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Zheng X, Zhang X, Zhang Y, Chen C, Ji E. Identification of significant biomarkers for predicting the risk of bipolar disorder with arteriosclerosis based on integrative bioinformatics and machine learning. Front Psychiatry 2024; 15:1392437. [PMID: 39290304 PMCID: PMC11405317 DOI: 10.3389/fpsyt.2024.1392437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 08/19/2024] [Indexed: 09/19/2024] Open
Abstract
Introduction Increasing evidence has indicated a connection between bipolar disorder (BD) and arteriosclerosis (AS), yet the specific molecular mechanisms remain unclear. This study aims to investigate the hub genes and molecular pathways for BD with AS. Methods BD-related dataset GSE12649 were downloaded from the Gene Expression Omnibus database and differentially expressed genes (DEGs) and key module genes derived from Limma and weighted gene co-expression network analyses (WGCNA) were identified. AS-related genes were sourced from the DisGeNET database, and the overlapping genes between DEGs and AS-related genes were characterized as differentially expressed arteriosclerosis-related genes (DE-ASRGs). The functional enrichment analysis, protein-protein interaction (PPI) network and three machine learning algorithms were performed to explore the hub genes, which were validated with two external validation sets. Additionally, immune infiltration was performed in BD. Results Overall, 67 DE-ASRGs were found to be overlapping between the DEGs and AS-related genes. Functional enrichment analysis highlighted the cancer pathways between BD and AS. We identified seven candidate hub genes (CTSD, IRF3, NPEPPS, ST6GAL1, HIF1A, SOX9 and CX3CR1). Eventually, two hub genes (CX3CR1 and ST6GAL1) were identified as BD and AS co-biomarkers by using machine learning algorithms. Immune infiltration had revealed the disorder of immunocytes. Discussion This study identified the hub genes CX3CR1 and ST6GAL1 in BD and AS, providing new insights for further research on the bioinformatic mechanisms of BD with AS and contributing to the diagnosis and prevention of AS in psychiatric clinical practice.
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Affiliation(s)
- Xiabing Zheng
- Department of Bipolar Disorder, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Xiaozhe Zhang
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangzhou, China
| | - Yaqi Zhang
- Department of Geriatrics, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Cai Chen
- Department of Drug Dependence, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Erni Ji
- Department of Bipolar Disorder, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, Guangdong, China
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2
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Irons EE, Sajina GC, Lau JT. Sialic acid in the regulation of blood cell production, differentiation and turnover. Immunology 2024; 172:517-532. [PMID: 38503445 PMCID: PMC11223974 DOI: 10.1111/imm.13780] [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: 11/27/2023] [Accepted: 03/04/2024] [Indexed: 03/21/2024] Open
Abstract
Sialic acid is a unique sugar moiety that resides in the distal and most accessible position of the glycans on mammalian cell surface and extracellular glycoproteins and glycolipids. The potential for sialic acid to obscure underlying structures has long been postulated, but the means by which such structural changes directly affect biological processes continues to be elucidated. Here, we appraise the growing body of literature detailing the importance of sialic acid for the generation, differentiation, function and death of haematopoietic cells. We conclude that sialylation is a critical post-translational modification utilized in haematopoiesis to meet the dynamic needs of the organism by enforcing rapid changes in availability of lineage-specific cell types. Though long thought to be generated only cell-autonomously within the intracellular ER-Golgi secretory apparatus, emerging data also demonstrate previously unexpected diversity in the mechanisms of sialylation. Emphasis is afforded to the mechanism of extrinsic sialylation, whereby extracellular enzymes remodel cell surface and extracellular glycans, supported by charged sugar donor molecules from activated platelets.
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Affiliation(s)
| | | | - Joseph T.Y. Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14203 USA
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3
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Werner A, Hanić M, Zaitseva OO, Lauc G, Lux A, Nitschke L, Nimmerjahn F. IgG sialylation occurs in B cells pre antibody secretion. Front Immunol 2024; 15:1402000. [PMID: 38827747 PMCID: PMC11140079 DOI: 10.3389/fimmu.2024.1402000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 04/29/2024] [Indexed: 06/04/2024] Open
Abstract
Sialic acids as terminal sugar residues on cell surface or secreted proteins have many functional roles. In particular, the presence or absence of α2,6-linked sialic acid residues at the immunoglobulin G (IgG) Fc fragment can switch IgG effector functions from pro- to anti-inflammatory activity. IgG glycosylation is considered to take place inside the plasma blast/plasma cell while the molecule travels through the endoplasmic reticulum and Golgi apparatus before being secreted. However, more recent studies have suggested that IgG sialylation may occur predominantly post-antibody secretion. To what extent this extracellular IgG sialylation process contributes to overall IgG sialylation remains unclear, however. By generating bone marrow chimeric mice with a B cell-specific deletion of ST6Gal1, the key enzyme required for IgG sialylation, we now show that sialylation of the IgG Fc fragment exclusively occurs within B cells pre-IgG secretion. We further demonstrate that B cells expressing ST6Gal1 have a developmental advantage over B cells lacking ST6Gal1 expression and thus dominate the plasma cell pool and the resulting serum IgG population in mouse models in which both ST6Gal1-sufficient and -deficient B cells are present.
