1
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Santisteban Celis IC, Matoba N. Lectibodies as antivirals. Antiviral Res 2024; 227:105901. [PMID: 38734211 DOI: 10.1016/j.antiviral.2024.105901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/02/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
Growing concerns regarding the emergence of highly transmissible viral diseases highlight the urgent need to expand the repertoire of antiviral therapeutics. For this reason, new strategies for neutralizing and inhibiting these viruses are necessary. A promising approach involves targeting the glycans present on the surfaces of enveloped viruses. Lectins, known for their ability to recognize specific carbohydrate molecules, offer the potential for glycan-targeted antiviral strategies. Indeed, numerous studies have reported the antiviral effects of various lectins of both endogenous and exogenous origins. However, many lectins in their natural forms, are not suitable for use as antiviral therapeutics due to toxicity, other unfavorable pharmacological effects, and/or unreliable manufacturing sources. Therefore, improvements are crucial for employing lectins as effective antiviral therapeutics. A novel approach to enhance lectins' suitability as pharmaceuticals could be the generation of recombinant lectin-Fc fusion proteins, termed "lectibodies." In this review, we discuss the scientific rationale behind lectin-based antiviral strategies and explore how lectibodies could facilitate the development of new antiviral therapeutics. We will also share our perspective on the potential of these molecules to transcend their potential use as antiviral agents.
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Affiliation(s)
- Ian Carlosalberto Santisteban Celis
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, University of Louisville School of Medicine, Louisville, KY, USA
| | - Nobuyuki Matoba
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, University of Louisville School of Medicine, Louisville, KY, USA; UofL Health - Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, USA.
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2
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Wang S, Ran W, Sun L, Fan Q, Zhao Y, Wang B, Yang J, He Y, Wu Y, Wang Y, Chen L, Chuchuay A, You Y, Zhu X, Wang X, Chen Y, Wang Y, Chen YQ, Yuan Y, Zhao J, Mao Y. Sequential glycosylations at the multibasic cleavage site of SARS-CoV-2 spike protein regulate viral activity. Nat Commun 2024; 15:4162. [PMID: 38755139 PMCID: PMC11099032 DOI: 10.1038/s41467-024-48503-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024] Open
Abstract
The multibasic furin cleavage site at the S1/S2 boundary of the spike protein is a hallmark of SARS-CoV-2 and plays a crucial role in viral infection. However, the mechanism underlying furin activation and its regulation remain poorly understood. Here, we show that GalNAc-T3 and T7 jointly initiate clustered O-glycosylations in the furin cleavage site of the SARS-CoV-2 spike protein, which inhibit furin processing, suppress the incorporation of the spike protein into virus-like-particles and affect viral infection. Mechanistic analysis reveals that the assembly of the spike protein into virus-like particles relies on interactions between the furin-cleaved spike protein and the membrane protein of SARS-CoV-2, suggesting a possible mechanism for furin activation. Interestingly, mutations in the spike protein of the alpha and delta variants of the virus confer resistance against glycosylation by GalNAc-T3 and T7. In the omicron variant, additional mutations reverse this resistance, making the spike protein susceptible to glycosylation in vitro and sensitive to GalNAc-T3 and T7 expression in human lung cells. Our findings highlight the role of glycosylation as a defense mechanism employed by host cells against SARS-CoV-2 and shed light on the evolutionary interplay between the host and the virus.
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Affiliation(s)
- Shengjun Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, China
| | - Wei Ran
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lingyu Sun
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qingchi Fan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuanqi Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
- Foshan Institute for Food and Drug Control, Foshan, China
| | - Bowen Wang
- College of Life Science, Northwest University, Xi'an, China
| | - Jinghong Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuqi He
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ying Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuanyuan Wang
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, China
| | - Luoyi Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Arpaporn Chuchuay
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuyu You
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xinhai Zhu
- Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou, China
| | - Xiaojuan Wang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ye Chen
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yanqun Wang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yao-Qing Chen
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, China
| | - Yanqiu Yuan
- State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.
| | - Jincun Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
- Institute of Infectious Disease, Guangzhou Eighth People's Hospital of Guangzhou Medical University, Guangzhou, China.
- Guangzhou Laboratory, Bio-island, Guangzhou, China.
- The Second Affiliated Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen, China.
- Shanghai Institute for Advanced Immunochemical Studies, School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
- Institute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, China.
| | - Yang Mao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Drug Non-Clinical Evaluation and Research, Guangzhou, China.
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3
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Ming A, Zhao J, Liu Y, Wang Y, Wang X, Li J, Zhang L. O-glycosylation in viruses: A sweet tango. MLIFE 2024; 3:57-73. [PMID: 38827513 PMCID: PMC11139210 DOI: 10.1002/mlf2.12105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/26/2023] [Accepted: 11/07/2023] [Indexed: 06/04/2024]
Abstract
O-glycosylation is an ancient yet underappreciated protein posttranslational modification, on which many bacteria and viruses heavily rely to perform critical biological functions involved in numerous infectious diseases or even cancer. But due to the innate complexity of O-glycosylation, research techniques have been limited to study its exact role in viral attachment and entry, assembly and exit, spreading in the host cells, and the innate and adaptive immunity of the host. Recently, the advent of many newly developed methodologies (e.g., mass spectrometry, chemical biology tools, and molecular dynamics simulations) has renewed and rekindled the interest in viral-related O-glycosylation in both viral proteins and host cells, which is further fueled by the COVID-19 pandemic. In this review, we summarize recent advances in viral-related O-glycosylation, with a particular emphasis on the mucin-type O-linked α-N-acetylgalactosamine (O-GalNAc) on viral proteins and the intracellular O-linked β-N-acetylglucosamine (O-GlcNAc) modifications on host proteins. We hope to provide valuable insights into the development of antiviral reagents or vaccines for better prevention or treatment of infectious diseases.
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Affiliation(s)
- Annan Ming
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
| | - Jianxin Zhao
- Beijing Key Laboratory of DNA Damage Response and College of Life SciencesCapital Normal UniversityBeijingChina
| | - Yihan Liu
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
| | - Yibo Wang
- Laboratory of Chemical BiologyChangchun Institute of Applied Chemistry, Chinese Academy of SciencesChangchunChina
| | - Xiaohui Wang
- Laboratory of Chemical BiologyChangchun Institute of Applied Chemistry, Chinese Academy of SciencesChangchunChina
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefeiChina
- Beijing National Laboratory for Molecular SciencesBeijingChina
| | - Jing Li
- Beijing Key Laboratory of DNA Damage Response and College of Life SciencesCapital Normal UniversityBeijingChina
| | - Leiliang Zhang
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
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4
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Clarke EC. Considerations for Glycoprotein Production. Methods Mol Biol 2024; 2762:329-351. [PMID: 38315375 DOI: 10.1007/978-1-0716-3666-4_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
This chapter is intended to provide insights for researchers aiming to choose an appropriate expression system for the production of recombinant glycoproteins. Producing glycoproteins is complex, as glycosylation patterns are determined by the availability and abundance of specific enzymes rather than a direct genetic blueprint. Furthermore, the cell systems often employed for protein production are evolutionarily distinct, leading to significantly different glycosylation when utilized for glycoprotein production. The selection of an appropriate production system depends on the intended applications and desired characteristics of the protein. Whether the goal is to produce glycoproteins mimicking native conditions or to intentionally alter glycan structures for specific purposes, such as enhancing immunogenicity in vaccines, understanding glycosylation present in the different systems and in different growth conditions is essential. This chapter will cover Escherichia coli, baculovirus/insect cell systems, Pichia pastoris, as well as different mammalian cell culture systems including Chinese hamster ovary (CHO) cells, human endothelial kidney (HEK) cell lines, and baby hamster kidney (BHK) cells.
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Affiliation(s)
- Elizabeth C Clarke
- Center for Global Health, Division of Infectious Diseases, Department of Internal Medicine, University of New Mexico, Albuquerque, NM, USA.
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5
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Cheng X, Liu S, Sun J, Liu L, Ma X, Li J, Fan B, Yang C, Zhao Y, Liu S, Wen Y, Li W, Sun S, Mi S, Huo H, Miao L, Pan H, Cui X, Lin J, Lu X. A Synergistic Lipid Nanoparticle Encapsulating mRNA Shingles Vaccine Induces Potent Immune Responses and Protects Guinea Pigs from Viral Challenges. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2310886. [PMID: 38145557 DOI: 10.1002/adma.202310886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/07/2023] [Indexed: 12/27/2023]
Abstract
Shingles is caused by the reactivation of varicella zoster virus (VZV) and manifests as painful skin rashes. While the recombinant protein-based vaccine proves highly effective, it encounters supply chain challenges due to a shortage of the necessary adjuvant. Messenger RNA (mRNA)-based vaccines can be rapidly produced on a large scale, but their effectiveness relies on efficient delivery and sequence design. Here, an mRNA-based VZV vaccine using a synergistic lipid nanoparticle (Syn-LNP) containing two different ionizable lipids is developed. Syn-LNP shows superior mRNA expression compared to LNPs formulated with either type of ionizable lipid and to a commercialized LNP. After encapsulating VZV glycoprotein E (gE)-encoding mRNA, mgE@Syn-LNP induces robust humoral and cellular immune responses in two strains of mice. The magnitude of these responses is similar to that induced by adjuvanted recombinant gE proteins and significantly higher than that observed with live-attenuated VZV. mgE@Syn-LNP exhibits durable humoral responses for over 7 months without obvious adverse effects. In addition, mgE@Syn-LNP protects vaccinated guinea pigs against live VZV challenges. Preliminary studies on the mRNA antigen design reveal that the removal of glycosylation sites of gE greatly reduces its immune responses. Collectively, Syn-LNP encapsulating gE-encoded mRNA holds great promise as a shingles vaccine.
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Affiliation(s)
- Xingdi Cheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sujia Liu
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Jing Sun
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100029, China
| | - Lin Liu
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Xinghuan Ma
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Jingjiao Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bangda Fan
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Chen Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuanyuan Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuai Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yixing Wen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Simin Sun
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shiwei Mi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haonan Huo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Miao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Hao Pan
- Proxybio Therapeutics Co., Ltd., Shenzhen, 518001, China
| | - Xiaolan Cui
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100029, China
| | - Jiaqi Lin
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Xueguang Lu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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6
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Bagdonaite I, Marinova IN, Rudjord-Levann AM, Pallesen EMH, King-Smith SL, Karlsson R, Rømer TB, Chen YH, Miller RL, Olofsson S, Nordén R, Bergström T, Dabelsteen S, Wandall HH. Glycoengineered keratinocyte library reveals essential functions of specific glycans for all stages of HSV-1 infection. Nat Commun 2023; 14:7000. [PMID: 37919266 PMCID: PMC10622544 DOI: 10.1038/s41467-023-42669-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023] Open
Abstract
Viral and host glycans represent an understudied aspect of host-pathogen interactions, despite potential implications for treatment of viral infections. This is due to lack of easily accessible tools for analyzing glycan function in a meaningful context. Here we generate a glycoengineered keratinocyte library delineating human glycosylation pathways to uncover roles of specific glycans at different stages of herpes simplex virus type 1 (HSV-1) infectious cycle. We show the importance of cellular glycosaminoglycans and glycosphingolipids for HSV-1 attachment, N-glycans for entry and spread, and O-glycans for propagation. While altered virion surface structures have minimal effects on the early interactions with wild type cells, mutation of specific O-glycosylation sites affects glycoprotein surface expression and function. In conclusion, the data demonstrates the importance of specific glycans in a clinically relevant human model of HSV-1 infection and highlights the utility of genetic engineering to elucidate the roles of specific viral and cellular carbohydrate structures.
