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Structural Basis For Rna Recognition And Activation By Human Innate Immune Receptor Rig 1
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Book Synopsis Structural Basis for RNA Recognition and Activation by Human Innate Immune Receptor RIG-1 by : Fuguo Jiang
Download or read book Structural Basis for RNA Recognition and Activation by Human Innate Immune Receptor RIG-1 written by Fuguo Jiang and published by . This book was released on 2013 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innate immunity provides the first line of host defense against pathogenic microbial and viral invasion. Activation of innate immune responses relies on the specific recognition of pathogen-associated molecular patterns (PAMPs) by pattern-recognition receptors (PRRs). Retinoic acid Inducible Gene- I (RIG-I) is a crucial PPR in the cytoplasm that induces antiviral and inflammatory immune responses against RNA viruses by selectively detecting PAMP RNAs. The RIG-I signaling pathway is highly regulated. Aberrant signaling can lead to apoptosis and altered cell differentiation, which have been implicated in the development of inflammation, autoimmune diseases including type 1 diabetes, and cancer. We have collaborated with Dr. Michael Gale at University of Washington School of Medicine to identify the poly-uridine motif of the Hepatitis C virus (HCV) genome 3' non-translated region and its replication intermediate as a PAMP substrate of RIG-I (Saito et al., 2008). To this end, I have developed efficient expression and purification methods for human RIG-I, and characterized the protein using biochemical and biophysical methods. Highly purified RIG-I protein was then used to verify HCV PAMP RNA in vitro by gel shift assay and limited proteolysis. RIG-I consists of two N-terminal caspase recruitment domains (CARDs), a central DExD/H box RNA helicase/ATPase domain, and a C- terminal repressor domain (RD). To understand how the RIG-I helicase binds RNA and leads to activation, I have determined the crystal structure of the human RIG-I helicase-RD domain bound to dsRNA and ADP·BeF3 in collaboration with Dr. Smita Patel's group at UMDNJ. The structure of ternary complex reveals a major contribution from the helicase domain to RNA binding and a synergy between the helicase and RD in recognition of blunt-ended dsRNA (Jiang et al., 2011). Furthermore, I have determined the crystal structures of RIG-I bound to panhandle-like short hairpin RNAs in the presence or absence of 5'-triphosphorylated modification, and chimeric RNA-DNA duplex at high resolution. These recent structures provide further insights into the molecular mechanics of RNA recognition and RIG-I activation upon viral infection.
Book Synopsis Nucleic Acids in Innate Immunity by : Ken J. Ishii
Download or read book Nucleic Acids in Innate Immunity written by Ken J. Ishii and published by CRC Press. This book was released on 2008-05-22 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, innate immunity was regarded as a relatively nonspecific system designed to engulf and destroy pathogens. However, new studies show that the innate immune system is highly developed in its ability to discriminate between self and foreign entities. Understanding this mechanism can lead to therapeutic strategies based on manipulation
Book Synopsis RNA Recognition by the Pattern Recognition Receptor RIG-I: Roles of RNA Binding, Multimerization, and RNA-dependent ATPase Activity by : Elizabeth Erin DeLaney
Download or read book RNA Recognition by the Pattern Recognition Receptor RIG-I: Roles of RNA Binding, Multimerization, and RNA-dependent ATPase Activity written by Elizabeth Erin DeLaney and published by . This book was released on 2014 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recognition of viral RNA by mammalian cells is critical for the activation of the innate immune system. Viral RNA is recognized by several pathogen recognition receptors, including retinoic acid inducible gene I, or RIG-I. RIG-I consists of two N-terminal tandem caspase activation and recruitment domains, a central helicase/ATPase domain, and a C-terminal regulatory domain. Following RNA binding, RIG-I undergoes a conformational change, ubiquitination, and dimerization, all of which are necessary for interaction with the adaptor protein mitochondrial antiviral signaling (MAVS). Binding to MAVS triggers signaling cascades that induce the transcription of antiviral peptides. RIG-I has been shown to be activated by both dsRNA and dsRNA containing 5'-triphosphates in vivo, and its ATPase activity is critical for activation. A significant body of work has been published regarding the cellular role of RIG-I, but how RIG-I distinguishes viral RNAs from cellular RNAs remains unclear. To understand how RIG-I distinguishes between different substrates, we performed a biochemical analysis of RIG-I RNA binding, ATPase activity, and oligomerization. We used purified RIG-I to quantitatively analyze how RIG-I interacts with various model RNAs. We show that RIG-I binds tightly to dsRNA regardless of the presence of a 5'- triphosphate. Dissociation of RIG-I from RNA is enhanced by ATP. RIG-I ATPase activity is stimulated by RNA duplexes as short as 10 bp, and a RIG-I monomer is sufficient for ATPase activity. RIG-I binds to RNA duplexes with and without blunt ends, however ATPase activity is only activated by RNA duplexes containing at least one blunt end. Collectively, these data suggest that duplex structure and nucleotide binding play a critical role in RIG-I binding and activation. Our data suggest a model in which distinguishing self from non-self RNA requires the recognition of multiple features in a single RNA by RIG-I.
