Download or read book Mechanisms of Aryl Hydrocarbon Receptor mediated Regulation of Gene Expression and the Cell Cycle written by Jennifer L. Marlowe and published by . This book was released on 2006 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this dissertation is the discovery of novel mechanisms and pathways of gene regulation by the aryl hydrocarbon receptor (AHR), primarily regarding the role of this protein in modulating cell cycle progression. The AHR is a member of the PAS (Per-Arnt-Sim) superfamily of receptors, which mediate responses to environmental stresses such as hypoxia and circadian rhythm, and control basic physiologic processes like vascular development, learning, and neurogenesis. The AHR protein was discovered by virtue of its high affinity interaction with the persistent environmental contaminant 2,3,7,8-tetrachlorodibenzo- p-dioxin (TCDD), and is now known as the primary mediator of the toxic effects of this and hundreds of other HAH and PAH ligands. The mechanisms by which the AHR acts to mediate toxicity of these compounds include the activity of the AHR as a potent transcriptional activator. The ligand-bound AHR, with its dimerization-binding partner ARNT, upregulates the expression of a battery of genes that function in the metabolism of PAH and HAH compounds. However, the diversity of toxic responses mediated by compounds such as TCDD are not adequately explained by the expression of this battery of genes. One of the primary roles of the AHR, both from a physiological and toxicological standpoint, is the control of cell cycle progression. The AHR may affect cell proliferation, differentiation, or apoptosis depending on the cell type examined, and the mechanisms of these effects remain unclear. Literally hundreds of genes have been implicated as being regulated either directly or indirectly by the AHR, and many of these genes are related to aspects of cell cycle control. The goal of this dissertation is to explore mechanisms by which the AHR modulates the cell cycle through the investigation of novel gene targets of the receptor. Chapter 2 summarizes the current body of knowledge regarding the AHR, its ligands, and perturbations of the cell cycle. Chapter 3 investigates a mechanism whereby the AHR is able to repress the expression of specific cell cycle-regulated genes through its interaction with the retinoblastoma protein, a tumor suppressor and major component of the G1/S checkpoint control mechanism. Chapter 4 explores an interaction between the AHR and E2F proteins, also major regulatory components of S-phase progression and DNA replication, and the constitutive activity of the AHR in maintaining basal expression levels of a large number of E2F-regulated genes. Finally, Chapter 5 outlines the identification of novel promoter targets of the AHR using chromatin immunoprecipitation and promoter tiling arrays. The results presented throughout this work show the diversity of AHR functions related both to toxicological endpoints and normal cell physiology, and illustrate the ability of this important transcription factor to regulate the expression of a large number of genes by a variety of distinctive mechanisms.
Download or read book Encyclopedia of Signaling Molecules written by Sangdun Choi and published by Springer. This book was released on 2017-12-15 with total page 6330 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Normal and Malignant B Cell written by Mourad Aribi and published by BoD – Books on Demand. This book was released on 2020-02-26 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Normal and Malignant B-Cell is a collection of harmonious chapters contributed by different authors. This book sets out to describe the B-cell during different stages of ontogeny and the molecular mechanisms of its antigen receptor diversity. It also discusses the main clinical and etiopathogenic aspects when it is transformed into a malignant cell. The book will be interesting and useful for clinicians, biologists, researchers, teachers, and graduate students of both doctoral and master's degrees in the field of immunology.
Download or read book Biomarkers in Breast Cancer written by Giampietro Gasparini and published by Springer Science & Business Media. This book was released on 2008-01-17 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expert laboratory and clinical researchers from around the world review how to design and evaluate studies of tumor markers and examine their use in breast cancer patients. The authors cover both the major advances in sophisticated molecular methods and the state-of-the-art in conventional prognostic and predictive indicators. Among the topics discussed are the relevance of rigorous study design and guidelines for the validation studies of new biomarkers, gene expression profiling by tissue microarrays, adjuvant systemic therapy, and the use of estrogen, progesterone, and epidermal growth factor receptors as both prognostic and predictive indicators. Highlights include the evaluation of HER2 and EGFR family members, of p53, and of UPA/PAI-1; the detection of rare cells in blood and marrow; and the detection and analysis of soluble, circulating markers.
