1
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Sun Y, Xu X, Wu T, Fukuda T, Isaji T, Morii S, Nakano M, Gu J. Core fucosylation within the Fc-FcγR degradation pathway promotes enhanced IgG levels via exogenous L-fucose. J Biol Chem 2024:107558. [PMID: 39002669 DOI: 10.1016/j.jbc.2024.107558] [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: 06/20/2024] [Revised: 06/30/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024] Open
Abstract
α1,6-Fucosyltransferase (Fut8) is the enzyme responsible for catalyzing core fucosylation. Exogenous L-fucose upregulates fucosylation levels through the GDP-fucose salvage pathway. This study investigated the relationship between core fucosylation and IgG amounts in serum utilizing wild-type (Fut8+/+), Fut8 heterozygous knockout (Fut8+/-), and Fut8 knockout (Fut8-/-) mice. The IgG levels in serum were lower in Fut8+/- and Fut8-/- mice compared with Fut8+/+ mice. Exogenous L-fucose increased IgG levels in Fut8+/- mice, while the ratios of core fucosylated IgG versus total IgG showed no significant difference among Fut8+/+, Fut8+/-, and Fut8+/- mice treated with L-fucose. These ratios were determined by Western blot, lectin blot, and mass spectrometry analysis. Real-time PCR results demonstrated that mRNA levels of IgG Fc and neonatal Fc receptor, responsible for protecting IgG turnover, were similar among Fut8+/+, Fut8+/-, and Fut8+/- mice treated with L-fucose. In contrast, the expression levels of Fc-gamma receptor Ⅳ (FcγRⅣ), mainly expressed on macrophages and neutrophils, were increased in Fut8+/- mice compared to Fut8+/+ mice. The effect was reversed by administrating L-fucose, suggesting that core fucosylation primarily regulates the IgG levels through the Fc-FcγRⅣ degradation pathway. Consistently, IgG internalization and transcytosis were suppressed in FcγRⅣ-knockout cells while enhanced in Fut8-knockout cells. Furthermore, we assessed the expression levels of specific antibodies against ovalbumin and found they were downregulated in Fut8+/- mice, with potential recovery observed with L-fucose administration. These findings confirm that core fucosylation plays a vital role in regulating IgG levels in serum, which may provide insights into a novel mechanism in adaptive immune regulation.
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Affiliation(s)
- Yuhan Sun
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Xing Xu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Tiangui Wu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Tomohiko Fukuda
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Tomoya Isaji
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Sayaka Morii
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
| | - Miyako Nakano
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
| | - Jianguo Gu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan.
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2
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Wang QR, Yu X, Li Y, Zhu MZ. Correlations among serum alpha-(1,6)-fucosyltransferase and early symptoms associated with Parkinson's disease: A cross-sectional retrospective study. Brain Res Bull 2024; 212:110959. [PMID: 38643887 DOI: 10.1016/j.brainresbull.2024.110959] [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: 01/22/2024] [Revised: 04/03/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Alpha-(1,6)-fucosyltransferase (FUT8) has been found to play a role in modulating the central immune system and inflammatory responses. Limited studies have assessed the correlations between serum FUT8 levels and various non-motor symptoms associated with early Parkinson's disease (PD). Therefore, our research aims to investigate the associations between serum FUT8 levels and symptoms such as smell dysfunction, sleep duration, sleep problems, and MMSE scores in PD patients. FUT8 and neurofilament light chain (NfL) levels were measured using enzyme-linked immunosorbent assays (ELISA). We analyzed the correlations between serum FUT8 levels, NfL, and early symptoms of PD using Spearman's correlation, multiple linear regression, and logistic regression models. The expression of FUT8 in CSF samples from PD patients was significantly upregulated, with its protein levels in CSF being positively associated with serum levels. Furthermore, there were significant positive associations between serum FUT8 levels with NfL levels, smell dysfunction, short sleep duration, and long sleep duration. However, a significant inverse relationship was observed between FUT8 levels and MMSE scores. Additionally, we explored gender and age differences in the correlations of FUT8 levels and early symptoms in patients. This study reveals that increased FUT8 levels are positively correlated with a higher risk of early PD-associated symptoms. These findings suggest that serum FUT8 could serve as a promising biomarker for the early detection of PD.
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Affiliation(s)
- Qi-Rong Wang
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei 441021, China
| | - Xue Yu
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei 441021, China
| | - Yang Li
- Department of Neurology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei 441000, China.
| | - Ming-Zhen Zhu
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei 441021, China.
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3
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Li Y, Ning X, Zhao Z, He X, Xue Q, Zhou M, Li W, Li M. Core fucosylation of maternal milk N-glycans imparts early-life immune tolerance through gut microbiota-dependent regulation in RORγt + Treg cells. Food Funct 2024; 15:4140-4153. [PMID: 38445991 DOI: 10.1039/d4fo00230j] [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: 03/07/2024]
Abstract
Milk glycans play key roles in shaping and maintaining a healthy infant gut microbiota. Core fucosylation catalyzed by fucosyltransferase (Fut8) is the major glycosylation pattern on human milk N-glycan, which was crucial for promoting the colonization and dominant growth of Bifidobacterium and Lactobacillus spp. in neonates. However, the influence of core-fucose in breast milk on the establishment of early-life immune tolerance remains poorly characterized. In this study, we found that the deficiency of core-fucose in the milk of maternal mice caused by Fut8 gene heterozygosity (Fut8+/-) resulted in poor immune tolerance towards the ovalbumin (OVA) challenge, accompanied by a reduced proportion of intestinal RORγt+ Treg cells and the abundance of Lactobacillus spp., especially L. reuteri and L. johnsonii, in their breast-fed neonates. The administration of the L. reuteri and L. johnsonii mixture to neonatal mice compromised the OVA-induced allergy and up-regulated the intestinal RORγt+ Treg cell proportions. However, Lactobacillus mixture supplementation did not alleviate allergic responses in RORγt+ Treg cell-deficient mice caused by Rorc gene heterozygosity (Rorc+/-) post OVA challenge, indicating that the intervention effects depend on the RORγt+ Treg cells. Interestingly, instead of L. reuteri and L. johnsonii, we found that the relative abundance of another Lactobacillus spp., L. murinus, in the gut of the offspring mice was significantly promoted by intervention, which showed enhancing effects on the proliferation of splenic and intestinal RORγt+ Treg cells in in vitro studies. The above results indicate that core fucosylation of breast milk N-glycans is beneficial for the establishment of RORγt+ Treg cell mediated early-life immune tolerance through the manipulation of symbiotic bacteria in mice.
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Affiliation(s)
- Yuyuan Li
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China.
| | - Xixi Ning
- College of Basic Medical Science, Dalian Medical University, Dalian, China.
| | - Zihui Zhao
- Pelvic Floor Repair Center, Dalian Women and Children's Medical Group, Dalian, China
| | - Xi He
- College of Basic Medical Science, Dalian Medical University, Dalian, China.
| | - Qidi Xue
- College of Basic Medical Science, Dalian Medical University, Dalian, China.
| | - Manlin Zhou
- College of Basic Medical Science, Dalian Medical University, Dalian, China.
| | - Wenzhe Li
- Shantou University Medical College, Shantou, Guangdong, China.
| | - Ming Li
- College of Basic Medical Science, Dalian Medical University, Dalian, China.
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4
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Pan Q, Xie Y, Zhang Y, Guo X, Wang J, Liu M, Zhang XL. EGFR core fucosylation, induced by hepatitis C virus, promotes TRIM40-mediated-RIG-I ubiquitination and suppresses interferon-I antiviral defenses. Nat Commun 2024; 15:652. [PMID: 38253527 PMCID: PMC10803816 DOI: 10.1038/s41467-024-44960-6] [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: 06/14/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Aberrant N-glycosylation has been implicated in viral diseases. Alpha-(1,6)-fucosyltransferase (FUT8) is the sole enzyme responsible for core fucosylation of N-glycans during glycoprotein biosynthesis. Here we find that multiple viral envelope proteins, including Hepatitis C Virus (HCV)-E2, Vesicular stomatitis virus (VSV)-G, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-Spike and human immunodeficiency virus (HIV)-gp120, enhance FUT8 expression and core fucosylation. HCV-E2 manipulates host transcription factor SNAIL to induce FUT8 expression through EGFR-AKT-SNAIL activation. The aberrant increased-FUT8 expression promotes TRIM40-mediated RIG-I K48-ubiquitination and suppresses the antiviral interferon (IFN)-I response through core fucosylated-EGFR-JAK1-STAT3-RIG-I signaling. FUT8 inhibitor 2FF, N-glycosylation site-specific mutation (Q352AT) of EGFR, and tissue-targeted Fut8 silencing significantly increase antiviral IFN-I responses and suppress RNA viral replication, suggesting that core fucosylation mediated by FUT8 is critical for antiviral innate immunity. These findings reveal an immune evasion mechanism in which virus-induced FUT8 suppresses endogenous RIG-I-mediated antiviral defenses by enhancing core fucosylated EGFR-mediated activation.
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Grants
- This work was supported by grants from the National Natural Science Foundation of China (82230078, 22077097, 91740120, 82272978, 21572173 and 21721005), National Outstanding Youth Foundation of China (81025008), National Key R&D Program of China (2022YFA1303500, 2018YFA0507603), Medical Science Advancement Program (Basical Medical Sciences) of Wuhan University (TFJC 2018002.), Key R&D Program of Hubei Province (2020BCB020), the Hubei Province’s Outstanding Medical Academic Leader Program (523-276003), the Innovative Group Project of Hubei Health Committee (WJ2021C002), the Foundational Research Funds for the Central University of China (2042022dx0003, 2042023kf1011) and Natural Science Foundation Project of Hubei Province (2021CFB484), Natural Science Foundation Project of Hubei Province (2021CFB484 to M.L).
- This work was supported by grants from the Natural Science Foundation of Hubei Province (2021CFB484), National Natural Science Foundation of China 82272978
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Affiliation(s)
- Qiu Pan
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Yan Xie
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Ying Zhang
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Xinqi Guo
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Jing Wang
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China
| | - Min Liu
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China.
| | - Xiao-Lian Zhang
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, and Department of Immunology, Wuhan University TaiKang Medical School (School of Basic Medical Sciences), Wuhan, 430071, China.
- Department of Allergy, Zhongnan Hospital of Wuhan University, Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, 430071, China.
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5
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Shi M, Nan XR, Liu BQ. The Multifaceted Role of FUT8 in Tumorigenesis: From Pathways to Potential Clinical Applications. Int J Mol Sci 2024; 25:1068. [PMID: 38256141 PMCID: PMC10815953 DOI: 10.3390/ijms25021068] [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: 12/18/2023] [Revised: 01/07/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024] Open
Abstract
FUT8, the sole glycosyltransferase responsible for N-glycan core fucosylation, plays a crucial role in tumorigenesis and development. Aberrant FUT8 expression disrupts the function of critical cellular components and triggers the abnormality of tumor signaling pathways, leading to malignant transformations such as proliferation, invasion, metastasis, and immunosuppression. The association between FUT8 and unfavorable outcomes in various tumors underscores its potential as a valuable diagnostic marker. Given the remarkable variation in biological functions and regulatory mechanisms of FUT8 across different tumor types, gaining a comprehensive understanding of its complexity is imperative. Here, we review how FUT8 plays roles in tumorigenesis and development, and how this outcome could be utilized to develop potential clinical therapies for tumors.
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Affiliation(s)
| | | | - Bao-Qin Liu
- Department of Biochemistry & Molecular Biology, School of Life Sciences, China Medical University, Shenyang 110122, China; (M.S.); (X.-R.N.)
