha-2,3 linked sialic acids in addition to the previously reported alpha-2,6 linkage. We also report that antigen-specific IgM antibody-dependent complement deposition is elevated in severe COVID-19 patients. Taken together, this work links the immunoglobulin M N-glycosylation with COVID-19 severity and highlights the need to understand the connection between IgM glycosylation and downstream immune function during human disease.
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7
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Ramos-Martínez I, Ramos-Martínez E, Cerbón M, Pérez-Torres A, Pérez-Campos Mayoral L, Hernández-Huerta MT, Martínez-Cruz M, Pérez-Santiago AD, Sánchez-Medina MA, García-Montalvo IA, Zenteno E, Matias-Cervantes CA, Ojeda-Meixueiro V, Pérez-Campos E. The Role of B Cell and T Cell Glycosylation in Systemic Lupus Erythematosus. Int J Mol Sci 2023; 24:ijms24010863. [PMID: 36614306 PMCID: PMC9820943 DOI: 10.3390/ijms24010863] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 01/05/2023] Open
Abstract
Glycosylation is a post-translational modification that affects the stability, structure, antigenicity and charge of proteins. In the immune system, glycosylation is involved in the regulation of ligand-receptor interactions, such as in B-cell and T-cell activating receptors. Alterations in glycosylation have been described in several autoimmune diseases, such as systemic lupus erythematosus (SLE), in which alterations have been found mainly in the glycosylation of B lymphocytes, T lymphocytes and immunoglobulins. In immunoglobulin G of lupus patients, a decrease in galactosylation, sialylation, and nucleotide fucose, as well as an increase in the N-acetylglucosamine bisector, are observed. These changes in glycoisolation affect the interactions of immunoglobulins with Fc receptors and are associated with pericarditis, proteinuria, nephritis, and the presence of antinuclear antibodies. In T cells, alterations have been described in the glycosylation of receptors involved in activation, such as the T cell receptor; these changes affect the affinity with their ligands and modulate the binding to endogenous lectins such as galectins. In T cells from lupus patients, a decrease in galectin 1 binding is observed, which could favor activation and reduce apoptosis. Furthermore, these alterations in glycosylation correlate with disease activity and clinical manifestations, and thus have potential use as biomarkers. In this review, we summarize findings on glycosylation alterations in SLE and how they relate to immune system defects and their clinical manifestations.
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Affiliation(s)
- Ivan Ramos-Martínez
- Departamento de Medicina y Zootecnia de Cerdos, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Edgar Ramos-Martínez
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
- Escuela de Ciencias, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca 68120, Mexico
| | - Marco Cerbón
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”—Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Armando Pérez-Torres
- Departamento de Biología Celular y Tisular, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | | | - María Teresa Hernández-Huerta
- CONACyT, Facultad de Medicina y Cirugía, Universidad Autónoma “Benito Juárez” de Oaxaca (UABJO), Oaxaca 68020, Mexico
| | | | | | | | | | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
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8
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Momeni A, Eagler L, Lo CY, Weil BR, Canty JM, Lang JK, Neelamegham S. Neutrophils aid cellular therapeutics by enhancing glycoengineered stem cell recruitment and retention at sites of inflammation. Biomaterials 2021; 276:121048. [PMID: 34343858 DOI: 10.1016/j.biomaterials.2021.121048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 10/20/2022]
Abstract
The efficacy of cell-based therapies relies on targeted payload delivery and enhanced cell retention. In vitro and in vivo studies suggest that the glycoengineering of mesenchymal and cardiosphere-derived cells (CDCs) may enhance such recruitment at sites of injury. We evaluated the role of blood cells in amplifying this recruitment. Thus, the human α(1,3)fucosyltransferase FUT7 was stably expressed in CDCs, sometimes with P-selectin glycoprotein ligand-1 (PSGL-1/CD162). Such FUT7 over-expression resulted in cell-surface sialyl Lewis-X (sLeX) expression, at levels comparable to blood neutrophils. Whereas FUT7 was sufficient for CDC recruitment on substrates bearing E-selectin under flow, PSGL-1 co-expression was necessary for P-/L-selectin binding. In both cone-plate viscometer and flow chamber studies, chemokine driven neutrophil activation promoted the adhesion of glycoengineered-CDCs to blood cells. Here, blood neutrophils activated upon contact with IL-1β stimulated endothelial cells, amplified glycoengineered-CDC recruitment. In vivo, local inflammation in a mouse ear elicited both glycoengineered-CDC and peripheral blood neutrophil homing to the inflamed site. Glycoengineering CDCs also resulted in enhanced (~16%) cell retention at 24 h in a murine myocardial infarction model, with CDCs often co-localized with blood neutrophils. Overall, peripheral blood neutrophils, activated at sites of injury, may enhance recruitment of glycoengineered cellular therapeutics via secondary capture mechanisms.
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Affiliation(s)
- Arezoo Momeni
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - Lisa Eagler
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Veterans Affairs Western New York Health Care System, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - Chi Y Lo
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - Brian R Weil
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Physiology and Biophysics, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - John M Canty
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Veterans Affairs Western New York Health Care System, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Physiology and Biophysics, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Medicine, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - Jennifer K Lang
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Veterans Affairs Western New York Health Care System, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Medicine, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Pharmacology and Toxicology, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
| | - Sriram Neelamegham
- Division of Cardiovascular Medicine and the Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA; Department of Medicine, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA.
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9
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Wang SS, Solar VD, Yu X, Antonopoulos A, Friedman AE, Agarwal K, Garg M, Ahmed SM, Addhya A, Nasirikenari M, Lau JT, Dell A, Haslam SM, Sampathkumar SG, Neelamegham S. Efficient inhibition of O-glycan biosynthesis using the hexosamine analog Ac 5GalNTGc. Cell Chem Biol 2021; 28:699-710.e5. [PMID: 33609441 DOI: 10.1016/j.chembiol.2021.01.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 12/20/2020] [Accepted: 01/21/2021] [Indexed: 11/18/2022]
Abstract
There is a critical need to develop small-molecule inhibitors of mucin-type O-linked glycosylation. The best-known reagent currently is benzyl-GalNAc, but it is effective only at millimolar concentrations. This article demonstrates that Ac5GalNTGc, a peracetylated C-2 sulfhydryl-substituted GalNAc, fulfills this unmet need. When added to cultured leukocytes, breast cells, and prostate cells, Ac5GalNTGc increased cell-surface VVA binding by ∼10-fold, indicating truncation of O-glycan biosynthesis. Cytometry, mass spectrometry, and western blot analysis of HL-60 promyelocytes demonstrated that 50-80 μM Ac5GalNTGc prevented elaboration of 30%-60% of the O-glycans beyond the Tn-antigen (GalNAcα1-Ser/Thr) stage. The effect of the compound on N-glycans and glycosphingolipids was small. Glycan inhibition induced by Ac5GalNTGc resulted in 50%-80% reduction in leukocyte sialyl-Lewis X expression and L-/P-selectin-mediated rolling under flow conditions. Ac5GalNTGc was pharmacologically active in mouse. It reduced neutrophil infiltration to sites of inflammation by ∼60%. Overall, Ac5GalNTGc may find diverse applications as a potent inhibitor of O-glycosylation.
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Affiliation(s)
- Shuen-Shiuan Wang
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY, USA
| | - Virginia Del Solar
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY, USA
| | - Xinheng Yu
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY, USA
| | | | - Alan E Friedman
- Department of Chemistry, State University of New York, Buffalo, NY, USA
| | - Kavita Agarwal
- Laboratory of Chemical Glycobiology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Monika Garg
- Laboratory of Chemical Glycobiology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Syed Meheboob Ahmed
- Laboratory of Chemical Glycobiology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Ahana Addhya
- Laboratory of Chemical Glycobiology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Mehrab Nasirikenari
- Department of Cellular and Molecular Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Joseph T Lau
- Department of Cellular and Molecular Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London, UK
| | - Stuart M Haslam
- Department of Life Sciences, Imperial College London, London, UK
| | | | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY, USA; Department of Medicine, State University of New York, Buffalo, NY, USA.