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Affiliation(s)
- Ieva Bagdonaite
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark.
| | - Irina N Marinova
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Asha M Rudjord-Levann
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Emil M H Pallesen
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Sarah L King-Smith
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Richard Karlsson
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Troels B Rømer
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Yen-Hsi Chen
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Rebecca L Miller
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Sigvard Olofsson
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, SE-41346, Gothenburg, Sweden
| | - Rickard Nordén
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, SE-41346, Gothenburg, Sweden
| | - Tomas Bergström
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, SE-41346, Gothenburg, Sweden
| | - Sally Dabelsteen
- Department of Odontology, University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Hans H Wandall
- Copenhagen Center for Glycomics, Institute of Cellular and Molecular Medicine, University of Copenhagen, DK-2200, Copenhagen, Denmark.
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7
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Pezzotti G, Ohgitani E, Imamura H, Ikegami S, Shin-Ya M, Adachi T, Adachi K, Yamamoto T, Kanamura N, Marin E, Zhu W, Higasa K, Yasukochi Y, Okuma K, Mazda O. Raman Multi-Omic Snapshot and Statistical Validation of Structural Differences between Herpes Simplex Type I and Epstein-Barr Viruses. Int J Mol Sci 2023; 24:15567. [PMID: 37958551 PMCID: PMC10647490 DOI: 10.3390/ijms242115567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/18/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023] Open
Abstract
Raman spectroscopy was applied to study the structural differences between herpes simplex virus Type I (HSV-1) and Epstein-Barr virus (EBV). Raman spectra were first collected with statistical validity on clusters of the respective virions and analyzed according to principal component analysis (PCA). Then, average spectra were computed and a machine-learning approach applied to deconvolute them into sub-band components in order to perform comparative analyses. The Raman results revealed marked structural differences between the two viral strains, which could mainly be traced back to the massive presence of carbohydrates in the glycoproteins of EBV virions. Clear differences could also be recorded for selected tyrosine and tryptophan Raman bands sensitive to pH at the virion/environment interface. According to the observed spectral differences, Raman signatures of known biomolecules were interpreted to link structural differences with the viral functions of the two strains. The present study confirms the unique ability of Raman spectroscopy for answering structural questions at the molecular level in virology and, despite the structural complexity of viral structures, its capacity to readily and reliably differentiate between different virus types and strains.
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Affiliation(s)
- Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-Ku, Matsugasaki, Kyoto 606-8585, Japan; (H.I.); (S.I.); (W.Z.)
- Department of Molecular Genetics, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shin-Machi, Hirakata 573-1010, Japan
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, 465 Kajii-Cho, Kyoto 602-8566, Japan; (E.O.); (M.S.-Y.); (T.A.); (O.M.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo 160-0023, Japan
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Department of Molecular Science and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Eriko Ohgitani
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, 465 Kajii-Cho, Kyoto 602-8566, Japan; (E.O.); (M.S.-Y.); (T.A.); (O.M.)
| | - Hayata Imamura
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-Ku, Matsugasaki, Kyoto 606-8585, Japan; (H.I.); (S.I.); (W.Z.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
| | - Saki Ikegami
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-Ku, Matsugasaki, Kyoto 606-8585, Japan; (H.I.); (S.I.); (W.Z.)
| | - Masaharu Shin-Ya
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, 465 Kajii-Cho, Kyoto 602-8566, Japan; (E.O.); (M.S.-Y.); (T.A.); (O.M.)
| | - Tetsuya Adachi
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, 465 Kajii-Cho, Kyoto 602-8566, Japan; (E.O.); (M.S.-Y.); (T.A.); (O.M.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
- Department of Microbiology, School of Medicine, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1010, Japan;
| | - Keiji Adachi
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-Ku, Matsugasaki, Kyoto 606-8585, Japan; (H.I.); (S.I.); (W.Z.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, Kyoto 602-8566, Japan; (K.A.); (T.Y.); (N.K.)
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-Ku, Matsugasaki, Kyoto 606-8585, Japan; (H.I.); (S.I.); (W.Z.)
| | - Koichiro Higasa
- Genome Analysis, Institute of Biomedical Science, Kansai Medical University, 2-3-1 Shinmachi, Hirakata 573-1191, Japan; (K.H.); (Y.Y.)
| | - Yoshiki Yasukochi
- Genome Analysis, Institute of Biomedical Science, Kansai Medical University, 2-3-1 Shinmachi, Hirakata 573-1191, Japan; (K.H.); (Y.Y.)
| | - Kazu Okuma
- Department of Microbiology, School of Medicine, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1010, Japan;
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-Ku, 465 Kajii-Cho, Kyoto 602-8566, Japan; (E.O.); (M.S.-Y.); (T.A.); (O.M.)
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8
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Wei L, Chen Y, Feng X, Yao J, Zhang L, Zhou X, Yan G, Qiu H, Wang C, Lu H. Elucidation of N-/ O-glycosylation and site-specific mapping of sialic acid linkage isomers of SARS-CoV-2 human receptor angiotensin-converting enzyme 2. Analyst 2023; 148:5002-5011. [PMID: 37728433 DOI: 10.1039/d3an01079a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Human angiotensin-converting enzyme 2 (hACE2) is the primary receptor for cellular entry of SARS-CoV-2 into human host cells. hACE2 is heavily glycosylated and glycans on the receptor may play a role in viral binding. Thus, comprehensive characterization of hACE2 glycosylation could aid our understanding of interactions between the receptor and SARS-CoV-2 spike (S) protein, as well as provide a basis for the development of therapeutic drugs targeting this crucial interaction. Herein, 138 N-glycan compositions were identified, most of which are complex-type N-glycans, from seven N-glycosites of hACE2. Among them, 67% contain at least one sialic acid residue. At the level of glycopeptides, the overall quantification of sialylated glycan isomers observed on the sites N322 and N546 have a higher degree of NeuAc (α2-3)Gal (over 80.3%) than that of other N-glycosites (35.6-71.0%). In terms of O-glycans, 69 glycan compositions from 12 O-glycosites were identified, and especially, the C-terminus of hACE2 is heavily O-glycosylated. The terminal sialic acid linkage type of H1N1S1 and H1N1S2 are covered highly with α2,3-sialic acid. These findings could aid the investigation of the interaction between SARS-CoV-2 and human host cells.
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Affiliation(s)
- Liming Wei
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Yuning Chen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences Department, 555 Zuchongzhi Road, 201203 Shanghai, China.
- School of Pharmacy, University of Chinese Academy of Sciences, No. 19A Yuquan Road, 100049 Beijing, China
| | - Xiaoxiao Feng
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Jun Yao
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Lei Zhang
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Xinwen Zhou
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Guoquan Yan
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
| | - Hong Qiu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences Department, 555 Zuchongzhi Road, 201203 Shanghai, China.
- School of Pharmacy, University of Chinese Academy of Sciences, No. 19A Yuquan Road, 100049 Beijing, China
| | - Chunhe Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences Department, 555 Zuchongzhi Road, 201203 Shanghai, China.
- School of Pharmacy, University of Chinese Academy of Sciences, No. 19A Yuquan Road, 100049 Beijing, China
| | - Haojie Lu
- Institutes of Biomedical Sciences and Department of Chemistry, Fudan University, 131 Dongan Road, 20032 Shanghai, China.
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9
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Olofsson S, Bally M, Trybala E, Bergström T. Structure and Role of O-Linked Glycans in Viral Envelope Proteins. Annu Rev Virol 2023; 10:283-304. [PMID: 37285578 DOI: 10.1146/annurev-virology-111821-121007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
N- and O-glycans are both important constituents of viral envelope glycoproteins. O-linked glycosylation can be initiated by any of 20 different human polypeptide O-acetylgalactosaminyl transferases, resulting in an important functional O-glycan heterogeneity. O-glycans are organized as solitary glycans or in clusters of multiple glycans forming mucin-like domains. They are functional both in the viral life cycle and in viral colonization of their host. Negatively charged O-glycans are crucial for the interactions between glycosaminoglycan-binding viruses and their host. A novel mechanism, based on controlled electrostatic repulsion, explains how such viruses solve the conflict between optimized viral attachment to target cells and efficient egress of progeny virus. Conserved solitary O-glycans appear important for viral uptake in target cells by contributing to viral envelope fusion. Dual roles of viral O-glycans in the host B cell immune response, either epitope blocking or epitope promoting, may be exploitable for vaccine development. Finally, specific virus-induced O-glycans may be involved in viremic spread.
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Affiliation(s)
- Sigvard Olofsson
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden;
| | - Marta Bally
- Department of Clinical Microbiology, Wallenberg Centre for Molecular Medicine and Umeå Centre for Microbial Research, Umeå University, Umeå, Sweden
| | - Edward Trybala
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden;
| | - Tomas Bergström
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden;
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10
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Gonzalez-Rodriguez E, Zol-Hanlon M, Bineva-Todd G, Marchesi A, Skehel M, Mahoney KE, Roustan C, Borg A, Di Vagno L, Kjær S, Wrobel AG, Benton DJ, Nawrath P, Flitsch SL, Joshi D, González-Ramírez A, Wilkinson KA, Wilkinson RJ, Wall EC, Hurtado-Guerrero R, Malaker SA, Schumann B. O-Linked Sialoglycans Modulate the Proteolysis of SARS-CoV-2 Spike and Likely Contribute to the Mutational Trajectory in Variants of Concern. ACS CENTRAL SCIENCE 2023; 9:393-404. [PMID: 36968546 PMCID: PMC10037455 DOI: 10.1021/acscentsci.2c01349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Indexed: 06/18/2023]
Abstract
The emergence of a polybasic cleavage motif for the protease furin in SARS-CoV-2 spike has been established as a major factor for human viral transmission. The region N-terminal to that motif is extensively mutated in variants of concern (VOCs). Besides furin, spikes from these variants appear to rely on other proteases for maturation, including TMPRSS2. Glycans near the cleavage site have raised questions about proteolytic processing and the consequences of variant-borne mutations. Here, we identify that sialic acid-containing O-linked glycans on Thr678 of SARS-CoV-2 spike influence furin and TMPRSS2 cleavage and posit O-linked glycosylation as a likely driving force for the emergence of VOC mutations. We provide direct evidence that the glycosyltransferase GalNAc-T1 primes glycosylation at Thr678 in the living cell, an event that is suppressed by mutations in the VOCs Alpha, Delta, and Omicron. We found that the sole incorporation of N-acetylgalactosamine did not impact furin activity in synthetic O-glycopeptides, but the presence of sialic acid reduced the furin rate by up to 65%. Similarly, O-glycosylation with a sialylated trisaccharide had a negative impact on TMPRSS2 cleavage. With a chemistry-centered approach, we substantiate O-glycosylation as a major determinant of spike maturation and propose disruption of O-glycosylation as a substantial driving force for VOC evolution.