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6
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Corcoran E, Olayinka A, di Luca M, Gusti Y, Hakimjavadi R, O'Connor B, Redmond EM, Cahill PA. N-Glycans on the extracellular domain of the Notch1 receptor control Jagged-1 induced Notch signalling and myogenic differentiation of S100β resident vascular stem cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.17.567576. [PMID: 38014317 PMCID: PMC10680845 DOI: 10.1101/2023.11.17.567576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Notch signalling, critical for development and postnatal homeostasis of the vascular system, is highly regulated by several mechanisms including glycosylation. While the importance of O-linked glycosylation is widely accepted, the structure and function of N-glycans has yet to be defined. Here, we take advantage of lectin binding assays in combination with pharmacological, molecular, and site-directed mutagenetic approaches to study N-glycosylation of the Notch1 receptor. We find that several key oligosaccharides containing bisecting or core fucosylated structures decorate the receptor, control expression and receptor trafficking, and dictate Jagged-1 activation of Notch target genes and myogenic differentiation of multipotent S100β vascular stem cells. N-glycans at asparagine (N) 1241 and 1587 protect the receptor from accelerated degradation, while the oligosaccharide at N888 directly affects signal transduction. Conversely, N-linked glycans at N959, N1179, N1489 do not impact canonical signalling but inhibit differentiation. Our work highlights a novel functional role for N-glycans in controlling Notch1 signalling and differentiation of vascular stem cells.
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Affiliation(s)
- Eoin Corcoran
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Abidemi Olayinka
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Mariana di Luca
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Yusof Gusti
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Roya Hakimjavadi
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Brendan O'Connor
- School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
| | - Eileen M Redmond
- Department of Surgery, University of Rochester, 601 Elmwood Ave, Rochester, NY 14642, United States
| | - Paul A Cahill
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology Faculty of Science and Health, Dublin City University, Dublin, Ireland
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7
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Abdelbary M, Nolz JC. N-linked glycans: an underappreciated key determinant of T cell development, activation, and function. IMMUNOMETABOLISM (COBHAM, SURREY) 2023; 5:e00035. [PMID: 38027254 PMCID: PMC10662610 DOI: 10.1097/in9.0000000000000035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023]
Abstract
N-linked glycosylation is a post-translational modification that results in the decoration of newly synthesized proteins with diverse types of oligosaccharides that originate from the amide group of the amino acid asparagine. The sequential and collective action of multiple glycosidases and glycosyltransferases are responsible for determining the overall size, composition, and location of N-linked glycans that become covalently linked to an asparagine during and after protein translation. A growing body of evidence supports the critical role of N-linked glycan synthesis in regulating many features of T cell biology, including thymocyte development and tolerance, as well as T cell activation and differentiation. Here, we provide an overview of how specific glycosidases and glycosyltransferases contribute to the generation of different types of N-linked glycans and how these post-translational modifications ultimately regulate multiple facets of T cell biology.
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Affiliation(s)
- Mahmoud Abdelbary
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, USA
| | - Jeffrey C. Nolz
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
- Department of Dermatology, Oregon Health & Science University, Portland, OR, USA
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8
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Zhang NZ, Zhao LF, Zhang Q, Fang H, Song WL, Li WZ, Ge YS, Gao P. Core fucosylation and its roles in gastrointestinal glycoimmunology. World J Gastrointest Oncol 2023; 15:1119-1134. [PMID: 37546555 PMCID: PMC10401475 DOI: 10.4251/wjgo.v15.i7.1119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/28/2023] [Accepted: 05/08/2023] [Indexed: 07/12/2023] Open
Abstract
Glycosylation is a common post-translational modification in eukaryotic cells. It is involved in the production of many biologically active glycoproteins and the regulation of protein structure and function. Core fucosylation plays a vital role in the immune response. Most immune system molecules are core fucosylated glycoproteins such as complements, cluster differentiation antigens, immunoglobulins, cytokines, major histocompatibility complex molecules, adhesion molecules, and immune molecule synthesis-related transcription factors. These core fucosylated glycoproteins play important roles in antigen recognition and clearance, cell adhesion, lymphocyte activation, apoptosis, signal transduction, and endocytosis. Core fucosylation is dominated by fucosyltransferase 8 (Fut8), which catalyzes the addition of α-1,6-fucose to the innermost GlcNAc residue of N-glycans. Fut8 is involved in humoral, cellular, and mucosal immunity. Tumor immunology is associated with aberrant core fucosylation. Here, we summarize the roles and potential modulatory mechanisms of Fut8 in various immune processes of the gastrointestinal system.
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Affiliation(s)
- Nian-Zhu Zhang
- Clinical Laboratory, The Second Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Li-Fen Zhao
- Clinical Laboratory, The Second Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Qian Zhang
- Department of Cell Therapy, Shanghai Tianze Yuntai Biomedical Co., Ltd., Shanghai 200100, China
| | - Hui Fang
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba 305-0005, Ibaraki, Japan
| | - Wan-Li Song
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Wen-Zhe Li
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Yu-Song Ge
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
| | - Peng Gao
- Clinical Laboratory, The Second Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China
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9
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Ouchida T, Maeda H, Akamatsu Y, Maeda M, Takamatsu S, Kondo J, Misaki R, Kamada Y, Ueda M, Ueda K, Miyoshi E. The specific core fucose-binding lectin Pholiota squarrosa lectin (PhoSL) inhibits hepatitis B virus infection in vitro. Sci Rep 2023; 13:6175. [PMID: 37061516 PMCID: PMC10105536 DOI: 10.1038/s41598-023-28572-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 01/20/2023] [Indexed: 04/17/2023] Open
Abstract
Glycosylation of proteins and lipids in viruses and their host cells is important for viral infection and is a target for antiviral therapy. Hepatitis B virus (HBV) is a major pathogen that causes acute and chronic hepatitis; it cannot be cured because of the persistence of its covalently closed circular DNA (cccDNA) in hepatocytes. Here we found that Pholiota squarrosa lectin (PhoSL), a lectin that specifically binds core fucose, bound to HBV particles and inhibited HBV infection of a modified human HepG2 cell line, HepG2-hNTCP-C4, that expresses an HBV receptor, sodium taurocholate cotransporting polypeptide. Knockout of fucosyltransferase 8, the enzyme responsible for core fucosylation and that aids receptor endocytosis, in HepG2-hNTCP-C4 cells reduced HBV infectivity, and PhoSL facilitated that reduction. PhoSL also blocked the activity of epidermal growth factor receptor, which usually enhances HBV infection. HBV particles bound to fluorescently labeled PhoSL internalized into HepG2-hNTCP-C4 cells, suggesting that PhoSL might inhibit HBV infection after internalization. As PhoSL reduced the formation of HBV cccDNA, a marker of chronic HBV infection, we suggest that PhoSL could impair processes from internalization to cccDNA formation. Our finding could lead to the development of new anti-HBV agents.
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Affiliation(s)
- Tsunenori Ouchida
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
- Laboratory of Single Molecule Biology, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Haruka Maeda
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Yuka Akamatsu
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Megumi Maeda
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Shinji Takamatsu
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Jumpei Kondo
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Ryo Misaki
- Applied Microbiology Laboratory, International Center for Biotechnology, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Kamada
- Department of Advanced Metabolic Hepatology, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Masahiro Ueda
- Laboratory of Single Molecule Biology, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Keiji Ueda
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7 Yamada-Oka, Suita, Osaka, 565-0871, Japan.
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10
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Ihara H, Ikeda Y. The Roles of the N-terminal α-helical and C-terminal Src Homology 3 Domains in the Enzymatic Functions of FUT8. TRENDS GLYCOSCI GLYC 2021. [DOI: 10.4052/tigg.2025.1e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hideyuki Ihara
- Division of Molecular Cell Biology, Department of Biomolecular Sciences, Saga University Faculty of Medicine
| | - Yoshitaka Ikeda
- Division of Molecular Cell Biology, Department of Biomolecular Sciences, Saga University Faculty of Medicine
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11
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Ihara H, Ikeda Y. The Roles of the N-terminal α-helical and C-terminal Src Homology 3 Domains in the Enzymatic Functions of FUT8. TRENDS GLYCOSCI GLYC 2021. [DOI: 10.4052/tigg.2025.1j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hideyuki Ihara
- Division of Molecular Cell Biology, Department of Biomolecular Sciences, Saga University Faculty of Medicine
| | - Yoshitaka Ikeda
- Division of Molecular Cell Biology, Department of Biomolecular Sciences, Saga University Faculty of Medicine
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12
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Zhang R, Yang Q, Boruah BM, Zong G, Li C, Chapla D, Yang JY, Moremen KW, Wang LX. Appropriate aglycone modification significantly expands the glycan substrate acceptability of α1,6-fucosyltransferase (FUT8). Biochem J 2021; 478:1571-1583. [PMID: 33734311 PMCID: PMC8062310 DOI: 10.1042/bcj20210138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 12/16/2022]
Abstract
The α1,6-fucosyltransferase, FUT8, is the sole enzyme catalyzing the core-fucosylation of N-glycoproteins in mammalian systems. Previous studies using free N-glycans as acceptor substrates indicated that a terminal β1,2-GlcNAc moiety on the Man-α1,3-Man arm of N-glycan substrates is required for efficient FUT8-catalyzed core-fucosylation. In contrast, we recently demonstrated that, in a proper protein context, FUT8 could also fucosylate Man5GlcNAc2 without a GlcNAc at the non-reducing end. We describe here a further study of the substrate specificity of FUT8 using a range of N-glycans containing different aglycones. We found that FUT8 could fucosylate most of high-mannose and complex-type N-glycans, including highly branched N-glycans from chicken ovalbumin, when the aglycone moiety is modified with a 9-fluorenylmethyloxycarbonyl (Fmoc) moiety or in a suitable peptide/protein context, even if they lack the terminal GlcNAc moiety on the Man-α1,3-Man arm. FUT8 could also fucosylate paucimannose structures when they are on glycoprotein substrates. Such core-fucosylated paucimannosylation is a prominent feature of lysosomal proteins of human neutrophils and several types of cancers. We also found that sialylation of N-glycans significantly reduced their activity as a substrate of FUT8. Kinetic analysis demonstrated that Fmoc aglycone modification could either improve the turnover rate or decrease the KM value depending on the nature of the substrates, thus significantly enhancing the overall efficiency of FUT8 catalyzed fucosylation. Our results indicate that an appropriate aglycone context of N-glycans could significantly broaden the acceptor substrate specificity of FUT8 beyond what has previously been thought.
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Affiliation(s)
- Roushu Zhang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Qiang Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Bhargavi M Boruah
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602
| | - Guanghui Zong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Chao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
| | - Digantkumar Chapla
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602
| | - Kelley W Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742
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13
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Liu D, Liu G, Li Y, Wang Y, Zheng Y, Sha S, Li W, Kameyama A, Dong W. Rapid glycosylation analysis of mouse serum glycoproteins separated by supported molecular matrix electrophoresis. J Proteomics 2021; 234:104098. [PMID: 33421637 DOI: 10.1016/j.jprot.2020.104098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 12/06/2020] [Accepted: 12/29/2020] [Indexed: 11/30/2022]
Abstract
Previously, we developed a novel separation technique, namely, supported molecular matrix electrophoresis (SMME), which separates mucins on a PVDF membrane that impregnated with a hydrophilic polymer (such as polyvinyl alcohol), so it has the characteristics that are compatible with glycan analysis of the separated bands. Here, we describe the first instance of the application of SMME to mouse sera fractionation and demonstrate their differences from the pooled human sera fractionation by SMME. Furthermore, we have developed a fixation method for the lectin blotting of SMME-separated glycoproteins by immersing the SMME membranes into acetone solvent followed by heating. It showed that the amount of protein samples required for SMME were reduced more than 4-fold than that of the process of SDS-PAGE. We applied these techniques for the detection of glycosylation patterns of serum proteins from Fut8+/+ and Fut8-/- mice, further analyzed N-linked and O-linked glycans from the separated γ-bands by mass spectrometry, and demonstrated that there are α2,8-sialylated O-glycans contained in mouse sera glycoproteins. SMME can provide simple, rapid sera fractionation, glycan profiling differences between the bands of two samples and a new insight into the underlying mechanism that responsible for related diseases. SIGNIFICANCE: We describe that the first application of SMME can separate mouse serum proteins into six bands and identify the major protein components of each fraction in mouse serum separated by SMME. Furthermore, we successfully developed a fixation method for lectin blotting of SMME-separated glycoproteins and applied to the detection of glycosylation patterns of serum glycoproteins from Fut8+/+ and Fut8-/- mice, also, the method is promising for detecting glycan profiling differences between two samples in both research and clinical settings.
