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Dna Modifications In The Brain
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Book Synopsis DNA Modifications in the Brain by : Timothy W Bredy
Download or read book DNA Modifications in the Brain written by Timothy W Bredy and published by Academic Press. This book was released on 2016-12-23 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA Modifications in the Brain: Neuroepigenetic Regulation of Gene Expression begins with an historical overview of the early discoveries surrounding DNA methylation in the mammalian brain and then explores the evidence supporting a role for this epigenetic mechanism in controlling gene expression programs across the lifespan in both normal and diseased states. Chapters describe new directions and technological advances, and provide an overview of what the future holds for this exciting new field. This book is ideal for medical, graduate and advanced undergraduate students, but is also a great resource for researchers who need a broad introduction to the dynamic nature of DNA that sheds light on evolving concepts of gene-environment interaction and their effects on adaptation and neuropsychiatric disease. Provides a comprehensive overview of the many facets of DNA modifications Discusses the impact of this dynamic epigenetic mechanism across brain development and lifespan at behavioral, cognitive, molecular and genetic levels Contains contributions by influential leaders in the field Edited by a Neuroscientist to further promote synthesis between epigenetics, neuroscience, and clinical relevance
Book Synopsis Epigenetics, Brain and Behavior by : Paolo Sassone Corsi
Download or read book Epigenetics, Brain and Behavior written by Paolo Sassone Corsi and published by Springer Science & Business Media. This book was released on 2012-10-19 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen spectacular advances in the filed of epigenetics. These have attracted the interest of researchers in many fields and evidence connecting epigentic regulation to brain functions has been accumulationg. Neurons daily convert a variety of external stimuli into rapid or long-lasting changes in gene expression. A variety of studies have centered on the molcular mechanisms implicated in epigentic control and how these may operte in concert. It will be critical to unravel how specifity is achieved. The focus of this volume is on critical epigenetic regulation and chromatin remodeling events that occur in the nervous system and on the presumed mechanisms that operate within neurons to translate them into long-lasting neuronal responses.
Download or read book Brain's Hidden Switches written by Veron and published by Tredition Gmbh. This book was released on 2024-05-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain's Hidden Switches: Beyond DNA Our understanding of the brain has traditionally focused on DNA, the blueprint of life. However, recent research unveils a fascinating truth - DNA is just the first act in the grand play of brain function. Beyond the rigid code of genes lies a hidden layer of control - epigenetic mechanisms that act as the brain's hidden switches, dynamically fine-tuning its operations. Imagine a beautifully composed symphony. The sheet music (DNA) outlines the melody and harmony, but the conductor (epigenetics) brings the music to life, adjusting tempo, volume, and individual instrument contributions to create a nuanced and dynamic performance. This analogy aptly describes the interplay between DNA and epigenetics in the brain. Epigenetics, literally meaning "above genetics," refers to modifications that influence gene expression without altering the underlying DNA sequence. These modifications act like dimmer switches on genes, controlling how much protein (the functional output of genes) is produced in different brain regions and throughout an organism's lifespan. There are two key epigenetic mechanisms at play: DNA methylation and histone modifications. DNA methylation involves adding a chemical tag to DNA, often silencing gene activity. Conversely, histone modifications loosen or tighten the packaging of DNA around proteins called histones. Tightly packed DNA is less accessible for protein production, while looser packaging allows for increased gene expression.
Book Synopsis Environmental Epigenetics by : L. Joseph Su
Download or read book Environmental Epigenetics written by L. Joseph Su and published by Springer. This book was released on 2015-05-18 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the toxicological and health implications of environmental epigenetics and provides knowledge through an interdisciplinary approach. Included in this volume are chapters outlining various environmental risk factors such as phthalates and dietary components, life states such as pregnancy and ageing, hormonal and metabolic considerations and specific disease risks such as cancer cardiovascular diseases and other non-communicable diseases. Environmental Epigenetics imparts integrative knowledge of the science of epigenetics and the issues raised in environmental epidemiology. This book is intended to serve both as a reference compendium on environmental epigenetics for scientists in academia, industry and laboratories and as a textbook for graduate level environmental health courses. Environmental Epigenetics imparts integrative knowledge of the science of epigenetics and the issues raised in environmental epidemiology. This book is intended to serve both as a reference compendium on environmental epigenetics for scientists in academia, industry and laboratories and as a textbook for graduate level environmental health courses.
