Examining the State of the Science of Mammalian Embryo Model Systems


Book Description

Because of the recent advances in embryo modeling techniques, and at the request of the Office of Science Policy in the Office of the Director at the National Institutes of Health, the National Academies of Sciences, Engineering, hosted a 1-day public workshop that would explore the state of the science of mammalian embryo model systems. The workshop, which took place on January 17, 2020, featured a combination of presentations, panels, and general discussions, during which panelists and participants offered a broad range of perspectives. Participants considered whether embryo model systems - especially those that use nonhuman primate cells - can be used to predict the function of systems made with human cells. Presentations provided an overview of the current state of the science of in vitro development of human trophoblast. This publication summarizes the presentation and discussion of the workshop.




Introduction to Synthetic Embryology


Book Description

In the current era, in which science and technology are advancing by leaps and bounds, we are witness to discoveries and achievements that challenge us to rethink our understanding of life, health and human potential. Remarkable advances in the area of synthetic embryology and gene therapy have been the protagonists of a scientific revolution that takes us beyond the limits of what we previously imagined to be possible. In this book, we explore a vast territory of knowledge, delving into the fascinating domains of creation and modification of living beings, genetic manipulation and embryonic development. The aim is to offer the reader a panoramic and reflective view of the most recent advances in these areas, while raising crucial questions about ethical limits and the ethical and social challenges that accompany these discoveries. Throughout these pages, we delve into the development of gene therapies aimed at combating immune and muscle disorders, delving into the heart of personalized medicine and pointing to a future in which we can correct genetic defects even before birth. We also explore the frontiers between natural embryology and synthetic embryology, confronting traditional conceptions about the beginning of life and the revolutionary possibilities that arise from the manipulation of the fundamental mechanisms of embryonic development. With equal enthusiasm, we examine the applications of synthetic embryology in fields as diverse as creating transgenic foods, adapting organisms to hostile environments, understanding extraterrestrial life, and even colonizing other planets. In doing so, we are confronted with ethical and social dilemmas, the answers to which have the potential to shape not only science, but humanity itself. In each chapter, we seek to present a comprehensive and up-to-date view of scientific and technological advances, always accompanied by a critical and reflective analysis of the ethical implications and challenges we face. Our aim is to provide readers with a starting point for understanding these findings and for informed and constructive debate about the future of synthetic embryology and its implications for society. Therefore, I invite you, dear reader, to embark on this journey of discovery and reflection. As we enter this exciting, uncharted territory of synthetic embryology, we are confronted with profound and provocative questions about the nature of life, our own limits, and the responsibility we carry as custodians of science and innovation. This book is an invitation to explore the frontiers of science and ethics, to challenge our ingrained perceptions and conceptions and, above all, to ponder the future we wish to build. Embark on this journey with us and discover the intriguing and disturbing possibilities that synthetic embryology holds for us.




Stem Cells and the Future of Regenerative Medicine


Book Description

Recent scientific breakthroughs, celebrity patient advocates, and conflicting religious beliefs have come together to bring the state of stem cell researchâ€"specifically embryonic stem cell researchâ€"into the political crosshairs. President Bush's watershed policy statement allows federal funding for embryonic stem cell research but only on a limited number of stem cell lines. Millions of Americans could be affected by the continuing political debate among policymakers and the public. Stem Cells and the Future of Regenerative Medicine provides a deeper exploration of the biological, ethical, and funding questions prompted by the therapeutic potential of undifferentiated human cells. In terms accessible to lay readers, the book summarizes what we know about adult and embryonic stem cells and discusses how to go about the transition from mouse studies to research that has therapeutic implications for people. Perhaps most important, Stem Cells and the Future of Regenerative Medicine also provides an overview of the moral and ethical problems that arise from the use of embryonic stem cells. This timely book compares the impact of public and private research funding and discusses approaches to appropriate research oversight. Based on the insights of leading scientists, ethicists, and other authorities, the book offers authoritative recommendations regarding the use of existing stem cell lines versus new lines in research, the important role of the federal government in this field of research, and other fundamental issues.




The Human Embryo In Vitro


Book Description

The Human Embryo in vitro explores the ways in which UK law engages with embryonic processes under the Human Fertilisation and Embryology Act 1990 (as amended), the intellectual basis of which has not been reconsidered for almost thirty years. McMillan argues that in regulating 'the embryo' – that is, a processual liminal entity in itself - the law is regulating for uncertainty. This book offers a fuller understanding of how complex biological processes of development and growth can be better aligned with a legal framework that purports to pay respect to the embryo while also allowing its destruction. To do so it employs an anthropological concept, liminality, which is itself concerned with revealing the dynamics of process. The implications of this for contemporary regulation of artificial reproduction are fully explored, and recommendations are offered for international regimes on how they can better align biological reality with social policy and law.




