Download or read book Defining Neuronal Identity Using MicroRNA mediated Reprogramming written by Matthew J. McCoy and published by . This book was released on 2018 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell fate reprogramming is transforming our understanding of the establishment and maintenance of cellular identity. In addition, reprogramming holds great promise to model diseases affecting cell types that are prohibitively difficult to study, such as human neurons. Overexpression of the brain-enriched microRNAs (miRNAs), miR-9/9* and miR-124 (miR-9/9*-124) results in reprogramming human somatic cells into neurons and has recently been used to generate specific neuronal subtypes affected in neurodegenerative disorders. However, the mechanisms governing the ability of miR-9/9*-124 to generate alternative subtypes of neurons remained unknown. In this thesis, I report that overexpressing miR-9/9*-124 triggers reconfiguration of chromatin accessibility, DNA methylation, and mRNA expression to induce a default neuronal state. MiR-9/9*-124-induced neurons (miNs) are functionally excitable and are uncommitted towards specific subtypes yet possess open chromatin at neuronal subtype-specific loci, suggesting such identity can be imparted by additional lineage-specific transcription factors. Consistently, we show ISL1 and LHX3 selectively drive conversion to a highly homogenous population of human spinal cord motor neurons. This work shows that modular synergism between miRNAs and neuronal subtype-specific transcription factors can drive lineage-specific neuronal reprogramming, thereby providing a general platform for high-efficiency generation of distinct subtypes of human neurons. Since many neurodegenerative diseases occur after development, modeling them requires reprogramming methods capable of generating functionally mature neurons. However, few robust molecular hallmarks existed to identify such neurons, or to compare efficiencies between reprogramming methods. Recent studies demonstrated that active long genes (>100 kb from transcription start to end) are highly enriched in neurons, which provided an opportunity to identify neurons based on the expression of these long genes. We therefore worked to develop an R package, LONGO, to analyze gene expression based on gene length. We developed a systematic analysis of long gene expression (LGE) in RNA-seq or microarray data to enable validation of neuronal identity at the single-cell and population levels. By combining this conceptual advancement and statistical tool in a user-friendly and interactive software package, we intended to encourage and simplify further investigation into LGE, particularly as it applies to validating and improving neuronal differentiation and reprogramming methodologies. Using this tool, I found by single-cell RNA sequencing that microRNA-mediated neuronal reprogramming of human adult fibroblasts yields a homogenous population of mature neurons, and that LGE distinguishes mature from immature neurons. I found that LGE correlates with expression of neuronal subunits of the Swi/Snf-like (BAF) chromatin remodeling complex, such as ACTL6B/BAF53b. Finally, I found that the loss of a functional neuronal BAF complex, as well as chemical inhibition of topoisomerase I, decreases LGE and reduces spontaneous electrical activity. Together, these results provide mechanistic insights into microRNA-mediated neuronal reprogramming, and demonstrate a transcriptomic feature of functionally mature neurons.
Download or read book Novel roles of non coding brain RNAs in health and disease written by Hermona Soreq and published by Frontiers E-books. This book was released on 2014-10-23 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-coding RNAs (ncRNAs), and in particular microRNAs are rapidly becoming the focus of research interest in numerous basic and translational fields, including brain research; and their importance for many aspects in brain functioning merits special discussion. The wide-scope, multi-targeted and highly efficient manner of ncRNA regulatory activities draws attention to this topic by many, but the available research and analysis tools and experimental protocols are still at their infancy, and calls for special discussion given their importance for many aspects in brain functioning. This eBook is correspondingly focused on the search for, identification and exploration of those non-coding RNAs whose activities modulate the multi-leveled functions of the eukaryotic brain. The different articles strive to cover novel approaches for identifying and establishing ncRNA-target relationships, provide state of the art reports of the affected neurotransmission pathways, describe inherited and acquired changes in ncRNA functioning and cover the use of ncRNA mimics and blockade tools for interference with their functions in health and disease of the brain. Non-coding RNAs are here to stay, and this exciting eBook provides a glimpse into their impact on our brain’s functioning at the physiology, cell biology, behavior and immune levels.
