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Interleukin 2 Activation Of Intracellular Signaling Pathways
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Book Synopsis Interleukin-2 Activation of Intracellular Signaling Pathways by : Forest Rohwer
Download or read book Interleukin-2 Activation of Intracellular Signaling Pathways written by Forest Rohwer and published by . This book was released on 1997 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: During an immune reaction, T cell clones must be expanded by mitogenic cytokines such as interleukin-2 (IL-2). IL-2 is able to induce proliferation, protection from apoptosis, and differentiation of T cells. These cellular phenomena are mediated through signaling events initiated at the IL-2 receptor (IL-2R) and are associated with changes in the mRNA levels that encode necessary proteins. The following work examined the molecular signals initiated at the IL-2R and sought to understand their linkage to increases in mRNA levels and subsequent cellular responses, such as proliferation and protection from apoptosis. Understanding these links is vital to understanding the molecular events that control the immune response, as well as providing insight into the cell cycle and activated transcription. To study this problem, an IL-2 responsive system based on thymic blast cells (TBCs) was developed and characterized. This system has the advantage of yielding a large number of IL-2 responsive cells from primary human tissue. Using the TBCs it was shown that transcription of important cell cycle genes is linked to the IL-2R via the c-Ras/MAPK pathway. Additionally, this pathway is responsible for IL-2 mediated proliferation. A second pathway, mediated through PKC, is responsible for upregulation of anti-apoptosis genes and protection from apoptosis. TBCs were also used to show that IL-2 can increase mRNA levels of specific genes by releasing transcriptional attenuation. Together these results show that specific signaling pathways can be linked to increases in specific mRNAs and suggest at least one mechanism of this upregulation. These results also show that increased expression of certain mRNAs may explain specific cellular responses. Finally, this work provides direction for future research that should yield more interesting insights into IL-2 mediated control of transcription.
Book Synopsis Intracellular Signaling Networks in the Immune Response: Pathways Activated by Interleukin-2 and Interleukin-4 Receptors and Their Roles in T Cell Proliferation by :
Download or read book Intracellular Signaling Networks in the Immune Response: Pathways Activated by Interleukin-2 and Interleukin-4 Receptors and Their Roles in T Cell Proliferation written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cells sense and respond to chemical and physical stimuli through signal transduction pathways, which mediate cell proliferation, differentiation, migration, and survival. The cytokines interleukin-2 (IL-2) and interleukin-4 (IL-4) are key regulators of the adaptive immune system, particularly influencing the clonal expansion and differentiation of T cells. At least in culture, both synergistic and antagonistic effects of IL-2 and -4 co-stimulation have been reported; the antagonism, when observed, is thought to arise from the utilization of a common subunit shared by IL-2 and IL-4 receptors. We have sought to characterize IL-2 and IL-4 signaling at the level of intracellular pathways activated by these receptors. IL-2 receptors are known to activate the Ras/extracellular signal-regulated kinase (Erk) and phosphoinositide (PI) 3-kinase pathways as well as the STAT5 transcription factor. IL-4 is unique among cytokines in that it does not activate Ras⁄Erk; it does activate PI 3-kinase⁄Akt as well as a distinct STAT, STAT6. The HT-2 mouse T cell line responds to both IL-2 and -4. We found that IL-4 initially antagonizes, and later synergizes with, IL-2-stimulated HT-2 cell proliferation in a dose-dependent manner. IL-4 also stimulates cell adhesion in static cultures. At the level of intracellular signaling, IL-4 antagonizes IL-2-stimulated activation of Akt, possibly through competition for limiting amounts of common receptor subunit and/or PI 3-kinase. Because IL-4 alone does not promote any Erk activation, we were surprised to find that IL-4 enhances IL-2-stimulated activation of Erk. IL-2⁄IL-4 co-stimulation provokes transient activation of STAT5 and prolonged activation of STAT6. This extended STAT6 activation may be critical in the IL-2⁄IL-4 induced synergy in T cell growth. Currently, we are investigating the crosstalk between these pathways and their functional roles in IL-2 and IL-4-stimulated T cell responses.
