Transcriptional And Chromatin Regulation In Adaptive And Innate Immune Cells

Author : Keiko Ozato,Dinah S. Singer
Publisher : Frontiers Media SA
Page : 149 pages
File Size : 44,9 Mb
Release : 2020-05-22
Category : Electronic
ISBN : 9782889637232

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Transcriptional and Chromatin Regulation in Adaptive and Innate Immune Cells by Keiko Ozato,Dinah S. Singer Pdf

Transcription depends on an ordered sequence of events, starting with (i) setting of the enhancer and chromatin environment, (ii) assembly of DNA binding and general transcription factors, (iii) initiation, elongation, processing of mRNA and termination, followed by (iv) creation of epigenetic marks and memory formation. Highlighting the importance of these activities, more than 10% total genes are dedicated to regulating transcriptional mechanisms. This area of research is highly active and new insights are continuously being added to our knowledge. Cells of the immune system have unique features of gene regulation to support diverse tasks required for innate and adaptive immunity. Innate immunity involves the recognition of external infectious and noxious agents as well as internal cancer cell components, and the elimination of these agents by non-specific mechanisms. Adaptive immunity involves gene rearrangement to achieve highly specific T and B cell responses, imparting the capability of self and non-self discrimination. This requires transcription and epigenetic regulation. Adaptive immunity also employs epigenetic memory, enabling recapitulation of prior transcription. Recent advances in nuclear architecture, chromatin structure, and transcriptional regulation have provided new insights into immune responses. The increased understanding of these molecular mechanisms is now affording opportunities to improve therapeutic strategies for various diseases.

Author : Ananda L Roy
Publisher : Frontiers Media SA
Page : 145 pages
File Size : 54,5 Mb
Release : 2015-04-14
Category : Chromatin
ISBN : 9782889195107

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Chromatin & Transcriptional Tango on the Immune Dance Floor by Ananda L Roy Pdf

Signaling through the cell surface antigen receptor is a hallmark of various stages of lymphocyte development and adaptive immunity. Besides the adaptive immune system, the innate immunity is equally important for protection. However, the mechanistic connection between signaling, chromatin changes and downstream transcriptional pathways in both innate and adaptive immune system remains incompletely understood in hematopoiesis. A related issue is how the enhancers communicate to the promoters in a stage specific fashion and in the context of chromatin. Because the factors that regulate chromatin are generally present and active in most cell types, how could cell type and/or stage specific chromatin architecture is achieved in response to a particular immune signal? The genetic loci that encode lymphocyte cell surface receptors are in an ‘unrearranged” or “germline” configuration during the early stages of development. Thus, in addition to expressing lineage and/or stage specific transcription factors during each developmental stage, lymphocytes also need to rearrange their cognate receptor loci in a strictly ordered fashion. Hence, there must be a tightly coordinated communication between the recombination machinery and the transcriptional machinery (including chromatin regulators) at every developmental step. Mature B cells also undergo classswitch recombination and somatic hypermutation. Importantly, along the way, these cells must avoid autoimmune responses and only those cells capable of recognizing foreignantigens are preserved to reach peripheral organs where they must function. The exquisite regulation that govern chromatin accessibility, recombination and transcription regulation in response to the environmental signals in the immune system is discussed here is a series of articles.

Author : Ananda L. Roy
Publisher : Unknown
Page : 144 pages
File Size : 50,6 Mb
Release : 2015
Category : Immunology
ISBN : OCLC:1125452653

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Chromatin & Transcriptional Tango on the Immune Dance Floor by Ananda L. Roy Pdf

