Telomeres and Telomerase in Ageing, Disease, and Cancer : Molecular Mechanisms of Adult Stem Cell Ageing

The understanding of the molecular mechanisms underlying the ageing process is essential to improve quality of life and health span in the growing populations of the elderly. Telomere shortening represents one of the basic aspects of ageing and telomere dysfunction could contribute to the accumulation of DNA damage during ageing. This book summarizes experimental evidence and clinical data indicating that telomere dysfunction influences human ageing, diseases and cancer. In addition, the book describes our current knowledge on checkpoints that limit cellular lifespan (senescence) and survival (apoptosis, crisis) in response to telomere dysfunction. A special focus of the book is on adult stem cells. There is emerging evidence that adult stem cell ageing impairs organismal fitness and survival and contributes to cancer formation (cancer stem cells). The book summarizes basic mechanisms of adult stem cell ageing. Moreover, the authors describe evidence that telomere dysfunction impairs stem cell function by inducing cell intrinsic checkpoints as well as environmental alterations. All of these subjects are of great interest for ageing researchers, physicians and students and should provide a rational basis for beginning to identify molecular targets for novel therapies that aim to improve quality of life during ageing.

This book provides an in depth review of our current knowledge on the role of telomeres and telomerase in ageing, disease and cancer. Telomere shortening results in telomere dysfunction, which represents one of the basic aspects of ageing contributing to the accumulation of DNA damage during ageing. The book describes cell intrinsic checkpoints (senescence and apoptosis) and environmental alterations that limit stem cell function during ageing and disease. The book focuses on experimental data in mouse models and cell lines and, in addition, provides and overview on telomere shortening in human diseases and ageing. The book also describes future directions in research on adult stem cell ageing, telomeres, and cancer. In addition, the book points to potential targets for molecular therapies aiming to improve regeneration and stem cell function during ageing or to impair cancer cell proliferation.

A special focus of the book is on adult stem cells. There is emerging evidence that adult stem cell ageing impairs organismal fitness and survival and contributes to cancer formation (cancer stem cells). The book summarizes basic mechanisms of adult stem cell ageing. Moreover, the authors describe consequences of telomere dysfunction on stem cell function involving cell intrinsic checkpoints as well as environmental alteration of the stem cell niche.

The above subjects appear to be of utmost importance to ageing researchers and physicians. Due to the advances in medicine, food supply and housing a growing percentage of humans reaches a long lifespan (>70 years). At this age molecular mechanisms of ageing limit organ maintenance, fitness and survival. A detailed understanding of the molecular mechanisms underlying the ageing process is essential to further improve quality of life and ‘health span’ in the ageing human populations.

In summary, this book provides an excellent basis for academic teachers, scientists, and students interested in the areas of stem cell ageing, telomeres & telomerase, regeneration, and cancer. In addition, the book is of interest for physicians since the development of molecular therapies targeting ageing stem cells represents a promising approach to improve regenerative reserve and organ function during ageing and could also serve to target cancer stem cells.

Telomere shortening represents one of the basic aspects of ageing and telomere dysfunction could contribute to the accumulation of DNA damage during ageing. This book summarizes evidence and data indicating that telomere dysfunction influences human ageing, diseases and cancer. The book describes our current knowledge on checkpoints that limit cellular lifespan and survival in response to telomere dysfunction. There is special focus on adult stem cells. Summarizes experimental evidence and clinical data indicating that telomere dysfunction influences human ageing, diseases and cancer. This book describes our knowledge on checkpoints that limit cellular lifespan (senescence) and survival (apoptosis, crisis) in response to telomere dysfunction