Book Synopsis Intracellular Signaling Networks in the Immune Response by : Kristen Krupa Comfort
Download or read book Intracellular Signaling Networks in the Immune Response written by Kristen Krupa Comfort and published by . This book was released on 2006 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: Akt, Interleukin-4, STAT6, Interleukin-2, T cell proliferation, signal transduction.
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 CD4+CD25+ Regulatory T Cells: Origin, Function and Therapeutic Potential by : B. Kyewski
Download or read book CD4+CD25+ Regulatory T Cells: Origin, Function and Therapeutic Potential written by B. Kyewski and published by Springer Science & Business Media. This book was released on 2006-01-09 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vertebrate immune system defends the organism against invading pathogens while at the same time being self-tolerant to the body’s own constituents thus preserving its integrity. Multiple mechanisms work in concert to ensure self-tolerance. Apart from purging the T cell repertoire from auto-reactive T cells via negative selection in the thymus dominant tolerance exerted by regulatory T cells plays a major role in tolerance imposition and maintenance. Among the various regulatory/suppressive cells hitherto described, CD4+CD25+ regulatory T cells (Treg) and interleukin-10 producing T regulatory 1 (Tr1) cells have been studied in most detail and are the subject of most articles in this issue. Treg, also called "natural" regulatory T cells, will be traced from their intra-thymic origin to the site of their action in peripheral lymphoid organs and tissues. The repertoire of Treg is clearly biased towards recognition of self-antigens, thereby potentially preventing autoimmune diseases such as gastritis and oophoritis. Regulatory T cells, however also control infections, allergies and tolerance to transplanted tissues and this requires their induction in the periphery under conditions which are not yet fully understood. The concept of dominant tolerance, by far not novel, will offer new insights and hopefully tools for the successful treatment of autoimmune diseases, improved cancer immunotherapy and transplant survival. The fulfillment of these high expectations will, however, require their unambiguous identification and a better understanding of their mode of action.
Book Synopsis Protein Kinase-mediated Decisions Between Life and Death by : Ayse Basak Engin
Download or read book Protein Kinase-mediated Decisions Between Life and Death written by Ayse Basak Engin and published by Springer Nature. This book was released on 2021-02-04 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protein phosphorylation via protein kinases is an inevitable process that alters physiological and pathological functions of the cells. Thus, protein kinases play key roles in the regulation of cell life or death decisions. Protein kinases are frequently a driving factor in a variety of human diseases including aging and cellular senescence, immune system and endothelial dysfunctions, cancers, insulin resistance, cholestasis and neurodegenerative diseases, as well as bacterial resistance in persistent infections. Recent developments in quantitative proteomics provide important opinions on kinase inhibitor selectivity and their modes of action in the biological context. Protein Kinase-mediated Decisions Between Life and Death aims to have the reader catch insights about up-to-date opinions on “Protein Kinases” related pathways that threaten human health and life. As “Protein Kinases” are related to many health problems, clinicians, basic science researchers and students need this information. Chapter “Signal Transduction in Immune Cells and Protein Kinases” is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Book Synopsis Signal Transduction Pathways in Autoimmunity by : Amnon Altman
Download or read book Signal Transduction Pathways in Autoimmunity written by Amnon Altman and published by Karger Medical and Scientific Publishers. This book was released on 2002 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: An immensely complex network of interactions between multiple cell types and cytokines regulates the immune system. Ligand binding to antigen-specific, Fc, or cytokine receptors initiates differentiation, activation and proliferation of multiple immune system cell lineages. These activating pathways are counteracted by inhibitory receptors. In the past two decades, considerable work on mechanistic and functional details of such intracellular signaling pathways has led to the realization that an excess of stimulatory/positive signals as well as a deficiency in inhibitory/negative signals can both result in a hyperactive immune system leading to autoimmunity. The chapters included in this volume represent but a few examples of the close link between aberrant signaling pathways and autoimmune diseases. They cover a variety of cells (T, B and myeloid/monocytic cells), receptors (for antigen, Fc and cytokines) and intracellular signaling molecules (kinases, phosphatases, adapters and transcription factors) in the immune system. This book brings together clinical and experimental aspects of autoimmune disease and the fundamental science of intracellular signaling pathways. Therefore, it should be of interest to clinical investigators of autoimmune diseases as well as to basic immunologists and cell biologists interested in the molecular basis of signal transduction in the immune system.