Book Synopsis Toll-Like Receptors (TLRs) and Innate Immunity by : Stefan Bauer
Download or read book Toll-Like Receptors (TLRs) and Innate Immunity written by Stefan Bauer and published by Springer Science & Business Media. This book was released on 2007-12-11 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall recent research on TLRs has led to tremendous increase in our understanding of early steps in pathogen recognition and will presumably lead to potent TLR targeting therapeutics in the future. This book reviews and highlights our recent understanding on the function and ligands of TLRs as well as their role in autoimmunity, dendritic cell activation and target structures for therapeutic intervention.
Book Synopsis Structural Immunology by : Tengchuan Jin
Download or read book Structural Immunology written by Tengchuan Jin and published by Springer Nature. This book was released on 2019-10-18 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of important immune molecules and their structure-function relationships. The immune system is highly complex, consisting of a network of molecules, cells, tissues and organs, and the immune reaction is involved in various physiological as well as pathological processes, including development, self-tolerance, infection, immunity, and cancer. Numerous molecules participate in immune recognition, inhibition and activation, and these important immune molecules can be roughly divided into cell surface receptors, intracellular receptors and intracellular signaling molecules. The study of how these immune molecules function at molecular level has laid the foundation for understanding the immune system. The book provides researchers and students with the latest research advances concerning the structural biology of key immune molecules/pathways, and offers immunologists essential insights into how these immune molecules function.
Book Synopsis Self and Nonself by : Carlos López-Larrea
Download or read book Self and Nonself written by Carlos López-Larrea and published by Springer Science & Business Media. This book was released on 2012-03-07 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1960 Sir Frank Macfarlane Burnet received the Noble Prize in Physiology and Medicine. He titled his Nobel Lecture “Immunological Recognition of Self” emphasizing the central argument of immunological tolerance in “How does the vertebrate organism recognize self from nonself in this the immunological sense—and how did the capacity evolve.” The concept of self is linked to the concept of biological self identity. All organisms, from bacteria to higher animals, possess recognition systems to defend themselves from nonself. Even in the context of the limited number of metazoan phyla that have been studied in detail, we can now describe many of the alternative mechanism of immune recognition that have emerged at varying points in phylogeny. Two different arms—the innate and adaptive immune system—have emerged at different moments in evolution, and they are conceptually different. The ultimate goals of immune biology include reconstructing the molecular networks underlying immune processes.
Book Synopsis Modification and Editing of RNA by : Henri Grosjean
Download or read book Modification and Editing of RNA written by Henri Grosjean and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Comprehensive, current text explores the manifold ways in which living cells respond to genomic injury and alterations, including both spontaneous and environmentally induced DNA damage. With more than 4,000 complete references to primary research literature and over 380 color figures throughout, this book is an important text for all courses in DNA repair and mutagenesis. It will also serve as a major reference for all molecular biologists working in cancer biology, recombination, transcription and gene regulation, DNA replication, environmental studies, and biological evolution.
Book Synopsis DNA and RNA Modification Enzymes by : Henri Grosjean
Download or read book DNA and RNA Modification Enzymes written by Henri Grosjean and published by CRC Press. This book was released on 2009-06-11 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a timely and comprehensive description of the many facets of DNA and RNA modification-editing processes and to some extent repair mechanisms. Each chapter offers fundamental principles as well as up to date information on recent advances in the field (up to end 2008). They ended by a shortconclusion and future prospect' section and
Download or read book Encyclopedia of Immunobiology written by and published by Academic Press. This book was released on 2016-04-27 with total page 3161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Immunobiology, Five Volume Set provides the largest integrated source of immunological knowledge currently available. It consists of broad ranging, validated summaries on all of the major topics in the field as written by a team of leading experts. The large number of topics covered is relevant to a wide range of scientists working on experimental and clinical immunology, microbiology, biochemistry, genetics, veterinary science, physiology, and hematology. The book is built in thematic sections that allow readers to rapidly navigate around related content. Specific sections focus on basic, applied, and clinical immunology. The structure of each section helps readers from a range of backgrounds gain important understanding of the subject. Contains tables, pictures, and multimedia features that enhance the learning process In-depth coverage allows readers from a range of backgrounds to benefit from the material Provides handy cross-referencing between articles to improve readability, including easy access from portable devices
Book Synopsis RNA-protein Interactions by : Kiyoshi Nagai
Download or read book RNA-protein Interactions written by Kiyoshi Nagai and published by Oxford University Press, USA. This book was released on 1994 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of RNA-protein interactions is crucial to understanding the mechanisms and control of gene expression and protein synthesis. The realization that RNAs are often far more biologically active than was previously appreciated has stimulated a great deal of new research in this field. Uniquely, in this book, the world's leading researchers have collaborated to produce a comprehensive and current review of RNA-protein interactions for all scientists working in this area. Timely, comprehensive, and authoritative, this new Frontiers title will be invaluable for all researchers in molecular biology, biochemistry and structural biology.