Book Synopsis Brain, Behavior and Epigenetics by : Arturas Petronis
Download or read book Brain, Behavior and Epigenetics written by Arturas Petronis and published by Springer Science & Business Media. This book was released on 2011-05-19 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomedical research in the first decade of the 21st century has been marked by a rapidly growing interest in epigenetics. The reasons for this are numerous, but primarily it stems from the mounting realization that research programs focused solely on DNA sequence variation, despite their breadth and depth, are unlikely to address all fundamental aspects of human biology. Some questions are evident even to non-biologists. How does a single zygote develop into a complex multicellular organism composed of dozens of different tissues and hundreds of cell types, all genetically identical but performing very different functions? Why do monozygotic twins, despite their stunning external similarities, often exhibit significant differences in personality and predisposition to disease? If environmental factors are solely the cause of such variation, why are similar differences also observed between genetically identical animals housed in a uniform environment? Over the last couple of decades, epigenetics has undergone a significant metamorphosis from an abstract developmental theory to a very dynamic and rapidly developing branch of molecular biology. This volume represents a compilation of our current understanding about the key aspects of epigenetic processes in the brain and their role in behavior. The chapters in this book bring together some of the leading researchers in the field of behavioral epigenetics. They explore many of the epigenetic processes which operate or may be operating to mediate neurobiological functions in the brain and describe how perturbations to these systems may play a key role in mediating behavior and the origin of brain diseases.
Book Synopsis Epigenetic Epidemiology by : Karin B. Michels
Download or read book Epigenetic Epidemiology written by Karin B. Michels and published by Springer Science & Business Media. This book was released on 2012-01-03 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exploding field of epigenetics is challenging the dogma of traditional Mendelian inheritance. Epigenetics plays an important role in shaping who we are and contributes to our prospects of health and disease. While early epigenetic research focused on plant and animal models and in vitro experiments, population-based epidemiologic studies increasingly incorporate epigenetic components. The relevance of epigenetic marks, such as DNA methylation, genomic imprinting, and histone modification for disease causation has yet to be fully explored. This book covers the basic concepts of epigenetic epidemiology, discusses challenges in study design, analysis, and interpretation, epigenetic laboratory techniques, the influence of of age and environmental factors on shaping the epigenome, the role of epigenetics in the developmental origins hypothesis, and provides the state of the art on the epigenetic epidemiology of various health conditions including childhood syndromes, cancer, infectious diseases, inflammation and rheumatoid arthritis, asthma, autism and other neurodevelopmental disorders, psychiatric disorders, diabetes, obesity and metabolic disorders, and atherosclerosis. With contributions from: Peter Jones, Jean-Pierre Issa, Gavin Kelsey, Robert Waterland, and many other experts in epigenetics!
Book Synopsis Epigenetics in Psychiatry by : Jacob Peedicayil
Download or read book Epigenetics in Psychiatry written by Jacob Peedicayil and published by Academic Press. This book was released on 2021-08-21 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epigenetics in Psychiatry, Second Edition covers all major areas of psychiatry in which extensive epigenetic research has been performed, fully encompassing a diverse and maturing field, including drug addiction, bipolar disorder, epidemiology, cognitive disorders, and the uses of putative epigenetic-based psychotropic drugs. Uniquely, each chapter correlates epigenetics with relevant advances across genomics, transcriptomics, and proteomics. The book acts as a catalyst for further research in this growing area of psychiatry. This new edition has been fully revised to address recent advances in epigenetic understanding of psychiatric disorders, evoking data consortia (e.g., CommonMind, ATAC-seq), single cell analysis, and epigenome-wide association studies to empower new research. The book also examines epigenetic effects of the microbiome on psychiatric disorders, and the use of neuroimaging in studying the role of epigenetic mechanisms of gene expression. Ongoing advances in epigenetic therapy are explored in-depth. Fully revised to discuss new areas of research across neuronal stem cells, cognitive disorders, and transgenerational epigenetics in psychiatric disease Relates broad advances in psychiatric epigenetics to a modern understanding of the genome, transcriptome, and proteins Catalyzes knowledge discovery in both basic epigenetic biology and epigenetic targets for drug discovery Provides guidance in research methods and protocols, as well how to employ data from consortia, single cell analysis, and epigenome-wide association studies (EWAS) Features chapter contributions from international leaders in the field
Book Synopsis Genome-scale Studies of Dynamic DNA Methylation in Mammalian Brain Cells by : Christopher Lee Keown
