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Recent Advances In Drosophila Cellular And Humoral Innate Immunity
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Book Synopsis Recent Advances in Drosophila Cellular and Humoral Innate Immunity by : Susanna Valanne
Download or read book Recent Advances in Drosophila Cellular and Humoral Innate Immunity written by Susanna Valanne and published by Frontiers Media SA. This book was released on 2020-12-10 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Book Synopsis Community Series in Recent Advances in Drosophila Cellular and Humoral Innate Immunity, volume II by : Susanna Valanne
Download or read book Community Series in Recent Advances in Drosophila Cellular and Humoral Innate Immunity, volume II written by Susanna Valanne and published by Frontiers Media SA. This book was released on 2024-06-26 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fruit fly Drosophila melanogaster is an established tool to study mechanisms of innate immunity. Drosophila flies and larvae launch elegant humoral and cellular innate immune responses against bacteria, viruses, fungi and parasites. The humoral immune response is based on microbial recognition primarily by peptidoglycan recognition proteins leading to the production of antimicrobial peptides (AMPs). In the past few decades, Drosophilists have dissected how flies react to systemic bacterial and fungal infections at the molecular level and shown how these mechanisms are conserved from human to man. Fly humoral immune response is mainly mediated by two evolutionarily conserved NF-κB signaling pathways, the Toll and the Immune deficiency (Imd) pathways. The discovery of the Toll receptor as a key regulator of immune response, first in cultured Drosophila cells and then in Drosophila in vivo, formed the basis of the Toll-Like Receptor (TLR) research in humans and mammals. More recently, this field has broadened considerably, including e.g. the antimicrobial responses taking place in the gut. Another interesting aspect related to innate immunity is the antiviral immune mechanisms found in Drosophila. Best understood are the mechanisms based on RNAi, primarily against RNA virus infections. More recently, the evolutionarily conserved molecule STING has been shown to integrate responses against both viruses and bacteria.
Book Synopsis Understanding the Regulation of Innate Immune Mechanisms and Its Relevance in Diseases Using Drosophila Melanogaster by : Pooja Kadaba Ranganath
Download or read book Understanding the Regulation of Innate Immune Mechanisms and Its Relevance in Diseases Using Drosophila Melanogaster written by Pooja Kadaba Ranganath and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drosophila melanogaster is an excellent model organism to study conserved innate immune mechanisms. D. melanogaster utilizes both humoral and cellular immune responses to combat fungal, bacterial and parasitic pathogens; The cellular immune response targets parasites and parasitoid wasps are a major parasite of D. melanogaster. Fly larvae are commonly infected by parasitoid wasps and in response, mount a robust cellular immune response against the parasitoid egg. Numerous signaling pathways like JNK and JAK-STAT have been shown to play a role in the immune response against parasitoid wasps and have a conserved role in human immunity. However, the regulation of the conserved signaling pathways controlling innate immunity is not completely understood. Work done in Chapter I aims to better understand the role of CR44125, a long non-coding RNA as a novel regulator of Drosophila cellular immune response. Our findings suggest that CR44125 is involved in immune cell differentiation process by regulating the activity of the Jun N-terminal kinase (JNK) signaling pathway. Cellular immune mechanisms have evolved to coordinate various responses and maintain a balanced immune outcome. This involves the immune cells to maintain self-tolerance and exert immune response in a timely and regulated manner. Innate immune mediated self-tolerance mechanisms and the underlying genetic basis associated with the maintenance of this system remain largely unexplored and work done in Chapter II can provide insight into the transcriptional and physiological changes underlying self-tolerance and autoimmunity. Our findings suggest that Rel/NFÎðB transcriptional activity is associated with pro-inflammatory signaling in Drosophila, during loss of self-tolerance reactions. Thus, in general although immune cells via various innate immune mechanisms recognize cues from external pathogens to recognizing altered self like aberrant tissues or cancer cells, the functional role of the immune system and its underlying mechanisms in regulating tumorigenesis are poorly investigated. Our study in Chapter III utilizes the established Drosophila melanogaster model of tumor pathogenesis was used to study the impacts of innate immune response on tumor progression and metastasis. Recent studies have also shown that infections can also modulate tumorigenesis and thus, we use Drosophila-parasitoid as a host-parasite system to particularly dissect the role of infection in cancer pathogenesis. Our findings identified that G1Fl infection reduces both primary and secondary tumor growth and the model can further be used to characterize the mechanism by which an infection modifies tumorigenesis.
