1
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Nardini E, Rodriguez E, van Kooyk Y. The tissue glycome as regulator of immune activation and tolerance mediated by C-type lectins and Siglecs. Semin Immunol 2024; 76:101913. [PMID: 39602867 DOI: 10.1016/j.smim.2024.101913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 11/20/2024] [Accepted: 11/20/2024] [Indexed: 11/29/2024]
Abstract
The immune system is a complex network of highly specialized microenvironments, denominated niches, which arise from dynamic interactions between immune and parenchymal cells as well as acellular components such as structural elements and local molecular signals. A critical, yet underexplored, layer shaping these niches is the glycome, the complete repertoire of glycans and glycoconjugates produced by cells. The glycome is prevalent in the outer membrane of cells and their secreted components, and can be sensed by glycan binding receptors on immune cells. These receptors detect changes in glycosylation and consequently modulate immune cell activity, trafficking, and signalling, altering homeostasis. Tissues like the brain and the placenta are prone to accommodate tolerance, while the gut and the thymus are sensitive to inflammation. We provide here an overview of current literature that shows the impact of altered glycosylation of tissues on host immune cells and how interference in this process may lead to new diagnostics and immune therapeutics, aiming to restore the immune balance in autoimmunity and cancer.
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Affiliation(s)
- Eleonora Nardini
- Amsterdam UMC location Vrije Universiteit Amsterdam, Molecular Cell Biology and Immunology, De Boelelaan, Amsterdam 1117, The Netherlands; Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam, The Netherlands; Amsterdam institute for Infection and Immunity, Cancer Immunology, Amsterdam, The Netherlands
| | - Ernesto Rodriguez
- Amsterdam UMC location Vrije Universiteit Amsterdam, Molecular Cell Biology and Immunology, De Boelelaan, Amsterdam 1117, The Netherlands; Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam, The Netherlands; Amsterdam institute for Infection and Immunity, Cancer Immunology, Amsterdam, The Netherlands
| | - Yvette van Kooyk
- Amsterdam UMC location Vrije Universiteit Amsterdam, Molecular Cell Biology and Immunology, De Boelelaan, Amsterdam 1117, The Netherlands; Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam, The Netherlands; Amsterdam institute for Infection and Immunity, Cancer Immunology, Amsterdam, The Netherlands.
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2
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Mehta D, Sanhueza CA. Interglycosidic C5-C6 rotamer distributions of alkyl O-rutinosides. Carbohydr Res 2024; 544:109251. [PMID: 39208606 DOI: 10.1016/j.carres.2024.109251] [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: 05/14/2024] [Revised: 08/21/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
The conformational study of carbohydrates is critical to understand the molecular recognition mechanisms underlying their biological functions. Moreover, the systematic study of their conformational patterns can unlock useful tools to design optimized glycomimetics and drug candidates. Using nuclear magnetic resonance, we studied the interglycosidic rotamer equilibria of ester-protected and deprotected alkyl O-rutinosides (α-L-Rha(1,6)β-D-GlcOR). In the protected series, the equilibrium about the C5-C6 bond distributes among the three possible rotamers gg, gt, and tg, being gt the predominant conformer. In these series, the flexibility about C5-C6 shows a marked dependency on the aglycone's structure, where the increase on the aglycone's volume leads to a progressive increment on the tg contributions at the expense of gt, with gg remaining practically constant along the series. The removal of the protective groups results in rutinosides displaying an equilibrium equally distributed between gg and gt with no tg contributions regardless of the aglycone's structure.
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Affiliation(s)
- Dhwani Mehta
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439, USA
| | - Carlos A Sanhueza
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439, USA.
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3
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Li XJ, Xiao SJ, Xie YH, Chen J, Xu HR, Yin Y, Zhang R, Yang T, Zhou TY, Zhang SY, Hu P, Gao LM, Peng HP. Structural characterization and immune activity evaluation of a polysaccharide from Lyophyllum Decastes. Int J Biol Macromol 2024; 278:134628. [PMID: 39128736 DOI: 10.1016/j.ijbiomac.2024.134628] [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: 01/20/2024] [Revised: 06/27/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
An innovative acidic hydrolysate fingerprinting workflow was proposed for the characterization of Lyophyllum Decastes polysaccharide (LDP) by ultra performance liquid chromatography-mass spectrometry (UPLC-MS). The crude polysaccharides were firstly separated and purified by using DE-52 column and the BRT GPC purification system, respectively. The molecular weight and monosaccharide content of homogeneous polysaccharides were ascertained by utilizing HPGPC and ion chromatography separately. Secondly, the linkage of LDP was identified by methylation analysis and 1D/2D NMR spectra. The UPLC-MS/MS was used to scan and identify the acidic hydrolysate products of LDP using the PGC column. The oligosaccharides were collected by chromatography and identified by mass spectrometry. Thirdly, the expression of IL-1β, IL-6, iNOS, TNF-α and IFNAR-I was measured in order to assess the immunological activity of LDP. Besides, the targeted receptors identification of polysaccharides was performed by screening the expression of TLRs family protein. The results showed that oligosaccharide fragments with different molecular weights can be obtained by partial hydrolysis, which further verified that the structures of LDP polysaccharides was a 1-6-linked β-glucan. Moreover, the LDP polysaccharide can up-regulate the content of IL-1β, IL-6, iNOS, TNF-α and IFNAR-I and plays an important immunoregulation role through TLRs family.