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10
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Madunić K, Zhang T, Mayboroda OA, Holst S, Stavenhagen K, Jin C, Karlsson NG, Lageveen-Kammeijer GSM, Wuhrer M. Colorectal cancer cell lines show striking diversity of their O-glycome reflecting the cellular differentiation phenotype. Cell Mol Life Sci 2021; 78:337-350. [PMID: 32236654 PMCID: PMC7867528 DOI: 10.1007/s00018-020-03504-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/05/2020] [Accepted: 03/09/2020] [Indexed: 02/07/2023]
Abstract
Alterations in protein glycosylation in colorectal cancer (CRC) have been extensively studied using cell lines as models. However, little is known about their O-glycome and the differences in glycan biosynthesis in different cell types. To provide a better understanding of the variation in O-glycosylation phenotypes and their association with other molecular features, an in-depth O-glycosylation analysis of 26 different CRC cell lines was performed. The released O-glycans were analysed on porous graphitized carbon nano-liquid chromatography system coupled to a mass spectrometer via electrospray ionization (PGC-nano-LC-ESI-MS/MS) allowing isomeric separation as well as in-depth structural characterization. Associations between the observed glycan phenotypes with previously reported cell line transcriptome signatures were examined by canonical correlation analysis. Striking differences are observed between the O-glycomes of 26 CRC cell lines. Unsupervized principal component analysis reveals a separation between well-differentiated colon-like and undifferentiated cell lines. Colon-like cell lines are characterized by a prevalence of I-branched and sialyl Lewis x/a epitope carrying glycans, while most undifferentiated cell lines show absence of Lewis epitope expression resulting in dominance of truncated α2,6-core sialylated glycans. Moreover, the expression of glycan signatures associates with the expression of glycosyltransferases that are involved in their biosynthesis, providing a deeper insight into the regulation of glycan biosynthesis in different cell types. This untargeted in-depth screening of cell line O-glycomes paves the way for future studies exploring the role of glycosylation in CRC development and drug response leading to discovery of novel targets for the development of anti-cancer antibodies.
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Affiliation(s)
- Katarina Madunić
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands
| | - Tao Zhang
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands
| | - Oleg A Mayboroda
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands
| | - Stephanie Holst
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands
| | - Kathrin Stavenhagen
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Postbus 9600, 2300 RC, Leiden, The Netherlands.
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11
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Yang Q, Hughes TA, Kelkar A, Yu X, Cheng K, Park S, Huang WC, Lovell JF, Neelamegham S. Inhibition of SARS-CoV-2 viral entry upon blocking N- and O-glycan elaboration. eLife 2020; 9:e61552. [PMID: 33103998 PMCID: PMC7685702 DOI: 10.7554/elife.61552] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/24/2020] [Indexed: 12/11/2022] Open
Abstract
The Spike protein of SARS-CoV-2, its receptor-binding domain (RBD), and its primary receptor ACE2 are extensively glycosylated. The impact of this post-translational modification on viral entry is yet unestablished. We expressed different glycoforms of the Spike-protein and ACE2 in CRISPR-Cas9 glycoengineered cells, and developed corresponding SARS-CoV-2 pseudovirus. We observed that N- and O-glycans had only minor contribution to Spike-ACE2 binding. However, these carbohydrates played a major role in regulating viral entry. Blocking N-glycan biosynthesis at the oligomannose stage using both genetic approaches and the small molecule kifunensine dramatically reduced viral entry into ACE2 expressing HEK293T cells. Blocking O-glycan elaboration also partially blocked viral entry. Mechanistic studies suggest multiple roles for glycans during viral entry. Among them, inhibition of N-glycan biosynthesis enhanced Spike-protein proteolysis. This could reduce RBD presentation on virus, lowering binding to host ACE2 and decreasing viral entry. Overall, chemical inhibitors of glycosylation may be evaluated for COVID-19.
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Affiliation(s)
- Qi Yang
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Thomas A Hughes
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Anju Kelkar
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Xinheng Yu
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Kai Cheng
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Sheldon Park
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
| | - Wei-Chiao Huang
- Biomedical Engineering, State University of New YorkBuffaloUnited States
| | - Jonathan F Lovell
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
- Biomedical Engineering, State University of New YorkBuffaloUnited States
| | - Sriram Neelamegham
- Chemical & Biological Engineering, State University of New YorkBuffaloUnited States
- Biomedical Engineering, State University of New YorkBuffaloUnited States
- Medicine, State University of New YorkBuffaloUnited States
- Clinical & Translational Research CenterBuffaloUnited States
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12
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Zhu Y, Groth T, Kelkar A, Zhou Y, Neelamegham S. A GlycoGene CRISPR-Cas9 lentiviral library to study lectin binding and human glycan biosynthesis pathways. Glycobiology 2020; 31:173-180. [PMID: 32776087 DOI: 10.1093/glycob/cwaa074] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 12/25/2022] Open
Abstract
Glycan biosynthesis on cell surface proteins and lipids is orchestrated by different classes of enzymes and proteins including the following: i. glycosyltransferases that add saccharides; ii. glycosidases that trim glycans; iii. conserved oligomeric golgi complex members that regulate intracellular transport; iv. enzymes aiding the biosynthesis of sugar-nucleotides; and v. sulfotransferases. This manuscript describes a pooled "glycoGene CRISPR" lentiviral library that targets 347 human genes involved in the above processes. Approximately 10 single-guide RNA (sgRNA) are included against each glycogene, with the putative editing site spanning the length of the target. A data analysis scheme is presented in order to determine glycosylation pathways regulating biological processes. As proof of principle, forward genetic screen results are presented to identify penetrating glycogenes that regulate the binding of P-/E-selectin, anti-sialyl Lewis-X monoclonal antibody HECA-452 and selected lectins (phaseolus vulgaris leucoagglutinin, vicia villosa lectin, peanut agglutinin) to HL-60 promyelocytic cells. Besides validating previously established biology, the study identifies three enzymes, PAPSS1, SLC35B2 and TPST2, as key molecules regulating sulfation of the major P-selectin glycoprotein ligand-1 in leukocytes. Approximately 80-90% of the sgRNA used in this study displayed high editing efficiency, and the CRISPR library picked up entire gene sets regulating specific biosynthetic pathways rather than only isolated genes. These data suggest that the glycoGene CRISPR library contains high-efficiency sgRNA. Further, this resource could be useful for the rapid screening of glycosylation-related genes and pathways that control lectin recognition in a variety of contexts.
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Affiliation(s)
- Yuqi Zhu
- Chemical and Biological Engineering, Biomedical Engineering and Medicine, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Theodore Groth
- Chemical and Biological Engineering, Biomedical Engineering and Medicine, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Anju Kelkar
- Chemical and Biological Engineering, Biomedical Engineering and Medicine, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Yusen Zhou
- Chemical and Biological Engineering, Biomedical Engineering and Medicine, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Sriram Neelamegham
- Chemical and Biological Engineering, Biomedical Engineering and Medicine, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
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13
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Buffone A, Weaver VM. Don't sugarcoat it: How glycocalyx composition influences cancer progression. J Cell Biol 2020; 219:133536. [PMID: 31874115 PMCID: PMC7039198 DOI: 10.1083/jcb.201910070] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/19/2019] [Accepted: 12/03/2019] [Indexed: 12/17/2022] Open
Abstract
Buffone and Weaver discuss how the structure of the backbones and glycans of the tumor glycocalyx governs cell–matrix interactions and directs cancer progression. Mechanical interactions between tumors and the extracellular matrix (ECM) of the surrounding tissues have profound effects on a wide variety of cellular functions. An underappreciated mediator of tumor–ECM interactions is the glycocalyx, the sugar-decorated proteins and lipids that act as a buffer between the tumor and the ECM, which in turn mediates all cell-tissue mechanics. Importantly, tumors have an increase in the density of the glycocalyx, which in turn increases the tension of the cell membrane, alters tissue mechanics, and drives a more cancerous phenotype. In this review, we describe the basic components of the glycocalyx and the glycan moieties implicated in cancer. Next, we examine the important role the glycocalyx plays in driving tension-mediated cancer cell signaling through a self-enforcing feedback loop that expands the glycocalyx and furthers cancer progression. Finally, we discuss current tools used to edit the composition of the glycocalyx and the future challenges in leveraging these tools into a novel tractable approach to treat cancer.
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Affiliation(s)
- Alexander Buffone
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA.,Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Valerie M Weaver
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA.,Departments of Radiation Oncology and Bioengineering and Therapeutic Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, and Helen Diller Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
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14
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Tvaroška I, Selvaraj C, Koča J. Selectins-The Two Dr. Jekyll and Mr. Hyde Faces of Adhesion Molecules-A Review. Molecules 2020; 25:molecules25122835. [PMID: 32575485 PMCID: PMC7355470 DOI: 10.3390/molecules25122835] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/27/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
Selectins belong to a group of adhesion molecules that fulfill an essential role in immune and inflammatory responses and tissue healing. Selectins are glycoproteins that decode the information carried by glycan structures, and non-covalent interactions of selectins with these glycan structures mediate biological processes. The sialylated and fucosylated tetrasaccharide sLex is an essential glycan recognized by selectins. Several glycosyltransferases are responsible for the biosynthesis of the sLex tetrasaccharide. Selectins are involved in a sequence of interactions of circulated leukocytes with endothelial cells in the blood called the adhesion cascade. Recently, it has become evident that cancer cells utilize a similar adhesion cascade to promote metastases. However, like Dr. Jekyll and Mr. Hyde’s two faces, selectins also contribute to tissue destruction during some infections and inflammatory diseases. The most prominent function of selectins is associated with the initial stage of the leukocyte adhesion cascade, in which selectin binding enables tethering and rolling. The first adhesive event occurs through specific non-covalent interactions between selectins and their ligands, with glycans functioning as an interface between leukocytes or cancer cells and the endothelium. Targeting these interactions remains a principal strategy aimed at developing new therapies for the treatment of immune and inflammatory disorders and cancer. In this review, we will survey the significant contributions to and the current status of the understanding of the structure of selectins and the role of selectins in various biological processes. The potential of selectins and their ligands as therapeutic targets in chronic and acute inflammatory diseases and cancer will also be discussed. We will emphasize the structural characteristic of selectins and the catalytic mechanisms of glycosyltransferases involved in the biosynthesis of glycan recognition determinants. Furthermore, recent achievements in the synthesis of selectin inhibitors will be reviewed with a focus on the various strategies used for the development of glycosyltransferase inhibitors, including substrate analog inhibitors and transition state analog inhibitors, which are based on knowledge of the catalytic mechanism.
