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Virus Host Cell Genetic Material Transport
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Book Synopsis Virus Host Cell Genetic Material Transport by : William E. Schiesser
Download or read book Virus Host Cell Genetic Material Transport written by William E. Schiesser and published by Springer Nature. This book was released on 2021-12-01 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reproduction and spread of a virus during an epidemic proceeds when the virus attaches to a host cell and viral genetic material (VGM) (protein, DNA, RNA) enters the cell, then replicates, and perhaps mutates, in the cell. The movement of the VGM across the host cell outer membrane and within the host cell is a spatiotemporal dynamic process that is modeled in this book as a system of ordinary and partial differential equations (ODE/PDEs). The movement of the virus proteins through the cell membrane is modeled as a diffusion process expressed by the diffusion PDE (Fick’s second law). Within the cell, the time variation of the VGM is modeled as ODEs. The evolution of the dependent variables is computed by the numerical integration of the ODE/PDEs starting from zero initial conditions (ICs). The departure of the dependent variables from zero is in response to the virus protein concentration at the outer membrane surface (the point at which the virus binds to the host cell). The numerical integration of the ODE/PDEs is performed with routines coded (programmed) in R, a quality, open-source scientific computing system that is readily available from the Internet. Formal mathematics is minimized, e.g., no theorems and proofs. Rather, the presentation is through detailed examples that the reader/researcher/analyst can execute on modest computers. The ODE/PDE dependent variables are displayed graphically with basic R plotting utilities. The R routines are available from a download link so that the example models can be executed without having to first study numerical methods and computer coding. The routines can then be applied to variations and extensions of the ODE/PDE model, such as changes in the parameters and the form of the model equations.
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:
Book Synopsis Essential Human Virology by : Jennifer Louten
Download or read book Essential Human Virology written by Jennifer Louten and published by Academic Press. This book was released on 2022-05-28 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential Human Virology, Second Edition focuses on the structure and classification of viruses, virus transmission and virus replication strategies based upon type of viral nucleic acid. Several chapters focus on notable and recognizable viruses and the diseases caused by them, including influenza, HIV, hepatitis viruses, poliovirus, herpesviruses and emerging and dangerous viruses. Additionally, how viruses cause disease (pathogenesis) is highlighted, along with discussions on immune response to viruses, vaccines, anti-viral drugs, gene therapy, the beneficial uses of viruses, research laboratory assays and viral diagnosis assays. Fully revised and updated with new chapters on coronaviruses, nonliving infectious agents, and notable non-human viruses, the book provides students with a solid foundation in virology. - Focuses on human diseases and the cellular pathology that viruses cause - Highlights current and cutting-edge technology and associated issues - Presents real case studies and current news highlights in each chapter - Features dynamic illustrations, chapter assessment questions, key terms, and a summary of concepts, as well as an instructor website with lecture slides, a test bank and recommended activities - Updated and revised, with new chapters on coronaviruses, nonliving infectious agents, and notable non-human viruses
Book Synopsis Viral Entry into Host Cells by : Stefan Pöhlmann
Download or read book Viral Entry into Host Cells written by Stefan Pöhlmann and published by Springer Science & Business Media. This book was released on 2013-07-24 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a virus to invade a host cell it needs to penetrate the physical barrier imposed by the plasma membrane. Viruses have evolved specialized surface proteins to meet this challenge. These proteins facilitate delivery of the viral genetic information into the host cell by either fusing the viral envelope with a host cell membrane or by forming membrane pores. Membrane fusion and pore formation critically depend on the engagement of host cell receptors and receptor choice is a key determinant of viral tropism. The multi-faceted interplay between viral and cellular factors during virus entry is a fascinating field of study, which can provide important insight into viral pathogenesis and define new targets for intervention. This book provides a comprehensive overview of this exciting field of research.
