Dynamics of the Il-2 Cytokine Network and T-cell Proliferation

Dynamics of the Il-2 Cytokine Network and T-cell Proliferation

Author: Dorothea Busse

Publisher: Logos Verlag Berlin GmbH

Published: 2010

Total Pages: 114

ISBN-13: 3832526935

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This book adds to a intensively investigated question of immunological research. How do regulatory T cells mediate their function to ensure tolerance against self-antigen? The author analyzes the interaction via the cytokine interleukin 2 between T helper cells, which mediate immune responses, and regulatory T cells. Since both cell types depend on interleukin 2 to mediate their functions, competition for interleukin 2 is likely. A mathematical model is developed to describe the interaction. This model focuses on the interleukin 2 receptor dynamics on helper and regulatory T cells and the extracellular interleukin 2 diffusion. The interleukin 2 receptor dynamics is governed mainly by an autocrine positive feedback loop on both cell types. However, its differential regulation results in a switch-like up-regulation of the receptors on T helper cells and a gradual adaptation of the receptor levels to extracellular interleukin 2 supply on regulatory T cells. This difference enables regulatory T cells to efficiently compete for interleukin 2 and deprive T helper cells of their growth factor. Cell culture experiments verify these findings. It can be shown that the antigen stimulus and the intercellular distance are relevant control parameters for competition. Other mechanisms are described for suppression of T helper cell action by regulatory T cells; competition for interleukin 2 may act in concert with them.


Signaling Mechanisms Regulating T Cell Diversity and Function

Signaling Mechanisms Regulating T Cell Diversity and Function

Author: Jonathan Soboloff

Publisher: CRC Press

Published: 2017-03-27

Total Pages: 258

ISBN-13: 149870509X

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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.


Research Methodology for Sport and Exercise Science

Research Methodology for Sport and Exercise Science

Author: Herbert Haag

Publisher: Logos Verlag Berlin GmbH

Published: 2010

Total Pages: 171

ISBN-13: 3832524991

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The book Research Methodology for Sport and Exercise Science is a comprehensive introduction to study and research. Besides an extensive introduction a research-logic program research is methodology presented in six parts: (I) Philosophical Foundations of Science and Research / (II) Research Methods / (III) Research Designs / (IV) Techniques of Data Collection / (V) Techniques of Data Analysis / (VI) Transfer from Research Results (Theory) to Practice. Thus a basic text-book is presented for students of sport and exercise as well as allied sciences, in order to get acquainted with the philosophy of sport science in general and research methodology in specific


Persistent Viral Infections

Persistent Viral Infections

Author: R. Ahmed

Publisher: Wiley-Blackwell

Published: 1999

Total Pages: 754

ISBN-13:

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Persistent Viral Infections Edited by Rafi Ahmed Emory Vaccine Center, Atlanta, USA and Irvin S. Y. Chen UCLA School of Medicine, Los Angeles, USA During the past decade much of our attention has focused on diseases associated with viral persistence. Major breakthroughs in immunology, and the advent of molecular approaches to study pathogenesis have increased our understanding of the complex virus-host interactions that occur during viral persistence. Persistent Viral Infections focuses on: * The pathogenesis and immunology of chronic infections * Animal models that provide, or have the potential to provide, major insights This volume will be essential reading for virologists, immunologists, oncologists and neurologists.


The Molecular Mechanisms of Regulatory T cell Immunosuppression

The Molecular Mechanisms of Regulatory T cell Immunosuppression

Author: Kendall A. Smith

Publisher: Frontiers E-books

Published:

Total Pages: 125

ISBN-13: 2889190935

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Ever since Regulatory T cells (T-Regs) were first defined as peripheral CD4+ T cells that express the interleukin-2 (IL-2) receptor alpha chain (IL-2Ra), there have been intensive efforts to determine the molecular mechanisms whereby this minor subset of CD4+ T cells (~ 5-10%) nonspecifically suppresses all potential effector T cells, whether reactive to self or non-self antigens. Multiple possible molecular mechanisms have been implicated, including the scavenging of IL-2 via the expression of high densities of IL-2Rs, the inhibition of antigen presentation via CTLA-4 molecules leading to decreased IL-2 production, the activation of intracellular cAMP thereby suppressing both IL-2 production and action, and the production of suppressive cytokines such as IL-10 and Tumor Growth Factor-beta, to list a few. However, the field has thus far failed to come to a consensus, such that some investigators have now asserted that many molecular mechanisms may be operative, in fact that perhaps all of the described mechanisms may account for the suppressive effects of these cells, acting either simultaneously or sequentially. Thus, this Research Topic is focused on articles that can shed some new light on the molecular mechanisms responsible for T-Reg immunosuppression.