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Affiliation(s)
- Edgar Gonzalez-Rodriguez
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
- Department
of Chemistry, Imperial College London, W12 0BZ London, United Kingdom
| | - Mia Zol-Hanlon
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
- Signalling
and Structural Biology Lab, The Francis
Crick Institute, NW1 1AT London, United Kingdom
| | - Ganka Bineva-Todd
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
| | - Andrea Marchesi
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
- Department
of Chemistry, Imperial College London, W12 0BZ London, United Kingdom
| | - Mark Skehel
- Proteomics
Science Technology Platform, The Francis
Crick Institute, NW1 1AT London, United Kingdom
| | - Keira E. Mahoney
- Department
of Chemistry, Yale University, 275 Prospect Street, 06511 New Haven, Connecticut, United States
| | - Chloë Roustan
- Structural
Biology Science Technology Platform, The
Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Annabel Borg
- Structural
Biology Science Technology Platform, The
Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Lucia Di Vagno
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
- Proteomics
Science Technology Platform, The Francis
Crick Institute, NW1 1AT London, United Kingdom
| | - Svend Kjær
- Structural
Biology Science Technology Platform, The
Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Antoni G. Wrobel
- Structural
Biology of Disease Processes Laboratory, Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Donald J. Benton
- Structural
Biology of Disease Processes Laboratory, Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Philipp Nawrath
- Structural
Biology of Disease Processes Laboratory, Francis Crick Institute, NW1 1AT London, United Kingdom
| | - Sabine L. Flitsch
- Manchester
Institute of Biotechnology, University of
Manchester, 131 Princess Street, M1 7DN Manchester, United Kingdom
| | - Dhira Joshi
- Chemical
Biology Science Technology Platform, The
Francis Crick Institute, NW1 1AT London, United Kingdom
| | | | - Katalin A. Wilkinson
- Tuberculosis
Laboratory, The Francis Crick Institute, NW1 1AT London, United Kingdom
- Wellcome
Centre for Infectious Diseases Research in Africa, University of Cape Town, 7925 Observatory, Cape Town, South Africa
| | - Robert J. Wilkinson
- Tuberculosis
Laboratory, The Francis Crick Institute, NW1 1AT London, United Kingdom
- Wellcome
Centre for Infectious Diseases Research in Africa, University of Cape Town, 7925 Observatory, Cape Town, South Africa
- Department
of Infectious Diseases, Imperial College
London, W12 0NN London, United Kingdom
- Institute
of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, 7925 Observatory, Cape Town, South Africa
| | - Emma C. Wall
- The Francis
Crick Institute, NW1 1AT London, United Kingdom
- University
College London Hospitals (UCLH) Biomedical Research Centre, W1T 7DN London, United Kingdom
| | - Ramón Hurtado-Guerrero
- Institute
of Biocomputation and Physics of Complex Systems, University of Zaragoza, 50018 Zaragoza, Spain
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Fundación
ARAID, 50018 Zaragoza, Spain
| | - Stacy A. Malaker
- Department
of Chemistry, Yale University, 275 Prospect Street, 06511 New Haven, Connecticut, United States
| | - Benjamin Schumann
- Chemical
Glycobiology Laboratory, The Francis Crick
Institute, NW1 1AT London, United Kingdom
- Department
of Chemistry, Imperial College London, W12 0BZ London, United Kingdom
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11
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"Glyco-sulfo barcodes" regulate chemokine receptor function. Cell Mol Life Sci 2023; 80:55. [PMID: 36729338 PMCID: PMC9894980 DOI: 10.1007/s00018-023-04697-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/16/2022] [Accepted: 01/09/2023] [Indexed: 02/03/2023]
Abstract
Chemokine ligands and receptors regulate the directional migration of leukocytes. Post-translational modifications of chemokine receptors including O-glycosylation and tyrosine sulfation have been reported to regulate ligand binding and resulting signaling. Through in silico analyses, we determined potential conserved O-glycosylation and sulfation sites on human and murine CC chemokine receptors. Glyco-engineered CHO cell lines were used to measure the impact of O-glycosylation on CC chemokine receptor CCR5, while mutation of tyrosine residues and treatment with sodium chlorate were performed to determine the effect of tyrosine sulfation. Changing the glycosylation or tyrosine sulfation on CCR5 reduced the receptor signaling by the more positively charged CCL5 and CCL8 more profoundly compared to the less charged CCL3. The loss of negatively charged sialic acids resulted only in a minor effect on CCL3-induced signal transduction. The enzymes GalNAc-T1 and GalNAc-T11 were shown to be involved in the process of chemokine receptor O-glycosylation. These results indicate that O-glycosylation and tyrosine sulfation are involved in the fine-tuning and recognition of chemokine interactions with CCR5 and the resulting signaling.
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12
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Human cytomegalovirus induces neuronal enolase to support virally mediated metabolic remodeling. Proc Natl Acad Sci U S A 2022; 119:e2205789119. [PMID: 36459650 PMCID: PMC9894225 DOI: 10.1073/pnas.2205789119] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Viruses depend on cellular metabolic resources to supply the energy and biomolecular building blocks necessary for their replication. Human cytomegalovirus (HCMV), a leading cause of birth defects and morbidity in immunosuppressed individuals, induces numerous metabolic activities that are important for productive infection. However, many of the mechanisms through which these metabolic activities are induced and how they contribute to infection are unclear. We find that HCMV infection of fibroblasts induces a neuronal gene signature as well as the expression of several metabolic enzyme isoforms that are typically expressed in other tissue types. Of these, the most substantially induced glycolytic gene was the neuron-specific isoform of enolase 2 (ENO2). Induction of ENO2 expression is important for HCMV-mediated glycolytic activation as well as for the virally induced remodeling of pyrimidine-sugar metabolism, which provides the glycosyl subunits necessary for protein glycosylation. Inhibition of ENO2 expression or activity reduced uridine diphosphate (UDP)-sugar pools, attenuated the accumulation of viral glycoproteins, and induced the accumulation of noninfectious viral particles. In addition, our data indicate that the induction of ENO2 expression depends on the HCMV UL38 protein. Collectively, our data indicate that HCMV infection induces a tissue atypical neuronal glycolytic enzyme to activate glycolysis and UDP-sugar metabolism, increase the accumulation of glycosyl building blocks, and enable the expression of an essential viral glycoprotein and the production of infectious virions.
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13
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Functional diversity: update of the posttranslational modification of Epstein-Barr virus coding proteins. Cell Mol Life Sci 2022; 79:590. [PMID: 36376593 DOI: 10.1007/s00018-022-04561-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022]
Abstract
Epstein-Barr virus (EBV), a human oncogenic herpesvirus with a typical life cycle consisting of latent phase and lytic phase, is associated with many human diseases. EBV can express a variety of proteins that enable the virus to affect host cell processes and evade host immunity. Additionally, these proteins provide a basis for the maintenance of viral infection, contribute to the formation of tumors, and influence the occurrence and development of related diseases. Posttranslational modifications (PTMs) are chemical modifications of proteins after translation and are very important to guarantee the proper biological functions of these proteins. Studies in the past have intensely investigated PTMs of EBV-encoded proteins. EBV regulates the progression of the latent phase and lytic phase by affecting the PTMs of its encoded proteins, which are critical for the development of EBV-associated human diseases. In this review, we summarize the PTMs of EBV-encoded proteins that have been discovered and studied thus far with focus on their effects on the viral life cycle.
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14
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Peng W, Rayaprolu V, Parvate AD, Pronker MF, Hui S, Parekh D, Shaffer K, Yu X, Saphire EO, Snijder J. Glycan shield of the ebolavirus envelope glycoprotein GP. Commun Biol 2022; 5:785. [PMID: 35927436 PMCID: PMC9352669 DOI: 10.1038/s42003-022-03767-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 07/25/2022] [Indexed: 11/09/2022] Open
Abstract
The envelope glycoprotein GP of the ebolaviruses is essential for host cell entry and the primary target of the host antibody response. GP is heavily glycosylated with up to 17 N-linked sites, numerous O-linked glycans in its disordered mucin-like domain (MLD), and three predicted C-linked mannosylation sites. Glycosylation is important for host cell attachment, GP stability and fusion activity, and shielding from neutralization by serum antibodies. Here, we use glycoproteomics to profile the site-specific glycosylation patterns of ebolavirus GP. We detect up to 16 unique O-linked glycosylation sites in the MLD, and two O-linked sites in the receptor-binding GP1 subunit. Multiple O-linked glycans are observed within N-linked glycosylation sequons, suggesting crosstalk between the two types of modifications. We confirmed C-mannosylation of W288 in full-length trimeric GP. We find complex glycosylation at the majority of N-linked sites, while the conserved sites N257 and especially N563 are enriched in unprocessed glycans, suggesting a role in host-cell attachment via DC-SIGN/L-SIGN. Our findings illustrate how N-, O-, and C-linked glycans together build the heterogeneous glycan shield of GP, guiding future immunological studies and functional interpretation of ebolavirus GP-antibody interactions. Site-specific N-, O-, and C-linked glycans are characterized in the ebolavirus envelope glycoprotein GP using mass spectrometry-based glycoproteomics.
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Affiliation(s)
- Weiwei Peng
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Vamseedhar Rayaprolu
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA.,Pacific Northwest Center for CryoEM, Portland, OR, 97225, USA
| | - Amar D Parvate
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA.,Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Matti F Pronker
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Sean Hui
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA.,Molecular Microbiology and Microbial Pathogenesis Program, Washington University School of Medicine, Saint Louis, MO, 63108, USA
| | - Diptiben Parekh
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA
| | - Kelly Shaffer
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA.,Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Xiaoying Yu
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA
| | - Erica O Saphire
- Center for Infectious Disease and Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA.,Department of Medicine, University of California, San Diego, La Jolla, CA, 92039, USA
| | - Joost Snijder
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands.
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15
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Gong Y, Qin S, Dai L, Tian Z. The glycosylation in SARS-CoV-2 and its receptor ACE2. Signal Transduct Target Ther 2021; 6:396. [PMID: 34782609 PMCID: PMC8591162 DOI: 10.1038/s41392-021-00809-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/10/2021] [Accepted: 10/24/2021] [Indexed: 02/05/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), a highly infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected more than 235 million individuals and led to more than 4.8 million deaths worldwide as of October 5 2021. Cryo-electron microscopy and topology show that the SARS-CoV-2 genome encodes lots of highly glycosylated proteins, such as spike (S), envelope (E), membrane (M), and ORF3a proteins, which are responsible for host recognition, penetration, binding, recycling and pathogenesis. Here we reviewed the detections, substrates, biological functions of the glycosylation in SARS-CoV-2 proteins as well as the human receptor ACE2, and also summarized the approved and undergoing SARS-CoV-2 therapeutics associated with glycosylation. This review may not only broad the understanding of viral glycobiology, but also provide key clues for the development of new preventive and therapeutic methodologies against SARS-CoV-2 and its variants.
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Affiliation(s)
- Yanqiu Gong
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China
| | - Suideng Qin
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China
| | - Lunzhi Dai
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China.
| | - Zhixin Tian
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China.
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16
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Cui Y, Dong X, Zhang X, Chen C, Fu D, Li X, Liang X. Deciphering the O-Glycosylation of HKU1 Spike Protein With the Dual-Functional Hydrophilic Interaction Chromatography Materials. Front Chem 2021; 9:707235. [PMID: 34485242 PMCID: PMC8414140 DOI: 10.3389/fchem.2021.707235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/13/2021] [Indexed: 01/21/2023] Open
Abstract
HKU1 is a human beta coronavirus and infects host cells via highly glycosylated spike protein (S). The N-glycosylation of HKU1 S has been reported. However, little is known about its O-glycosylation, which hinders the in-depth understanding of its biological functions. Herein, a comprehensive study of O-glycosylation of HKU1 S was carried out based on dual-functional histidine-bonded silica (HBS) materials. The enrichment method for O-glycopeptides with HBS was developed and validated using standard proteins. The application of the developed method to the HKU1 S1 subunit resulted in 46 novel O-glycosylation sites, among which 55.6% were predicted to be exposed on the outer protein surface. Moreover, the O-linked glycans and their abundance on each HKU1 S1 site were analyzed. The obtained O-glycosylation dataset will provide valuable insights into the structure of HKU1 S.