Book Synopsis Viruses and Man: A History of Interactions by : Milton W. Taylor
Download or read book Viruses and Man: A History of Interactions written by Milton W. Taylor and published by Springer. This book was released on 2014-07-21 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Milton Taylor, Indiana University, offers an easy-to-read and fascinating text describing the impact of viruses on human society. The book starts with an analysis of the profound effect that viral epidemics had on world history resulting in demographic upheavals by destroying total populations. It also provides a brief history of virology and immunology. Furthermore, the use of viruses for the treatment of cancer (viral oncolysis or virotherapy) and bacterial diseases (phage therapy) and as vectors in gene therapy is discussed in detail. Several chapters focus on viral diseases such as smallpox, influenza, polio, hepatitis and their control, as well as on HIV and AIDS and on some emerging viruses with an interesting story attached to their discovery or vaccine development. The book closes with a chapter on biological weapons. It will serve as an invaluable source of information for beginners in the field of virology as well as for experienced virologists, other academics, students, and readers without prior knowledge of virology or molecular biology.
Book Synopsis Viral Interactions with the Nucleus by : Erin Joanne Walker
Download or read book Viral Interactions with the Nucleus written by Erin Joanne Walker and published by Frontiers Media SA. This book was released on 2017-08-16 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viruses cause numerous medically important diseases, affecting developing, developed, rich and poor alike. The diseases vary in severity, including chickenpox, smallpox, influenza, shingles, herpes, rabies, polio, Ebola, hanta fever, AIDS and the common cold, amongst others. Regardless of the type of tissue or organ affected, all viruses follow the same basic steps to infect host cells. Once in contact with host cells viruses release their genetic material into the cell followed by genome replication, production of viral proteins, assembly of the virus particle and egress from the infected cell. Viruses disrupt normal host cell processes in order to facilitate their own replication/assembly by re-directing cellular machinery for viral transcription, translation, assembly, release and by inhibiting antiviral responses. Regulated nuclear transport of macromolecules through the nuclear pore complex, the only means of transport across the nuclear membrane, is essential for normal cell function and an effective antiviral response. Many viruses disrupt or exploit the nucleocytoplasmic trafficking pathways in host cells. Cytoplasmic viruses exploit the host cell nucleocytoplasmic trafficking machinery to access nuclear functions and/or disrupt nuclear transport, while several DNA viruses use the trafficking pathways to enable export of their components into the cytoplasm; yet others complete their assembly within the nucleus and use nuclear export pathways to access the cytoplasm. Indeed, the many and varied interactions of viruses and viral proteins with nucleocytoplasmic trafficking components have been invaluable in pathway discovery. Importantly, mounting evidence suggests that these interactions play essential roles in virus replication/assembly and hence may be key to understanding pathophysiology of viral diseases. This Frontiers Research Topic is dedicated to the importance of nucleocytoplasmic trafficking to viral pathogenesis.
Book Synopsis Concepts of Biology by : Samantha Fowler
Download or read book Concepts of Biology written by Samantha Fowler and published by . This book was released on 2023-05-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.
Book Synopsis Structure and Physics of Viruses by : Mauricio G. Mateu
Download or read book Structure and Physics of Viruses written by Mauricio G. Mateu and published by Springer Science & Business Media. This book was released on 2013-06-04 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contemplates the structure, dynamics and physics of virus particles: From the moment they come into existence by self-assembly from viral components produced in the infected cell, through their extracellular stage, until they recognise and infect a new host cell and cease to exist by losing their physical integrity to start a new infectious cycle. (Bio)physical techniques used to study the structure of virus particles and components, and some applications of structure-based studies of viruses are also contemplated. This book is aimed first at M.Sc. students, Ph.D. students and postdoctoral researchers with a university degree in biology, chemistry, physics or related scientific disciplines who share an interest or are actually working on viruses. We have aimed also at providing an updated account of many important concepts, techniques, studies and applications in structural and physical virology for established scientists working on viruses, irrespective of their physical, chemical or biological background and their field of expertise. We have not attempted to provide a collection of for-experts-only reviews focused mainly on the latest research in specific topics; we have not generally assumed that the reader knows all of the jargon and all but the most recent and advanced results in each topic dealt with in this book. In short, we have attempted to write a book basic enough to be useful to M.Sc and Ph.D. students, as well as advanced and current enough to be useful to senior scientists with an interest in Structural and/or Physical Virology.
