{"title":"Distinct Cellular Tropism and Immune Responses to Alphavirus Infection.","authors":"Natasha M Kafai, Michael S Diamond, Julie M Fox","doi":"10.1146/annurev-immunol-101220-014952","DOIUrl":"https://doi.org/10.1146/annurev-immunol-101220-014952","url":null,"abstract":"<p><p>Alphaviruses are emerging and reemerging viruses that cause disease syndromes ranging from incapacitating arthritis to potentially fatal encephalitis. While infection by arthritogenic and encephalitic alphaviruses results in distinct clinical manifestations, both virus groups induce robust innate and adaptive immune responses. However, differences in cellular tropism, type I interferon induction, immune cell recruitment, and B and T cell responses result in differential disease progression and outcome. In this review, we discuss aspects of immune responses that contribute to protective or pathogenic outcomes after alphavirus infection.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"40 ","pages":"615-649"},"PeriodicalIF":29.7,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10350340/pdf/nihms-1913153.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9774416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Instructive Cues of Thymic T Cell Selection.","authors":"Magali Irla","doi":"10.1146/annurev-immunol-101320-022432","DOIUrl":"https://doi.org/10.1146/annurev-immunol-101320-022432","url":null,"abstract":"A high diversity of αβ T cell receptors (TCRs), capable of recognizing virtually any pathogen but also self-antigens, is generated during T cell development in the thymus. Nevertheless, a strict developmental program supports the selection of a self-tolerant T cell repertoire capable of responding to foreign antigens. The steps of T cell selection are controlled by cortical and medullary stromal niches, mainly composed of thymic epithelial cells and dendritic cells. The integration of important cues provided by these specialized niches, including (a) the TCR signal strength induced by the recognition of self-peptide-MHC complexes, (b) costimulatory signals, and (c) cytokine signals, critically controls T cell repertoire selection. This review discusses our current understanding of the signals that coordinate positive selection, negative selection, and agonist selection of Foxp3+ regulatory T cells. It also highlights recent advances that have unraveled the functional diversity of thymic antigen-presenting cell subsets implicated in T cell selection.","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"40 1","pages":"95-119"},"PeriodicalIF":29.7,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49224370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Hammad, Nincy Debeuf, H. Aegerter, A. Brown, B. Lambrecht
{"title":"Emerging Paradigms in Type 2 Immunity.","authors":"H. Hammad, Nincy Debeuf, H. Aegerter, A. Brown, B. Lambrecht","doi":"10.1146/annurev-immunol-101320-030339","DOIUrl":"https://doi.org/10.1146/annurev-immunol-101320-030339","url":null,"abstract":"A principal purpose of type 2 immunity was thought to be defense against large parasites, but it also functions in the restoration of homeostasis, such as toxin clearance following snake bites. In other cases, like allergy, the type 2 T helper (Th2) cytokines and cells present in the environment are detrimental and cause diseases. In recent years, the recognition of cell heterogeneity within Th2-associated cell populations has revealed specific functions of cells with a particular phenotype or gene signature. In addition, here we discuss the recent data regarding heterogeneity of type 2 immunity-related cells, as well as their newly identified role in a variety of processes ranging from involvement in respiratory viral infections [especially in the context of the recent COVID-19 (coronavirus disease 2019) pandemic] to control of cancer development or of metabolic homeostasis.","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"40 1","pages":"443-467"},"PeriodicalIF":29.7,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41533386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Functional Hallmarks of Healthy Macrophage Responses: Their Regulatory Basis and Disease Relevance.","authors":"Katherine M Sheu, Alexander Hoffmann","doi":"10.1146/annurev-immunol-101320-031555","DOIUrl":"10.1146/annurev-immunol-101320-031555","url":null,"abstract":"<p><p>Macrophages are first responders for the immune system. In this role, they have both effector functions for neutralizing pathogens and sentinel functions for alerting other immune cells of diverse pathologic threats, thereby initiating and coordinating a multipronged immune response. Macrophages are distributed throughout the body-they circulate in the blood, line the mucosal membranes, reside within organs, and survey the connective tissue. Several reviews have summarized their diverse roles in different physiological scenarios and in the initiation or amplification of different pathologies. In this review, we propose that both the effector and the sentinel functions of healthy macrophages rely on three hallmark properties: response specificity, context dependence, and stimulus memory. When these hallmark properties are diminished, the macrophage's biological functions are impaired, which in turn results in increased risk for immune dysregulation, manifested by immune deficiency or autoimmunity. We review the evidence and the molecular mechanisms supporting these functional hallmarks.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"40 ","pages":"295-321"},"PeriodicalIF":29.7,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10074967/pdf/nihms-1878081.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9271460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annual review of immunologyPub Date : 2022-04-26Epub Date: 2022-02-03DOI: 10.1146/annurev-immunol-101320-011829