The process of generating differentiated cell types performing specific effector functions from their respective undifferentiated precursors is dictated by extracellular signals and the recipient cell's ability to transmit those signals to effect changes in cellular functions. One major mechanism for bringing about such changes is at the level of transcription. Thus, inducing transcription of previously silent genes and suppressing active genes in response to the extracellular signal can result in acquiring new functions by the cells. The transcriptional machinery, comprising of RNA Polymerase II and associated general transcription factors, assemble at the core promoter of eukaryotic protein coding genes. The rate and/or stability of formation of this machinery dictate the transcriptional regulation of the corresponding gene, which can be at the level of chromatin regulation as well as enhancer-promoter communication. Such coordinated temporal and spatial regulation of gene expression in response to specific signals determines lineage differentiation, cellular proliferation and development. Every event in the life cycle of a lymphocyte is modulated by the signals they receive. For instance, expression of the B cell antigen receptor (BCR) on the surface of B cells is a hallmark of various stages of B cell development--signaling via the BCR is important both during early/antigen independent (tonic) and late/antigen dependent phases of development. Despite the established requirement for BCR signaling during various phases of B cell maturation, how BCR signaling connects to chromatin changes and downstream transcriptional pathways in each step of development remains poorly understood. Similar questions also remain in other cells of the immune system. Moreover, how the enhancers communicate to the promoters in a stage specific fashion and in the context of chromatin also remain unclear. Chromatin modifiers are generally present and active in most cell types. How could then there be differences in chromatin architecture dependent on a particular stage of development? The B (and T) lymphocytes also perform a unique developmental program because they have an unparalleled genetic makeup--the genetic loci that encode their cell surface receptors are in an 'unrearranged" or "germline" configuration during the early stages of development. Thus, they not only express stage specific genes and transcription factors during each developmental stage, they need to undergo rearrangement of their cognate receptor loci in a strictly ordered fashion to generate a pool of receptor proteins, each capable of recognizing a specific antigen, which they encounter at a much later step. Hence, there must be a strict negotiation between the recombination machinery and the transcriptional machinery at every developmental step of the way. Importantly, along the way, the B cells expressing receptors capable of recognizing self-antigens must be eliminated to avoid autoimmune responses and only those cells capable of recognizing foreign-antigens are preserved to reach peripheral organs where they eventually meet pathogens. How are these processes coordinately regulated in a stage specific fashion and what role does chromatin play? Are the rules of engagement different in innate versus adaptive immune responses? Here we seek to address some of these questions and provide our current understanding of signal-induced chromatin and transcriptional regulation of the immune system

Author : Anonim
Publisher : Academic Press
Page : 318 pages
File Size : 55,7 Mb
Release : 2017-01-02
Category : Medical
ISBN : 9780128123935

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Chromatin Remodelling and Immunity by Anonim Pdf

Chromatin Remodelling and Immunity, Volume 106, the latest release in the Advances in Protein Chemistry and Structural Biology series is an essential resource for protein chemists. Each volume brings forth new information about protocols and analysis of proteins, with each thematically organized volume guest edited by leading experts in a broad range of protein-related topics. Provides cutting-edge developments in protein chemistry and structural biology Written by authorities in the field Targeted to a wide audience of researchers, specialists, and students

Author : Jie Xu
Publisher : Springer Nature
Page : 657 pages
File Size : 42,5 Mb
Release : 2020-03-17
Category : Medical
ISBN : 9789811532665

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Regulation of Cancer Immune Checkpoints by Jie Xu Pdf

This book systematically reviews the most important findings on cancer immune checkpoints, sharing essential insights into this rapidly evolving yet largely unexplored research topic. The past decade has seen major advances in cancer immune checkpoint therapy, which has demonstrated impressive clinical benefits. The family of checkpoints for mediating cancer immune evasion now includes CTLA-4, PD-1/PD-L1, CD27/CD70, FGL-1/LAG-3, Siglec-15, VISTA (PD-1L)/VSIG3, CD47/SIRPA, APOE/LILRB4, TIGIT, and many others. Despite these strides, most patients do not show lasting remission, and some cancers have been completely resistant to the therapy. The potentially lethal adverse effects of checkpoint blockade represent another major challenge, the mechanisms of which remain poorly understood. Compared to the cancer signaling pathways, such as p53 and Ras, mechanistic studies on immune checkpoint pathways are still in their infancy. To improve the responses to checkpoint blockade therapy and limit the adverse effects, it is essential to understand the molecular regulation of checkpoint molecules in both malignant and healthy cells/tissues. This book begins with an introduction to immune checkpoint therapy and its challenges, and subsequently describes the regulation of checkpoints at different levels. In closing, it discusses recent therapeutic developments based on mechanistic findings, and outlines goals for future translational studies. The book offers a valuable resource for researchers in the cancer immunotherapy field, helping to form a roadmap for checkpoint regulation and develop safer and more effective immunotherapies.

Author : Robert M Blumenthal,Xiaodong Cheng
Publisher : World Scientific
Page : 419 pages
File Size : 49,5 Mb
Release : 1999-07-23
Category : Science
ISBN : 9789814494977

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S-adenosylmethionine-dependent Methyltransferases: Structures And Functions by Robert M Blumenthal,Xiaodong Cheng Pdf

This invaluable volume, written by an international group of scientists, presents an overview of the AdoMet-dependent methyltransferases, with special emphasis on structure-function relationships.S-adenosyl-L-methionine (AdoMet) is the second most commonly used enzyme cofactor after ATP. The AdoMet-dependent methyltransferases act on a wide variety of target molecules, including DNA, RNA, protein, polysaccharides, lipids and a range of small molecules.The well-conserved architecture of these enzymes, and the implications of this conservation for their evolutionary history, are major themes of this book. The thirteen chapters describe in detail the structures, enzyme kinetics and biological roles of the AdoMet-dependent methyltransferases from a wide range of cell types: plant, animal, bacterial and archaeal.

