151
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Li N, Zhang W, Lin L, Shah SNA, Li Y, Lin JM. Nongenetically Encoded and Erasable Imaging Strategy for Receptor-Specific Glycans on Live Cells. Anal Chem 2019; 91:2600-2604. [DOI: 10.1021/acs.analchem.8b05292] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Nan Li
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Weifei Zhang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Ling Lin
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Syed Niaz Ali Shah
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yuxuan Li
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Jin-Ming Lin
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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152
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A practical approach to enrich intact tryptic N-glycopeptides through size exclusion chromatography and hydrophilicity (SELIC) using an acrylamide-agarose composite gel system. Anal Chim Acta 2019; 1058:107-116. [PMID: 30851844 DOI: 10.1016/j.aca.2019.01.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/14/2019] [Accepted: 01/22/2019] [Indexed: 12/18/2022]
Abstract
Increasing researches proved that abnormal glycosylation is strongly correlated with many diseases. Specially, site-specific glycosylation and its associated heterogeneity are closely related to the function and activity of the glycoprotein. However, intact N-glycopeptide analysis still faces great challenges because the presence of highly abundant non-glycosylated peptides would suppress the ionization of lowly abundant glycopeptides. In the present study, we developed a practical intact tryptic N-glycopeptide enrichment method using acrylamide-agarose composite gel that combined the size exclusion chromatography and hydrophilic (named SELIC) effects, aimed to remove the detergent rapidly and effectively, as well as enrich intact N-glycopeptides while extracting peptides. This is a useful tool to facilitate the intact N-glycopeptides analysis of complex protein mixtures, particularly for samples that extracted from formalin-fixed and paraffin-embedded (FFPE) tissues by SDS. Using this method, we successfully identified 700 site-specific intact tryptic N-glycopeptides corresponding to 261 glycosylation sites on 191 glycoproteins from FFPE thymoma tissues.
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153
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N-Glycosylation of Seasonal Influenza Vaccine Hemagglutinins: Implication for Potency Testing and Immune Processing. J Virol 2019; 93:JVI.01693-18. [PMID: 30355697 DOI: 10.1128/jvi.01693-18] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 10/13/2018] [Indexed: 12/16/2022] Open
Abstract
Prior to each annual flu season, health authorities recommend three or four virus strains for inclusion in the annual influenza vaccine: a type A:H1N1 virus, a type A:H3N2 virus, and one or two type B viruses. Antigenic differences between strains are found in the glycosylation patterns of the major influenza virus antigen, hemagglutinin (HA). Here we examine the glycosylation patterns of seven reference antigens containing HA used in influenza vaccine potency testing. These reagents are supplied by the Center for Biologics Evaluation and Research (CBER) or the National Institute for Biological Standards and Control (NIBSC) for use in vaccine testing. Those produced in hen egg, Madin-Darby canine kidney (MDCK), and insect (Sf9) expression systems were examined. They are closely related or identical to antigens used in commercial vaccines. The reference antigens studied were used in the 2014-2015 influenza season and included A/California/07/2009 H1N1, A/Texas/50/2012 H3N2, and B/Massachusetts/02/2012. Released glycan and HA-specific glycopeptide glycosylation patterns were examined. We also examined the sensitivity of the single radial immunodiffusion (SRID) potency test to differences in HA antigen glycosylation. Based on deglycosylation studies applied using standard assay procedures, the SRID assay was not sensitive to any HA antigen glycosylation status from any cell system. Mapping of glycosites with their occupying glycan to functional regions, including antigenic sites, lectin interaction regions, and fusion domains, was performed and has implications for immune processing, immune responses, and antigenic shielding. Differences in glycosylation patterns, as dictated by the cell system used for expression, may impact these functions.IMPORTANCE In the present study, the glycosylation patterns of the 2014-2015 influenza vaccine season standard antigens A/California/07/2009 H1N1, A/Texas/50/2012 H3N2, and B/Massachusetts/02/2012 were revealed, and the sensitivity of the single radial immunodiffusion (SRID) potency test to glycosylation was tested. Differences in hemagglutinin glycosylation site composition and heterogeneity seen in antigens produced in different cell substrates suggest differences in processing and downstream immune responses. The SRID potency test used for vaccine release is not sensitive to differences in glycosylation under standard use conditions. This work reveals important differences in vaccine antigens and may point out areas where improvements may be made concerning vaccine antigen preparation, immune processing, and testing.
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154
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Xue X, Lu R, Liu M, Li Y, Li J, Wang L. A facile and general approach for the preparation of boronic acid-functionalized magnetic nanoparticles for the selective enrichment of glycoproteins. Analyst 2019; 144:641-648. [DOI: 10.1039/c8an01704b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Biomedical applications and biomarkers for early clinical diagnostics and the treatment of diseases demand efficient and selective enrichment platforms for glycoproteins.
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Affiliation(s)
- Xiaoting Xue
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Rui Lu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Min Liu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Yi Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Jiansheng Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Lianjun Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
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155
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Boilève A, Carlo MI, Barthélémy P, Oudard S, Borchiellini D, Voss MH, George S, Chevreau C, Landman-Parker J, Tabone MD, Chism DD, Amin A, Bilen MA, Bosse D, Coulomb-L'hermine A, Su X, Choueiri TK, Tannir NM, Malouf GG. Immune checkpoint inhibitors in MITF family translocation renal cell carcinomas and genetic correlates of exceptional responders. J Immunother Cancer 2018; 6:159. [PMID: 30591082 PMCID: PMC6307255 DOI: 10.1186/s40425-018-0482-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/13/2018] [Indexed: 01/05/2023] Open
Abstract
Background Microphthalmia Transcription Factor (MITF)family translocation renal cell carcinoma (tRCC) is a rare RCC subtype harboring TFE3/TFEB translocations. The prognosis in the metastatic (m) setting is poor. Programmed death ligand-1 expression was reported in 90% of cases, prompting us to analyze the benefit of immune checkpoint inhibitors (ICI) in this population. Patients and methods This multicenter retrospective study identified patients with MITF family mtRCC who had received an ICI in any of 12 referral centers in France or the USA. Response rate according to RECIST criteria, progression-free survival (PFS), and overall survival (OS) were analyzed. Genomic alterations associated with response were determined for 8 patients. Results Overall, 24 patients with metastatic disease who received an ICI as second or later line of treatment were identified. Nineteen (82.6%) of these patients had received a VEGFR inhibitor as first-line treatment, with a median PFS of 3 months (range, 1–22 months). The median PFS for patients during first ICI treatment was 2.5 months (range, 1–40 months); 4 patients experienced partial response (16,7%) and 3 (12,5%) had stable disease. Of the patients whose genomic alterations were analyzed, two patients with mutations in bromodomain-containing genes (PBRM1 and BRD8) had a clinical benefit. Resistant clones in a patient with exceptional response to ipilimumab showed loss of BRD8 mutations and increased mutational load driven by parallel evolution affecting 17 genes (median mutations per gene, 3), which were enriched mainly for O-glycan processing (29.4%, FDR = 9.7 × 10− 6). Conclusions MITF family tRCC is an aggressive disease with similar responses to ICIs as clear-cell RCC. Mutations in bromodomain-containing genes might be associated with clinical benefit. The unexpected observation about parallel evolution of genes involved in O-glycosylation as a mechanism of resistance to ICI warrants exploration.
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Affiliation(s)
- A Boilève
- Department of Medical Oncology, Hôpital Universitaire Pitié-Salpétrière, Paris, France
| | - M I Carlo
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - P Barthélémy
- Service d'Hématologie et d'Oncologie, Centre Hospitalier Universitaire de Strasbourg, Strasbourg, France
| | - S Oudard
- Oncology Department, European Georges Pompidou Hospital, René Descartes University, Paris, France.,Association pour la Recherche sur les Thérapeutiques Innovantes en Cancérologie, Paris, France.,U790 PARCC, European Georges Pompidou Hospital, René Descartes University, Paris, France
| | | | - M H Voss
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - S George
- Department of Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - C Chevreau
- IUCT-Oncopole, Institut Claudius-Regaud, Toulouse, France
| | - J Landman-Parker
- Service d'Hématologie et d'Oncologie Pédiatrique, Hopital Armand-Trousseau, Paris, France
| | - M-D Tabone
- Service d'Hématologie et d'Oncologie Pédiatrique, Hopital Armand-Trousseau, Paris, France
| | - D D Chism
- Division of Hematology and Oncology, Department of Medicine, Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - A Amin
- Carolinas Healthcare System, Levine Cancer Institute, Charlotte, NC, USA
| | - M A Bilen
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - D Bosse
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Xiaoping Su
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - T K Choueiri
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Nizar M Tannir
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Gabriel G Malouf
- Department of Medical Oncology, Hôpital Universitaire Pitié-Salpétrière, Paris, France. .,Service d'Hématologie et d'Oncologie, Centre Hospitalier Universitaire de Strasbourg, Strasbourg, France. .,Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France. .,Department of Hematology and Oncology, Centre Hospitalier Universitaire de Strasbourg, 1, Place de l'Hôpital, 67000, Strasbourg, France.
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156
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Yuan L, Chen WJ, Wang JY, Li Y, Tian D, Wang MX, Yu HT, Xu YC, Li D, Zhuang M, Ling H. Divergent Primary Immune Responses Induced by Human Immunodeficiency Virus-1 gp120 and Hepatitis B Surface Antigen Determine Antibody Recall Responses. Virol Sin 2018; 33:502-514. [PMID: 30569292 PMCID: PMC6335216 DOI: 10.1007/s12250-018-0074-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 11/07/2018] [Indexed: 12/19/2022] Open
Abstract
The development of a vaccine based on human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein (Env) that elicits potent protective antibodies against infection has been challenging. Recently, we compared the antibody production patterns of HIV-1 Env gp120 and hepatitis B virus surface antigen (HBsAg) to provide insights into how we may improve the protective efficacy of Env-based immunogens. Our previous study showed that HIV Env and HBsAg display different mechanisms of antibody elicitation and that T cells facilitate the responses to repeated immunizations. Here, to elucidate the detailed roles of primary immunization in immune memory response formation and antibody production, we immunized C57BL/6 mice with each antigen and evaluated the development of T follicular helper (Tfh) cells, germinal centers, and the memory responses involved in prime and boost immunizations. We found that after prime immunization, compared with HBsAg, gp120 induced higher frequencies of Tfh cells and programmed death (PD)-1+ T cells, greater major histocompatibility complex II expression on B cells, comparable activated B cells, but weaker germinal center (GC) reactions and memory B cell responses in the draining lymph nodes, accompanied by slower antibody recall responses and poor immune memory responses. The above results suggested that more PD-1+ T cells arising in primary immunization may serve as major contributors to the slow antibody recall response elicited by HIV-1 Env.