Book Synopsis The Role of Protein Kinase C in IL-2 Signal Transduction by : Yin Lu
Download or read book The Role of Protein Kinase C in IL-2 Signal Transduction written by Yin Lu and published by . This book was released on 1996 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: In summary, IL-2 stimulated PKC in CTLL-2 cells, not through the translocation of cytosolic enzyme to membrane, but via activation of inactive membrane associated PKC. This PKC activation was involved in IL-2's ability to suppress apoptosis in these cells. The mechanism(s) of PKC activation by IL-2 is substantially more complicated than we initially thought, and it likely involved multiple second messengers, including G-proteins, DAG, AA and factor X. (Abstract shortened by UMI.).
Download or read book Itch written by E. Carstens and published by CRC Press. This book was released on 2014-02-25 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in itch research have elucidated differences between itch and pain but have also blurred the distinction between them. There is a long debate about how somatic sensations including touch, pain, itch, and temperature sensitivity are encoded by the nervous system. Research suggests that each sensory modality is processed along a fixed, direct-line communication system from the skin to the brain. Itch: Mechanisms and Treatment presents a timely update on all aspects of itch research and the clinical treatment of itch that accompanies many dermatological conditions including psoriasis, neuropathic itch, cutaneous t-cells lymphomas, and systemic diseases such as kidney and liver disease and cancer. Composed of contributions from distinguished researchers around the world, the book explores topics such as: Neuropathic itch Peripheral neuronal mechanism of itch The role of PAR-2 in neuroimmune communication and itch Mrgprs as itch receptors The role of interleukin-31 and oncostatin M in itch and neuroimmune communication Spinal coding of itch and pain Spinal microcircuits and the regulation of itch Examining new findings on cellular and molecular mechanisms, the book is a compendium of the most current research on itch, its prevalence in society, and the problems associated with treatment.
Book Synopsis Signaling Pathways Activated by Interleukin-2 and Interleukin-4 Receptors Mediate T Lymphocyte Clonal Expansion by :
Download or read book Signaling Pathways Activated by Interleukin-2 and Interleukin-4 Receptors Mediate T Lymphocyte Clonal Expansion written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Signaling Mechanisms Regulating T Cell Diversity and Function by : Jonathan Soboloff
Download or read book Signaling Mechanisms Regulating T Cell Diversity and Function written by Jonathan Soboloff and published by CRC Press. This book was released on 2017-03-27 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: T cells play a vital role mediating adaptive immunity, a specific acquired resistance to an infectious agent produced by the introduction of an antigen. There are a variety of T cell types with different functions. They are called T cells, because they are derived from the thymus gland. This volume discusses how T cells are regulated through the operation of signaling mechanisms. Topics covered include positive and negative selection, early events in T cell receptor engagement, and various T cell subsets.
Book Synopsis B Cell Receptor Signaling by : Tomohiro Kurosaki
Download or read book B Cell Receptor Signaling written by Tomohiro Kurosaki and published by Springer. This book was released on 2015-12-26 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details our current understanding of the architecture and signaling capabilities of the B cell antigen receptor (BCR) in health and disease. The first chapters review new insights into the assembly of BCR components and their organization on the cell surface. Subsequent contributions focus on the molecular interactions that connect the BCR with major intracellular signaling pathways such as Ca2+ mobilization, membrane phospholipid metabolism, nuclear translocation of NF-kB or the activation of Bruton’s Tyrosine Kinase and MAP kinases. These elements orchestrate cytoplasmic and nuclear responses as well as cytoskeleton dynamics for antigen internalization. Furthermore, a key mechanism of how B cells remember their cognate antigen is discussed in detail. Altogether, the discoveries presented provide a better understanding of B cell biology and help to explain some B cell-mediated pathogenicities, like autoimmune phenomena or the formation of B cell tumors, while also paving the way for eventually combating these diseases.