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Affiliation(s)
- Yun Cui
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Xuefang Dong
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xiaofei Zhang
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Cheng Chen
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Dongmei Fu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Xiuling Li
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xinmiao Liang
- Key Lab of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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17
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Wandall HH, Nielsen MAI, King-Smith S, de Haan N, Bagdonaite I. Global functions of O-glycosylation: promises and challenges in O-glycobiology. FEBS J 2021; 288:7183-7212. [PMID: 34346177 DOI: 10.1111/febs.16148] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/23/2021] [Accepted: 08/03/2021] [Indexed: 12/13/2022]
Abstract
Mucin type O-glycosylation is one of the most diverse types of glycosylation, playing essential roles in tissue development and homeostasis. In complex organisms, O-GalNAc glycans comprise a substantial proportion of the glycocalyx, with defined functions in hemostatic, gastrointestinal, and respiratory systems. Furthermore, O-GalNAc glycans are important players in host-microbe interactions, and changes in O-glycan composition are associated with certain diseases and metabolic conditions, which in some instances can be used for diagnosis or therapeutic intervention. Breakthroughs in O-glycobiology have gone hand in hand with the development of new technologies, such as advancements in mass spectrometry, as well as facilitation of genetic engineering in mammalian cell lines. High-throughput O-glycoproteomics have enabled us to draw a comprehensive map of O-glycosylation, and mining this information has supported the definition and confirmation of functions related to site-specific O-glycans. This includes protection from proteolytic cleavage, as well as modulation of binding affinity or receptor function. Yet, there is still much to discover, and among the important next challenges will be to define the context-dependent functions of O-glycans in different stages of cellular differentiation, cellular metabolism, host-microbiome interactions, and in disease. In this review, we present the achievements and the promises in O-GalNAc glycobiology driven by technological advances in analytical methods, genetic engineering, and systems biology.
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Affiliation(s)
- Hans H Wandall
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark
| | - Mathias A I Nielsen
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark
| | - Sarah King-Smith
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark
| | - Noortje de Haan
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark
| | - Ieva Bagdonaite
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark
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18
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Li X, Guo Y, Song Y, Sun R, Zhu M, Tan Z, Swaiba UE, Zhang L, Huang J. The glycosyltransferase ST3GAL2 modulates virus proliferation and the inflammation response in porcine reproductive and respiratory syndrome virus infection. Arch Virol 2021; 166:2723-2732. [PMID: 34319453 DOI: 10.1007/s00705-021-05180-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/10/2021] [Indexed: 11/27/2022]
Abstract
β-galactoside α-2,3-sialyltransferase 2 (ST3GAL2) is a member of the sialyltransferase family that mediates terminal modification of glycoproteins and glycolipids. ST3GAL2 has been found to play a role in obesity, aging, and malignant diseases. In this study, we cloned porcine ST3GAL2 (pST3GAL2) from porcine alveolar macrophages (PAMs), and its role in porcine reproductive and respiratory syndrome virus (PRRSV) infection was investigated by transcriptome analysis. pST3GAL2 was found to be located in the Golgi apparatus, and it was expressed at high levels in PRRSV-infected PAMs. Overexpression of pST3GAL2 resulted in a slight increase in PRRSV proliferation, and the interaction between pST3GAL2 and GP2a of PRRSV was detected by coimmunoprecipitation and confocal microscopy. The expression of pro-inflammatory cytokines (IFN-β, IL-2, IL-6, IL-18, IL-1β and TNF-α) was significantly inhibited in pST3GAL2-overexpressing, PRRSV-infected cells and upregulated in PRRSV-infected pST3GAL2-knockout cells, while the pattern of expression of anti-inflammatory cytokines (IL-4 and IL-10) was diametrically opposite. Our results demonstrate that the regulation of pST3GAL2 plays an important role in PRRSV proliferation and functional alterations in virus-infected cells. These results contribute to our understanding of the role of β-galactoside α-2,3-sialyltransferase 2 in antiviral immunity.
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Affiliation(s)
- Xiaoyang Li
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Yanyu Guo
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Yinna Song
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Ruiqi Sun
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Min Zhu
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Zheng Tan
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Umm E Swaiba
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Lilin Zhang
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China.
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19
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Wang HY, Valencia SM, Pfeifer SP, Jensen JD, Kowalik TF, Permar SR. Common Polymorphisms in the Glycoproteins of Human Cytomegalovirus and Associated Strain-Specific Immunity. Viruses 2021; 13:v13061106. [PMID: 34207868 PMCID: PMC8227702 DOI: 10.3390/v13061106] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 12/18/2022] Open
Abstract
Human cytomegalovirus (HCMV), one of the most prevalent viruses across the globe, is a common cause of morbidity and mortality for immunocompromised individuals. Recent clinical observations have demonstrated that mixed strain infections are common and may lead to more severe disease progression. This clinical observation illustrates the complexity of the HCMV genome and emphasizes the importance of taking a population-level view of genotypic evolution. Here we review frequently sampled polymorphisms in the glycoproteins of HCMV, comparing the variable regions, and summarizing their corresponding geographic distributions observed to date. The related strain-specific immunity, including neutralization activity and antigen-specific cellular immunity, is also discussed. Given that these glycoproteins are common targets for vaccine design and anti-viral therapies, this observed genetic variation represents an important resource for future efforts to combat HCMV infections.
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Affiliation(s)
- Hsuan-Yuan Wang
- Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA;
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA;
| | - Sarah M. Valencia
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA;
| | - Susanne P. Pfeifer
- Center for Evolution & Medicine, School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA; (S.P.P.); (J.D.J.)
| | - Jeffrey D. Jensen
- Center for Evolution & Medicine, School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA; (S.P.P.); (J.D.J.)
| | - Timothy F. Kowalik
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01655, USA;
| | - Sallie R. Permar
- Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA;
- Correspondence: ; Tel.: +1-212-746-4111
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20
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Bagdonaite I, Thompson AJ, Wang X, Søgaard M, Fougeroux C, Frank M, Diedrich JK, Yates JR, Salanti A, Vakhrushev SY, Paulson JC, Wandall HH. Site-Specific O-Glycosylation Analysis of SARS-CoV-2 Spike Protein Produced in Insect and Human Cells. Viruses 2021; 13:v13040551. [PMID: 33806155 PMCID: PMC8064498 DOI: 10.3390/v13040551] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/22/2022] Open
Abstract
Enveloped viruses hijack not only the host translation processes, but also its glycosylation machinery, and to a variable extent cover viral surface proteins with tolerogenic host-like structures. SARS-CoV-2 surface protein S presents as a trimer on the viral surface and is covered by a dense shield of N-linked glycans, and a few O-glycosites have been reported. The location of O-glycans is controlled by a large family of initiating enzymes with variable expression in cells and tissues and hence is difficult to predict. Here, we used our well-established O-glycoproteomic workflows to map the precise positions of O-linked glycosylation sites on three different entities of protein S—insect cell or human cell-produced ectodomains, or insect cell derived receptor binding domain (RBD). In total 25 O-glycosites were identified, with similar patterns in the two ectodomains of different cell origin, and a distinct pattern of the monomeric RBD. Strikingly, 16 out of 25 O-glycosites were located within three amino acids from known N-glycosites. However, O-glycosylation was primarily found on peptides that were unoccupied by N-glycans, and otherwise had low overall occupancy. This suggests possible complementary functions of O-glycans in immune shielding and negligible effects of O-glycosylation on subunit vaccine design for SARS-CoV-2.
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Affiliation(s)
- Ieva Bagdonaite
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, 2200 Copenhagen, Denmark;
- Correspondence: (I.B.); (H.H.W.)
| | - Andrew J. Thompson
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; (A.J.T.); (X.W.); (J.K.D.); (J.R.Y.III); (J.C.P.)
| | - Xiaoning Wang
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; (A.J.T.); (X.W.); (J.K.D.); (J.R.Y.III); (J.C.P.)
| | - Max Søgaard
- ExpreS2ion Biotechnologies, SCION-DTU Science Park, 2970 Hørsholm, Denmark;
| | - Cyrielle Fougeroux
- Centre for Medical Parasitology at Department of Immunology and Microbiology, University of Copenhagen and Department of Infectious Diseases, Copenhagen University Hospital, 2200 Copenhagen, Denmark; (C.F.); (A.S.)
- AdaptVac Aps, 2970 Hørsholm, Denmark
| | | | - Jolene K. Diedrich
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; (A.J.T.); (X.W.); (J.K.D.); (J.R.Y.III); (J.C.P.)
| | - John R. Yates
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; (A.J.T.); (X.W.); (J.K.D.); (J.R.Y.III); (J.C.P.)
| | - Ali Salanti
- Centre for Medical Parasitology at Department of Immunology and Microbiology, University of Copenhagen and Department of Infectious Diseases, Copenhagen University Hospital, 2200 Copenhagen, Denmark; (C.F.); (A.S.)
| | - Sergey Y. Vakhrushev
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, 2200 Copenhagen, Denmark;
| | - James C. Paulson
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA; (A.J.T.); (X.W.); (J.K.D.); (J.R.Y.III); (J.C.P.)
| | - Hans H. Wandall
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, 2200 Copenhagen, Denmark;
- Correspondence: (I.B.); (H.H.W.)
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21
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Site-specific O-glycosylation analysis of SARS-CoV-2 spike protein produced in insect and human cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021. [PMID: 33564762 PMCID: PMC7872350 DOI: 10.1101/2021.02.03.429627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Enveloped viruses hijack not only the host translation processes, but also its glycosylation machinery, and to a variable extent cover viral surface proteins with tolerogenic host-like structures. SARS-CoV-2 surface protein S presents as a trimer on the viral surface and is covered by a dense shield of N-linked glycans, and a few O-glycosites have been reported. The location of O-glycans is controlled by a large family of initiating enzymes with variable expression in cells and tissues and hence difficult to predict. Here, we used our well-established O-glycoproteomic workflows to map the precise positions of O-linked glycosylation sites on three different entities of protein S - insect cell or human cell-produced ectodomains, or insect cell derived receptor binding domain (RBD). In total 25 O-glycosites were identified, with similar patterns in the two ectodomains of different cell origin, and a distinct pattern of the monomeric RBD. Strikingly, 16 out of 25 O-glycosites were located within three amino acids from known N-glycosites. However, O-glycosylation was primarily found on peptides that were unoccupied by N-glycans, and otherwise had low overall occupancy. This suggests possible complementary functions of O-glycans in immune shielding and negligible effects of O-glycosylation on subunit vaccine design for SARS-CoV-2.
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22
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Affiliation(s)
- Tobias
P. Wörner
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Tatiana M. Shamorkina
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Joost Snijder
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Albert J. R. Heck
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
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23
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Mucin-Type O-GalNAc Glycosylation in Health and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1325:25-60. [PMID: 34495529 DOI: 10.1007/978-3-030-70115-4_2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mucin-type GalNAc O-glycosylation is one of the most abundant and unique post-translational modifications. The combination of proteome-wide mapping of GalNAc O-glycosylation sites and genetic studies with knockout animals and genome-wide analyses in humans have been instrumental in our understanding of GalNAc O-glycosylation. Combined, such studies have revealed well-defined functions of O-glycans at single sites in proteins, including the regulation of pro-protein processing and proteolytic cleavage, as well as modulation of receptor functions and ligand binding. In addition to isolated O-glycans, multiple clustered O-glycans have an important function in mammalian biology by providing structural support and stability of mucins essential for protecting our inner epithelial surfaces, especially in the airways and gastrointestinal tract. Here the many O-glycans also provide binding sites for both endogenous and pathogen-derived carbohydrate-binding proteins regulating critical developmental programs and helping maintain epithelial homeostasis with commensal organisms. Finally, O-glycan changes have been identified in several diseases, most notably in cancer and inflammation, where the disease-specific changes can be used for glycan-targeted therapies. This chapter will review the biosynthesis, the biology, and the translational perspectives of GalNAc O-glycans.