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Affiliation(s)
- Xiao-Jun Li
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China.
| | - Shi-Jun Xiao
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China
| | - Yi Heng Xie
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Jiang Chen
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China
| | - Hai-Rong Xu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Yuan Yin
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China
| | - Rui Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Tong Yang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Tong-Yu Zhou
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Si-Yan Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, PR China; Jiangsu Key Laboratory of integrated traditional Chinese and Western Medicine for prevention and treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, PR China
| | - Pei Hu
- Jiangzhong Pharmaceutical Co., Ltd., No.1899 Meiling Road, Nanchang 330103, PR China
| | - Li-Ming Gao
- Kunshan Hospital of Traditional Chinese Medicine, Affiliated Hospital of Yangzhou University Department of Gastroenterology, PR China
| | - Hui-Ping Peng
- Kunshan Hospital of Traditional Chinese Medicine, Affiliated Hospital of Yangzhou University Department of Gastroenterology, PR China.
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4
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Almeida P, Fernandes Â, Alves I, Pinho SS. "Glycans in Trained Immunity: Educators of innate immune memory in homeostasis and disease". Carbohydr Res 2024; 544:109245. [PMID: 39208605 DOI: 10.1016/j.carres.2024.109245] [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: 06/21/2024] [Revised: 08/12/2024] [Accepted: 08/19/2024] [Indexed: 09/04/2024]
Abstract
Trained Immunity is defined as a biological process normally induced by exogenous or endogenous insults that triggers epigenetic and metabolic reprogramming events associated with long-term adaptation of innate immune cells. This trained phenotype confers enhanced responsiveness to subsequent triggers, resulting in an innate immune "memory" effect. Trained Immunity, in the past decade, has revealed important benefits for host defense and homeostasis, but can also induce potentially harmful outcomes associated with chronic inflammatory disorders or autoimmune diseases. Interestingly, evidence suggest that the "trainers" prompting trained immunity are frequently glycans structures. In fact, the exposure of different types of glycans at the surface of pathogens is a key driver of the training phenotype, leading to the reprogramming of innate immune cells through the recognition of those glycan-triggers by a variety of glycan-binding proteins (GBPs) expressed by the immune cells. β-glucan or mannose-enriched structures in Candida albicans are some of the examples that highlight the potential of glycans in trained immunity, both in homeostasis and in disease. In this review, we will discuss the relevance of glycans exposed by pathogens in establishing key immunological hubs with glycan-recognizing receptors expressed in immune cells, highlighting how this glycan-GBP network can impact trained immunity. Finally, we discuss the power of glycans and GBPs as potential targets in trained immunity, envisioning potential therapeutic applications.
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Affiliation(s)
- Pedro Almeida
- I3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal.
| | - Ângela Fernandes
- I3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal.
| | - Inês Alves
- I3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal.
| | - Salomé S Pinho
- I3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal; Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; ICBAS - School of Medicine and Biomedical Sciences, University of Porto, 4050-313, Porto, Portugal.
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5
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Gurav MJ, Manasa J, Sanji AS, Megalamani PH, Chachadi VB. Lectin-glycan interactions: a comprehensive cataloguing of cancer-associated glycans for biorecognition and bio-alteration: a review. Glycoconj J 2024; 41:301-322. [PMID: 39218819 DOI: 10.1007/s10719-024-10161-y] [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: 06/03/2024] [Revised: 07/13/2024] [Accepted: 07/22/2024] [Indexed: 09/04/2024]
Abstract
This comprehensive review meticulously compiles data on an array of lectins and their interactions with different cancer types through specific glycans. Crucially, it establishes the link between aberrant glycosylation and cancer types. This repository of lectin-defined glycan signatures, assumes paramount importance in the realm of cancer and its dynamic nature. Cancer, known for its remarkable heterogeneity and individualized behaviour, can be better understood through these glycan signatures. The current review discusses the important lectins and their carbohydrate specificities, especially recognizing glycans of cancer origin. The review also addresses the key aspects of differentially expressed glycans on normal and cancerous cell surfaces. Specific cancer types highlighted in this review include breast cancer, colon cancer, glioblastoma, cervical cancer, lung cancer, liver cancer, and leukaemia. The glycan profiles unveiled through this review hold the key to tailor-made treatment and precise diagnostics. It opens up avenues to explore the potential of targeting glycosyltransferases and glycosidases linked with cancer advancement and metastasis. Armed with knowledge about specific glycan expressions, researchers can design targeted therapies to modulate glycan profiles, potentially hampering the advance of this relentless disease.
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Affiliation(s)
- Maruti J Gurav
- Post Graduate Department of Studies in Biochemistry, Karnatak University Dharwad, Dharwad, Karnataka, India
| | - J Manasa
- Post Graduate Department of Studies in Biochemistry, Karnatak University Dharwad, Dharwad, Karnataka, India
| | - Ashwini S Sanji
- Post Graduate Department of Studies in Biochemistry, Karnatak University Dharwad, Dharwad, Karnataka, India
| | - Prasanna H Megalamani
- Post Graduate Department of Studies in Biochemistry, Karnatak University Dharwad, Dharwad, Karnataka, India
| | - Vishwanath B Chachadi
- Post Graduate Department of Studies in Biochemistry, Karnatak University Dharwad, Dharwad, Karnataka, India.