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Affiliation(s)
- Dongqi Liu
- China Medical University - The Queen's University of Belfast Joint College, Shenyang 110122, Liaoning, China
| | - Gang Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Yuqing Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Yue Wang
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Yuanyuan Zheng
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Shanshan Sha
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Wenzhe Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China
| | - Akihiko Kameyama
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Open Space Laboratory C-2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Weijie Dong
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning, China.
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14
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Abstract
N-glycosylation is a highly conserved glycan modification, and more than 7000 proteins are N-glycosylated in humans. N-glycosylation has many biological functions such as protein folding, trafficking, and signal transduction. Thus, glycan modification to proteins is profoundly involved in numerous physiological and pathological processes. The N-glycan precursor is biosynthesized in the endoplasmic reticulum (ER) from dolichol phosphate by sequential enzymatic reactions to generate the dolichol-linked oligosaccharide composed of 14 sugar residues, Glc3Man9GlcNAc2. The oligosaccharide is then en bloc transferred to the consensus sequence N-X-S/T (X represents any amino acid except proline) of nascent proteins. Subsequently, the N-glycosylated nascent proteins enter the folding step, in which N-glycans contribute largely to attaining the correct protein fold by recruiting the lectin-like chaperones, calnexin, and calreticulin. Despite the N-glycan-dependent folding process, some glycoproteins do not fold correctly, and these misfolded glycoproteins are destined to degradation by proteasomes in the cytosol. Properly folded proteins are transported to the Golgi, and N-glycans undergo maturation by the sequential reactions of glycosidases and glycosyltransferases, generating complex-type N-glycans. N-Acetylglucosaminyltransferases (GnT-III, GnT-IV, and GnT-V) produce branched N-glycan structures, affording a higher complexity to N-glycans. In this chapter, we provide an overview of the biosynthetic pathway of N-glycans in the ER and Golgi.
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15
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Boruah BM, Kadirvelraj R, Liu L, Ramiah A, Li C, Zong G, Bosman GP, Yang JY, Wang LX, Boons GJ, Wood ZA, Moremen KW. Characterizing human α-1,6-fucosyltransferase (FUT8) substrate specificity and structural similarities with related fucosyltransferases. J Biol Chem 2020; 295:17027-17045. [PMID: 33004438 PMCID: PMC7863877 DOI: 10.1074/jbc.ra120.014625] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/28/2020] [Indexed: 12/18/2022] Open
Abstract
Mammalian Asn-linked glycans are extensively processed as they transit the secretory pathway to generate diverse glycans on cell surface and secreted glycoproteins. Additional modification of the glycan core by α-1,6-fucose addition to the innermost GlcNAc residue (core fucosylation) is catalyzed by an α-1,6-fucosyltransferase (FUT8). The importance of core fucosylation can be seen in the complex pathological phenotypes of FUT8 null mice, which display defects in cellular signaling, development, and subsequent neonatal lethality. Elevated core fucosylation has also been identified in several human cancers. However, the structural basis for FUT8 substrate specificity remains unknown.Here, using various crystal structures of FUT8 in complex with a donor substrate analog, and with four distinct glycan acceptors, we identify the molecular basis for FUT8 specificity and activity. The ordering of three active site loops corresponds to an increased occupancy for bound GDP, suggesting an induced-fit folding of the donor-binding subsite. Structures of the various acceptor complexes were compared with kinetic data on FUT8 active site mutants and with specificity data from a library of glycan acceptors to reveal how binding site complementarity and steric hindrance can tune substrate affinity. The FUT8 structure was also compared with other known fucosyltransferases to identify conserved and divergent structural features for donor and acceptor recognition and catalysis. These data provide insights into the evolution of modular templates for donor and acceptor recognition among GT-B fold glycosyltransferases in the synthesis of diverse glycan structures in biological systems.
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Affiliation(s)
- Bhargavi M Boruah
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Renuka Kadirvelraj
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - Lin Liu
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Annapoorani Ramiah
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Chao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Guanghui Zong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Gerlof P Bosman
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA; Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands
| | - Zachary A Wood
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.
| | - Kelley W Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.
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16
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Zhang N, Li M, Xu X, Zhang Y, Liu Y, Zhao M, Li P, Chen J, Fukuda T, Gu J, Jin X, Li W. Loss of core fucosylation enhances the anticancer activity of cytotoxic T lymphocytes by increasing PD-1 degradation. Eur J Immunol 2020; 50:1820-1833. [PMID: 32460355 DOI: 10.1002/eji.202048543] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/24/2020] [Accepted: 05/25/2020] [Indexed: 12/13/2022]
Abstract
As an immune checkpoint, programmed cell death 1 (PD-1) and its ligand (PD-L1) pathway plays a crucial role in CD8+ cytotoxic T lymphocytes (CTL) activation and provides antitumor responses. The N-glycans of PD-1 and PD-L1 are highly core fucosylated, which are solely catalyzed by the core fucosyltransferase (Fut8). However, the precise biological mechanisms underlying effects of core fucosylation of PD-1 and PD-L1 on CTL activation have not been fully understood. In this study, we found that core fucosylation was significantly upregulated in lung adenocarcinoma. Compared to those of Fut8+/+ OT-I mice, the lung adenocarcinoma formation induced by urethane was markedly reduced in Fut8-/- OT-I mice. De-core fucosylation of PD-1 compromised its expression on Fut8-/- CTL, resulted in enhanced Fut8-/- CTL activation and cytotoxicity, leading to more efficient tumor eradication. Indeed, loss of core fucosylation significantly enhanced the PD-1 ubiquitination and in turn led to the degradation of PD-1 in the proteasome. Our current work indicates that inhibition of core fucosylation is a unique strategy to reduce PD-1 expression for the antilung adenocarcinoma immune therapy in the future.
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Affiliation(s)
- Nianzhu Zhang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Ming Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Xing Xu
- Tianjin Medical University Cancer Institute and Hospital. National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin. Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Yingshu Zhang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Yancheng Liu
- Tianjin Medical University Cancer Institute and Hospital. National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin. Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Meng Zhao
- Tianjin Medical University Cancer Institute and Hospital. National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin. Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Peng Li
- Tianjin Medical University Cancer Institute and Hospital. National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin. Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Jun Chen
- Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Tomohiko Fukuda
- Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan
| | - Jianguo Gu
- Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan
| | - Xun Jin
- Tianjin Medical University Cancer Institute and Hospital. National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin. Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Wenzhe Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
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17
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Tomida S, Takata M, Hirata T, Nagae M, Nakano M, Kizuka Y. The SH3 domain in the fucosyltransferase FUT8 controls FUT8 activity and localization and is essential for core fucosylation. J Biol Chem 2020; 295:7992-8004. [PMID: 32350116 DOI: 10.1074/jbc.ra120.013079] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/27/2020] [Indexed: 12/15/2022] Open
Abstract
Core fucose is an N-glycan structure synthesized by α1,6-fucosyltransferase 8 (FUT8) localized to the Golgi apparatus and critically regulates the functions of various glycoproteins. However, how FUT8 activity is regulated in cells remains largely unclear. At the luminal side and uncommon for Golgi proteins, FUT8 has an Src homology 3 (SH3) domain, which is usually found in cytosolic signal transduction molecules and generally mediates protein-protein interactions in the cytosol. However, the SH3 domain has not been identified in other glycosyltransferases, suggesting that FUT8's functions are selectively regulated by this domain. In this study, using truncated FUT8 constructs, immunofluorescence staining, FACS analysis, cell-surface biotinylation, proteomics, and LC-electrospray ionization MS analyses, we reveal that the SH3 domain is essential for FUT8 activity both in cells and in vitro and identified His-535 in the SH3 domain as the critical residue for enzymatic activity of FUT8. Furthermore, we found that although FUT8 is mainly localized to the Golgi, it also partially localizes to the cell surface in an SH3-dependent manner, indicating that the SH3 domain is also involved in FUT8 trafficking. Finally, we identified ribophorin I (RPN1), a subunit of the oligosaccharyltransferase complex, as an SH3-dependent binding protein of FUT8. RPN1 knockdown decreased both FUT8 activity and core fucose levels, indicating that RPN1 stimulates FUT8 activity. Our findings indicate that the SH3 domain critically controls FUT8 catalytic activity and localization and is required for binding by RPN1, which promotes FUT8 activity and core fucosylation.
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Affiliation(s)
- Seita Tomida
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan.,Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Misaki Takata
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashihiroshima, Japan
| | - Tetsuya Hirata
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan
| | - Masamichi Nagae
- Department of Molecular Immunology, Research Institute for Microbial Disease, Osaka University, Suita, Japan.,Laboratory of Molecular Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Suita, Japan
| | - Miyako Nakano
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashihiroshima, Japan
| | - Yasuhiko Kizuka
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan .,Institute for Glyco-core Research (iGCORE), Tokai National Higher Education and Research System, Gifu, Japan
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18
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Loss of core fucosylation in both ST6GAL1 and its substrate enhances glycoprotein sialylation in mice. Biochem J 2020; 477:1179-1201. [DOI: 10.1042/bcj20190789] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/26/2020] [Accepted: 03/06/2020] [Indexed: 01/16/2023]
Abstract
Fucosyltransferase 8 (FUT8) and β-galactoside α-2,6-sialyltransferase 1 (ST6GAL1) are glycosyltransferases that catalyze α1,6-fucosylation and α2,6-sialylation, respectively, in the mammalian N-glycosylation pathway. They are aberrantly expressed in various human diseases. FUT8 is non-glycosylated but is responsible for the fucosylation of ST6GAL1. However, the mechanism for the interaction between these two enzymes is unknown. In this study, we show that serum levels of α2,6-sialylated N-glycans are increased in Fut8−/− mice, whereas the mRNA and protein levels of ST6GAL1 are unchanged in mouse live tissues. The level of α2,6-sialylation on IgG was also enhanced in Fut8−/− mice along with ST6GAL1 catalytic activity increase in both serum and liver. Moreover, it was observed that ST6GAL1 prefers non-fucosylated substrates. Interestingly, increased core fucosylation accompanied by a reduction in α2,6-sialylation, was detected in rheumatoid arthritis patient serum. These findings provide new insight into the interactions between FUT8 and ST6GAL1.
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19
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Involvement of the α-helical and Src homology 3 domains in the molecular assembly and enzymatic activity of human α1,6-fucosyltransferase, FUT8. Biochim Biophys Acta Gen Subj 2020; 1864:129596. [PMID: 32147455 DOI: 10.1016/j.bbagen.2020.129596] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/20/2020] [Accepted: 03/03/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND Previous structural analyses showed that human α1,6-fucosyltransferase, FUT8 contains a catalytic domain along with two additional domains, N-terminal α-helical domain and C-terminal Src homology 3 domain, but these domains are unique to FUT8 among glycosyltransferases. The role that these domains play in formation of the active form of FUT8 has not been investigated. This study reports on attempts to determine the involvement of these domains in the functions of FUT8. METHODS Based on molecular modeling, the domain mutants were constructed by truncation and site-directed mutagenesis, and were heterologously expressed in Sf21 or COS-1 cells. The mutants were analyzed by SDS-PAGE and assayed for enzymatic activity. In vivo cross-linking experiments by introducing disulfide bonds were also carried out to examine the orientation of the domains in the molecular assembly. RESULTS Mutagenesis and molecular modeling findings suggest that human FUT8 potentially forms homodimer in vivo via intermolecular hydrophobic interactions involving α-helical domains. Truncation or site-directed mutagenesis findings indicated that α-helical and SH3 domains are all required for enzymatic activity. In addition, in vivo cross-linking experiments clearly indicated that the SH3 domain located in close proximity to the α-helical domain in an intermolecular manner. CONCLUSIONS α-Helical and SH3 domains are required for a fully active enzyme, and are also involved in homophilic dimerization, which probably results in the formation of the active form of human FUT8. GENERAL SIGNIFICANCE α-Helical and SH3 domains, which are not commonly found in glycosyltransferases, play roles in the formation of the functional quaternary structure of human FUT8.