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24
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de Melo Silva J, Pinheiro-Silva R, Dhyani A, Pontes GS. Cytomegalovirus and Epstein-Barr Infections: Prevalence and Impact on Patients with Hematological Diseases. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1627824. [PMID: 33163531 PMCID: PMC7605947 DOI: 10.1155/2020/1627824] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022]
Abstract
Cytomegalovirus (CMV) and Epstein-Barr virus (EBV) infections are widely distributed throughout the world. EBV is linked to various hematological and autoimmune disorders whereas CMV might play important role in the progression of chronic hematological diseases, such as hemoglobinopathies, lymphomas, myelomas, hemophilia, and aplastic and sickle cell anemia. Both viruses produce a viral homolog of human interleukin-10 that can cause general suppression of immune response, increasing susceptibility to other infections. These viruses can remain latent in the host cells and be reactivated when the host immune system is compromised. Studies showing the impact of CMV and EBV infections on hematological disorders are scarce and unclear in the context of coinfection. This review intends to present the biology, prevalence, and impact of CMV and EBV infections in patients with hematological diseases.
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Affiliation(s)
- Jean de Melo Silva
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Renato Pinheiro-Silva
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Anamika Dhyani
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Gemilson Soares Pontes
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
- Laboratório de Virologia e Imunologia, Coordenação Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus-Amazonas, Brazil
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25
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Martínez-Vicente P, Farré D, Engel P, Angulo A. Divergent Traits and Ligand-Binding Properties of the Cytomegalovirus CD48 Gene Family. Viruses 2020; 12:v12080813. [PMID: 32731344 PMCID: PMC7472110 DOI: 10.3390/v12080813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/28/2022] Open
Abstract
The genesis of gene families by the capture of host genes and their subsequent duplication is a crucial process in the evolution of large DNA viruses. CD48 is a cell surface molecule that interacts via its N-terminal immunoglobulin (Ig) domain with the cell surface receptor 2B4 (CD244), regulating leukocyte cytotoxicity. We previously reported the presence of five CD48 homologs (vCD48s) in two related cytomegaloviruses, and demonstrated that one of them, A43, binds 2B4 and acts as a soluble CD48 decoy receptor impairing NK cell function. Here, we have characterized the rest of these vCD48s. We show that they are highly glycosylated proteins that display remarkably distinct features: divergent biochemical properties, cellular locations, and temporal expression kinetics. In contrast to A43, none of them interacts with 2B4. Consistent with this, molecular modeling of the N-terminal Ig domains of these vCD48s evidences notable changes as compared to CD48, suggesting that they interact with alternative targets. Accordingly, we demonstrate that one of them, S30, tightly binds CD2, a crucial T- and NK-cell adhesion and costimulatory molecule. Thus, our findings show how a key host immune receptor gene captured by a virus can be subsequently remodeled to evolve new immunoevasins with altered binding properties.
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Affiliation(s)
- Pablo Martínez-Vicente
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08036 Barcelona, Spain; (D.F.); (P.E.)
- Correspondence: (P.M.-V.); (A.A.)
| | - Domènec Farré
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08036 Barcelona, Spain; (D.F.); (P.E.)
| | - Pablo Engel
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08036 Barcelona, Spain; (D.F.); (P.E.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer, 08036 Barcelona, Spain
| | - Ana Angulo
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, 08036 Barcelona, Spain; (D.F.); (P.E.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer, 08036 Barcelona, Spain
- Correspondence: (P.M.-V.); (A.A.)
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26
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Khodadadi E, Zeinalzadeh E, Taghizadeh S, Mehramouz B, Kamounah FS, Khodadadi E, Ganbarov K, Yousefi B, Bastami M, Kafil HS. Proteomic Applications in Antimicrobial Resistance and Clinical Microbiology Studies. Infect Drug Resist 2020; 13:1785-1806. [PMID: 32606829 PMCID: PMC7305820 DOI: 10.2147/idr.s238446] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/23/2020] [Indexed: 12/11/2022] Open
Abstract
Sequences of the genomes of all-important bacterial pathogens of man, plants, and animals have been completed. Still, it is not enough to achieve complete information of all the mechanisms controlling the biological processes of an organism. Along with all advances in different proteomics technologies, proteomics has completed our knowledge of biological processes all around the world. Proteomics is a valuable technique to explain the complement of proteins in any organism. One of the fields that has been notably benefited from other systems approaches is bacterial pathogenesis. An emerging field is to use proteomics to examine the infectious agents in terms of, among many, the response the host and pathogen to the infection process, which leads to a deeper knowledge of the mechanisms of bacterial virulence. This trend also enables us to identify quantitative measurements for proteins extracted from microorganisms. The present review study is an attempt to summarize a variety of different proteomic techniques and advances. The significant applications in bacterial pathogenesis studies are also covered. Moreover, the areas where proteomics may lead the future studies are introduced.
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Affiliation(s)
- Ehsaneh Khodadadi
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Zeinalzadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepehr Taghizadeh
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahareh Mehramouz
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fadhil S Kamounah
- Department of Chemistry, University of Copenhagen, Copenhagen, DK 2100, Denmark
| | - Ehsan Khodadadi
- Department of Biology, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | | | - Bahman Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Milad Bastami
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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27
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Vollmer B, Grünewald K. Herpesvirus membrane fusion - a team effort. Curr Opin Struct Biol 2020; 62:112-120. [PMID: 31935542 DOI: 10.1016/j.sbi.2019.12.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/18/2019] [Accepted: 12/02/2019] [Indexed: 12/01/2022]
Abstract
One of the essential steps in every viral 'life' cycle is entry into the host cell. Membrane-enveloped viruses carry dedicated proteins to catalyse the fusion of the viral and cellular membrane. Herpesviruses feature a set of essential, structurally diverse glycoproteins on the viral surface that form a multicomponent fusion machinery, necessary for the entry mechanism. For Herpes simplex virus 1, these essential glycoproteins are gD, gH, gL and gB. In this review we describe the functions of the individual components, the potential interactions between them as well as the influence of post-translational modifications on the fusion mechanism.
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Affiliation(s)
- Benjamin Vollmer
- Centre for Structural Systems Biology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, University of Hamburg, Hamburg, Germany; Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Kay Grünewald
- Centre for Structural Systems Biology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, University of Hamburg, Hamburg, Germany; Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK.
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28
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Goth CK, Petäjä-Repo UE, Rosenkilde MM. G Protein-Coupled Receptors in the Sweet Spot: Glycosylation and other Post-translational Modifications. ACS Pharmacol Transl Sci 2020; 3:237-245. [PMID: 32296765 DOI: 10.1021/acsptsci.0c00016] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 12/11/2022]
Abstract
Post-translational modifications (PTMs) are a fundamental phenomenon across all classes of life and several hundred different types have been identified. PTMs contribute widely to the biological functions of proteins and greatly increase their diversity. One important class of proteins regulated by PTMs, is the cell surface expressed G protein-coupled receptors (GPCRs). While most PTMs have been shown to exert distinct biological functions, we are only beginning to approach the complexity that the potential interplay between different PTMs may have on biological functions and their regulation. Importantly, PTMs and their potential interplay represent an appealing mechanism for cell and tissue specific regulation of GPCR function and may partially contribute to functional selectivity of some GPCRs. In this review we highlight examples of PTMs located in GPCR extracellular domains, with special focus on glycosylation and the potential interplay with other close-by PTMs such as tyrosine sulfation, proteolytic cleavage, and phosphorylation.
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Affiliation(s)
- Christoffer K Goth
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, DK 2200, Denmark
| | - Ulla E Petäjä-Repo
- Medical Research Center Oulu, Research Unit of Biomedicine, University of Oulu, Oulu, FI-90014, Finland
| | - Mette M Rosenkilde
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, DK 2200, Denmark
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29
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Mehta AY, Heimburg-Molinaro J, Cummings RD, Goth CK. Emerging patterns of tyrosine sulfation and O-glycosylation cross-talk and co-localization. Curr Opin Struct Biol 2020; 62:102-111. [PMID: 31927217 DOI: 10.1016/j.sbi.2019.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/26/2019] [Accepted: 12/02/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Akul Y Mehta
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA, 02215, USA
| | - Jamie Heimburg-Molinaro
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA, 02215, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA, 02215, USA
| | - Christoffer K Goth
- Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA, 02215, USA
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30
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Virus-Like Particles and Nanoparticles for Vaccine Development against HCMV. Viruses 2019; 12:v12010035. [PMID: 31905677 PMCID: PMC7019358 DOI: 10.3390/v12010035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/21/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022] Open
Abstract
Human cytomegalovirus (HCMV) infects more than 70% of the human population worldwide. HCMV is responsible for high morbidity and mortality in immunocompromised patients and remains the leading viral cause of congenital birth defects. Despite considerable efforts in vaccine and therapeutic development, HCMV infection still represents an unmet clinical need and a life-threatening disease in immunocompromised individuals and newborns. Immune repertoire interrogation of HCMV seropositive patients allowed the identification of several potential antigens for vaccine design. However, recent HCMV vaccine clinical trials did not lead to a satisfactory outcome in term of efficacy. Therefore, combining antigens with orthogonal technologies to further increase the induction of neutralizing antibodies could improve the likelihood of a vaccine to reach protective efficacy in humans. Indeed, presentation of multiple copies of an antigen in a repetitive array is known to drive a more robust humoral immune response than its soluble counterpart. Virus-like particles (VLPs) and nanoparticles (NPs) are powerful platforms for multivalent antigen presentation. Several self-assembling proteins have been successfully used as scaffolds to present complex glycoprotein antigens on their surface. In this review, we describe some key aspects of the immune response to HCMV and discuss the scaffolds that were successfully used to increase vaccine efficacy against viruses with unmet medical need.
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31
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Watanabe Y, Bowden TA, Wilson IA, Crispin M. Exploitation of glycosylation in enveloped virus pathobiology. Biochim Biophys Acta Gen Subj 2019; 1863:1480-1497. [PMID: 31121217 PMCID: PMC6686077 DOI: 10.1016/j.bbagen.2019.05.012] [Citation(s) in RCA: 299] [Impact Index Per Article: 59.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/13/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022]
Abstract
Glycosylation is a ubiquitous post-translational modification responsible for a multitude of crucial biological roles. As obligate parasites, viruses exploit host-cell machinery to glycosylate their own proteins during replication. Viral envelope proteins from a variety of human pathogens including HIV-1, influenza virus, Lassa virus, SARS, Zika virus, dengue virus, and Ebola virus have evolved to be extensively glycosylated. These host-cell derived glycans facilitate diverse structural and functional roles during the viral life-cycle, ranging from immune evasion by glycan shielding to enhancement of immune cell infection. In this review, we highlight the imperative and auxiliary roles glycans play, and how specific oligosaccharide structures facilitate these functions during viral pathogenesis. We discuss the growing efforts to exploit viral glycobiology in the development of anti-viral vaccines and therapies.