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Affiliation(s)
- Igor Tvaroška
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
- Institute of Chemistry, Slovak Academy of Sciences, 84538 Bratislava, Slovak Republic
- Correspondence: (I.T.); (J.K.); Tel.: +421-948-535-601 (I.T.); +420-731-682-606 (J.K.)
| | - Chandrabose Selvaraj
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
| | - Jaroslav Koča
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
- Correspondence: (I.T.); (J.K.); Tel.: +421-948-535-601 (I.T.); +420-731-682-606 (J.K.)
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15
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Novel biomarkers of a peripheral blood interferon signature associated with drug-naïve early arthritis patients distinguish persistent from self-limiting disease course. Sci Rep 2020; 10:8830. [PMID: 32483203 PMCID: PMC7264129 DOI: 10.1038/s41598-020-63757-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 03/27/2020] [Indexed: 12/26/2022] Open
Abstract
We profiled gene expression signatures to distinguish rheumatoid arthritis (RA) from non-inflammatory arthralgia (NIA), self-limiting arthritis (SLA), and undifferentiated arthritis (UA) as compared to healthy controls as novel potential biomarkers for therapeutic responsiveness. Global gene expression profiles of PBMCs from 43 drug-naïve patients presenting with joint symptoms were evaluated and differentially expressed genes identified by comparative analysis with 24 healthy volunteers. Patients were assessed at presentation with follow up at 6 and 12 months. Gene ontology and network pathway analysis were performed using DAVID Bioinformatics Resources v6.7. Gene expression profiles were also determined after disease-modifying anti-rheumatic drug (DMARD) treatment in the inflammatory arthritis groups (i.e. RA and UA) and confirmed by qRT-PCR. Receiver operating characteristic (ROC) curves analysis and Area Under the Curve (AUC) estimation were performed to assess the diagnostic value of candidate gene expression signatures. A type I interferon (IFN) gene signature distinguished DMARD-naïve patients who will subsequently develop persistent inflammatory arthritis (i.e. RA and UA) from those with NIA. In patients with RA, the IFN signature is characterised by up-regulation of SIGLEC1 (p = 0.00597) and MS4A4A (p = 0.00000904). We also identified, EPHB2 (p = 0.000542) and PDZK1IP1 (p = 0.0206) with RA-specific gene expression profiles and elevated expression of the ST6GALNAC1 (p = 0.0023) gene in UA. ROC and AUC risk score analysis suggested that MSA4A (AUC: 0.894, 0.644, 0.720), PDZK1IP1 (AUC: 0.785, 0.806, 0.977), and EPHB2 (AUC: 0.794, 0.723, 0.620) at 0, 6, and 12 months follow-up can accurately discriminate patients with RA from healthy controls and may have practical value for RA diagnosis. In patients with early inflammatory arthritis, ST6GALNAC1 is a potential biomarker for UA as compared with healthy controls whereas EPHB2, MS4A4A, and particularly PDZK1IP1 may discriminate RA patients. SIGLEC1 may also be a useful marker of disease activity in UA.
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16
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Virion-incorporated PSGL-1 and CD43 inhibit both cell-free infection and transinfection of HIV-1 by preventing virus-cell binding. Proc Natl Acad Sci U S A 2020; 117:8055-8063. [PMID: 32193343 DOI: 10.1073/pnas.1916055117] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
HIV-1 particles incorporate various host transmembrane proteins in addition to viral Env glycoprotein during assembly at the plasma membrane. In polarized T cells, HIV-1 structural protein Gag localizes to the plasma membrane of uropod, a rear-end protrusion. Notably, uropod transmembrane proteins PSGL-1 and CD43 cocluster specifically with Gag assembling at the plasma membrane even in cells that do not form uropods. Recent reports have shown that expression of either PSGL-1 or CD43 in virus-producing cells reduces the infectivity of progeny virions and that HIV-1 infection reduces the cell surface expression of these proteins. However, the mechanisms for both processes remain to be determined. In this study, we found that virion incorporation of PSGL-1 and CD43 closely correlates with diminished virion infectivity. PSGL-1 and CD43 inhibited virus attachment to CD4+ cells irrespective of the presence of Env. These proteins also inhibited virion attachment to CD4- lymphoid organ fibroblastic reticular cells that mediate transinfection of CD4+ T cells. Consistent with the possibility that highly extended extracellular domains of these proteins physically block virus-cell attachment, the inhibitory effect of PSGL-1 required its full-length ectodomain. HIV-1 encoding Gag mutants that are defective in either coclustering with these host proteins or ESCRT-dependent particle release failed to reduce PSGL-1 on surface of infected cells. This study reveals an anti-HIV-1 mechanism that suppresses virus-cell attachment and a previously unappreciated process of HIV-1-mediated down-regulation of host antiviral proteins, both of which likely require virion incorporation of these proteins.
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17
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Blundell PA, Lu D, Dell A, Haslam S, Pleass RJ. Choice of Host Cell Line Is Essential for the Functional Glycosylation of the Fc Region of Human IgG1 Inhibitors of Influenza B Viruses. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:1022-1034. [PMID: 31907284 PMCID: PMC6994840 DOI: 10.4049/jimmunol.1901145] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 12/02/2019] [Indexed: 12/11/2022]
Abstract
Abs are glycoproteins that carry a conserved N-linked carbohydrate attached to the Fc whose presence and fine structure profoundly impacts on their in vivo immunogenicity, pharmacokinetics, and functional attributes. The host cell line used to produce IgG plays a major role in this glycosylation, as different systems express different glycosylation enzymes and transporters that contribute to the specificity and heterogeneity of the final IgG-Fc glycosylation profile. In this study, we compare two panels of glycan-adapted IgG1-Fc mutants expressed in either the human endothelial kidney 293-F or Chinese hamster ovary-K1 systems. We show that the types of N-linked glycans between matched pairs of Fc mutants vary greatly and in particular, with respect, to sialylation. These cell line effects on glycosylation profoundly influence the ability of the engineered Fcs to interact with either human or pathogen receptors. For example, we describe Fc mutants that potently disrupted influenza B-mediated agglutination of human erythrocytes when expressed in Chinese hamster ovary-K1, but not in human endothelial kidney 293-F cells.
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Affiliation(s)
- Patricia A Blundell
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, United Kingdom; and
| | - Dongli Lu
- Department of Life Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | - Stuart Haslam
- Department of Life Sciences, Imperial College London, London SW7 2AZ, United Kingdom
| | - Richard J Pleass
- Department of Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, United Kingdom; and
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18
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Gupta R, Leon F, Rauth S, Batra SK, Ponnusamy MP. A Systematic Review on the Implications of O-linked Glycan Branching and Truncating Enzymes on Cancer Progression and Metastasis. Cells 2020; 9:E446. [PMID: 32075174 PMCID: PMC7072808 DOI: 10.3390/cells9020446] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 12/27/2022] Open
Abstract
Glycosylation is the most commonly occurring post-translational modifications, and is believed to modify over 50% of all proteins. The process of glycan modification is directed by different glycosyltransferases, depending on the cell in which it is expressed. These small carbohydrate molecules consist of multiple glycan families that facilitate cell-cell interactions, protein interactions, and downstream signaling. An alteration of several types of O-glycan core structures have been implicated in multiple cancers, largely due to differential glycosyltransferase expression or activity. Consequently, aberrant O-linked glycosylation has been extensively demonstrated to affect biological function and protein integrity that directly result in cancer growth and progression of several diseases. Herein, we provide a comprehensive review of several initiating enzymes involved in the synthesis of O-linked glycosylation that significantly contribute to a number of different cancers.
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Affiliation(s)
- Rohitesh Gupta
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA; (R.G.); (F.L.); (S.R.)
| | - Frank Leon
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA; (R.G.); (F.L.); (S.R.)
| | - Sanchita Rauth
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA; (R.G.); (F.L.); (S.R.)
| | - Surinder K. Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA; (R.G.); (F.L.); (S.R.)
- Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 681980-5900, USA
- Department of Pathology and Microbiology, UNMC, Omaha, NE 68198-5900, USA
| | - Moorthy P. Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA; (R.G.); (F.L.); (S.R.)
- Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 681980-5900, USA
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19
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Weil BR, Neelamegham S. Selectins and Immune Cells in Acute Myocardial Infarction and Post-infarction Ventricular Remodeling: Pathophysiology and Novel Treatments. Front Immunol 2019; 10:300. [PMID: 30873166 PMCID: PMC6400985 DOI: 10.3389/fimmu.2019.00300] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 02/05/2019] [Indexed: 12/21/2022] Open
Abstract
The glycosciences aim to understand the impact of extracellular and intracellular carbohydrate structures on biological function. These glycans primarily fall into three major groups: lipid-linked carbohydrates that are referred to as glycosphingolipids or simply glycolipids; relatively short carbohydrate chains that are often O- or N-linked to proteins yielding common glycoproteins; and extended linear polymeric carbohydrate structures that are referred to as glycosaminoglycans (GAGs). Whereas, the impact of such carbohydrate structures has been extensively examined in cancer biology, their role in acute and chronic heart disease is less studied. In this context, a growing body of evidence indicates that glycans play an important role in immune mediated cell recruitment to damaged heart tissue to initiate wound healing and repair after injury. This is particularly important following ischemia and reperfusion that occurs in the heart in the setting of acute myocardial infarction. Here, immune system-mediated repair of the damaged myocardium plays a critical role in determining post-infarction ventricular remodeling, cardiac function, and patient outcome. Further, alterations in immune cell activity can promote the development of heart failure. The present review summarizes our current understanding of the phases of immune-mediated repair following myocardial infarction. It discusses what is known regarding glycans in mediating the recruitment of circulating immune cells during the early inflammatory stage of post-infarction repair, with focus on the selectin family of adhesion molecules. It offers future directions for research aimed at utilizing our knowledge of mechanisms underlying immune cell recruitment to either modulate leukocyte recruitment to the injured tissue or enhance the targeted delivery of biologic therapeutics such as stem cells in an attempt to promote repair of the damaged heart.
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Affiliation(s)
- Brian R Weil
- Department of Physiology and Biophysics, University at Buffalo, State University of New York, Buffalo, NY, United States
| | - Sriram Neelamegham
- Department of Medicine, University at Buffalo, State University of New York, Buffalo, NY, United States.,Department of Chemical & Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY, United States
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20
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Wang SS, Gao X, Solar VD, Yu X, Antonopoulos A, Friedman AE, Matich EK, Atilla-Gokcumen GE, Nasirikenari M, Lau JT, Dell A, Haslam SM, Laine RA, Matta KL, Neelamegham S. Thioglycosides Are Efficient Metabolic Decoys of Glycosylation that Reduce Selectin Dependent Leukocyte Adhesion. Cell Chem Biol 2018; 25:1519-1532.e5. [PMID: 30344053 DOI: 10.1016/j.chembiol.2018.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 08/14/2018] [Accepted: 09/25/2018] [Indexed: 12/24/2022]
Abstract
Metabolic decoys are synthetic analogs of naturally occurring biosynthetic acceptors. These compounds divert cellular biosynthetic pathways by acting as artificial substrates that usurp the activity of natural enzymes. While O-linked glycosides are common, they are only partially effective even at millimolar concentrations. In contrast, we report that N-acetylglucosamine (GlcNAc) incorporated into various thioglycosides robustly truncate cell surface N- and O-linked glycan biosynthesis at 10-100 μM concentrations. The >10-fold greater inhibition is in part due to the resistance of thioglycosides to hydrolysis by intracellular hexosaminidases. The thioglycosides reduce β-galactose incorporation into lactosamine chains, cell surface sialyl Lewis-X expression, and leukocyte rolling on selectin substrates including inflamed endothelial cells under fluid shear. Treatment of granulocytes with thioglycosides prior to infusion into mouse inhibited neutrophil homing to sites of acute inflammation and bone marrow by ∼80%-90%. Overall, thioglycosides represent an easy to synthesize class of efficient metabolic inhibitors or decoys. They reduce N-/O-linked glycan biosynthesis and inflammatory leukocyte accumulation.
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Affiliation(s)
- Shuen-Shiuan Wang
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA
| | - Xuefeng Gao
- TumorEnd LLC, Louisiana Emerging Technology Center, 340 East Parker Drive, Suite 246, Baton Rouge, LA 70803, USA
| | - Virginia Del Solar
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA; Clinical & Translational Research Center and State University of New York, Buffalo, NY 14260, USA
| | - Xinheng Yu
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA
| | | | - Alan E Friedman
- Department of Chemistry, State University of New York, Buffalo, NY 14260, USA
| | - Eryn K Matich
- Department of Chemistry, State University of New York, Buffalo, NY 14260, USA
| | | | - Mehrab Nasirikenari
- Department of Cellular and Molecular Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Joseph T Lau
- Department of Cellular and Molecular Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Anne Dell
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
| | - Stuart M Haslam
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
| | - Roger A Laine
- TumorEnd LLC, Louisiana Emerging Technology Center, 340 East Parker Drive, Suite 246, Baton Rouge, LA 70803, USA
| | - Khushi L Matta
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA; TumorEnd LLC, Louisiana Emerging Technology Center, 340 East Parker Drive, Suite 246, Baton Rouge, LA 70803, USA.
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA; Clinical & Translational Research Center and State University of New York, Buffalo, NY 14260, USA.
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21
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Patrushev AV, Samtsov AV, Nikitin VY, Ivanov AМ, Gumilevskaya OР, Sukharev AV, Sukhina IA. Origin, function and role in the development of skin diseases CLA+T-lymphocytes. VESTNIK DERMATOLOGII I VENEROLOGII 2018. [DOI: 10.25208/0042-4609-2018-94-3-20-29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The idea of CLA+T-lymphocytes, which are a special subpopulation of cells with a tropic to the skin, is given. The issues of maturation, migration and functional features of CLA+T-cells are considered. Special attention is paid to the different phenotype of memory T-cells. Modern data concerning the role of CLA+T-cells in the pathogenesis of autoimmune and allergic dermatoses, as well as malignant skin tumors are also presented. The conclusion about the necessity of further study of CLA +T-lymphocytes for detailed understanding of pathogenesis and search of variants of targeted therapy in psoriasis, atopic dermatitis, skin lymphomas and other skin diseases is made.
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22
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2013-2014. MASS SPECTROMETRY REVIEWS 2018; 37:353-491. [PMID: 29687922 DOI: 10.1002/mas.21530] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/29/2016] [Indexed: 06/08/2023]
Abstract
This review is the eighth update of the original article published in 1999 on the application of Matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2014. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, and arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly- saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2018 Wiley Periodicals, Inc. Mass Spec Rev 37:353-491, 2018.
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Affiliation(s)
- David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
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23
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Videira PA, Silva M, Martin KC, Sackstein R. Ligation of the CD44 Glycoform HCELL on Culture-Expanded Human Monocyte-Derived Dendritic Cells Programs Transendothelial Migration. THE JOURNAL OF IMMUNOLOGY 2018; 201:1030-1043. [PMID: 29941663 DOI: 10.4049/jimmunol.1800188] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 05/23/2018] [Indexed: 12/12/2022]
Abstract
The success of dendritic cell (DC)-based immunotherapeutics critically hinges on the capacity of the vascularly administered cells to enter tissues. Transendothelial migration (TEM) is dictated by an ordered cascade of receptor/ligand interactions. In this study, we examined the key molecular effectors of TEM of human monocyte-derived DCs (mo-DCs) generated by clinically relevant methods: CD14 selection (CD14-S) and plastic adherence selection (PA-S). Without chemokine input, CD14-S cells undergo greater TEM than PA-S cells over TNF-α-stimulated HUVECs. TEM of CD14-S mo-DCs is E-selectin/very late Ag-4 (VLA-4) dependent, and engagement of E-selectin ligands activates VLA-4 on CD14-S mo-DCs but not on PA-S mo-DCs. E-selectin binding glycoforms of P-selectin glycoprotein ligand-1 (PSGL-1) (i.e., cutaneous lymphocyte Ag [CLA]) and CD44 (i.e., hematopoietic cell E-selectin/L-selectin ligand [HCELL]) are both expressed on CD14-S mo-DCs, but only CLA is expressed on PA-S mo-DCs. To elucidate the effect of CD44 or PSGL-1 engagement, mo-DCs were pretreated with their ligands. Ligation of CD44 on CD14-S mo-DCs triggers VLA-4 activation and TEM, whereas PSGL-1 ligation does not. HCELL expression on CD14-S mo-DC can be enforced by cell surface exofucosylation, yielding increased TEM in vitro and enhanced extravasation into bone marrow in vivo. These findings highlight structural and functional pleiotropism of CD44 in priming TEM of mo-DCs and suggest that strategies to enforce HCELL expression may boost TEM of systemically administered CD14-S mo-DCs.
