Download or read book EGO 1 an Essential Caenorhabditis Elegans RNA directed RNA Polymerase Modulates Gene Expression Through the Messenger RNA templated Production of Short Antisense Effector RNAs written by Jay Mahesh Maniar and published by Stanford University. This book was released on 2010 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of the germline in Caenorhabditis elegans is a complex process involving the regulation of thousands of genes in a coordinated manner. These genes must direct the regulation of cell proliferation, meiosis, and sex determination, as well as gamete formation and fertilization. Several genes required for small RNA biogenesis and function are also required for the proper organization and development of the germline. EGO-1 is a putative RNA-directed RNA polymerase (RdRP) that is required for C. elegans germ-line development and efficient RNAi of germ-line expressed genes. Additionally, ego-1 mutants have been shown to exhibit defects in heterochromatin assembly on unpaired DNA and proper chromosome segregation during meiosis. Despite our understanding of the morphology of ego-1 mutant worms, it has remained unclear how the loss of a putative RdRP can cause such dramatic phenotypes in the C. elegans germline. That is, what role does EGO-1 play in promoting the development of the germline? There is strong evidence for the requirement of the C. elegans RdRP RRF-3 in producing endogenous small RNAs that target mRNA produced from specific genes. Additionally, there is evidence that EGO-1 may interact directly with chromatin. The questions become what target (or perhaps targets) is being disrupted in the ego-1 mutant and are they being disrupted at the chromatin or RNA level? Using high-throughput small RNA and messenger RNA sequencing we found that EGO-1 is required to produce small RNAs antisense to a number of germline-expressed genes through several developmental stages. We found that these genes fall into several classes including genes required for kinetochore (klp-7) and nuclear pore (npp-3) assembly, as well as the production of histone-modifying (set-21) and centromeric proteins (hcp-3). We also found several RNAi-related genes to be targets of EGO-1 (csr-1, mut-14, mut-16, prg-1, tsn-1). Finally, we show a strong correlation between the loss of small RNAs and the rise of mRNA levels in ego-1(-) animals.
Download or read book EGO 1 an Essential Caenorhabditis Elegans RNA directed RNA Polymerase Modulates Gene Expression Through the Messenger RNA templated Production of Short Antisense Effector RNAs written by Jay Mahesh Maniar and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of the germline in Caenorhabditis elegans is a complex process involving the regulation of thousands of genes in a coordinated manner. These genes must direct the regulation of cell proliferation, meiosis, and sex determination, as well as gamete formation and fertilization. Several genes required for small RNA biogenesis and function are also required for the proper organization and development of the germline. EGO-1 is a putative RNA-directed RNA polymerase (RdRP) that is required for C. elegans germ-line development and efficient RNAi of germ-line expressed genes. Additionally, ego-1 mutants have been shown to exhibit defects in heterochromatin assembly on unpaired DNA and proper chromosome segregation during meiosis. Despite our understanding of the morphology of ego-1 mutant worms, it has remained unclear how the loss of a putative RdRP can cause such dramatic phenotypes in the C. elegans germline. That is, what role does EGO-1 play in promoting the development of the germline? There is strong evidence for the requirement of the C. elegans RdRP RRF-3 in producing endogenous small RNAs that target mRNA produced from specific genes. Additionally, there is evidence that EGO-1 may interact directly with chromatin. The questions become what target (or perhaps targets) is being disrupted in the ego-1 mutant and are they being disrupted at the chromatin or RNA level? Using high-throughput small RNA and messenger RNA sequencing we found that EGO-1 is required to produce small RNAs antisense to a number of germline-expressed genes through several developmental stages. We found that these genes fall into several classes including genes required for kinetochore (klp-7) and nuclear pore (npp-3) assembly, as well as the production of histone-modifying (set-21) and centromeric proteins (hcp-3). We also found several RNAi-related genes to be targets of EGO-1 (csr-1, mut-14, mut-16, prg-1, tsn-1). Finally, we show a strong correlation between the loss of small RNAs and the rise of mRNA levels in ego-1( - ) animals.