Mouse Development


Book Description

The mouse is a perfect model organism to study mammalian, and thus indirectly also human, embryology. Most scientific achievements that have had an important impact on the understanding of basic mechanisms governing embryo development in humans, originated from mouse embryology. Stem cell research, which now offers the promise of regenerative medicine, began with the isolation and culture of mouse embryonic stem cells by Martin Evans (who received the Nobel Prize in medicine in 2007 for this achievement) and Matthew Kaufman. This book provides an overview of mouse development, spanning from oocytes before fertilization to the state-of-the-art description of embryonic and adult stem cells. The chapters, written by the leading specialists in the field, deal with the most recent discoveries in this extremely fast-developing area of research.




Stem Cells


Book Description

The second edition of Stem Cells: Scientific Facts and Fiction provides the non-stem cell expert with an understandable review of the history, current state of affairs, and facts and fiction of the promises of stem cells. Building on success of its award-winning preceding edition, the second edition features new chapters on embryonic and iPS cells and stem cells in veterinary science and medicine. It contains major revisions on cancer stem cells to include new culture models, additional interviews with leaders in progenitor cells, engineered eye tissue, and xeno organs from stem cells, as well as new information on "organs on chips" and adult progenitor cells. In the past decades our understanding of stem cell biology has increased tremendously. Many types of stem cells have been discovered in tissues that everyone presumed were unable to regenerate in adults, the heart and the brain in particular. There is vast interest in stem cells from biologists and clinicians who see the potential for regenerative medicine and future treatments for chronic diseases like Parkinson's, diabetes, and spinal cord lesions, based on the use of stem cells; and from entrepreneurs in biotechnology who expect new commercial applications ranging from drug discovery to transplantation therapies. - Explains in straightforward, non-specialist language the basic biology of stem cells and their applications in modern medicine and future therapy - Includes extensive coverage of adult and embryonic stem cells both historically and in contemporary practice - Richly illustrated to assist in understanding how research is done and the current hurdles to clinical practice




Stem Cells: A Very Short Introduction


Book Description

The topic of stem cells has a high profile in the media. We've made important advances in our scientific understanding, but despite this the clinical applications of stem cells are still in their infancy and most real stem cell therapy carried out today is some form of bone marrow transplantation. At the same time, a scandalous spread of unproven stem cell treatments by private clinics represents a serious problem, with treatments being offered which are backed by limited scientific rationale, and which are at best ineffective, and at worse harmful. This Very Short Introduction introduces stem cells, exploring what they are, and what scientists do with them. Introducing the different types of stem cells, Jonathan Slack explains how they can be used to treat diseases such as retinal degeneration, diabetes, Parkinson's disease, heart disease, and spinal trauma. He also discusses the important technique of bone marrow transplantation and some other types of current stem cell therapy, used for the treatment of blindness and of severe burns. Slack warns against fake stem cell treatments and discusses how to distinguish real from fake treatments. He also describes the latest scientific progress in the field, and looks forward to what we can expect to happen in the next few years Very Short Introductions: Brilliant, Sharp, Inspiring ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.




Human Embryonic Stem Cells


Book Description

A discussion of all the key issues in the use of human pluripotent stem cells for treating degenerative diseases or for replacing tissues lost from trauma. On the practical side, the topics range from the problems of deriving human embryonic stem cells and driving their differentiation along specific lineages, regulating their development into mature cells, and bringing stem cell therapy to clinical trials. Regulatory issues are addressed in discussions of the ethical debate surrounding the derivation of human embryonic stem cells and the current policies governing their use in the United States and abroad, including the rules and conditions regulating federal funding and questions of intellectual property.




Biological Physics of the Developing Embryo


Book Description

During development cells and tissues undergo changes in pattern and form that employ a wider range of physical mechanisms than at any other time in an organism's life. This book demonstrates how physics can be used to analyze these biological phenomena. Written to be accessible to both biologists and physicists, major stages and components of the biological development process are introduced and then analyzed from the viewpoint of physics. The presentation of physical models requires no mathematics beyond basic calculus.




Principles of Regenerative Medicine


Book Description

Virtually any disease that results from malfunctioning, damaged, or failing tissues may be potentially cured through regenerative medicine therapies, by either regenerating the damaged tissues in vivo, or by growing the tissues and organs in vitro and implanting them into the patient. Principles of Regenerative Medicine discusses the latest advances in technology and medicine for replacing tissues and organs damaged by disease and of developing therapies for previously untreatable conditions, such as diabetes, heart disease, liver disease, and renal failure. - Key for all researchers and instituions in Stem Cell Biology, Bioengineering, and Developmental Biology - The first of its kind to offer an advanced understanding of the latest technologies in regenerative medicine - New discoveries from leading researchers on restoration of diseased tissues and organs