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20
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Zahid D, Zhang N, Fang H, Gu J, Li M, Li W. Loss of core fucosylation suppressed the humoral immune response in Salmonella typhimurium infected mice. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2020; 54:606-615. [PMID: 32146162 DOI: 10.1016/j.jmii.2020.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/12/2019] [Accepted: 02/10/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND The humoral immune response is pivotal to protect the host from Salmonella typhimurium (S. typhimurium) infection. Previously, we found that core fucosylation catalyzed by core fucosyltransferase (Fut8) could regulate the immune responses. However, the role of core fucosylation during S. typhimurium infection remains unclear. METHODS To demonstrate the role of Fut8 in S. typhimurium infection, we infected Fut8+/+ and Fut8-/- mice using S. typhimurium. The production of antiserum against the S. typhimurium was detected. The expression of T and B cell activation-related genes during S. typhimurium infection was analyzed. The role of core fucosylation on CD4+ T-B cell interaction and B cell generation was investigated during S. typhimurium infection. The production of sIgA was compared between Fut8+/+ and Fut8-/- mice. RESULTS Compared to Fut8+/+ mice, the number of S. typhimurium colonized in the cecum was markedly increased in Fut8-/- mice. The production of the IgG and sIgA specific for S. typhimurium was significantly decreased in Fut8-/- mice. Moreover, loss of Fut8 decreased the induction of Th2-type cytokines from splenic cells of Fut8-/- mice during S. typhimurium infection. In addition, we found that the core fucosylation regulated the interaction between B and T cells in the lipid raft formation. CONCLUSION Core fucosylation plays important roles in host defence against S. typhimurium infection.
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Affiliation(s)
- Danish Zahid
- College of Basic Medical Science, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Nianzhu Zhang
- College of Basic Medical Science, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Hui Fang
- College of Basic Medical Science, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China
| | - Jianguo Gu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Miyagi, Japan
| | - Ming Li
- College of Basic Medical Science, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China.
| | - Wenzhe Li
- College of Basic Medical Science, Dalian Medical University, 9-Western Section, Lvshun South Road, Dalian, Liaoning, 116044, China.
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21
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Duan C, Fukuda T, Isaji T, Qi F, Yang J, Wang Y, Takahashi S, Gu J. Deficiency of core fucosylation activates cellular signaling dependent on FLT3 expression in a Ba/F3 cell system. FASEB J 2020; 34:3239-3252. [DOI: 10.1096/fj.201902313rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/16/2019] [Accepted: 12/23/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Chengwei Duan
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Tomohiko Fukuda
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Tomoya Isaji
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Feng Qi
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Jie Yang
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Yuqin Wang
- Department of Pharmacology Pharmacy College Nantong University Nantong China
| | - Shinichiro Takahashi
- Division of Laboratory Medicine Faculty of Medicine Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Jianguo Gu
- Division of Regulatory Glycobiology Institute of Molecular Biomembrane and Glycobiology Tohoku Medical and Pharmaceutical University Sendai Japan
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22
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Manabe Y, Marchetti R, Takakura Y, Nagasaki M, Nihei W, Takebe T, Tanaka K, Kabayama K, Chiodo F, Hanashima S, Kamada Y, Miyoshi E, Dulal HP, Yamaguchi Y, Adachi Y, Ohno N, Tanaka H, Silipo A, Fukase K, Molinaro A. The Core Fucose on an IgG Antibody is an Endogenous Ligand of Dectin‐1. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yoshiyuki Manabe
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and EducationProject Research Center for Fundamental SciencesGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Roberta Marchetti
- Department of Chemical SciencesUniversity of Naples Federico II Via Cinthia 4 80126 Napoli Italy
| | - Yohei Takakura
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Masahiro Nagasaki
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Wataru Nihei
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Tomoyuki Takebe
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Katsunori Tanaka
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Biofunctional Synthetic Chemistry LaboratoryRIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Kazuya Kabayama
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and EducationProject Research Center for Fundamental SciencesGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Fabrizio Chiodo
- Amsterdam UMCVrije Universiteit AmsterdamDept. of Molecular Cell Biology and ImmunologyAmsterdam Infection and Immunity Institute Amsterdam The Netherlands
| | - Shinya Hanashima
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Yoshihiro Kamada
- Department of Molecular Biochemistry & Clinical InvestigationGraduate School of MedicineOsaka University 1–7 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry & Clinical InvestigationGraduate School of MedicineOsaka University 1–7 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Hari Prasad Dulal
- Structural Glycobiology TeamSystems Glycobiology Research GroupRIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Yoshiki Yamaguchi
- Laboratory of Pharmaceutical Physical ChemistryTohoku Medical and Pharmaceutical University 4-4-1 Komatsushima Aoba-ku, Sendai Miyagi 981-8558 Japan
| | - Yoshiyuki Adachi
- Laboratory for Immunopharmacology of Microbial ProductsSchool of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial ProductsSchool of PharmacyTokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi, Hachioji Tokyo 192-0392 Japan
| | - Hiroshi Tanaka
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1-H-101, Ookayama, Meguro Tokyo 152-8552 Japan
| | - Alba Silipo
- Department of Chemical SciencesUniversity of Naples Federico II Via Cinthia 4 80126 Napoli Italy
| | - Koichi Fukase
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and EducationProject Research Center for Fundamental SciencesGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Antonio Molinaro
- Department of ChemistryGraduate School of ScienceOsaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Department of Chemical SciencesUniversity of Naples Federico II Via Cinthia 4 80126 Napoli Italy
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23
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Manabe Y, Marchetti R, Takakura Y, Nagasaki M, Nihei W, Takebe T, Tanaka K, Kabayama K, Chiodo F, Hanashima S, Kamada Y, Miyoshi E, Dulal HP, Yamaguchi Y, Adachi Y, Ohno N, Tanaka H, Silipo A, Fukase K, Molinaro A. The Core Fucose on an IgG Antibody is an Endogenous Ligand of Dectin-1. Angew Chem Int Ed Engl 2019; 58:18697-18702. [PMID: 31625659 DOI: 10.1002/anie.201911875] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Indexed: 01/07/2023]
Abstract
The core fucose, a major modification of N-glycans, is implicated in immune regulation, such as the attenuation of the antibody-dependent cell-mediated cytotoxicity of antibody drugs and the inhibition of anti-tumor responses via the promotion of PD-1 expression on T cells. Although the core fucose regulates many biological processes, no core fucose recognition molecule has been identified in mammals. Herein, we report that Dectin-1, a known anti-β-glucan lectin, recognizes the core fucose on IgG antibodies. A combination of biophysical experiments further suggested that Dectin-1 recognizes aromatic amino acids adjacent to the N-terminal asparagine at the glycosylation site as well as the core fucose. Thus, Dectin-1 appears to be the first lectin-like molecule involved in the heterovalent and specific recognition of characteristic N-glycans on antibodies.
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Affiliation(s)
- Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Roberta Marchetti
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Napoli, Italy
| | - Yohei Takakura
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Masahiro Nagasaki
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Wataru Nihei
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Tomoyuki Takebe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Katsunori Tanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Kazuya Kabayama
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Fabrizio Chiodo
- Amsterdam UMC, Vrije Universiteit Amsterdam, Dept. of Molecular Cell Biology and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - Shinya Hanashima
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yoshihiro Kamada
- Department of Molecular Biochemistry & Clinical Investigation, Graduate School of Medicine, Osaka University, 1-7 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry & Clinical Investigation, Graduate School of Medicine, Osaka University, 1-7 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Hari Prasad Dulal
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Yoshiki Yamaguchi
- Laboratory of Pharmaceutical Physical Chemistry, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi, 981-8558, Japan
| | - Yoshiyuki Adachi
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Hiroshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-101, Ookayama, Meguro, Tokyo, 152-8552, Japan
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Napoli, Italy
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Antonio Molinaro
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Napoli, Italy
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24
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Wen X, Hu Y, Zhang X, Wei X, Wang T, Yin S. Integrated application of multi-omics provides insights into cold stress responses in pufferfish Takifugu fasciatus. BMC Genomics 2019; 20:563. [PMID: 31286856 PMCID: PMC6615287 DOI: 10.1186/s12864-019-5915-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 06/18/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND T. fasciatus (Takifugu fasciatus) faces the same problem as most warm water fish: the water temperature falls far below the optimal growth temperature in winter, causing a massive death of T. fasciatus and large economic losses. Understanding of the cold-tolerance mechanisms of this species is still limited. Integrated application of multi-omics research can provide a wealth of information to help us improve our understanding of low-temperature tolerance in fish. RESULTS To gain a comprehensive and unbiased molecular understanding of cold-tolerance in T. fasciatus, we characterized mRNA-seq and metabolomics of T. fasciatus livers using Illumina HiSeq 2500 and UHPLC-Q-TOF MS. We identified 2544 up-regulated and 2622 down-regulated genes in the liver of T. fasciatus. A total of 40 differential metabolites were identified, including 9 down-regulated and 31 up-regulated metabolites. In combination with previous studies on proteomics, we have established an mRNA-protein-metabolite interaction network. There are 17 DEMs (differentially-expressed metabolites) and 14 DEGs-DEPs (differentially co-expressed genes and proteins) in the interaction network that are mainly involved in fatty acids metabolism, membrane transport, signal transduction, and DNA damage and defense. We then validated a number of genes in the interaction network by qRT-PCR. Additionally, a number of SNPs (single nucleotide polymorphisms) were revealed through the transcriptome data. These results provide key information for further understanding of the molecular mechanisms of T. fasciatus under cold stress. CONCLUSION The data generated by integrated application of multi-omics can facilitate our understanding of the molecular mechanisms of fish response to low temperature stress. We have not only identified potential genes and SNPs involved in cold tolerance, but also show that some nutrient metabolites may be added to the diet to help the overwintering of T. fasciatus.