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 Origin and Evolution of the Vertebrate Immune System by : L. Du Pasquier
Download or read book Origin and Evolution of the Vertebrate Immune System written by L. Du Pasquier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The comparative approach to immunology can be traced to the era of Pasteur and Metchnikov in which observations regarding foreign recognition in invertebrates was a factor in the develop ment of the principal concepts that created the foundation of what now is the broad field of immunology. With each major experimental and conceptual breakthrough, the classical, albeit essential, question has been asked "are the immune systems of phylogenetically primitive vertebrates and invertebrates similar to that of mammals?" Somewhat surprisingly for the jawed verte brates, the general answer has been a qualified form of "yes", whereas for agnathans and invertebrate phyla it has been "no" so far. The apparent abruptness in the appearance of the immune system of vertebrates is linked to the introduction of the somatic generation of the diversity of its antigen specific receptors. Therefore the questions regarding the origin and evolution of the specific immune system revolve around this phenomenon. With respect to the origin of the system (aside from the or igin of the rearranging machinery itself, the study of which is still in its infancy) one can ask questions about the cellular and mo lecular contexts in which the mechanism was introduced.
Book Synopsis Proliferative Signals Regulate Hemocyte Development and Intestinal Immunity in Drosophila Melanogaster by : Brendon David Parsons
Download or read book Proliferative Signals Regulate Hemocyte Development and Intestinal Immunity in Drosophila Melanogaster written by Brendon David Parsons and published by . This book was released on 2014 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: The innate immune system is an ancient line of resistance against intrusive microbial threats. This system integrates cellular, humoral, and barrier defenses to generate a protective immune response. These divisions are indispensable and conserved between Drosophila and mammals. Hemocytes are the immune cells of Drosophila, and they resemble vertebrate myeloid lineages in their ontogeny and function. Similar to tissue macrophages, the Drosophila hemocytes have roles in development, tissue homeostasis and defense against pathogens. Conserved constituents of the platelet-derived growth factor (PDGF) and vascular endothelial growth factor (VEGF) receptor tyrosine kinase (RTK) families have defined roles in these processes. Signaling through the PDGF/VEGF-related receptor (Pvr) mediates the establishment and dispersal of hemocytes during embryogenesis. The Pvr ligands, Pvf2 and Pvf3 are implicated in hemocyte cellular proliferation, size and chemotactic guidance of hemocyte. However, the precise role that Pvf2 and Pvf3 play in hemocytes is unclear due to the lack of available mutants. To determine Pvf functions in vivo, I generated a genomic deletion that simultaneously disrupts Pvf2 and Pvf3. From my studies, I identified contributions of Pvf2 and Pvf3 to the trophic maintenance of hemocytes. I uncovered a novel role for Pvfs in invasive migrations and found that Pvf2 and Pvf3 are not required as guidance cues during hemocyte migration, but act locally in epithelial cells to coordinate trans-epithelial movements. Additionally, I observed that Pvr activation in hemocytes attenuates immune signaling through the immune deficiency pathway (IMD). These observations redefined the role of growth factor signaling in Drosophila hemocyte migration and uncover novel roles for hemocyte invasive migration. I then assessed the role that proliferative and immune responses play in the Drosophila gut epithelium. Unlike the sterile hemolymph of the body cavity, the epithelial barriers of the Drosophila gut interface with a dense heterogeneous population of microbes. Cells of the epithelium must relay intrinsic and extrinsic signals to coordinate epithelial renewal programs and immune response. Pathogenic challenge of the epithelium drives a local humoral response through the IMD pathway and a burst of intestinal stem cell (ISC) proliferation to maintain barrier integrity. While Pvf-Pvr signaling and several additional intrinsic regulators are essential for ISC homeostatic proliferation, it is unclear if the microbiota impact these systems during infection. To this end, I assessed gut epithelial IMD and regenerative responses in Drosophila devoid of a microbiota. I found that in the absence of infection, the microbiota stimulate basal IMD signaling are essential to maintain the ISCs. I also found that during infection the gut microbiota dramatically enhance survival, support epithelial compensatory proliferation and exhibit a regulatory impact on the IMD response. Together my findings define growth factor signaling roles through Pvfs in hemocyte survival and invasive migration and identify roles for the microbiota in gut epithelial regeneration and immune responses during infection.
