Coordination of ARF- and Rho-family GTPases by a Signal Transition During Phagocytosis PDF Download
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Author: Peter J. Beemiller
Publisher:
ISBN: 9780542919442
Category :
Languages : en
Pages :
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Book Description
Author: Peter J. Beemiller
Publisher:
ISBN: 9780542919442
Category :
Languages : en
Pages :
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Book Description
Author: Urja Naik
Publisher: Biota Publishing
ISBN: 1615044132
Category : Science
Languages : en
Pages : 118
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Book Description
Phagocytosis is an evolutionarily conserved mechanism that serves as the first line of host defense in multicellular organisms. The traditional definition of phagocytosis involves the engulfment and degradation of large solid particles (>0.5 μm), initiated by receptor activation on phagocytes. It forms an essential aspect of innate immunity through the uptake and destruction of infectious pathogens, while also participating in the removal of apoptotic cells during tissue remodeling and development. Professional phagocytes, such as macrophages, neutrophils, and dendritic cells, are well equipped with a wide range of phagocytic receptors. In addition, these specialized leukocytes can signal to lymphocytes within the adaptive arm of host immunity. This review emphasizes the role of two well-characterized opsonic receptors, the Fcγ receptor and the complement receptor, CR3 in macrophages. In particular, it focuses on the different mechanisms employed by these receptors during particle recognition and phagocytic uptake. Bacterial species often manipulate phagocyte signaling in order to evade their engulfment and degradation and consequently provide further insight into key regulators of the phagocytic process. Finally, we draw attention to the physiological relevance of studying the simultaneous engagement of multiple phagocytic receptors, in order to better understand receptor crosstalk and the underlying coordination of downstream signaling for efficient phagocytosis.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 902
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Book Description
Author: Richard A. Kahn
Publisher: Springer Science & Business Media
ISBN: 1402017197
Category : Science
Languages : en
Pages : 368
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Book Description
For the first time experts in the area of signalling research with a focus on the ARF family have contributed to the production of a title devoted to ARF biology. A comprehensive phylogenetic analysis of the ARF family, tables of the ARF GEFs and ARF GAPs, and more than a dozen chapters describing them in detail are provided. The impact of the ARF proteins on widely diverse aspects of cell biology and cell signalling can be clearly seen from the activities described; including membrane traffic, lipid metabolism, receptor desensitization, mouse development, microtubule dynamics, and bacterial pathogenesis. Anyone interested in understanding the complexities of cell signalling and the integration of signalling networks will benefit from this volume.
Author: Ed Manser
Publisher: Humana
ISBN: 9780896039346
Category : Science
Languages : en
Pages : 267
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Book Description
In the last 10 years researchers have firmly established key roles for R- related GTPases in almost every aspect of cell biology. In the 1980s the pro- oncogene Ras itself was the focus of interest, though in the 1990s this shifted to the increasing variety of Ras-related proteins. In this new decade much yet needs to be done to establish the role for all the small GTPases now uncovered by the human genome project. In particular, these GTPases need to be und- stood in the appropriate biochemical and cellular contexts. In the process of trying to uncover the role of these versatile proteins, a variety of novel te- niques and methodologies has been developed. These now enable investi- tors to move easily within a diversity of fields ranging from structural studies to real-time in vivo analysis of a GTPase. In recognition of the need for access to key background methodologies, GTPase Protocols: The Ras Superfamily is devoted to techniques that are pr- ently widely used and that will continue to be the standard for researchers worldwide. Each chapter is aimed at supplying detailed methodologies to allow reproduction in any laboratory, while also providing the general pr- ciples on which the methods are based. Some of the techniques grouped in the first section apply broadly to small GTPases, whereas others in Part II are more applicable within each GTPase subfamily.
Author: Sangdun Choi
Publisher: Springer
ISBN: 9781493968008
Category : Medical
Languages : en
Pages : 6330
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Book Description
The second edition of this encyclopedia presents over 400 biologically important signaling molecules and the content is built on the core concepts of their functions along with early findings written by some of the world’s foremost experts. The molecules are described by recognized leaders in each molecule. The interactions of these single molecules in signal transduction networks will also be explored. This encyclopedia marks a new era in overview of current cellular signaling molecules for the specialist and the interested non-specialist alike. Currently, there are more than 30,000 genes in human genome. However, not all the proteins encoded by these genes work equally in order to maintain homeostasis. Understanding the important signaling molecules as completely as possible will significantly improve our research-based teaching and scientific capabilities.