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Affiliation(s)
- Paula A Videira
- Unidade de Ciências Biomoleculares Aplicadas, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.,Centro de Estudos de Doenças Crónicas, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1150-190 Lisbon, Portugal.,Congenital Disorders of Glycosylation and Allies-Professionals and Patient Associations International Network, 2829-516 Caparica, Portugal
| | - Mariana Silva
- Centro de Estudos de Doenças Crónicas, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1150-190 Lisbon, Portugal.,Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and
| | - Kyle C Martin
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and
| | - Robert Sackstein
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; .,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115
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24
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Silva M, Videira PA, Sackstein R. E-Selectin Ligands in the Human Mononuclear Phagocyte System: Implications for Infection, Inflammation, and Immunotherapy. Front Immunol 2018; 8:1878. [PMID: 29403469 PMCID: PMC5780348 DOI: 10.3389/fimmu.2017.01878] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 12/08/2017] [Indexed: 12/20/2022] Open
Abstract
The mononuclear phagocyte system comprises a network of circulating monocytes and dendritic cells (DCs), and “histiocytes” (tissue-resident macrophages and DCs) that are derived in part from blood-borne monocytes and DCs. The capacity of circulating monocytes and DCs to function as the body’s first-line defense against offending pathogens greatly depends on their ability to egress the bloodstream and infiltrate inflammatory sites. Extravasation involves a sequence of coordinated molecular events and is initiated by E-selectin-mediated deceleration of the circulating leukocytes onto microvascular endothelial cells of the target tissue. E-selectin is inducibly expressed by cytokines (tumor necrosis factor-α and IL-1β) on inflamed endothelium, and binds to sialofucosylated glycan determinants displayed on protein and lipid scaffolds of blood cells. Efficient extravasation of circulating monocytes and DCs to inflamed tissues is crucial in facilitating an effective immune response, but also fuels the immunopathology of several inflammatory disorders. Thus, insights into the structural and functional properties of the E-selectin ligands expressed by different monocyte and DC populations is key to understanding the biology of protective immunity and the pathobiology of several acute and chronic inflammatory diseases. This review will address the role of E-selectin in recruitment of human circulating monocytes and DCs to sites of tissue injury/inflammation, the structural biology of the E-selectin ligands expressed by these cells, and the molecular effectors that shape E-selectin ligand cell-specific display. In addition, therapeutic approaches targeting E-selectin receptor/ligand interactions, which can be used to boost host defense or, conversely, to dampen pathological inflammatory conditions, will also be discussed.
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Affiliation(s)
- Mariana Silva
- Department of Dermatology, Harvard Skin Disease Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA, United States
| | - Paula A Videira
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Lisboa, Portugal.,Professionals and Patient Associations International Network (CDG & Allies - PPAIN), Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Robert Sackstein
- Department of Dermatology, Harvard Skin Disease Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA, United States.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
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25
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Naito S, Takahashi T, Onoda J, Uemura S, Ohyabu N, Takemoto H, Yamane S, Fujii I, Nishimura SI, Numata Y. Generation of Novel Anti-MUC1 Monoclonal Antibodies with Designed Carbohydrate Specificities Using MUC1 Glycopeptide Library. ACS OMEGA 2017; 2:7493-7505. [PMID: 30023556 PMCID: PMC6044872 DOI: 10.1021/acsomega.7b00708] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/09/2017] [Indexed: 06/08/2023]
Abstract
Numerous anti-mucin 1 (anti-MUC1) antibodies that recognize O-glycan core structures have already been developed. However, most of them show low specificities toward O-glycan structures and/or low affinity toward a monovalent epitope. In this study, using an MUC1 glycopeptide library, we established two novel anti-MUC1 monoclonal antibodies (1B2 and 12D10) with designed carbohydrate specificities. Compared with previously reported anti-MUC1 antibodies, 1B2 and 12D10 showed quite different features regarding their specificities, affinities, and reactivity profiles to various cell lines. Both antibodies recognized specific O-glycan structures at the PDT*R motif (the asterisk represents an O-glycosylation site). 1B2 recognized O-glycans with an unsubstituted O-6 position of the GalNAc residue (Tn, T, and 23ST), whereas 12D10 recognized Neu5Ac at the same position (STn, 26ST, and dST). Neither of them bound to glycopeptides with core 2 O-glycans that have GlcNAc at the O-6 position of the GalNAc residue. Furthermore, 1B2 and 12D10 showed a strong binding to not only native MUC1 but also 20-mer glycopeptide with a monovalent epitope. These anti-MUC1 antibodies should thus become powerful tools for biological studies on MUC1 O-glycan structures. Furthermore, the strategy of using glycopeptide libraries should enable the development of novel antibodies with predesigned O-glycan specificities.
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Affiliation(s)
- Shoichi Naito
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Tatsuya Takahashi
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Junji Onoda
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Shoko Uemura
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Naoki Ohyabu
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Hiroshi Takemoto
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Shoji Yamane
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
| | - Ikuo Fujii
- School
of Science, Osaka Prefecture University, 1-1 Gakuen-cho,
Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Shin-Ichiro Nishimura
- Faculty
of Advanced Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Yoshito Numata
- Shionogi
Pharmaceutical Research Center, Shionogi
& Co., Ltd., 3-1-1
Futaba-cho, Toyonaka, Osaka 561-0825, Japan
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26
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French BM, Sendil S, Pierson RN, Azimzadeh AM. The role of sialic acids in the immune recognition of xenografts. Xenotransplantation 2017; 24. [PMID: 29057592 PMCID: PMC10167934 DOI: 10.1111/xen.12345] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 07/05/2017] [Accepted: 08/14/2017] [Indexed: 12/11/2022]
Abstract
Presentation of sialic acid (Sia) varies among different tissues and organs within each species, and between species. This diversity has biologically important consequences regarding the recognition of cells by "xeno" antibodies (Neu5Gc vs Neu5Ac). Sia also plays a central role in inflammation by influencing binding of the asialoglycoprotein receptor 1 (ASGR-1), Siglec-1 (Sialoadhesin), and cellular interactions mediated by the selectin, integrin, and galectin receptor families. This review will focus on what is known about basic Sia structure and function in association with xenotransplantation, how changes in sialylation may occur in this context (through desialylation or changes in sialyltransferases), and how this fundamental pathway modulates adhesive and cell activation pathways that appear to be particularly crucial to homeostasis and inflammation for xenografts.
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Affiliation(s)
- Beth M French
- Division of Cardiac Surgery, University of Maryland Baltimore, School of Medicine, and VAMC, Baltimore, MD, USA
| | - Selin Sendil
- Division of Cardiac Surgery, University of Maryland Baltimore, School of Medicine, and VAMC, Baltimore, MD, USA
| | - Richard N Pierson
- Division of Cardiac Surgery, University of Maryland Baltimore, School of Medicine, and VAMC, Baltimore, MD, USA
| | - Agnes M Azimzadeh
- Division of Cardiac Surgery, University of Maryland Baltimore, School of Medicine, and VAMC, Baltimore, MD, USA
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27
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Liu G, Cheng K, Lo CY, Li J, Qu J, Neelamegham S. A Comprehensive, Open-source Platform for Mass Spectrometry-based Glycoproteomics Data Analysis. Mol Cell Proteomics 2017; 16:2032-2047. [PMID: 28887379 DOI: 10.1074/mcp.m117.068239] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 08/23/2017] [Indexed: 12/12/2022] Open
Abstract
Glycosylation is among the most abundant and diverse protein post-translational modifications (PTMs) identified to date. The structural analysis of this PTM is challenging because of the diverse monosaccharides which are not conserved among organisms, the branched nature of glycans, their isomeric structures, and heterogeneity in the glycan distribution at a given site. Glycoproteomics experiments have adopted the traditional high-throughput LC-MSn proteomics workflow to analyze site-specific glycosylation. However, comprehensive computational platforms for data analyses are scarce. To address this limitation, we present a comprehensive, open-source, modular software for glycoproteomics data analysis called GlycoPAT (GlycoProteomics Analysis Toolbox; freely available from www.VirtualGlycome.org/glycopat). The program includes three major advances: (1) "SmallGlyPep," a minimal linear representation of glycopeptides for MSn data analysis. This format allows facile serial fragmentation of both the peptide backbone and PTM at one or more locations. (2) A novel scoring scheme based on calculation of the "Ensemble Score (ES)," a measure that scores and rank-orders MS/MS spectrum for N- and O-linked glycopeptides using cross-correlation and probability based analyses. (3) A false discovery rate (FDR) calculation scheme where decoy glycopeptides are created by simultaneously scrambling the amino acid sequence and by introducing artificial monosaccharides by perturbing the original sugar mass. Parallel computing facilities and user-friendly GUIs (Graphical User Interfaces) are also provided. GlycoPAT is used to catalogue site-specific glycosylation on simple glycoproteins, standard protein mixtures and human plasma cryoprecipitate samples in three common MS/MS fragmentation modes: CID, HCD and ETD. It is also used to identify 960 unique glycopeptides in cell lysates from prostate cancer cells. The results show that the simultaneous consideration of peptide and glycan fragmentation is necessary for high quality MSn spectrum annotation in CID and HCD fragmentation modes. Additionally, they confirm the suitability of GlycoPAT to analyze shotgun glycoproteomics data.
