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The first volume of Stem Cells deals with the fundamental principles that govern embryonic and somatic stem cell biology. Historically, the identification and characterization of such pathways and general rules of stemness occurred during embryonic development and Volume I reflects this with topics spanning cell cycle regulation, epigenetics, and asymmetric cell division in a number of organ systems from planarian to human. Three specific sections discuss i) Basic Stem Cell Biology, ii) Tissue Formation During Development, and iii) Model Organisms with particular emphasis on those more relevant for biomedical research and, thus, leading to the topics addressed in Volume II.
The second volume in the Stem Cells series concentrates on the mechanisms of stem cell regeneration in the adult organism with a view towards understanding how lost tissue can be replaced during adulthood and aging. The second focus of this volume is on stem cell identification and manipulation, including applications in basic research, medicine, and industry. The book closes with an outlook on generalized approaches that can be used to solve legislative and ethical challenges.
Workshops on the mechanisms of B cell neoplasia have been organized alternatively in Bethesda and Basel since 1983. Prog ress in our understanding of the development and responses of B lymphocytes is presented and discussed with the aim and hope to understand what might go wrong when B lymphocytes are transformed into malignant cells. Such knowledge might lead to better diagnosis, prevention and even cure of these terri ble diseases. The presentations at the Bethesda workshops are published as papers in volumes of Current Topics in Microbiol ogy and Immunology, while the presentations and discussions in Basel were transcribed and published in Editions Roche. For the first time, a Basel works...
It has been clear for a long time that after transplantation of a lymphoid organ, hematopoietic stem cells can regenerate the compartments of the organ, provided that the rest of its architecture - the strome, the epithelia and the vessels - is intact. Ahead lies the even greater challenge to assemble also these other architectural elements of a lymphoid organ by transplanting stem cells. The workshop on lymphoid organogenesis was convened to review current knowledge of and experimental skills involved in this grand project to build a lymphoid organ from its individual cellular components.
Topic Editor Prof. Aimin Xu receives financial support from Servier Laboratories. The other Topic Editors declare no competing interests with regards to the Research Topic theme.
Studies on stem cells have been attracting intense scientific and p- lic attention, not only because of controversies surrounding the use of embryonic stem cells but also because of very provocative data that have been emerging on adult stem cells. Much of the public attention and debate has been focused on the possibility that adult stem cells may be used as a substitute for human embryonic stem cells or as a justification for stopping work on them. This has somewhat dim- ished attention on very heated scientific debates that take us to the very heart of how the concept of stem cells is perceived. To this author, the latter debates have not been unlike certain philosophical debates of the l...
This volume is divided into three sections. Section I deals with factors that regulate the development and maturation of T cells and B cells and lymphocyte traffic. The significance of C-kit, Bcl-6, IL-7, and Vav in the development of T and B lymphocytes is discussed. A role of lymphotoxins and VAP-I in trafficking of leucocytes is reviewed. Finally, the trafficking and homing characteristics of T cell and B cell subsets, and the regulation of these processes during the immune response, is presented. Section II discusses various aspects of naive and memory T cell biology, including clonal expansion, reprogramming of genes including those encoding cytokines and cytotoxic granules, changes in the expression of cell surface proteins involved in cell-cell adhesion, homing of naive and memory T cells, the role of MHC and cytokines in the maintenance of naive and memory T cells, and the characterization and differentiation of virus-specific memory T cell heterogeneity in mice and humans. Novel methods of visualization of immune cells and immune systems are reviewed in Section III.
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