Book Synopsis Parasites and Pathogens of Insects by : Nancy E. Beckage
Download or read book Parasites and Pathogens of Insects written by Nancy E. Beckage and published by Academic Press. This book was released on 2012-12-02 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both volumes of Parasites and Pathogens of Insects provide in-depth coverage of the interface between insect parasites and pathogens and hosts, and explore the relationships between these partners. They emphasize biochemical and molecular interactions, basic biology, and the roles of hormones, receptors, and other cellular components in modulating interactions between host insects and attacking agents. These topics also are assessed in relation to biotechnology and biological control. In the short term, these volumes fill a void in current literature by emphasizing basic interactions at the biochemical and molecular levels. In the long term, these interactions may provide avenues for exploitation to enhance the rate of "beneficial" parasitism or to reduce the rates of disease transmission and infection of vertebrate hosts. Presents the latest information on insect parasites and pathogens Describes biochemical and molecular host-parasite and host-pathogen relationships Covers mechanisms of insect pathogenicity and resistance Provides exceptional breadth of coverage and authoritative reviews Special topics Transposable elements in insect pathogens Co-evolution and gene transfer between hosts and invaders Biological control
Book Synopsis Insect Immunology by : Nancy E. Beckage
Download or read book Insect Immunology written by Nancy E. Beckage and published by Academic Press. This book was released on 2011-04-28 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is the first book-length publication on the topic of insect immunology since 1991, complementing earlier works by offering a fresh perspective on current research. Interactions of host immune systems with both parasites and pathogens are presented in detail, as well as the genomics and proteomics, approaches which have been lacking in other publications. Beckage provides comprehensive coverage of topics important to medical researchers, including Drosophila as a model for studying cellular and humoral immune mechanisms, biochemical mediators of immunity, and insect blood cells and their functions. Encompasses the most important topics of insect immunology including mechanisms, genes, proteins, evolution and phylogeny Provides comprehensive coverage of topics important to medical researchers including Drosophila as a model for studying cellular and humoral immune mechanisms, biochemical mediators of immunity, and insect blood cells and their functions Most up-to-date information published with contributions from international leaders in the field
Book Synopsis Insect Immunity by : Petros Ligoxygakis
Download or read book Insect Immunity written by Petros Ligoxygakis and published by Academic Press. This book was released on 2017-05-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect Immunity, Volume 52 provides readers with the latest interdisciplinary reviews on the topic. It is an essential reference source for invertebrate physiologists, neurobiologists, entomologists, zoologists and insect chemists, providing invaluable chapters on Insect Antimicrobial Defenses: A Brief History, Recent Findings, Biases, and a Way Forward in Evolutionary Studies, Phagocytosis in Insect Immunity, The Melanization Response in Insect Immunity, Microbiota, Gut Physiology, and Insect Immunity, Intestinal Stem Cells: A Decade of Intensive Research in Drosophila and the Road Ahead, and Insect Symbiosis and Immunity: The Bean Bug-Burkholderia Interaction as a Case Study, along with other related topics.
Book Synopsis Treating Infectious Diseases in a Microbial World by : National Research Council
Download or read book Treating Infectious Diseases in a Microbial World written by National Research Council and published by National Academies Press. This book was released on 2006-01-03 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans coexist with millions of harmless microorganisms, but emerging diseases, resistance to antibiotics, and the threat of bioterrorism are forcing scientists to look for new ways to confront the microbes that do pose a danger. This report identifies innovative approaches to the development of antimicrobial drugs and vaccines based on a greater understanding of how the human immune system interacts with both good and bad microbes. The report concludes that the development of a single superdrug to fight all infectious agents is unrealistic.