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Affiliation(s)
- Li Yuan
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Wen-Jiang Chen
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Jia-Ye Wang
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China.,Heilongjiang Provincial Key Laboratory of Infection and Immunity, Key Laboratory of Pathogen Biology, Harbin, 150081, China.,Wu Lien-Teh Institute, Harbin Medical University, Harbin, 150081, China
| | - Yan Li
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China.,Heilongjiang Provincial Key Laboratory of Infection and Immunity, Key Laboratory of Pathogen Biology, Harbin, 150081, China.,Wu Lien-Teh Institute, Harbin Medical University, Harbin, 150081, China
| | - Dan Tian
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Ming-Xia Wang
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Hao-Tong Yu
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Ying-Chu Xu
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China
| | - Di Li
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China.,Heilongjiang Provincial Key Laboratory of Infection and Immunity, Key Laboratory of Pathogen Biology, Harbin, 150081, China.,Wu Lien-Teh Institute, Harbin Medical University, Harbin, 150081, China
| | - Min Zhuang
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China.,Heilongjiang Provincial Key Laboratory of Infection and Immunity, Key Laboratory of Pathogen Biology, Harbin, 150081, China.,Wu Lien-Teh Institute, Harbin Medical University, Harbin, 150081, China
| | - Hong Ling
- Department of Microbiology, Harbin Medical University, Harbin, 150081, China. .,Heilongjiang Provincial Key Laboratory of Infection and Immunity, Key Laboratory of Pathogen Biology, Harbin, 150081, China. .,Wu Lien-Teh Institute, Harbin Medical University, Harbin, 150081, China. .,Department of Immunology, Harbin Medical University, Harbin, 150081, China.
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157
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Falcão AM, van Bruggen D, Marques S, Meijer M, Jäkel S, Agirre E, Samudyata, Floriddia EM, Vanichkina DP, Ffrench-Constant C, Williams A, Guerreiro-Cacais AO, Castelo-Branco G. Disease-specific oligodendrocyte lineage cells arise in multiple sclerosis. Nat Med 2018; 24:1837-1844. [PMID: 30420755 PMCID: PMC6544508 DOI: 10.1038/s41591-018-0236-y] [Citation(s) in RCA: 290] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 09/14/2018] [Indexed: 11/22/2022]
Abstract
Multiple sclerosis (MS) is characterized by an immune system attack targeting myelin, which is produced by oligodendrocytes (OLs). We performed single-cell transcriptomic analysis of OL lineage cells from the spinal cord of mice induced with experimental autoimmune encephalomyelitis (EAE), which mimics several aspects of MS. We found unique OLs and OL precursor cells (OPCs) in EAE and uncovered several genes specifically alternatively spliced in these cells. Surprisingly, EAE-specific OL lineage populations expressed genes involved in antigen processing and presentation via major histocompatibility complex class I and II (MHC-I and -II), and in immunoprotection, suggesting alternative functions of these cells in a disease context. Importantly, we found that disease-specific oligodendroglia are also present in human MS brains and that a substantial number of genes known to be susceptibility genes for MS, so far mainly associated with immune cells, are expressed in the OL lineage cells. Finally, we demonstrate that OPCs can phagocytose and that MHC-II-expressing OPCs can activate memory and effector CD4-positive T cells. Our results suggest that OLs and OPCs are not passive targets but instead active immunomodulators in MS. The disease-specific OL lineage cells, for which we identify several biomarkers, may represent novel direct targets for immunomodulatory therapeutic approaches in MS.
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Affiliation(s)
- Ana Mendanha Falcão
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden.
| | - David van Bruggen
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Sueli Marques
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Mandy Meijer
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Sarah Jäkel
- MRC Centre for Regenerative Medicine and MS Society Edinburgh Centre, Edinburgh bioQuarter, University of Edinburgh, Edinburgh, UK
| | - Eneritz Agirre
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Samudyata
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Elisa M Floriddia
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden
| | - Darya P Vanichkina
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, New South Wales , Australia
- Institute for Molecular Bioscience, University of Queensland, St Lucia, Queensland, Australia
| | - Charles Ffrench-Constant
- MRC Centre for Regenerative Medicine and MS Society Edinburgh Centre, Edinburgh bioQuarter, University of Edinburgh, Edinburgh, UK
| | - Anna Williams
- MRC Centre for Regenerative Medicine and MS Society Edinburgh Centre, Edinburgh bioQuarter, University of Edinburgh, Edinburgh, UK
| | | | - Gonçalo Castelo-Branco
- Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Biomedicum, Stockholm, Sweden.
- Ming Wai Lau Centre for Reparative Medicine, Stockholm node, Karolinska Institutet, Stockholm, Sweden.
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158
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Pereira MS, Alves I, Vicente M, Campar A, Silva MC, Padrão NA, Pinto V, Fernandes Â, Dias AM, Pinho SS. Glycans as Key Checkpoints of T Cell Activity and Function. Front Immunol 2018; 9:2754. [PMID: 30538706 PMCID: PMC6277680 DOI: 10.3389/fimmu.2018.02754] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/08/2018] [Indexed: 12/20/2022] Open
Abstract
The immune system is highly controlled and fine-tuned by glycosylation, through the addition of a diversity of carbohydrates structures (glycans) to virtually all immune cell receptors. Despite a relative backlog in understanding the importance of glycans in the immune system, due to its inherent complexity, remarkable findings have been highlighting the essential contributions of glycosylation in the regulation of both innate and adaptive immune responses with important implications in the pathogenesis of major diseases such as autoimmunity and cancer. Glycans are implicated in fundamental cellular and molecular processes that regulate both stimulatory and inhibitory immune pathways. Besides being actively involved in pathogen recognition through interaction with glycan-binding proteins (such as C-type lectins), glycans have been also shown to regulate key pathophysiological steps within T cell biology such as T cell development and thymocyte selection; T cell activity and signaling as well as T cell differentiation and proliferation. These effects of glycans in T cells functions highlight their importance as determinants of either self-tolerance or T cell hyper-responsiveness which ultimately might be implicated in the creation of tolerogenic pathways in cancer or loss of immunological tolerance in autoimmunity. This review discusses how specific glycans (with a focus on N-linked glycans) act as regulators of T cell biology and their implications in disease.
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Affiliation(s)
- Márcia S Pereira
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Institute of Biomedical Sciences of Abel Salazar, University of Porto Porto, Portugal
| | - Inês Alves
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Medical Faculty, University of Porto Porto, Portugal
| | - Manuel Vicente
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Institute of Biomedical Sciences of Abel Salazar, University of Porto Porto, Portugal
| | - Ana Campar
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Institute of Biomedical Sciences of Abel Salazar, University of Porto Porto, Portugal.,Centro Hospitalar do Porto Porto, Portugal
| | - Mariana C Silva
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal
| | - Nuno A Padrão
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Medical Faculty, University of Porto Porto, Portugal
| | - Vanda Pinto
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal
| | - Ângela Fernandes
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal
| | - Ana M Dias
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal
| | - Salomé S Pinho
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP) Porto, Portugal.,Institute for Research and Innovation in Health (I3S) Porto, Portugal.,Medical Faculty, University of Porto Porto, Portugal
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159
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Dias AM, Pereira MS, Padrão NA, Alves I, Marcos-Pinto R, Lago P, Pinho SS. Glycans as critical regulators of gut immunity in homeostasis and disease. Cell Immunol 2018; 333:9-18. [DOI: 10.1016/j.cellimm.2018.07.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 07/04/2018] [Accepted: 07/17/2018] [Indexed: 12/19/2022]
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160
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Nelson CS, Herold BC, Permar SR. A new era in cytomegalovirus vaccinology: considerations for rational design of next-generation vaccines to prevent congenital cytomegalovirus infection. NPJ Vaccines 2018; 3:38. [PMID: 30275984 PMCID: PMC6148244 DOI: 10.1038/s41541-018-0074-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/07/2018] [Accepted: 07/11/2018] [Indexed: 02/07/2023] Open
Abstract
Human cytomegalovirus (HCMV), a member of the beta-herpesvirus family, is the most common cause of congenital infection worldwide as well as an important cause of morbidity in transplant recipients and immunosuppressed individuals. An estimated 1 in 150 infants are infected with HCMV at birth, which can result in lifelong, debilitating neurologic sequelae including microcephaly, sensorineural hearing loss, and cognitive impairment. Natural maternal immunity to HCMV decreases the frequency of reinfection and reduces risk of congenital transmission but does not completely protect against neonatal disease. Thus, a vaccine to reduce the incidence and severity of infant infection is a public health priority. A variety of candidate HCMV vaccine approaches have been tried previously, including live-attenuated viruses, glycoprotein subunit formulations, viral vectors, and single/bivalent DNA plasmids, but all have failed to reach target endpoints in clinical trials. Nevertheless, there is a great deal to be learned from the successes and failures of the HCMV vaccine field (both congenital and transplant-associated), as well as from vaccine development efforts for other herpesvirus pathogens including herpes simplex virus 1 and 2, varicella zoster virus, and Epstein-Barr virus. Here, we review those successes and failures, evaluating recent cutting-edge discoveries that have shaped the HCMV vaccine field and identifying topics of critical importance for future investigation. These considerations will inform rational design and evaluation of next-generation vaccines to prevent HCMV-associated congenital infection and disease.
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Affiliation(s)
- Cody S. Nelson
- Human Vaccine Institute, Duke University Medical Center, Durham, NC USA
| | - Betsy C. Herold
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY USA
| | - Sallie R. Permar
- Human Vaccine Institute, Duke University Medical Center, Durham, NC USA
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161
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Abstract
Glycosylation is one of the most prevalent posttranslational modifications that profoundly affects the structure and functions of proteins in a wide variety of biological recognition events. However, the structural complexity and heterogeneity of glycoproteins, usually resulting from the variations of glycan components and/or the sites of glycosylation, often complicates detailed structure-function relationship studies and hampers the therapeutic applications of glycoproteins. To address these challenges, various chemical and biological strategies have been developed for producing glycan-defined homogeneous glycoproteins. This review highlights recent advances in the development of chemoenzymatic methods for synthesizing homogeneous glycoproteins, including the generation of various glycosynthases for synthetic purposes, endoglycosidase-catalyzed glycoprotein synthesis and glycan remodeling, and direct enzymatic glycosylation of polypeptides and proteins. The scope, limitation, and future directions of each method are discussed.
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Affiliation(s)
- Chao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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162
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Cha JH, Yang WH, Xia W, Wei Y, Chan LC, Lim SO, Li CW, Kim T, Chang SS, Lee HH, Hsu JL, Wang HL, Kuo CW, Chang WC, Hadad S, Purdie CA, McCoy AM, Cai S, Tu Y, Litton JK, Mittendorf EA, Moulder SL, Symmans WF, Thompson AM, Piwnica-Worms H, Chen CH, Khoo KH, Hung MC. Metformin Promotes Antitumor Immunity via Endoplasmic-Reticulum-Associated Degradation of PD-L1. Mol Cell 2018; 71:606-620.e7. [PMID: 30118680 PMCID: PMC6786495 DOI: 10.1016/j.molcel.2018.07.030] [Citation(s) in RCA: 465] [Impact Index Per Article: 77.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/26/2018] [Accepted: 07/23/2018] [Indexed: 11/17/2022]
Abstract
Metformin has been reported to possess antitumor activity and maintain high cytotoxic T lymphocyte (CTL) immune surveillance. However, the functions and detailed mechanisms of metformin's role in cancer immunity are not fully understood. Here, we show that metformin increases CTL activity by reducing the stability and membrane localization of programmed death ligand-1 (PD-L1). Furthermore, we discover that AMP-activated protein kinase (AMPK) activated by metformin directly phosphorylates S195 of PD-L1. S195 phosphorylation induces abnormal PD-L1 glycosylation, resulting in its ER accumulation and ER-associated protein degradation (ERAD). Consistently, tumor tissues from metformin-treated breast cancer patients exhibit reduced PD-L1 levels with AMPK activation. Blocking the inhibitory signal of PD-L1 by metformin enhances CTL activity against cancer cells. Our findings identify a new regulatory mechanism of PD-L1 expression through the ERAD pathway and suggest that the metformin-CTLA4 blockade combination has the potential to increase the efficacy of immunotherapy.
