Transposable elements are short lengths of DNA with the capacity to move between different points within a genome. This process can affect the function of genes at or near the insertion site. The present book gives an overview of the impact of transposable elements on plant genomes and explains how to recognize and study transposable elements, e.g. by using state-of-the-art strategies like "new generation sequencing." Moreover, the impact of transposable elements on plant genome structure and function is reviewed in detail, and also illustrated in examples and case studies. The book is intended both for readers familiar with the field and for newcomers. With large-scale sequencing becoming increasingly available, more and more people will come across transposable element sequences in their data, and this volume will hopefully help to convince them that they are not just "junk DNA."

The latest edition in this continuing series includes the newest advances in the rapidly evolving field of animal cell culture, genetic manipulations for heterologous gene expression, cell line enhancements, improved bioreactor designs and separations, gene therapy manufacturing, tissue engineering, anti-apoptosis strategies and cell cycle research. The contents include new research articles as well as critical reviews on emerging topics such as viral and viral-like agent contamination of animal cell culture components. These papers were carefully selected from contributions by leading academic and industrial experts in the biotechnology community at the recent Cell Culture Engineering VI Meeting in San Diego, USA, 1998. However, the book is not merely a proceedings. Audience: Biochemical engineers, cell biologists, biochemists, molecular biologists, immunologists and other disciplines related to cell culture engineering, working in the academic environment and the biotechnology or pharmaceutical industry.

he biological sciences are dominated by the idea that cells are the functionally autonomous, physically separated, discrete units of life. TThis concept was propounded in the 19th century by discoveries of the cellular structuring of both plants and animals. Moreover, the ap parent autonomy of unicellular eukaryotes, as well as the cellular basis of the mammalian brain (an organ whose anatomy for a long while defied attempts to validate the idea of the cellular nature of its neurons), seemed to provide the final conclusive evidence for the completeness of *cell theory', a theory which has persisted in an almost dogmatic form up to the present day. However, it is very obvious that there are numerous observations which indicate that it is not the cells which serve as the basic units of biological life but that this property falls to some other, subcellular assemblage. To deal with this intricate problem concerning the fundamental unit of living matter, we proposed the so-called Cell Body concept which, in fact, devel ops an exceedingly original idea proposed by Julius Sachs at the end of the 19th century. In the case of eukaryotic cells, DNA-enriched nuclei are intimately associated with a microtubular cytoskeleton. In this configuration-as a Cell Body-these two items comprise the fundamental functional and struc tural unit of eukaryotic living matter. The Cell Body seems to be inherent to all cells in all organisms.

Nanoscale structures and materials have been explored in many biological applications because of their novel and impressive physical and chemical properties. Such properties allow remarkable opportunities to study and interact with complex biological processes. This book analyses the state of the art of piezoelectric nanomaterials and introduces their applications in the biomedical field. Despite their impressive potentials, piezoelectric materials have not yet received significant attention for bio-applications. This book shows that the exploitation of piezoelectric nanoparticles in nanomedicine is possible and realistic, and their impressive physical properties can be useful for several applications, ranging from sensors and transducers for the detection of biomolecules to sensible substrates for tissue engineering or cell stimulation. The book also focuses on the preparation, characterization and bio-applications of piezoelectric nanoparticles.

Bidirectional traffic of macromolecules across the nuclear envelope is an active and essential transport process in all eukaryotic cells. Work on various model systems has led to a tremendous increase in our understanding of nuclear transport in recent years.This volume summarizes our current knowledge of protein and RNA transport into and out of the nucleus. It contains nine up-to-date reviews which cover various aspects of nucleocytoplasmic transport, including the structure and function of the nuclear pore complex, the role of soluble transport factors in protein and RNA transport, and the regulation of protein transport through the nuclear pore.

This book focuses on the modeling and mathematical analysis of stochastic dynamical systems along with their simulations. The collected chapters will review fundamental and current topics and approaches to dynamical systems in cellular biology. This text aims to develop improved mathematical and computational methods with which to study biological processes. At the scale of a single cell, stochasticity becomes important due to low copy numbers of biological molecules, such as mRNA and proteins that take part in biochemical reactions driving cellular processes. When trying to describe such biological processes, the traditional deterministic models are often inadequate, precisely because of these low copy numbers. This book presents stochastic models, which are necessary to account for small particle numbers and extrinsic noise sources. The complexity of these models depend upon whether the biochemical reactions are diffusion-limited or reaction-limited. In the former case, one needs to adopt the framework of stochastic reaction-diffusion models, while in the latter, one can describe the processes by adopting the framework of Markov jump processes and stochastic differential equations. Stochastic Processes, Multiscale Modeling, and Numerical Methods for Computational Cellular Biology will appeal to graduate students and researchers in the fields of applied mathematics, biophysics, and cellular biology.