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Affiliation(s)
- Yasunori Watanabe
- School of Biological Sciences and Institute of Life Sciences, University of Southampton, Southampton SO17 1BJ, UK; Division of Structural Biology, University of Oxford, Wellcome Centre for Human Genetics, Oxford OX3 7BN, UK; Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Thomas A Bowden
- Division of Structural Biology, University of Oxford, Wellcome Centre for Human Genetics, Oxford OX3 7BN, UK
| | - Ian A Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Max Crispin
- School of Biological Sciences and Institute of Life Sciences, University of Southampton, Southampton SO17 1BJ, UK.
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32
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Chen Z, Huang J, Li L. Recent advances in mass spectrometry (MS)-based glycoproteomics in complex biological samples. Trends Analyt Chem 2019; 118:880-892. [PMID: 31579312 PMCID: PMC6774629 DOI: 10.1016/j.trac.2018.10.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Protein glycosylation plays a key role in various biological processes and disease-related pathological progression. Mass spectrometry (MS)-based glycoproteomics is a powerful approach that provides a system-wide profiling of the glycoproteome in a high-throughput manner. There have been numerous significant technological advances in this field, including improved glycopeptide enrichment, hybrid fragmentation techniques, emerging specialized software packages, and effective quantitation strategies, as well as more dedicated workflows. With increasingly sophisticated glycoproteomics tools on hand, researchers have extensively adapted this approach to explore different biological systems both in terms of in-depth glycoproteome profiling and comparative glycoproteome analysis. Quantitative glycoproteomics enables researchers to discover novel glycosylation-based biomarkers in various diseases with potential to offer better sensitivity and specificity for disease diagnosis. In this review, we present recent methodological developments in MS-based glycoproteomics and highlight its utility and applications in answering various questions in complex biological systems.
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Affiliation(s)
- Zhengwei Chen
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Junfeng Huang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53705, USA
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- School of Life Sciences, Tianjin University, Tianjin, 300072, China
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33
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Chen Z, Huang J, Li L. Recent advances in mass spectrometry (MS)-based glycoproteomics in complex biological samples. Trends Analyt Chem 2019. [PMID: 31579312 DOI: 10.1016/jtrac.2018.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Protein glycosylation plays a key role in various biological processes and disease-related pathological progression. Mass spectrometry (MS)-based glycoproteomics is a powerful approach that provides a system-wide profiling of the glycoproteome in a high-throughput manner. There have been numerous significant technological advances in this field, including improved glycopeptide enrichment, hybrid fragmentation techniques, emerging specialized software packages, and effective quantitation strategies, as well as more dedicated workflows. With increasingly sophisticated glycoproteomics tools on hand, researchers have extensively adapted this approach to explore different biological systems both in terms of in-depth glycoproteome profiling and comparative glycoproteome analysis. Quantitative glycoproteomics enables researchers to discover novel glycosylation-based biomarkers in various diseases with potential to offer better sensitivity and specificity for disease diagnosis. In this review, we present recent methodological developments in MS-based glycoproteomics and highlight its utility and applications in answering various questions in complex biological systems.
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Affiliation(s)
- Zhengwei Chen
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Junfeng Huang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53705, USA
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
- School of Life Sciences, Tianjin University, Tianjin, 300072, China
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34
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Smargiasso N, Nader J, Rioux S, Mazzucchelli G, Boutry M, De Pauw E, Chaumont F, Navarre C. Exploring the N-Glycosylation Profile of Glycoprotein B from Human Cytomegalovirus Expressed in CHO and Nicotiana tabacum BY-2 Cells. Int J Mol Sci 2019; 20:E3741. [PMID: 31370181 PMCID: PMC6696289 DOI: 10.3390/ijms20153741] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/23/2019] [Accepted: 07/30/2019] [Indexed: 02/01/2023] Open
Abstract
The ability to control the glycosylation pattern of recombinant viral glycoproteins represents a major prerequisite before their use as vaccines. The aim of this study consisted of expressing the large soluble ectodomain of glycoprotein B (gB) from Human Cytomegalovirus (HMCV) in Nicotiana tabacum Bright Yellow-2 (BY-2) suspension cells and of comparing its glycosylation profile with that of gB produced in Chinese hamster ovary (CHO) cells. gB was secreted in the BY-2 culture medium at a concentration of 20 mg/L and directly purified by ammonium sulfate precipitation and size exclusion chromatography. We then measured the relative abundance of N-glycans present on 15 (BY-2) and 17 (CHO) out of the 18 N-sites by multienzymatic proteolysis and mass spectrometry. The glycosylation profile differed at each N-site, some sites being occupied exclusively by oligomannosidic type N-glycans and others by complex N-glycans processed in some cases with additional Lewis A structures (BY-2) or with beta-1,4-galactose and sialic acid (CHO). The profiles were strikingly comparable between BY-2- and CHO-produced gB. These results suggest a similar gB conformation when glycoproteins are expressed in plant cells as site accessibility influences the glycosylation profile at each site. These data thus strengthen the BY-2 suspension cultures as an alternative expression system.
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Affiliation(s)
- Nicolas Smargiasso
- Mass Spectrometry Laboratory-MolSys, GIGA Proteomics Facility, University of Liège, 4000 Liège, Belgium
| | - Joseph Nader
- Louvain Institute for Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | | | - Gabriel Mazzucchelli
- Mass Spectrometry Laboratory-MolSys, GIGA Proteomics Facility, University of Liège, 4000 Liège, Belgium
| | - Marc Boutry
- Louvain Institute for Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Edwin De Pauw
- Mass Spectrometry Laboratory-MolSys, GIGA Proteomics Facility, University of Liège, 4000 Liège, Belgium
| | - François Chaumont
- Louvain Institute for Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium.
| | - Catherine Navarre
- Louvain Institute for Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
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35
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Whittaker K, Burgess R, Jones V, Yang Y, Zhou W, Luo S, Wilson J, Huang R. Quantitative proteomic analyses in blood: A window to human health and disease. J Leukoc Biol 2019; 106:759-775. [PMID: 31329329 DOI: 10.1002/jlb.mr1118-440r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/11/2019] [Accepted: 06/24/2019] [Indexed: 12/13/2022] Open
Affiliation(s)
| | | | | | | | | | - Shuhong Luo
- RayBiotech Life Norcross Georgia USA
- RayBiotech Life Guangzhou Guangdong China
- South China Biochip Research Center Guangzhou Guangdong China
| | | | - Ruo‐Pan Huang
- RayBiotech Life Norcross Georgia USA
- RayBiotech Life Guangzhou Guangdong China
- South China Biochip Research Center Guangzhou Guangdong China
- Affiliated Cancer Hospital & Institute of Guangzhou Medical UniversityGuangzhou Medical University Guangzhou China
- Guangdong Provincial Hospital of Chinese Medicine Guangzhou China
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36
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Zur Hausen H, Bund T, de Villiers EM. Infectious Agents in Bovine Red Meat and Milk and Their Potential Role in Cancer and Other Chronic Diseases. Curr Top Microbiol Immunol 2019; 407:83-116. [PMID: 28349283 DOI: 10.1007/82_2017_3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Red meat and dairy products have frequently been suggested to represent risk factors for certain cancers, chronic neurodegenerative diseases, and autoimmune and cardiovascular disorders. This review summarizes the evidence and investigates the possible involvement of infectious factors in these diseases. The isolation of small circular single-stranded DNA molecules from serum and dairy products of Eurasian Aurochs (Bos taurus)-derived cattle, obviously persisting as episomes in infected cells, provides the basis for further investigations. Gene expression of these agents in human cells has been demonstrated, and frequent infection of humans is implicated by the detection of antibodies in a high percentage of healthy individuals. Epidemiological observations suggest their relationship to the development multiple sclerosis, to heterophile antibodies, and to N-glycolylneuraminic acid (Neu5Gc) containing cell surface receptors.
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Affiliation(s)
- Harald Zur Hausen
- Deutsches Krebsforschungszentrum, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
| | - Timo Bund
- Deutsches Krebsforschungszentrum, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
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37
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Hargett AA, Renfrow MB. Glycosylation of viral surface proteins probed by mass spectrometry. Curr Opin Virol 2019; 36:56-66. [PMID: 31202133 PMCID: PMC7102858 DOI: 10.1016/j.coviro.2019.05.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/17/2022]
Abstract
Glycosylation is a common and biologically significant post-translational modification that is found on numerous virus surface proteins (VSPs). Many of these glycans affect virulence through modulating virus receptor binding, masking antigenic sites, or by stimulating the host immune response. Mass spectrometry (MS) has arisen as a pivotal technique for the characterization of VSP glycosylation. This review will cover how MS-based analyses, such as released glycan profiles, glycan site localization, site-occupancy, and site-specific heterogeneity, are being utilized to map VSP glycosylation. Furthermore, this review will provide information on how MS glycoprofiling data are being used in conjunction with molecular and structural experiments to provide a better understanding of the role of specific glycans in VSP function.
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Affiliation(s)
- Audra A Hargett
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Matthew B Renfrow
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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38
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Hansen LH, Madsen TD, Goth CK, Clausen H, Chen Y, Dzhoyashvili N, Iyer SR, Sangaralingham SJ, Burnett JC, Rehfeld JF, Vakhrushev SY, Schjoldager KT, Goetze JP. Discovery of O-glycans on atrial natriuretic peptide (ANP) that affect both its proteolytic degradation and potency at its cognate receptor. J Biol Chem 2019; 294:12567-12578. [PMID: 31186350 DOI: 10.1074/jbc.ra119.008102] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 06/03/2019] [Indexed: 12/11/2022] Open
Abstract
Atrial natriuretic peptide (ANP) is a peptide hormone that in response to atrial stretch is secreted from atrial myocytes into the circulation, where it stimulates vasodilatation and natriuresis. ANP is an important biomarker of heart failure where low plasma concentrations exclude cardiac dysfunction. ANP is a member of the natriuretic peptide (NP) family, which also includes the B-type natriuretic peptide (BNP) and the C-type natriuretic peptide. The proforms of these hormones undergo processing to mature peptides, and for proBNP, this process has previously been demonstrated to be regulated by O-glycosylation. It has been suggested that proANP also may undergo post-translational modifications. Here, we conducted a targeted O-glycoproteomics approach to characterize O-glycans on NPs and demonstrate that all NP members can carry O-glycans. We identified four O-glycosites in proANP in the porcine heart, and surprisingly, two of these were located on the mature bioactive ANP itself. We found that one of these glycans is located within a conserved sequence motif of the receptor-binding region, suggesting that O-glycans may serve a function beyond intracellular processing and maturation. We also identified an O-glycoform of proANP naturally occurring in human circulation. We demonstrated that site-specific O-glycosylation shields bioactive ANP from proteolytic degradation and modifies potency at its cognate receptor in vitro Furthermore, we showed that ANP O-glycosylation attenuates acute renal and cardiovascular ANP actions in vivo The discovery of novel glycosylated ANP proteoforms reported here significantly improves our understanding of cardiac endocrinology and provides important insight into the etiology of heart failure.