Download or read book Encyclopedia of Cancer written by Manfred Schwab and published by Springer Science & Business Media. This book was released on 2008-09-23 with total page 3307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive encyclopedic reference provides rapid access to focused information on topics of cancer research for clinicians, research scientists and advanced students. Given the overwhelming success of the first edition, which appeared in 2001, and fast development in the different fields of cancer research, it has been decided to publish a second fully revised and expanded edition. With an A-Z format of over 7,000 entries, more than 1,000 contributing authors provide a complete reference to cancer. The merging of different basic and clinical scientific disciplines towards the common goal of fighting cancer makes such a comprehensive reference source all the more timely.
Download or read book Toxicant Receptor Interactions written by Michael Denison and published by CRC Press. This book was released on 1998-08-10 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the toxic effects elicited by xenobiotics can be explained at the molecular level by their interaction with receptors or by disruption or interference with receptor-mediated signal transduction pathways. This volume describes molecular approaches and reviews of current research. It provides reviews of numerous research areas which are directly related to the analysis of the molecular mechanism by which xenobiotics modulate signal transduction and gene expression.
Download or read book The Regulation of Neuroregeneration in Zebrafish Danio Rerio written by Amy T. McCurley and published by . This book was released on 2010 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A lack of understanding of the molecular mechanisms essential for neuroregeneration is a major obstacle to the treatment of neural injury and neurodegenerative diseases. In contrast to adult mammals, teleost fish including zebrafish ( Danio rerio ) are able to successfully repair an injury to the central nervous system. Following optic nerve crush (ONX) or sham surgery (SHAM), established markers of neuroregeneration of retinal ganglion cell (RGC) axons (growth associated protein, gap43 ; alpha tubulin 1, tuba1 ) were measured by quantitative polymerase chain reaction (qPCR) analysis to verify the occurrence and timing of axonogenesis and synaptogenesis. Global gene expression patterns were documented by microarray analysis in zebrafish eye at intervals during neuroregeneration (6 hours-21 days). Of 15,600 total array transcripts, 4,748 were regulated during regeneration. 93% of 42 sequences tested were successfully validated by qPCR, attesting to the accuracy of the arrays. The number and magnitude of changes and the gene ontology of transcripts were functions of time post-ONX. Regulated sequences represented genes controlling cell adhesion, apoptosis, cell cycle activity, energy metabolism, and calcium signaling. Comparison of our dataset with published transcriptional profiles revealed cell types in eye other than RGCs have roles in neuroregeneration, and indicate an overlap with genes regulated in other regenerating zebrafish tissues . Investigation of regulatory pathways known to be neurotrophic/neuroprotective (estrogen-mediated) or neurotoxic (dioxin-mediated) identified gene markers of exposure and effect. Specifically, expression of aromatase and estrogen receptor (ER) genes was up-regulated very early in regeneration. Treatment with aromatase or ER inhibitors suppressed neuroregeneration-associated genes ( gap43 ) and revealed novel downstream estrogen targets ( grn1, sox11, stc2 ). Potential ER-dependent and -independent effects of estrogen were suggested. Conversely, genes known to mediate dioxin actions (aryl hydrocarbon receptor, AhR) and effects ( cyp1a, cyp1b1 ) were down-regulated during regeneration and dioxin reversed effects of ONX on regeneration-associated markers ( tuba1, wnt2, spond1, sox11 ). Results reported in these studies suggest a physiological role for AhR during neuroregeneration and potential crosstalk between AhR and estrogen signaling pathways. Results of this research advance the zebrafish model for studying molecular processes of neuroregeneration and provide an entry point for better understanding the underlying regulatory and toxic mechanisms.