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Affiliation(s)
- Xin Wen
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
| | - Yadong Hu
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
| | - Xinyu Zhang
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
| | - Xiaozhen Wei
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
| | - Tao Wang
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
| | - Shaowu Yin
- College of Life Sciences, College of Marine Science and Engineering, Nanjing Normal University, Nanjing, 210023 China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005 Jiangsu China
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25
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Lu X, Zhang D, Shoji H, Duan C, Zhang G, Isaji T, Wang Y, Fukuda T, Gu J. Deficiency of α1,6-fucosyltransferase promotes neuroinflammation by increasing the sensitivity of glial cells to inflammatory mediators. Biochim Biophys Acta Gen Subj 2019; 1863:598-608. [DOI: 10.1016/j.bbagen.2018.12.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/05/2018] [Accepted: 12/13/2018] [Indexed: 10/27/2022]
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26
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Lv X, Song J, Xue K, Li Z, Li M, Zahid D, Cao H, Wang L, Song W, Ma T, Gu J, Li W. Core fucosylation of copper transporter 1 plays a crucial role in cisplatin-resistance of epithelial ovarian cancer by regulating drug uptake. Mol Carcinog 2019; 58:794-807. [PMID: 30614075 DOI: 10.1002/mc.22971] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/13/2018] [Accepted: 12/27/2018] [Indexed: 12/13/2022]
Abstract
Core fucosylation catalyzed by core fucosyltransferase (Fut8) contributes to the progressions of epithelial ovarian cancer (EOC). Copper transporter 1 (CTR1), which contains one N-glycan on Asn15 , mediates cellular transport of cisplatin (cDDP), and plays an important role in the process of cDDP-resistance in EOC. In the present study, we found that the core fucosylation level elevated significantly in the sera of cDDP-treated EOC patients. The in vitro assays also indicate that core fucosylation of CTR1 was significantly upregulated in cDDP-resistant A2780CP cells compared to the cDDP-sensitive A2780S cells. Intriguingly, the hyper core fucosylation suppressed the CTR1-cDDP interactions and cDDP-uptake into A2780CP cells. Conversely, contrast to the Fut8+/+ mouse ovarian epithelial cells, the Fut8-deleted (Fut8-/- ) cells obviously showed higher cDDP-uptake. Furthermore, the recovered core fucosylation induced the suppression of cDDP-uptake in Fut8-restored ovarian epithelial cells. In addition, the core fucosylation could regulate the phosphorylation of cDDP-resistance-associated molecules, such as AKT, ERK, JNK, and mTOR. Our findings suggest that the core fucosylation of CTR1 plays an important role in the cellular cDDP-uptake and thus provide new strategies for improving the outcome of cDDP based chemotherapy of EOC.
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Affiliation(s)
- Xiaoxue Lv
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Jiazhe Song
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Kai Xue
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Zhi Li
- Clinical Laboratory, Dalian Municipal Central Hospital, Dalian, Liaoning, China
| | - Ming Li
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Danishi Zahid
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Hongyu Cao
- College of Life Science and Technology, Dalian University, Liaoning, China
| | - Lu Wang
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Wanli Song
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Tonghui Ma
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
| | - Jianguo Gu
- Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Miyagi, Japan
| | - Wenzhe Li
- College of Basic Medical Sciences, Dalian Medical University, Liaoning, China
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27
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Yan S, Wang H, Schachter H, Jin C, Wilson IBH, Paschinger K. Ablation of N-acetylglucosaminyltransferases in Caenorhabditis induces expression of unusual intersected and bisected N-glycans. Biochim Biophys Acta Gen Subj 2018; 1862:2191-2203. [PMID: 29981898 PMCID: PMC6173287 DOI: 10.1016/j.bbagen.2018.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/30/2018] [Accepted: 07/04/2018] [Indexed: 12/17/2022]
Abstract
The modification in the Golgi of N-glycans by N-acetylglucosaminyltransferase I (GlcNAc-TI, MGAT1) can be considered to be a hallmark of multicellular eukaryotes as it is found in all metazoans and plants, but rarely in unicellular organisms. The enzyme is key for the normal processing of N-glycans to either complex or paucimannosidic forms, both of which are found in the model nematode Caenorhabditis elegans. Unusually, this organism has three different GlcNAc-TI genes (gly-12, gly-13 and gly-14); therefore, a complete abolition of GlcNAc-TI activity required the generation of a triple knock-out strain. Previously, the compositions of N-glycans from this mutant were described, but no detailed structures. Using an off-line HPLC-MALDI-TOF-MS approach combined with exoglycosidase digestions and MS/MS, we reveal that the multiple hexose residues of the N-glycans of the gly-12;gly-13;gly-14 triple mutant are not just mannose, but include galactoses in three different positions (β-intersecting, β-bisecting and α-terminal) on isomeric forms of Hex4-8HexNAc2 structures; some of these structures are fucosylated and/or methylated. Thus, the N-glycomic repertoire of Caenorhabditis is even wider than expected and exhibits a large degree of plasticity even in the absence of key glycan processing enzymes from the Golgi apparatus.
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Affiliation(s)
- Shi Yan
- Department für Chemie, Universität für Bodenkultur, 1190 Wien, Austria,Institut für Parasitologie, Veterinärmedizinische Universität Wien, 1210 Wien, Austria
| | - Huijie Wang
- Department für Chemie, Universität für Bodenkultur, 1190 Wien, Austria
| | - Harry Schachter
- Hospital for Sick Children and University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Chunsheng Jin
- Institutionen för Biomedicin, Göteborgs universitet, 405 30 Göteborg, Sweden
| | - Iain B. H. Wilson
- Department für Chemie, Universität für Bodenkultur, 1190 Wien, Austria,To whom correspondence should be addressed:
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28
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Subramanian SP, Babu P, Palakodeti D, Subramanian R. Identification of multiple isomeric core chitobiose-modified high-mannose and paucimannose N-glycans in the planarian Schmidtea mediterranea. J Biol Chem 2018; 293:6707-6720. [PMID: 29475940 PMCID: PMC5936828 DOI: 10.1074/jbc.ra117.000782] [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: 11/03/2017] [Revised: 02/20/2018] [Indexed: 01/17/2023] Open
Abstract
Cell surface–associated glycans mediate many cellular processes, including adhesion, migration, signaling, and extracellular matrix organization. The galactosylation of core fucose (GalFuc epitope) in paucimannose and complex-type N-glycans is characteristic of protostome organisms, including flatworms (planarians). Although uninvestigated, the structures of these glycans may play a role in planarian regeneration. Whole-organism MALDI-MS analysis of N-linked oligosaccharides from the planarian Schmidtea mediterranea revealed the presence of multiple isomeric high-mannose and paucimannose structures with unusual mono-, di-, and polygalactosylated (n = 3–5) core fucose structures; the latter structures have not been reported in other systems. Di- and trigalactosylated core fucoses were the most dominant glycomers. N-Glycans showed extensive, yet selective, methylation patterns, ranging from non-methylated to polymethylated glycoforms. Although the majority of glycoforms were polymethylated, a small fraction also consisted of non-methylated glycans. Remarkably, monogalactosylated core fucose remained unmethylated, whereas its polygalactosylated forms were methylated, indicating structurally selective methylation. Using database searches, we identified two potential homologs of the Galβ1–4Fuc–synthesizing enzyme from nematodes (GALT-1) that were expressed in the prepharyngeal, pharyngeal, and mesenchymal regions in S. mediterranea. The presence of two GALT-1 homologs suggests different requirements for mono- and polygalactosylation of core fucose for the formation of multiple isomers. Furthermore, we observed variations in core fucose glycosylation patterns in different planarian strains, suggesting evolutionary adaptation in fucose glycosylation. The various core chitobiose modifications and methylations create >60 different glycoforms in S. mediterranea. These results contribute greatly to our understanding of N-glycan biosynthesis and suggest the presence of a GlcNAc-independent biosynthetic pathway in S. mediterranea.
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Affiliation(s)
- Sabarinath Peruvemba Subramanian
- From the Institute for Stem Cell Biology and Regenerative Medicine (inStem), GKVK Post Office, Bellary Road, Bangalore 560065, Karnataka, India and
| | - Ponnusamy Babu
- Glycomics and Glycoproteomics Facility, Centre for Cellular and Molecular Platforms (C-CAMP), GKVK Post Office, Bellary Road, Bangalore 560065, Karnataka, India
| | - Dasaradhi Palakodeti
- From the Institute for Stem Cell Biology and Regenerative Medicine (inStem), GKVK Post Office, Bellary Road, Bangalore 560065, Karnataka, India and
| | - Ramaswamy Subramanian
- From the Institute for Stem Cell Biology and Regenerative Medicine (inStem), GKVK Post Office, Bellary Road, Bangalore 560065, Karnataka, India and
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29
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Ma J, Sanda M, Wei R, Zhang L, Goldman R. Quantitative analysis of core fucosylation of serum proteins in liver diseases by LC-MS-MRM. J Proteomics 2018; 189:67-74. [PMID: 29427759 DOI: 10.1016/j.jprot.2018.02.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/30/2018] [Accepted: 02/02/2018] [Indexed: 12/22/2022]
Abstract
Aberrant core fucosylation of proteins has been linked to liver diseases. In this study, we carried out multiple reaction monitoring (MRM) quantification of core fucosylated N-glycopeptides of serum proteins partially deglycosylated by a combination of endoglycosidases (endoF1, endoF2, and endoF3). To minimize variability associated with the preparatory steps, the analysis was performed without enrichment of glycopeptides or fractionation of serum besides the nanoRP chromatography. Specifically, we quantified core fucosylation of 22 N-glycopeptides derived from 17 proteins together with protein abundance of these glycoproteins in a cohort of 45 participants (15 disease-free control, 15 fibrosis and 15 cirrhosis patients) using a multiplex nanoUPLC-MS-MRM workflow. We find increased core fucosylation of 5 glycopeptides at the stage of liver fibrosis (i.e., N630 of serotransferrin, N107 of alpha-1-antitrypsin, N253 of plasma protease C1 inhibitor, N397 of ceruloplasmin, and N86 of vitronectin), increase of additional 6 glycopeptides at the stage of cirrhosis (i.e., N138 and N762 of ceruloplasmin, N354 of clusterin, N187 of hemopexin, N71 of immunoglobulin J chain, and N127 of lumican), while the degree of core fucosylation of 10 glycopeptides did not change. Interestingly, although we observe an increase in the core fucosylation at N86 of vitronectin in liver fibrosis, core fucosylation decreases on the N169 glycopeptide of the same protein. Our results demonstrate that the changes in core fucosylation are protein and site specific during the progression of fibrotic liver disease and independent of the changes in the quantity of N-glycoproteins. It is expected that the fully optimized multiplex LC-MS-MRM assay of core fucosylated glycopeptides will be useful for the serologic assessment of the fibrosis of liver. BIOLOGICAL SIGNIFICANCE: We have quantified the difference in core fucosylation among three comparison groups (healthy control, fibrosis and cirrhosis patients) using a sensitive and selective LC-MS-MRM method. Despite an overall increase in core fucosylation of many of the glycoproteins that we examined, core fucosylation changed in a protein- and site-specific manner. Moreover, increased and decreased fucosylation was observed on different N-glycopeptides of the same protein. Altered core fucosylation of N-glycopeptides might be used as an alternative serologic assay for the evaluation of fibrotic liver disease.
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Affiliation(s)
- Junfeng Ma
- Proteomics and Metabolomics Shared Resource, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Miloslav Sanda
- Proteomics and Metabolomics Shared Resource, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Renhuizi Wei
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Lihua Zhang
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Radoslav Goldman
- Proteomics and Metabolomics Shared Resource, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA; Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC 20057, USA.
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30
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Benedetti E, Pučić-Baković M, Keser T, Wahl A, Hassinen A, Yang JY, Liu L, Trbojević-Akmačić I, Razdorov G, Štambuk J, Klarić L, Ugrina I, Selman MHJ, Wuhrer M, Rudan I, Polasek O, Hayward C, Grallert H, Strauch K, Peters A, Meitinger T, Gieger C, Vilaj M, Boons GJ, Moremen KW, Ovchinnikova T, Bovin N, Kellokumpu S, Theis FJ, Lauc G, Krumsiek J. Network inference from glycoproteomics data reveals new reactions in the IgG glycosylation pathway. Nat Commun 2017; 8:1483. [PMID: 29133956 PMCID: PMC5684356 DOI: 10.1038/s41467-017-01525-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 09/25/2017] [Indexed: 12/19/2022] Open
Abstract
Immunoglobulin G (IgG) is a major effector molecule of the human immune response, and aberrations in IgG glycosylation are linked to various diseases. However, the molecular mechanisms underlying protein glycosylation are still poorly understood. We present a data-driven approach to infer reactions in the IgG glycosylation pathway using large-scale mass-spectrometry measurements. Gaussian graphical models are used to construct association networks from four cohorts. We find that glycan pairs with high partial correlations represent enzymatic reactions in the known glycosylation pathway, and then predict new biochemical reactions using a rule-based approach. Validation is performed using data from a GWAS and results from three in vitro experiments. We show that one predicted reaction is enzymatically feasible and that one rejected reaction does not occur in vitro. Moreover, in contrast to previous knowledge, enzymes involved in our predictions colocalize in the Golgi of two cell lines, further confirming the in silico predictions.