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MESH Headings
- AMP-Activated Protein Kinases/genetics
- AMP-Activated Protein Kinases/immunology
- Animals
- Antineoplastic Agents/pharmacology
- B7-H1 Antigen/genetics
- B7-H1 Antigen/immunology
- CTLA-4 Antigen/genetics
- CTLA-4 Antigen/immunology
- Cell Line, Tumor
- Endoplasmic Reticulum/drug effects
- Endoplasmic Reticulum/genetics
- Endoplasmic Reticulum/metabolism
- Endoplasmic Reticulum-Associated Degradation
- Epithelial Cells/cytology
- Epithelial Cells/drug effects
- Epithelial Cells/immunology
- Female
- Gene Expression Regulation, Neoplastic
- Glycosylation
- Humans
- Hypoglycemic Agents/pharmacology
- Mammary Glands, Human/cytology
- Mammary Glands, Human/drug effects
- Mammary Glands, Human/immunology
- Melanoma, Experimental/drug therapy
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/pathology
- Metformin/pharmacology
- Mice
- Mice, Inbred NOD
- Phosphorylation
- Serine/metabolism
- T-Lymphocytes, Cytotoxic/cytology
- T-Lymphocytes, Cytotoxic/drug effects
- T-Lymphocytes, Cytotoxic/immunology
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Affiliation(s)
- Jong-Ho Cha
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Wen-Hao Yang
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Weiya Xia
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yongkun Wei
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Li-Chuan Chan
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Seung-Oe Lim
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Chia-Wei Li
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Taewan Kim
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shih-Shin Chang
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Heng-Huan Lee
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jennifer L Hsu
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan; Department of Biotechnology, Asia University, Taichung 413, Taiwan
| | - Hung-Ling Wang
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan
| | - Chu-Wei Kuo
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Wei-Chao Chang
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan; Genomics Research Center, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Sirwan Hadad
- Department of Surgery, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Colin A Purdie
- Department of Pathology, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
| | - Aaron M McCoy
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shirong Cai
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yizheng Tu
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jennifer K Litton
- Department of Breast Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Elizabeth A Mittendorf
- Department of Breast Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Stacy L Moulder
- Department of Breast Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - William F Symmans
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alastair M Thompson
- Department of Breast Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Helen Piwnica-Worms
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Chung-Hsuan Chen
- Genomics Research Center, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Kay-Hooi Khoo
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas Health Science Center, Houston, TX 77030, USA; Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan; Department of Biotechnology, Asia University, Taichung 413, Taiwan.
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163
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Leemans A, Boeren M, Van der Gucht W, Pintelon I, Roose K, Schepens B, Saelens X, Bailey D, Martinet W, Caljon G, Maes L, Cos P, Delputte P. Removal of the N-Glycosylation Sequon at Position N116 Located in p27 of the Respiratory Syncytial Virus Fusion Protein Elicits Enhanced Antibody Responses after DNA Immunization. Viruses 2018; 10:E426. [PMID: 30110893 PMCID: PMC6115940 DOI: 10.3390/v10080426] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/08/2018] [Accepted: 08/13/2018] [Indexed: 11/16/2022] Open
Abstract
Prevention of severe lower respiratory tract infections in infants caused by the human respiratory syncytial virus (hRSV) remains a major public health priority. Currently, the major focus of vaccine development relies on the RSV fusion (F) protein since it is the main target protein for neutralizing antibodies induced by natural infection. The protein conserves 5 N-glycosylation sites, two of which are located in the F2 subunit (N27 and N70), one in the F1 subunit (N500) and two in the p27 peptide (N116 and N126). To study the influence of the loss of one or more N-glycosylation sites on RSV F immunogenicity, BALB/c mice were immunized with plasmids encoding RSV F glycomutants. In comparison with F WT DNA immunized mice, higher neutralizing titres were observed following immunization with F N116Q. Moreover, RSV A2-K-line19F challenge of mice that had been immunized with mutant F N116Q DNA was associated with lower RSV RNA levels compared with those in challenged WT F DNA immunized animals. Since p27 is assumed to be post-translationally released after cleavage and thus not present on the mature RSV F protein, it remains to be elucidated how deletion of this glycan can contribute to enhanced antibody responses and protection upon challenge. These findings provide new insights to improve the immunogenicity of RSV F in potential vaccine candidates.
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MESH Headings
- Animals
- Antibodies, Neutralizing/biosynthesis
- Antibodies, Neutralizing/blood
- Antibodies, Viral/biosynthesis
- Antibodies, Viral/blood
- Female
- Glycosylation
- Humans
- Hydrolysis
- Immunization
- Mice
- Mice, Inbred BALB C
- Models, Molecular
- Mutation
- Plasmids/administration & dosage
- Plasmids/genetics
- Plasmids/immunology
- Protein Engineering
- Protein Subunits/administration & dosage
- Protein Subunits/genetics
- Protein Subunits/immunology
- Respiratory Syncytial Virus Infections/immunology
- Respiratory Syncytial Virus Infections/prevention & control
- Respiratory Syncytial Virus Infections/virology
- Respiratory Syncytial Virus Vaccines/administration & dosage
- Respiratory Syncytial Virus Vaccines/genetics
- Respiratory Syncytial Virus Vaccines/immunology
- Respiratory Syncytial Virus, Human/drug effects
- Respiratory Syncytial Virus, Human/genetics
- Respiratory Syncytial Virus, Human/immunology
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/genetics
- Vaccines, DNA/immunology
- Viral Fusion Proteins/administration & dosage
- Viral Fusion Proteins/genetics
- Viral Fusion Proteins/immunology
- Viral Load/drug effects
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Affiliation(s)
- Annelies Leemans
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Marlies Boeren
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Winke Van der Gucht
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Kenny Roose
- Medical Biotechnology Centre, VIB, B-9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
| | - Bert Schepens
- Medical Biotechnology Centre, VIB, B-9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
| | - Xavier Saelens
- Medical Biotechnology Centre, VIB, B-9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
| | | | - Wim Martinet
- Laboratory of Physiopharmacology, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
| | - Peter Delputte
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, B-2610 Antwerp, Belgium.
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164
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Jaroentomeechai T, Stark JC, Natarajan A, Glasscock CJ, Yates LE, Hsu KJ, Mrksich M, Jewett MC, DeLisa MP. Single-pot glycoprotein biosynthesis using a cell-free transcription-translation system enriched with glycosylation machinery. Nat Commun 2018; 9:2686. [PMID: 30002445 PMCID: PMC6043479 DOI: 10.1038/s41467-018-05110-x] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 06/06/2018] [Indexed: 12/13/2022] Open
Abstract
The emerging discipline of bacterial glycoengineering has made it possible to produce designer glycans and glycoconjugates for use as vaccines and therapeutics. Unfortunately, cell-based production of homogeneous glycoproteins remains a significant challenge due to cell viability constraints and the inability to control glycosylation components at precise ratios in vivo. To address these challenges, we describe a novel cell-free glycoprotein synthesis (CFGpS) technology that seamlessly integrates protein biosynthesis with asparagine-linked protein glycosylation. This technology leverages a glyco-optimized Escherichia coli strain to source cell extracts that are selectively enriched with glycosylation components, including oligosaccharyltransferases (OSTs) and lipid-linked oligosaccharides (LLOs). The resulting extracts enable a one-pot reaction scheme for efficient and site-specific glycosylation of target proteins. The CFGpS platform is highly modular, allowing the use of multiple distinct OSTs and structurally diverse LLOs. As such, we anticipate CFGpS will facilitate fundamental understanding in glycoscience and make possible applications in on demand biomanufacturing of glycoproteins. The ability to produce homogeneous glycoproteins is expected to advance fundamental understanding in glycoscience, but current in vivo-based production systems have several limitations. Here, the authors develop an E. coli extract-based one-pot system for customized production of N-linked glycoproteins.
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Affiliation(s)
- Thapakorn Jaroentomeechai
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Jessica C Stark
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA.,Chemistry of Life Processes Institute, 2170 Campus Drive, Evanston, IL, 60208-3120, USA.,Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3120, USA
| | - Aravind Natarajan
- Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA
| | - Cameron J Glasscock
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Laura E Yates
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Karen J Hsu
- Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Rd Technological Institute B224, Evanston, IL, 60208-3120, USA
| | - Milan Mrksich
- Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3120, USA.,Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.,Department of Cell and Molecular Biology, Northwestern University, Chicago, IL, 60611, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Michael C Jewett
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA. .,Chemistry of Life Processes Institute, 2170 Campus Drive, Evanston, IL, 60208-3120, USA. .,Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208-3120, USA.
| | - Matthew P DeLisa
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA. .,Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA.
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165
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Xiao H, Chen W, Smeekens JM, Wu R. An enrichment method based on synergistic and reversible covalent interactions for large-scale analysis of glycoproteins. Nat Commun 2018; 9:1692. [PMID: 29703890 PMCID: PMC5923262 DOI: 10.1038/s41467-018-04081-3] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 03/28/2018] [Indexed: 01/28/2023] Open
Abstract
Protein glycosylation is ubiquitous in biological systems and essential for cell survival. However, the heterogeneity of glycans and the low abundance of many glycoproteins complicate their global analysis. Chemical methods based on reversible covalent interactions between boronic acid and glycans have great potential to enrich glycopeptides, but the binding affinity is typically not strong enough to capture low-abundance species. Here, we develop a strategy using dendrimer-conjugated benzoboroxole to enhance the glycopeptide enrichment. We test the performance of several boronic acid derivatives, showing that benzoboroxole markedly increases glycopeptide coverage from human cell lysates. The enrichment is further improved by conjugating benzoboroxole to a dendrimer, which enables synergistic benzoboroxole–glycan interactions. This robust and simple method is highly effective for sensitive glycoproteomics analysis, especially capturing low-abundance glycopeptides. Importantly, the enriched glycopeptides remain intact, making the current method compatible with mass-spectrometry-based approaches to identify glycosylation sites and glycan structures. Understanding the functions of protein glycosylation critically depends on methods to efficiently enrich glycoproteins from complex samples. Here, the authors develop a strategy using dendrimer-conjugated benzoboroxole to enhance glycopeptide enrichment, providing the basis for more comprehensive glycoprotein analyses.