Author: Klaus Okkenhaug
Publisher: Frontiers Media SA
ISBN: 2889194191
Category : Immunologic diseases. Allergy
Languages : en
Pages : 140
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Book Description
The PI3Ks control many key functions in immune cells. PI3Ks phosphorylate PtdIns(4,5)P2 to yield PtdIns(3,4,5)P3. Initially, PI3K inhibitors such as Wortmannin, LY294002 and Rapamycin were used to establish a central role for Pi3K pathway in immune cells. Considerable progress in understanding the role of this pathway in cells of the immune system has been made in recent years, starting with analysis of various PI3K and Pten knockout mice and subsequently mTOR and Foxo knockout mice. Together, these experiments have revealed how PI3Ks control B cell and T cell development, T helper cell differentiation, regulatory T cell development and function, B cell and T cell trafficking, immunoglobulin class switching and much, much more. The PI3Kd inhibitor idelalisib has recently been approved for the treatment of B cell lymphoma. Clinical trials of other PI3K inhibitors in autoimmune and inflammatory diseases are also in progress. This is an opportune time to consider a Research Topic considering when what we have learned about the PI3K signalling module in lymphocyte biology and how this is making an impact on clinical immunology and haematology.
Author: Marc Thiriet
Publisher: Springer Science & Business Media
ISBN: 1461443695
Category : Science
Languages : en
Pages : 1073
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Book Description
The volumes in this authoritative series present a multidisciplinary approach to modeling and simulation of flows in the cardiovascular and ventilatory systems, especially multiscale modeling and coupled simulations. The cardiovascular and respiratory systems are tightly coupled, as their primary function is to supply oxygen to and remove carbon dioxide from the body's cells. Because physiological conduits have deformable and reactive walls, macroscopic flow behavior and prediction must be coupled to phenomenological models of nano- and microscopic events in a corrector scheme of regulated mechanisms when the vessel lumen caliber varies markedly. Therefore, investigation of flows of blood and air in physiological conduits requires an understanding of the biology, chemistry, and physics of these systems together with the mathematical tools to describe their functioning. Volume 4 is devoted to major sets of intracellular mediators that transmit signals upon stimulation of cell-surface receptors. Activation of signaling effectors triggers the release of substances stored in cellular organelles and/or gene transcription and protein synthesis. Complex stages of cell signaling can be studied using proper mathematical models, once the role of each component is carefully handled. Volume 4 also reviews various categories of cytosolic and/or nuclear mediators and illustrates some major signal transduction pathways, such as NFkappaB axis, oxygen sensing, and mechanotransduction.
Author: Channing Der
Publisher: Springer
ISBN: 9781402043284
Category : Medical
Languages : en
Pages : 0
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Book Description
Since 1982, Ras proteins have been the subject of intense research investigation by the biomedical research community. The wide interest in Ras has been stimulated for three key reasons. This book features chapters contributed by leading investigators in the field that highlight the current state-of-the art in Ras biochemistry, structure and biology. This book is an excellent reference for students in the biomedical sciences and for investigators in the field.
Author: Alfred Wittinghofer
Publisher: Springer
ISBN: 9783319077604
Category : Science
Languages : en
Pages : 0
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Book Description
This second of two volumes discusses subfamily proteins which function in molecular and vesicular transport mechanisms inside the cell. In this volume the focus lies on the Rab, Ran and Arf subfamily members. As in Volume 1, the book is written by international renowned scientists in the field of small G-proteins. In elaborate reviews, biochemistry, structure, function and G-protein - effector interactions are described. Together with Volume 1 this book provides an comprehensive state-of-the-art work on small G-proteins (GTPases). It is written for Graduates and Professors in Biochemistry and Cell Biology interested in the mechanism and function of small G-proteins but are extremely valuable for those who want to move into the field.
