Aspects Of Cell Regulation

Aspects of Cell Regulation deals with the various aspects of cellular control mechanisms. The book begins with a discussion of the role of hormones in the control of cell differentiation and biochemical control over the life of an organism. This is followed by separate chapters on an intracellular control problem, namely, the proper reproduction of cellular organelles and their apportionment between daughter cells at cell mitosis; cell mutants with different temporal order for macromolecular synthesis; and the control of a plant enzyme that converts triglycerides into carbohydrate during the early stages of postgerminative growth within seed cotyledon. Subsequent chapters deal with the possible role of mitochondria in changing the control mechanism of cells to that associated with carcinogenesis; the possibility of transforming genes being detectable in the genome after the transformation to neoplastic cell; the correlation between viruses and tumor cells; and whether viruses can originate from cells rather than coming before cells.

Developmental Regulation: Aspects of Cell Differentiation draws together some studies which are directed toward the orderly changes in cell phenotypes that are understood to be developmental in nature. Organized into nine chapters, the book begins with a concise overview of the studies on molecular synthesis during early development. It then addresses the developmental regulation in cotton seed embryogenesis and germination; relation of hormonal regulation to the possible control of RNA and protein biosynthesis; transitions in differentiation by the cellular slime molds; and interrelationships of genes, enzymes, structures, and phenotypes in morphogenesis. It also explains the colony differentiation in green algae; cytology of developing vertebrate skeletal muscle; some comparative aspects of cardiac and skeletal myogenesis; and differentiation of cartilage in the limb.

This book is a state-of-the-art summary of the latest achievements in cell cycle control research with an outlook on the effect of these findings on cancer research. The chapters are written by internationally leading experts in the field. They provide an updated view on how the cell cycle is regulated in vivo, and about the involvement of cell cycle regulators in cancer.

Cell Cycle Regulation describes the interaction of the nuclear genome, the cytoplasmic pools, the organelles, the cell surface, and the extracellular environment that govern the cell cycle regulation. Comprised of 12 chapters, this book includes cell cycle regulation around nuclear chromatin modulation and some aspects of chromatin modification and its effects on gene expression. The opening chapters describe the macromolecular structure of chromatin subunits and the types and kinds of postsynthetic modifications occurring on histones, such as acetylation, methylation, and phosphorylation. The subsequent chapter deals extensively on histone phosphorylation, especially histone H1, H1M, H2A, and H3, during the cell cycle. Another chapter describes a selective histone leakage from nuclei during isolation accounting for the role of histone acetylation and phosphorylation in gene expression. This book goes on examining the assembly of microtubules and structural analysis on the regulatory role of calcium into a pattern for mitosis regulation. Other chapters discuss the methods used to measure intracellular pH changes as a function of the cell cycle of Physarum and the quantitative and qualitative changes taking place during the various phases of the cell cycle. The use of mammalian cell fusion to study cell cycle regulation and the protein synthesis regulation during the cell cycle in Chlamydomonas reinhardi are then discussed. The final chapters focus on the regulation of expression of an inducible structural gene during the cell cycle of the green alga Chlorella. The chapters provide evidence for a model of positive and negative oscillatory control of inducible gene expression. An analysis of the expression of cytoplasmic genes as a function of the cell cycle using pedigrees of a large number of individual yeast cells is also included. This book will appeal to a wide variety of life scientists and to molecular, cellular, and developmental biologists.

Developmental Aspects of the Cell Cycle discusses the molecular, organelle, cellular, and organismal levels of cell cycle, cell proliferation, and cell differentiation. It addresses the possible antagonism between the ability of cells to proliferate and to differentiate. After brief historical, theoretical, and methodological background information for each cell system, this book concentrates on the mechanisms involved in the regulation of cell proliferation and differentiation. The book presents systems in which mass cultures of cells can be induced to undergo a synchronous transition from one cell state to another, enabling the amplification of cellular and biochemical events to be analyzed with the available morphological and biochemical techniques. Some chapters explain the possibility of cell state production by a microenvironment that occurs at the organismal level, in which a series of mitotic and growth steps causes cells proliferation. The concluding chapters discuss cell proliferation and differentiation in specific cell system, such as embryonic chick and male germ cell. This book will appeal to investigators in many disciplines, teachers, and life sciences students, particularly, to molecular, cellular, and developmental biologists.

This book illustrates the mechanisms and models linking the realms of molecular interactions and biological processes or functions. It addresses the need of mathematical modelers to learn how to formulate models of cellular processes and to understand how quantitative modeling can help sort through the complexities of molecular regulatory networks.

Provides excellent overviews highlighting the research results of leading scientists as well as young investigators in the field of cellular and molecular regulatory mechanisms. How each cell grows and develops at the appropriate time and place is thoroughly covered along with such issues as culturing the types of cells which represent excellent model systems for studies on tumor formation, proliferation and differentiation; cell cycle control; molecular control of DNA replication and repair and much more.