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Affiliation(s)
- Gang Liu
- From the ‡Chemical and Biological Engineering
| | - Kai Cheng
- From the ‡Chemical and Biological Engineering.,§Clinical & Translational Research Center
| | - Chi Y Lo
- From the ‡Chemical and Biological Engineering
| | - Jun Li
- ¶Pharmaceutical Sciences; and.,‖New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York
| | - Jun Qu
- ¶Pharmaceutical Sciences; and.,‖New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York
| | - Sriram Neelamegham
- From the ‡Chemical and Biological Engineering; .,§Clinical & Translational Research Center
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28
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Yu X, Wu Q, Wang L, Zhao Y, Zhang Q, Meng Q, Pawan, Wang S. Silencing of ST6GalNAc I suppresses the proliferation, migration and invasion of hepatocarcinoma cells through PI3K/AKT/NF-κB pathway. Tumour Biol 2016; 37:12213-12221. [PMID: 27235117 DOI: 10.1007/s13277-016-5086-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/15/2016] [Indexed: 12/29/2022] Open
Abstract
ST6GalNAc I is the major Sialyl-Tn antigen (STn) synthase that is highly correlated with tumor invasion and metastasis. However, the roles and molecular mechanisms by which ST6GalNAc I mediates the malignant phenotypes of hepatocarcinoma cells still remain poorly unknown. In this study, we investigated the expression of STn and ST6GalNAc I in mouse hepatocarcinoma cell lines Hca-F, Hca-P, and Hepa1-6, which have different metastatic potential, as compared with normal mouse liver cell line IAR-20. The results showed that the expression of ST6GalNAc I and STn in Hca-F and Hca-P cells was much higher than that in Hepa1-6 and IAR20 cells. Knockdown of ST6GalNAc I by shRNA in Hca-F cells significantly decreased the expression of STn and inhibited the growth of tumor cells in vitro and in vivo. This reduction of ST6GalNAc I expression also led to the decreased migration and invasion of Hca-F cells. Furthermore, we found that ST6GalNAc I knockdown inhibited the expression levels of PI3k, p-Akt473, p-Akt308, NF-κB, and their downstream molecules. Together, our results suggest a role of ST6GalNAc I in promoting the growth and invasion of hepatocarcinoma cells through regulating PI3K/AKT signaling, and ST6GalNAc I might be a promising marker for the prognosis and therapy of hepatocarcinoma.
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Affiliation(s)
- Xiao Yu
- Department of Pathology, Dalian Medical University, Dalian, 116044, Liaoning Province, China
| | - Qiang Wu
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Lvshun South Road, Dalian, 116044, Liaoning Province, China
| | - Liping Wang
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Lvshun South Road, Dalian, 116044, Liaoning Province, China
| | - Yujie Zhao
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Lvshun South Road, Dalian, 116044, Liaoning Province, China
| | - Qingqing Zhang
- Department of Pathology, Dalian Medical University, Dalian, 116044, Liaoning Province, China
| | - Qingtao Meng
- Department of Surgery, The Third People's Hospital of Dalian, Affiliated Hospital of Dalian Medical University, Dalian, 116000, Liaoning Province, China
| | - Pawan
- Department of Pathology, Dalian Medical University, Dalian, 116044, Liaoning Province, China
| | - Shujing Wang
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Lvshun South Road, Dalian, 116044, Liaoning Province, China.
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29
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Mondal N, Stolfa G, Antonopoulos A, Zhu Y, Wang SS, Buffone A, Atilla-Gokcumen GE, Haslam SM, Dell A, Neelamegham S. Glycosphingolipids on Human Myeloid Cells Stabilize E-Selectin-Dependent Rolling in the Multistep Leukocyte Adhesion Cascade. Arterioscler Thromb Vasc Biol 2016; 36:718-27. [PMID: 26868209 DOI: 10.1161/atvbaha.115.306748] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/01/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Recent studies suggest that the E-selectin ligands expressed on human leukocytes may differ from those in other species, particularly mice. To elaborate on this, we evaluated the impact of glycosphingolipids expressed on human myeloid cells in regulating E-selectin-mediated cell adhesion. APPROACH AND RESULTS A series of modified human cell lines and primary neutrophils were created by targeting UDP-Glucose Ceramide Glucosyltransferase using either lentivirus-delivered shRNA or CRISPR-Cas9-based genome editing. Enzymology and mass spectrometry confirm that the modified cells had reduced or abolished glucosylceramide biosynthesis. Glycomics profiling showed that UDP-Glucose Ceramide Glucosyltransferase disruption also increased prevalence of bisecting N-glycans and reduced overall sialoglycan expression on leukocyte N- and O-glycans. Microfluidics-based flow chamber studies demonstrated that both the UDP-Glucose Ceramide Glucosyltransferase knockouts and knockdowns display ≈60% reduction in leukocyte rolling and firm adhesion on E-selectin bearing stimulated endothelial cells, without altering cell adhesion to P-selectin. Consistent with the concept that the glycosphingolipids support slow rolling and the transition to firm arrest, inhibiting UDP-Glucose Ceramide Glucosyltransferase activity resulted in frequent leukocyte detachment events, skipping motion, and reduced diapedesis across the endothelium. Cells bearing truncated O- and N-glycans also sustained cell rolling on E-selectin, although their ability to be recruited from free fluid flow was diminished. CONCLUSIONS Glycosphingolipids likely contribute to human myeloid cell adhesion to E-selectin under fluid shear, particularly the transition of rolling cells to firm arrest.
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Affiliation(s)
- Nandini Mondal
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Gino Stolfa
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Aristotelis Antonopoulos
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Yuqi Zhu
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Shuen-Shiuan Wang
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Alexander Buffone
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - G Ekin Atilla-Gokcumen
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Stuart M Haslam
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Anne Dell
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.)
| | - Sriram Neelamegham
- From the Department of Chemical and Biological Engineering (N.M., G.S., Y.Z., S.-S.W., A.B., S.N.), Department of Chemistry (G.E.A.-G.), and The NY State Center for Excellence in Bioinformatics and Life Sciences (S.N.), State University of New York, Buffalo; and Department of Life Sciences, Imperial College London, London, UK (A.A., S.M.H., A.D.).
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30
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Svala E, Jin C, Rüetschi U, Ekman S, Lindahl A, Karlsson NG, Skiöldebrand E. Characterisation of lubricin in synovial fluid from horses with osteoarthritis. Equine Vet J 2015; 49:116-123. [PMID: 26507102 DOI: 10.1111/evj.12521] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 10/14/2015] [Indexed: 12/19/2022]
Abstract
REASON FOR PERFORMING STUDY The glycoprotein lubricin contributes to the boundary lubrication of the articular cartilage surface. The early events of osteoarthritis involve the superficial layer where lubricin is synthesised. OBJECTIVES To characterise the glycosylation profile of lubricin in synovial fluid from horses with osteoarthritis and study secretion and degradation of lubricin in an in vitro inflammation cartilage model. STUDY DESIGN In vitro study. METHODS Synovial fluid samples collected from horses with joints with normal articular cartilage and structural osteoarthritic lesions; with and without osteochondral fragments, were analysed for the lubricin glycosylation profiles. Articular cartilage explants were stimulated with or without interleukin-1β for 25 days. Media samples collected at 3-day intervals were analysed by quantitative proteomics, western blot and enzyme-linked immunosorbent assay. RESULTS O-glycosylation profiles in synovial fluid revealed both Core 1 and 2 O-glycans, with Core 1 O-glycans predominating. Synovial fluid from normal joints (49.5 ± 1.9%) contained significantly lower amounts of monosialylated Core 1 O-glycans compared with joints with osteoarthritis (53.8 ± 7.8%, P = 0.03) or joints with osteochondral fragments (57.3 ± 8.8%, P = 0.001). Additionally, synovial fluid from normal joints (26.7 ± 6.7%) showed higher amounts of disialylated Core 1 O-glycan than from joints with osteochondral fragments (21.2 ± 4.9%, P = 0.03). A C-terminal proteolytic cleavage site in lubricin was found in synovial fluid from normal and osteochondral fragment joints and in media from interleukin-1β stimulated and unstimulated articular cartilage explants. CONCLUSIONS This is the first demonstration of a change in the glycosylation profile of lubricin in synovial fluid from diseased equine joints compared with that from normal joints. We demonstrate an identical proteolytic cleavage site of lubricin both in vitro and in vivo. The reduced sialation of lubricin in synovial fluid from diseased joints may affect the boundary lubricating ability of the superficial layer of articular cartilage and could be one of the early events in the progression of osteoarthritis.
