Cell Synchrony: Studies in Biosynthetic Regulation focuses on the processes, principles, applications, methodologies, and approaches involved in biosynthetic regulation, including chromosome replication, cellular biosynthesis, and enzyme synthesis. The selection first takes a look at the theory of synchronous cultures, synchronous replication of the chromosome in Bacillus subtilis, and chromosome replication in Escherichia coli. Discussions focus on attempts to characterize the physical state of replicating DNA, cell division and the regulation of chromosome replication, regulation of sequential chromosome synthesis, synchrony of chromosome replication, and determination of the cell doubling-time distribution function from the decay of synchronization. The text then examines nuclear events in synchronously dividing yeast cultures, periodic enzyme synthesis in synchronous cultures of yeast, and light-induced synchronous sporulation of a myxomycete. Topics include periodicity of enzyme synthesis, use of synchronous cultures for studying cellular biosynthesis, and cytological observations on synchronously dividing cultures. The book explores the effects of temperature on the mitotic cycle of normal and synchronized mammalian cells; behavior of sulfhydryl groups in synchronous division; and morphogenetic and macromolecular aspects of synchronized Tetrahymena. The selection is highly recommended for researchers interested in biosynthetic regulation.

Jasper's Basic Mechanisms, Fourth Edition, is the newest most ambitious and now clinically relevant publishing project to build on the four-decade legacy of the Jasper's series. In keeping with the original goal of searching for "a better understanding of the epilepsies and rational methods of prevention and treatment.", the book represents an encyclopedic compendium neurobiological mechanisms of seizures, epileptogenesis, epilepsy genetics and comordid conditions. Of practical importance to the clinician, and new to this edition are disease mechanisms of genetic epilepsies and therapeutic approaches, ranging from novel antiepileptic drug targets to cell and gene therapies.

Since the publication of the first edition in 1983, several new and exciting developments have taken place in the field of plant tissue culture, which forms a major component of what is now called plant biotechnology. The revised edition presents updated information on theoretical, practical and applied aspects of plant tissue culture. Each chapter has been thoroughly revised and, as before, is written in lucid language, includes relevant media protocols, and is profusely illustrated with self-explanatory diagrams and original photographs. This book includes three new chapters: "Variant selection", "Genetic Engineering" and "Production of Industrial Compounds" and contains a complete bibliography and a glossary of terms commonly used in tissue culture literature.This updated version proves to be an excellent text for undergraduate, postgraduate students and teachers in various fields of plant sciences and a useful reference book for those interested in the application of any aspect of this aseptic technology.

First Published in 2018. Routledge is an imprint of Taylor & Francis, an Informa company.

This volume presents the Proceedings of the University of Chicago's third Cancer Training Grant supported Teaching Symposium. This Symposium received much of its support from grant number T12 CA 08077-02. Most of the planning of the Symposium and most of the local editing of the Proceedings was carried out by Dr. R. J. Michael Fry of the A.E.C. Argonne National Laboratory and by two members of the Advisory Committee of the Cancer Training Grant, Drs. Melvin Griem and Werner Kirsten. They carried the main responsibility for the Symposium. The subject of the Symposium, "Normal and Malignant Cell Growth," was chosen because, as the Proceedings reflect, it is a rapidly advancing field of endeavor which is of utmost importance to the understanding of the processes of malignant neoplasia. In fact, there is increasing evidence that knowledge of the kinetics of the cancer cell will greatly influence approaches to cancer therapy. Like the first two of these Teaching Symposia held in 1964 and 1966, this one attracted about 400 students and staff from this medical institution as well as from other medical centers in the Chicago area. The effective interplay of an excellent group of scientists with a lively and responsive audience was evident as they considered together a topic of great current interest in the field of neoplasia. Much of the credit for the smooth organization and implementation of the Symposium must go to Mrs.