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Affiliation(s)
- Anja Werner
- Department of Biology, Division of Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Maja Hanić
- Genos Ltd, Glycoscience Research Laboratory, Zagreb, Croatia
| | | | - Gordan Lauc
- Genos Ltd, Glycoscience Research Laboratory, Zagreb, Croatia
| | - Anja Lux
- Department of Biology, Division of Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lars Nitschke
- Department of Biology, Division of Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Falk Nimmerjahn
- Department of Biology, Division of Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Medical Immunology Campus Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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4
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Sankaranarayanan NV, Sistla S, Nagarajan B, Chittum JE, Lau JTY, Desai UR. Computational studies on glycosaminoglycan recognition of sialyl transferases. Glycobiology 2023; 33:579-590. [PMID: 37171590 PMCID: PMC10426320 DOI: 10.1093/glycob/cwad040] [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: 03/29/2023] [Revised: 05/03/2023] [Accepted: 05/11/2023] [Indexed: 05/13/2023] Open
Abstract
Despite decades of research, glycosaminoglycans (GAGs) have not been known to interact with sialyl transferases (STs). Using our in-house combinatorial virtual library screening (CVLS) technology, we studied seven human isoforms, including ST6GAL1, ST6GAL2, ST3GAL1, ST3GAL3, ST3GAL4, ST3GAL5, and ST3GAL6, and predicted that GAGs, especially heparan sulfate (HS), are likely to differentially bind to STs. Exhaustive CVLS and molecular dynamics studies suggested that the common hexasaccharide sequence of HS preferentially recognized ST6GAL1 in a site overlapping the binding site of the donor substrate CMP-Sia. Interestingly, CVLS did not ascribe any special role for the rare 3-O-sulfate modification of HS in ST6GAL1 recognition. The computational predictions were tested using spectrofluorimetric studies, which confirmed preferential recognition of HS over other GAGs. A classic chain length-dependent binding of GAGs to ST6GAL1 was observed with polymeric HS displaying a tight affinity of ~65 nM. Biophysical studies also confirmed a direct competition between CMP-Sia and an HS oligosaccharide and CS polysaccharide for binding to ST6GAL1. Overall, our novel observation that GAGs bind to ST6GAL1 with high affinity and compete with the donor substrate is likely to be important because modulation of sialylation of glycan substrates on cells has considerable physiological/pathological consequences. Our work also brings forth the possibility of developing GAG-based chemical probes of ST6GAL1.
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Affiliation(s)
- Nehru Viji Sankaranarayanan
- Department of Medicinal Chemistry, Virginia Commonwealth University, Virginia 23298, Richmond, USA
- Drug Discovery and Development, Virginia Commonwealth University, Institute for Structural Biology, Virginia 23219, Richmond, USA
| | - Srinivas Sistla
- Department of Medicinal Chemistry, Virginia Commonwealth University, Virginia 23298, Richmond, USA
- Drug Discovery and Development, Virginia Commonwealth University, Institute for Structural Biology, Virginia 23219, Richmond, USA
| | - Balaji Nagarajan
- Department of Medicinal Chemistry, Virginia Commonwealth University, Virginia 23298, Richmond, USA
- Drug Discovery and Development, Virginia Commonwealth University, Institute for Structural Biology, Virginia 23219, Richmond, USA
| | - John E Chittum
- Department of Medicinal Chemistry, Virginia Commonwealth University, Virginia 23298, Richmond, USA
- Drug Discovery and Development, Virginia Commonwealth University, Institute for Structural Biology, Virginia 23219, Richmond, USA
| | - Joseph T Y Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo 14263, NY, USA
| | - Umesh R Desai
- Department of Medicinal Chemistry, Virginia Commonwealth University, Virginia 23298, Richmond, USA
- Drug Discovery and Development, Virginia Commonwealth University, Institute for Structural Biology, Virginia 23219, Richmond, USA
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5
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Trzos S, Link-Lenczowski P, Pocheć E. The role of N-glycosylation in B-cell biology and IgG activity. The aspects of autoimmunity and anti-inflammatory therapy. Front Immunol 2023; 14:1188838. [PMID: 37575234 PMCID: PMC10415207 DOI: 10.3389/fimmu.2023.1188838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/28/2023] [Indexed: 08/15/2023] Open
Abstract
The immune system is strictly regulated by glycosylation through the addition of highly diverse and dynamically changing sugar structures (glycans) to the majority of immune cell receptors. Although knowledge in the field of glycoimmunology is still limited, numerous studies point to the key role of glycosylation in maintaining homeostasis, but also in reflecting its disruption. Changes in oligosaccharide patterns can lead to impairment of both innate and acquired immune responses, with important implications in the pathogenesis of diseases, including autoimmunity. B cells appear to be unique within the immune system, since they exhibit both innate and adaptive immune activity. B cell surface is rich in glycosylated proteins and lectins which recognise glycosylated ligands on other cells. Glycans are important in the development, selection, and maturation of B cells. Changes in sialylation and fucosylation of cell surface proteins affect B cell signal transduction through BCRs, CD22 inhibitory coreceptor and Siglec-G. Plasmocytes, as the final stage of B cell differentiation, produce and secrete immunoglobulins (Igs), of which IgGs are the most abundant N-glycosylated proteins in human serum with the conserved N-glycosylation site at Asn297. N-oligosaccharide composition of the IgG Fc region affects its secretion, structure, half-life and effector functions (ADCC, CDC). IgG N-glycosylation undergoes little change during homeostasis, and may gradually be modified with age and during ongoing inflammatory processes. Hyperactivated B lymphocytes secrete autoreactive antibodies responsible for the development of autoimmunity. The altered profile of IgG N-glycans contributes to disease progression and remission and is sensitive to the application of therapeutic substances and immunosuppressive agents. In this review, we focus on the role of N-glycans in B-cell biology and IgG activity, the rearrangement of IgG oligosaccharides in aging, autoimmunity and immunosuppressive therapy.