Book Synopsis Biology for AP ® Courses by : Julianne Zedalis
Download or read book Biology for AP ® Courses written by Julianne Zedalis and published by . This book was released on 2017-10-16 with total page 1923 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences.
Book Synopsis Viral Vectors by : Michael G. Kaplitt
Download or read book Viral Vectors written by Michael G. Kaplitt and published by Academic Press. This book was released on 1995-08-14 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic manipulation of the adult mammalian nervous system is one of the most exciting areas in contemporary neurobiology. The explosive growth of this field has been facilitated by harnessing the power of viruses to transfer genetic material into mammalian cells.Viral Vectors: Gene Therapy and Neuroscience Applications represents the first comprehensive review of viral vector applications to the nervous system by leaders in virology, molecular neurobiology, neuroanatomy, and developmental neurobiology. It serves both as a source of fundamental information for those newly interested in viral vectors and as a compilation of state-of-the-art technologies and applications for more experienced researchers.This work provides expert background information on viral systems, and the broad range of applications will help readers appreciate the current and future impact of viral vectors in both clinical and basic neuroscience.
Download or read book Virus Structure written by and published by Elsevier. This book was released on 2003-10-02 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virus Structure covers the full spectrum of modern structural virology. Its goal is to describe the means for defining moderate to high resolution structures and the basic principles that have emerged from these studies. Among the topics covered are Hybrid Vigor, Structural Folds of Viral Proteins, Virus Particle Dynamics, Viral Gemone Organization, Enveloped Viruses and Large Viruses. - Covers viral assembly using heterologous expression systems and cell extracts - Discusses molecular mechanisms in bacteriophage T7 procapsid assembly, maturation and DNA containment - Includes information on structural studies on antibody/virus complexes
Book Synopsis The Great Influenza by : John M. Barry
Download or read book The Great Influenza written by John M. Barry and published by Penguin. This book was released on 2005-10-04 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: #1 New York Times bestseller “Barry will teach you almost everything you need to know about one of the deadliest outbreaks in human history.”—Bill Gates "Monumental... an authoritative and disturbing morality tale."—Chicago Tribune The strongest weapon against pandemic is the truth. Read why in the definitive account of the 1918 Flu Epidemic. Magisterial in its breadth of perspective and depth of research, The Great Influenza provides us with a precise and sobering model as we confront the epidemics looming on our own horizon. As Barry concludes, "The final lesson of 1918, a simple one yet one most difficult to execute, is that...those in authority must retain the public's trust. The way to do that is to distort nothing, to put the best face on nothing, to try to manipulate no one. Lincoln said that first, and best. A leader must make whatever horror exists concrete. Only then will people be able to break it apart." At the height of World War I, history’s most lethal influenza virus erupted in an army camp in Kansas, moved east with American troops, then exploded, killing as many as 100 million people worldwide. It killed more people in twenty-four months than AIDS killed in twenty-four years, more in a year than the Black Death killed in a century. But this was not the Middle Ages, and 1918 marked the first collision of science and epidemic disease.
Book Synopsis Assembly of Enveloped RNA Viruses by : Monique Dubois-Dalcq
Download or read book Assembly of Enveloped RNA Viruses written by Monique Dubois-Dalcq and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of critical reviews about a diverse group of virus families with two features in common: the stable repository of genetic information in each virus is RNA, and each virus modifies and appropriates a particular patch of the eukaryotic cell membrane system to complete its structure. The reviews take the reader from the level of virus genome structure and expression through the quaternary interactions between virus-specified elements and cellular components that cooperate to produce virus particles. There are spectacular illustrations in this volume, but it is much more than a picture gallery. Reading widely in this book can be an effective antidote to overspecialization: in these pages, you are likely to learn much about viruses and about cells that you didn't know before; you'll discover illuminating parallels between diverse virus families; you'll come away with a sharpened awareness of important things that are still to be learned. Memphis, Tenn. , Summer 1984 David W. Kingsbury Preface This book was written at the suggestion of Dr. David W. Kingsbury made at a work shop on viruses organized by the Multiple Sclerosis Society in Aspen, Colorado, U. S. A. , three years ago. Originally, we had thought to focus on the morphological aspects of viral assembly. Later, during our discussions on the process of budding of enveloped RNA viruses, it became evident that we should include biochemical data in our review and correlate them with the structural aspects of virus maturation.