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6
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Gaifem J, Rodrigues CS, Petralia F, Alves I, Leite-Gomes E, Cavadas B, Dias AM, Moreira-Barbosa C, Revés J, Laird RM, Novokmet M, Štambuk J, Habazin S, Turhan B, Gümüş ZH, Ungaro R, Torres J, Lauc G, Colombel JF, Porter CK, Pinho SS. A unique serum IgG glycosylation signature predicts development of Crohn's disease and is associated with pathogenic antibodies to mannose glycan. Nat Immunol 2024; 25:1692-1703. [PMID: 39080486 PMCID: PMC11362009 DOI: 10.1038/s41590-024-01916-8] [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: 06/28/2023] [Accepted: 07/03/2024] [Indexed: 08/10/2024]
Abstract
Inflammatory bowel disease (IBD) is characterized by chronic inflammation in the gut. There is growing evidence in Crohn's disease (CD) of the existence of a preclinical period characterized by immunological changes preceding symptom onset that starts years before diagnosis. Gaining insight into this preclinical phase will allow disease prediction and prevention. Analysis of preclinical serum samples, up to 6 years before IBD diagnosis (from the PREDICTS cohort), revealed the identification of a unique glycosylation signature on circulating antibodies (IgGs) characterized by lower galactosylation levels of the IgG fragment crystallizable (Fc) domain that remained stable until disease diagnosis. This specific IgG2 Fc glycan trait correlated with increased levels of antimicrobial antibodies, specifically anti-Saccharomyces cerevisiae (ASCA), pinpointing a glycome-ASCA hub detected in serum that predates by years the development of CD. Mechanistically, we demonstrated that this agalactosylated glycoform of ASCA IgG, detected in the preclinical phase, elicits a proinflammatory immune pathway through the activation and reprogramming of innate immune cells, such as dendritic cells and natural killer cells, via an FcγR-dependent mechanism, triggering NF-κB and CARD9 signaling and leading to inflammasome activation. This proinflammatory role of ASCA was demonstrated to be dependent on mannose glycan recognition and galactosylation levels in the IgG Fc domain. The pathogenic properties of (anti-mannose) ASCA IgG were validated in vivo. Adoptive transfer of antibodies to mannan (ASCA) to recipient wild-type mice resulted in increased susceptibility to intestinal inflammation that was recovered in recipient FcγR-deficient mice. Here we identify a glycosylation signature in circulating IgGs that precedes CD onset and pinpoint a specific glycome-ASCA pathway as a central player in the initiation of inflammation many years before CD diagnosis. This pathogenic glyco-hub may constitute a promising new serum biomarker for CD prediction and a potential target for disease prevention.
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Affiliation(s)
- Joana Gaifem
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Cláudia S Rodrigues
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- ICBAS, School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal
| | - Francesca Petralia
- Department of Genetics and Genomic Sciences, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Inês Alves
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Eduarda Leite-Gomes
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- ICBAS, School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal
| | - Bruno Cavadas
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Ana M Dias
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | | | - Joana Revés
- Division of Gastroenterology, Hospital Beatriz Ângelo, Loures, Portugal
| | - Renee M Laird
- Operationally Relevant Infections Department, Naval Medical Research Command, Silver Spring, MD, USA
- Henry M. Jackson Foundation for Military Medicine, Inc., Bethesda, MD, USA
| | | | - Jerko Štambuk
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
| | | | - Berk Turhan
- Department of Genetics and Genomic Sciences, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Zeynep H Gümüş
- Department of Genetics and Genomic Sciences, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ryan Ungaro
- Henry D. Janowitz Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joana Torres
- Division of Gastroenterology, Hospital Beatriz Ângelo, Loures, Portugal
- Faculty of Medicine, University of Lisbon, Lisbon, Portugal
- Division of Gastroenterology, Hospital da Luz, Lisbon, Portugal
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
- University of Zagreb Faculty of Pharmacy and Biochemistry, Ante Kovačića, Zagreb, Croatia
| | - Jean-Frederic Colombel
- Department of Medicine, Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Chad K Porter
- Translational and Clinical Research Department, Naval Medical Research Command, Silver Spring, MD, USA
| | - Salomé S Pinho
- i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal.
- ICBAS, School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal.
- Faculty of Medicine, University of Porto, Porto, Portugal.
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7
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Crouch LI, Rodrigues CS, Bakshani CR, Tavares-Gomes L, Gaifem J, Pinho SS. The role of glycans in health and disease: Regulators of the interaction between gut microbiota and host immune system. Semin Immunol 2024; 73:101891. [PMID: 39388764 DOI: 10.1016/j.smim.2024.101891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 10/03/2024] [Accepted: 10/03/2024] [Indexed: 10/12/2024]
Abstract
The human gut microbiota is home to a diverse collection of microorganisms that has co-evolved with the host immune system in which host-microbiota interactions are essential to preserve health and homeostasis. Evidence suggests that the perturbation of this symbiotic host-microbiome relationship contributes to the onset of major diseases such as chronic inflammatory diseases including Inflammatory Bowel Disease. The host glycocalyx (repertoire of glycans/sugar-chains at the surface of gut mucosa) constitutes a major biological and physical interface between the intestinal mucosa and microorganisms, as well as with the host immune system. Glycans are an essential niche for microbiota colonization and thus an important modulator of host-microorganism interactions both in homeostasis and in disease. In this review, we discuss the role of gut mucosa glycome as an instrumental pathway that regulates host-microbiome interactions in homeostasis but also in health to inflammation transition. We also discuss the power of mucosa glycosylation remodelling as an attractive preventive and therapeutic strategy to preserve gut homeostasis.