Book Synopsis Model organisms in inflammation and cancer by : Yiorgos Apidianakis
Download or read book Model organisms in inflammation and cancer written by Yiorgos Apidianakis and published by Frontiers E-books. This book was released on 2014-12-17 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A link between inflammation and cancer was initially made by Rudolf Virchow back in the 19th century. Nowadays many cancers are considered dependent on inflammatory responses to microbial and damaged-self stimuli and both arms of immunity, innate and adaptive, are playing a role in promoting cancer. Moreover, besides environmental factors, opportunistic pathogens contribute to inflammation and cancer. Nevertheless, microbial influence on chronic disease is sometimes difficult to discern, especially in the context of polymicrobial communities, such as those found in the digestive tract. In this light, model organisms provide important insights into immune and growth signals that promote cancer, and suggest therapies that will selectively target potentially harmful microbes or modulate host responses. A number of review and opinion articles in this series address novel aspects and paradigms of the interactions between the microbiota and the host in relation to inflammation and cancer.
Book Synopsis Hemolymph Proteins and Functional Peptides by : Muhammad Tufail
Download or read book Hemolymph Proteins and Functional Peptides written by Muhammad Tufail and published by Bentham Science Publishers. This book was released on 2012 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent molecular studies have revealed an overwhelming role of hemolymph proteins and functional peptides in invertebrate physiology. This is mainly due to the large assortment of biomolecular factors each with a different structure and function. In addit
Book Synopsis Micro- and Nanotechnology in Vaccine Development by : Mariusz Skwarczynski
Download or read book Micro- and Nanotechnology in Vaccine Development written by Mariusz Skwarczynski and published by William Andrew. This book was released on 2016-09-20 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of how use of micro- and nanotechnology (MNT) has allowed major new advance in vaccine development research, and the challenges that immunologists face in making further progress. MNT allows the creation of particles that exploit the inherent ability of the human immune system to recognize small particles such as viruses and toxins. In combination with minimal protective epitope design, this permits the creation of immunogenic particles that stimulate a response against the targeted pathogen. The finely tuned response of the human immune system to small particles makes it unsurprising that many of the lead adjuvants and vaccine delivery systems currently under investigation are based on nanoparticles. Provides a comprehensive and unparalleled overview of the role of micro- and nanotechnology in vaccine development Allows researchers to quickly familiarize themselves with the broad spectrum of vaccines and how micro- and nanotechnologies are applied to their development Includes a combination of overview chapters setting out general principles, and focused content dealing with specific vaccines, making it useful to readers from a variety of disciplines
Book Synopsis Lyme Disease: Recent Advances and Perspectives by : Tanja Petnicki-Ocwieja
Download or read book Lyme Disease: Recent Advances and Perspectives written by Tanja Petnicki-Ocwieja and published by Frontiers Media SA. This book was released on 2015-08-08 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interplay between host and pathogen is a complex co-evolutionary battle of surveillance and evasion. The pathogen continuously develops mechanisms to subvert the immune response in order to establish infection while the immune system responds with novel mechanisms of detection. Because the majority of Lyme disease pathology is due to an over-exuberant immune response, much research in Borrelia burgdorferi pathogenesis has been devoted to understanding the mammalian host response to the bacterium. Immunological studies continue to be an active area of research employing emerging techniques, such as intra-vital imaging. These studies have furthered our understanding of inflammatory processes during long-term infection and provided some surprising insights, such as the continued presence of bacterial products after clearance. The field of Lyme disease has long debated the etiology of long-term inflammation and recent studies in the murine host have shed light on relevant cell types and inflammatory mediators that participate in the pathology of Lyme arthritis. Live imaging and bioluminescent studies have allowed for a novel view of the bacterial life cycle, including the tick mid-gut, tick-to-mammal transmission and dissemination throughout a mouse. A number of tick and bacterial proteins have been shown to participate in the completion of the enzootic cycle. Novel mechanisms of gene regulation are continuously being identified. However, B. burgdorferi lacks many traditional virulence factors, such as toxins or specialized secretion systems. Many genes in the B. burgdorferi genome have no known homolog in other bacteria. Therefore, studies focusing on host-pathogen interactions have therefore been limited by an incomplete understanding of the repertoire of bacterial virulence factors. Questions such as how the pathogen causes disease, colonizes the tick and evades host immune-surveillance have been difficult to address. Genetic studies involving single gene deletions have identified a number of important bacterial proteins, but a large-scale genomics approach to identify virulence factors has not been attempted until recently. The generation of a site-directed mutagenesis library is an important step towards a detailed analysis of the B. burgdorferi genome and pathogenome. Using this library, high-throughput genomic studies, utilizing techniques such as massively parallel sequencing have been promising and could be used to identify novel virulence determinants of disease in the mammalian host or persistence in the tick vector. Continued research on this unique pathogen and its specific interaction with host and vector may have far reaching consequences and provide insights for diverse disciplines including ecology, infectious disease, and immunology. Here, several reviews will discuss the most recent advances and future studies to be undertaken in the field of B. burgdorferi biology.