Download or read book Statistical Analysis of Next Generation Sequencing Data written by Somnath Datta and published by Springer. This book was released on 2014-07-03 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Next Generation Sequencing (NGS) is the latest high throughput technology to revolutionize genomic research. NGS generates massive genomic datasets that play a key role in the big data phenomenon that surrounds us today. To extract signals from high-dimensional NGS data and make valid statistical inferences and predictions, novel data analytic and statistical techniques are needed. This book contains 20 chapters written by prominent statisticians working with NGS data. The topics range from basic preprocessing and analysis with NGS data to more complex genomic applications such as copy number variation and isoform expression detection. Research statisticians who want to learn about this growing and exciting area will find this book useful. In addition, many chapters from this book could be included in graduate-level classes in statistical bioinformatics for training future biostatisticians who will be expected to deal with genomic data in basic biomedical research, genomic clinical trials and personalized medicine. About the editors: Somnath Datta is Professor and Vice Chair of Bioinformatics and Biostatistics at the University of Louisville. He is Fellow of the American Statistical Association, Fellow of the Institute of Mathematical Statistics and Elected Member of the International Statistical Institute. He has contributed to numerous research areas in Statistics, Biostatistics and Bioinformatics. Dan Nettleton is Professor and Laurence H. Baker Endowed Chair of Biological Statistics in the Department of Statistics at Iowa State University. He is Fellow of the American Statistical Association and has published research on a variety of topics in statistics, biology and bioinformatics.
Download or read book Gene Regulation Epigenetics and Hormone Signaling written by Subhrangsu S. Mandal and published by John Wiley & Sons. This book was released on 2017-10-23 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first of its kind, this reference gives a comprehensive but concise introduction to epigenetics before covering the many interactions between hormone regulation and epigenetics at all levels. The contents are very well structured with no overlaps between chapters, and each one features supplementary material for use in presentations. Throughout, major emphasis is placed on pathological conditions, aiming at the many physiologists and developmental biologists who are familiar with the importance and mechanisms of hormone regulation but have a limited background in epigenetics.
Download or read book Applications of Toxicogenomic Technologies to Predictive Toxicology and Risk Assessment written by National Research Council and published by National Academies Press. This book was released on 2007-12-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new field of toxicogenomics presents a potentially powerful set of tools to better understand the health effects of exposures to toxicants in the environment. At the request of the National Institute of Environmental Health Sciences, the National Research Council assembled a committee to identify the benefits of toxicogenomics, the challenges to achieving them, and potential approaches to overcoming such challenges. The report concludes that realizing the potential of toxicogenomics to improve public health decisions will require a concerted effort to generate data, make use of existing data, and study data in new waysâ€"an effort requiring funding, interagency coordination, and data management strategies.
Download or read book Xenobiotics in Fish written by D.J. Smith and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture is rapidly becoming a major source of fish protein used to meet the nutritional needs of humans. As the aquaculture industry grows, exposure of farmed fish to environmental contaminants, and the need for chemical therapeutic agents for fish, will increase. This book is designed to bring together authorities worldwide on the regulation of environmental contaminants and food chemicals and researchers investigating the metabolism and disposition of foreign chemicals (xenobiotics) in fish species.
Download or read book Current Trends in Cancer Management written by Liliana Streba and published by BoD – Books on Demand. This book was released on 2019-09-25 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of cancer diagnosis, prognosis, and treatment is constantly advancing. From novel biomarkers to cutting-edge imaging solutions, changing chemotherapy protocols and novel immune-targeting agents, medical teams develop and test new ways to manage this ever-growing threat to the modern age. Imaging has been a reliable method for initial diagnosis and later surveillance of premalignant and cancerous lesions of the digestive tract. This book project aims to characterize the main diagnostic procedures and novel medical and surgical treatments, as well as provide an updated view on current guidelines, premalignant lesions management, and minimally invasive curative techniques.