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Affiliation(s)
- Lasse H Hansen
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, 2100 Copenhagen, Denmark,Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Thomas Daugbjerg Madsen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Christoffer K Goth
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Yang Chen
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Nina Dzhoyashvili
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Seethalakshmi R Iyer
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - S Jeson Sangaralingham
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - John C Burnett
- Cardiorenal Research Laboratory, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Jens F Rehfeld
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, 2100 Copenhagen, Denmark
| | - Sergey Y Vakhrushev
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Katrine T Schjoldager
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Jens P Goetze
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, 2100 Copenhagen, Denmark .,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 3 Blegdamsvej, 2200 Copenhagen, Denmark
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39
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Meal for Two: Human Cytomegalovirus-Induced Activation of Cellular Metabolism. Viruses 2019; 11:v11030273. [PMID: 30893762 PMCID: PMC6466105 DOI: 10.3390/v11030273] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 12/18/2022] Open
Abstract
Viruses are parasites that depend on the host cell’s metabolic resources to provide the energy and molecular building blocks necessary for the production of viral progeny. It has become increasingly clear that viruses extensively modulate the cellular metabolic network to support productive infection. Here, we review the numerous ways through which human cytomegalovirus (HCMV) modulates cellular metabolism, highlighting known mechanisms of HCMV-mediated metabolic manipulation and identifying key outstanding questions that remain to be addressed.
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40
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Recombinant Glycoprotein E of Varicella Zoster Virus Contains Glycan-Peptide Motifs That Modulate B Cell Epitopes into Discrete Immunological Signatures. Int J Mol Sci 2019; 20:ijms20040954. [PMID: 30813247 PMCID: PMC6412795 DOI: 10.3390/ijms20040954] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 12/18/2022] Open
Abstract
A recombinant subunit vaccine (Shingrix®) was recently licensed for use against herpes zoster. This vaccine is based on glycoprotein E (gE) of varicella zoster virus (VZV), the most abundantly expressed protein of VZV, harboring sites for N- and O-linked glycosylation. The subunit vaccine elicits stronger virus-specific CD4+ T cell response as well as antibody B cell response to gE, compared to the currently used live attenuated vaccine (Zostavax®). This situation is at variance with the current notion since a live vaccine, causing an active virus infection, should be far more efficient than a subunit vaccine based on only one single viral glycoprotein. We previously found gE to be heavily glycosylated, not least by numerous clustered O-linked glycans, when it was produced in human fibroblasts. However, in contrast to Zostavax®, which is produced in fibroblasts, the recombinant gE of Shingrix® is expressed in Chinese hamster ovary (CHO) cells. Hence, the glycan occupancy and glycan structures of gE may differ considerably between the two vaccine types. Here, we aimed at (i) defining the glycan structures and positions of recombinant gE and (ii) identifying possible features of the recombinant gE O-glycosylation pattern contributing to the vaccine efficacy of Shingrix®. Firstly, recombinant gE produced in CHO cells (“Shingrix situation”) is more scarcely decorated by O-linked glycans than gE from human fibroblasts (“Zostavax situation”), with respect to glycan site occupancy. Secondly, screening of immunodominant B cell epitopes of gE, using a synthetic peptide library against serum samples from VZV-seropositive individuals, revealed that the O-linked glycan signature promoted binding of IgG antibodies via a decreased number of interfering O-linked glycans, but also via specific O-linked glycans enhancing antibody binding. These findings may, in part, explain the higher protective efficacy of Shingrix®, and can also be of relevance for development of subunit vaccines to other enveloped viruses.
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41
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Simon EJ, Linstedt AD. Site-specific glycosylation of Ebola virus glycoprotein by human polypeptide GalNAc-transferase 1 induces cell adhesion defects. J Biol Chem 2018; 293:19866-19873. [PMID: 30389789 PMCID: PMC6314128 DOI: 10.1074/jbc.ra118.005375] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/31/2018] [Indexed: 01/26/2023] Open
Abstract
The surface glycoprotein (GP) of Ebola virus causes many of the virus's pathogenic effects, including a dramatic loss of endothelial cell adhesion associated with widespread hemorrhaging during infection. Although the GP-mediated deadhesion depends on its extracellular mucin-like domain, it is unknown whether any, or all, of this domain's densely clustered O-glycosylation sites are required. It is also unknown whether any of the 20 distinct polypeptide GalNAc-transferases (ppGalNAc-Ts) that initiate mucin-type O-glycosylation in human cells are functionally required. Here, using HEK293 cell lines lacking specific glycosylation enzymes, we demonstrate that GP requires extended O-glycans to exert its deadhesion effect. We also identified ppGalNAc-T1 as largely required for the GP-mediated adhesion defects. Despite its profound effect on GP function, the absence of ppGalNAc-T1 only modestly reduced the O-glycan mass of GP, indicating that even small changes in the bulky glycodomain can cause loss of GP function. Indeed, protein-mapping studies identified a small segment of the mucin-like domain critical for function and revealed that mutation of five glycan acceptor sites within this segment are sufficient to abrogate GP function. Together, these results argue against a mechanism of Ebola GP-induced cell detachment that depends solely on ectodomain bulkiness and identify a single host-derived glycosylation enzyme, ppGalNAc-T1, as a potential target for therapeutic intervention against Ebola virus disease.
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Affiliation(s)
- Emily J Simon
- From the Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
| | - Adam D Linstedt
- From the Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
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42
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Bagdonaite I, Wandall HH. Global aspects of viral glycosylation. Glycobiology 2018; 28:443-467. [PMID: 29579213 PMCID: PMC7108637 DOI: 10.1093/glycob/cwy021] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 03/21/2018] [Indexed: 12/15/2022] Open
Abstract
Enveloped viruses encompass some of the most common human pathogens causing infections of different severity, ranging from no or very few symptoms to lethal disease as seen with the viral hemorrhagic fevers. All enveloped viruses possess an envelope membrane derived from the host cell, modified with often heavily glycosylated virally encoded glycoproteins important for infectivity, viral particle formation and immune evasion. While N-linked glycosylation of viral envelope proteins is well characterized with respect to location, structure and site occupancy, information on mucin-type O-glycosylation of these proteins is less comprehensive. Studies on viral glycosylation are often limited to analysis of recombinant proteins that in most cases are produced in cell lines with a glycosylation capacity different from the capacity of the host cells. The glycosylation pattern of the produced recombinant glycoproteins might therefore be different from the pattern on native viral proteins. In this review, we provide a historical perspective on analysis of viral glycosylation, and summarize known roles of glycans in the biology of enveloped human viruses. In addition, we describe how to overcome the analytical limitations by using a global approach based on mass spectrometry to identify viral O-glycosylation in virus-infected cell lysates using the complex enveloped virus herpes simplex virus type 1 as a model. We underscore that glycans often pay important contributions to overall protein structure, function and immune recognition, and that glycans represent a crucial determinant for vaccine design. High throughput analysis of glycosylation on relevant glycoprotein formulations, as well as data compilation and sharing is therefore important to identify consensus glycosylation patterns for translational applications.
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Affiliation(s)
- Ieva Bagdonaite
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen N, Denmark
| | - Hans H Wandall
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen N, Denmark
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43
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Narimatsu H, Kaji H, Vakhrushev SY, Clausen H, Zhang H, Noro E, Togayachi A, Nagai-Okatani C, Kuno A, Zou X, Cheng L, Tao SC, Sun Y. Current Technologies for Complex Glycoproteomics and Their Applications to Biology/Disease-Driven Glycoproteomics. J Proteome Res 2018; 17:4097-4112. [PMID: 30359034 DOI: 10.1021/acs.jproteome.8b00515] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Glycoproteomics is an important recent advance in the field of glycoscience. In glycomics, glycan structures are comprehensively analyzed after glycans are released from glycoproteins. However, a major limitation of glycomics is the lack of insight into glycoprotein functions. The Biology/Disease-driven Human Proteome Project has a particular focus on biological and medical applications. Glycoproteomics technologies aimed at obtaining a comprehensive understanding of intact glycoproteins, i.e., the kind of glycan structures that are attached to particular amino acids and proteins, have been developed. This Review focuses on the recent progress of the technologies and their applications. First, the methods for large-scale identification of both N- and O-glycosylated proteins are summarized. Next, the progress of analytical methods for intact glycopeptides is outlined. MS/MS-based methods were developed for improving the sensitivity and speed of the mass spectrometer, in parallel with the software for complex spectrum assignment. In addition, a unique approach to identify intact glycopeptides using MS1-based accurate masses is introduced. Finally, as an advance of glycomics, two approaches to provide the spatial distribution of glycans in cells are described, i.e., MS imaging and lectin microarray. These methods allow rapid glycomic profiling of different types of biological samples and thus facilitate glycoproteomics.
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Affiliation(s)
- Hisashi Narimatsu
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Hiroyuki Kaji
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Sergey Y Vakhrushev
- Copenhagen Center for Glycomics , University of Copenhagen , Blegdamsvej 3 , Copenhagen 2200 , Denmark
| | - Henrik Clausen
- Copenhagen Center for Glycomics , University of Copenhagen , Blegdamsvej 3 , Copenhagen 2200 , Denmark
| | - Hui Zhang
- Center for Biomarker Discovery and Translation , Johns Hopkins University , 400 North Broadway , Baltimore , Maryland 21205 , United States
| | - Erika Noro
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Akira Togayachi
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Chiaki Nagai-Okatani
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Atsushi Kuno
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan
| | - Xia Zou
- Biotechnology Research Institute for Drug Discovery , National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono , Tsukuba , Ibaraki 305-8568 , Japan.,Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education) , Shanghai Jiao Tong University , 800 Dong Chuan Road , Minhang , Shanghai 200240 , P.R. China
| | - Li Cheng
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education) , Shanghai Jiao Tong University , 800 Dong Chuan Road , Minhang , Shanghai 200240 , P.R. China
| | - Sheng-Ce Tao
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education) , Shanghai Jiao Tong University , 800 Dong Chuan Road , Minhang , Shanghai 200240 , P.R. China
| | - Yangyang Sun
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education) , Shanghai Jiao Tong University , 800 Dong Chuan Road , Minhang , Shanghai 200240 , P.R. China
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44
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Bagdonaite I, Vakhrushev SY, Joshi HJ, Wandall HH. Viral glycoproteomes: technologies for characterization and outlook for vaccine design. FEBS Lett 2018; 592:3898-3920. [PMID: 29961944 DOI: 10.1002/1873-3468.13177] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/13/2018] [Accepted: 06/26/2018] [Indexed: 12/27/2022]
Abstract
It has long been known that surface proteins of most enveloped viruses are covered with glycans. It has furthermore been demonstrated that glycosylation is essential for propagation and immune evasion for many viruses. The recent development of high-resolution mass spectrometry techniques has enabled identification not only of the precise structures but also the positions of such post-translational modifications on viruses, revealing substantial differences in extent of glycosylation and glycan maturation for different classes of viruses. In-depth characterization of glycosylation and other post-translational modifications of viral envelope glycoproteins is essential for rational design of vaccines and antivirals. In this Review, we provide an overview of techniques used to address viral glycosylation and summarize information on glycosylation of enveloped viruses representing ongoing public health challenges. Furthermore, we discuss how knowledge on glycosylation can be translated to means to prevent and combat viral infections.