Download or read book Industrial Pharmaceutical Biotechnology written by Heinrich Klefenz and published by Wiley-VCH. This book was released on 2002-04-22 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on pharmaceutical biotechnology as a key area of life sciences. The complete range of concepts, processes and technologies of biotechnology is applied in modern industrial pharmaceutical research, development and production. The results of genome sequencing and studies of biological-genetic function are combined with chemical, micro-electronic and microsystem technology to produce medical devices and diagnostic biochips. A multitude of biologically active molecules is expanded by additional novel structures created with newly arranged gene clusters and bio-catalytic chemical processes. New organisational structures in the co-operation of institutes, companies and networks enable faster knowledge and product development and immediate application of the results of research and process development. This book is the ideal source of information for scientists and engineers in research and development, for decision-makers in biotech, pharma and chemical corporations, as well as for research institutes, but also for founders of biotech companies and people working for venture capital corporations.
Download or read book Non coding RNA and the Reproductive System written by Dagmar Wilhelm and published by Springer. This book was released on 2015-12-11 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the role and function of regulatory RNAs that lack protein-coding potential in key reproductive tissues. This includes the role of small interfering RNAs (siRNAs), microRNAs (miRNAs), PIWI-interacting RNAs (piRNAs), small nucleolar RNAs (snoRNAs) and long non-coding RNAs (lncRNAs). Through clear, detailed and comprehensive debate, international leading experts discuss the role these novel regulators in normal development of sexual dimorphisms, including the differentiation of ovaries and testes, the genital tract including prostate, epididymis and uterus, as well as mammary glands. In addition, particular attention is paid on their role in pathophysiological processes within the reproductive tract. The power of next generation sequencing has proved to be an invaluable tool to discover new non-coding RNAs. While the identification of non-coding RNA is relatively easy, analysing their function represents still a challenge today. In this book, authors present historical and conceptual background information, highlight the ways in which non-coding RNAs function is analysed and present their vision of the future research in their key research area.
Download or read book Plant Gene Silencing written by M.A. Matzke and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date and comprehensive collection of reviews on various aspects of epigenetic gene silencing in plants. Research on this topic has undergone explosive growth during the past decade and has revealed novel features of gene regulation and plant defense responses that also apply to animals and fungi. Gene silencing is relevant for agricultural biotechnology because stable expression of transgenes is required for the successful commercialization of genetically engineered crops. The reviews have been written by distinguished authors who have made significant contributions to plant gene silencing research. This volume supersedes other books on gene silencing by focussing on plant systems, where many pioneering experiments have been performed, and by including the latest developments from top laboratories. The book is geared toward advanced students of genetics and plant sciences as well as applied and basic research scientists who work with transgenic organisms and epigenetic regulation of gene expression.
Download or read book RNAi Technology written by R. K. Gaur and published by CRC Press. This book was released on 2016-04-19 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: RNAi technology is used for large-scale screens that systematically shut down each gene in the cell, which can help identify the components necessary for a particular cellular process or an event such as cell division. Exploitation of the pathway is also a promising tool in biotechnology and medicine. Introducing new technology in the study of RNA
Download or read book Transformations of Lamarckism written by Snait Gissis and published by MIT Press. This book was released on 2011 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reappraisal of Lamarckism--its historical impact and contemporary significance.
Download or read book RNAi written by Gregory J. Hannon and published by CSHL Press. This book was released on 2003 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past three years, the use of double-stranded RNA to silence gene activity has become widely and rapidly adopted. RNA interference is highly specific and remarkably potent, and it acts on cells and tissues far removed from the site of introduction. The principles behind RNAi are just being uncovered, but this laboratory technique has been applied effectively in a wide variety of animal and plant species. Variations on RNAi are revolutionizing many approaches to experimental biology, complementing traditional genetic technologies with a quicker and less expensive way of mimicking the effects of mutations both in cell cultures and in living animals. Recent advances in the use of RNAi to engineer heritable silencing in mammals, to alter stem cells for organ reconstitution, and to alter the course of disease in model systems indicate that RNAi may have a future in disease therapy. Written by pioneers in this new field and edited by Gregory Hannon, one of its leading figures, RNAi: A Guide to Gene Silencing presents the principles of RNAi and reliable protocols for its laboratory use in Caenorhabditis elegans, Drosophila, plants, avian embryos, mammalian cells, mouse oocytes, and more. This important and unique book is an essential laboratory resource for scientists studying gene regulation and for all experimental biologists interested in the emerging practical applications of RNAi.