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Affiliation(s)
- Lucy I Crouch
- Department of Microbes, Infection and Microbiomes, College of Medicine and Health, University of Birmingham, Birmingham B15 2TT, UK.
| | - Cláudia S Rodrigues
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal; ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal
| | - Cassie R Bakshani
- Department of Microbes, Infection and Microbiomes, College of Medicine and Health, University of Birmingham, Birmingham B15 2TT, UK
| | - Leticia Tavares-Gomes
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Joana Gaifem
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Salomé S Pinho
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal; ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal.
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8
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SureshKumar H, Appadurai R, Srivastava A. Glycans modulate lipid binding in Lili-Mip lipocalin protein: insights from molecular simulations and protein network analyses. Glycobiology 2024; 34:cwad094. [PMID: 38015986 DOI: 10.1093/glycob/cwad094] [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: 03/10/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 11/30/2023] Open
Abstract
The unique viviparous Pacific Beetle cockroaches provide nutrition to their embryo by secreting milk proteins Lili-Mip, a lipid-binding glycoprotein that crystallises in-vivo. The resolved in-vivo crystal structure of variably glycosylated Lili-Mip shows a classical Lipocalin fold with an eight-stranded antiparallel beta-barrel enclosing a fatty acid. The availability of physiologically unaltered glycoprotein structure makes Lili-Mip a very attractive model system to investigate the role of glycans on protein structure, dynamics, and function. Towards that end, we have employed all-atom molecular dynamics simulations on various glycosylated stages of a bound and free Lili-Mip protein and characterised the impact of glycans and the bound lipid on the dynamics of this glycoconjugate. Our work provides important molecular-level mechanistic insights into the role of glycans in the nutrient storage function of the Lili-Mip protein. Our analyses show that the glycans stabilise spatially proximal residues and regulate the low amplitude opening motions of the residues at the entrance of the binding pocket. Glycans also preserve the native orientation and conformational flexibility of the ligand. However, we find that either deglycosylation or glycosylation with high-mannose and paucimannose on the core glycans, which better mimic the natural insect glycosylation state, significantly affects the conformation and dynamics. A simple but effective distance- and correlation-based network analysis of the protein also reveals the key residues regulating the barrel's architecture and ligand binding characteristics in response to glycosylation.
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Affiliation(s)
- Harini SureshKumar
- Molecular Biophysics Unit, Indian Institute of Science, C. V. Raman Road, Bangalore, KA 560012, India
| | - Rajeswari Appadurai
- Molecular Biophysics Unit, Indian Institute of Science, C. V. Raman Road, Bangalore, KA 560012, India
| | - Anand Srivastava
- Molecular Biophysics Unit, Indian Institute of Science, C. V. Raman Road, Bangalore, KA 560012, India
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9
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Schmidt EN, Macauley MS. A thicker skin for better immune evasion. NATURE MATERIALS 2024; 23:312-313. [PMID: 38438619 DOI: 10.1038/s41563-024-01822-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Affiliation(s)
- Edward N Schmidt
- Deparment of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Matthew S Macauley
- Deparment of Chemistry, University of Alberta, Edmonton, Alberta, Canada.
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada.
- Neuroscience and Mental Health Institute, Edmonton, Alberta, Canada.
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10
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Widmalm G. Glycan Shape, Motions, and Interactions Explored by NMR Spectroscopy. JACS AU 2024; 4:20-39. [PMID: 38274261 PMCID: PMC10807006 DOI: 10.1021/jacsau.3c00639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024]
Abstract
Glycans in the form of oligosaccharides, polysaccharides, and glycoconjugates are ubiquitous in nature, and their structures range from linear assemblies to highly branched and decorated constructs. Solution state NMR spectroscopy facilitates elucidation of preferred conformations and shapes of the saccharides, motions, and dynamic aspects related to processes over time as well as the study of transient interactions with proteins. Identification of intermolecular networks at the atomic level of detail in recognition events by carbohydrate-binding proteins known as lectins, unraveling interactions with antibodies, and revealing substrate scope and action of glycosyl transferases employed for synthesis of oligo- and polysaccharides may efficiently be analyzed by NMR spectroscopy. By utilizing NMR active nuclei present in glycans and derivatives thereof, including isotopically enriched compounds, highly detailed information can be obtained by the experiments. Subsequent analysis may be aided by quantum chemical calculations of NMR parameters, machine learning-based methodologies and artificial intelligence. Interpretation of the results from NMR experiments can be complemented by extensive molecular dynamics simulations to obtain three-dimensional dynamic models, thereby clarifying molecular recognition processes involving the glycans.
