Download or read book A Possible Mechanism of Vaccinia Virus induced Shut off of Host Protein Synthesis written by Mei-Jhy Su and published by . This book was released on 1990 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selective Protein Synthesis During Vaccinia Virus induced Host Shutoff written by Pragyesh Dhungel and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During infection, poxvirus makes host cells conducive for viral replication by causing host shutoff that is marked by global inhibition of host protein synthesis. Host shutoff facilitates the reallocation of cellular resources for viral replication and evasion of host antiviral immune responses. However, it poses a challenge for continuous synthesis of crucial cellular proteins and viral proteins that are important for viral replication. It is unclear whether and how viral and specific cellular proteins are selectively synthesized during poxvirus-induced host shutoff. In this dissertation, we elucidated that vaccinia virus boosts viral post-replicative protein synthesis by using the 5'-poly(A) leader at the 5'-UTR. Vaccinia virus has evolutionarily optimized the length of the poly(A) leader, and uninterrupted poly(A) leader is required for promoting poxvirus protein production. During vaccinia virus-induced shutoff, poly(A) leader stipulates viral post-replicative mRNAs an adaptive mechanism to translate efficiently. The poly(A) leader translation was not mediated by an internal ribosome entry site (IRES) mode, albeit poly(A) leader mediates cap-independent mode of translation. Through further investigation, we uncovered a cellular RNA-binding protein La-Related Protein 4 (LARP4) that was repurposed to augment vaccinia virus post-replicative mRNA translation. During VACV infection, LARP4 is enriched in the virus factory where VACV post-replicative mRNAs are translated. A decrease of LARP4 protein level reduces VACV replication, blocks post-replicative protein synthesis, and decreases 5'-poly(A) leader mediated translational advantage. Further studies showed that LARP4 is vital for the cap-independent mode of translation from poly(A) leader. We also showed that infection of vaccinia virus, the prototypic poxvirus, induced selective synthesis of cellular proteins involved in oxidative phosphorylation. Using simultaneous RNA-seq and ribosome profiling, we determined the mRNAs encoding proteins for oxidative phosphorylation complexes had increased relative translation efficiency. Indeed, vaccinia virus infection increased the activity of oxidative phosphorylation. Inhibition of oxidative phosphorylation function suppressed vaccinia virus replication significantly. Moreover, the mRNAs of oxidative phosphorylation have short 5'-UTRs with a less complex secondary structure that could confer oxidative phosphorylation mRNAs a translational advantage in vaccinia virus-infected cells during host shutoff. Together, these studies advanced our understanding of how vaccinia virus selectively synthesizes viral and cellular proteins for efficient viral replication during host shutoff. The findings may facilitate the development of novel anti-poxvirus strategies and the improvement of poxviruses as vaccine vectors and anti-cancer agents.
Download or read book Mechanisms Of Viral Toxicity In Animal Cells written by Luis Carrasco and published by CRC Press. This book was released on 2018-01-18 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book is intended to give an account of the state of the art on how animal viruses induce cytotoxic effects in cells.
Download or read book Assessment of Future Scientific Needs for Live Variola Virus written by Institute of Medicine and published by National Academies Press. This book was released on 1999-04-30 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1980, the World Health Organization (WHO) officially declared that smallpox had been eradicated. In 1986, WHO's international Ad Hoc Committee on Orthopox Virus Infections unanimously recommended destruction of the two remaining official stocks of variola virus, one at the Centers for Disease Control and Prevention and the other at the VECTOR laboratory in Siberia. In June 1999, WHO decided to delay the destruction of these stocks. Informing that decision was Assessment of Future Scientific Needs for Variola Virus, which examines: Whether the sequenced variola genome, vaccinia, and monkey pox virus are adequate for future research or whether the live variola virus itself is needed to assist in the development of antiviral therapies. What further benefits, if any, would likely be gained through the use of variola in research and development efforts related to agent detection, diagnosis, prevention, and treatment. What unique potential benefits, if any, the study of variola would have in increasing our fundamental understanding of the biology, host-agent interactions, pathogenesis, and immune mechanisms of viral diseases.