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Affiliation(s)
- Ieva Bagdonaite
- Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, University of Copenhagen, Denmark
| | - Sergey Y Vakhrushev
- Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, University of Copenhagen, Denmark
| | - Hiren J Joshi
- Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, University of Copenhagen, Denmark
| | - Hans H Wandall
- Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, University of Copenhagen, Denmark
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45
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Affiliation(s)
- David J. Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Biological Sciences and the Institute for Life Sciences, University of Southampton, Southampton, SO17 1BJ, UK
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46
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King SL, Goth CK, Eckhard U, Joshi HJ, Haue AD, Vakhrushev SY, Schjoldager KT, Overall CM, Wandall HH. TAILS N-terminomics and proteomics reveal complex regulation of proteolytic cleavage by O-glycosylation. J Biol Chem 2018; 293:7629-7644. [PMID: 29593093 PMCID: PMC5961060 DOI: 10.1074/jbc.ra118.001978] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/27/2018] [Indexed: 12/31/2022] Open
Abstract
Proteolytic processing is an irreversible post-translational modification functioning as a ubiquitous regulator of cellular activity. Protease activity is tightly regulated via control of gene expression, enzyme and substrate compartmentalization, zymogen activation, enzyme inactivation, and substrate availability. Emerging evidence suggests that proteolysis can also be regulated by substrate glycosylation and that glycosylation of individual sites on a substrate can decrease or, in rare cases, increase its sensitivity to proteolysis. Here, we investigated the relationship between site-specific, mucin-type (or GalNAc-type) O-glycosylation and proteolytic cleavage of extracellular proteins. Using in silico analysis, we found that O-glycosylation and cleavage sites are significantly associated with each other. We then used a positional proteomic strategy, terminal amine isotopic labeling of substrates (TAILS), to map the in vivo cleavage sites in HepG2 SimpleCells with and without one of the key initiating GalNAc transferases, GalNAc-T2, and after treatment with exogenous matrix metalloproteinase 9 (MMP9) or neutrophil elastase. Surprisingly, we found that loss of GalNAc-T2 not only increased cleavage, but also decreased cleavage across a broad range of other substrates, including key regulators of the protease network. We also found altered processing of several central regulators of lipid homeostasis, including apolipoprotein B and the phospholipid transfer protein, providing new clues to the previously reported link between GALNT2 and lipid homeostasis. In summary, we show that loss of GalNAc-T2 O-glycosylation leads to a general decrease in cleavage and that GalNAc-T2 O-glycosylation affects key regulators of the cellular proteolytic network, including multiple members of the serpin family.
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Affiliation(s)
- Sarah L King
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Christoffer K Goth
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Ulrich Eckhard
- the Centre for Blood Research, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Hiren J Joshi
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Amalie D Haue
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Sergey Y Vakhrushev
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Katrine T Schjoldager
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
| | - Christopher M Overall
- the Centre for Blood Research, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Hans H Wandall
- From the Department of Cellular and Molecular Medicine, Centre for Glycomics, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark and
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47
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A Prominent Role of the Human Cytomegalovirus UL8 Glycoprotein in Restraining Proinflammatory Cytokine Production by Myeloid Cells at Late Times during Infection. J Virol 2018; 92:JVI.02229-17. [PMID: 29467314 DOI: 10.1128/jvi.02229-17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/14/2018] [Indexed: 01/21/2023] Open
Abstract
Human cytomegalovirus (HCMV) persistence in infected individuals relies on a plethora of mechanisms to efficiently reduce host immune responses. To that end, HCMV uses a variety of gene products, some of which have not been identified yet. Here we characterized the UL8 gene, which consists of two exons, sharing the first with the HCMV RL11 family member UL7 UL8 is a transmembrane protein with an N-terminal immunoglobulin (Ig)-like domain in common with UL7 but with an extended stalk and a distinctive cytoplasmic tail. The UL8 open reading frame gives rise to a heavily glycosylated protein predominantly expressed on the cell surface, from where it can be partially endocytosed and subsequently degraded. Infections with UL8-tagged viruses indicated that UL8 was synthesized with late-phase kinetics. By virtue of its highly conserved Ig-like domain, this viral protein interacted with a surface molecule present on activated neutrophils. Notably, when ectopically expressed in THP-1 myeloid cells, UL8 was able to significantly reduce the production of a variety of proinflammatory cytokines. Mutations in UL8 indicated that this functional effect was mediated by the cell surface expression of its Ig-like domain. To investigate the impact of the viral protein in the infection context, we engineered HCMVs lacking the UL8 gene and demonstrated that UL8 decreases the release of a large number of proinflammatory factors at late times after infection of THP-1 cells. Our data indicate that UL8 may exert an immunosuppressive role key for HCMV survival in the host.IMPORTANCE HCMV is a major pathogen that causes life-threatening diseases and disabilities in infected newborns and immunocompromised individuals. Containing one of the largest genomes among all reported human viruses, HCMV encodes an impressive repertoire of gene products. However, the functions of a large proportion of them still remain unknown, a fact that complicates the design of new therapeutic approaches to prevent or treat HCMV-associated diseases. In this report, we have conducted an extensive study of UL8, one of the previously uncharacterized HCMV open reading frames. We found that the UL8 protein is expressed at late times postinfection and utilized by HCMV to reduce the production of proinflammatory factors by infected myeloid cells. Thus, the work presented here points to a key role of UL8 as a novel HCMV immune modulator capable of restraining host antiviral defenses.
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Zhang L, Ren J, Shi P, Lu D, Zhao C, Su Y, Zhang L, Huang J. The Immunological Regulation Roles of Porcine β-1, 4 Galactosyltransferase V (B4GALT5) in PRRSV Infection. Front Cell Infect Microbiol 2018; 8:48. [PMID: 29546034 PMCID: PMC5837993 DOI: 10.3389/fcimb.2018.00048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 02/09/2018] [Indexed: 11/13/2022] Open
Abstract
B4GALT5, also known as β-1, 4 galactosyltransferase V, is one of the members of β-1, 4 galactosyltransferase gene (B4GALT) family, which was concerned with embryonic development, tumor generation, other malignant diseases. In this study, we firstly cloned porcine B4GALT (pB4GALT5) from porcine alveolar macrophages, and predicted the structural domain and function of seven porcine β-1, 4 galactosyltransferase (I–VII) based on transcriptome analysis of PRRSV infected cells. Additionally, the upregulated porcine B4GALT5 expression was detected from PRRSV infected porcine alveolar macrophage (PAM) cells. The PRRSV proliferation were slightly inhibited in overexpression of pB4GALT5 transfected cells, the interaction of B4GALT5 and GP5 of PRRSV was firstly be detected by Co-IP, and the co-location between B4GALT5 and GP5 were also observed in golgi membranes by confocal microscopy. A significant increasing mRNA transcription, including inflammatory cytokines (IFN-α, IL-6, IL-18, IL-1β, TNF-α) and some cell surface glycosylated protein involved in antigen present (MHC-I/II), cell adhesion and migration (chemokine MCP-1 and receptor CCR2; LFA-1, ICAM-1) were upregulated in B4GALT5 overexpressed PRRSV infected cells. Our results demonstrated that the regulation of pB4GALT5 plays an important roles in PRRSV proliferation and modification function in viral infection cells. And these results will make achievements by supporting the research of latent mechanisms of β-1, 4 galactosyltransferase V in antiviral immunity.
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Affiliation(s)
- Lei Zhang
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Jie Ren
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Peidian Shi
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Dong Lu
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Chengxue Zhao
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Yanxin Su
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Lilin Zhang
- School of Life Sciences, Tianjin University, Tianjin, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, Tianjin, China
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49
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Kalser J, Adler B, Mach M, Kropff B, Puchhammer-Stöckl E, Görzer I. Differences in Growth Properties among Two Human Cytomegalovirus Glycoprotein O Genotypes. Front Microbiol 2017; 8:1609. [PMID: 28878758 PMCID: PMC5572245 DOI: 10.3389/fmicb.2017.01609] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/07/2017] [Indexed: 11/22/2022] Open
Abstract
Glycoprotein O (gO) of the human cytomegalovirus (HCMV) is the critical subunit of the envelope trimer gH/gL/gO as it interacts with platelet-derived growth factor alpha receptor upon fibroblast entry, and triggers gB-mediated fusion for fibroblast and epithelial cell infection. Eight genotypes (GT) of the highly polymorphic gO gene are described, yet it is unclear whether the distinct GTs differ in their function. Thus, we aimed to elucidate potential functional differences between two highly diverse gO GTs in an otherwise genomically identical HCMV strain. Therefore, resident gO GT1c sequence of strain TB40-BAC4-luc was entirely replaced by gO GT4 of strain Towne and both, GT1c and GT4 viruses, were investigated for their growth properties in fibroblasts and epithelial cells. In addition, two conserved gO cysteines involved in gH/gL/gO stabilization were mutated to serine either in GT1c (C218S and C343S) or GT4 (C216S and C336S) and their effects on cell-free infectivity were assessed. GT4 viruses displayed a significantly enhanced epithelial cell tropism and this resulted in higher virus release upon replication in epithelial cells when compared to GT1c viruses. Further, when the two cysteines were individually mutated in gO GT1c no impairment in cell-free infectivity was observed. This, however, was in sharp contrast to gO GT4, in which both of the corresponding cysteine mutations led to a substantial reduction in cell-free infectivity which was even more pronounced upon mutation of GT4-C336 than of GT4-C216. In conclusion, these findings provide evidence that the two highly diverse gO genotypes, GT1c and GT4, differ in their functional properties as revealed by their different infection capacities for epithelial cells and by their different responsiveness to mutation of strictly conserved cysteine residues. Thus, it is likely that the gO heterogeneity influences cell-free infectivity of HCMV also in vivo which may have important implications for virus host transmission.
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Affiliation(s)
- Julia Kalser
- Center for Virology, Medical University of ViennaVienna, Austria
| | - Barbara Adler
- Max von Pettenkofer-Institute for Virology, Ludwig-Maximilians-University MunichMunich, Germany
| | - Michael Mach
- Institute of Clinical and Molecular Virology, Friedrich-Alexander University Erlangen-NürnbergErlangen, Germany
| | - Barbara Kropff
- Institute of Clinical and Molecular Virology, Friedrich-Alexander University Erlangen-NürnbergErlangen, Germany
| | | | - Irene Görzer
- Center for Virology, Medical University of ViennaVienna, Austria
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50
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Risinger C, Sørensen KK, Jensen KJ, Olofsson S, Bergström T, Blixt O. Linear Multiepitope (Glyco)peptides for Type-Specific Serology of Herpes Simplex Virus (HSV) Infections. ACS Infect Dis 2017; 3:360-367. [PMID: 28238255 DOI: 10.1021/acsinfecdis.7b00001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Detection of type-specific antibodies is an important and essential part of accurate diagnosis, even in silent carriers of herpes simplex virus (HSV)-1 (oral) and HSV-2 (genital) infections. Serologic assays that identify HSV-1 and HSV-2 type-specific antibodies have been commercially available for more than a decade but often face problems related to cross-reactivity and similar issues. Attempts to identify type-specific peptide epitopes for use in serology for both HSV-1 and HSV-2 have been limited. We recently demonstrated epitope mapping of envelope glycoprotein G2 and identified a type-specific glycopeptide epitope that broadly recognized HSV-2 infected individuals. In the present work we have performed a comprehensive glycopeptide synthesis and microarray epitope mapping of 14 envelope proteins from HSV-1 and HSV-2, namely, gB, gC, gD, gE, gG, gH, and gI, using sera from HSV-1- and HSV-2-infected individuals and control sera. Several unique type-specific peptide epitopes with high sensitivity were identified and synthesized as one large linear multiepitope sequence using microwave-assisted solid-phase (glyco)peptide synthesis. Microarray validation with clinically defined HSV and Varicella Zoster (VZV) sera confirmed excellent cumulative specificities and sensitivities.
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Affiliation(s)
- Christian Risinger
- Department of Chemistry,
Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Kasper K. Sørensen
- Department of Chemistry,
Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Knud J. Jensen
- Department of Chemistry,
Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Sigvard Olofsson
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Tomas Bergström
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, 41345 Gothenburg, Sweden
| | - Ola Blixt
- Department of Chemistry,
Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
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