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Affiliation(s)
- Göran Widmalm
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
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11
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Tolentino MJ, Tolentino AJ, Tolentino EM, Krishnan A, Genead MA. Sialic Acid Mimetic Microglial Sialic Acid-Binding Immunoglobulin-like Lectin Agonism: Potential to Restore Retinal Homeostasis and Regain Visual Function in Age-Related Macular Degeneration. Pharmaceuticals (Basel) 2023; 16:1735. [PMID: 38139861 PMCID: PMC10747662 DOI: 10.3390/ph16121735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/29/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
Age-related macular degeneration (AMD), a leading cause of visual loss and dysfunction worldwide, is a disease initiated by genetic polymorphisms that impair the negative regulation of complement. Proteomic investigation points to altered glycosylation and loss of Siglec-mediated glyco-immune checkpoint parainflammatory and inflammatory homeostasis as the main determinant for the vision impairing complications of macular degeneration. The effect of altered glycosylation on microglial maintained retinal para-inflammatory homeostasis and eventual recruitment and polarization of peripheral blood monocyte-derived macrophages (PBMDMs) into the retina can explain the phenotypic variability seen in this clinically heterogenous disease. Restoring glyco-immune checkpoint control with a sialic acid mimetic agonist targeting microglial/macrophage Siglecs to regain retinal para-inflammatory and inflammatory homeostasis is a promising therapeutic that could halt the progression of and improve visual function in all stages of macular degeneration.
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Affiliation(s)
- Michael J. Tolentino
- Department of Ophthalmology, University of Central Florida College of Medicine, Orlando, FL 32827, USA
- Department of Ophthalmology, Orlando College of Osteopathic Medicine, Orlando, FL 34787, USA
- Aviceda Therapeutics, Cambridge, MA 02142, USA; (A.K.); (M.A.G.)
| | - Andrew J. Tolentino
- Department of Biology, University of California Berkeley, Berkeley, CA 94720, USA;
| | | | - Anitha Krishnan
- Aviceda Therapeutics, Cambridge, MA 02142, USA; (A.K.); (M.A.G.)
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12
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Deore B, Kwok RW, Toregeldiyeva M, Vázquez JT, Marianski M, Sanhueza CA. Conformational Properties of Aryl S-Glucosides in Solution. J Org Chem 2023; 88:15569-15579. [PMID: 37933138 PMCID: PMC11078472 DOI: 10.1021/acs.joc.3c01156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The conformational study of saccharides and glycomimetics in solution is critical for a comprehensive understanding of their interactions with biological receptors and enabling the design of optimized glycomimetics. Here, we report a nuclear magnetic resonance (NMR) study centered on the conformational properties of the hydroxymethyl group and glycosidic bond of four series of aryl S-glucosides. We found that in acetyl-protected and free aryl S-β-glucosides, the rotational equilibrium around the C5-C6 bond (hydroxymethyl group) exhibits a linear dependence on the electronic properties of the aglycone, namely, as the aryl's substituent electron-withdrawing character increases, the dominance of the gg rotamer declines and the gt contribution rises. Likewise, the conformational equilibrium around the glycosidic C1-S bond also depends on the aglycone's electronic properties, where glucosides carrying electron-poor aglycones exhibit stiffer glycosidic bonds in comparison to their electron-rich counterparts. In the case of the α anomers, the aglycone's effect over the glycosidic bond conformation is like that observed on their β isomers; however, we observe no aglycone's influence over the hydroxymethyl group conformation in the α-glucosides.
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Affiliation(s)
- Bhavesh Deore
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
| | - Ryan W Kwok
- Department of Chemistry, Hunter College, The City University of New York, 695 Park Avenue, New York, New York 10065, United States
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Malika Toregeldiyeva
- The Bronx High School of Science, 75 W 205th Street, Bronx, New York 10468, United States
| | - Jesús T Vázquez
- Instituto Universitario de Bio-Orgánica "Antonio González", Departamento de Química Orgánica, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Mateusz Marianski
- Department of Chemistry, Hunter College, The City University of New York, 695 Park Avenue, New York, New York 10065, United States
- The Ph.D. Program in Chemistry, Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Carlos A Sanhueza
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
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13
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Hulbert SW, Desai P, Jewett MC, DeLisa MP, Williams AJ. Glycovaccinology: The design and engineering of carbohydrate-based vaccine components. Biotechnol Adv 2023; 68:108234. [PMID: 37558188 DOI: 10.1016/j.biotechadv.2023.108234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/12/2023] [Accepted: 08/05/2023] [Indexed: 08/11/2023]
Abstract
Vaccines remain one of the most important pillars in preventative medicine, providing protection against a wide array of diseases by inducing humoral and/or cellular immunity. Of the many possible candidate antigens for subunit vaccine development, carbohydrates are particularly appealing because of their ubiquitous presence on the surface of all living cells, viruses, and parasites as well as their known interactions with both innate and adaptive immune cells. Indeed, several licensed vaccines leverage bacterial cell-surface carbohydrates as antigens for inducing antigen-specific plasma cells secreting protective antibodies and the development of memory T and B cells. Carbohydrates have also garnered attention in other aspects of vaccine development, for example, as adjuvants that enhance the immune response by either activating innate immune responses or targeting specific immune cells. Additionally, carbohydrates can function as immunomodulators that dampen undesired humoral immune responses to entire protein antigens or specific, conserved regions on antigenic proteins. In this review, we highlight how the interplay between carbohydrates and the adaptive and innate arms of the immune response is guiding the development of glycans as vaccine components that act as antigens, adjuvants, and immunomodulators. We also discuss how advances in the field of synthetic glycobiology are enabling the design, engineering, and production of this new generation of carbohydrate-containing vaccine formulations with the potential to prevent infectious diseases, malignancies, and complex immune disorders.