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Affiliation(s)
- Haopeng Xiao
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Weixuan Chen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Johanna M Smeekens
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Ronghu Wu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA. .,The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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166
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Martínez-Sáez N, Peregrina JM, Corzana F. Principles of mucin structure: implications for the rational design of cancer vaccines derived from MUC1-glycopeptides. Chem Soc Rev 2018; 46:7154-7175. [PMID: 29022615 DOI: 10.1039/c6cs00858e] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cancer is currently one of the world's most serious public health problems. Significant efforts are being made to develop new strategies that can eradicate tumours selectively without detrimental effects to healthy cells. One promising approach is focused on the design of vaccines that contain partially glycosylated mucins in their formulation. Although some of these vaccines are in clinical trials, a lack of knowledge about the molecular basis that governs the antigen presentation, and the interactions between antigens and the elicited antibodies has limited their success thus far. This review focuses on the most significant milestones achieved to date in the conformational analysis of tumour-associated MUC1 derivatives both in solution and bound to antibodies. The effect that the carbohydrate scaffold has on the peptide backbone structure and the role of the sugar in molecular recognition by antibodies are emphasised. The outcomes summarised in this review may be a useful guide to develop new antigens for the design of cancer vaccines in the near future.
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Affiliation(s)
- Nuria Martínez-Sáez
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño, Spain.
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167
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Zhang P, Huang K, Zhang B, Dunn DW, Chen D, Li F, Qi X, Guo S, Li B. High polymorphism in MHC-DRB genes in golden snub-nosed monkeys reveals balancing selection in small, isolated populations. BMC Evol Biol 2018. [PMID: 29534675 PMCID: PMC5851093 DOI: 10.1186/s12862-018-1148-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background Maintaining variation in immune genes, such as those of the major histocompatibility complex (MHC), is important for individuals in small, isolated populations to resist pathogens and parasites. The golden snub-nosed monkey (Rhinopithecus roxellana), an endangered primate endemic to China, has experienced a rapid reduction in numbers and severe population fragmentation over recent years. For this study, we measured the DRB diversity among 122 monkeys from three populations in the Qinling Mountains, and estimated the relative importance of different agents of selection in maintaining variation of DRB genes. Results We identified a total of 19 DRB sequences, in which five alleles were novel. We found high DRB variation in R. roxellana and three branches of evidence suggesting that balancing selection has contributed to maintaining MHC polymorphism over the long term in this species: i) different patterns of both genetic diversity and population differentiation were detected at MHC and neutral markers; ii) an excess of non-synonymous substitutions compared to synonymous substitutions at antigen binding sites, and maximum-likelihood-based random-site models, showed significant positive selection; and iii) phylogenetic analyses revealed a pattern of trans-species evolution for DRB genes. Conclusions High levels of DRB diversity in these R. roxellana populations may reflect strong selection pressure in this species. Patterns of genetic diversity and population differentiation, positive selection, as well as trans-species evolution, suggest that pathogen-mediated balancing selection has contributed to maintaining MHC polymorphism in R. roxellana over the long term. This study furthers our understanding of the role pathogen-mediated balancing selection has in maintaining variation in MHC genes in small and fragmented populations of free-ranging vertebrates. Electronic supplementary material The online version of this article (10.1186/s12862-018-1148-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pei Zhang
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Kang Huang
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Bingyi Zhang
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Derek W Dunn
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Dan Chen
- Middle School Affiliated to Northwest University, Xi'an, China
| | - Fan Li
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Xiaoguang Qi
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Songtao Guo
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Baoguo Li
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China. .,Xi'an Branch of Chinese Academy of Science, Xi'an, China.
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168
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169
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Manwar Hussain MR, Iqbal Z, Qazi WM, Hoessli DC. Charge and Polarity Preferences for N-Glycosylation: A Genome-Wide In Silico Study and Its Implications Regarding Constitutive Proliferation and Adhesion of Carcinoma Cells. Front Oncol 2018. [PMID: 29541627 PMCID: PMC5835500 DOI: 10.3389/fonc.2018.00029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The structural and functional diversity of the human proteome is mediated by N- and O-linked glycosylations that define the individual properties of extracellular and membrane-associated proteins. In this study, we utilized different computational tools to perform in silico based genome-wide mapping of 1,117 human proteins and unravel the contribution of both penultimate and vicinal amino acids for the asparagine-based, site-specific N-glycosylation. Our results correlate the non-canonical involvement of charge and polarity environment of classified amino acids (designated as L, O, A, P, and N groups) in the N-glycosylation process, as validated by NetNGlyc predictions, and 130 literature-reported human proteins. From our results, particular charge and polarity combinations of non-polar aliphatic, acidic, basic, and aromatic polar side chain environment of both penultimate and vicinal amino acids were found to promote the N-glycosylation process. However, the alteration in side-chain charge and polarity environment of genetic variants, particularly in the vicinity of Asn-containing epitope, may induce constitutive glycosylation (e.g., aberrant glycosylation at preferred and non-preferred sites) of membrane proteins causing constitutive proliferation and triggering epithelial-to-mesenchymal transition. The current genome-wide mapping of 1,117 proteins (2,909 asparagine residues) was used to explore charge- and polarity-based mechanistic constraints in N-glycosylation, and discuss alterations of the neoplastic phenotype that can be ascribed to N-glycosylation at preferred and non-preferred sites.
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Affiliation(s)
- Muhammad Ramzan Manwar Hussain
- Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics (CAS), Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zeeshan Iqbal
- Institute of Molecular Sciences & Bioinformatics, Lahore, Pakistan.,Department of Physics, GC University Lahore, Lahore, Pakistan
| | - Wajahat M Qazi
- Center for Intelligent Machines and Robotics, Department of Computer Science, COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Daniel C Hoessli
- Institute of Molecular Sciences & Bioinformatics, Lahore, Pakistan.,Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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170
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Mahon BP, Ambadapadi S, Yaron JR, Lomelino CL, Pinard MA, Keinan S, Kurnikov I, Macaulay C, Zhang L, Reeves W, McFadden G, Tibbetts S, McKenna R, Lucas AR. Crystal Structure of Cleaved Serp-1, a Myxomavirus-Derived Immune Modulating Serpin: Structural Design of Serpin Reactive Center Loop Peptides with Improved Therapeutic Function. Biochemistry 2018; 57:1096-1107. [PMID: 29227673 DOI: 10.1021/acs.biochem.7b01171] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Myxomavirus-derived protein Serp-1 has potent anti-inflammatory activity in models of vasculitis, lupus, viral sepsis, and transplant. Serp-1 has also been tested successfully in a Phase IIa clinical trial in unstable angina, representing a "first-in-class" therapeutic. Recently, peptides derived from the reactive center loop (RCL) have been developed as stand-alone therapeutics for reducing vasculitis and improving survival in MHV68-infected mice. However, both Serp-1 and the RCL peptides lose activity in MHV68-infected mice after antibiotic suppression of intestinal microbiota. Here, we utilize a structure-guided approach to design and test a series of next-generation RCL peptides with improved therapeutic potential that is not reduced when the peptides are combined with antibiotic treatments. The crystal structure of cleaved Serp-1 was determined to 2.5 Å resolution and reveals a classical serpin structure with potential for serpin-derived RCL peptides to bind and inhibit mammalian serpins, plasminogen activator inhibitor 1 (PAI-1), anti-thrombin III (ATIII), and α-1 antitrypsin (A1AT), and target proteases. Using in silico modeling of the Serp-1 RCL peptide, S-7, we designed several modified RCL peptides that were predicted to have stronger interactions with human serpins because of the larger number of stabilizing hydrogen bonds. Two of these peptides (MPS7-8 and -9) displayed extended activity, improving survival where activity was previously lost in antibiotic-treated MHV68-infected mice (P < 0.0001). Mass spectrometry and kinetic assays suggest interaction of the peptides with ATIII, A1AT, and target proteases in mouse and human plasma. In summary, we present the next step toward the development of a promising new class of anti-inflammatory serpin-based therapeutics.
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Affiliation(s)
- Brian P Mahon
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , Bethesda, Maryland 20892, United States.,Department of Biochemistry and Molecular Biology, University of Florida College of Medicine , Gainesville, Florida 32610-0277, United States
| | - Sriram Ambadapadi
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida , Gainesville, Florida 32610-0277, United States
| | | | - Carrie L Lomelino
- Department of Biochemistry and Molecular Biology, University of Florida College of Medicine , Gainesville, Florida 32610-0277, United States
| | - Melissa A Pinard
- Department of Biochemistry and Molecular Biology, University of Florida College of Medicine , Gainesville, Florida 32610-0277, United States
| | - Shahar Keinan
- Cloud Pharmaceuticals , 6 Davis Drive, Research Triangle Park, North Carolina 27709, United States
| | - Igor Kurnikov
- Cloud Pharmaceuticals , 6 Davis Drive, Research Triangle Park, North Carolina 27709, United States
| | | | | | - Westley Reeves
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida , Gainesville, Florida 32610-0277, United States
| | | | | | - Robert McKenna
- Department of Biochemistry and Molecular Biology, University of Florida College of Medicine , Gainesville, Florida 32610-0277, United States
| | - Alexandra R Lucas
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida , Gainesville, Florida 32610-0277, United States.,Saint Joseph's Hospital, Dignity Health , Phoenix, Arizona 85013, United States
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171
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Reiter K, Polzer H, Krupka C, Maiser A, Vick B, Rothenberg-Thurley M, Metzeler KH, Dörfel D, Salih HR, Jung G, Nößner E, Jeremias I, Hiddemann W, Leonhardt H, Spiekermann K, Subklewe M, Greif PA. Tyrosine kinase inhibition increases the cell surface localization of FLT3-ITD and enhances FLT3-directed immunotherapy of acute myeloid leukemia. Leukemia 2018; 32:313-322. [PMID: 28895560 PMCID: PMC5808080 DOI: 10.1038/leu.2017.257] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/14/2017] [Accepted: 08/01/2017] [Indexed: 01/13/2023]
Abstract
The fms-related tyrosine kinase 3 (FLT3) receptor has been extensively studied over the past two decades with regard to oncogenic alterations that do not only serve as prognostic markers but also as therapeutic targets in acute myeloid leukemia (AML). Internal tandem duplications (ITDs) became of special interest in this setting as they are associated with unfavorable prognosis. Because of sequence-dependent protein conformational changes FLT3-ITD tends to autophosphorylate and displays a constitutive intracellular localization. Here, we analyzed the effect of tyrosine kinase inhibitors (TKIs) on the localization of the FLT3 receptor and its mutants. TKI treatment increased the surface expression through upregulation of FLT3 and glycosylation of FLT3-ITD and FLT3-D835Y mutants. In T cell-mediated cytotoxicity (TCMC) assays, using a bispecific FLT3 × CD3 antibody construct, the combination with TKI treatment increased TCMC in the FLT3-ITD-positive AML cell lines MOLM-13 and MV4-11, patient-derived xenograft cells and primary patient samples. Our findings provide the basis for rational combination of TKI and FLT3-directed immunotherapy with potential benefit for FLT3-ITD-positive AML patients.