Download or read book Genome-scale Studies of Dynamic DNA Methylation in Mammalian Brain Cells written by Christopher Lee Keown and published by . This book was released on 2018 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developmental processes, genes and environmental factors interact to produce changes in cognition and behavior over the lifespan of an individual. However, the underlying molecular genetic mechanisms that mediate these changes remain to be fully elucidated. DNA methylation is an epigenetic mechanism that defines cell identity and helps regulate gene expression. DNA methylation is dynamic over development and has been shown to mediate experience-dependent changes, including those resulting from learning and memory and early life adversity. Although methylation mainly occurs at genomic cytosines in the CG dinucleotide context, methylation at non-CG sites was recently found in brain tissue. Non-CG methylation is specifically enriched in neurons and accumulates during the early childhood stages of brain development. The biological impact of non-CG methylation in regulating gene expression and regulating cellular function, if any, remains unclear. A major challenge for addressing this question is the complexity and scale of the DNA methylation landscape, which includes nearly one billion cytosines throughout the genome that are potential sites of modification in every cell. Targeted studies of specific candidate genes and genomic loci do not elucidate the overall configuration of the cellular epigenome. Techniques for comprehensively mapping the genome-wide distribution of DNA methylation are powerful, but they require sophisticated new computational methods of analysis that can reliably distinguish and statistically validate epigenomic differences related to developmental and environmental factors. In this thesis we develop new approaches to comprehensively analyze DNA methylation throughout the genome and with single base resolution in order to better characterize the role of CG methylation and elucidate the potential role of CH methylation in mammalian brain cells. First, we consider the impact of enriched early life (peri-pubertal) experience on DNA methylation and gene expression in the dentate gyrus of the hippocampus. In addition to its role in experience-dependent gene regulation, DNA methylation also plays a key role in innate developmental processes, including female X chromosome inactivation. We provide the first allele-specific DNA methylomes from the active and inactive X chromosomes in female brain, and use comprehensive genomic analyses to gain insight into the functional relationship between allele-specific DNA methylation and transcription. These two studies provide new evidence of the dynamic changes in DNA methylation in whole brain tissue caused by environmental and innate developmental factors. However, they do not address the heterogeneity of brain cell types, a hallmark of mammalian brain organization. To address the role of DNA methylation in brain cell diversity, we develop computational methods to analyze data from a new assay that measures single cell methylomes. Using these data, we show that brain cell methylomes can be clustered and used to assess neuronal heterogeneity in the frontal cortex of mouse and human. Upon clustering cells, we are able to gain insight into the role of methylation in the establishment and maintenance of cellular identity in neuronal types. Overall, this thesis adds to the increasing evidence that DNA methylation is a cell type-specific, dynamic epigenomic modification of brain cells that is impacted by, and may in turn help to regulate, neuronal development and adaptation. In addition, this thesis provides new computational methods for analyzing large-scale, whole-genome DNA methylation data sets and demonstrates their use in uncovering new insights into the mammalian brain epigenome.
Book Synopsis Translational Research in Traumatic Brain Injury by : Daniel Laskowitz
Download or read book Translational Research in Traumatic Brain Injury written by Daniel Laskowitz and published by CRC Press. This book was released on 2016-04-21 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traumatic brain injury (TBI) remains a significant source of death and permanent disability, contributing to nearly one-third of all injury related deaths in the United States and exacting a profound personal and economic toll. Despite the increased resources that have recently been brought to bear to improve our understanding of TBI, the developme
Book Synopsis Epigenetics of Aging by : Trygve O. Tollefsbol
Download or read book Epigenetics of Aging written by Trygve O. Tollefsbol and published by Springer Science & Business Media. This book was released on 2009-11-11 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have indicated that epigenetic processes may play a major role in both cellular and organismal aging. These epigenetic processes include not only DNA methylation and histone modifications, but also extend to many other epigenetic mediators such as the polycomb group proteins, chromosomal position effects, and noncoding RNA. The topics of this book range from fundamental changes in DNA methylation in aging to the most recent research on intervention into epigenetic modifications to modulate the aging process. The major topics of epigenetics and aging covered in this book are: 1) DNA methylation and histone modifications in aging; 2) Other epigenetic processes and aging; 3) Impact of epigenetics on aging; 4) Epigenetics of age-related diseases; 5) Epigenetic interventions and aging: and 6) Future directions in epigenetic aging research. The most studied of epigenetic processes, DNA methylation, has been associated with cellular aging and aging of organisms for many years. It is now apparent that both global and gene-specific alterations occur not only in DNA methylation during aging, but also in several histone alterations. Many epigenetic alterations can have an impact on aging processes such as stem cell aging, control of telomerase, modifications of telomeres, and epigenetic drift can impact the aging process as evident in the recent studies of aging monozygotic twins. Numerous age-related diseases are affected by epigenetic mechanisms. For example, recent studies have shown that DNA methylation is altered in Alzheimer’s disease and autoimmunity. Other prevalent diseases that have been associated with age-related epigenetic changes include cancer and diabetes. Paternal age and epigenetic changes appear to have an effect on schizophrenia and epigenetic silencing has been associated with several of the progeroid syndromes of premature aging. Moreover, the impact of dietary or drug intervention into epigenetic processes as they affect normal aging or age-related diseases is becoming increasingly feasible.