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Affiliation(s)
- Sophia W Hulbert
- Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853, USA
| | - Primit Desai
- Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853, USA
| | - Michael C Jewett
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Matthew P DeLisa
- Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853, USA; Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; Cornell Institute of Biotechnology, Cornell University, Ithaca, NY 14853, USA.
| | - Asher J Williams
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
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14
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Hours CM, Gil S, Gressens P. Molecular and Cellular Insights: A Focus on Glycans and the HNK1 Epitope in Autism Spectrum Disorder. Int J Mol Sci 2023; 24:15139. [PMID: 37894820 PMCID: PMC10606426 DOI: 10.3390/ijms242015139] [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: 08/16/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Autism Spectrum Disorder (ASD) is a synaptic disorder with a GABA/glutamate imbalance in the perineuronal nets and structural abnormalities such as increased dendritic spines and decreased long distance connections. Specific pregnancy disorders significantly increase the risk for an ASD phenotype such as preeclampsia, preterm birth, hypoxia phenomena, and spontaneous miscarriages. They are associated with defects in the glycosylation-immune placental processes implicated in neurogenesis. Some glycans epitopes expressed in the placenta, and specifically in the extra-villous trophoblast also have predominant functions in dendritic process and synapse function. Among these, the most important are CD57 or HNK1, CD22, CD24, CD33 and CD45. They modulate the innate immune cells at the maternal-fetal interface and they promote foeto-maternal tolerance. There are many glycan-based pathways of immunosuppression. N-glycosylation pathway dysregulation has been found to be associated with autoimmune-like phenotypes and maternal-autoantibody-related (MAR) autism have been found to be associated with central, systemic and peripheric autoimmune processes. Essential molecular pathways associated with the glycan-epitopes expression have been found to be specifically dysregulated in ASD, notably the Slit/Robo, Wnt, and mTOR/RAGE signaling pathways. These modifications have important effects on major transcriptional pathways with important genetic expression consequences. These modifications lead to defects in neuronal progenitors and in the nervous system's implementation specifically, with further molecular defects in the GABA/glutamate system. Glycosylation placental processes are crucial effectors for proper maternofetal immunity and endocrine/paracrine pathways formation. Glycans/ galectins expression regulate immunity and neurulation processes with a direct link with gene expression. These need to be clearly elucidated in ASD pathophysiology.
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Affiliation(s)
- Camille M Hours
- INSERM 1141, NeuroDiderot, Neuroprotection of the Developing Brain, Université Paris Cité, 75019 Paris, France
- Service de Psychiatrie de l'Enfant et de l'Adolescent, APHP, Hôpital Robert Debré, 75019 Paris, France
| | - Sophie Gil
- INSERM 1144, Therapeutics in Neuropsychopharmacology, Université Paris Cité, 75019 Paris, France
| | - Pierre Gressens
- INSERM 1141, NeuroDiderot, Neuroprotection of the Developing Brain, Université Paris Cité, 75019 Paris, France
- Neurologie Pédiatrique, APHP, Hôpital Robert Debré, 75019 Paris, France
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15
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Ng S, Masarone S, Watson D, Barnes MR. The benefits and pitfalls of machine learning for biomarker discovery. Cell Tissue Res 2023; 394:17-31. [PMID: 37498390 PMCID: PMC10558383 DOI: 10.1007/s00441-023-03816-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/12/2023] [Indexed: 07/28/2023]
Abstract
Prospects for the discovery of robust and reproducible biomarkers have improved considerably with the development of sensitive omics platforms that can enable measurement of biological molecules at an unprecedented scale. With technical barriers to success lowering, the challenge is now moving into the analytical domain. Genome-wide discovery presents a problem of scale and multiple testing as standard statistical methods struggle to distinguish signal from noise in increasingly complex biological systems. Machine learning and AI methods are good at finding answers in large datasets, but they have a tendency to overfit solutions. It may be possible to find a local answer or mechanism in a specific patient sample or small group of samples, but this may not generalise to wider patient populations due to the high likelihood of false discovery. The rise of explainable AI offers to improve the opportunity for true discovery by providing explanations for predictions that can be explored mechanistically before proceeding to costly and time-consuming validation studies. This review aims to introduce some of the basic concepts of machine learning and AI for biomarker discovery with a focus on post hoc explanation of predictions. To illustrate this, we consider how explainable AI has already been used successfully, and we explore a case study that applies AI to biomarker discovery in rheumatoid arthritis, demonstrating the accessibility of tools for AI and machine learning. We use this to illustrate and discuss some of the potential challenges and solutions that may enable AI to critically interrogate disease and response mechanisms.
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Affiliation(s)
- Sandra Ng
- Centre for Translational Bioinformatics, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Sara Masarone
- Centre for Translational Bioinformatics, William Harvey Research Institute, Queen Mary University of London, London, UK
- Alan Turing Institute, London, UK
| | - David Watson
- Department of Informatics, King's College London, London, UK
| | - Michael R Barnes
- Centre for Translational Bioinformatics, William Harvey Research Institute, Queen Mary University of London, London, UK.
- Alan Turing Institute, London, UK.