Download or read book Nuclear Reprogramming written by Kejin Hu and published by . This book was released on 2021 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides basic and advanced protocols on somatic cell nuclear transfer, induced pluripotent stem cells, and direct reprogramming of somatic cells into different functional cells. Chapters guide readers through methods on standardized procedures for characterization of induced pluripotent stem cells, as well as those for preparation of materials required for induction of pluripotent stem cells. Written in the highly successful Methods in Molecular Biology series format, 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 cutting-edge, Nuclear Reprogramming: Methods and Protocols aims to ensure successful results in the further study of this vital field. .
Download or read book Neural Reprogramming written by Henrik Ahlenius and published by Humana. This book was released on 2021-07-30 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed book brings together a number of state-of-the-art protocols to generate different types of neural cells through the use of reprogramming technologies. Additionally, the volume explores different aspects of functional evaluation and applications of reprogrammed neural cells as well as in silico methods to aid reprogramming efforts. 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 cutting-edge, Neural Reprogramming: Methods and Protocols provides ample experimental experience and guidance for anyone, be it experienced researcher or beginner, to generate, validate, and apply reprogrammed neural cells in their research.
Download or read book MicroRNAs in Medicine written by Charles H. Lawrie and published by John Wiley & Sons. This book was released on 2013-10-30 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: MicroRNAs in Medicine provides an access point into the current literature on microRNA for both scientists and clinicians, with an up-to-date look at what is happening in the emerging field of microRNAs and their relevance to medicine. Each chapter is a comprehensive review, with descriptions of the latest microRNA research written by international leaders in their field. Opening with an introduction to what microRNAs are and how they function, the book goes on to explore the role of microRNAs in normal physiological functions, infectious diseases, non-infectious diseases, cancer, circulating microRNAs as non-invasive biomarkers, and finally their potential as novel therapeutics. Including background information on the field as well as reviews of the latest research breakthroughs, MicroRNAs in Medicine is a one-stop source of information to satisfy the specialists and non-specialists alike, appealing to students, researchers, and clinicians interested in understanding the potential of microRNAs in medicine and research.
Download or read book Engineering Adult Neurogenesis and Gliogenesis written by Fraser James Sim and published by Frontiers Media SA. This book was released on 2021-02-25 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stem Cells in Reproductive Medicine written by Carlos Simón and published by Cambridge University Press. This book was released on 2013-07-04 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stem cell science has the potential to impact human reproductive medicine significantly - cutting edge technologies allow the production and regeneration of viable gametes from human stem cells offering potential to preciously infertile patients. Written by leading experts in the field Stem Cells in Reproductive Medicine brings together chapters on the genetics and epigenetics of both the male and female gametes as well as advice on the production and regeneration of gene cells in men and women, trophoblasts and endometrium from human embryonic and adult stem cells. Although focussing mainly on the practical elements of the use of stem cells in reproductive medicine, the book also contains a section on new developments in stem cell research. The book is essential reading for reproductive medicine clinicians, gynecologists and embryologists who want to keep abreast of practical developments in this rapidly developing field.
Download or read book Regulatory RNAs written by Bibekanand Mallick and published by Springer Science & Business Media. This book was released on 2012-02-01 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent progress in high-throughput technologies and genome wide transcriptome studies have lead to a significant scientific milestone of discovering non-coding RNAs (ncRNAs) which spans through a major portion of the genome. These RNAs most often act as riboregulators, and actively participate in the regulation of important cellular functions at the transcriptional and/or post-transcriptional levels rather than simply being an intermediated messenger between DNA and proteins. As the appreciation for the importance of ncRNAs continues to emerge, it is also increasingly clear that these play critical roles in gene regulatory processes during development and differentiation. Further, regulatory RNAs are useful biomarkers for diagnosis of diseases. Hence these RNA regulators are essential to the development of therapeutics. This book on “Regulatory RNAs” offers a comprehensive view on our current understanding of these regulatory RNAs viz. siRNA, miRNA, piRNA, snoRNA, long non-coding RNA, small RNA etc. It addresses both the biogenesis and mechanism of action of regulatory RNAs with a primary focus on their annotation, experimental methodologies (microarray, next-gen sequencing etc.) for their discovery, computational tools for their prediction, and above all, applications of these revolutionary regulatory molecules in understanding biological systems and diseases, including therapeutics. This comprehensive volume is intended for readers with research or teaching interests in ncRNA biology and will provide a major information resource on current research in the fast-moving fields of RNA and gene expression regulation. Cutting-edge and concise, “Regulatory RNAs: Basics, Methods and Applications” promises to support vital research in the field of regulatory RNAs, ever-continuing to grow rapidly and gain increasing importance in basic and translational biology.
