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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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3
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Cable J, Witwer KW, Coffey RJ, Milosavljevic A, von Lersner AK, Jimenez L, Pucci F, Barr MM, Dekker N, Barman B, Humphrys D, Williams J, de Palma M, Guo W, Bastos N, Hill AF, Levy E, Hantak MP, Crewe C, Aikawa E, Adamczyk AM, Zanotto TM, Ostrowski M, Arab T, Rabe DC, Sheikh A, da Silva DR, Jones JC, Okeoma C, Gaborski T, Zhang Q, Gololobova O. Exosomes, microvesicles, and other extracellular vesicles-a Keystone Symposia report. Ann N Y Acad Sci 2023; 1523:24-37. [PMID: 36961472 DOI: 10.1111/nyas.14974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2023]
Abstract
Extracellular vesicles (EVs) are small, lipid-bilayer-bound particles released by cells that can contain important bioactive molecules, including lipids, RNAs, and proteins. Once released in the extracellular environment, EVs can act as messengers locally as well as to distant tissues to coordinate tissue homeostasis and systemic responses. There is a growing interest in not only understanding the physiology of EVs as signaling particles but also leveraging them as minimally invasive diagnostic and prognostic biomarkers (e.g., they can be found in biofluids) and drug-delivery vehicles. On October 30-November 2, 2022, researchers in the EV field convened for the Keystone symposium "Exosomes, Microvesicles, and Other Extracellular Vesicles" to discuss developing standardized language and methodology, new data on the basic biology of EVs and potential clinical utility, as well as novel technologies to isolate and characterize EVs.
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Affiliation(s)
| | - Kenneth W Witwer
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Robert J Coffey
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Aleksandar Milosavljevic
- Department of Molecular and Human Genetics; Dan L Duncan Comprehensive Cancer Center; and Program in Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, Texas, USA
| | | | - Lizandra Jimenez
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Ferdinando Pucci
- Department of Otolaryngology-Head and Neck Surgery; Department of Cell, Developmental & Cancer Biology; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Maureen M Barr
- Department of Genetics and Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Niek Dekker
- Protein Sciences, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Bahnisikha Barman
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | | | - Justin Williams
- University of California, Berkeley, Berkeley, California, USA
| | - Michele de Palma
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology in Lausanne (EPFL); Agora Cancer Research Center; and Swiss Cancer Center Léman (SCCL), Lausanne, Switzerland
| | - Wei Guo
- Department of Biology, School of Arts & Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nuno Bastos
- i3S Instituto de Investigação e Inovação em Saúde; IPATIMUP Institute of Molecular Pathology and Immunology; and ICBAS Instituto de Ciencias Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - Andrew F Hill
- Research Centre for Extracellular Vesicles; Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University and Institute for Health and Sport, Victoria University, Melbourne, Victoria, Australia
| | - Efrat Levy
- Center for Dementia Research, Nathan S. Kline Institute for Psychiatric Research, Orangeburg, New York, USA
- Department of Psychiatry; Department of Biochemistry & Molecular Pharmacology; and NYU Neuroscience Institute, New York University Grossman School of Medicine, New York, New York, USA
| | - Michael P Hantak
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, Utah, USA
| | - Clair Crewe
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Cell Biology, Washington University, St. Louis, Missouri, USA
| | - Elena Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine and Center for Excellence in Vascular Biology, Department of Medicine; Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Tamires M Zanotto
- Section of Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Matias Ostrowski
- Facultad de Medicina, Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Tanina Arab
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Daniel C Rabe
- Mass General Cancer Center, Harvard Medical School, Charlestown, Massachusetts, USA
| | - Aadil Sheikh
- Department of Biology, College of Arts and Sciences, Baylor University, Waco, Texas, USA
| | | | - Jennifer C Jones
- Translational Nanobiology Section, Laboratory of Pathology and Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Chioma Okeoma
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, New York, USA
- Department of Pathology, Microbiology, and Immunology, New York Medical College, Valhalla, New York, USA
| | - Thomas Gaborski
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York, USA
| | - Qin Zhang
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Olesia Gololobova
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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4
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Adhikari R, Witwer KW, Wiberg KJ, Chen YC. The interplay among HIV, monocytes/macrophages, and extracellular vesicles: a systematic review. J Leukoc Biol 2023; 113:255-287. [PMID: 36802000 DOI: 10.1093/jleuko/qiac021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Indexed: 01/12/2023] Open
Abstract
Despite effective antiretroviral therapies, chronic inflammation and spontaneous viral "blips" occur in HIV-infected patients. Given the roles for monocytes/macrophages in HIV pathogenesis and extracellular vesicles in intercellular communication, we performed this systematic review to delineate the triad of HIV, monocytes/macrophages, and extracellular vesicles in the modulation of immune activation and HIV activities. We searched PubMed, Web of Science, and EBSCO databases for published articles, up to 18 August 2022, relevant to this triad. The search identified 11,836 publications, and 36 studies were deemed eligible and included in this systematic review. Data were extracted for the characteristics of HIV, monocytes/macrophages, and extracellular vesicles used for experiments and the immunologic and virologic outcomes in extracellular vesicle recipient cells. Evidence for the effects on outcomes was synthesized by stratifying the characteristics by outcomes. In this triad, monocytes/macrophages were potential producers and recipients of extracellular vesicles, whose cargo repertoires and functionalities were regulated by HIV infection and cellular stimulation. Extracellular vesicles derived from HIV-infected monocytes/macrophages or the biofluid of HIV-infected patients enhanced innate immune activation and HIV dissemination, cellular entry, replication, and latency reactivation in bystander or infected target cells. These extracellular vesicles could be synthesized in the presence of antiretroviral agents and elicit pathogenic effects in a wide range of nontarget cells. At least eight functional types of extracellular vesicles could be classified based on the diverse extracellular vesicle effects, which were linked to specific virus- and/or host-derived cargos. Thus, the monocyte/macrophage-centered multidirectional crosstalk through extracellular vesicles may help sustain persistent immune activation and residual viral activities during suppressed HIV infection.
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Affiliation(s)
- Romin Adhikari
- Laboratory of Biomedical Sciences and Epidemiology and Immune Knowledge of Infectious Diseases, Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD 21251, USA.,Department of Biology, Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD 21251, USA
| | - Kenneth W Witwer
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, 733 N. Broadway, Baltimore, MD 21205, USA.,Department of Neurology, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD 21287, USA
| | - Kjell J Wiberg
- Division of Infectious Diseases and HIV Clinic, Department of Medicine, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD 21215, USA
| | - Yun-Chi Chen
- Laboratory of Biomedical Sciences and Epidemiology and Immune Knowledge of Infectious Diseases, Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD 21251, USA.,Department of Biology, Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD 21251, USA.,RCMI@Morgan Center for Urban Health Disparities Research and Innovation, Morgan State University, 1700 E Cold Spring Ln, Baltimore, MD 21251, USA
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