Book Synopsis The Neurobiological Basis of Suicide by : Yogesh Dwivedi
Download or read book The Neurobiological Basis of Suicide written by Yogesh Dwivedi and published by CRC Press. This book was released on 2012-06-25 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: With recent studies using genetic, epigenetic, and other molecular and neurochemical approaches, a new era has begun in understanding pathophysiology of suicide. Emerging evidence suggests that neurobiological factors are not only critical in providing potential risk factors but also provide a promising approach to develop more effective treatment and prevention strategies. The Neurobiological Basis of Suicide discusses the most recent findings in suicide neurobiology. Psychological, psychosocial, and cultural factors are important in determining the risk factors for suicide; however, they offer weak prediction and can be of little clinical use. Interestingly, cognitive characteristics are different among depressed suicidal and depressed nonsuicidal subjects, and could be involved in the development of suicidal behavior. The characterization of the neurobiological basis of suicide is in delineating the risk factors associated with suicide. The Neurobiological Basis of Suicide focuses on how and why these neurobiological factors are crucial in the pathogenic mechanisms of suicidal behavior and how these findings can be transformed into potential therapeutic applications.
Book Synopsis Chromatin Signaling and Neurological Disorders by :
Download or read book Chromatin Signaling and Neurological Disorders written by and published by Academic Press. This book was released on 2019-05-24 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromatin Signaling and Neurological Disorders, Volume Seven, explores our current understanding of how chromatin signaling regulates access to genetic information, and how their aberrant regulation can contribute to neurological disorders. Researchers, students and clinicians will not only gain a strong grounding on the relationship between chromatin signaling and neurological disorders, but they'll also discover approaches to better interpret and employ new diagnostic studies and epigenetic-based therapies. A diverse range of chapters from international experts speaks to the basis of chromatin and epigenetic signaling pathways and specific chromatin signaling factors that regulate a range of diseases. In addition to the basic science of chromatin signaling factors, each disease-specific chapter speaks to the translational or clinical significance of recent findings, along with important implications for the development of epigenetics-based therapeutics. Common themes of translational significance are also identified across disease types, as well as the future potential of chromatin signaling research. Examines specific chromatin signaling factors that regulate spinal muscular atrophy, ulbospinal muscular atrophy, amyotrophic lateral sclerosis, Parkinson's disease, Huntington's disease, multiple sclerosis, Angelman syndrome, Rader-Willi syndrome, and more Contains chapter contributions from international experts who speak to the clinical significance of recent findings and the implications for the development of epigenetics-based therapeutics Provides researchers, students and clinicians with approaches to better interpret and employ new diagnostic studies for treating neurological disorders
Download or read book DNA Modifications written by Alexey Ruzov and published by Humana. This book was released on 2020-08-22 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of methods and experimental protocols that are currently used to analyze the presence and abundance of non-canonical DNA nucleotides in different biological systems. Focusing particularly on the newly discovered and less studied DNA modifications that are enzymatically produced and are likely to play specific roles in various biological processes, the volume explores chromatography- and mass spectrometry-based techniques for the detection and quantification of DNA modifications, antibody-based approaches to study their spatial distribution in different cells and tissues, and methods to analyze their genomic distribution with the help of bioinformatics tools that interrogate the corresponding datasets. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and comprehensive, DNA Modifications: Methods and Protocols serves as an ideal guide to research scientists and PhD students in this rapidly developing discipline, and, thus, will ultimately contribute to deciphering the roles of non-canonical DNA nucleotides in different biological systems.