Download or read book Viral Cytopathology written by Heinz Fraenkel-Conrat and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time seems ripe for a critical compendium of that segment of the biological universe we call viruses. Virology, as a science, having passed only recently through its descriptive phase of naming and numbering, has probably reached that stage at which relatively few new-truly new-viruses will be discovered. Triggered by the intellectual probes and techniques of molecular biology, genetics, bio chemical cytology, and high resolution microscopy and spectroscopy, the field has experienced a genuine information explosion. Few serious attempts have been made to chronicle these events. This comprehensive series, which will comprise some 6000 pages in a total of 19 volumes, represents a commitment by a large group of active investigators to analyze, digest, and expostulate on the great mass of data relating to viruses, much of which is now amorphous and disjointed, and scattered throughout a wide literature. In this way, we hope to place the entire field in perspective, and to develop an invaluable reference and sourcebook for researchers and students at all levels. This series is designed as a continuum that can be entered any where, but which also provides a logical progression of developing facts and integrated concepts.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Herpesviruses written by Ann Arvin and published by Cambridge University Press. This book was released on 2007-08-16 with total page 1325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive account of the human herpesviruses provides an encyclopedic overview of their basic virology and clinical manifestations. This group of viruses includes human simplex type 1 and 2, Epstein–Barr virus, Kaposi's Sarcoma-associated herpesvirus, cytomegalovirus, HHV6A, 6B and 7, and varicella-zoster virus. The viral diseases and cancers they cause are significant and often recurrent. Their prevalence in the developed world accounts for a major burden of disease, and as a result there is a great deal of research into the pathophysiology of infection and immunobiology. Another important area covered within this volume concerns antiviral therapy and the development of vaccines. All these aspects are covered in depth, both scientifically and in terms of clinical guidelines for patient care. The text is illustrated generously throughout and is fully referenced to the latest research and developments.
Download or read book Recombinant Poxviruses written by Matthew M. Binns and published by CRC Press. This book was released on 1992-05-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recombinant Poxviruses provides a comprehensive examination of poxviruses with an emphasis on the potential of these viruses as new vaccines. The book considers a wide range of issues involved in producing new genetically engineered live vaccines, such as efficacy, safety, stability, cost, host range, immune response, immunization route, use of multivalent vaccines, and need for revaccination. The opening chapter describes the origin of vaccinia virus, its use to eradicate smallpox, and the pathogenesis of poxvirus infections. Subsequent chapters examine the molecular biology of poxviruses, methods of constructing vaccinia virus recombinants, and applications; the use and immune responses induced by poxvirus recombinants as live vaccines; and the important issues of the safety and immunogenicity of vaccinia virus. The book's final two chapters report the progress that has been made developing avipoxviruses and parapoxviruses as candidate recombinant vaccines. Recombinant Poxviruses will be a welcome addition to the bookshelves of virologists, microbiologists, infectious disease specialists, and veterinarians.