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Affiliation(s)
- E Svala
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Sweden.,Section of Pathology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - C Jin
- Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, Sweden
| | - U Rüetschi
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Sweden
| | - S Ekman
- Section of Pathology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - A Lindahl
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Sweden
| | - N G Karlsson
- Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, Sweden
| | - E Skiöldebrand
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Sweden.,Section of Pathology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
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31
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Wu ZL, Huang X, Burton AJ, Swift KAD. Probing sialoglycans on fetal bovine fetuin with azido-sugars using glycosyltransferases. Glycobiology 2015; 26:329-34. [DOI: 10.1093/glycob/cwv109] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 11/15/2015] [Indexed: 12/22/2022] Open
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32
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Lo CY, Weil BR, Palka BA, Momeni A, Canty JM, Neelamegham S. Cell surface glycoengineering improves selectin-mediated adhesion of mesenchymal stem cells (MSCs) and cardiosphere-derived cells (CDCs): Pilot validation in porcine ischemia-reperfusion model. Biomaterials 2015; 74:19-30. [PMID: 26433489 DOI: 10.1016/j.biomaterials.2015.09.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 09/15/2015] [Indexed: 12/20/2022]
Abstract
Promising results are emerging in clinical trials focused on stem cell therapy for cardiology applications. However, the low homing and engraftment of the injected cells to target tissue continues to be a problem. Cellular glycoengineering can address this limitation by enabling the targeting of stem cells to sites of vascular injury/inflammation. Two such glycoengineering methods are presented here: i. The non-covalent incorporation of a P-selectin glycoprotein ligand-1 (PSGL-1) mimetic 19Fc[FUT7(+)] via lipid-protein G fusion intermediates that intercalate onto the cell surface, and ii. Over-expression of the α(1,3)fucosyltransferse FUT7 in cells. Results demonstrate the efficient coupling of 19Fc[FUT7(+)] onto both cardiosphere-derived cells (CDCs) and mesenchymal stem cells (MSCs), with coupling being more efficient when using protein G fused to single-tailed palmitic acid rather than double-tailed DOPE (1,2-dioleoyl-sn-glycero-3-phosphoethanolamine). This non-covalent cellular modification was mild since cell proliferation and stem-cell marker expression was unaltered. Whereas coupling using 19Fc[FUT7(+)] enhanced cell capture on recombinant P-selectin or CHO-P cell surfaces, α(1,3)fucosylation was necessary for robust binding to E-selectin and inflamed endothelial cells under shear. Pilot studies confirm the safety and homing efficacy of the modified stem cells to sites of ischemia-reperfusion in the porcine heart. Overall, glycoengineering with physiological selectin-ligands may enhance stem cell engraftment.
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Affiliation(s)
- Chi Y Lo
- Department of Chemical and Biological Engineering, The State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA; Department of Anesthesiology, The State University of New York, 252 Farber Hall, Buffalo, NY 14214, USA; Division of Cardiovascular Medicine, The State University of New York, Clinical Translational Research Center, 875 Ellicott Street, Buffalo, NY 14203, USA
| | - Brian R Weil
- Division of Cardiovascular Medicine, The State University of New York, Clinical Translational Research Center, 875 Ellicott Street, Buffalo, NY 14203, USA
| | - Beth A Palka
- Division of Cardiovascular Medicine, The State University of New York, Clinical Translational Research Center, 875 Ellicott Street, Buffalo, NY 14203, USA
| | - Arezoo Momeni
- Department of Chemical and Biological Engineering, The State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA
| | - John M Canty
- Division of Cardiovascular Medicine, The State University of New York, Clinical Translational Research Center, 875 Ellicott Street, Buffalo, NY 14203, USA; VA Western New York Health Care System, Buffalo, NY 14215, USA
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, The State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA; The NY State Center for Excellence in Bioinformatics and Life Sciences, The State University of New York, 701 Ellicott St., Buffalo, NY 14203, USA.
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Chitgupi U, Zhang Y, Lo CY, Shao S, Song W, Geng J, Neelamegham S, Lovell JF. Sulfonated Polyethylenimine for Photosensitizer Conjugation and Targeting. Bioconjug Chem 2015; 26:1633-9. [PMID: 26057017 DOI: 10.1021/acs.bioconjchem.5b00241] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polysulfonated macromolecules are known to bind selectins, adhesion membrane proteins which are broadly implicated in inflammation. Commercially available branched polyethylenimine (PEI) was reacted with chlorosulfonic acid to generate sulfonated PEI with varying degrees of sulfonation. Remaining unreacted amine groups were then used for straightforward conjugation with pyropheophoribide-a, a near-infrared photosensitizer. Photosensitizer-labeled sulfonated PEI conjugates inhibited blood coagulation and were demonstrated to specifically bind to cells genetically programmed to overexpress L-selectin (CD62L) or P-selectin (CD62P). In vitro, following targeting, selectin-expressing cells could be destroyed via photodynamic therapy.
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Affiliation(s)
- Upendra Chitgupi
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Yumiao Zhang
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Chi Y Lo
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Shuai Shao
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Wentao Song
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Jumin Geng
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Sriram Neelamegham
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Jonathan F Lovell
- †Department of Biomedical Engineering and ‡Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
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Liu G, Neelamegham S. Integration of systems glycobiology with bioinformatics toolboxes, glycoinformatics resources, and glycoproteomics data. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2015; 7:163-81. [PMID: 25871730 DOI: 10.1002/wsbm.1296] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 02/08/2015] [Accepted: 03/04/2015] [Indexed: 12/22/2022]
Abstract
The glycome constitutes the entire complement of free carbohydrates and glycoconjugates expressed on whole cells or tissues. 'Systems Glycobiology' is an emerging discipline that aims to quantitatively describe and analyse the glycome. Here, instead of developing a detailed understanding of single biochemical processes, a combination of computational and experimental tools are used to seek an integrated or 'systems-level' view. This can explain how multiple biochemical reactions and transport processes interact with each other to control glycome biosynthesis and function. Computational methods in this field commonly build in silico reaction network models to describe experimental data derived from structural studies that measure cell-surface glycan distribution. While considerable progress has been made, several challenges remain due to the complex and heterogeneous nature of this post-translational modification. First, for the in silico models to be standardized and shared among laboratories, it is necessary to integrate glycan structure information and glycosylation-related enzyme definitions into the mathematical models. Second, as glycoinformatics resources grow, it would be attractive to utilize 'Big Data' stored in these repositories for model construction and validation. Third, while the technology for profiling the glycome at the whole-cell level has been standardized, there is a need to integrate mass spectrometry derived site-specific glycosylation data into the models. The current review discusses progress that is being made to resolve the above bottlenecks. The focus is on how computational models can bridge the gap between 'data' generated in wet-laboratory studies with 'knowledge' that can enhance our understanding of the glycome.
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Affiliation(s)
- Gang Liu
- Department of Chemical and Biological Engineering, State University of New York, Buffalo, NY, USA
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, State University of New York, Buffalo, NY, USA
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ST3Gal-4 is the primary sialyltransferase regulating the synthesis of E-, P-, and L-selectin ligands on human myeloid leukocytes. Blood 2014; 125:687-96. [PMID: 25498912 DOI: 10.1182/blood-2014-07-588590] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The precise glycosyltransferase enzymes that mediate selectin-ligand biosynthesis in human leukocytes are unknown. This knowledge is important because selectin-mediated cell tethering and rolling is a critical component of both normal immune response and various vascular disorders. We evaluated the role of 3 α(2,3)sialyltransferases, ST3Gal-3, -4, and -6, which act on the type II N-Acetyllactosamine structure (Galβ1,4GlcNAc) to create sialyl Lewis-X (sLe(X)) and related sialofucosylated glycans on human leukocytes of myeloid lineage. These genes were either silenced using lentiviral short hairpin RNA (shRNA) or functionally ablated using the clustered regularly interspaced short palindromic repeat/Cas9 technology. The results show that ST3Gal-4, but not ST3Gal-3 or -6, is the major sialyltransferase regulating the biosynthesis of E-, P-, and L-selectin ligands in humans. Reduction in ST3Gal-4 activity lowered cell-surface HECA-452 epitope expression by 75% to 95%. Glycomics profiling of knockouts demonstrate an almost complete loss of the sLe(X) epitope on both leukocyte N- and O-glycans. In cell-adhesion studies, ST3Gal-4 knockdown/knockout cells displayed 90% to 100% reduction in tethering and rolling density on all selectins. ST3Gal-4 silencing in neutrophils derived from human CD34(+) hematopoietic stem cells also resulted in 80% to 90% reduction in cell adhesion to all selectins. Overall, a single sialyltransferase regulates selectin-ligand biosynthesis in human leukocytes, unlike mice where multiple enzymes contribute to this function.