Sequencing projects have revealed the presence of at least several hundred receptor kinases in a typical plant genome. Receptor kinases are therefore the largest family of primary signal transducers in plants, and their abundance suggests an immense signaling network that we have only just begun to uncover. Recent research findings indicate that individual receptor kinases fulfill important roles in growth and development, in the recognition of pathogens and symbionts or, in a few examples, in both growth and defense. This volume will focus on the roles of receptor kinases, their signaling pathways, and the ways in which these important signaling proteins are regulated.

David Kuter and a host of leading international researchers summarize in one volume all the knowledge of thrombopoietins (TPO) available today. The distinguished experts review the history of the search to discover TPO, describe the molecular and biological characteristics of this new molecule, and present the results of the preclinical animal experiments that will guide clinical use of this new hormone. Along the way they provide the most recent and comprehensive guide to the biology of megakaryocytes and platelets.

Progress in Cell Cycle Research is a new annual series designed to be the source for up-to-date research on this rapidly expanding field. Review articles by international experts examine various aspects of cell division regulation from fundamental perspectives to potential medical applications. Researchers as well as advanced undergraduate and graduate students in cell biology, biochemistry, and molecular biology will benefit from this series.

One of the mysteries of mammalian reproduction is the physiologic process that determines the length of gestation. The proper timing of birth ensures that the young individual is sufficiently developed to survive and adapt in the extrauterine environment, and that the mother is capable to provide nutrition and protection to the newborn. This volume summarizes new knowledge obtained by many researchers seeking to unravel the compile mechanisms that contribute to the maintenance and termination of pregnancy. The most important common goal of these efforts is to reduce the incidence of preterm birth, which is the leading cause of perinatal morbidity and mortality in numerous countries.
Separate chapters are devoted to the best-studied animal models of parturition. In sheep, the fetus is in control of the timing of its own birth, while in avian species, oviposition is evidently determined by the female laying the feritlized egg. In humans and non-human primates, the roles of the fetus and the mother are more balanced, and involve a complicated and poorly understood interplay between the mother, the fetus, and the placenta. Some major aspects of these interactions, such as trophoblast function, myometrial contractility, and the endocrine-paracrine systems, are discussed in further chapters.

There are probably few people who do not dream of the good old times, when do ing science often meant fascination, excitement, even adventure. In our time, do ing science involves often technology and, perhaps, even business. But there are still niches where curiosity and fascination have their place. The subject of this book, technological as its title may sound, is one of the fortunate examples. It will report on lasers generating the coldest places in the Universe, and on table top laser microtools which can produce a heat "inferno" as it prevails in the interior of the Sun, or simulate, for specific plant cells, microgravity of the space around our plan et Earth. There will be some real surprises for the reader. The applications range from basic studies of the driving forces of cell division (and thus life) via genetic modification of cells (for example, for plant breeding) to medical applications such as blood cell analysis and finally in vitro fertilization. What are these instruments: laser microbeams and optical tweezers? Both are lasers coupled with a fluorescence microscope. The laser microbeam uses a pulsed ultraviolet laser. Light is focused, as well as possible, in space and time, in order to obtain extremely high light intensities - high enough to generate, for a very short instant, extremely hot spots which can be used to cut, fuse or perforate biological material."

For many years, the authors have investigated the adaptive role of heat shock proteins (HSPs) in different animals, including the representatives of homothermic and poikilothermic organisms that inhabit regions with contrasting thermal conditions. This book will summarize the data accumulated in the course of these studies and describe the general molecular mechanisms underlying the adaptation of various organisms to aggressive environments. We also concentrate on different evolutionary trends characteristic for HSP systems in the course of adaptation to fluctuating environmental conditions. In addition, we describe the peculiarities in the regulatory regions of heat shock genes necessary for fine tuning of these systems providing the adaptation to adverse conditions. Special emphasis is given to the role of mobile elements in the evolution and functioning of various groups of HSP genes. The book combines the results of field studies and laboratory analysis of stress genes systems.

This is the first in a series of volumes concerning the properties of the eukaryotic nucleus. Contributions from several of the most active laboratories are brought together to present a focused overview of a selected aspect of nuclear structure and function.