Neuroimmunological Diseases

Neuroimmunological Diseases

Author: Susumu Kusunoki

Publisher: Springer

Published: 2018-05-31

Total Pages: 0

ISBN-13: 9784431566656

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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.


Mathematical Models and Immune Cell Biology

Mathematical Models and Immune Cell Biology

Author: Carmen Molina-París

Publisher: Springer Science & Business Media

Published: 2011-05-05

Total Pages: 413

ISBN-13: 1441977252

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Whole new areas of immunological research are emerging from the analysis of experimental data, going beyond statistics and parameter estimation into what an applied mathematician would recognise as modelling of dynamical systems. Stochastic methods are increasingly important, because stochastic models are closer to the Brownian reality of the cellular and sub-cellular world.


The Cytokines of the Immune System

The Cytokines of the Immune System

Author: Zlatko Dembic

Publisher: Academic Press

Published: 2015-05-23

Total Pages: 323

ISBN-13: 0124200109

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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


Issues in General Science and Scientific Theory and Method: 2011 Edition

Issues in General Science and Scientific Theory and Method: 2011 Edition

Author:

Publisher: ScholarlyEditions

Published: 2012-01-09

Total Pages: 3280

ISBN-13: 1464963460

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Issues in General Science and Scientific Theory and Method: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about General Science and Scientific Theory and Method. The editors have built Issues in General Science and Scientific Theory and Method: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about General Science and Scientific Theory and Method in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in General Science and Scientific Theory and Method: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.


Handbook on Biological Networks

Handbook on Biological Networks

Author: Stefano Boccaletti

Publisher: World Scientific

Published: 2010

Total Pages: 465

ISBN-13: 9812838805

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Networked systems are all around us. The accumulated evidence of systems as complex as a cell cannot be fully understood by studying only their isolated constituents, giving rise to a new area of interest in research OCo the study of complex networks . In a broad sense, biological networks have been one of the most studied networks, and the field has benefited from many important contributions. By understanding and modeling the structure of a biological network, a better perception of its dynamical and functional behavior is to be expected. This unique book compiles the most relevant results and novel insights provided by network theory in the biological sciences, ranging from the structure and dynamics of the brain to cellular and protein networks and to population-level biology. Sample Chapter(s). Chapter 1: Introduction (61 KB). Contents: Networks at the Cellular Level: The Structural Network Properties of Biological Systems (M Brilli & P Li); Dynamics of Multicellular Synthetic Gene Networks (E Ullner et al.); Boolean Networks in Inference and Dynamic Modeling of Biological Systems at the Molecular and Physiological Level (J Thakar & R Albert); Complexity of Boolean Dynamics in Simple Models of Signaling Networks and in Real Genetic Networks (A D az-Guilera & R ulvarez-Buylla); Geometry and Topology of Folding Landscapes (L Bongini & L Casetti); Elastic Network Models for Biomolecular Dynamics: Theory and Application to Membrane Proteins and Viruses (T R Lezon et al.); Metabolic Networks (M C Palumbo et al.); Brain Networks: The Human Brain Network (O Sporns); Brain Network Analysis from High-Resolution EEG Signals (F De Vico Fallani & F Babiloni); An Optimization Approach to the Structure of the Neuronal layout of C elegans (A Arenas et al.); Cultured Neuronal Networks Express Complex Patterns of Activity and Morphological Memory (N Raichman et al.); Synchrony and Precise Timing in Complex Neural Networks (R-M Memmesheimer & M Timme); Networks at the Individual and Population Levels: Ideas for Moving Beyond Structure to Dynamics of Ecological Networks (D B Stouffer et al.); Evolutionary Models for Simple Biosystems (F Bagnoli); Evolution of Cooperation in Adaptive Social Networks (S Van Segbroeck et al.); From Animal Collectives and Complex Networks to Decentralized Motion Control Strategies (A Buscarino et al.); Interplay of Network State and Topology in Epidemic Dynamics (T Gross). Readership: Advanced undergraduates, graduate students and researchers interested in the study of complex networks in a wide range of biological processes and systems."