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16
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Pinho SS, Alves I, Gaifem J, Rabinovich GA. Immune regulatory networks coordinated by glycans and glycan-binding proteins in autoimmunity and infection. Cell Mol Immunol 2023; 20:1101-1113. [PMID: 37582971 PMCID: PMC10541879 DOI: 10.1038/s41423-023-01074-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/26/2023] [Indexed: 08/17/2023] Open
Abstract
The immune system is coordinated by an intricate network of stimulatory and inhibitory circuits that regulate host responses against endogenous and exogenous insults. Disruption of these safeguard and homeostatic mechanisms can lead to unpredictable inflammatory and autoimmune responses, whereas deficiency of immune stimulatory pathways may orchestrate immunosuppressive programs that contribute to perpetuate chronic infections, but also influence cancer development and progression. Glycans have emerged as essential components of homeostatic circuits, acting as fine-tuners of immunological responses and potential molecular targets for manipulation of immune tolerance and activation in a wide range of pathologic settings. Cell surface glycans, present in cells, tissues and the extracellular matrix, have been proposed to serve as "self-associated molecular patterns" that store structurally relevant biological data. The responsibility of deciphering this information relies on different families of glycan-binding proteins (including galectins, siglecs and C-type lectins) which, upon recognition of specific carbohydrate structures, can recalibrate the magnitude, nature and fate of immune responses. This process is tightly regulated by the diversity of glycan structures and the establishment of multivalent interactions on cell surface receptors and the extracellular matrix. Here we review the spatiotemporal regulation of selected glycan-modifying processes including mannosylation, complex N-glycan branching, core 2 O-glycan elongation, LacNAc extension, as well as terminal sialylation and fucosylation. Moreover, we illustrate examples that highlight the contribution of these processes to the control of immune responses and their integration with canonical tolerogenic pathways. Finally, we discuss the power of glycans and glycan-binding proteins as a source of immunomodulatory signals that could be leveraged for the treatment of autoimmune inflammation and chronic infection.
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Affiliation(s)
- Salomé S Pinho
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal.
- ICBAS-School of Medicine and Biomedical Sciences, University of Porto, 4050-313, Porto, Portugal.
- Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal.
| | - Inês Alves
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal
| | - Joana Gaifem
- i3S - Institute for Research and Innovation in Health, University of Porto, 4200-135, Porto, Portugal
| | - Gabriel A Rabinovich
- Laboratorio de Glicomedicina, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), C1428, Ciudad de Buenos Aires, Argentina.
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428, Ciudad de Buenos Aires, Argentina.
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17
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Campar A, Alves I, Santos-Pereira B, Nogueira R, Pinto MM, Vasconcelos C, Pinho SS. Muscle glycome in idiopathic inflammatory myopathies: Impact in IL-6 production and disease prognosis. iScience 2023; 26:107172. [PMID: 37404372 PMCID: PMC10316658 DOI: 10.1016/j.isci.2023.107172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 04/23/2023] [Accepted: 06/14/2023] [Indexed: 07/06/2023] Open
Abstract
Idiopathic inflammatory myopathies (IIM) are a group of chronic autoimmune diseases mainly affecting proximal muscles. Absence of meaningful prognostic factors in IIM has hindered new therapies development. Glycans are essential molecules that regulate immunological tolerance and consequently the onset of autoreactive immune response. We showed that muscle biopsies from patients with IIM revealed a deficiency in the glycosylation pathway resulting in loss of branched N-glycans. At diagnosis, this glycosignature predicted disease relapse and treatment refractoriness. Peripheral CD4+ T cells from active-disease patients shown a deficiency in branched N-glycans, linked to increased IL-6 production. Glycan supplementation, restoring homeostatic glycosylation profile, led to a decrease in IL-6 levels. This study highlights the biological and clinical importance of glycosylation in IIM immunopathogenesis, providing a potential mechanism for IL-6 production. This pinpoints muscle glycome as promising biomarker for personalized follow-up and a potential target for new therapies in a patients' subgroup with an ominous evolution.
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Affiliation(s)
- Ana Campar
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Clinical Immunology Unit, Porto University Hospital Centre, Porto, Portugal
| | - Inês Alves
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
| | - Beatriz Santos-Pereira
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - Rafaela Nogueira
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Department of Chemistry, NOVA School of Science and Technology, Lisbon, Portugal
| | | | - Carlos Vasconcelos
- Clinical Immunology Unit, Porto University Hospital Centre, Porto, Portugal
| | - Salomé S. Pinho
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Faculty of Medicine, University of Porto, Porto, Portugal
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18
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Alves I, Santos-Pereira B, de la Cruz N, Campar A, Pinto V, Rodrigues PM, Araújo M, Santos S, Ramos-Soriano J, Vasconcelos C, Silva R, Afonso N, Mira F, Barrias CC, Alves NL, Rojo J, Santos L, Marinho A, Pinho SS. Host-derived mannose glycans trigger a pathogenic γδ T cell/IL-17a axis in autoimmunity. Sci Transl Med 2023; 15:eabo1930. [PMID: 36921032 DOI: 10.1126/scitranslmed.abo1930] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Autoimmune diseases are life-threatening disorders that cause increasing disability over time. Systemic lupus erythematosus (SLE) and other autoimmune diseases arise when immune stimuli override mechanisms of self-tolerance. Accumulating evidence has demonstrated that protein glycosylation is substantially altered in autoimmune disease development, but the mechanisms by which glycans trigger these autoreactive immune responses are still largely unclear. In this study, we found that presence of microbial-associated mannose structures at the surface of the kidney triggers the recognition of DC-SIGN-expressing γδ T cells, inducing a pathogenic interleukin-17a (IL-17a)-mediated autoimmune response. Mice lacking Mgat5, which have a higher abundance of mannose structures in the kidney, displayed increased γδ T cell infiltration into the kidney that was associated with spontaneous development of lupus in older mice. N-acetylglucosamine supplementation, which promoted biosynthesis of tolerogenic branched N-glycans in the kidney, was found to inhibit γδ T cell infiltration and control disease development. Together, this work reveals a mannose-γδ T cell-IL-17a axis in SLE immunopathogenesis and highlights glycometabolic reprogramming as a therapeutic strategy for autoimmune disease treatment.