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Affiliation(s)
- Sara Trzos
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland
- Doctoral School of Exact and Natural Sciences, Faculty of Biology, Jagiellonian University, Krakow, Poland
| | - Paweł Link-Lenczowski
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Ewa Pocheć
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland
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6
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Vicente MM, Leite-Gomes E, Pinho SS. Glycome dynamics in T and B cell development: basic immunological mechanisms and clinical applications. Trends Immunol 2023:S1471-4906(23)00112-6. [PMID: 37407365 PMCID: PMC10394430 DOI: 10.1016/j.it.2023.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 07/07/2023]
Abstract
Glycans cover the surfaces of all mammalian cells through a process called glycosylation. Nearly all proteins and receptors that integrate the intricate series of co-stimulatory/inhibitory pathways of the immune system are glycosylated. Growing evidence indicates that the development of the immune system at the origins of T and B cell development is tightly regulated by glycosylation. In this opinion, we hypothesize that the glycome composition of developing T and B cells is developmentally regulated. We discuss how glycans play fundamental roles in lymphocyte development and how glycans early define T and B cell functionality in multiple aspects of adaptive immunity. These advances can provide opportunities for the discovery of novel disease factors and more effective candidate treatments for various conditions.
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Affiliation(s)
- Manuel M Vicente
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; Graduate Program in Areas of Applied and Basic Biology (GABBA), School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
| | - Eduarda Leite-Gomes
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
| | - Salomé S Pinho
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal; Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal.
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7
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Liu Y, Chen H, Li H, Wang F, Jia J, Yan T. Circulating platelets supply ST6Gal-1 in patients with IgA nephropathy. Postgrad Med 2023; 135:161-168. [PMID: 36533382 DOI: 10.1080/00325481.2022.2159206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Our previous study showed ST6 β-galactoside α2,6-sialyltransferase 1 (ST6Gal-1) levels in plasma were associated with a slower progression of IgA nephropathy (IgAN). Platelets are the crucial regulator of cell surface glycosylation events in circulation by supplying glycosyltransferases. METHODS A total of 180 patients with IgAN were included in this study. ST6Gal-1 levels were analyzed before and after activation of platelets by flow cytometry. RESULTS We found that IgAN patients in the higher platelet counts group exhibited higher levels of ST6Gal-1 compared with the lower platelet counts group. There was a positive correlation between platelet counts and ST6Gal-1 levels in plasma. Patients with higher platelet counts had higher levels of IgA, serum C3, serum C4 and proteinuria, higher percentages of platelet crits, S1 and T1/2, lower levels of platelet distribution width and the mean platelet volume, as well as a lower percentage of platelet large cell ratio compared with those patients with lower platelet counts. No differences were found in terms of the eGFR decline and composite kidney endpoints between two groups. Furthermore, we investigated whether platelets were activated and released ST6Gal-1 in patients with IgAN. The expression of CD62P in platelets in patients with IgAN was higher than those of healthy controls. There were no obvious changes in ST6Gal-1 levels between the rest and the activated platelets within 1 to 2-hour, however, the difference in ST6Gal-1 levels became more pronounced after 4-hour of incubation. CONCLUSIONS In conclusion, human circulating platelets contain ST6Gal-1, which may be released by the activation of platelets in IgAN.
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Affiliation(s)
- Youxia Liu
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
| | - Hongshan Chen
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
| | - Hongfen Li
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
| | - Fanghao Wang
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
| | - Junya Jia
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
| | - Tiekun Yan
- Department of Nephrology, Tianjin Medical University General Hospital, Tianjin, PR China
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8
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GC S, Tuy K, Rickenbacker L, Jones R, Chakraborty A, Miller CR, Beierle EA, Hanumanthu VS, Tran AN, Mobley JA, Bellis SL, Hjelmeland AB. α2,6 Sialylation mediated by ST6GAL1 promotes glioblastoma growth. JCI Insight 2022; 7:e158799. [PMID: 36345944 PMCID: PMC9675560 DOI: 10.1172/jci.insight.158799] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 09/20/2022] [Indexed: 11/09/2022] Open
Abstract
One of the least-investigated areas of brain pathology research is glycosylation, which is a critical regulator of cell surface protein structure and function. β-Galactoside α2,6-sialyltransferase (ST6GAL1) is the primary enzyme that α2,6 sialylates N-glycosylated proteins destined for the plasma membrane or secretion, thereby modulating cell signaling and behavior. We demonstrate a potentially novel, protumorigenic role for α2,6 sialylation and ST6GAL1 in the deadly brain tumor glioblastoma (GBM). GBM cells with high α2,6 sialylation exhibited increased in vitro growth and self-renewal capacity and decreased mouse survival when orthotopically injected. α2,6 Sialylation was regulated by ST6GAL1 in GBM, and ST6GAL1 was elevated in brain tumor-initiating cells (BTICs). Knockdown of ST6GAL1 in BTICs decreased in vitro growth, self-renewal capacity, and tumorigenic potential. ST6GAL1 regulates levels of the known BTIC regulators PDGF Receptor β (PDGFRB), Activated Leukocyte Cell Adhesion Molecule, and Neuropilin, which were confirmed to bind to a lectin-recognizing α2,6 sialic acid. Loss of ST6GAL1 was confirmed to decrease PDGFRB α2,6 sialylation, total protein levels, and the induction of phosphorylation by PDGF-BB. Thus, ST6GAL1-mediated α2,6 sialylation of a select subset of cell surface receptors, including PDGFRB, increases GBM growth.