Book Synopsis Increased DNA Modification in the Alzheimer's Disease Human Brain by : Natacha K.M.G. Coppieters 't Wallant
Download or read book Increased DNA Modification in the Alzheimer's Disease Human Brain written by Natacha K.M.G. Coppieters 't Wallant and published by . This book was released on 2015 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Described for the first time in 1906, Alzheimer's disease (AD) remains the most prevalent form of dementia throughout the world. AD is a complex neurodegenerative disease characterised by the progressive decline in cognitive functions, neuronal cell loss, and by the presence of amyloid beta (Abeta) plaques and neurofibrillary tangles that are composed of hyperphosphorylated tau, in the brain. Only a small percentage of the AD cases can be attributed to mutations in key genes that are involved in the pathophysiology of the disease. The vast majority of AD cases are sporadic, and the aetiology of these cases remains unknown. However, there is evidence that an alteration in epigenetics is involved in the pathophysiology of AD. Amongst the epigenetic markers, 5- methylcytosine (5mC) has been the most studied in AD. Previous human studies reported both increases and decreases in the level of 5mC at specific loci of genes that are involved in the pathophysiology of AD. However, only a few studies have investigated 5mC at global levels, and reported DNA hypomethylation in the AD brain. 5-hydroxymethylcytosine (5hmC), the oxidised form of 5mC, has been recently recognised as an epigenetic marker. The involvement of 5hmC in AD has not been investigated yet. In the present study, specific antibodies were used to study 5mC and 5hmC at global levels in two brain regions that are vulnerable to AD: the middle frontal gyrus and the middle temporal gyrus. Immunohistochemistry combined with high-throughput image analysis was used as the method to quantify levels of 5mC and 5hmC in post-mortem human brain tissue. The results demonstrated that DNA was globally hypermethylated and hyperhydroxymethylated in neurons from the AD brain. Increased levels of 5mC and 5hmC were significantly correlated with Abeta, tau, and ubiquitin loads; thus, demonstrating that these epigenetic changes were related to the progression of the disease. Dnmt1 and Dnmt3b, two of the enzymes involved in the regulation of 5mC were studied using the same approach as for 5mC and 5hmC. Results demonstrated that Dnmt1 was increased in the AD MTG, whereas Dnmt3b was decreased in the AD MTG. In vitro models of human brain cells were validated for the study of 5mC and 5hmC, and were used to test the effect of Abeta and 5-aza-2'-deoxycytidine (AzaC), a well-known demethylating agent, on levels of 5mC and 5hmC. Results demonstrated that Abeta can induce DNA hypermethylation and hyperhydroxymethylation in human precursor cells, but not in neurons and astrocytes differentiated from them. Finally, this study provided evidence that in addition to its effect on 5mC, AzaC is a strong inducer of 5hmC. Altogether, the results obtained in the present study clearly demonstrated the involvement of 5mC and 5hmC in AD, and provide the basis for the development of new diagnostic methods and therapeutic approaches.
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 Role of RNA and DNA in Brain Function by : Antonio Giuditta
Download or read book Role of RNA and DNA in Brain Function written by Antonio Giuditta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: There was once an old Chinese man working on a hill with a boy. On the plain, near the sea, rested the village, the inhabitants eagerly engaged in their daily activities. Suddenly, the old man noticed that a huge wave, far distant in the sea, was approaching the shore endangering all. The only safe place was the hill. So, he began waving his hands and screaming aloud, to no avail. The villagers were too busy with their own work and paid little heed to the old man, who was considered a bit eccentric. But soon flames were on the hill, the wheat fields ablaze. The old man had resorted to this ultimate step to alert his fellow citizens. Now, they all went running towards him, angry about their burning crop, and in the process, avoided the imminent danger. For some mysterious reason, my mind focused on this story prior to the Symposium on the Role of DNA, which took place in Ravello, Italy at the end of May 1985. Having made a call for people to meet and reflect for a few days, the analogy began to take shape. Ravello was indeed a hill, magically overlooking the sea from medieval quarters. True, its countryside is filled with vineyards, not wheat fields, but that is an improvement on the story. However, what was the wave? Perhaps, the growing amount of data on cloned brain genes that threatens to engulf neurobiologists.
Book Synopsis Handbook of Nutrition, Diet, and Epigenetics by : Vinood B. Patel
Download or read book Handbook of Nutrition, Diet, and Epigenetics written by Vinood B. Patel and published by Springer. This book was released on 2019-02-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multivolume reference work addresses the fact that the well being of humankind is predicated not only on individuals receiving adequate nutrition but also on their genetic makeup. The work includes more than 100 chapters organized in the following major sections: Introduction and Overview; Epigenetics of Organs and Diseases in Relation to Diet and Nutrition; Detailed Processes in Epigenetics of Diet and Nutrition; Modulating Epigenetics with Diet and Nutrition; and Practical Techniques. While it is well known that genes may encode proteins responsible for structural and dynamic components, there is an increasing body of evidence to suggest that nutrition itself may alter the way in which genes are expressed via the process of epigenetics. This is where chemically imposed alteration in the DNA sequence occurs or where the functional expression of DNA is modulated. This may include changes in DNA methylation, non-coding RNA, chromatin, histone acetylation or methylation, and genomic imprinting. Knowledge regarding the number of dietary components that impact on epigenetic processes is increasing almost daily. Marshalling all the information on the complex relationships between diet, nutrition, and epigenetic processes is somewhat difficult due to the wide myriad of material. It is for this reason that the present work has been compiled.
