Seminars in Immunology最新文献

{"title":"The role of sialoglycans in modulating dendritic cell function and tumour immunity","authors":"Zélia Silva ,&nbsp;Cátia O. Soares ,&nbsp;Mariana Barbosa ,&nbsp;Angelina S. Palma ,&nbsp;Filipa Marcelo ,&nbsp;Paula A. Videira","doi":"10.1016/j.smim.2024.101900","DOIUrl":"10.1016/j.smim.2024.101900","url":null,"abstract":"<div><div>Dendritic cells (DCs) are crucial for initiating immune responses against tumours by presenting antigens to T cells. Glycosylation, particularly sialylation, plays a significant role in regulating cell functions, by modulating protein folding and signalling. This review aimed to provide a comprehensive overview of how sialic acids influence key aspects of DC biology, including maturation, migration, antigen presentation, and T cell interactions. Sialic acids influence DC endocytosis, affecting their ability to uptake and present antigens, while guiding their migration to lymph nodes and inflamed tissues. Removing sialic acids enhances DC-mediated antigen presentation to T cells, potentially boosting immune responses. Additionally, sialylated glycans on DCs modulate immune checkpoints, which can impact tumour immunity. Hypersialylation of tumour mucins further promotes immune evasion by interacting with DCs. Understanding the interplay between sialylation and DC functions offers promising avenues for enhancing cancer immunotherapy.</div></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"74 ","pages":"Article 101900"},"PeriodicalIF":7.4,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142511651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of glycans in health and disease: Regulators of the interaction between gut microbiota and host immune system","authors":"Lucy I. Crouch ,&nbsp;Cláudia S. Rodrigues ,&nbsp;Cassie R. Bakshani ,&nbsp;Leticia Tavares-Gomes ,&nbsp;Joana Gaifem ,&nbsp;Salomé S. Pinho","doi":"10.1016/j.smim.2024.101891","DOIUrl":"10.1016/j.smim.2024.101891","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101891"},"PeriodicalIF":7.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142401758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The origins, manifestations, and potential treatments of allergic disorders","authors":"Donata Vercelli ,&nbsp;Stephen J. Galli","doi":"10.1016/j.smim.2024.101886","DOIUrl":"https://doi.org/10.1016/j.smim.2024.101886","url":null,"abstract":"","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101886"},"PeriodicalIF":7.8,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141314536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Durability of immune responses to SARS-CoV-2 infection and vaccination","authors":"Mehul S. Suthar","doi":"10.1016/j.smim.2024.101884","DOIUrl":"https://doi.org/10.1016/j.smim.2024.101884","url":null,"abstract":"<div><p>Infection with SARS-CoV-2 in humans has caused a pandemic of unprecedented dimensions. SARS-CoV-2 is primarily transmitted through respiratory droplets and targets ciliated epithelial cells in the nasal cavity, trachea, and lungs by utilizing the cellular receptor angiotensin-converting enzyme 2 (ACE2). The innate immune response, including type I and III interferons, inflammatory cytokines (IL-6, TNF-α, IL-1β), innate immune cells (monocytes, DCs, neutrophils, natural killer cells), antibodies (IgG, sIgA, neutralizing antibodies), and adaptive immune cells (B cells, CD8+ and CD4+ T cells) play pivotal roles in mitigating COVID-19 disease. Broad and durable B-cell– and T-cell immunity elicited by infection and vaccination is essential for protection against severe disease, hospitalization and death. However, the emergence of SARS-CoV-2 variants that evade neutralizing antibodies continue to jeopardize vaccine efficacy. In this review, we highlight our understanding the infection- and vaccine-mediated humoral, B and T cell responses, the durability of the immune responses, and how variants continue to threaten the efficacy of SARS-CoV-2 vaccines.</p></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101884"},"PeriodicalIF":7.8,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141303368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The world’s largest experiment in human immunology","authors":"Bali Pulendran","doi":"10.1016/j.smim.2024.101888","DOIUrl":"10.1016/j.smim.2024.101888","url":null,"abstract":"","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101888"},"PeriodicalIF":7.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early life microbiome influences on development of the mucosal innate immune system","authors":"Aline Ignacio,&nbsp;Sonia Czyz,&nbsp;Kathy D. McCoy","doi":"10.1016/j.smim.2024.101885","DOIUrl":"https://doi.org/10.1016/j.smim.2024.101885","url":null,"abstract":"<div><p>The gut microbiota is well known to possess immunomodulatory capacities, influencing a multitude of cellular signalling pathways to maintain host homeostasis. Although the formation of the immune system initiates before birth in a sterile environment, an emerging body of literature indicates that the neonatal immune system is influenced by a first wave of external stimuli that includes signals from the maternal microbiota. A second wave of stimulus begins after birth and must be tightly regulated during the neonatal period when colonization of the host occurs concomitantly with the maturation of the immune system, requiring a fine adjustment between establishing tolerance towards the commensal microbiota and preserving inflammatory responses against pathogenic invaders. Besides integrating cues from commensal microbes, the neonatal immune system must also regulate responses triggered by other environmental signals, such as dietary antigens, which become more complex with the introduction of solid food during the weaning period. This “window of opportunity” in early life is thought to be crucial for the proper development of the immune system, setting the tone of subsequent immune responses in adulthood and modulating the risk of developing chronic and metabolic inflammatory diseases. Here we review the importance of host-microbiota interactions for the development and maturation of the immune system, particularly in the early-life period, highlighting the known mechanisms involved in such communication. This discussion is focused on recent data demonstrating microbiota-mediated education of innate immune cells and its role in the development of lymphoid tissues.