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Affiliation(s)
- Sajina GC
- Department of Cell, Developmental and Integrative Biology
| | - Kaysaw Tuy
- Department of Cell, Developmental and Integrative Biology
| | | | - Robert Jones
- Department of Cell, Developmental and Integrative Biology
| | | | | | | | | | | | - James A. Mobley
- Department of Anesthesiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
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9
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Aberrant Sialylation in Cancer: Therapeutic Opportunities. Cancers (Basel) 2022; 14:cancers14174248. [PMID: 36077781 PMCID: PMC9454432 DOI: 10.3390/cancers14174248] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/15/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
The surface of every eukaryotic cell is coated in a thick layer of glycans that acts as a key interface with the extracellular environment. Cancer cells have a different ‘glycan coat’ to healthy cells and aberrant glycosylation is a universal feature of cancer cells linked to all of the cancer hallmarks. This means glycans hold huge potential for the development of new diagnostic and therapeutic strategies. One key change in tumour glycosylation is increased sialylation, both on N-glycans and O-glycans, which leads to a dense forest of sialylated structures covering the cell surface. This hypersialylation has far-reaching consequences for cancer cells, and sialylated glycans are fundamental in tumour growth, metastasis, immune evasion and drug resistance. The development of strategies to inhibit aberrant sialylation in cancer represents an important opportunity to develop new therapeutics. Here, I summarise recent advances to target aberrant sialylation in cancer, including the development of sialyltransferase inhibitors and strategies to inhibit Siglecs and Selectins, and discuss opportunities for the future.
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10
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Rusiniak ME, Punch PR, Hait NC, Maiti A, Burns RT, Chapla D, Moremen KW, Zhao P, Wells L, Hoffmeister K, Lau JTY. Extracellular ST6GAL1 regulates monocyte-macrophage development and survival. Glycobiology 2022; 32:701-711. [PMID: 35661210 PMCID: PMC9280526 DOI: 10.1093/glycob/cwac032] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 05/02/2022] [Accepted: 05/12/2022] [Indexed: 11/14/2022] Open
Abstract
Interaction of immune cells with the systemic environment is necessary for the coordinated development and execution of immune responses. Monocyte-macrophage lineage cells reside at the junction of innate and adaptive immunity. Previously we reported that the sialyltransferase ST6GAL1 in the extracellular milieu modulates B cell development and IgG production, granulocyte production, and attenuates acute airway inflammation to bacterial challenge in mouse models. Here, we report that extracellular ST6GAL1 also elicits profound responses in monocyte-macrophage lineage cells. We show that recombinant ST6GAL1 adheres to subsets of thioglycolate-elicited inflammatory cells in the mouse peritoneum and to cultured human monocyte THP-1 cells. Exposure of the inflammatory cells to recombinant ST6GAL1 elicited wholesale changes in the gene expression profile of primary mouse myeloid cells; most notable was the striking up-regulation of monocyte-macrophage and monocyte-derived dendritic cell development pathway signature genes and transcription factors PU.1, NFκB and their target genes, driving increased monocyte-macrophage population and survival ex vivo. In the cultured human monocyte cells, the essential cell surface receptor of the monocyte-macrophage lineage, the M-CSF receptor (M-CSF-R, Csfr1) was a target of extracellular ST6GAL1 catalytic activity. Extracellular ST6GAL1 activated the M-CSF-R and initiated intracellular signaling events, namely, the nuclear translocation of NFκB subunit p65, and phosphorylation of ERK 1/2 and AKT. The findings implicate extracellular ST6GAL1 in monocyte development by a mechanism initiated at the cell surface and support an emerging paradigm of an extracellular glycan-modifying enzyme as a central regulator coordinating immune hematopoietic cell development and function.
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Affiliation(s)
- Michael E Rusiniak
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Patrick R Punch
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
- Department of Oral Biology, University at Buffalo, Buffalo, NY 14215, United States
| | - Nitai C Hait
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Aparna Maiti
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Robert T Burns
- Translational Glycomics Center, Blood Research Institute, 8727 W. Watertown Plank Rd, Milwaukee, WI 53226, United States
| | - Digantkumar Chapla
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, United States
| | - Kelley W Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, United States
| | - Peng Zhao
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, United States
| | - Lance Wells
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, United States
| | - Karin Hoffmeister
- Translational Glycomics Center, Blood Research Institute, 8727 W. Watertown Plank Rd, Milwaukee, WI 53226, United States
| | - Joseph T Y Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
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11
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Irons EE, Cortes Gomez E, Andersen VL, Lau JTY. Bacterial colonization and TH17 immunity are shaped by intestinal sialylation in neonatal mice. Glycobiology 2022; 32:414-428. [PMID: 35157771 PMCID: PMC9022908 DOI: 10.1093/glycob/cwac005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 01/10/2022] [Accepted: 01/30/2022] [Indexed: 11/14/2022] Open
Abstract
Interactions between the neonate host and its gut microbiome are central to the development of a healthy immune system. However, the mechanisms by which animals alter early colonization of microbiota for their benefit remain unclear. Here, we investigated the role of early-life expression of the α2,6-sialyltransferase ST6GAL1 in microbiome phylogeny and mucosal immunity. Fecal, upper respiratory, and oral microbiomes of pups expressing or lacking St6gal1 were analyzed by 16S rRNA sequencing. At weaning, the fecal microbiome of St6gal1-KO mice had reduced Clostridiodes, Coprobacillus, and Adlercreutzia, but increased Helicobacter and Bilophila. Pooled fecal microbiomes from syngeneic donors were transferred to antibiotic-treated wild-type mice, before analysis of recipient mucosal immune responses by flow cytometry, RT-qPCR, microscopy, and ELISA. Transfer of St6gal1-KO microbiome induced a mucosal Th17 response, with expression of T-bet and IL-17, and IL-22-dependent gut lengthening. Early life intestinal sialylation was characterized by RT-qPCR, immunoblot, microscopy, and sialyltransferase enzyme assays in genetic mouse models at rest or with glucocorticoid receptor modulators. St6gal1 expression was greatest in the duodenum, where it was mediated by the P1 promoter and efficiently inhibited by dexamethasone. Our data show that the inability to produce α2,6-sialyl ligands contributes to microbiome-dependent Th17 inflammation, highlighting a pathway by which the intestinal glycosylation regulates mucosal immunity.