Download or read book Fundamentals of Tissue Engineering and Regenerative Medicine written by Ulrich Meyer and published by Springer Science & Business Media. This book was released on 2009-02-11 with total page 1049 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fundamentals of Tissue Engineering and Regenerative Medicine" provides a complete overview of the state of the art in tissue engineering and regenerative medicine. Tissue engineering has grown tremendously during the past decade. Advances in genetic medicine and stem cell technology have significantly improved the potential to influence cell and tissue performance, and have recently expanded the field towards regenerative medicine. In recent years a number of approaches have been used routinely in daily clinical practice, others have been introduced in clinical studies, and multitudes are in the preclinical testing phase. Because of these developments, there is a need to provide comprehensive and detailed information for researchers and clinicians on this rapidly expanding field. This book offers, in a single volume, the prerequisites of a comprehensive understanding of tissue engineering and regenerative medicine. The book is conceptualized according to a didactic approach (general aspects: social, economic, and ethical considerations; basic biological aspects of regenerative medicine: stem cell medicine, biomolecules, genetic engineering; classic methods of tissue engineering: cell, tissue, organ culture; biotechnological issues: scaffolds; bioreactors, laboratory work; and an extended medical discipline oriented approach: review of clinical use in the various medical specialties). The content of the book, written in 68 chapters by the world’s leading research and clinical specialists in their discipline, represents therefore the recent intellect, experience, and state of this bio-medical field.
Download or read book Sleep Wake Neurobiology and Pharmacology written by Hans-Peter Landolt and published by Springer Nature. This book was released on 2019-09-03 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume connects current ideas and concepts about sleep functions and circadian rhythms with the search for novel target-selective sleep-wake therapeutics. To do so, it provides a timely, state-of-the-art overview of sleep-wake mechanisms in health and disease, ongoing developments in drug discovery, and their prospects for the clinical treatment of sleep-disordered patients. It particularly focuses on the concept that sleep and wakefulness mutually affect each other, and the future therapeutic interventions with either sleep- or wake-promoting agents that are expected to not only improve the quality of sleep but also the waking behavior, cognition, mood and other sleep-associated physiological functions. The chapter 'Sleep Physiology, Circadian Rhythms, Waking Performance and the Development of Sleep-Wake Therapeutics' available open access under a CC BY 4.0 license at link.springer.com
Download or read book Real World Drug Discovery written by Robert M. Rydzewski and published by Elsevier. This book was released on 2010-07-07 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drug discovery increasingly requires a common understanding by researchers of the many and diverse factors that go into the making of new medicines. The scientist entering the field will immediately face important issues for which his education may not have prepared him: project teams, patent law, consultants, target product profiles, industry trends, Gantt charts, target validation, pharmacokinetics, proteomics, phenotype assays, biomarkers, and many other unfamiliar topics for which a basic understanding must somehow be obtained. Even the more experienced scientist can find it frustratingly difficult to get an overview of the many factors involved in modern drug discovery and often only after years of exploring does a whole and integrated picture emerge in the mind of the researcher.Real World Drug Discovery: A Chemist's Guide to Biotech and Pharmaceutical Research presents this kind of map of the landscape of drug discovery. In a single, readable volume it outlines processes and explains essential concepts and terms for the recent science graduate wondering what to expect in pharma or biotech, the medicinal chemist seeking a broader and more timely understanding of the industry, or the contractor or collaborator whose understanding of the commercial drug discovery process could increase the value of his contribution to it. - Interviews with well-known experts in many of the fields involved, giving insightful comments from authorities on many of the sub-disciplines important to cutting edge drug discovery. - Helpful suggestions gleaned from years of experience in biotech and pharma, which represents a repository drug discovery "lore" not previously available in any book. - "Periodic Table of Drugs" listing current top-selling drugs arranged by target and laid out so that structural similarities and differences are plain and clear. - Extensive use of diagrams to illustrate concepts like biotech startup models, preteomic profiling for target identification, Gantt charts for project planning, etc.