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Affiliation(s)
- Elisa Benedetti
- Institute of Computational Biology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | | | - Toma Keser
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Annika Wahl
- Institute of Epidemiology 2, Research Unit Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Institute of Epidemiology 2, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Antti Hassinen
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, FI-90014 Oulu, Finland
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
| | - Lin Liu
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
| | | | | | - Jerko Štambuk
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Lucija Klarić
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, EH8 9AG Edinburgh, UK
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, EH4 2XU Edinburgh, UK
| | - Ivo Ugrina
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
- Faculty of Science, University of Split, 21000 Split, Croatia
- Intellomics Ltd., 10000 Zagreb, Croatia
| | | | - Manfred Wuhrer
- Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Igor Rudan
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, EH8 9AG Edinburgh, UK
| | - Ozren Polasek
- University of Split School of Medicine, 21000 Split, Croatia
- Gen-info Ltd., 10000 Zagreb, Croatia
| | - Caroline Hayward
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, EH4 2XU Edinburgh, UK
| | - Harald Grallert
- Institute of Epidemiology 2, Research Unit Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Institute of Epidemiology 2, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- German Center for Diabetes Research (DZD), 40225 Düsseldorf, Germany
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Chair of Genetic Epidemiology, Ludwig-Maximilians Universität, 81577 Munich, Germany
| | - Annette Peters
- Institute of Epidemiology 2, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Thomas Meitinger
- Institute of Human Genetics, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Christian Gieger
- Institute of Epidemiology 2, Research Unit Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Institute of Epidemiology 2, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Marija Vilaj
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Kelley W. Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602 USA
| | - Tatiana Ovchinnikova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Nicolai Bovin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Sakari Kellokumpu
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, FI-90014 Oulu, Finland
| | - Fabian J. Theis
- Institute of Computational Biology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Department of Mathematics, Technical University Munich, 85748 Garching bei München, Germany
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Jan Krumsiek
- Institute of Computational Biology, Helmholtz Zentrum München—German Research Center for Environmental Health, 85764 Neuherberg, Germany
- German Center for Diabetes Research (DZD), 40225 Düsseldorf, Germany
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Calderon AD, Li L, Wang PG. FUT8: from biochemistry to synthesis of core-fucosylated N-glycans. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-0923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Glycosylation is a major posttranslational modification of proteins. Modification in structure on N-glycans leads to many diseases. One of such modifications is core α-1,6 fucosylation, which is only found in eukaryotes. For this reason, lots of research has been done on approaches to synthesize core-fucosylated N-glycans both chemically and enzymatically, in order to have well defined structures that can be used as probes for glycan analysis and identifying functions of glycan-binding proteins. This review will focus on FUT8, the enzyme responsible for core fucosylation in mammals and the strategies that have been developed for the synthesis of core fucosylated N-glycans have been synthesized so far.
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Affiliation(s)
- Angie D. Calderon
- Department of Chemistry and Center for Diagnostics and Therapeutics , Georgia State University , Atlanta , GA 30303 , USA
| | - Lei Li
- Department of Chemistry and Center for Diagnostics and Therapeutics , Georgia State University , Atlanta , GA 30303 , USA
| | - Peng G. Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics , Georgia State University , Atlanta , GA 30303 , USA
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Yang Q, Zhang R, Cai H, Wang LX. Revisiting the substrate specificity of mammalian α1,6-fucosyltransferase reveals that it catalyzes core fucosylation of N-glycans lacking α1,3-arm GlcNAc. J Biol Chem 2017; 292:14796-14803. [PMID: 28729420 DOI: 10.1074/jbc.m117.804070] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/17/2017] [Indexed: 01/21/2023] Open
Abstract
The mammalian α1,6-fucosyltransferase (FUT8) catalyzes the core fucosylation of N-glycans in the biosynthesis of glycoproteins. Previously, intensive in vitro studies with crude extract or purified enzyme concluded that the attachment of a GlcNAc on the α1,3 mannose arm of N-glycan is essential for FUT8-catalyzed core fucosylation. In contrast, we have recently shown that expression of erythropoietin in a GnTI knock-out, FUT8-overexpressing cell line results in the production of fully core-fucosylated glycoforms of the oligomannose substrate Man5GlcNAc2, suggesting that FUT8 can catalyze core fucosylation of N-glycans lacking an α1,3-arm GlcNAc in cells. Here, we revisited the substrate specificity of FUT8 by examining its in vitro activity toward an array of selected N-glycans, glycopeptides, and glycoproteins. Consistent with previous studies, we found that free N-glycans lacking an unmasked α1,3-arm GlcNAc moiety are not FUT8 substrates. However, Man5GlcNAc2 glycan could be efficiently core-fucosylated by FUT8 in an appropriate protein/peptide context, such as with the erythropoietin protein, a V3 polypeptide derived from HIV-1 gp120, or a simple 9-fluorenylmethyl chloroformate-protected Asn moiety. Interestingly, when placed in the V3 polypeptide context, a mature bi-antennary complex-type N-glycan also could be core-fucosylated by FUT8, albeit at much lower efficiency than the Man5GlcNAc2 peptide. This study represents the first report of in vitro FUT8-catalyzed core fucosylation of N-glycans lacking the α1,3-arm GlcNAc moiety. Our results suggest that an appropriate polypeptide context or other adequate structural elements in the acceptor substrate could facilitate the core fucosylation by FUT8.
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Affiliation(s)
- Qiang Yang
- From the Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Roushu Zhang
- From the Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Hui Cai
- From the Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Lai-Xi Wang
- From the Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
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N-glycans of growth factor receptors: their role in receptor function and disease implications. Clin Sci (Lond) 2017; 130:1781-92. [PMID: 27612953 DOI: 10.1042/cs20160273] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/08/2016] [Indexed: 11/17/2022]
Abstract
Numerous signal-transduction-related molecules are secreted proteins or membrane proteins, and the mechanism by which these molecules are regulated by glycan chains is a very important issue for developing an understanding of the cellular events that transpire. This review covers the functional regulation of epidermal growth factor receptor (EGFR), ErbB3 and the transforming growth factor β (TGF-β) receptor by N-glycans. This review shows that the N-glycans play important roles in regulating protein conformation and interactions with carbohydrate recognition molecules. These results point to the possibility of a novel strategy for controlling cell signalling and developing novel glycan-based therapeutics.
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Manabe Y, Kasahara S, Takakura Y, Yang X, Takamatsu S, Kamada Y, Miyoshi E, Yoshidome D, Fukase K. Development of α1,6-fucosyltransferase inhibitors through the diversity-oriented syntheses of GDP-fucose mimics using the coupling between alkyne and sulfonyl azide. Bioorg Med Chem 2017; 25:2844-2850. [PMID: 28284868 DOI: 10.1016/j.bmc.2017.02.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/13/2017] [Accepted: 02/17/2017] [Indexed: 12/18/2022]
Abstract
We developed α1,6-fucosyltransferase (FUT8) inhibitors through a diversity-oriented synthesis. The coupling reaction between the fucose unit containing alkyne and the guanine unit containing sulfonyl azide under various conditions afforded a series of Guanosine 5'-diphospho-β-l-fucose (GDP-fucose) analogs. The synthesized compounds displayed FUT8 inhibition activity. A docking study revealed that the binding mode of the inhibitor synthesized with FUT8 was similar to that of GDP-fucose.
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Affiliation(s)
- Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Satomi Kasahara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yohei Takakura
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Xiaoxiao Yang
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shinji Takamatsu
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihiro Kamada
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Eiji Miyoshi
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Daisuke Yoshidome
- Schrödinger K.K., 17F Marunouchi Trust Tower North, 1-8-1 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
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The underestimated N-glycomes of lepidopteran species. Biochim Biophys Acta Gen Subj 2017; 1861:699-714. [PMID: 28077298 DOI: 10.1016/j.bbagen.2017.01.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/23/2016] [Accepted: 01/06/2017] [Indexed: 11/20/2022]
Abstract
BACKGROUND Insects are significant to the environment, agriculture, health and biotechnology. Many of these aspects display some relationship to glycosylation, e.g., in case of pathogen binding or production of humanised antibodies; for a long time, it has been considered that insect N-glycosylation potentials are rather similar and simple, but as more species are glycomically analysed in depth, it is becoming obvious that there is indeed a large structural diversity and interspecies variability. METHODS Using an off-line LC-MALDI-TOF MS approach, we have analysed the N-glycomes of two lepidopteran species (the cabbage looper Trichoplusia ni and the gypsy moth Lymantria dispar) as well as of the commonly-used T. ni High Five cell line. RESULTS We detected not only sulphated, glucuronylated, core difucosylated and Lewis-like antennal fucosylated structures, but also the zwitterion phosphorylcholine on antennal GlcNAc residues, a modification otherwise familiar from nematodes; in L. dispar, N-glycans with glycolipid-like antennae containing α-linked N-acetylgalactosamine were also revealed. CONCLUSION The lepidopteran glycomes analysed not only display core α1,3-fucosylation, which is foreign to mammals, but also up to 5% anionic and/or zwitterionic glycans previously not found in these species. SIGNIFICANCE The occurrence of anionic and zwitterionic glycans in the Lepidoptera data is not only of glycoanalytical and evolutionary interest, but is of biotechnological relevance as lepidopteran cell lines are potential factories for recombinant glycoprotein production.
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Takahashi M, Kizuka Y, Ohtsubo K, Gu J, Taniguchi N. Disease-associated glycans on cell surface proteins. Mol Aspects Med 2016; 51:56-70. [PMID: 27131428 DOI: 10.1016/j.mam.2016.04.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 04/23/2016] [Indexed: 01/02/2023]
Abstract
Most of membrane molecules including cell surface receptors and secreted proteins including ligands are glycoproteins and glycolipids. Therefore, identifying the functional significance of glycans is crucial for developing an understanding of cell signaling and subsequent physiological and pathological cellular events. In particular, the function of N-glycans associated with cell surface receptors has been extensively studied since they are directly involved in controlling cellular functions. In this review, we focus on the roles of glycosyltransferases that are involved in the modification of N-glycans and their target proteins such as epidermal growth factor receptor (EGFR), ErbB3, transforming growth factor β (TGF-β) receptor, T-cell receptors (TCR), β-site APP cleaving enzyme (BACE1), glucose transporter 2 (GLUT2), E-cadherin, and α5β1 integrin in relation to diseases and epithelial-mesenchymal transition (EMT) process. Above of those proteins are subjected to being modified by several glycosyltransferases such as N-acetylglucosaminyltransferase III (GnT-III), N-acetylglucosaminyltransferase IV (GnT-IV), N-acetylglucosaminyltransferase V (GnT-V), α2,6 sialyltransferase 1 (ST6GAL1), and α1,6 fucosyltransferase (Fut8), which are typical N-glycan branching enzymes and play pivotal roles in regulating the function of cell surface receptors in pathological cell signaling.
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Affiliation(s)
- Motoko Takahashi
- Department of Biochemistry, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-ku, Sapporo 060-8556, Japan
| | - Yasuhiko Kizuka
- Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center, Global Research Cluster, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan
| | - Kazuaki Ohtsubo
- Department of Analytical Biochemistry, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Chuo-ku, Kumamoto 862-0976, Japan
| | - Jianguo Gu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsusima, Aobaku, Sendai, Miyagi 981-8558, Japan
| | - Naoyuki Taniguchi
- Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center, Global Research Cluster, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan.