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Affiliation(s)
- K Reiter
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - H Polzer
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - C Krupka
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- Department of Translational Cancer Immunology, Gene Center Munich, LMU Munich, Munich, Germany
| | - A Maiser
- Department of BioIogy II, LMU Munich, Munich, Germany
| | - B Vick
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- Department of Gene Vectors, Helmholtz Zentrum München, German Research center for Enviromental Health, Munich, Germany
| | - M Rothenberg-Thurley
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - K H Metzeler
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - D Dörfel
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmology, Eberhard Karls Universität Tübingen, University Hospital Tübingen, Tübingen, Germany
- Clinical Collaboration Unit Translational Immunology, German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), partner site Tübingen, Tübingen, Germany
| | - H R Salih
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmology, Eberhard Karls Universität Tübingen, University Hospital Tübingen, Tübingen, Germany
- Clinical Collaboration Unit Translational Immunology, German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), partner site Tübingen, Tübingen, Germany
| | - G Jung
- Department of Immunology, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - E Nößner
- Immunoanalytics-Tissue control of Immunocytes, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - I Jeremias
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- Department of Gene Vectors, Helmholtz Zentrum München, German Research center for Enviromental Health, Munich, Germany
- Department of Pediatrics, Dr von Hauner Children’s Hospital, LMU Munich, Munich, Germany
| | - W Hiddemann
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - H Leonhardt
- Department of BioIogy II, LMU Munich, Munich, Germany
| | - K Spiekermann
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Subklewe
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Translational Cancer Immunology, Gene Center Munich, LMU Munich, Munich, Germany
| | - P A Greif
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
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172
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Liang W, Mao S, Sun S, Li M, Li Z, Yu R, Ma T, Gu J, Zhang J, Taniguchi N, Li W. Core Fucosylation of the T Cell Receptor Is Required for T Cell Activation. Front Immunol 2018; 9:78. [PMID: 29434598 PMCID: PMC5796888 DOI: 10.3389/fimmu.2018.00078] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/11/2018] [Indexed: 12/05/2022] Open
Abstract
CD4+ T cell activation promotes the pathogenic process of systemic lupus erythematosus (SLE). T cell receptor (TCR) complex are highly core fucosylated glycoproteins, which play important roles in T cell activation. In this study, we found that the core fucosylation of CD4+ T cells was significantly increased in SLE patients. Loss of core fucosyltransferase (Fut8), the sole enzyme for catalyzing the core fucosylation of N-glycan, significantly reduced CD4+ T cell activation and ameliorated the experimental autoimmune encephalomyelitis-induced syndrome in Fut8−/− mice. T cell activation with OVA323–339 loaded major histocompatibility complex II (pMHC-II) on B cell was dramatically attenuated in Fut8−/−OT-II CD4+ T cells compared with Fut8+/+OT-II CD4+ T cells. Moreover, the phosphorylation of ZAP-70 was significantly reduced in Fut8+/+OT-II CD4+ T cells by the treatment of fucosidase. Our results suggest that core fucosylation is required for efficient TCR–pMHC-II contacts in CD4+ T cell activation, and hyper core fucosylation may serve as a potential novel biomarker in the sera from SLE patients.
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Affiliation(s)
- Wei Liang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Shanshan Mao
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Shijie Sun
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ming Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Zhi Li
- Clinical Laboratory, Dalian Municipal Central Hospital, Dalian, China
| | - Rui Yu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Tonghui Ma
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Jianguo Gu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Jianing Zhang
- School of Life Science and Medicine, Dalian University of Technology, Panjin, China
| | - Naoyuki Taniguchi
- Systems Glycobiology Research Group, Advanced Science Institute, RIKEN, Saitama, Japan
| | - Wenzhe Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
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173
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Strutton B, Jaffé SR, Pandhal J, Wright PC. Producing a glycosylating Escherichia coli cell factory: The placement of the bacterial oligosaccharyl transferase pglB onto the genome. Biochem Biophys Res Commun 2018; 495:686-692. [DOI: 10.1016/j.bbrc.2017.11.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/03/2017] [Indexed: 10/18/2022]
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174
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Faisal ARM, Imtiaz SH, Zerin T, Rahman T, Shekhar HU. Computer aided epitope design as a peptide vaccine component against Lassa virus. Bioinformation 2017; 13:417-429. [PMID: 29379262 PMCID: PMC5767920 DOI: 10.6026/97320630013417] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/05/2017] [Accepted: 12/05/2017] [Indexed: 12/16/2022] Open
Abstract
Lassa virus (LASV) is an arena virus causing hemorrhagic fever and it is endemic in several regions of West Africa. The disease-causing virus records high mortality rate in endemic regions due to lack of appropriate treatment and prevention strategies. Therefore, it is of interest to design and develop viable vaccine components against the virus. We used the Lassa virus envelope glyco-proteins as a vaccine target to identify linear peptides as potential epitopes with immunogenic properties by computer aided epitope prediction tools. We report a T-cell epitope 'LLGTFTWTL' and a B-cell epitope 'AELKCFGNTAVAKCNE' with predicted potential immunogenicity for further in vivo and in vitro consideration.
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Affiliation(s)
- Ar-Rafi Md. Faisal
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Syed Hassan Imtiaz
- Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Tasnim Zerin
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Tania Rahman
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
| | - Hossain Uddin Shekhar
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka-1000, Bangladesh
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175
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Sangabathuni S, Murthy RV, Gade M, Bavireddi H, Toraskar S, Sonar MV, Ganesh KN, Kikkeri R. Modeling Glyco-Collagen Conjugates Using a Host-Guest Strategy To Alter Phenotypic Cell Migration and in Vivo Wound Healing. ACS NANO 2017; 11:11969-11977. [PMID: 29077384 DOI: 10.1021/acsnano.7b01789] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The constructs and study of combinatorial libraries of structurally defined homologous extracellular matrix (ECM) glycopeptides can significantly accelerate the identification of cell surface markers involved in a variety of physiological and pathological processes. Herein, we present a simple and reliable host-guest approach to design a high-throughput glyco-collagen library to modulate the primary and secondary cell line migration process. 4-Amidoadamantyl-substituted collagen peptides and β-cyclodextrin appended with mono- or disaccharides were used to construct self-assembled glyco-collagen conjugates (GCCs), which were found to be thermally stable, with triple-helix structures and nanoneedles-like morphologies that altered cell migration processes. We also investigated the glycopeptide's mechanisms of action, which included interactions with integrins and cell signaling kinases. Finally, we report murine wound models to demonstrate the real-time application of GCCs. As a result of our observations, we claim that the host-guest model of ECM glycopeptides offers an effective tool to expedite identification of specific glycopeptides to manipulate cell morphogenesis, cell differentiation metastatic processes, and their biomedical applications.
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Affiliation(s)
- Sivakoti Sangabathuni
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | | | - Madhuri Gade
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | - Harikrishna Bavireddi
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | - Suraj Toraskar
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | - Mahesh V Sonar
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | - Krishna N Ganesh
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
| | - Raghavendra Kikkeri
- Indian Institute of Science Education and Research , Dr. Homi Bhabha Road, Pune 411008, India
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176
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Pourseif MM, Moghaddam G, Daghighkia H, Nematollahi A, Omidi Y. A novel B- and helper T-cell epitopes-based prophylactic vaccine against Echinococcus granulosus. ACTA ACUST UNITED AC 2017; 8:39-52. [PMID: 29713601 PMCID: PMC5915707 DOI: 10.15171/bi.2018.06] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/02/2017] [Accepted: 12/03/2017] [Indexed: 12/17/2022]
Abstract
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Introduction:
In this study, we targeted the worm stage of Echinococcus granulosus to design a novel multi-epitope B- and helper T-cell based vaccine construct for immunization of dogs against this multi-host parasite.
Methods:
The vaccine was designed based on the local Eg14-3-3 antigen (Ag). DNA samples were extracted from the protoscoleces of the infected sheep’s liver, and then subjected to the polymerase chain reaction (PCR) with 14-3-3 specific forward and reverse primers. For the vaccine designing, several in silico steps were undertaken. Three-dimensional (3D) structure of the local Eg14-3-3 Ag was modeled by EasyModeller software. The protein modeling accuracy was then analyzed via various validation assays. Potential transmembrane helix, signal peptide, post-translational modifications and allergenicity of Eg14-3-3 were evaluated as the preliminary measures of B-cell epitopes (BEs ) prediction. Having used many web-servers, a well-designed process was carried out for improved prediction of BEs. High ranked linear and conformational BEs were utilized for engineering the final vaccine construct. Possible T-helper epitopes (TEs) were identified by the molecular docking between 13-mer fragments of the Eg14-3-3 Ag and two high frequent dog class II MHC alleles (i.e., DLA-DRB1*01101 and DRB1*01501). The epitopes coverage was evaluated by Shannon’s variability plot.
Results:
The final designed construct was analyzed based on different physicochemical properties, which was then codon optimized for high-level expression in Escherichia coli k12. This minigene construct is the first dog-specific epitopic vaccine construct that is established based on TEs with high-binding affinity to canine MHC alleles.
Conclusion:
This in silico study is the first part of a multi-antigenic vaccine designing work that represents as a novel dog-specific vaccine against E. granulosus. Here, we present key data on the step-by-step methodologies used for designing this de novo vaccine, which is under comprehensive in vivo investigations.
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Affiliation(s)
- Mohammad M Pourseif
- Department of Animal Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.,Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Gholamali Moghaddam
- Department of Animal Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghighkia
- Department of Animal Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Ahmad Nematollahi
- Department of Pathobiology, Veterinary Collage, University of Tabriz, Tabriz, Iran
| | - Yadollah Omidi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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177
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Hafstrand I, Badia-Martinez D, Josey BJ, Norström M, Buratto J, Pellegrino S, Duru AD, Sandalova T, Achour A. Crystal structures of H-2Db in complex with the LCMV-derived peptides GP92 and GP392 explain pleiotropic effects of glycosylation on antigen presentation and immunogenicity. PLoS One 2017; 12:e0189584. [PMID: 29253009 PMCID: PMC5734757 DOI: 10.1371/journal.pone.0189584] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/29/2017] [Indexed: 01/16/2023] Open
Abstract
Post-translational modifications significantly broaden the epitope repertoire for major histocompatibility class I complexes (MHC-I) and may allow viruses to escape immune recognition. Lymphocytic choriomeningitis virus (LCMV) infection of H-2b mice generates CD8+ CTL responses directed towards several MHC-I-restricted epitopes including the peptides GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL), both with a N-glycosylation site. Interestingly, glycosylation has different effects on the immunogenicity and association capacity of these two epitopes to H-2Db. To assess the structural bases underlying these functional results, we determined the crystal structures of H-2Db in complex with GP92 (CSANNSHHYI) and GP392 (WLVTNGSYL) to 2.4 and 2.5 Å resolution, respectively. The structures reveal that while glycosylation of GP392 most probably impairs binding, the glycosylation of the asparagine residue in GP92, which protrudes towards the solvent, possibly allows for immune escape and/or forms a neo-epitope that may select for a different set of CD8 T cells. Altogether, the presented results provide a structural platform underlying the effects of post-translational modifications on epitope binding and/or immunogenicity, resulting in viral immune escape.