Download or read book Intercellular Signalling in the Mammary Gland written by C.H. Knight and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: All being done, we went to Mrs Shipmans, who is a great butter-woman; and I did see there the most of milke and cream, and the cleanest, that I ever saw in my life (29 May 1661). Among others, Sir Wm. Petty did tell me that in good earnest, he hath in his will left such parts of his estate to him that could invent such and such things -as among others, that could discover truly the way of milk coming into the breasts of a woman ... (22 March 1665). My wife tells me that she hears that my poor aunt James hath had her breast cut off here in tow- her breast having long been out of order (5 May 1665). From the Diary of Samuel Pepys, published as The Shorter Pepys (edited by R. Latham), Penguin Books (1987) The long-standing ultimate importance of research on the mammary gland is illustrated by the importance attached to cows' milk for human consumption, to human lactation and to breast cancer by Samuel Pepys and his contemporaries in the middle of the 17th century. Research has tended to develop in isolation in these three areas of continuing contemporary importance largely because in most countries, the underlying science of agricultural productivity is funded separately from the underlying science of human health and welfare.
Download or read book Plant Epigenetics written by Nikolaus Rajewsky and published by Springer. This book was released on 2017-04-27 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents, in 26 chapters, the status quo in epigenomic profiling. It discusses how functional information can be indirectly inferred and describes the new approaches that promise functional answers, collectively referred to as epigenome editing. It highlights the latest important advances in our understanding of the functions of plant epigenomics and new technologies for the study of epigenomic marks and mechanisms in plants. Topics include the deposition or removal of chromatin modifications and histone variants, the role of epigenetics in development and response to environmental signals, natural variation and ecology, as well as applications for epigenetics in crop improvement. Discussing areas ranging from the complex regulation of stress and heterosis to the precise mechanisms of DNA and histone modifications, it presents breakthroughs in our understanding of complex phenotypic phenomena.
Download or read book Transcriptional and Translational Regulation of Stem Cells written by Gary Hime and published by Springer Science & Business Media. This book was released on 2013-05-22 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the latest findings on transcriptional and translational regulation of stem cells. Both transcriptional activators and repressors have been shown to be crucial for the maintenance of the stem cell state. A key element of stem cell maintenance is repression of differentiation factors or developmental genes – achieved transcriptionally, epigenetically by the Polycomb complex, and post-transcriptionally by RNA-binding proteins and microRNAs. This volume takes two approaches to this topic – (1) illustrating the general principles outlined above through a series of different stem cell examples – embryonic, iPS and adult stem cells, and (2) describing several molecular families that have been shown to have roles in regulation of multiple stem cell populations.
Download or read book Essays Upon Heredity and Kindred Biological Problems written by August Weismann and published by . This book was released on 1891 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Virology written by R. E. F. Matthews and published by Academic Press. This book was released on 2013-10-22 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Virology, Second Edition, was written to cover the substantial developments in many areas of plant virology since the first edition was published. Advances have been made in all branches of the subject, but these have been most far reaching with respect to the structure of viruses and of their components, and in the understanding of how viral genomes are organized and how viruses replicate in cells. Significant developments have also occurred in the understanding of how viruses are transmitted by invertebrates and in the application of control measures for specific diseases. The taxonomy of viruses has advanced significantly, and there are now 25 internationally approved families and groups of plant viruses. All these developments have required that most sections be entirely rewritten. This book is intended primarily for graduate students in plant pathology, plant virology, general virology, and microbiology, and for teachers and research workers in these fields. It should also prove useful to some people in related disciplines—molecular biologists, biochemists, plant physiologists, and entomologists.
Download or read book Peroxisomal Disorders and Regulation of Genes written by Frank Roels and published by Springer. This book was released on 2003-12-31 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: In most peroxisomal disorders the nervous system is severely affected which explains the clinical and community burden they represent. This is the first book to focus not only on the mutations causing these inherited illnesses, but also on mechanisms that regulate, suppress or enhance expression of genes and their products (enzymes). Indeed since the success and completion of the Human Genome Project all genes (coding DNA sequences) are known. However, of many, their function, and the role of the gene product has not been determined. An example is X-linked adrenoleukodystrophy, the most frequent peroxisomal disorder. Children are born healthy, but in more than 1 out of 3, demyelination of the brain starts unpredictably and they die in a vegetative state. The gene mutated in most families has been known for 10 years; but the true role of the encoded protein, ALDp, is still speculative; and within the same family, very severe and asymptomatic clinical histories co-exist, unexplained by the mutation.