Book Synopsis Neuroimmunological Diseases by : Susumu Kusunoki
Download or read book Neuroimmunological Diseases written by Susumu Kusunoki and published by Springer. This book was released on 2018-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a detailed review of the remarkable advances that have been made in research on the pathogenesis of a number of neuroimmunological diseases, as well as outlining novel treatments including the use of monoclonal antibodies. Written by renowned experts who have made major contributions in the field, such as identifying neuromyelitis optica as an immunopathological clinical condition, identifying the role of ganglioside and ganglioside-complex antibodies in Guillain-Barré syndrome, and developing a novel treatment for POEMS (polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes) syndrome, the book summarizes recent advances in basic and clinical research. Neuroimmunological Diseases is a useful resource for not only researchers but also neurologists who are engaged in the management of neuroimmunological diseases.
Book Synopsis Cooperation of Liver Cells in Health and Disease by : Z. Kmiec
Download or read book Cooperation of Liver Cells in Health and Disease written by Z. Kmiec and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is only during the last decade that the functions of sinusoidal endothelial cells, Kupffer cells, hepatic stellate cells, pit cells and other intrahepatic lymphocytes have been better understood. The development of methods for isolation and co-culturing various types of liver cells has established that they communicate and cooperate via secretion of various intercellular mediators. This monograph summarizes multiple data that suggest the important role of cellular cross-talk for the functions of both normal and diseased liver. Special features of the book include concise presentation of the majority of detailed data in 19 tables. Original schemes allow for the clear illustration of complicated intercellular relationships. This is the first ever presentation of the newly emerging field of liver biology, which is important for hepatic function in health and disease and opens new avenues for therapeutic interventions.
Book Synopsis Signal Transduction in Cancer by : David A. Frank
Download or read book Signal Transduction in Cancer written by David A. Frank and published by Springer Science & Business Media. This book was released on 2002-12-31 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most exciting areas of cancer research now is the development of agents which can target signal transduction pathways that are activated inappropriately in malignant cells. The understanding of the molecular abnormalities which distinguish malignant cells from their normal counterparts has grown tremendously. This volume summarizes the current research on the role that signal transduction pathways play in the pathogenesis of cancer and how this knowledge may be used to develop the next generation of more effective and less toxic anticancer agents. Series Editor comments: "The biologic behavior of both normal and cancer cells is determined by critical signal transduction pathways. This text provides a comprehensive review of the field. Leading investigators discuss key molecules that may prove to be important diagnostic and/or therapeutic targets."
Book Synopsis Tissue-Specific Cell Signaling by : Joana Vieira Silva
Download or read book Tissue-Specific Cell Signaling written by Joana Vieira Silva and published by Springer Nature. This book was released on 2020-05-29 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signal transduction comprises the intracellular biochemical signals which induce the appropriate cell response to an external stimulus. The players in signal transduction are diverse, from small molecules as first messengers, to proteins, receptors, transcription factors, among many others. The different signaling pathways and the crosstalk between them originates the unique signaling profile of every cell type in the human body. The cell signaling specificity depends on several aspects including protein composition, subcellular localization and complexes and gene promoters. This textbook provides a comprehensive overview of the specific signaling pathways on a variety of human tissues. This information can be of great value for health science researchers, professionals and students to understand key pathways for tissue-specific functions in the plethora of signals, signals receptors, transducers and effectors. Chapter 3 and 15 are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Book Synopsis The Cytokines of the Immune System by : Zlatko Dembic
Download or read book The Cytokines of the Immune System written by Zlatko Dembic and published by Academic Press. This book was released on 2015-05-23 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cytokines of the Immune System catalogs cytokines and links them to physiology and pathology, providing a welcome and hugely timely tool for scientists in all related fields. In cataloguing cytokines, it lists their potential for therapeutic use, links them to disease treatments needing further research and development, and shows their utility for learning about the immune system. This book offers a new approach in the study of cytokines by combining detailed guidebook-style cytokine description, disease linking, and presentation of immunologic roles. - Supplies new ideas for basic and clinical research - Provides cytokine descriptions in a guidebook-style, cataloging the origins, structures, functions, receptors, disease-linkage, and therapeutic potentials - Offers a textbook-style view on the immune system with the immunologic role of each cytokine