Book Synopsis Innate Immunity in Health and Disease by : Shailendra K. Saxena
Download or read book Innate Immunity in Health and Disease written by Shailendra K. Saxena and published by BoD – Books on Demand. This book was released on 2021-08-25 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on various aspects and properties of innate immunity, whose deep understanding is integral for safeguarding the human race from further loss of resources and economies due to innate immune response-mediated diseases. Throughout this book, we examine the individual mechanisms by which the innate immune response acts to protect the host from pathogenic infectious agents and other non-communicable diseases. Written by experts in the field, the volume discusses the significance of macrophages in infectious disease, tumor metabolism, and muscular disorders. Chapters cover such topics as the fate of differentiated macrophages and the molecular pathways that are important for the pathologic role of macrophages.
Book Synopsis Proceedings of ICI Milan 2013 by : Alberto Martini
Download or read book Proceedings of ICI Milan 2013 written by Alberto Martini and published by Frontiers E-books. This book was released on 2014-11-11 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Research Topic covers all of the major lectures and symposia addresses delivered by invited speakers at the 2013 International Congress in Immunology (ICI) at Milan, Italy, August 22-27, 2013.
Book Synopsis Eukaryotic RNases and their Partners in RNA Degradation and Biogenesis by :
Download or read book Eukaryotic RNases and their Partners in RNA Degradation and Biogenesis written by and published by Academic Press. This book was released on 2012-12-31 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special volume of The Enzymes is targeted towards researchers in biochemistry, molecular and cell biology, pharmacology, and cancer. This thematic volume discusses Eukaryotic RNases and their partners in RNA degradation and biogenesis. Contributions from leading authorities Informs and updates on all the latest developments in the field
Book Synopsis Macromolecular Structure Underlying Recognition in Innate Immunity by : Uttara SenGupta
Download or read book Macromolecular Structure Underlying Recognition in Innate Immunity written by Uttara SenGupta and published by Frontiers Media SA. This book was released on 2018-07-09 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Medical Microbiology by : Yi-Wei Tang
Download or read book Molecular Medical Microbiology written by Yi-Wei Tang and published by Academic Press. This book was released on 2014-09-14 with total page 2214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The molecular age has brought about dramatic changes in medical microbiology, and great leaps in our understanding of the mechanisms of infectious disease. Molecular Medical Microbiology is the first book to synthesise the many new developments in both molecular and clinical research in a single comprehensive resource. This timely and authoritative three-volume work is an invaluable reference source of medical bacteriology. Comprising more than 100 chapters, organized into 17 major sections, the scope of this impressive work is wide-ranging. Written by experts in the field, chapters include cutting-edge information, and clinical overviews for each major bacterial group, in addition to the latest updates on vaccine development, molecular technology and diagnostic technology. Topics covered include bacterial structure, cell function, and genetics; mechanisms of pathogenesis and prevention; antibacterial agents; and infections ranging from gastrointestinal to urinary tract, centrtal nervous system, respiratory tract, and more. - The first comprehensive and accessible reference on molecular medical microbiology - Full color presentation througout - In-depth discussion of individual pathogenic bacteria in a system-oriented approach - Includes a clinical overview for each major bacterial group - Presents the latest information on vaccine development, molecular technology, and diagnostic technology - More than 100 chapters covering all major groups of bacteria - Written by an international panel of authors who are experts in their respective disciplines
Book Synopsis Immunoregulatory Mechanisms of Interferon by : Jorg Hermann Fritz
Download or read book Immunoregulatory Mechanisms of Interferon written by Jorg Hermann Fritz and published by Frontiers Media SA. This book was released on 2020-03-11 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interferons (IFN) belong to the family of cytokines and have been described first in the late 1950s as an inhibitory factor of viral replication. Since then, the impact of interferon has been greatly expanded and its function comprises a role not only in different types of infection, cancer and autoimmunity but importantly also in immunehomeostasis. IFN have important anti-viral effects but it is becoming more and more evident that they are true immunomodulators and have an important impact on the development and maintenance of innate and adaptive immunity.
Book Synopsis Fields Virology: Emerging Viruses by : Peter M. Howley
Download or read book Fields Virology: Emerging Viruses written by Peter M. Howley and published by Lippincott Williams & Wilkins. This book was released on 2020-02-11 with total page 2597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in four convenient volumes, Field’s Virology remains the most authoritative reference in this fast-changing field, providing definitive coverage of virology, including virus biology as well as replication and medical aspects of specific virus families. This volume of Field’s Virology: Emerging Viruses, 7th Edition covers recent changes in emerging viruses, providing new or extensively revised chapters that reflect these advances in this dynamic field.