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Affiliation(s)
- Ida Hafstrand
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Daniel Badia-Martinez
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Benjamin John Josey
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Melissa Norström
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Jérémie Buratto
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Sara Pellegrino
- DISFARM, Dipartimento di Scienze Farmaceutiche, Sezinone Chimica Generale e Organica, Università degli Studi, Milano, Italy
| | - Adil Doganay Duru
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL, United State of America
- College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United State of America
| | - Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, and Department of Infectious Diseases, Karolinska University Hospital, Solna, Stockholm, Sweden
- * E-mail:
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178
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Somovilla VJ, Bermejo IA, Albuquerque IS, Martínez-Sáez N, Castro-López J, García-Martín F, Compañón I, Hinou H, Nishimura SI, Jiménez-Barbero J, Asensio JL, Avenoza A, Busto JH, Hurtado-Guerrero R, Peregrina JM, Bernardes GJL, Corzana F. The Use of Fluoroproline in MUC1 Antigen Enables Efficient Detection of Antibodies in Patients with Prostate Cancer. J Am Chem Soc 2017; 139:18255-18261. [PMID: 29166012 DOI: 10.1021/jacs.7b09447] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A structure-based design of a new generation of tumor-associated glycopeptides with improved affinity against two anti-MUC1 antibodies is described. These unique antigens feature a fluorinated proline residue, such as a (4S)-4-fluoro-l-proline or 4,4-difluoro-l-proline, at the most immunogenic domain. Binding assays using biolayer interferometry reveal 3-fold to 10-fold affinity improvement with respect to the natural (glyco)peptides. According to X-ray crystallography and MD simulations, the fluorinated residues stabilize the antigen-antibody complex by enhancing key CH/π interactions. Interestingly, a notable improvement in detection of cancer-associated anti-MUC1 antibodies from serum of patients with prostate cancer is achieved with the non-natural antigens, which proves that these derivatives can be considered better diagnostic tools than the natural antigen for prostate cancer.
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Affiliation(s)
- Víctor J Somovilla
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain.,Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Bijvoet Center for Biomolecular Research, Utrecht University , Universiteitsweg 99, Utrecht, The Netherlands
| | - Iris A Bermejo
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
| | - Inês S Albuquerque
- Instituto de Medicina Molecular, Faculdade de Medicina da, Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Nuria Martínez-Sáez
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain.,Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Bijvoet Center for Biomolecular Research, Utrecht University , Universiteitsweg 99, Utrecht, The Netherlands
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) , Zaragoza, Spain
| | - Fayna García-Martín
- Graduate School and Faculty of Advanced Life Science, Field of Drug Discovery Research, Hokkaido University , N21 W11, Sapporo 001-0021, Japan
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
| | - Hiroshi Hinou
- Graduate School and Faculty of Advanced Life Science, Field of Drug Discovery Research, Hokkaido University , N21 W11, Sapporo 001-0021, Japan
| | - Shin-Ichiro Nishimura
- Graduate School and Faculty of Advanced Life Science, Field of Drug Discovery Research, Hokkaido University , N21 W11, Sapporo 001-0021, Japan
| | - Jesús Jiménez-Barbero
- (i) CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain; (ii) Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 13, 48009 Bilbao, Spain; (iii) Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country , 48940 Leioa, Spain
| | - Juan L Asensio
- Instituto de Química Orgánica General, IQOG-CSIC , 28006 Madrid, Spain
| | - Alberto Avenoza
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
| | - Jesús H Busto
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) , Zaragoza, Spain.,Fundación ARAID , 50018 Zaragoza, Spain
| | - Jesús M Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina da, Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal.,Department of Chemistry, University of Cambridge , Lensfield Road, CB2 1EW Cambridge, U.K
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química , 26006 Logroño, Spain
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179
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Biodegradable Chitosan Decreases the Immune Response to Trichinella spiralis in Mice. Molecules 2017; 22:molecules22112008. [PMID: 29156562 PMCID: PMC6150330 DOI: 10.3390/molecules22112008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/12/2017] [Accepted: 11/16/2017] [Indexed: 12/16/2022] Open
Abstract
The purpose of this study was to evaluate the potential of chitosan units released during natural degradation of the polymer to activate the immune system against T. spiralis infection. High molecular weight chitosan was injected intraperitoneally into C57BL/6 mice. Flow cytometry and cytokine concentration, measured by ELISA, were used to characterize peritoneal cell populations during T. spiralis infection. The strong chemo-attractive properties of chitosan caused considerable infiltration into the peritoneal cavity of CD11b+ cells, with reduced expression of MHC class II, CD80, CD86, Dectin-1 or CD23 receptors in comparison to T. spiralis-infected mice. After prolonged chitosan biodegradation, cell populations expressing IL-4R, MR and Dectin-1 receptors were found to coexist with elevated IL-6, IL-10, TGF-β and IgA production. IgA cross-reacted with T. spiralis antigen and chitosan. It was found that chitosan treatment attracted immune cells with low activity, which resulted in the number of nematodes increasing. The glucosamine and N-acetyl-D-glucosamine residues were recognized by wheat germ agglutinin (WGA) lectin and therefore any biodegradable chitosan units may actively downregulate the immune response to the parasite. The findings are relevant for both people and animals treated with chitosan preparations.
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180
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A method to identify trace sulfated IgG N-glycans as biomarkers for rheumatoid arthritis. Nat Commun 2017; 8:631. [PMID: 28931878 PMCID: PMC5606999 DOI: 10.1038/s41467-017-00662-w] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 07/19/2017] [Indexed: 12/12/2022] Open
Abstract
N-linked glycans on immunoglobulin G (IgG) have been associated with pathogenesis of diseases and the therapeutic functions of antibody-based drugs; however, low-abundance species are difficult to detect. Here we show a glycomic approach to detect these species on human IgGs using a specialized microfluidic chip. We discover 20 sulfated and 4 acetylated N-glycans on IgGs. Using multiple reaction monitoring method, we precisely quantify these previously undetected low-abundance, trace and even ultra-trace N-glycans. From 277 patients with rheumatoid arthritis (RA) and 141 healthy individuals, we also identify N-glycan biomarkers for the classification of both rheumatoid factor (RF)-positive and negative RA patients, as well as anti-citrullinated protein antibodies (ACPA)-positive and negative RA patients. This approach may identify N-glycosylation-associated biomarkers for other autoimmune and infectious diseases and lead to the exploration of promising glycoforms for antibody therapeutics.Post-translational modifications can affect antibody function in health and disease, but identification of all variants is difficult using existing technologies. Here the authors develop a microfluidic method to identify and quantify low-abundance IgG N-glycans and show some of these IgGs can be used as biomarkers for rheumatoid arthritis.
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181
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Protein O-fucosylation in Plasmodium falciparum ensures efficient infection of mosquito and vertebrate hosts. Nat Commun 2017; 8:561. [PMID: 28916755 PMCID: PMC5601480 DOI: 10.1038/s41467-017-00571-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 07/11/2017] [Indexed: 01/14/2023] Open
Abstract
O-glycosylation of the Plasmodium sporozoite surface proteins CSP and TRAP was recently identified, but the role of this modification in the parasite life cycle and its relevance to vaccine design remain unclear. Here, we identify the Plasmodium protein O-fucosyltransferase (POFUT2) responsible for O-glycosylating CSP and TRAP. Genetic disruption of POFUT2 in Plasmodium falciparum results in ookinetes that are attenuated for colonizing the mosquito midgut, an essential step in malaria transmission. Some POFUT2-deficient parasites mature into salivary gland sporozoites although they are impaired for gliding motility, cell traversal, hepatocyte invasion, and production of exoerythrocytic forms in humanized chimeric liver mice. These defects can be attributed to destabilization and incorrect trafficking of proteins bearing thrombospondin repeats (TSRs). Therefore, POFUT2 plays a similar role in malaria parasites to that in metazoans: it ensures the trafficking of Plasmodium TSR proteins as part of a non-canonical glycosylation-dependent endoplasmic reticulum protein quality control mechanism. The role of O-glycosylation in the malaria life cycle is largely unknown. Here, the authors identify a Plasmodium protein O-fucosyltransferase and show that it is important for normal trafficking of a subset of surface proteins, particularly CSP and TRAP, and efficient infection of mosquito and vertebrate hosts.
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182
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Unfolded protein response signaling impacts macrophage polarity to modulate breast cancer cell clearance and melanoma immune checkpoint therapy responsiveness. Oncotarget 2017; 8:80545-80559. [PMID: 29113324 PMCID: PMC5655219 DOI: 10.18632/oncotarget.19849] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/23/2017] [Indexed: 12/28/2022] Open
Abstract
The unfolded protein response (UPR) is a stress pathway controlled by GRP78 to mediate IRE1, PERK, and ATF6 signaling. We show that targeting GRP78, IRE1, and PERK differentially regulates macrophage polarization. Specifically, PERK targeting enhanced macrophage proliferation and macrophage-mediated killing but not GRP78 or IRE1. Targeting UPR in cancer cells also differentially affected macrophage cytolytic capacity. Tumoral IRE1 or GRP78 inhibition enhanced macrophage-mediated cancer cell clearance. Conditioned media from GRP78-silenced cancer cells caused reciprocal regulation of CD80 and CD206, suggesting control of plasticity by secreted factors. GRP78 targeting in mice resulted in a cytokine shift and increased tumoral CD80+/CD68+ cells, suggesting an M1-like profile. Targeting UPR in both macrophage and cancer cells indicates that PERK or GRP78 reduction enhances macrophage clearance of cancer cells. Recent evidence suggests that macrophage polarization influences immune checkpoint therapy resistance. To determine whether UPR effects immunotherapy resistance, analysis of matched melanoma patient PBMC before/after developing ipilimumab resistance demonstrated increased UPR signaling and an M2-like macrophage population, supporting a novel role of UPR signaling and innate immune regulation in anti-CTLA-4 therapy resistance. These data suggest that targeting GRP78 or PERK promotes an anti-tumor immune response by either directly promoting macrophage cytolytic activity or indirectly by shifting tumoral cytokine secretion.
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183
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Abstract
Salmonella enterica subspecies enterica includes several serovars infecting both humans and other animals and leading to typhoid fever or gastroenteritis. The high prevalence of associated morbidity and mortality, together with an increased emergence of multidrug-resistant strains, is a current global health issue that has prompted the development of vaccination strategies that confer protection against most serovars. Currently available systemic vaccine approaches have major limitations, including a reduced effectiveness in young children and a lack of cross-protection among different strains. Having studied host-pathogen interactions, microbiologists and immunologists argue in favor of topical gastrointestinal administration for improvement in vaccine efficacy. Here, recent advances in this field are summarized, including mechanisms of bacterial uptake at the intestinal epithelium, the assessment of protective host immunity, and improved animal models that closely mimic infection in humans. The pros and cons of existing vaccines are presented, along with recent progress made with novel formulations. Finally, new candidate antigens and their relevance in the refined design of anti-Salmonella vaccines are discussed, along with antigen vectorization strategies such as nanoparticles or secretory immunoglobulins, with a focus on potentiating mucosal vaccine efficacy.