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Affiliation(s)
- Eric E Irons
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Eduardo Cortes Gomez
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Valerie L Andersen
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Joseph T Y Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
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12
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Sun Y, Li X, Wang T, Li W. Core Fucosylation Regulates the Function of Pre-BCR, BCR and IgG in Humoral Immunity. Front Immunol 2022; 13:844427. [PMID: 35401499 PMCID: PMC8990897 DOI: 10.3389/fimmu.2022.844427] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/25/2022] [Indexed: 11/20/2022] Open
Abstract
Most of the membrane molecules involved in immune response are glycosylated. N-glycans linked to asparagine (Asn) of immune molecules contribute to the protein conformation, surface expression, stability, and antigenicity. Core fucosylation catalyzed by core fucosyltransferase (FUT8) is the most common post-translational modification. Core fucosylation is essential for evoking a proper immune response, which this review aims to communicate. First, FUT8 deficiency suppressed the interaction between μHC and λ5 during pre-BCR assembly is given. Second, we described the effects of core fucosylation in B cell signal transduction via BCR. Third, we investigated the role of core fucosylation in the interaction between helper T (TH) cells and B cells. Finally, we showed the role of FUT8 on the biological function of IgG. In this review, we discussed recent insights into the sites where core fucosylation is critical for humoral immune responses.
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Affiliation(s)
- Yuhan Sun
- College of Basic Medical Science, Dalian Medical University, Dalian, China
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Pharmaceutical University, Sendai, Japan
| | - Xueying Li
- Research Institute for Microbial Diseases and World Premier International Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Tiantong Wang
- College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Wenzhe Li
- College of Basic Medical Science, Dalian Medical University, Dalian, China
- *Correspondence: Wenzhe Li,
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13
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Hait NC, Maiti A, Wu R, Andersen VL, Hsu CC, Wu Y, Chapla DG, Takabe K, Rusiniak ME, Bshara W, Zhang J, Moremen KW, Lau JTY. Extracellular sialyltransferase st6gal1 in breast tumor cell growth and invasiveness. Cancer Gene Ther 2022; 29:1662-1675. [PMID: 35676533 PMCID: PMC9663294 DOI: 10.1038/s41417-022-00485-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/09/2022] [Accepted: 05/20/2022] [Indexed: 02/04/2023]
Abstract
The sialyltransferase ST6GAL1 that adds α2-6 linked sialic acids to N-glycans of cell surface and secreted glycoproteins is prominently associated with many human cancers. Tumor-native ST6GAL1 promotes tumor cell behaviors such as invasion and resistance to cell stress and chemo- and radio-treatments. Canonically, ST6GAL1 resides in the intracellular secretory apparatus and glycosylates nascent glycoproteins in biosynthetic transit. However, ST6GAL1 is also released into the extracellular milieu and extracellularly remodels cell surface and secreted glycans. The impact of this non-canonical extrinsic mechanism of ST6GAL1 on tumor cell pathobiology is not known. We hypothesize that ST6GAL1 action is the combined effect of natively expressed sialyltransferase acting cell-autonomously within the ER-Golgi complex and sialyltransferase from extracellular origins acting extrinsically to remodel cell-surface glycans. We found that shRNA knockdown of intrinsic ST6GAL1 expression resulted in decreased ST6GAL1 cargo in the exosome-like vesicles as well as decreased breast tumor cell growth and invasive behavior in 3D in vitro cultures. Extracellular ST6GAL1, present in cancer exosomes or the freely soluble recombinant sialyltransferase, compensates for insufficient intrinsic ST6GAL1 by boosting cancer cell proliferation and increasing invasiveness. Moreover, we present evidence supporting the existence novel but yet uncharacterized cofactors in the exosome-like particles that potently amplify extrinsic ST6GAL1 action, highlighting a previously unknown mechanism linking this enzyme and cancer pathobiology. Our data indicate that extracellular ST6GAL1 from remote sources can compensate for cellular ST6GAL1-mediated aggressive tumor cell proliferation and invasive behavior and has great clinical potential for extracellular ST6GAL1 as these molecules are in the extracellular space should be easily accessible targets.
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Affiliation(s)
- Nitai C. Hait
- grid.240614.50000 0001 2181 8635Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA ,grid.240614.50000 0001 2181 8635Department of Molecular & Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Aparna Maiti
- grid.240614.50000 0001 2181 8635Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA ,grid.240614.50000 0001 2181 8635Department of Molecular & Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Rongrong Wu
- grid.240614.50000 0001 2181 8635Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Valerie L. Andersen
- grid.240614.50000 0001 2181 8635Department of Molecular & Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Chang-Chieh Hsu
- grid.273335.30000 0004 1936 9887Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260 USA
| | - Yun Wu
- grid.273335.30000 0004 1936 9887Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260 USA
| | - Digantkumar G. Chapla
- grid.213876.90000 0004 1936 738XComplex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 USA ,grid.213876.90000 0004 1936 738XDepartment of Biochemistry and Molecular Biology, University of Georgia, 315 Riverbend Road, Athens, GA 30602 USA
| | - Kazuaki Takabe
- grid.240614.50000 0001 2181 8635Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Michael E. Rusiniak
- grid.240614.50000 0001 2181 8635Department of Molecular & Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
| | - Wiam Bshara
- grid.240614.50000 0001 2181 8635Department of Pathology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263 USA
| | - Jianmin Zhang
- grid.240614.50000 0001 2181 8635Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14203 USA
| | - Kelley W. Moremen
- grid.213876.90000 0004 1936 738XComplex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 USA ,grid.213876.90000 0004 1936 738XDepartment of Biochemistry and Molecular Biology, University of Georgia, 315 Riverbend Road, Athens, GA 30602 USA
| | - Joseph T. Y. Lau
- grid.240614.50000 0001 2181 8635Department of Molecular & Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, NY 14263 USA
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14