Ivaylo I Ivanov, Timur Tuganbaev, Ashwin N Skelly, Kenya Honda
{"title":"T Cell Responses to the Microbiota.","authors":"Ivaylo I Ivanov, Timur Tuganbaev, Ashwin N Skelly, Kenya Honda","doi":"10.1146/annurev-immunol-101320-011829","DOIUrl":"10.1146/annurev-immunol-101320-011829","url":null,"abstract":"<p><p>The immune system employs recognition tools to communicate with its microbial evolutionary partner. Among all the methods of microbial perception, T cells enable the widest spectrum of microbial recognition resolution, ranging from the crudest detection of whole groups of microbes to the finest detection of specific antigens. The application of this recognition capability to the crucial task of combatting infections has been the focus of classical immunology. We now appreciate that the coevolution of the immune system and the microbiota has led to development of a lush immunological decision tree downstream of microbial recognition, of which an inflammatory response is but one branch. In this review we discuss known T cell-microbe interactions in the gut and place them in the context of an algorithmic framework of recognition, context-dependent interpretation, and response circuits across multiple levels of microbial recognition resolution. The malleability of T cells in response to the microbiota presents an opportunity to edit immune response cellularity, identity, and functionality by utilizing microbiota-controlled pathways to promote human health.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"40 ","pages":"559-587"},"PeriodicalIF":26.9,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9296687/pdf/nihms-1823890.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9354672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth A Jacobsen, David J Jackson, Enrico Heffler, Sameer K Mathur, Albert J Bredenoord, Ian D Pavord, Praveen Akuthota, Florence Roufosse, Marc E Rothenberg
{"title":"Eosinophil Knockout Humans: Uncovering the Role of Eosinophils Through Eosinophil-Directed Biological Therapies.","authors":"Elizabeth A Jacobsen, David J Jackson, Enrico Heffler, Sameer K Mathur, Albert J Bredenoord, Ian D Pavord, Praveen Akuthota, Florence Roufosse, Marc E Rothenberg","doi":"10.1146/annurev-immunol-093019-125918","DOIUrl":"https://doi.org/10.1146/annurev-immunol-093019-125918","url":null,"abstract":"<p><p>The enigmatic eosinophil has emerged as an exciting component of the immune system, involved in a plethora of homeostatic and inflammatory responses. Substantial progress has been achieved through experimental systems manipulating eosinophils in vivo, initially in mice and more recently in humans. Researchers using eosinophil knockout mice have identified a contributory role for eosinophils in basal and inflammatory processes and protective immunity. Primarily fueled by the purported proinflammatory role of eosinophils in eosinophil-associated diseases, a series of anti-eosinophil therapeutics have emerged as a new class of drugs. These agents, which dramatically deplete eosinophils, provide a valuable opportunity to characterize the consequences of eosinophil knockout humans. Herein, we comparatively describe mouse and human eosinophil knockouts. We put forth the view that human eosinophils negatively contribute to a variety of diseases and, unlike mouse eosinophils, do not yet have an identified role in physiological health; thus, clarifying all roles of eosinophils remains an ongoing pursuit.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"39 ","pages":"719-757"},"PeriodicalIF":29.7,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8317994/pdf/nihms-1721148.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9517653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth M Steinert, Karthik Vasan, Navdeep S Chandel
{"title":"Mitochondrial Metabolism Regulation of T Cell-Mediated Immunity.","authors":"Elizabeth M Steinert, Karthik Vasan, Navdeep S Chandel","doi":"10.1146/annurev-immunol-101819-082015","DOIUrl":"https://doi.org/10.1146/annurev-immunol-101819-082015","url":null,"abstract":"<p><p>Recent evidence supports the notion that mitochondrial metabolism is necessary for T cell activation, proliferation, and function. Mitochondrial metabolism supports T cell anabolism by providing key metabolites for macromolecule synthesis and generating metabolites for T cell function. In this review, we focus on how mitochondrial metabolism controls conventional and regulatory T cell fates and function.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"39 ","pages":"395-416"},"PeriodicalIF":29.7,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10403253/pdf/nihms-1916344.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10298288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Noe Rodriguez-Rodriguez, Mayuri Gogoi, Andrew N J McKenzie