Book Synopsis The Molecular Basis of Viral Replication by : R. Bercoff
Download or read book The Molecular Basis of Viral Replication written by R. Bercoff and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: the discovery of the "splicing" of the gene transcripts, the list would include the whole molecular genetics of the lambda bacteriophage, the notions of "promotor," "repressor," and "integration," the discovery of the reverse flow of genetic information, the very existence of oncogenes, the S'-terminal "cap" struc ture of eukaryotic mRNAs, ... Electronmicroscopy, ultracentrifugation and tissue culture were the landmarks on the way of the young science. During the past few years, however, a major (and not so silent) revolution took place: recombinant DNA technology with all its might entered in our laboratories, and restriction mapping of cloned genomes and sequencing gels have replaced plaque counting and sucrose gradients. The new techniques have made it possible to "dissect" the entire genome of a virus at the molecular level, and studies that would have been dreamt of just in the mid-seventies became the everyday experiments of our days. With new insight into the structure of viral genomes, and a deeper understanding of the mechanisms that regulate their expression, our view of viruses was bound to change: this volume bears witness to this impressive advance.
Book Synopsis Replication of Viral and Cellular Genomes by : Yechiel Becker
Download or read book Replication of Viral and Cellular Genomes written by Yechiel Becker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biosynthesis of cellular and viral DNA and RNA has been a major topic in molecular biology and biochemistry. The studies by Arthur Kornberg and his colleagues on the in-vitro synthesis of DNA have opened new avenues to understanding the processes controlling the duplication of the genetic information encoded in the DNA and RNA of bacterial and mammalian cells. Viral nucleic acids are replicated in infected cells (bacterial, plant, and animal) by virus coded enzymes with or without the involvement of proteins and enzymes coded by the host cells. The ability of the virus to replicate its genome within a relatively short period in the infected cell makes it an excellent biological tool for studying the molecular events in nucleic acid replication. Indeed, the identification of a number of virus-coded proteins that participate in the biosynthesis of X174 and SV40 DNA has led to the construction of in-vitro systems for the study of nucleic acid biosynthesis. Similarly, studies on the replication of other phage, animal and plant viruses have provided an insight into the nucleic acid sequences from which DNA synthesis is initiated, as well as the proteins and enzymes that regulate the catalyse biosynthetic processes. Investi gation of the molecular processes involved in the replication of cellular and mitochondrial genomes has gained momentum from the rapid developments in the analyses of viral nucleic acid biosynthesis.
