الصفحة 1
الصفحة 1
Hormonal control of cell cycle
This volume reflects the proceedings of an International Workshop held in Paris in December 2006. The aim of the meeting was to undertake a high level of scholarly exchange between experts in cell biology, oncology and endocrinology interested in cell cycle control. The topics covered ranged from fundamental studies of DNA replication,chromosomal and nuclear function through growth factor control of endocrine tumor initiation and progression.
Growth, Differentiation and Sexuality
Since publication of the first edition of Volume I in 1994, the field of fungal biology has developed tremendously, mainly through the advancement of various molecular techniques and international fungal genome projects. To accommodate these developments, the second edition has been completely updated. Six chapters have been revised by former authors, others by newly recruited experts, and also novel subjects, emerged in more recent years, have been added to the book. Leading scientists in the field have compiled comprehensive overviews as well as latest results obtained from cytological, genetic and molecular studies. Topics include: cellular and colony growth of fungi, cellular fusion and incompatibility, senescence and programmed cell death, environmental and physiological signalling in differentiation processes, asexual and sexual reproduction, mitosis and meiosis of various types of fungi. Both parallels and differences become visible between individual fungi as well as between fungal classes.
Asymmetric Cell Division
Cell biologists have recently become aware that the asymmetry of cell division is an important regulatory phenomenon in the fate of a cell. During development, cell diversity originates through asymmetry; in the adult organism asymmetric divisions regulate the stem cell reservoir and are a source of the drift that contributes to the aging of organisms with renewable cell compartments. Because of the concept of semi-conservative DNA synthesis, it was thought that the distribution of DNA between daughter cells was symmetric. The analysis of the phenomenon in cells during mitosis, however, revealed the asymmetry in the distribution of the genetic material that creates the drift contributing to aging of mammals. On the other hand, cancer cells can originate from a deregulation of asymmetry during mitosis in particular during stem cell expansion. The book describes the phenomenon in different organisms from plants to animals and addresses its implications for the development of the organism, cell differentiation, human aging and the biology of cancers.