Download or read book Handbook of Neurobehavioral Genetics and Phenotyping written by Valter Tucci and published by John Wiley & Sons. This book was released on 2017-03-06 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Behavioral Genetics and Phenotyping represents an integrative approach to neurobehavioural genetics; worldwide experts in their field will review all chapters. Advanced overviews of neurobehavioural characteristics will add immense value to the investigation of animal mutants and provide unique information about the genetics and behavioural understanding of animal models, under both normal and pathological conditions. Cross-species comparisons of neurobehavioural phenotypes will pave the way for an evolutionary understanding of behaviour. Moreover, while biological sciences are progressing towards a holistic approach to investigate the complexity of organisms (i.e., “systems biology” approach), an integrated analysis of behavioural phenotyping is still lacking. The Handbook of Behavioral Genetics and Phenotyping strengthens the cross-talk within disciplines that investigate the fundamental basis of behaviour and genetics. This will be the first volume in which traditionally distant fields including genomics, behaviour, electrophysiology, neuroeconomics, and computational neuroscience, among others, are evaluated together and simultaneously accounted for during discussions of future perspectives.
Download or read book MicroRNAs written by Krishnarao Appasani and published by Cambridge University Press. This book was released on 2009-08-20 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: MicroRNAs (miRNAs) are RNA molecules, conserved by evolution, that regulate gene expressions and their recent discovery is revolutionising both basic biomedical research and drug discovery. Expression levels of MiRNAs have been found to vary between tissues and with developmental stages and hence evaluation of the global expression of miRNAs potentially provides opportunities to identify regulatory points for many different biological processes. This wide-ranging reference work, written by leading experts from both academia and industry, will be an invaluable resource for all those wishing to use miRNA techniques in their own research, from graduate students, post-docs and researchers in academia to those working in R&D in biotechnology and pharmaceutical companies who need to understand this emerging technology. From the discovery of miRNAs and their functions to their detection and role in disease biology, this volume uniquely integrates the basic science with industry application towards drug validation, diagnostic and therapeutic development. Forewords by: Sidney Altman, Yale University, Winner of the Nobel Prize in Chemistry, 1989 and Victor R. Ambros, Dartmouth Medical School, Co-discoverer of MicroRNAs
Download or read book Enteric Glia written by Brian D. Gulbransen and published by Biota Publishing. This book was released on 2014-07-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enteric nervous system (ENS) is a complex neural network embedded in the gut wall that orchestrates the reflex behaviors of the intestine. The ENS is often referred to as the “little brain” in the gut because the ENS is more similar in size, complexity and autonomy to the central nervous system (CNS) than other components of the autonomic nervous system. Like the brain, the ENS is composed of neurons that are surrounded by glial cells. Enteric glia are a unique type of peripheral glia that are similar to astrocytes of the CNS. Yet enteric glial cells also differ from astrocytes in many important ways. The roles of enteric glial cell populations in the gut are beginning to come to light and recent evidence implicates enteric glia in almost every aspect of gastrointestinal physiology and pathophysiology. However, elucidating the exact mechanisms by which enteric glia influence gastrointestinal physiology and identifying how those roles are altered during gastrointestinal pathophysiology remain areas of intense research. The purpose of this e-book is to provide an introduction to enteric glial cells and to act as a resource for ongoing studies on this fascinating population of glia. Table of Contents: Introduction / A Historical Perspective on Enteric Glia / Enteric Glia: The Astroglia of the Gut / Molecular Composition of Enteric Glia / Development of Enteric Glia / Functional Roles of Enteric Glia / Enteric Glia and Disease Processes in the Gut / Concluding Remarks / References / Author Biography