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Affiliation(s)
- Inês Alves
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal.,Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Beatriz Santos-Pereira
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal.,Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Noelia de la Cruz
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, 41092 Sevilla, Spain
| | - Ana Campar
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal.,ICBAS-School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal.,Department of Clinical Immunology, Centro Hospitalar Universitário do Porto, 4099-001 Porto, Portugal
| | - Vanda Pinto
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Pedro M Rodrigues
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Marco Araújo
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Sofia Santos
- Nephrology Department, Centro Hospitalar e Universitário do Porto, 4099-001 Porto, Portugal
| | - Javier Ramos-Soriano
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, 41092 Sevilla, Spain
| | - Carlos Vasconcelos
- ICBAS-School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal.,Department of Clinical Immunology, Centro Hospitalar Universitário do Porto, 4099-001 Porto, Portugal
| | - Roberto Silva
- Department of Pathology, Hospital Universitário São João do Porto, 4200-319 Porto, Portugal
| | - Nuno Afonso
- Department of Nephrology, Centro Hospitalar Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Filipe Mira
- Department of Nephrology, Centro Hospitalar Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Cristina C Barrias
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Nuno L Alves
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Javier Rojo
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, 41092 Sevilla, Spain
| | - Lélita Santos
- Department of Internal Medicine, Centro Hospitalar Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - António Marinho
- ICBAS-School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal.,Department of Clinical Immunology, Centro Hospitalar Universitário do Porto, 4099-001 Porto, Portugal
| | - Salomé S Pinho
- i3s - Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal.,Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal.,ICBAS-School of Medicine and Biomedical Sciences, University of Porto, 4050-313 Porto, Portugal
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19
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The Blessed Union of Glycobiology and Immunology: A Marriage That Worked. MEDICINES (BASEL, SWITZERLAND) 2023; 10:medicines10020015. [PMID: 36827215 PMCID: PMC9967969 DOI: 10.3390/medicines10020015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/03/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023]
Abstract
In this article, we discuss the main aspects regarding the recognition of cell surface glycoconjugates and the immunomodulation of responses against the progression of certain pathologies, such as cancer and infectious diseases. In the first part, we talk about different aspects of glycoconjugates and delve deeper into the importance of N-glycans in cancer immunotherapy. Then, we describe two important lectin families that have been very well studied in the last 20 years. Examples include the sialic acid-binding immunoglobulin (Ig)-like lectins (siglecs), and galectins. Finally, we discuss a topic that needs to be better addressed in the field of glycoimmunology: the impact of oncofetal antigens on the cells of the immune system. New findings in this area are of great importance for advancement, especially in the field of oncology, since it is already known that cellular interactions mediated by carbohydrate-carbohydrate and/or carbohydrate proteins are able to modulate the progression of different types of cancer in events that compromise the functionality of the immune responses.
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20
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Abstract
Glycosylation has a profound influence on protein activity and cell biology through a variety of mechanisms, such as protein stability, receptor interactions and signal transduction. In many rheumatic diseases, a shift in protein glycosylation occurs, and is associated with inflammatory processes and disease progression. For example, the Fc-glycan composition on (auto)antibodies is associated with disease activity, and the presence of additional glycans in the antigen-binding domains of some autoreactive B cell receptors can affect B cell activation. In addition, changes in synovial fibroblast cell-surface glycosylation can alter the synovial microenvironment and are associated with an altered inflammatory state and disease activity in rheumatoid arthritis. The development of our understanding of the role of glycosylation of plasma proteins (particularly (auto)antibodies), cells and tissues in rheumatic pathological conditions suggests that glycosylation-based interventions could be used in the treatment of these diseases.
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Affiliation(s)
- Theresa Kissel
- Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - René E M Toes
- Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Thomas W J Huizinga
- Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands.
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21
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Glycan-Lectin Interactions as Novel Immunosuppression Drivers in Glioblastoma. Int J Mol Sci 2022; 23:ijms23116312. [PMID: 35682991 PMCID: PMC9181495 DOI: 10.3390/ijms23116312] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/23/2022] [Accepted: 06/03/2022] [Indexed: 02/04/2023] Open
Abstract
Despite diagnostic and therapeutic improvements, glioblastoma (GB) remains one of the most threatening brain tumor in adults, underlining the urgent need of new therapeutic targets. Lectins are glycan-binding proteins that regulate several biological processes through the recognition of specific sugar motifs. Lectins and their ligands are found on immune cells, endothelial cells and, also, tumor cells, pointing out a strong correlation among immunity, tumor microenvironment and vascularization. In GB, altered glycans and lectins contribute to tumor progression and immune evasion, shaping the tumor-immune landscape promoting immunosuppressive cell subsets, such as myeloid-derived suppressor cells (MDSCs) and M2-macrophages, and affecting immunoeffector populations, such as CD8+ T cells and dendritic cells (DCs). Here, we discuss the latest knowledge on the immune cells, immune related lectin receptors (C-type lectins, Siglecs, galectins) and changes in glycosylation that are involved in immunosuppressive mechanisms in GB, highlighting their interest as possible novel therapeutical targets.
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