Author : Trygve Tollefsbol
Publisher : Academic Press
Page : 736 pages
File Size : 50,8 Mb
Release : 2020-07-08
Category : Medical
ISBN : 9780128194157

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Epigenetics Methods by Trygve Tollefsbol Pdf

In recent years, the field of epigenetics has grown significantly, driving new understanding of human developmental processes and disease expression, as well as advances in diagnostics and therapeutics. As the field of epigenetics continues to grow, methods and technologies have multiplied, resulting in a wide range of approaches and tools researchers might employ. Epigenetics Methods offers comprehensive instruction in methods, protocols, and experimental approaches applied in field of epigenetics. Here, across thirty-five chapters, specialists offer step-by-step overviews of methods used to study various epigenetic mechanisms, as employed in basic and translational research. Leading the reader from fundamental to more advanced methods, the book begins with thorough instruction in DNA methylation techniques and gene or locus-specific methylation analyses, followed by histone modification methods, chromatin evaluation, enzyme analyses of histone methylation, and studies of non-coding RNAs as epigenetic modulators. Recently developed techniques and technologies discussed include single-cell epigenomics, epigenetic editing, computational epigenetics, systems biology epigenetic methods, and forensic epigenetic approaches. Epigenetics methods currently in-development, and their implication for future research, are also considered in-depth. In addition, as with the wider life sciences, reproducibility across experiments, labs, and subdisciplines is a growing issue for epigenetics researchers. This volume provides consensus-driven methods instruction and overviews. Tollefsbol and contributing authors survey the range of existing methods; identify best practices, common themes, and challenges; and bring unity of approach to a diverse and ever-evolving field. Includes contributions by leading international investigators involved in epigenetic research and clinical and therapeutic application Integrates technology and translation with fundamental chapters on epigenetics methods, as well as chapters on more novel and advanced epigenetics methods Written at verbal and technical levels that can be understood by scientists and students alike Includes chapters on state-of-the-art techniques such as single-cell epigenomics, use of CRISPR/Cas9 for epigenetic editing, and epigenetics methods applied to forensics

Author : Dakang Xu
Publisher : Springer
Page : 244 pages
File Size : 46,5 Mb
Release : 2017-09-18
Category : Medical
ISBN : 9789811059872

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Regulation of Inflammatory Signaling in Health and Disease by Dakang Xu Pdf

This book discusses recent research in innate immunity, which has revealed a large number of receptors that sense the presence of microorganisms or cellular damage in tissues. In complex tissues, many of these sensing events occur simultaneously. Thus, the downstream signaling pathways need to be integrated so that an appropriate cellular inflammatory response can be initiated. In addition, the inflammasome defines the molecular and cellular processes of inflammation in response to microbial infection. Previous data suggested that regulation of inflammasomes is mediated by microbes, but inflammasomes also have antimicrobial functions. Increasing evidence in mouse models, together with human data, strongly implicates an involvement of the inflammasome and uncontrolled inflammation in the initiation and progression of diseases with a high impact on public health. The book reviews novel aspects of functional genomics, epigenomics, transcriptomics, post-translat ional modifications, microbiome and immunometabolism in order to understand inflammatory signaling and responses, covering recent findings on the mechanisms underlying the regulation of inflammatory responses to pathogens, dysregulation of these responses in inflammatory disease, and the use of such mechanisms to boost or subdue the inflammatory response. Bridging the gaps in understanding between the fields of human and mouse immunology, it provides valuable insights into inflammatory-mediated disease and immune defense. Such innovative perspectives in both basic and clinical research promote the translation of knowledge to the clinic.

Author : Chien-Kuo Lee,Hans A. R. Bluyssen
Publisher : Frontiers Media SA
Page : 221 pages
File Size : 52,9 Mb
Release : 2019-10-21
Category : Electronic
ISBN : 9782889631254

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STATs and IRFs in Innate Immunity: From Transcriptional Regulators to Therapeutic Targets by Chien-Kuo Lee,Hans A. R. Bluyssen Pdf

Author : Anonim
Publisher : Academic Press
Page : 4109 pages
File Size : 52,5 Mb
Release : 2021-02-24
Category : Science
ISBN : 9780128145166

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Encyclopedia of Virology by Anonim Pdf