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Krick S, Helton ES, Easter M, Bollenbecker S, Denson R, Zaharias R, Cochran P, Vang S, Harris E, Wells JM, Barnes JW. ST6GAL1 and α2-6 Sialylation Regulates IL-6 Expression and Secretion in Chronic Obstructive Pulmonary Disease. Front Immunol 2021; 12:693149. [PMID: 34290711 PMCID: PMC8287524 DOI: 10.3389/fimmu.2021.693149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/21/2021] [Indexed: 01/23/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a systemic disease strongly associated with cigarette smoking, airway inflammation, and acute disease exacerbations. Changes in terminal sialylation and fucosylation of asparagine (N)-linked glycans have been documented in COPD, but the role that glycosyltransferases may play in the regulation of N-linked glycans in COPD has not been fully elucidated. Recent studies suggest that modulation of ST6GAL1 (ST6 beta-galactoside alpha-2,6-sialyltransferase-1), which catalyzes terminal α2-6 sialylation of cellular proteins, may regulate inflammation and contribute to COPD phenotype(s). Interestingly, it has been previously demonstrated that ST6GAL1, a Golgi resident protein, can be proteolytically processed by BACE1 (beta-site amyloid precursor protein cleaving enzyme-1) to a circulating form that retains activity. In this study, we showed that loss of ST6GAL1 expression increased interleukin (IL)-6 expression and secretion in human bronchial epithelial cells (HBECs). Furthermore, exposure to cigarette smoke medium/extract (CSE) or BACE1 inhibition resulted in decreased ST6GAL1 secretion, reduced α2-6 sialylation, and increased IL-6 production in HBECs. Analysis of plasma ST6GAL1 levels in a small COPD patient cohort demonstrated an inverse association with prospective acute exacerbations of COPD (AECOPD), while IL-6 was positively associated. Altogether, these results suggest that reduced ST6GAL1 and α2-6 sialylation augments IL-6 expression/secretion in HBECs and is associated with poor clinical outcomes in COPD.
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Affiliation(s)
- Stefanie Krick
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - E. Scott Helton
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Molly Easter
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Seth Bollenbecker
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Rebecca Denson
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Rennan Zaharias
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Phillip Cochran
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Shia Vang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Elex Harris
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - James M. Wells
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
- UAB Lung Health Center, Birmingham, AL, United States
- Birmingham VA Medical Center, Birmingham, AL, United States
| | - Jarrod W. Barnes
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, United States
- Gregory Fleming James Cystic Fibrosis Research Center, The University of Alabama at Birmingham, Birmingham, AL, United States
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15
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Bordron A, Morel M, Bagacean C, Dueymes M, Pochard P, Harduin-Lepers A, Jamin C, Pers JO. Hyposialylation Must Be Considered to Develop Future Therapies in Autoimmune Diseases. Int J Mol Sci 2021; 22:ijms22073402. [PMID: 33810246 PMCID: PMC8036829 DOI: 10.3390/ijms22073402] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
Autoimmune disease development depends on multiple factors, including genetic and environmental. Abnormalities such as sialylation levels and/or quality have been recently highlighted. The adjunction of sialic acid at the terminal end of glycoproteins and glycolipids is essential for distinguishing between self and non-self-antigens and the control of pro- or anti-inflammatory immune reactions. In autoimmunity, hyposialylation is responsible for chronic inflammation, the anarchic activation of the immune system and organ lesions. A detailed characterization of this mechanism is a key element for improving the understanding of these diseases and the development of innovative therapies. This review focuses on the impact of sialylation in autoimmunity in order to determine future treatments based on the regulation of hyposialylation.
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Affiliation(s)
- Anne Bordron
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
- Correspondence:
| | - Marie Morel
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
| | - Cristina Bagacean
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
- CHU de Brest, Laboratory of Immunolgy, 29200 Brest, France;
| | - Maryvonne Dueymes
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
- CHU de Brest, Laboratory of Immunolgy, 29200 Brest, France;
| | - Pierre Pochard
- CHU de Brest, Laboratory of Immunolgy, 29200 Brest, France;
| | - Anne Harduin-Lepers
- Univ. Lille, CNRS UMR 8576—UGSF—Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France;
| | - Christophe Jamin
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
- CHU de Brest, Laboratory of Immunolgy, 29200 Brest, France;
| | - Jacques-Olivier Pers
- Univ Brest, Inserm, LBAI, UMR1227 Brest, France; (M.M.); (C.B.); (M.D.); (C.J.); (J.-O.P.)
- CHU de Brest, Laboratory of Immunolgy, 29200 Brest, France;
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16
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Zhan T, Wang B, Fu J, Shao Y, Ye L, Shi H, Zheng L. Artesunate inhibits Sjögren's syndrome-like autoimmune responses and BAFF-induced B cell hyperactivation via TRAF6-mediated NF-κB signaling. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 80:153381. [PMID: 33086170 DOI: 10.1016/j.phymed.2020.153381] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Hyperactivation of B cells by activators has been demonstrated to play a central role in the pathogenesis of Sjögren's syndrome (SS). In this study, we found that artesunate (ART) can attenuate BAFF-induced B cell hyperactivation and SS-like symptoms in NOD/Ltj mice. PURPOSE To determine the efficacy of ART in attenuating SS-like symptoms in vivo and explore the underlying mechanism in vitro. STUDY DESIGN ART was intragastrically injected into SS-like NOD/Ltj mice. The cytokine hsBAFF was used to activate Raji and Daudi B cells to mimic B cell hyperactivation in vitro. METHODS The efficacy of ART in inhibiting SS progression was studied in NOD/Ltj mice. Salivary flow rate, the number of lymphocytic infiltration foci, the level of autoantibodies and the extent of B cell infiltration were measured in the indicated groups. CCK-8 assays, flow cytometry-based EdU staining and Annexin V/PI staining were also used to detect the effect of ART on the survival and proliferation mechanism in BAFF-induced Raji and Daudi cells. Further studies determined that TRAF6 degradation is a potential mechanism by which ART determines B cell fate. RESULTS Treatment with ART inhibited lymphocytic foci formation, B cell infiltration and autoantibody secretion in SS-like NOD/Ltj mice. In vitro assay results indicated that ART effectively inhibited BAFF-induced viability, survival and proliferation of neoplastic B cells. Mechanistically, ART targeted BAFF-activated NFκB by regulating the proteasome-mediated degradation of TRAF6 in Raji and Daudi cells. CONCLUSION ART ameliorated murine SS-like symptoms and regulated TRAF6-NFκB signaling, thus determining survival and proliferation of B cells.