Book Synopsis Drosophila melanogaster by : Farzana Khan Perveen
Download or read book Drosophila melanogaster written by Farzana Khan Perveen and published by BoD – Books on Demand. This book was released on 2018-02-28 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 12 chapters divided into two sections. Section 1 is "Drosophila - Model for Genetics." It covers introduction, chromosomal polymorphism, polytene chromosomes, chromosomal inversion, chromosomal evolution, cell cycle regulators in meiosis and nongenetic transgenerational inheritance in Drosophila. It also includes ecological genetics, wild-type strains, morphometric analysis, cytostatics, frequencies of early and late embryonic lethals (EEL and LEL) and mosaic imaginal discs of Drosophila for genetic analysis in biomedical research. Section 2 is "Drosophila - Model for Therapeutics." It explains Drosophila as model for human diseases, neurodegeneration, heart-kidney metabolic disorders, cancer, pathophysiology of Parkinson's disease, dopamine, neuroprotective therapeutics, mitochondrial dysfunction and translational research. It also covers Drosophila role in ubiquitin-carboxyl-terminal hydrolase-L1 (UCH-L1) protein, eye development, anti-dUCH antibody, neuropathy target esterase (NTE), organophosphorous compound-induced delayed neuropathy (OPIDN) and hereditary spastic paraplegia (HSP). It also includes substrate specificities, kinetic parameters of recombinant glutathione S-transferases E6 and E7 (DmGSTE6 and DmGSTE7), detoxification and insecticidal resistance and antiviral immunity in Drosophila.
Book Synopsis Mechanisms of Life History Evolution by : Thomas Flatt
Download or read book Mechanisms of Life History Evolution written by Thomas Flatt and published by OUP Oxford. This book was released on 2011-05-12 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life history theory seeks to explain the evolution of the major features of life cycles by analyzing the ecological factors that shape age-specific schedules of growth, reproduction, and survival and by investigating the trade-offs that constrain the evolution of these traits. Although life history theory has made enormous progress in explaining the diversity of life history strategies among species, it traditionally ignores the underlying proximate mechanisms. This novel book argues that many fundamental problems in life history evolution, including the nature of trade-offs, can only be fully resolved if we begin to integrate information on developmental, physiological, and genetic mechanisms into the classical life history framework. Each chapter is written by an established or up-and-coming leader in their respective field; they not only represent the state of the art but also offer fresh perspectives for future research. The text is divided into 7 sections that cover basic concepts (Part 1), the mechanisms that affect different parts of the life cycle (growth, development, and maturation; reproduction; and aging and somatic maintenance) (Parts 2-4), life history plasticity (Part 5), life history integration and trade-offs (Part 6), and concludes with a synthesis chapter written by a prominent leader in the field and an editorial postscript (Part 7).
Book Synopsis Innate Immunity of Plants, Animals and Humans by : Holger Heine
Download or read book Innate Immunity of Plants, Animals and Humans written by Holger Heine and published by Springer Science & Business Media. This book was released on 2007-12-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been cunningly designed to provide an overview of our current knowledge about the innate immune systems of these three types of organisms. It not only covers the innate immune mechanisms and responses of such diverse organisms as plants, Cnidaria, Drosophila, urochordates and zebrafish, but also the major receptor systems in mammalians and humans. It delves too into the central defense mechanisms, antimicrobial peptides and the complement system.