Download or read book The Development of Sex Differences and Similarities in Behavior written by M. Haug and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: M. HAUG Universite Louis Pasteur, Laboratoire de Psychophysi%gie, URA 1295, 7, rue de /'Universite, 67000 Strasbourg, France This varied and impressive volume is a record of the major presentations at the NATO sponsored Advanced Research Workshop on The Development of Sex Differences and Similarities in Behaviour held at the Chateau de Bonas, Gers, France July 14-18, 1992. It is fitting that a meeting evaluating masculine and feminine 'characteristics' was located in the Gascony region immortalised in Alexandre Dumas epic, macho tale of The Three Musketeers. It is even more satisfying that Marc HAUG the French Director (a D' Artagnan equivalent) was ably assisted by a US/French Consortium of three co-Directors (Drs. Richard E. WHALEN, Claude ARON and Kathie L. OLSEN). The ARW also provided opportunities to explore the region around the Chateau, to appreciate the complex history of the area and to sample armagnac and other local gastronomic creations. A lively and varied cultural programme (classics to jazz) was also provided to maintain the interests and enthusiasms of the participants.
Download or read book Translational Immunotherapy of Brain Tumors written by John H. Sampson and published by Academic Press. This book was released on 2017-02-06 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Translational Immunotherapy of Brain Tumors gives researchers and practitioners an up-to-date and comprehensive overview of the field. Chapters include adoptive immunotherapy, immunosuppression, CAR therapy of brain tumors, and dendritic cell therapy for brain tumors. Very few agents have been shown to be efficacious in the treatment of malignant gliomas. Recently, there have been a number of studies demonstrating the potential success of immunotherapy for brain tumors. Immunotherapeutics are becoming the most frequent drugs to be used in cancer therapy. These new breakthroughs, now approved by the FDA, are a part of multiple phase III international trials and ongoing research in malignant glioma, meaning that the information in this cutting-edge book will be of great importance to practitioners and researchers alike. Comprehensive overview, providing an update on immunology, translational immunotherapy, and clinical trials relating to malignant gliomas Edited by a prominent neurosurgeon with contributions by leading researchers in the field Ideal resource for researchers and practitioners interested in learning about mechanisms that use the immune system to treat brain tumors
Download or read book Scientific Frontiers in Developmental Toxicology and Risk Assessment written by National Research Council and published by National Academies Press. This book was released on 2000-12-21 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Frontiers in Developmental Toxicology and Risk Assessment reviews advances made during the last 10-15 years in fields such as developmental biology, molecular biology, and genetics. It describes a novel approach for how these advances might be used in combination with existing methodologies to further the understanding of mechanisms of developmental toxicity, to improve the assessment of chemicals for their ability to cause developmental toxicity, and to improve risk assessment for developmental defects. For example, based on the recent advances, even the smallest, simplest laboratory animals such as the fruit fly, roundworm, and zebrafish might be able to serve as developmental toxicological models for human biological systems. Use of such organisms might allow for rapid and inexpensive testing of large numbers of chemicals for their potential to cause developmental toxicity; presently, there are little or no developmental toxicity data available for the majority of natural and manufactured chemicals in use. This new approach to developmental toxicology and risk assessment will require simultaneous research on several fronts by experts from multiple scientific disciplines, including developmental toxicologists, developmental biologists, geneticists, epidemiologists, and biostatisticians.
Download or read book The Epidermis in Wound Healing written by David T. Rovee and published by CRC Press. This book was released on 2003-12-29 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: New biological techniques and a revival of interest in both acute and chronic wound healing have led to an enormously improved understanding of the cellular and chemical complexities of the healing process. Exciting developments in the evolution of epidermal biology are creating new opportunities for research and clinical applications in wound heal
Download or read book Molecular Aspects of the Stress Response Chaperones Membranes and Networks written by Peter Csermely and published by Springer Science & Business Media. This book was released on 2007-08-09 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes a novel synthesis of the molecular aspects of the stress response and long term adaptation processes with the system biology approach of biological networks. Authored by an exciting mixture of top experts and young rising stars, it provides a comprehensive summary of the field and identifies future trends.