Encyclopedia of Virology, Fourth Edition, Five Volume Set builds on the solid foundation laid by the previous editions, expanding its reach with new and timely topics. In five volumes, the work provides comprehensive coverage of the whole virosphere, making this a unique resource. Content explores viruses present in the environment and the pathogenic viruses of humans, animals, plants and microorganisms. Key areas and concepts concerning virus classification, structure, epidemiology, pathogenesis, diagnosis, treatment and prevention are discussed, guiding the reader through chapters that are presented at an accessible level, and include further readings for those needing more specific information. More than ever now, with the Covid19 pandemic, we are seeing the huge impact viruses have on our life and society. This encyclopedia is a must-have resource for scientists and practitioners, and a great source of information for the wider public. Offers students and researchers a one-stop shop for information on virology not easily available elsewhere Fills a critical gap of information in a field that has seen significant progress in recent years Authored and edited by recognized experts in the field, with a range of different expertise, thus ensuring a high-quality standard

Author : Simon Fillatreau,Anne O'Garra
Publisher : Springer
Page : 244 pages
File Size : 51,5 Mb
Release : 2014-07-08
Category : Medical
ISBN : 9783662434925

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Interleukin-10 in Health and Disease by Simon Fillatreau,Anne O'Garra Pdf

This volume provides a set of reviews dedicated to the biology of Interleukin (IL)-10. It includes chapters on its importance for maintaining immune homeostasis in humans, its role in intestinal immunity and its functions during viral and bacterial infections. In addition, it presents reviews on the mechanisms linking innate microbial recognition to the production of IL-10 and on how IL-10 recognition by its receptor functions. The roles of T and B cells as relevant sources of IL-10 are also discussed, with an emphasis on the clinical opportunities offered by IL-10-producing Tr1 cells for the suppression of unwanted immunity. Finally, the functions of other cytokines of the IL-10 family are presented. Collectively, these articles provide a comprehensive overview of our current knowledge on one of the most important anti-inflammatory cytokines known to date.

Author : José Luis Sardina,Justin Brumbaugh,Bruno Di Stefano
Publisher : Frontiers Media SA
Page : 171 pages
File Size : 41,9 Mb
Release : 2021-10-20
Category : Science
ISBN : 9782889715107

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Chromatin Regulation in Cell Fate Decisions by José Luis Sardina,Justin Brumbaugh,Bruno Di Stefano Pdf

Author : Ayse Basak Engin,Atilla Engin
Publisher : Springer Nature
Page : 415 pages
File Size : 51,5 Mb
Release : 2021-02-04
Category : Medical
ISBN : 9783030498443

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Protein Kinase-mediated Decisions Between Life and Death by Ayse Basak Engin,Atilla Engin Pdf

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.

Author : Walter Gottlieb Land
Publisher : Springer
Page : 870 pages
File Size : 40,8 Mb
Release : 2018-10-09
Category : Medical
ISBN : 9783319786551

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Damage-Associated Molecular Patterns in Human Diseases by Walter Gottlieb Land Pdf

This book presents current understanding of the importance of modern immunology in the etiopathogenesis of human diseases and explores how this understanding is impacting on diagnosis, prognosis, treatment, and prophylaxis. As the core of modern immunology, the “danger/injury model” is introduced and addressed throughout the book. Volume I of the book describes the network of damage-associated molecular pattern molecules (DAMPs) and examines the central role of DAMPs in cellular stress responses and associated regulated cell death, the promotion and resolution of inflammation, the activation of innate lymphoid cells and unconventional T cells, the stimulation of adaptive immunity, and tissue repair. The significance of DAMPs in a wide range of human diseases will then be explored in Volume II of the book, with discussion of the implications of injury-induced innate immunity for present and future treatments. This book is written for professionals from all medical and paramedical disciplines who are interested in the introduction of innovative data from immunity and inflammation research into clinical practice. The readership will include practitioners and clinicians such as hematologists, rheumatologists, traumatologists, oncologists, intensive care anesthetists, endocrinologists such as diabetologists, psychiatrists, neurologists, pharmacists, and transplantologists.

Author : Christopher Chase
Publisher : Elsevier Health Sciences
Page : 128 pages
File Size : 46,7 Mb
Release : 2019-10-12
Category : Medical
ISBN : 9780323683463

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Immunology,An Issue of Veterinary Clinics of North America: Food Animal Practice by Christopher Chase Pdf

This issue of Veterinary Clinics: Food Animal Practice, guest edited by Dr. Christopher Chase in collaboration with Consulting Editor Dr. Robert Smith, focuses on Ruminant Immunology. Article topics include: Herd immunity: an epidemiologist's view; Genetics of immunoresponsive and correlates of immunity; Microbiome and immunity: an evolving field; Vaccine administration dos and don'ts (endotoxin stacking; delayed MLV); Mycoplasma bovis: interations with the immune system and failure to generate an immune response; Nutriceuticals and their effect on immune response; Adjuvants; Immunology of maximizing passive transfer; Mucosal immunity and common mucosal response; Vaccinating in the face of maternal immunity; and Gamma Delta T cells in ruminants: their role, function, and importance.