The bioethical principle of autonomy is problematic regarding the future of the embryo who lacks the ability to self-advocate but will develop this defining human capacity in time. Recent experiments explore the use of clustered regularly interspaced short palindromic repeats /Cas9 for germline engineering in the embryo, which alters future generations. The embryo’s inability to express an autonomous decision is an obvious bioethical challenge of germline engineering. The philosopher Joel Feinberg acknowledged that autonomy is developing in children. He advocated that (...) to reserve this future autonomy, parents should be guided to make ethical decisions that provide children with open futures. Here, Feinberg’s 1980 open future theory is extended to the human embryo in the context of CRISPR germline engineering. Although the embryo does not possess the autonomous decision-making capacity at the time of germline engineering, the parental decision to permanently change the unique genetic fabric of the embryo and subsequent generations disregards future autonomy. Therefore, germline engineering in many instances is objectionable considering Feinberg’s open future theory. (shrink)

The potential use of stem cells in the treatment of a variety of human diseases has been a major driving force for embryonic stem cell research. Another productive area of research has been the use of human stem cells to reconstitute human organ systems in animals in an attempt to create new animal models for human diseases. However, the possibility of transplanting human embryonic brain cells or precursor brain cells into an animal fetus presents numerous ethical challenges. This paper examines, (...) from a Jewish perspective on human dignity, several bioethical concerns related to the reconstitution of animal brains with human neurons. (shrink)