The migration of stem cells has been found to be critical during early development for the organization of the embryonic body as well as during adult life with tissue homeostasis and regeneration of organ function. Due to the low frequency of these cells in vivo, problems in identifying and prospectively purifying tissue specific stem cells near homogeneity, and, most importantly, a lack of adequate technologies and protocols to study stem cell migration in vivo, this vital research has been quite difficult until recently. In "Stem Cell Migration: Methods and Protocols," experts in the field compile and highlight the standard and novel techniques that allow the studying of the migration of stem cells in one succinct manual. Including protocols on germ, neuronal, and hematopoietic stem cells, during development and adulthood with a clear emphasis on in vivo technologies, the volume also extends its coverage to in vitro approaches toward several developmentally-conserved signaling pathways. 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.

Practical and convenient, "Stem Cell Migration: Methods and Protocols" provides key, state-of the art information on experimental techniques for studying stem cell migration both at a cellular and molecular level in development, regeneration, and disease.

This detailed volume provides thorough protocols describing how to use genetics to study mouse and zebrafish erythropoiesis in whole animal models and for genetically manipulating cultured mouse and human erythroid cells. Protocols include strategies to analyze circulating red blood cell parameters, as well as progenitor cell status, stage of differentiation, and enucleation. Methods for the study of erythroid cell gene regulation using chromatin immunoprecipitation and chromatin conformation capture are detailed. Furthermore, protocols are provided to examine stress erythropoiesis, erythroblastic islands, and erythroblast structure. The collection also includes reviews on the available mouse models of erythropoiesis, as well as on future considerations for good manufacturing practice in order to translate the manufacture of erythrocytes to the clinic. 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 practical, Erythropoiesis: Methods and Protocols provides a definitive source for molecular and cellular biology protocols to study erythropoiesis and to move this vital field forward.

This volume covers data describing the role of free radicals and antioxidants that deal with clinical and pre-clinical trials, as well as basic research in the area of women's health. There is increasing evidence that oxidative stress is a causative, or at least a supporting factor in female pathology and infertility. During advancing gestational age, oxidative stress biomakers rise. Oxidative stress plays a regulatory role in transcription, signal transduction, gene expression and membrane trafficking. A search on Pub Med shows 449 papers have been published to date related to women's health disorders and use of antioxidants in a variety of disease that are prevalent in women, such as hypertension and cardiovascular disease, osteoporosis, obesity and restless leg syndrome.

This volume provides a comprehensive list of protocols for molecular biologists, biochemists and geneticists. Chapters cover protocols that further the study into protein complexes that modify chromatin either by adding or removing post-translational modifications, or by exchanging histone variants within the nucleosome. 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, Histones: Methods and Protocols aims to ensure successful results in the further study of this vital field.

Mechanics plays a central role in determining form and function in biology. This holds at the cellular, molecular and tissue scales. At the cellular scale, mechanics in?uences cell adhesion, cytoskeletal dynamics and the traction that the cell can generate on a given substrate. All of these in turn - fect the cellular functions of migration, mitosis, phagocytosis, endocytosis and stem cell differentiation among others. Indeed, if cells do not develop the appropriate stresses, they are unviable and die. These aspects of cell mechanics are frequently used by mainstream biologists, as traditional mechanicians may be surprised to learn. There is a growing view that many functions of the cell are mechanical in nature even though chemical signals play crucial roles in the processes. Free energy barriers control transitions between different conformations of vir- ally every macromolecule including DNA, RNA, the adhesion protein integrin, the motor protein myosin, and the proteins vinculin and talin that link the cytoskeleton to focal adhesions. The strain energy can be a signi?cant component of the total free energy barrier. For binding to take place, the macromolecules need to be in conf- mational states that expose chemical groups without steric hinderance. The kinetics of chemical reactions are therefore strongly in?uenced by the conformational strain energy.

This book addresses the most recent advances in the transport of proteins across a variety of biological membranes. In addressing this topic, this volume includes several new twists not previously addressed in the literature. In the last few years, the study of protein translocation has been revolutionized by the availability of structural information on many of the components and complexes involved in the process. Unlike earlier books written on protein translocation, this volume considers these advances. In addition, several chapters discuss facets of protein translocation from a systems biology perspective, considered by many to be the next paradigm for biological study. Readers of this book will come away with a deeper understanding of the problems facing researchers of protein translocation and see how the most modern biological techniques and approaches are being recruited to answer those questions. The chapters are also written such that problems awaiting future investigation are clearly presented.