Book Synopsis Development of Tools to Study how Virus-host Cell Interactions Influence Infection Spread by : Bahar Inankur
Download or read book Development of Tools to Study how Virus-host Cell Interactions Influence Infection Spread written by Bahar Inankur and published by . This book was released on 2015 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viruses cause a variety of human diseases including AIDS, the common cold, hepatitis, and cancer. During a virus infection, the various processes and interactions of the virus, host, and environment form a complex and dynamic system with a heterogeneous range of outcomes. While there has been a strong focus on investigation of molecular mechanisms of virus-host cell interactions within a single-infection cycle and clinical studies that entail multiple infection cycles, relatively less has been done to link how the interactions within a single-infection cycle are reflected over multiple rounds of infection. In this context, the work in this thesis focuses on the development of experimental and computational quantitative tools to study the factors that influence infection spread from cell to cell in vitro. The potential of an infection to spread is determined mainly by the ability of the infecting virus to effectively enter the host cell, replicate efficiently, and evade or suppress any host restrictions. Conversely, host cell inhibition of the infection relies on the ability to detect the invading virus, mount a response that typically includes the activation of genes that have either direct antiviral roles or signal to warn other cells of the infection, and avoid the suppressive activity of the virus that seeks to limit these responses. In order to investigate this dynamic interaction between virus and host, we used vesicular stomatitis virus (VSV), a well characterized model virus. We first designed microfluidic channels to study virus spread under stagnant fluid environments. In parallel, to quantify the effects of antiviral responses we developed an antiviral activity assay that measures the overall functional ability of secreted antiviral molecules to inhibit infections. Moreover, using a novel dual color fluorescent reporter system to detect viral replication and cellular antiviral activity; we performed real-time fluorescent microscopy imaging studies of infection spread within cell culture monolayers in conventional well plates and microchannels. Quantitative analysis of spatial and temporal features of spreading infections in these two different cultures, together with the use of activity assay revealed the dose and duration dependency of antiviral activation prior to infection that ultimately determined the spread or arrest of the infection. On a separate project, using the image processing and analysis tools, we quantified the infection spread behavior of VSV in the presence of a virus mutant that lacked essential genes for growth, but was able to divert the viral proteins produced by an infectious virus to its own replication. The detailed analysis and modeling of the diverse interfered patterns revealed the increase in the diversity of spread patterns with increasing mutant virus input. The tools developed here can aid the in vitro testing of antiviral drugs by helping assess how the treatments influence the interactions between virus and the host cells over multiple rounds of infection. Further improving the quantitative methods developed using VSV, finally we focused on a more clinically relevant virus, rhinovirus (RV), which contributes to a variety of respiratory illnesses. Aiming to link the genetic diversity observed in different RV strains with differences in the severity of infections observed clinically, we developed single-cell image analysis workflows. The workflows enabled tracking of individual cells and extraction of fluorescent intensities from different cellular compartments in a dual color fluorescent transfection assay. Using these tools we quantified the RVs’ ability to disrupt nuclear transport pathways over time. Comparison of different strains revealed the differential disruption of nucleocytoplasmic transport, a key mechanism for intracellular antiviral signaling. Extending these studies to probe spatial and temporal dynamics of spreading RV infections, we quantified the spread patterns of a recombinant fluorescent RV strain and extracted parameters that can be further used for characterizing the various features of the spread phenotypes of different RV strains. The multi-cycle infection analysis of various RV strains may help gain insights into varying degrees of illness severities observed for infections of different RV strains. Overall, this work demonstrates the potential of these new experimental and computational tools for enabling a more quantitative approach to elucidating the dynamic and complex mechanisms of virus-host interactions.
Book Synopsis The Molecular Biology of Viruses by : John Colter
Download or read book The Molecular Biology of Viruses written by John Colter and published by Elsevier. This book was released on 2012-12-02 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Molecular Biology of Viruses is a collection of manuscripts presented at the Third Annual International Symposium of the Molecular Biology of Viruses, held in the University of Alberta, Canada on June 27-30, 1966, sponsored by the Faculty of Medicine of the University of Alberta. This book is organized into eight parts encompassing 36 chapters that emphasize the biosynthetic steps involved in polymer duplication. The first two parts explore the specialized processes of the cycle of virulent and temperate bacteriophage multiplication. These parts also deal with the production, regulation of development, and selectivity of these bacteriophages. The subsequent two parts look into the heterozygosity, mutation, structure, function, and mode of infection of single-stranded DNA and RNA bacteriophages. The discussions then shift to the biological and physicochemical aspects, biosynthesis, translation, genetics, and replication of mammalian DNA and RNA viruses. The concluding parts describe the homology, interaction, functions, mechanism of transformation, metabolism, and carcinogenic activity of oncogenic viruses. This book is of great benefit to biochemists, biophysicists, geneticists, microbiologists, and virologists.