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Affiliation(s)
- Tianle Zhan
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Baoli Wang
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jiayao Fu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yanxiong Shao
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Lei Ye
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Huan Shi
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
| | - Lingyan Zheng
- Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center of Oral Disease, Shanghai, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.
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17
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Buffone A, Weaver VM. Don't sugarcoat it: How glycocalyx composition influences cancer progression. J Cell Biol 2020; 219:133536. [PMID: 31874115 PMCID: PMC7039198 DOI: 10.1083/jcb.201910070] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/19/2019] [Accepted: 12/03/2019] [Indexed: 12/17/2022] Open
Abstract
Buffone and Weaver discuss how the structure of the backbones and glycans of the tumor glycocalyx governs cell–matrix interactions and directs cancer progression. Mechanical interactions between tumors and the extracellular matrix (ECM) of the surrounding tissues have profound effects on a wide variety of cellular functions. An underappreciated mediator of tumor–ECM interactions is the glycocalyx, the sugar-decorated proteins and lipids that act as a buffer between the tumor and the ECM, which in turn mediates all cell-tissue mechanics. Importantly, tumors have an increase in the density of the glycocalyx, which in turn increases the tension of the cell membrane, alters tissue mechanics, and drives a more cancerous phenotype. In this review, we describe the basic components of the glycocalyx and the glycan moieties implicated in cancer. Next, we examine the important role the glycocalyx plays in driving tension-mediated cancer cell signaling through a self-enforcing feedback loop that expands the glycocalyx and furthers cancer progression. Finally, we discuss current tools used to edit the composition of the glycocalyx and the future challenges in leveraging these tools into a novel tractable approach to treat cancer.
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Affiliation(s)
- Alexander Buffone
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA.,Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Valerie M Weaver
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA.,Departments of Radiation Oncology and Bioengineering and Therapeutic Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, and Helen Diller Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
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18
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Mortales CL, Lee SU, Demetriou M. N-Glycan Branching Is Required for Development of Mature B Cells. THE JOURNAL OF IMMUNOLOGY 2020; 205:630-636. [PMID: 32591389 DOI: 10.4049/jimmunol.2000101] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/29/2020] [Indexed: 12/14/2022]
Abstract
Galectins have been implicated in inhibiting BCR signaling in mature B cells but promoting pre-BCR signaling during early development. Galectins bind to branched N-glycans attached to cell surface glycoproteins to control the distribution, clustering, endocytosis, and signaling of surface glycoproteins. During T cell development, N-glycan branching is required for positive selection of thymocytes, inhibiting both death by neglect and negative selection via enhanced surface retention of the CD4/CD8 coreceptors and limiting TCR clustering/signaling, respectively. The role of N-glycan branching in B cell development is unknown. In this study, we report that N-glycan branching is absolutely required for development of mature B cells in mice. Elimination of branched N-glycans in developing B cells via targeted deletion of N-acetylglucosaminyl transferase I (Mgat1) markedly reduced cellularity in the bone marrow and/or spleen and inhibited maturation of pre-, immature, and transitional stage 2 B cells. Branching deficiency markedly reduced surface expression of the pre-BCR/BCR coreceptor CD19 and promoted spontaneous death of pre-B cells and immature B cells in vitro. Death was rescued by low-dose pre-BCR/BCR stimulation but exacerbated by high-dose pre-BCR/BCR stimulation as well as antiapoptotic BclxL overexpression in pre-B cells. Branching deficiency also enhanced Nur77 induction, a marker of negative selection. Together, these data suggest that, as in T cells, N-glycan branching promotes positive selection of B cells by augmenting pre-BCR/BCR signaling via CD19 surface retention, whereas limiting negative selection from excessive BCR engagement.
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Affiliation(s)
- Christie-Lynn Mortales
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA 92697; and
| | - Sung-Uk Lee
- Department of Neurology, University of California, Irvine, Irvine, CA 92697
| | - Michael Demetriou
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA 92697; and .,Department of Neurology, University of California, Irvine, Irvine, CA 92697
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19
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Irons EE, Punch PR, Lau JTY. Blood-Borne ST6GAL1 Regulates Immunoglobulin Production in B Cells. Front Immunol 2020; 11:617. [PMID: 32391003 PMCID: PMC7190976 DOI: 10.3389/fimmu.2020.00617] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/18/2020] [Indexed: 12/14/2022] Open
Abstract
Humoral immunity is an effective but metabolically expensive defense mechanism. It is unclear whether systemic cues exist to communicate the dynamic need for antigen presentation and immunoglobulin production. Here, we report a novel role for the liver-produced, acute phase reactant ST6GAL1 in IgG production. B cell expression of ST6GAL1, a sialyltransferase mediating the attachment of α2,6-linked sialic acids on N-glycans, is classically implicated in the dysregulated B cell development and immunoglobulin levels of St6gal1-deficient mice. However, the blood-borne pool of ST6GAL1, upregulated during systemic inflammation, can also extrinsically modify leukocyte cell surfaces. We show that B cell independent, extracellular ST6GAL1 enhances B cell IgG production and increases blood IgG titers. B cells of mice lacking the hepatocyte specific St6gal1 promoter have reduced sialylation of cell surface CD22 and CD45 and produce less IgG upon stimulation. Sialylation of B cells by extracellular ST6GAL1 boosts expression of IgM, IgD, and CD86, proliferation, and IgG production in vitro. In vivo, elevation of blood ST6GAL1 enhances B cell development and systemic IgG in a CD22-dependent manner. Our data point to a function of an extracellular glycosyltransferase in promoting humoral immunity. Manipulation of systemic ST6GAL1 may represent an effective therapeutic approach for humoral insufficiency.