In Neuronal Cell Culture: Methods and Protocols, the latest aspects of the culture of neural cells are explored by experts in the field who also explain the practical and theoretical considerations of the techniques involved. Starting with a general overview of the neuronal culturing principles that are described, this detailed volume covers cell line models for neural cells, the isolation and propagation of primary cultures, stem cells, transfection and transduction of neural cultures, and other more advanced techniques. Written for the 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. Practical and easy to use, Neuronal Cell Culture: Methods and Protocols will be of interest to scientists at all levels developing cell culture models for neuroscientific studies.

This volume describes the state-of-knowledge in the study of the relationships between mechanical loading states in tissues and common pathophysiologies related to increase in mass of adipose tissues and/or hyperglycemia which eventually lead to obesity, diabetes, insulin resistance, hyperlipidemia, metabolic inflammations, certain types of cancer and other related diseases. There appears to be an interaction between the loading states in tissues and cells and these chronic conditions, as well as with factors such as age, gender and genetics of the individual. Bioengineering has made key contributions to this research field in providing technologies for cell biomechanics experimentation, microscopy and image processing, tissue engineering and multi-scale, multi-physics computational modeling. Topics at the frontier of this field of study include: the continuous monitoring of cell growth, proliferation and differentiation in response to mechanical factors such as stiffness of the extracellular matrix (ECM) and mechanical loads transferred through the ECM; mechanically-activated signaling pathways and molecular mechanisms; effects of different loading regimes and mechanical environments on differentiation fates of mesenchymal stem cells (MSCs) into myogenic and osteogenic versus adipogenic lineages; the interactions between nutrition and mechanotransduction; cell morphology, focal adhesion patterns and cytoskeletal remodeling changes in adipogenesis; activation of receptors related to diabetes by mechanical forces; brown and white adipose plasticity and its regulation by mechanical factors.

This book highlights recent advances in the field of biomaterials design and the state of the art in biomaterials applications for biomedicine. Addressing key aspects of biomaterials, the book explores technological advances at multi-scale levels (macro, micro, and nano), which are used in applications related to cell and tissue regeneration. The book also discusses the future scope of bio-integrated systems. The contents are supplemented by illustrated examples, and schematics of molecular and cellular interactions with biomaterials/scaffolds are included to promote a better understanding of the complex biological mechanisms involved in material-to-biomolecule interactions. The book also covers factors that govern cell growth, differentiation, and regeneration in connection with the treatment and recovery of native biological systems. Tissue engineering, drug screening and delivery, and electrolyte complexes for biomedical applications are also covered in detail. This book offers a comprehensive reference guide for multi-disciplinary communities working in the area of biomaterials, and will benefit researchers and graduate students alike.

This volume assembles protocols for chromosome engineering and genome editing in two recently developed approaches for manipulating chromosomal and genomic DNA in plants. The first approach is a "plant chromosome vector" system, which allows the introduction of desired genes or DNA into target sites on the chromosome vector, particularly by sequence-specific recombination. The second approach is "genome-editing," which makes it possible to introduce mutations into any of the genes of DNA that we wish to change. In addition, this book also covers other related techniques used to accelerate progress in plant chromosome and genome engineering. 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. Cutting-edge and thorough, Chromosome and Genomic Engineering in Plants: Methods and Protocols provides a comprehensive source of protocols and other necessary information to anyone interested in this field of study.

In Neuroprotective Signal Transduction prominent researchers and clinicians focus on how inter- and intracellular signaling mechanisms prevent the degeneration and death of neurons occurring in both acute and chronic neurodegenerative disorders. Authoritative contributions dissect the signaling pathways of an array of neuroprotective factors-ranging from neurotrophins (NGF, BDNF, NT-3, and NT-4/5), to growth factors (bFGF, IGF-1, GDNF), to cytokines (TNF, IL-1b, and TGFb), to secreted amyloid precursor proteins, to protease nexin-1. Also treated are cytoprotective signaling events that occur within injured neurons independently of intercellular signals. Neuroprotective Signal Transduction presents fundamental, cutting-edge treatment of the cellular and molecular signal transduction pathways found in human neurodegenerative conditions. The book's elucidation of the molecular cascades evolved by the nervous system to protect itself is now lead to effective strategies for preventing neuronal degeneration in such conditions as stroke, traumatic brain injury, Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis, and will form the basis for powerful new drug discovery and gene therapy strategies.