{"title":"Group 2 Innate Lymphoid Cells: Team Players in Regulating Asthma.","authors":"Noe Rodriguez-Rodriguez, Mayuri Gogoi, Andrew N J McKenzie","doi":"10.1146/annurev-immunol-110119-091711","DOIUrl":"https://doi.org/10.1146/annurev-immunol-110119-091711","url":null,"abstract":"<p><p>Type 2 immunity helps protect the host from infection, but it also plays key roles in tissue homeostasis, metabolism, and repair. Unfortunately, inappropriate type 2 immune reactions may lead to allergy and asthma. Group 2 innate lymphoid cells (ILC2s) in the lungs respond rapidly to local environmental cues, such as the release of epithelium-derived type 2 initiator cytokines/alarmins, producing type 2 effector cytokines such as IL-4, IL-5, and IL-13 in response to tissue damage and infection. ILC2s are associated with the severity of allergic asthma, and experimental models of lung inflammation have shown how they act as playmakers, receiving signals variously from stromal and immune cells as well as the nervous system and then distributing cytokine cues to elicit type 2 immune effector functions and potentiate CD4<sup>+</sup> T helper cell activation, both of which characterize the pathology of allergic asthma. Recent breakthroughs identifying stromal- and neuronal-derived microenvironmental cues that regulate ILC2s, along with studies recognizing the potential plasticity of ILC2s, have improved our understanding of the immunoregulation of asthma and opened new avenues for drug discovery.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"39 ","pages":"167-198"},"PeriodicalIF":29.7,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7614118/pdf/EMS163166.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10632778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Obsessive-Compulsive Behavior Isn't Necessarily a Bad Thing.","authors":"P. Marrack","doi":"10.1146/annurev-immunol-072319-033325","DOIUrl":"https://doi.org/10.1146/annurev-immunol-072319-033325","url":null,"abstract":"It is difficult to believe that in about 1960 practically nothing was known about the thymus and some of its products, T cells bearing αβ receptors for antigen. Thus I was lucky to join the field of T cell biology almost at its beginning, when knowledge about the cells was just getting off the ground and there was so much to discover. This article describes findings about these cells made by others and myself that led us all from ignorance, via complete confusion, to our current state of knowledge. I believe I was fortunate to practice science in very supportive institutions and with very collaborative colleagues in two countries that both encourage independent research by independent scientists, while simultaneously ignoring or somehow being able to avoid some of the difficulties of being a woman in what was, at the time, a male-dominated profession. Expected final online publication date for the Annual Review of Immunology, Volume 38 is April 26, 2020. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"1 1","pages":""},"PeriodicalIF":29.7,"publicationDate":"2020-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1146/annurev-immunol-072319-033325","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46534624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi-Ling Chen, Clare S Hardman, Koshika Yadava, Graham Ogg
{"title":"Innate Lymphocyte Mechanisms in Skin Diseases.","authors":"Yi-Ling Chen, Clare S Hardman, Koshika Yadava, Graham Ogg","doi":"10.1146/annurev-immunol-082919-093554","DOIUrl":"10.1146/annurev-immunol-082919-093554","url":null,"abstract":"<p><p>Innate lymphocyte populations are emerging as key effectors in tissue homeostasis, microbial defense, and inflammatory skin disease. The cells are evolutionarily ancient and carry conserved principles of function, which can be achieved through shared or unique specific mechanisms. Recent technological and treatment advances have provided insight into heterogeneity within and between individuals and species. Similar pathways can extend through to adaptive lymphocytes, which softens the margins with innate lymphocyte populations and allows investigation of nonredundant pathways of immunity and inflammation that might be amenable to therapeutic intervention. Here, we review advances in understanding of innate lymphocyte biology with a focus on skin disease and the roles of commensal and pathogen responses and tissue homeostasis.</p>","PeriodicalId":8271,"journal":{"name":"Annual review of immunology","volume":"38 ","pages":"171-202"},"PeriodicalIF":29.7,"publicationDate":"2020-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10031722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}