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184
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Hui J, Bao L, Li S, Zhang Y, Feng Y, Ding L, Ju H. Localized Chemical Remodeling for Live Cell Imaging of Protein-Specific Glycoform. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703406] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jingjing Hui
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Lei Bao
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Siqiao Li
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Yi Zhang
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Yimei Feng
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Lin Ding
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
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185
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Hui J, Bao L, Li S, Zhang Y, Feng Y, Ding L, Ju H. Localized Chemical Remodeling for Live Cell Imaging of Protein-Specific Glycoform. Angew Chem Int Ed Engl 2017; 56:8139-8143. [PMID: 28557363 DOI: 10.1002/anie.201703406] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Indexed: 11/07/2022]
Abstract
Live cell imaging of protein-specific glycoforms is important for the elucidation of glycosylation mechanisms and identification of disease states. The currently used metabolic oligosaccharide engineering (MOE) technology permits routinely global chemical remodeling (GCM) for carbohydrate site of interest, but can exert unnecessary whole-cell scale perturbation and generate unpredictable metabolic efficiency issue. A localized chemical remodeling (LCM) strategy for efficient and reliable access to protein-specific glycoform information is reported. The proof-of-concept protocol developed for MUC1-specific terminal galactose/N-acetylgalactosamine (Gal/GalNAc) combines affinity binding, off-on switchable catalytic activity, and proximity catalysis to create a reactive handle for bioorthogonal labeling and imaging. Noteworthy assay features associated with LCM as compared with MOE include minimum target cell perturbation, short reaction timeframe, effectiveness as a molecular ruler, and quantitative analysis capability.
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Affiliation(s)
- Jingjing Hui
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Lei Bao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Siqiao Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Yi Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Yimei Feng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Lin Ding
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China
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186
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Abstract
Many of the best-selling 'blockbuster' biological medicinal products are, or will soon be, facing competition from similar biological medicinal products (biosimilars) in the EU. Biosimilarity is based on the comparability concept, which has been used successfully for several decades to ensure close similarity of a biological product before and after a manufacturing change. Over the last 10 years, experience with biosimilars has shown that even complex biotechnology-derived proteins can be copied successfully. Most best-selling biologicals are used for chronic treatment. This has triggered intensive discussion on the interchangeability of a biosimilar with its reference product, with the main concern being immunogenicity. We explore the theoretical basis of the presumed risks of switching between a biosimilar and its reference product and the available data on switches. Our conclusion is that a switch between comparable versions of the same active substance approved in accordance with EU legislation is not expected to trigger or enhance immunogenicity. On the basis of current knowledge, it is unlikely and very difficult to substantiate that two products, comparable on a population level, would have different safety or efficacy in individual patients upon a switch. Our conclusion is that biosimilars licensed in the EU are interchangeable.
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187
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Homann A, Schramm G, Jappe U. Glycans and glycan-specific IgE in clinical and molecular allergology: Sensitization, diagnostics, and clinical symptoms. J Allergy Clin Immunol 2017; 140:356-368. [PMID: 28479330 DOI: 10.1016/j.jaci.2017.04.019] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 03/22/2017] [Accepted: 04/18/2017] [Indexed: 02/06/2023]
Abstract
Glycan-specific IgE antibodies cross-react with highly similar or even identical carbohydrate structures on a variety of different natural allergens, the so-called cross-reactive carbohydrate determinants (CCDs). In clinical practice CCDs often interfere with the specificity of in vitro allergy diagnostics, thus impairing allergy therapy decisions for individual patients. Strikingly, these IgE antibodies directed against CCDs often do not cause clinically relevant allergy symptoms. On the other hand, the IgE-binding glycan allergen galactose-α-(1,3)-galactose (α-Gal) is associated with IgE-mediated delayed anaphylaxis in meat allergy. The reason for this discrepancy is not known. The discovery of α-Gal stimulated new discussions and investigations regarding the relevance of anti-glycan IgE for allergic diseases. In this review the effect of glycans and glycan-specific IgE on sensitization to allergens and allergy diagnosis is described. Because parasite infections elicit a similar immunologic environment as allergic diseases, the association of glycan-specific antibodies against parasite glycoproteins with glycan structures on allergens is discussed.
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Affiliation(s)
- Arne Homann
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma & Allergy, Airway Research Center North (ARCN), Member of the German Centre for Lung Research (DZL), Borstel, Germany
| | - Gabriele Schramm
- Division of Experimental Pneumology, Priority Research Area Asthma & Allergy, Research Center Borstel, Borstel, Germany
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma & Allergy, Airway Research Center North (ARCN), Member of the German Centre for Lung Research (DZL), Borstel, Germany; Interdisciplinary Allergy Outpatient Clinic, University of Lübeck, Lübeck, Germany.
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188
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Facile preparation of polysaccharide functionalized macroporous adsorption resin for highly selective enrichment of glycopeptides. J Chromatogr A 2017; 1498:72-79. [DOI: 10.1016/j.chroma.2016.12.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 11/18/2016] [Accepted: 12/15/2016] [Indexed: 12/28/2022]
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189
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DiPiazza A, Richards K, Poulton N, Sant AJ. Avian and Human Seasonal Influenza Hemagglutinin Proteins Elicit CD4 T Cell Responses That Are Comparable in Epitope Abundance and Diversity. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2017; 24:e00548-16. [PMID: 28100497 PMCID: PMC5339641 DOI: 10.1128/cvi.00548-16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 01/10/2017] [Indexed: 02/07/2023]
Abstract
Avian influenza viruses remain a significant concern due to their pandemic potential. Vaccine trials have suggested that humans respond poorly to avian influenza vaccines relative to seasonal vaccines. It is important to understand, first, if there is a general deficiency in the ability of avian hemagglutinin (HA) proteins to generate immune responses and, if so, what underlies this defect. This question is of particular interest because it has been suggested that in humans, the poor immunogenicity of H7 vaccines may be due to a paucity of CD4 T cell epitopes. Because of the generally high levels of cross-reactive CD4 T cells in humans, it is not possible to compare the inherent immunogenicities of avian and seasonal HA proteins in an unbiased manner. Here, we empirically examine the epitope diversity and abundance of CD4 T cells elicited by seasonal and avian HA proteins. HLA-DR1 and HLA-DR4 transgenic mice were vaccinated with purified HA proteins, and CD4 T cells to specific epitopes were identified and quantified. These studies revealed that the diversity and abundance of CD4 T cells specific for HA do not segregate on the basis of whether the HA was derived from human seasonal or avian influenza viruses. Therefore, we conclude that failure in responses to avian vaccines in humans is likely due to a lack of cross-reactive CD4 T cell memory perhaps coupled with competition with or suppression of naive, HA-specific CD4 T cells by memory CD4 T cells specific for more highly conserved proteins.
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Affiliation(s)
- Anthony DiPiazza
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Katherine Richards
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Nicholas Poulton
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
| | - Andrea J Sant
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
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190
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Bednarska NG, Wren BW, Willcocks SJ. The importance of the glycosylation of antimicrobial peptides: natural and synthetic approaches. Drug Discov Today 2017; 22:919-926. [PMID: 28212948 DOI: 10.1016/j.drudis.2017.02.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/24/2017] [Accepted: 02/02/2017] [Indexed: 12/16/2022]
Abstract
Glycosylation is one of the most prevalent post-translational modifications of a protein, with a defining impact on its structure and function. Many of the proteins involved in the innate or adaptive immune response, including cytokines, chemokines, and antimicrobial peptides (AMPs), are glycosylated, contributing to their myriad activities. The current availability of synthetic coupling and glycoengineering technology makes it possible to customise the most beneficial glycan modifications for improved AMP stability, microbicidal potency, pathogen specificity, tissue or cell targeting, and immunomodulation.
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Affiliation(s)
| | - Brendan W Wren
- London School of Hygiene and Tropical Medicine, Keppel Street, London, UK
| | - Sam J Willcocks
- London School of Hygiene and Tropical Medicine, Keppel Street, London, UK.
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191
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Protein glycosylation in gastric and colorectal cancers: Toward cancer detection and targeted therapeutics. Cancer Lett 2017; 387:32-45. [DOI: 10.1016/j.canlet.2016.01.044] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/20/2016] [Accepted: 01/22/2016] [Indexed: 12/25/2022]
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192
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Khatun F, Stephenson RJ, Toth I. An Overview of Structural Features of Antibacterial Glycoconjugate Vaccines That Influence Their Immunogenicity. Chemistry 2017; 23:4233-4254. [PMID: 28097690 DOI: 10.1002/chem.201603599] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 12/13/2022]
Abstract
Bacterial cell-surface-derived or mimicked carbohydrate moieties that act as protective antigens are used in the development of antibacterial glycoconjugate vaccines. The carbohydrate antigen must have a minimum length or size to maintain the conformational structure of the antigenic epitope(s). The presence or absence of O-acetate, phosphate, glycerol phosphate and pyruvate ketal plays a vital role in defining the immunogenicity of the carbohydrate antigen. The nature of the carrier protein, spacer and conjugation pattern used to develop the glycoconjugate vaccine also defines its overall spatial orientation which in turn affects its avidity and selectivity of interaction with the desired target(s). In addition, the ratio of carbohydrate to protein in glycoconjugate vaccines also makes an important contribution in determining the optimum immunological response. This Review article presents the importance of these variables in the development of antibacterial glycoconjugate vaccines and their effects on immune efficacy.
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Affiliation(s)
- Farjana Khatun
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Rachel J Stephenson
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia.,School of Pharmacy, Woolloongabba, The University of Queensland, QLD, Australia.,Institute for Molecular Bioscience, St. Lucia, The University of Queensland, QLD, Australia
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193
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Plant-Based Peroral Vaccines. MULTIFUNCTIONAL SYSTEMS FOR COMBINED DELIVERY, BIOSENSING AND DIAGNOSTICS 2017. [PMCID: PMC7152130 DOI: 10.1016/b978-0-323-52725-5.00010-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Data about the development of plant-made peroral vaccines are stated on the base of transgenic plants. Different aspects of plant made vaccines (PMV) with their peculiarities and with a plethora of advantages are discussed, in comparison with traditional vaccines. The results disclosing the characteristics of the creation of PMV of both preventive and therapeutic actions are presented. The role of regulatory genes in the increase of the production of antigenic proteins, and in the activation of the glycosylation that enhances the efficiency of PMV, is discussed, according to preventive and therapeutic vaccines and plantibodies.
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194
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Chuh KN, Batt AR, Pratt MR. Chemical Methods for Encoding and Decoding of Posttranslational Modifications. Cell Chem Biol 2016; 23:86-107. [PMID: 26933738 DOI: 10.1016/j.chembiol.2015.11.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 11/25/2015] [Accepted: 11/25/2015] [Indexed: 12/13/2022]
Abstract
A large array of posttranslational modifications can dramatically change the properties of proteins and influence different aspects of their biological function such as enzymatic activity, binding interactions, and proteostasis. Despite the significant knowledge that has been gained about the function of posttranslational modifications using traditional biological techniques, the analysis of the site-specific effects of a particular modification, the identification of the full complement of modified proteins in the proteome, and the detection of new types of modifications remains challenging. Over the years, chemical methods have contributed significantly in both of these areas of research. This review highlights several posttranslational modifications where chemistry-based approaches have made significant contributions to our ability to both prepare homogeneously modified proteins and identify and characterize particular modifications in complex biological settings. As the number and chemical diversity of documented posttranslational modifications continues to rise, we believe that chemical strategies will be essential to advance the field in years to come.