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Affiliation(s)
- Eric E Irons
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, NY, United States
| | - Patrick R Punch
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, NY, United States
| | - Joseph T Y Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, NY, United States
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20
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Zhou Y, Zhang Y, Han J, Yang M, Zhu J, Jin T. Transitional B cells involved in autoimmunity and their impact on neuroimmunological diseases. J Transl Med 2020; 18:131. [PMID: 32183811 PMCID: PMC7079408 DOI: 10.1186/s12967-020-02289-w] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 02/28/2020] [Indexed: 02/08/2023] Open
Abstract
Transitional B cells (TrB cells) represent a crucial link between immature B cells in the bone marrow and mature peripheral B cells. Although TrB cells represent one of the regulatory B cell subpopulations in healthy individuals, the frequency of CD24hiCD38hi TrB cells in circulation may be altered in individuals with autoimmune diseases, such as multiple sclerosis, neuromyelitisoptica spectrum disorders, systemic lupus erythematosus, Sjögren’s syndrome, rheumatoid arthritis, systemic sclerosis, and juvenile dermatomyositis. Although TrB cells play regulatory roles under inflammatory conditions, consequences of their functional impairment vary across autoimmune diseases. Since the origin, development, and function of TrB cells, especially in humans, remain unclear and controversial, this review aimed to discuss the characteristics of TrB cells at steady state and explore their role in various immune diseases, including autoimmune rheumatic diseases and neuroimmunological diseases.
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Affiliation(s)
- Yang Zhou
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Ying Zhang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Jinming Han
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Mengge Yang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Jie Zhu
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.,Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Tao Jin
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
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21
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Irons EE, Lee-Sundlov MM, Zhu Y, Neelamegham S, Hoffmeister KM, Lau JT. B cells suppress medullary granulopoiesis by an extracellular glycosylation-dependent mechanism. eLife 2019; 8:47328. [PMID: 31408003 PMCID: PMC6713473 DOI: 10.7554/elife.47328] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/10/2019] [Indexed: 12/18/2022] Open
Abstract
The immune response relies on the integration of cell-intrinsic processes with cell-extrinsic cues. During infection, B cells vacate the marrow during emergency granulopoiesis but return upon restoration of homeostasis. Here we report a novel glycosylation-mediated crosstalk between marrow B cells and hematopoietic progenitors. Human B cells secrete active ST6GAL1 sialyltransferase that remodels progenitor cell surface glycans to suppress granulopoiesis. In mouse models, ST6GAL1 from B cells alters the sialylation profile of bone marrow populations, and mature IgD+ B cells were enriched in sialylated bone marrow niches. In clinical multiple myeloma, ST6GAL1 abundance in the multiple myeloma cells negatively correlated with neutrophil abundance. These observations highlight not only the ability of medullary B cells to influence blood cell production, but also the disruption to normal granulopoiesis by excessive ST6GAL1 in malignancy.
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Affiliation(s)
- Eric E Irons
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, United States
| | | | - Yuqi Zhu
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, United States
| | - Sriram Neelamegham
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, United States
| | | | - Joseph Ty Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, United States
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Nasirikenari M, Lugade AA, Neelamegham S, Gao Z, Moremen KW, Bogner PN, Thanavala Y, Lau JTY. Recombinant Sialyltransferase Infusion Mitigates Infection-Driven Acute Lung Inflammation. Front Immunol 2019; 10:48. [PMID: 30778346 PMCID: PMC6369197 DOI: 10.3389/fimmu.2019.00048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 01/09/2019] [Indexed: 11/13/2022] Open
Abstract
Inappropriate inflammation exacerbates a vast array of chronic and acute conditions with severe health risks. In certain situations, such as acute sepsis, traditional therapies may be inadequate in preventing severe organ damage or death. We have previously shown cell surface glycan modification by the circulating sialyltransferase ST6Gal-1 regulates de novo inflammatory cell production via a novel extrinsic glycosylation pathway. Here, we show that therapeutic administration of recombinant, bioactive ST6Gal-1 (rST6G) mitigates acute inflammation in a murine model mimicking acute exacerbations experienced by patients with chronic obstructive pulmonary disease (COPD). In addition to suppressing proximal neutrophil recruitment at onset of infection-mediated inflammation, rST6G also muted local cytokine production. Histologically, exposure with NTHI, a bacterium associated with COPD exacerbations, in rST6G-treated animals revealed consistent and pronounced reduction of pulmonary inflammation, characterized by smaller inflammatory cuffs around bronchovascular bundles, and fewer inflammatory cells within alveolar walls, alveolar spaces, and on pleural surfaces. Taken together, the data advance the idea that manipulating circulatory ST6Gal-1 levels has potential in managing inflammatory conditions by leveraging the combined approaches of controlling new inflammatory cell production and dampening the inflammation mediator cascade.
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Affiliation(s)
- Mehrab Nasirikenari
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Amit A Lugade
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Sriram Neelamegham
- Department of Chemical and Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Zhongwei Gao
- The Complex Carbohydrate Research Center, University of Georgia, Athens, GA, United States
| | - Kelley W Moremen
- The Complex Carbohydrate Research Center, University of Georgia, Athens, GA, United States
| | - Paul N Bogner
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Yasmin Thanavala
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Joseph T Y Lau
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
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