Download or read book Plant Virology written by Roger Hull and published by Academic Press. This book was released on 2013-10-31 with total page 1119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seminal text Plant Virology is now in its fifth edition. It has been 10 years since the publication of the fourth edition, during which there has been an explosion of conceptual and factual advances. The fifth edition of Plant Virology updates and revises many details of the previous edition while retaining the important earlier results that constitute the field's conceptual foundation. Revamped art, along with fully updated references and increased focus on molecular biology, transgenic resistance, aphid transmission, and new, cutting-edge topics, bring the volume up to date and maintain its value as an essential reference for researchers and students in the field. - Thumbnail sketches of each genera and family groups - Genome maps of all genera for which they are known - Genetic engineered resistance strategies for virus disease control - Latest understanding of virus interactions with plants, including gene silencing - Interactions between viruses and insect, fungal, and nematode vectors - Contains over 300 full-color illustrations
Download or read book Comprehensive Virology written by Heinz Fraenkel-Conrat and published by . This book was released on 1984 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluorescent and Luminescent Probes for Biological Activity written by W. T. Mason and published by Elsevier. This book was released on 1999-04-16 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fluorescent and luminescent probes to measure biological function has increased dramatically since publication of the First Edition due to their improved speed, safety, and power of analytical approach. This eagerly awaited Second Edition, also edited by Bill Mason, contains 19 new chapters and over two thirds new material, and is a must for all life scientists using optical probes.The contents include discussion of new optical methodologies for detection of proteins, DNA and other molecules, as well as probes for ions, receptors, cellular components, and gene expression. Emerging and advanced technologies for probe detection such as confocal laser scanning microscopy are also covered. This book will be essential for those embarking on work in the field or using new methods to enhance their research.TOPICS COVERED:* Single and multiphoton confocal microscopy* Applications of green fluorescent protein and chemiluminescent reporters to gene expression studies* Applications of new optical probes for imaging proteins in gels * Probes and detection technologies for imaging membrane potential in live cells* Use of optical probes to detect microorganisms* Raman and confocal raman microspectroscopy* Fluorescence lifetime imaging microscopy* Digital CCD cameras and their application in biological microscopy
Download or read book Prokaryotic and Eukaryotic Heat Shock Proteins in Infectious Disease written by A. Graham Pockley and published by Springer Science & Business Media. This book was released on 2009-11-10 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prokaryotic and Eukaryotic Heat Shock Proteins in Infectious Disease provides the most current review of the literature relating to the role and influence of heat shock (stress) proteins on the establishment, progression and resolution of infectious disease. Written by leaders in the field of heat shock proteins (HSP) and their biological and immunological properties, the contributors provide a fascinating insight into the complex relationship between, and the involvement of prokaryotic and eukaryotic HSP in disease states. It has been known for some considerable time that heat shock proteins from prokaryotic organisms are immunodominant molecules that are intimately involved in the induction of potential protective inflammatory responses, and this aspect of HSP biology is updated herein. In addition to regulating heat shock protein gene expression, the transcription factor HSF1 also appears to play an important role in regulating immune responses to infection. Heat shock proteins are now known to influence infectious disease processes in a number of diverse ways: they are involved in the propagation of prions, the replication and morphogenesis of viruses, and the resistance of parasites to chemotherapy. These proteins also appear to be important mediators of bacteria-host interactions and inflammation, the latter via interactions with cell surface molecules and structures such as Toll-like receptors and lipid rafts. Heat shock proteins can be expressed on the surface of infected cells, and this is likely to provide a target for the innate immune response. Elevated levels of circulating HSP are present in infectious diseases and these proteins might therefore regulate inflammatory responses to pathogenic challenge on a systemic basis. Heat shock proteins are also implicated in the impact of genital tract infections on the reproductive outcome, as well as in the local and systemic consequences of periodontal disease. Fever-range temperatures can induce the expression of heat shock proteins, and the final chapter in the book examines the influence of fever-range hyperthermia on a variety of cells and the organization of plasma membranes. This book is an essential read for graduates and postgraduates in Biology, pro- and eukaryotic Biochemistry, Immunology, Microbiology, Inflammatory and Infectious Disease, and Pathology.
Download or read book Encyclopedia of Virology written by Allan Granoff and published by Academic Press. This book was released on 1999-09-03 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reference source of current virological knowledge. It is also the first to bring together all aspects of the subject for a wide variety of readers. Unique in its use of concise 'mini-review' articles, the mate rial covers biological, molecular, and medical topics concerning viruses in animals, plants, bacteria, and insects. More general articles focus on the effects of viruses on the immune system, the role of viruses in disease, oncology, gene therapy, and evolution, plus a wide range of related topics.
