{"title":"Lipopolysaccharide delivery systems in innate immunity.","authors":"Jiao Liu, Rui Kang, Daolin Tang","doi":"10.1016/j.it.2024.02.003","DOIUrl":null,"url":null,"abstract":"<p><p>Lipopolysaccharide (LPS), a key component of the outer membrane in Gram-negative bacteria (GNB), is widely recognized for its crucial role in mammalian innate immunity and its link to mortality in intensive care units. While its recognition via the Toll-like receptor (TLR)-4 receptor on cell membranes is well established, the activation of the cytosolic receptor caspase-11 by LPS is now known to lead to inflammasome activation and subsequent induction of pyroptosis. Nevertheless, a fundamental question persists regarding the mechanism by which LPS enters host cells. Recent investigations have identified at least four primary pathways that can facilitate this process: bacterial outer membrane vesicles (OMVs); the spike (S) protein of SARS-CoV-2; host-secreted proteins; and host extracellular vesicles (EVs). These delivery systems provide new avenues for therapeutic interventions against sepsis and infectious diseases.</p>","PeriodicalId":54412,"journal":{"name":"Trends in Immunology","volume":" ","pages":"274-287"},"PeriodicalIF":13.1000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Trends in Immunology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.it.2024.02.003","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/3/16 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Lipopolysaccharide (LPS), a key component of the outer membrane in Gram-negative bacteria (GNB), is widely recognized for its crucial role in mammalian innate immunity and its link to mortality in intensive care units. While its recognition via the Toll-like receptor (TLR)-4 receptor on cell membranes is well established, the activation of the cytosolic receptor caspase-11 by LPS is now known to lead to inflammasome activation and subsequent induction of pyroptosis. Nevertheless, a fundamental question persists regarding the mechanism by which LPS enters host cells. Recent investigations have identified at least four primary pathways that can facilitate this process: bacterial outer membrane vesicles (OMVs); the spike (S) protein of SARS-CoV-2; host-secreted proteins; and host extracellular vesicles (EVs). These delivery systems provide new avenues for therapeutic interventions against sepsis and infectious diseases.
期刊介绍：
Trends in Immunology serves as a vital platform for tracking advancements across various areas of immunology, offering concise reviews and hypothesis-driven viewpoints in each issue. With additional sections providing comprehensive coverage, the journal offers a holistic view of immunology. This broad perspective makes it an invaluable resource for researchers, educators, and students, facilitating the connection between basic and clinical immunology. Recognized as one of the top monthly review journals in its field, Trends in Immunology is highly regarded by the scientific community.
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