Chimeras Hybrids And Interspecies Research

In his 2006 State of the Union speech, President George W. Bush asked the U.S. Congress to prohibit the "most egregious abuses of medical research," such as the "creation of animal–human hybrids." The president's message echoed that of a 2004 report by the President's Council on Bioethics, which recommended that hybrid human–animal embryos be banned by Congress. Discussions of early interspecies research, in which cells or DNA are interchanged between humans and nonhumans at early stages of development, can often devolve into sweeping statements, colorful imagery, and confusing policy. Although today's policy advisory groups are becoming more informed, debate is still limited by the interchangeable use of terms such as chimeras and hybrids, a tendency to treat all forms of interspecies alike, the failure to distinguish between laboratory research and procreation, and not enough serious policy justification. Andrea Bonnicksen seeks to understand reasons behind support of and disdain for interspecies research in such areas as chimerism, hybridization, interspecies nuclear transfer, cross-species embryo transfer, and transgenics. She highlights two claims critics make against early interspecies studies: that the research will violate human dignity and that it can lead to procreation. Are these claims sufficient to justify restrictive policy? Bonnicksen carefully illustrates the challenges of making policy for sensitive and often sensationalized research—research that touches deep-seated values and that probes the boundary between human and nonhuman animals.

National, European and international concepts and strategies concerning the legal and ethical framework of chimera and hybrid research are still largely missing, even though they are absolutely necessary in order to use the potential of chimera and hybrid research effectively and efficiently for the benefit of science and society. The outcome of the CHIMBRIDS-Project successfully sheds light on the chances and risks of this research and provides legal solutions to existing problems in order to help decision-makers fulfil their tasks in an informed and efficient manner. This comprehensive volume details the complete results, contributed by 40 scholars from 10 member states of the European Union, Canada, China, Israel, Japan, Switzerland and the US, with descriptive reports of the legal situation in specific countries and in-depth analysis of all scientific, medical, ethical and legal implications of chimera and hybrid research.

A comprehensive survey of the current context and ethical implications of human-nonhuman genetic combinations. The idea of human-nonhuman combinations has been a recurrent theme throughout the history of humanity. From the myths of the Minotaur and the centaurs in ancient Greece to the dogheads of the Middle Ages right through to the monsters of modern science fiction, these beings have always been a source of fascination. In recent years, however, biomedical advances have demonstrated the potential to make these entities a reality through the creation of inter-species combinations. As a result, pressing and perplexing ethical questions arise. Introducing the reader to the historical context of human-nonhuman experimentation and potential future developments, this volume offers clarification, analysis and a thorough overview of the ethical challenges relating to human-nonhuman chimeras, true hybrids, cybrids and other combinations. This book is the first accessible survey of the different ethical dilemmas facing contemporary society in the creation of human-nonhuman embryonic, foetal and postnatal entities. These include important cultural, legal, philosophical and religious perspectives. As such it will act as a springboard for future debate.

Since 1998, the volume of research being conducted using human embryonic stem (hES) cells has expanded primarily using private funds because of restrictions on the use of federal funds for such research. Given limited federal involvement, privately funded hES cell research has thus far been carried out under a patchwork of existing regulations, many of which were not designed with this research specifically in mind. In addition, hES cell research touches on many ethical, legal, scientific, and policy issues that are of concern to the public. This report provides guidelines for the conduct of hES cell research to address both ethical and scientific concerns. The guidelines are intended to enhance the integrity of privately funded hES cell research by encouraging responsible practices in the conduct of that research.

The idea of human-nonhuman combinations has been a recurrent theme throughout the history of humanity. From the myths of the Minotaur and the centaurs in ancient Greece to the dogheads of the Middle Ages right through to the monsters of modern science fiction, these beings have always been a source of fascination. In recent years, however, biomedical advances have demonstrated the potential to make these entities a reality through the creation of inter-species combinations. As a result, pressing and perplexing ethical questions arise. Introducing the reader to the historical context of human-nonhuman experimentation and potential future developments, this volume offers clarification, analysis and a thorough overview of the ethical challenges relating to human-nonhuman chimeras, true hybrids, cybrids and other combinations. This book is the first accessible survey of the different ethical dilemmas facing contemporary society in the creation of human-nonhuman embryonic, foetal and postnatal entities. These include important cultural, legal, philosophical and religious perspectives. As such it will act as a springboard for future debate.

This volume addresses challenging new questions surrounding stem cell-based chimera research. This book is organized into three parts: Part One provides readers with a summary of different human donor cell types. The chapters in this section discuss ways to evaluate new types of pluripotent stem cells; the derivation of naïve and primed pluripotent stem cells from mouse preimplantation embryos; and the ethical and regulatory complexities of informed consent for the procurement of somatic cells. Part Two discusses methods for generating chimeras. The chapters here look at chick models and human-chick organizer grafts; generating human-pig interspecies chimeras; and techniques for transplanting mouse neural stem cells into a mouse disease model for stroke. Part Three concludes the book with a look at ongoing ethical controversies and new scientific directions. Chapters in this part cover the ethics of crossing the xenobarrier; animal welfare; experimentation with spermatogonial stem cells; and cautious approaches to human-monkey chimera studies to further understand complex human brain disorders. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and thorough, Chimera Research: Methods and Protocols is a valuable resource for scientists interesting in using chimeras as a research tool while also taking into consideration their complex ethical scopes.

The central question of this book is whether or not particular cell entities of human origin ought to be considered human beings. The answer is crucial for making moral decisions for or against research and experimentation. Experts in the field discuss the production of embryonic-like pluripotent stem cells by altered nuclear transfer, parthenogenesis and reprogramming of adult somatic cells. They thoroughly analyse the biological and moral status of different cell entities, such as human stem cells, embryos and human-animal hybrid embryos, and make a decisive step towards establishing final criteria for what constitutes a human being. The topic is challenging in nature and of broad interest to all those concerned with current bioethical thought on embryonic human life and its implications for society.