Download or read book Neuronal Identity from Fate Specification to Function written by Nikolaos Konstantinides and published by Frontiers Media SA. This book was released on 2023-02-02 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Cloning written by Jose Cibelli and published by Academic Press. This book was released on 2013-09-24 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Cloning, Second Edition is the fully revised edition of the authoritative book on the science of cloning. The book presents the basic biological mechanisms of how cloning works and progresses to discuss current and potential applications in basic biology, agriculture, biotechnology, and medicine. Beginning with the history and theory behind cloning, the book goes on to examine methods of micromanipulation, nuclear transfer, genetic modification, and pregnancy and neonatal care of cloned animals. The cloning of various species—including mice, sheep, cattle, and non-mammals—is considered as well. The Editors have been involved in a number of breakthroughs using cloning technique, including the first demonstration that cloning works in differentiated cells done by the Recipient of the 2012 Nobel Prize for Physiology or Medicine – Dr John Gurdon; the cloning of the first mammal from a somatic cell – Drs Keith Campbell and Ian Wilmut; the demonstration that cloning can reset the biological clock - Drs Michael West and Robert Lanza; the demonstration that a terminally differentiated cell can give rise to a whole new individual – Dr Rudolf Jaenisch and the cloning of the first transgenic bovine from a differentiated cell – Dr Jose Cibelli. The majority of the contributing authors are the principal investigators on each of the animal species cloned to date and are expertly qualified to present the state-of-the-art information in their respective areas. - First and most comprehensive book on animal cloning, 100% revised - Describes an in-depth analysis of current limitations of the technology and research areas to explore - Offers cloning applications on basic biology, agriculture, biotechnology, and medicine
Download or read book Regeneration and Brain Repair written by Daniella Rylander Ottosson and published by Frontiers Media SA. This book was released on 2021-07-15 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frontiers in Developmental Biology written by Robert A. Meyers and published by John Wiley & Sons. This book was released on 2019-05-28 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: This topical volume in the respected Encyclopedia series is the first in many years to bring together all important aspects of developmental biology in one source, from morphogenesis and organogenesis, via epigenetic regulation of gene expression to evolutionary developmental biology. The editor-in-chief has assembled an outstanding team of contributors to review these topics, creating an authoritative work for many years to come. The result is a unique, top-level reference in developmental biology for researchers, students and professionals alike.
Download or read book MicroRNA Protocols written by Shao-Yao Ying and published by Springer Science & Business Media. This book was released on 2008-02-04 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: MicroRNA Protocols provides diverse, novel, and useful descriptions of miRNAs in several species, including plants, worms, flies, fish, chicks, mice, and humans. These include some useful adaptations and applications that could be relevant to the wider research community who are already familiar with the identification of miRNAs. This volume will stimulate the reader to explore diverse ways to understanding the mechanism in which miRNAs facilitate the molecular aspects of the biomedical research.
Download or read book Genomic Regulatory Systems written by Eric H. Davidson and published by Elsevier. This book was released on 2001-01-24 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction between biology and evolution has been the subject of great interest in recent years. Because evolution is such a highly debated topic, a biologically oriented discussion will appeal not only to scientists and biologists but also to the interested lay person. This topic will always be a subject of controversy and therefore any breaking information regarding it is of great interest.The author is a recognized expert in the field of developmental biology and has been instrumental in elucidating the relationship between biology and evolution. The study of evolution is of interest to many different kinds of people and Genomic Regulatory Systems: In Development and Evolution is written at a level that is very easy to read and understand even for the nonscientist.* Contents Include* Regulatory Hardwiring: A Brief Overview of the Genomic Control Apparatus and Its Causal Role in Development and Evolution * Inside the Cis-Regulatory Module: Control Logic and How the Regulatory Environment Is Transduced into Spatial Patterns of Gene Expression* Regulation of Direct Cell-Type Specification in Early Development* The Secret of the Bilaterians: Abstract Regulatory Design in Building Adult Body Parts* Changes That Make New Forms: Gene Regulatory Systems and the Evolution of Body Plans