The field of cell cycle regulation is based on the observation that the life cycle of a cell progresses through several distinct phases, G1, M, S, and G2, occurring in a well-defined temporal order. Details of the mechanisms involved are rapidly emerging and appear extraordinarily complex. Furthermore, not only is the order of the phases important, but in normal eukaryotic cells one phase will not begin unless the prior phase is completed successfully. Che- point control mechanisms are essentially surveillance systems that monitor the events in each phase, and assure that the cell does not progress prematurely to the next phase. If conditions are such that the cell is not ready to progress—for example, because of incomplete DNA replication in S or DNA damage that may interfere with chromosome segregation in M—a transient delay in cell cycle progression will occur. Once the inducing event is properly handled— for example, DNA replication is no longer blocked or damaged DNA is repaired—cell cycle progression continues. Checkpoint controls have recently been the focus of intense study by investigators interested in mechanisms that regulate the cell cycle. Furthermore, the relationship between checkpoint c- trol and carcinogenesis has additionally enhanced interest in these cell cycle regulatory pathways. It is clear that cancer cells often lack these checkpoints and exhibit genomic instability as a result. Moreover, several tumor suppressor genes participate in checkpoint control, and alterations in these genes are as- ciated with genomic instability as well as the development of cancer.

Advances in Cell Biology has been initiated as a continuing, multi-volume series to report on the progress of a wide spectrum of problems of cell structure and cell function. Jn arranging these volumes individual contributors are asked not only to review the major new information, but especially to present the state of a given problem or area by discussing the current central issues, speculations, concepts, hypotheses, and technical problems. We intend, in addition, that these volumes will not be concerned with comprehensive reviews of the recent literature but will consist rather of presentations of an interpretive and integrative nature, based on selection of major research advances. It is our aim that these volumes should provide the means whereby cell biologists may keep themselves reasonably well informed about the current progress in research areas in cell biology in which they are not immediately or directly involved themselves. The articles, nevertheless, are expected to bring into focus the experimental objectives of the specialists in a given research area. D. M.P. L. G. E.M. vii Contents Contributors v Preface vii 1 1. The Regulation of DNA Synthesis in Eukaryotes James Douglas Watson 2. D·RNA Containing Ribonucleoprotein Particles and Messenger RNA Transport 47 G. P. Georgiev and 0. P. Samarina Recent Developments in the Synchronization of 3. Tetrahymena Cell Cycle 111 Eric Zeuthen 153 4. Repetitious DNA Christopher Bostock 5. Mitosis 225 R. Bruce Nicklas Specific Enzyme Production in Eukaryotic Cells 299 6.

The first compilation of a wealth of knowledge on tobacco BY-2 cells, often cited as the HeLa cell line of higher plants. Basic issues of cell cycle progression, cytokinesis, cell organization and factors that are involved in these processes are covered in detail. Since the tobacco cell line is used as a tool for research in molecular and cellular biology, several chapters on such studies are also included. Further, changes of primary and secondary metabolites during culture and factors that affect these processes are treated. Last but not least, the so far unpublished historical background of the BY-2 cell line is described. This volume is a must for any scientist working in the field of plant biology.

The Plant Cell Cycle and Its Interfaces is a timely review of what is known and what we need to know about important plant cell cycle interfaces. Only through proper understanding can we underpin the manipulation of crop plants and, in turn, provide the vital resources for an ever-increasing human population. Written by contributors from leading laboratories around the world, the book addresses fundamental questions about plant growth and development such as how plant growth regulators regulate the cell cycle, how nutrients drive the cell cycle, and how homeotic genes interface with the cell cycle at these key transition points.

Quantification of the proliferative characteristics of normal and malignant cells has been of interest to oncolo gists and cancer biologists for almost three decades. This interest stems from (a) the fact that cancer is a disease of uncontrolled proliferation, (b) the finding that many of the commonly used anticancer agents are preferentially toxic to cells that are actively proliferating, and (c) the observa tion that significant differences in proliferation characteristics exist between normal and malignant cells. Initially, cell cycle analysis was pursued enthusiastically in the hope of gener ating information useful for the development of rational cancer therapy strategies; for example, by allowing identi fication of rapidly proliferating tumors against which cell cycle-specific agents could be used with maximum effec tiveness and by allowing rational scheduling of cell cyc- specific therapeutic agents to maximize the therapeutic ratio. Unfortunately, several difficulties have prevented realiza tion of the early promise of cell cycle analysis: Proliferative patterns of the normal and malignant tissues have been found to be substantially more complex than originally an ticipated, and synchronization of human tumors has proved remarkably difficult. Human tumors of the same type have proved highly variable, and the cytokinetic tools available for cell cycle analysis have been labor intensive, as well as somewhat subjective and in many cases inapplicable to humans. However, the potential for substantially improved cancer therapy remains if more accurate cytokinetic infor mation about human malignancies and normal tissues can be obtained in a timely fashion.