</p></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101885"},"PeriodicalIF":7.8,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S104453232400023X/pdfft?md5=d018d4af0ce3c913e6674c37e433dcb9&pid=1-s2.0-S104453232400023X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141090243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Siglecs as modulators of macrophage phenotype and function","authors":"Emily N. Kukan,&nbsp;Gabrielle L. Fabiano,&nbsp;Brian A. Cobb","doi":"10.1016/j.smim.2024.101887","DOIUrl":"10.1016/j.smim.2024.101887","url":null,"abstract":"<div><div>The sialic acid-binding immunoglobulin-like lectins (Siglecs) are a family of receptors expressed widely on cells of the hematopoietic system. Siglecs recognize terminal sialic acid residues on glycans and often initiate intracellular signaling upon ligation. Cells can express several Siglec family members concurrently with each showing differential specificities for sialic acid linkages to the underlying glycan as well as varied hydroxyl substitutions, allowing these receptors to fine tune downstream responses. Macrophages are among the many immune cells that express Siglec family members. Macrophages exhibit wide diversity in their phenotypes and functions, and this diversity is often mediated by signals from the local environment, including those from glycans. In this review, we detail the known expression of Siglecs in macrophages while focusing on their functional importance and potential clinical relevance.</div></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101887"},"PeriodicalIF":7.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142367196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-throughput N-glycan analysis in aging and inflammaging: State of the art and future directions","authors":"A. Cindrić ,&nbsp;T. Pribić ,&nbsp;G. Lauc","doi":"10.1016/j.smim.2024.101890","DOIUrl":"10.1016/j.smim.2024.101890","url":null,"abstract":"<div><div>As the global population ages at an unprecedented rate, the prevalence of age-related diseases is increasing, making inflammaging – a phenomenon characterized by a chronic, low-grade inflammatory state that follows aging – a significant concern. Understanding the mechanisms of inflammaging and its impact on health is critical for developing strategies to improve the quality of life and manage health in the aging population. Despite their crucial roles in various biological processes, including immune response modulation, N-glycans, oligosaccharides covalently attached to many proteins, are often overlooked in clinical and research studies. This repeated oversight is largely due to their inherent complexity and the complexity of the analysis methods. High-throughput N-glycan analysis has emerged as a transformative tool in N-glycosylation research, enabling cost- and time-effective, detailed, and large-scale examination of N-glycan profiles. This paper is the first to explore the application of high-throughput N-glycomics techniques to investigate the complex interplay between N-glycosylation and the immune system in aging. Technological advancements have significantly improved Nglycan detection and characterization, providing insights into age-related changes in Nglycosylation. Key findings highlight consistent shifts in immunoglobulin G (IgG) and plasma/serum glycoprotein glycosylation with age, with a pronounced rise in agalactosylated structures bound to IgG that also affect the composition of the total plasma N-glycome. These N-glycan modifications seem to be strongly associated with inflammaging and have been identified as valuable biomarkers for biological age, predictors of disease risk, and proxy biomarkers for monitoring intervention efficacy at the individual level. Despite current challenges related to data complexity and methodological limitations, ongoing technological innovations and interdisciplinary research are expected tofurther advance our knowledge of glycan biology, improve diagnostic and therapeutic strategies, and promote healthier aging. The integration of glycomics with other omics approaches holds promise for a more comprehensive understanding of the aging immune system, paving the way for personalized medicine and targeted interventions to mitigate inflammaging. In conclusion, this paper underscores the transformative impact of high-throughput Nglycan analysis in aging and inflammaging</div></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101890"},"PeriodicalIF":7.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to the Special Issue: Pyroptosis in Immunity and Inflammation","authors":"Feng Shao","doi":"10.1016/j.smim.2024.101883","DOIUrl":"https://doi.org/10.1016/j.smim.2024.101883","url":null,"abstract":"","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"73 ","pages":"Article 101883"},"PeriodicalIF":7.8,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140549898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"B cell clonality in cancer","authors":"E.A. Bryushkova ,&nbsp;N.V. Mushenkova ,&nbsp;M.A. Turchaninova ,&nbsp;D.K. Lukyanov ,&nbsp;D.M. Chudakov ,&nbsp;E.O. Serebrovskaya","doi":"10.1016/j.smim.2024.101874","DOIUrl":"https://doi.org/10.1016/j.smim.2024.101874","url":null,"abstract":"<div><p>Carcinogenesis in the process of long-term co-evolution of tumor cells and immune environment essentially becomes possible due to incorrect decisions made, remembered, and reproduced by the immune system at the level of clonal populations of antigen-specific T- and B-lymphocytes. Tumor-immunity interaction determines the nature of such errors and, consequently, delineates the possible ways of successful immunotherapeutic intervention. It is generally recognized that tumor-infiltrating B cells (TIL-B) can play both pro-tumor and anti-tumor roles. However, the exact mechanisms that determine the contribution of clonal B cell lineages with different specificities and functions remain largely unclear. This is due to the variability of cancer types, the molecular heterogeneity of tumor cells, and, to a large extent, the individual pattern of each immune response. Further progress requires detailed investigation of the functional properties and phenotypes of clonally heterogeneous B cells in relation to their antigenic specificities, which determine the functionality of both effector B lymphocytes and immunoglobulins produced in the tumor environment. Based on a real understanding of the role of clonal antigen-specific populations of B lymphocytes in the tumor microenvironment, we need to learn how to develop new methods of targeted immunotherapy, as well as adapt existing treatment options to the specific needs of different patients and patient subgroups. In this review, we will cover B cells functional diversity and their multifaceted roles in the tumor environment.</p></div>","PeriodicalId":49546,"journal":{"name":"Seminars in Immunology","volume":"72 ","pages":"Article 101874"},"PeriodicalIF":7.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140162551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}