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37
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Calderon AD, Liu Y, Li X, Wang X, Chen X, Li L, Wang PG. Substrate specificity of FUT8 and chemoenzymatic synthesis of core-fucosylated asymmetric N-glycans. Org Biomol Chem 2016; 14:4027-31. [PMID: 27080952 PMCID: PMC4852481 DOI: 10.1039/c6ob00586a] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substrate specificity studies of human FUT8 using 77 structurally-defined N-glycans as acceptors showed a strict requirement towards the α1,3-mannose branch, but a great promiscuity towards the α1,6-mannose branch. Accordingly, a chemoenzymatic strategy was developed for the efficient synthesis of core-fucosylated asymmetric N-glycans.
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Affiliation(s)
- Angie D Calderon
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
| | - Yunpeng Liu
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA. and Chemily LLC, Atlanta, GA 30303, USA
| | - Xu Li
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
| | - Xuan Wang
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
| | - Xi Chen
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA 95616, USA
| | - Lei Li
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
| | - Peng G Wang
- Department of Chemistry and Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
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38
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Yang Q, Wang LX. Mammalian α-1,6-Fucosyltransferase (FUT8) Is the Sole Enzyme Responsible for the N-Acetylglucosaminyltransferase I-independent Core Fucosylation of High-mannose N-Glycans. J Biol Chem 2016; 291:11064-71. [PMID: 27008861 DOI: 10.1074/jbc.m116.720789] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 01/19/2023] Open
Abstract
Understanding the biosynthetic pathway of protein glycosylation in various expression cell lines is important for controlling and modulating the glycosylation profiles of recombinant glycoproteins. We found that expression of erythropoietin (EPO) in a HEK293S N-acetylglucosaminyltransferase I (GnT I)(-/-) cell line resulted in production of the Man5GlcNAc2 glycoforms, in which more than 50% were core-fucosylated, implicating a clear GnT I-independent core fucosylation pathway. Expression of GM-CSF and the ectodomain of FcγIIIA receptor led to ∼30% and 3% core fucosylation, suggesting that the level of core fucosylation also depends on the nature of the recombinant proteins. To elucidate the GnT I-independent core fucosylation pathway, we generated a stable HEK293S GnT I(-/-) cell line with either knockdown or overexpression of FUT8 by a highly efficient lentivirus-mediated gene transfer approach. We found that the EPO produced from the FUT8 knockdown cell line was the pure Man5GlcNAc2 glycoform, whereas that produced from the FUT8-overexpressing cell line was found to be fully core-fucosylated oligomannose glycan (Man5GlcNAc2Fuc). These results provide direct evidence that FUT8, the mammalian α1,6-fucosyltransferase, is the sole enzyme responsible for the GnT I-independent core fucosylation pathway. The production of the homogeneous core-fucosylated Man5GlcNAc2 glycoform of EPO in the FUT8-overexpressed HEK293S GnT I(-/-) cell line represents the first example of production of fully core-fucosylated high-mannose glycoforms.
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Affiliation(s)
- Qiang Yang
- From the Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, Maryland 20742
| | - Lai-Xi Wang
- From the Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, Maryland 20742
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Vander Jagt CJ, Whitley JC, Cocks BG, Goddard ME. Gene expression in the mammary gland of the tammar wallaby during the lactation cycle reveals conserved mechanisms regulating mammalian lactation. Reprod Fertil Dev 2015; 28:RD14210. [PMID: 25701950 DOI: 10.1071/rd14210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 12/21/2014] [Indexed: 12/16/2022] Open
Abstract
The tammar wallaby (Macropus eugenii), an Australian marsupial, has evolved a different lactation strategy compared with eutherian mammals, making it a valuable comparative model for lactation studies. The tammar mammary gland was investigated for changes in gene expression during key stages of the lactation cycle using microarrays. Differentially regulated genes were identified, annotated and subsequent gene ontologies, pathways and molecular networks analysed. Major milk-protein gene expression changes during lactation were in accord with changes in milk-protein secretion. However, other gene expression changes included changes in genes affecting mRNA stability, hormone and cytokine signalling and genes for transport and metabolism of amino acids and lipids. Some genes with large changes in expression have poorly known roles in lactation. For instance, SIM2 was upregulated at lactation initiation and may inhibit proliferation and involution of mammary epithelial cells, while FUT8 was upregulated in Phase 3 of lactation and may support the large increase in milk volume that occurs at this point in the lactation cycle. This pattern of regulation has not previously been reported and suggests that these genes may play a crucial regulatory role in marsupial milk production and are likely to play a related role in other mammals.
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40
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Ronda C, Pedersen LE, Hansen HG, Kallehauge TB, Betenbaugh MJ, Nielsen AT, Kildegaard HF. Accelerating genome editing in CHO cells using CRISPR Cas9 and CRISPy, a web-based target finding tool. Biotechnol Bioeng 2014; 111:1604-16. [PMID: 24827782 PMCID: PMC4312910 DOI: 10.1002/bit.25233] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 03/01/2014] [Accepted: 03/07/2014] [Indexed: 11/07/2022]
Abstract
Chinese hamster ovary (CHO) cells are widely used in the biopharmaceutical industry as a host for the production of complex pharmaceutical proteins. Thus genome engineering of CHO cells for improved product quality and yield is of great interest. Here, we demonstrate for the first time the efficacy of the CRISPR Cas9 technology in CHO cells by generating site-specific gene disruptions in COSMC and FUT8, both of which encode proteins involved in glycosylation. The tested single guide RNAs (sgRNAs) created an indel frequency up to 47.3% in COSMC, while an indel frequency up to 99.7% in FUT8 was achieved by applying lectin selection. All eight sgRNAs examined in this study resulted in relatively high indel frequencies, demonstrating that the Cas9 system is a robust and efficient genome-editing methodology in CHO cells. Deep sequencing revealed that 85% of the indels created by Cas9 resulted in frameshift mutations at the target sites, with a strong preference for single base indels. Finally, we have developed a user-friendly bioinformatics tool, named "CRISPy" for rapid identification of sgRNA target sequences in the CHO-K1 genome. The CRISPy tool identified 1,970,449 CRISPR targets divided into 27,553 genes and lists the number of off-target sites in the genome. In conclusion, the proven functionality of Cas9 to edit CHO genomes combined with our CRISPy database have the potential to accelerate genome editing and synthetic biology efforts in CHO cells.
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Affiliation(s)
- Carlotta Ronda
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
| | - Lasse Ebdrup Pedersen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
| | - Henning Gram Hansen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
| | - Thomas Beuchert Kallehauge
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
| | - Michael J Betenbaugh
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
- Department of Chemical and Biomolecular Engineering, Johns Hopkins UniversityBaltimore, Maryland
| | - Alex Toftgaard Nielsen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
| | - Helene Faustrup Kildegaard
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkHørsholm, Denmark; telephone: +45 2012 4629; fax: +45 4525 8001; e-mail:
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Ihara H, Okada T, Ikeda Y. Cloning, expression and characterization of Bombyx mori α1,6-fucosyltransferase. Biochem Biophys Res Commun 2014; 450:953-60. [DOI: 10.1016/j.bbrc.2014.06.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 06/17/2014] [Indexed: 01/12/2023]
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Kurimoto A, Kitazume S, Kizuka Y, Nakajima K, Oka R, Fujinawa R, Korekane H, Yamaguchi Y, Wada Y, Taniguchi N. The absence of core fucose up-regulates GnT-III and Wnt target genes: a possible mechanism for an adaptive response in terms of glycan function. J Biol Chem 2014; 289:11704-11714. [PMID: 24619415 DOI: 10.1074/jbc.m113.502542] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Glycans play key roles in a variety of protein functions under normal and pathological conditions, but several glycosyltransferase-deficient mice exhibit no or only mild phenotypes due to redundancy or compensation of glycan functions. However, we have only a limited understanding of the underlying mechanism for these observations. Our previous studies indicated that 70% of Fut8-deficient (Fut8(-/-)) mice that lack core fucose structure die within 3 days after birth, but the remainder survive for up to several weeks although they show growth retardation as well as emphysema. In this study, we show that, in mouse embryonic fibroblasts (MEFs) from Fut8(-/-) mice, another N-glycan branching structure, bisecting GlcNAc, is specifically up-regulated by enhanced gene expression of the responsible enzyme N-acetylglucosaminyltransferase III (GnT-III). As candidate target glycoproteins for bisecting GlcNAc modification, we confirmed that level of bisecting GlcNAc on β1-integrin and N-cadherin was increased in Fut8(-/-) MEFs. Moreover using mass spectrometry, glycan analysis of IgG1 in Fut8(-/-) mouse serum demonstrated that bisecting GlcNAc contents were also increased by Fut8 deficiency in vivo. As an underlying mechanism, we found that in Fut8(-/-) MEFs Wnt/β-catenin signaling is up-regulated, and an inhibitor against Wnt signaling was found to abrogate GnT-III expression, indicating that Wnt/β-catenin is involved in GnT-III up-regulation. Furthermore, various oxidative stress-related genes were also increased in Fut8(-/-) MEFs. These data suggest that Fut8(-/-) mice adapted to oxidative stress, both ex vivo and in vivo, by inducing various genes including GnT-III, which may compensate for the loss of core fucose functions.
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Affiliation(s)
- Ayako Kurimoto
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Shinobu Kitazume
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Yasuhiko Kizuka
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Kazuki Nakajima
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Ritsuko Oka
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Reiko Fujinawa
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Hiroaki Korekane
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, RIKEN Global Research Cluster, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198
| | - Yoshinao Wada
- Research Institute, Osaka Medical Center for Maternal and Child Health, Izumi, Osaka, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Naoyuki Taniguchi
- Disease Glycomic Team, RIKEN-Max Planck Joint Research Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198.
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43
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Kötzler MP, Blank S, Bantleon FI, Wienke M, Spillner E, Meyer B. Donor assists acceptor binding and catalysis of human α1,6-fucosyltransferase. ACS Chem Biol 2013; 8:1830-40. [PMID: 23730796 DOI: 10.1021/cb400140u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
α1,6-Core-fucosyltransferase (FUT8) is a vital enzyme in mammalian physiological and pathophysiological processes such as tumorigenesis and progress of, among others, non-small cell lung cancer and colon carcinoma. It was also shown that therapeutic antibodies have a dramatically higher efficacy if the α1,6-fucosyl residue is absent. However, specific and potent inhibitors for FUT8 and related enzymes are lacking. Hence, it is crucial to elucidate the structural basis of acceptor binding and the catalytic mechanism. We present here the first structural model of FUT8 in complex with its acceptor and donor molecules. An unusually large acceptor, i.e., a hexasaccharide from the core of N-glycans, is required as minimal structure. Acceptor substrate binding of FUT8 is being dissected experimentally by STD NMR and SPR and theoretically by molecular dynamics simulations. The acceptor binding site forms an unusually large and shallow binding site. Binding of the acceptor to the enzyme is much faster and stronger if the donor is present. This is due to strong hydrogen bonding between O6 of the proximal N-acetylglucosamine and an oxygen atom of the β-phosphate of GDP-fucose. Therefore, we propose an ordered Bi Bi mechanism for FUT8 where the donor molecule binds first. No specific amino acid is present that could act as base during catalysis. Our results indicate a donor-assisted mechanism, where an oxygen of the β-phosphate deprotonates the acceptor. Knowledge of the mechanism of FUT8 is now being used for rational design of targeted inhibitors to address metastasis and prognosis of carcinomas.