Download or read book Emerging and Reemerging Viral Pathogens written by Moulay Mustapha Ennaji and published by Academic Press. This book was released on 2019-09-14 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging and Reemerging Viral Pathogens: Applied Virology Approaches Related to Human, Animal and Environmental Pathogens, Volume Two presents new research information on viruses and their impact on the scientific community. It provides a reference book on certain viruses in humans, animals and vegetal, along with a comprehensive discussion on interspecies interactions. The book then looks at the drug, vaccine and bioinformatical strategies that can be used against these viruses, giving the reader a clear understanding of transmission. The book's end goal is to create awareness that the appearance of newly transmissible pathogens is a global risk that requires shared/adoptable policies for prevention and control. Covers most emerging viral disease in humans, animals and plants Provides the most advanced tools and techniques in molecular virology and the modeling of viruses Creates awareness that the appearance of new transmissible pathogens is a global risk Highlights the need to adopt shared policies for the prevention and control of infectious diseases
Download or read book Viruses and Human Disease written by Ellen G. Strauss and published by Elsevier. This book was released on 2007-09-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and updated, the new edition of this groundbreaking text integrates basic virology with pathophysiological conditions to examine the connection between virology and human disease. Most virology textbooks focus on the molecular biology involved without adequate reference to physiology. This text focuses on viruses that infect humans, domestic animals and vertebrates and is based on extensive course notes from James Strauss' virology class at the California Institute of Technology taught for over 30 years. Expertly depicting in color the molecular structure and replication of each virus, it provides an excellent overview for students and professionals interested in viruses as agents of human disease. - Includes over 30% new material - virtually all of the figures and tables have been redrawn to include the latest information and the text has been extensively rewritten to include the most up-to-date information - Includes a new chapter on emerging and reemerging viral diseases such as avian flu, SARS, the spread of West Nile virus across America, and the continuing spread of Nipah virus in Southeast Asia - Further reading sections at the end of each chapter make it easy find key references - World maps depicting the current distribution of existing and newly emerging viruses are also incorporated into the text
Download or read book Ranaviruses written by Matthew J. Gray and published by Springer. This book was released on 2015-05-01 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book on ranaviruses. Ranaviruses are double-stranded DNA viruses that cause hemorrhagic disease in amphibians, reptiles, and fish. They have caused mass die-offs of ectothermic vertebrates in wild and captive populations around the globe. There is evidence that this pathogen is emerging and responsible for population declines in certain locations. Considering that amphibians and freshwater turtles are suitable hosts and the most imperiled vertebrate taxa in the world, ranaviruses can have significant impacts on biodiversity and ecosystem function. Additionally, many fish that are raised in aquaculture facilities and traded internationally are suitable hosts; thus, the potential economic impact of ranaviruses is significant. Ranaviruses also serve as a model for replication and gene function of large double-stranded DNA viruses. There is an urgent need to assemble the contemporary information on ranaviruses and provide guidance on how to assess their threats in populations. Through the Global Ranavirus Consortium, 24 experts from six countries were organize to write this volume, the first book on ranaviruses. The book begins with a discussion on the global extent of ranaviruses, case histories of infection and disease in ectothermic vertebrates, and current phylogeny. Basic principles of ranavirus ecology and evolution are covered next, with a focus on host-pathogen interactions and how the virus emerges in its environment. There are two chapters that will discuss the molecular biology of ranaviruses, host response to infection, and the genes responsible for immune system evasion. One chapter establishes standards for testing for infection and diagnosing ranaviral disease. The book ends by providing guidance on how to design ranavirus surveillance studies and analyze data to determine risk, and discussing the role of the Global Ranavirus Consortium in organizing research and outreach activities.
Download or read book Viral Polymerases written by Satya Prakash Gupta and published by Academic Press. This book was released on 2018-10-29 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viral Polymerases: Structures, Functions and Roles as Antiviral Drug Targets presents in-depth study information on the structure and functions of polymerases and their roles in the lifecycle of viruses, and as drug targets. Viral polymerases constitute a vital component in the lifecycle of many viruses, such as human immunodeficiency virus (HIV), hepatitis viruses, influenza virus, and several others. They are essentially required for the replication of viruses. Thus, the polymerases that can be found in viruses (called viral polymerases) represent favorable targets for the design and development of antiviral drugs. - Provides comprehensive, state-of-the-art coverage on virus infections, the virus lifecycle, and mechanisms of polymerase inhibition - Analyzes the structure-activity relationships of inhibitors of each viral polymerase - Presents a consistent and comprehensive coverage of all aspects of viral polymerases, including structure, function and their role as antiviral drug targets