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Affiliation(s)
- Kelly N Chuh
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Anna R Batt
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Matthew R Pratt
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA; Department of Molecular and Computational Biology, University of Southern California, Los Angeles, CA 90089, USA.
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195
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GlycoMine struct: a new bioinformatics tool for highly accurate mapping of the human N-linked and O-linked glycoproteomes by incorporating structural features. Sci Rep 2016; 6:34595. [PMID: 27708373 PMCID: PMC5052564 DOI: 10.1038/srep34595] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/15/2016] [Indexed: 12/13/2022] Open
Abstract
Glycosylation plays an important role in cell-cell adhesion, ligand-binding and subcellular recognition. Current approaches for predicting protein glycosylation are primarily based on sequence-derived features, while little work has been done to systematically assess the importance of structural features to glycosylation prediction. Here, we propose a novel bioinformatics method called GlycoMinestruct(http://glycomine.erc.monash.edu/Lab/GlycoMine_Struct/) for improved prediction of human N- and O-linked glycosylation sites by combining sequence and structural features in an integrated computational framework with a two-step feature-selection strategy. Experiments indicated that GlycoMinestruct outperformed NGlycPred, the only predictor that incorporated both sequence and structure features, achieving AUC values of 0.941 and 0.922 for N- and O-linked glycosylation, respectively, on an independent test dataset. We applied GlycoMinestruct to screen the human structural proteome and obtained high-confidence predictions for N- and O-linked glycosylation sites. GlycoMinestruct can be used as a powerful tool to expedite the discovery of glycosylation events and substrates to facilitate hypothesis-driven experimental studies.
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196
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Malaker SA, Ferracane MJ, Depontieu FR, Zarling AL, Shabanowitz J, Bai DL, Topalian SL, Engelhard VH, Hunt DF. Identification and Characterization of Complex Glycosylated Peptides Presented by the MHC Class II Processing Pathway in Melanoma. J Proteome Res 2016; 16:228-237. [PMID: 27550523 DOI: 10.1021/acs.jproteome.6b00496] [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] [Indexed: 11/28/2022]
Abstract
The MHC class II (MHCII) processing pathway presents peptides derived from exogenous or membrane-bound proteins to CD4+ T cells. Several studies have shown that glycopeptides are necessary to modulate CD4+ T cell recognition, though glycopeptide structures in these cases are generally unknown. Here, we present a total of 93 glycopeptides from three melanoma cell lines and one matched EBV-transformed line with most found only in the melanoma cell lines. The glycosylation we detected was diverse and comprised 17 different glycoforms. We then used molecular modeling to demonstrate that complex glycopeptides are capable of binding the MHC and may interact with complementarity determining regions. Finally, we present the first evidence of disulfide-bonded peptides presented by MHCII. This is the first large scale study to sequence glyco- and disulfide bonded MHCII peptides from the surface of cancer cells and could represent a novel avenue of tumor activation and/or immunoevasion.
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Affiliation(s)
| | - Michael J Ferracane
- Department of Medicinal Chemistry, University of Florida , Gainesville, Florida 32610, United States
| | - Florence R Depontieu
- Department of Surgery, Johns Hopkins University School of Medicine , Baltimore, Maryland 21205, United States
| | | | | | | | - Suzanne L Topalian
- Department of Surgery, Johns Hopkins University School of Medicine , Baltimore, Maryland 21205, United States
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197
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Sun Y, Cheng L, Gu Y, Xin A, Wu B, Zhou S, Guo S, Liu Y, Diao H, Shi H, Wang G, Tao SC. A Human Lectin Microarray for Sperm Surface Glycosylation Analysis. Mol Cell Proteomics 2016; 15:2839-51. [PMID: 27364157 PMCID: PMC5013302 DOI: 10.1074/mcp.m116.059311] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/27/2016] [Indexed: 11/06/2022] Open
Abstract
Glycosylation is one of the most abundant and functionally important protein post-translational modifications. As such, technology for efficient glycosylation analysis is in high demand. Lectin microarrays are a powerful tool for such investigations and have been successfully applied for a variety of glycobiological studies. However, most of the current lectin microarrays are primarily constructed from plant lectins, which are not well suited for studies of human glycosylation because of the extreme complexity of human glycans. Herein, we constructed a human lectin microarray with 60 human lectin and lectin-like proteins. All of the lectins and lectin-like proteins were purified from yeast, and most showed binding to human glycans. To demonstrate the applicability of the human lectin microarray, human sperm were probed on the microarray and strong bindings were observed for several lectins, including galectin-1, 7, 8, GalNAc-T6, and ERGIC-53 (LMAN1). These bindings were validated by flow cytometry and fluorescence immunostaining. Further, mass spectrometry analysis showed that galectin-1 binds several membrane-associated proteins including heat shock protein 90. Finally, functional assays showed that binding of galectin-8 could significantly enhance the acrosome reaction within human sperms. To our knowledge, this is the first construction of a human lectin microarray, and we anticipate it will find wide use for a range of human or mammalian studies, alone or in combination with plant lectin microarrays.
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Affiliation(s)
- Yangyang Sun
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China; ¶State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai 200240, China; §§Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Li Cheng
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China; §School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; ¶State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yihua Gu
- ‖China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Aijie Xin
- **Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai 200011, China
| | - Bin Wu
- ‖China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Shumin Zhou
- ‡‡Institute for Microsurgery of Limbs, Shanghai sixth hospital, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shujuan Guo
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yin Liu
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China; ¶State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hua Diao
- ‖China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Huijuan Shi
- ‖China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Guangyu Wang
- §§Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Sheng-Ce Tao
- From the ‡Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China; §School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; ¶State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University, Shanghai 200240, China;
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198
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Janssen WJ, Stefanski AL, Bochner BS, Evans CM. Control of lung defence by mucins and macrophages: ancient defence mechanisms with modern functions. Eur Respir J 2016; 48:1201-1214. [PMID: 27587549 DOI: 10.1183/13993003.00120-2015] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 06/12/2016] [Indexed: 12/14/2022]
Abstract
Owing to the need to balance the requirement for efficient respiration in the face of tremendous levels of exposure to endogenous and environmental challenges, it is crucial for the lungs to maintain a sustainable defence that minimises damage caused by this exposure and the detrimental effects of inflammation to delicate gas exchange surfaces. Accordingly, epithelial and macrophage defences constitute essential first and second lines of protection that prevent the accumulation of potentially harmful agents in the lungs, and under homeostatic conditions do so effectively without inducing inflammation. Though epithelial and macrophage-mediated defences are seemingly distinct, recent data show that they are linked through their shared reliance on airway mucins, in particular the polymeric mucin MUC5B. This review highlights our understanding of novel mechanisms that link mucus and macrophage defences. We discuss the roles of phagocytosis and the effects of factors contained within mucus on phagocytosis, as well as newly identified roles for mucin glycoproteins in the direct regulation of leukocyte functions. The emergence of this nascent field of glycoimmunobiology sets forth a new paradigm for considering how homeostasis is maintained under healthy conditions and how it is restored in disease.
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Affiliation(s)
- William J Janssen
- Dept of Medicine, National Jewish Health, Denver, CO, USA Dept of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Bruce S Bochner
- Dept of Medicine, Division of Allergy-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Christopher M Evans
- Dept of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
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199
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Li C, Wang LX. Endoglycosidases for the Synthesis of Polysaccharides and Glycoconjugates. Adv Carbohydr Chem Biochem 2016; 73:73-116. [PMID: 27816108 DOI: 10.1016/bs.accb.2016.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recent advances in glycobiology have implicated essential roles of oligosaccharides and glycoconjugates in many important biological recognition processes, including intracellular signaling, cell adhesion, cell differentiation, cancer progression, host-pathogen interactions, and immune responses. A detailed understanding of the biological functions, as well as the development of carbohydrate-based therapeutics, often requires structurally well-defined oligosaccharides and glycoconjugates, which are usually difficult to isolate in pure form from natural sources. To meet with this urgent need, chemical and chemoenzymatic synthesis has become increasingly important as the major means to provide homogeneous compounds for functional glycocomics studies and for drug/vaccine development. Chemoenzymatic synthesis, an approach that combines chemical synthesis and enzymatic manipulations, is often the method of choice for constructing complex oligosaccharides and glycoconjugates that are otherwise difficult to achieve by purely chemical synthesis. Among these, endoglycosidases, a class of glycosidases that hydrolyze internal glycosidic bonds in glycoconjugates and polysaccharides, are emerging as a very attractive class of enzymes for synthetic purposes, due to their transglycosylation activity and their capability of transferring oligosaccharide units en bloc in a single step, in contrast to the limitation of monosaccharide transfers by common glycosyltransferases. In this chapter, we provide an overview on the application of endoglycosidases for the synthesis of complex carbohydrates, including oligosaccharides, polysaccharides, glycoproteins, glycolipids, proteoglycans, and other biologically relevant polysaccharides. The scope, limitation, and future directions of endoglycosidase-catalyzed synthesis are discussed.
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Affiliation(s)
- Chao Li
- University of Maryland, College Park, MD, United States
| | - Lai-Xi Wang
- University of Maryland, College Park, MD, United States
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200
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Morita D, Sugita M. Lipopeptides: a novel antigen repertoire presented by major histocompatibility complex class I molecules. Immunology 2016; 149:139-45. [PMID: 27402593 DOI: 10.1111/imm.12646] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/04/2016] [Accepted: 07/06/2016] [Indexed: 01/13/2023] Open
Abstract
Post-translationally modified peptides, such as those containing either phosphorylated or O-glycosylated serine/threonine residues, may be presented to cytotoxic T lymphocytes (CTLs) by MHC class I molecules. Most of these modified peptides are captured in the MHC class I groove in a similar manner to that for unmodified peptides. N-Myristoylated 5-mer lipopeptides have recently been identified as a novel chemical class of MHC class I-presented antigens. The rhesus classical MHC class I allele, Mamu-B*098, was found to be capable of binding N-myristoylated lipopeptides and presenting them to CTLs. A high-resolution X-ray crystallographic analysis of the Mamu-B*098:lipopeptide complex revealed that the myristic group as well as conserved C-terminal serine residue of the lipopeptide ligand functioned as anchors, whereas the short stretch of three amino acid residues located in the middle of the lipopeptides was only exposed externally with the potential to interact directly with specific T-cell receptors. Therefore, the modes of lipopeptide-ligand interactions with MHC class I and with T-cell receptors are novel and fundamentally distinct from that for MHC class I-presented peptides. Another lipopeptide-presenting MHC class I allele has now been identified, leading us to the prediction that MHC class I molecules may be separated on a functional basis into two groups: one presenting long peptides and the other presenting short lipopeptides. Since the N-myristoylation of viral proteins is often linked to pathogenesis, CTLs capable of sensing N-myristoylation may serve to control pathogenic viruses, raising the possibility for the development of a new type of lipopeptide vaccine.
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Affiliation(s)
- Daisuke Morita
- Laboratory of Cell Regulation, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Masahiko Sugita
- Laboratory of Cell Regulation, Institute for Virus Research, Kyoto University, Kyoto, Japan
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