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Affiliation(s)
- Miriam P. Kötzler
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
| | - Simon Blank
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
| | - Frank I. Bantleon
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
| | - Martin Wienke
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
| | - Edzard Spillner
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
| | - Bernd Meyer
- Institute
of Organic Chemistry and ‡Institute of Biochemistry and Molecular Biology, University of Hamburg, Hamburg 20146,
Germany
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Gu W, Fukuda T, Isaji T, Hashimoto H, Wang Y, Gu J. α1,6-Fucosylation regulates neurite formation via the activin/phospho-Smad2 pathway in PC12 cells: the implicated dual effects of Fut8 for TGF-β/activin-mediated signaling. FASEB J 2013; 27:3947-58. [PMID: 23796784 DOI: 10.1096/fj.12-225805] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
It is well known that α1,6-fucosyltransferase (Fut8) and its products, α1,6-fucosylated N-glycans, are highly expressed in brain tissue. Recently, we reported that Fut8-knockout mice exhibited multiple behavioral abnormalities with a schizophrenia-like phenotype, suggesting that α1,6-fucosylation plays important roles in the brain and neuron system. In the present study, we screened several neural cell lines and found that PC12 cells express the highest levels of α1,6-fucosylation. The knockdown (KD) of Fut8 promoted a significant enhancement of neurite formation and induction of neurofilament expression. Surprisingly, the levels of phospho-Smad2 were greatly increased in the KD cells. Finally, we found that the activin-mediated signal pathway was essential for these changes in KD cells. Exogenous activin, not TGF-β1, induced neurite outgrowth and phospho-Smad2. In addition, the α1,6-fucosylation level on the activin receptors was greatly decreased in KD cells, while the total expression level was unchanged, suggesting that α1,6-fucosylation negatively regulated activin-mediated signaling. Furthermore, inhibition of activin receptor-mediated signaling or restoration of Fut8 expression rescued cell morphology and phospho-Smad2 levels, which were enhanced in KD cells. Considering the fact that α1,6-fucosylation is important for TGF-β-mediated signaling, the results of this study strongly suggest that Fut8 plays a dual role in TGF-β/activin-mediated signaling.
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Affiliation(s)
- Wei Gu
- 1Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai Miyagi, 981-8558, Japan.
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Ihara H, Hanashima S, Tsukamoto H, Yamaguchi Y, Taniguchi N, Ikeda Y. Difucosylation of chitooligosaccharides by eukaryote and prokaryote α1,6-fucosyltransferases. Biochim Biophys Acta Gen Subj 2013; 1830:4482-90. [PMID: 23688399 DOI: 10.1016/j.bbagen.2013.05.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 04/24/2013] [Accepted: 05/09/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND The synthesis of eukaryotic N-glycans and the rhizobia Nod factor both involve α1,6-fucosylation. These fucosylations are catalyzed by eukaryotic α1,6-fucosyltransferase, FUT8, and rhizobial enzyme, NodZ. The two enzymes have similar enzymatic properties and structures but display different acceptor specificities: FUT8 and NodZ prefer N-glycan and chitooligosaccharide, respectively. This study was conducted to examine the fucosylation of chitooligosaccharides by FUT8 and NodZ and to characterize the resulting difucosylated chitooligosaccharides in terms of their resistance to hydrolysis by glycosidases. METHODS The issue of whether FUT8 or NodZ catalyzes the further fucosylation of chitooligosaccharides that had first been monofucosylated by the other. The oligosaccharide products from the successive reactions were analyzed by normal-phase high performance liquid chromatography, mass spectrometry and nuclear magnetic resonance. The effect of difucosylation on sensitivity to glycosidase digestion was also investigated. RESULTS Both FUT8 and NodZ are able to further fucosylate the monofucosylated chitooligosaccharides. Structural analyses of the resulting oligosaccharides showed that the reducing terminal GlcNAc residue and the third GlcNAc residue from the non-reducing end are fucosylated via α1,6-linkages. The difucosylation protected the oligosaccharides from extensive degradation to GlcNAc by hexosamidase and lysozyme, and also even from defucosylation by fucosidase. CONCLUSIONS The sequential actions of FUT8 and NodZ on common substrates effectively produce site-specific-difucosylated chitooligosaccharides. This modification confers protection to the oligosaccharides against various glycosidases. GENERAL SIGNIFICANCE The action of a combination of eukaryotic and bacterial α1,6-fucosyltransferases on chitooligosaccharides results in the formation of difucosylated products, which serves to stabilize chitooligosaccharides against the action of glycosidases.
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Key Words
- COSY
- Chitooligosaccharide
- FUT8-monofucosylated chitooligosaccharide
- Fuc
- Fucosylation
- Fucosyltransferase
- GDP
- GN1
- GN2
- GN3
- GN4
- GN5
- GN6
- GNF
- GNFF′
- GNF′
- GlcNAc or N-acetylglucosamine
- Glycosidase
- HPLC
- HSQC
- Lysozyme
- MALDI
- MS
- N,N′,N″,N‴,N‴′,N‴″-hexaacetyl chitohexaose
- N,N′,N″,N‴,N‴′-pentaacetyl chitopentaose
- N,N′,N″,N‴-tetraacetyl chitotetraose
- N,N′,N″-triacetyl chitotriose
- N,N′-diacetyl chitobiose
- NMR
- NodZ-monofucosylated chitooligosaccharide
- TOCSY
- TOF
- correlation spectroscopy
- difucosylated chitooligosaccharide
- fucose
- guanine nucleotide diphosphate
- hetero-nuclear single quantum coherence
- high performance liquid chromatography
- mass spectrometry
- matrix-assisted laser desorption/ionization
- nuclear magnetic resonance
- time of flight
- total correlation spectroscopy
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Affiliation(s)
- Hideyuki Ihara
- Department of Biomolecular Sciences, Saga University Faculty of Medicine, Saga, Japan
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Kötzler MP, Blank S, Bantleon FI, Spillner E, Meyer B. Donor substrate binding and enzymatic mechanism of human core α1,6-fucosyltransferase (FUT8). Biochim Biophys Acta Gen Subj 2012; 1820:1915-25. [PMID: 22982178 DOI: 10.1016/j.bbagen.2012.08.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 12/19/2022]
Abstract
BACKGROUND Fucosylation is essential for various biological processes including tumorigenesis, inflammation, cell-cell recognition and host-pathogen interactions. Biosynthesis of fucosylated glycans is accomplished by fucosyltransferases. The enzymatic product of core α1,6-fucosyltransferase (FUT8) plays a major role in a plethora of pathological conditions, e.g. in prognosis of hepatocellular carcinoma and in colon cancer. Detailed knowledge of the binding mode of its substrates is required for the design of molecules that can modulate the activity of the enzyme. METHODS We provide a detailed description of binding interactions of human FUT8 with its natural donor substrate GDP-fucose and related compounds. GDP-Fuc was placed in FUT8 by structural analogy to the structure of protein-O-fucosyltransferase (cePOFUT) co-crystallized with GDP-Fuc. The epitope of the donor substrate bound to FUT8 was determined by STD NMR. The in silico model is further supported by experimental data from SPR binding assays. The complex was optimized by molecular dynamics simulations. RESULTS Guanine is specifically recognized by His363 and Asp453. Furthermore, the pyrophosphate is tightly bound via numerous hydrogen bonds and contributes affinity to a major part. Arg365 was found to bind both the β-phosphate and the fucose moiety at the same time. CONCLUSIONS Discovery of a novel structural analogy between cePOFUT and FUT8 allows the placement of the donor substrate GDP-Fuc. The positioning was confirmed by various experimental and computational techniques. GENERAL SIGNIFICANCE The model illustrates details of the molecular basis of substrate recognition for a human fucosyltransferase for the first time and, thus, provides a basis for structure-based design of inhibitors.
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Zhong X, Cooley C, Seth N, Juo ZS, Presman E, Resendes N, Kumar R, Allen M, Mosyak L, Stahl M, Somers W, Kriz R. Engineering novel Lec1 glycosylation mutants in CHO-DUKX cells: Molecular insights and effector modulation of N-acetylglucosaminyltransferase I. Biotechnol Bioeng 2012; 109:1723-34. [DOI: 10.1002/bit.24448] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 01/12/2012] [Accepted: 01/13/2012] [Indexed: 12/29/2022]
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48
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Selman MH, Derks RJ, Bondt A, Palmblad M, Schoenmaker B, Koeleman CA, van de Geijn FE, Dolhain RJ, Deelder AM, Wuhrer M. Fc specific IgG glycosylation profiling by robust nano-reverse phase HPLC-MS using a sheath-flow ESI sprayer interface. J Proteomics 2012; 75:1318-29. [DOI: 10.1016/j.jprot.2011.11.003] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 10/31/2011] [Accepted: 11/05/2011] [Indexed: 12/16/2022]
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49
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Fukuda T, Hashimoto H, Okayasu N, Kameyama A, Onogi H, Nakagawasai O, Nakazawa T, Kurosawa T, Hao Y, Isaji T, Tadano T, Narimatsu H, Taniguchi N, Gu J. Alpha1,6-fucosyltransferase-deficient mice exhibit multiple behavioral abnormalities associated with a schizophrenia-like phenotype: importance of the balance between the dopamine and serotonin systems. J Biol Chem 2011; 286:18434-43. [PMID: 21471224 DOI: 10.1074/jbc.m110.172536] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Previously, we reported that α1,6-fucosyltransferase (Fut8)-deficient (Fut8(-/-)) mice exhibit emphysema-like changes in the lung and severe growth retardation due to dysregulation of TGF-β1 and EGF receptors and to abnormal integrin activation, respectively. To study the role of α1,6-fucosylation in brain tissue where Fut8 is highly expressed, we examined Fut8(-/-) mice using a combination of neurological and behavioral tests. Fut8(-/-) mice exhibited multiple behavioral abnormalities consistent with a schizophrenia-like phenotype. Fut8(-/-) mice displayed increased locomotion compared with wild-type (Fut8(+/+)) and heterozygous (Fut8(+/-)) mice. In particular, Fut8(-/-) mice showed strenuous hopping behavior in a novel environment. Working memory performance was impaired in Fut8(-/-) mice as evidenced by the Y-maze tests. Furthermore, Fut8(-/-) mice showed prepulse inhibition (PPI) deficiency. Intriguingly, although there was no significant difference between Fut8(+/+) and Fut8(+/-) mice in the PPI test under normal conditions, Fut8(+/-) mice showed impaired PPI after exposure to a restraint stress. This result suggests that reduced expression of Fut8 is a plausible cause of schizophrenia and related disorders. The levels of serotonin metabolites were significantly decreased in both the striatum and nucleus accumbens of the Fut8(-/-) mice. Likewise, treatment with haloperidol, which is an antipsychotic drug that antagonizes dopaminergic and serotonergic receptors, significantly reduced hopping behaviors. The present study is the first to clearly demonstrate that α1,6-fucosylation plays an important role in the brain, and that it might be related to schizophrenia-like behaviors. Thus, the results of the present study provide new insights into the underlying mechanisms responsible for schizophrenia and related disorders.
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Affiliation(s)
- Tomohiko Fukuda
- Division of Regulatory Glycobiology, Tohoku Pharmaceutical University, 4-4-1 Komatsusima, Aobaku, Sendai, Miyagi 981-8558, Japan
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Narimatsu H. 8th HUPO World Congress: the Human Disease Glycomics/Proteomics Initiative (HGPI) Session 26 September 2009, Toronto, Canada. Proteomics 2010; 10:1899-902. [PMID: 20623475 DOI: 10.1002/pmic.201090035] [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: 11/07/2022]
Abstract
The Human Disease Glycomics/Proteomics Initiative (HGPI) Session at the HUPO World Congress was held in Toronto on 26 September 2009. In this report, we summarize the presentation of the HGPI workshop as follows: (i) The results of the past HGPI pilot studies (first and second) in which we analyzed N- and O-linked glycans using standard glycoproteins (i.e. first: N-linked glycan analysis of transferrin and IgG; second: O-linked glycan analysis of IgA). (ii) The recent progresses of the current HGPI third pilot study. The third analytical pilot study is in progress to perform the two tasks, which are glycan structural analysis and identification of proteins which carry specific carbohydrate antigen (Lewis X antigen) using cancer cells (i.e. L428, U937, and SK-N-SH), under the theme of "Glyco-Biomarker Discovery". Finally, recently advanced glycomic and glycoproteomic analyses were also reported.
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Affiliation(s)
- Hisashi Narimatsu
- Research Center for Medical Glycoscience, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
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