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36
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Madabhushi SR, Zhang C, Kelkar A, Dayananda KM, Neelamegham S. Platelet GpIba binding to von Willebrand Factor under fluid shear:contributions of the D′D3-domain, A1-domain flanking peptide and O-linked glycans. J Am Heart Assoc 2014; 3:e001420. [PMID: 25341886 PMCID: PMC4323794 DOI: 10.1161/jaha.114.001420] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Von Willebrand Factor (VWF) A1-domain binding to platelet receptor GpIbα is an important fluid-shear dependent interaction that regulates both soluble VWF binding to platelets, and platelet tethering onto immobilized VWF. We evaluated the roles of different structural elements at the N-terminus of the A1-domain in regulating shear dependent platelet binding. Specifically, the focus was on the VWF D'D3-domain, A1-domain N-terminal flanking peptide (NFP), and O-glycans on this peptide. METHODS AND RESULTS Full-length dimeric VWF (ΔPro-VWF), dimeric VWF lacking the D'D3 domain (ΔD'D3-VWF), and ΔD'D3-VWF variants lacking either the NFP (ΔD'D3NFP(─)-VWF) or just O-glycans on this peptide (ΔD'D3OG(─)-VWF) were expressed. Monomeric VWF-A1 and D'D3-A1 were also produced. In ELISA, the apparent dissociation constant (KD) of soluble ΔPro-VWF binding to immobilized GpIbα (KD≈100 nmol/L) was 50- to 100-fold higher than other proteins lacking the D'D3 domain (KD~0.7 to 2.5 nmol/L). Additionally, in surface plasmon resonance studies, the on-rate of D'D3-A1 binding to immobilized GpIbα (kon=1.8±0.4×10(4) (mol/L)(-1)·s(-1); KD=1.7 μmol/L) was reduced compared with the single VWF-A1 domain (kon=5.1±0.4×10(4) (mol/L)(-1)·s(-1); KD=1.2 μmol/L). Thus, VWF-D'D3 primarily controls soluble VWF binding to GpIbα. In contrast, upon VWF immobilization, all molecular features regulated A1-GpIbα binding. Here, in ELISA, the number of apparent A1-domain sites available for binding GpIbα on ΔPro-VWF was ≈50% that of the ΔD'D3-VWF variants. In microfluidics based platelet adhesion measurements on immobilized VWF and thrombus formation assays on collagen, human platelet recruitment varied as ΔPro-VWF<ΔD'D3-VWF<ΔD'D3NFP(─)-VWF<ΔD'D3OG(─)-VWF. CONCLUSIONS Whereas VWF-D'D3 is the major regulator of soluble VWF binding to platelet GpIbα, both the D'D3-domain and N-terminal peptide regulate platelet translocation and thrombus formation.
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Affiliation(s)
- Sri R Madabhushi
- Department of Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY (S.R.M., C.Z., A.K., K.M.D., S.N.)
| | - Changjie Zhang
- Department of Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY (S.R.M., C.Z., A.K., K.M.D., S.N.)
| | - Anju Kelkar
- Department of Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY (S.R.M., C.Z., A.K., K.M.D., S.N.)
| | - Kannayakanahalli M Dayananda
- Department of Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY (S.R.M., C.Z., A.K., K.M.D., S.N.)
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY (S.R.M., C.Z., A.K., K.M.D., S.N.)
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Liu G, Neelamegham S. A computational framework for the automated construction of glycosylation reaction networks. PLoS One 2014; 9:e100939. [PMID: 24978019 PMCID: PMC4076241 DOI: 10.1371/journal.pone.0100939] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/02/2014] [Indexed: 11/18/2022] Open
Abstract
Glycosylation is among the most common and complex post-translational modifications identified to date. It proceeds through the catalytic action of multiple enzyme families that include the glycosyltransferases that add monosaccharides to growing glycans, and glycosidases which remove sugar residues to trim glycans. The expression level and specificity of these enzymes, in part, regulate the glycan distribution or glycome of specific cell/tissue systems. Currently, there is no systematic method to describe the enzymes and cellular reaction networks that catalyze glycosylation. To address this limitation, we present a streamlined machine-readable definition for the glycosylating enzymes and additional methodologies to construct and analyze glycosylation reaction networks. In this computational framework, the enzyme class is systematically designed to store detailed specificity data such as enzymatic functional group, linkage and substrate specificity. The new classes and their associated functions enable both single-reaction inference and automated full network reconstruction, when given a list of reactants and/or products along with the enzymes present in the system. In addition, graph theory is used to support functions that map the connectivity between two or more species in a network, and that generate subset models to identify rate-limiting steps regulating glycan biosynthesis. Finally, this framework allows the synthesis of biochemical reaction networks using mass spectrometry (MS) data. The features described above are illustrated using three case studies that examine: i) O-linked glycan biosynthesis during the construction of functional selectin-ligands; ii) automated N-linked glycosylation pathway construction; and iii) the handling and analysis of glycomics based MS data. Overall, the new computational framework enables automated glycosylation network model construction and analysis by integrating knowledge of glycan structure and enzyme biochemistry. All the implemented features are provided as part of the Glycosylation Network Analysis Toolbox (GNAT), an open-source, platform-independent, MATLAB based toolbox for studies of Systems Glycobiology.
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Affiliation(s)
- Gang Liu
- Department of Chemical and Biological Engineering, and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, New York, United States of America
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, New York, United States of America
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Lo CY, Antonopoulos A, Dell A, Haslam SM, Lee T, Neelamegham S. The use of surface immobilization of P-selectin glycoprotein ligand-1 on mesenchymal stem cells to facilitate selectin mediated cell tethering and rolling. Biomaterials 2013; 34:8213-22. [PMID: 23891082 DOI: 10.1016/j.biomaterials.2013.07.033] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 07/09/2013] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem/stromal cells (MSCs) are an important candidate for cell-based therapy since they can be easily isolated and expanded, secrete beneficial paracrine factors, and differentiate into multiple lineages. Since the endothelium at sites of injury and inflammation often express adhesion molecules belonging to the selectin family, methods to endow MSCs with selectin-ligands can enhance the efficacy of cell delivery and tissue engraftment. Here, we describe a construct 19Fc[FUT7(+)], where the first 19 amino acids of the pan-selectin ligand PSGL-1 (P-selectin glycoprotein ligand-1) was fused to a human IgG1. When expressed in HEK293T cells over-expressing the α(1,3)fucosyltransferase FUT7, 19Fc[FUT7(+)] is decorated by a core-2 sialyl Lewis-X sialofucosylated O-glycan. The non-covalent coupling of this protein onto MSC surface using palmitated protein G (PPG) enhanced cell binding to E- and P-selectin under hydrodynamic shear, without altering MSC multipotency. MSCs functionalized with 19Fc[FUT7(+)] were captured/tethered onto stimulated endothelial cell monolayers at wall shear stresses up to 4 dyn/cm(2). Once captured, the cells rolled robustly up to the highest shear stress tested, 10 dyn/cm(2). Unlike previous work where MSCs could only be captured onto selectin-bearing substrates at low or no-flow conditions, the current work presents a 'glycan engineering' strategy to enable leukocyte-like capture and rolling.
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Affiliation(s)
- Chi Y Lo
- Department of Chemical and Biological Engineering, The State University of New York, 906 Furnas Hall, Buffalo, NY 14260, USA
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Mondal N, Buffone A, Neelamegham S. Distinct glycosyltransferases synthesize E-selectin ligands in human vs. mouse leukocytes. Cell Adh Migr 2013; 7:288-92. [PMID: 23590904 PMCID: PMC3711995 DOI: 10.4161/cam.24714] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The binding of selectins to carbohydrate epitopes expressed on leukocytes is the first step in a multi-step cell adhesion cascade that controls the rate of leukocyte recruitment at sites of inflammation. The glycans that function as selectin-ligands are post-translationally synthesized by the serial action of Golgi resident enzymes called glycosyltransferases (glycoTs). Whereas much of our current knowledge regarding the role of glycoTs in constructing selectin-ligands comes from reconstituted biochemical investigations or murine models, tools to assess the impact of these enzymes on the human ligands are relatively underdeveloped. This is significant since the selectin-ligands, particularly those that bind E-selectin, vary between different leukocyte cell populations and they are also different in humans compared with mice. To address this shortcoming, a recent study by Buffone et al. (2013) outlines a systematic strategy to knockdown upto three glycoTs simultaneously in human leukocytes. The results suggest that the fucosyltransferases (FUTs) regulating selectin-ligand synthesis may be species-specific. In particular, they demonstrate that FUT9 plays a significant role during human, but not mouse, leukocyte-endothelial interactions. Overall, this article discusses the relative roles of the FUTs during human L-, E-, and P-selectin-ligand biosynthesis, and the potential that the knockdown strategy outlined here may assess the role of other glycoTs in human leukocytes also.
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Affiliation(s)
- Nandini Mondal
- Chemical and Biological Engineering and The NY State Center for Excellence in Bioinformatics and Life Sciences, State University of New York, Buffalo, NY, USA
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