Bioethics Blogs

The Ethics of In Vitro Gametogenesis

Françoise Baylis comments on the ethics of using gametes derived from human induced pluripotent stem cells for future human reproduction.


A recent New York Times article, provocatively titled “Babies from Skin Cells? Prospect is Unsettling to Some Experts,” has once again drawn attention to controversial research by scientists at Kyushu University in Japan who succeeded in making fertile mouse pups using eggs created through in vitro gametogenesis (IVG). This is a reproductive technology that involves creating functional gametes (sperm and eggs) from induced pluripotent stem cells. Induced pluripotent stem cells are cells derived from adult body cells (such as skin cells) that have the ability to become other body cells including reproductive cells (sperm and eggs).

Supporters of this reproductive technology eagerly anticipate similar research in humans. Indeed, enthusiasts are quick to trumpet the potential benefits of in vitro gametogenesis. These benefits fall into three general categories.

First, we are told that research to derive human gametes from induced pluripotent stem cells is important for basic science. It will advance our understanding of gamete formation, human development, and genetic disease. In turn, this increased understanding will create new options for regenerative medicine.

Second, we are told that this research will allow clinicians to improve fertility services. For example, with in vitro fertilization (IVF), women typically have to undergo hormonal stimulation and egg retrieval. This can be onerous in terms of the time required for interviews, counseling, and medical procedures. It can also be harmful. Potential psychological harms include significant stress and its sequelae.

The views, opinions and positions expressed by these authors and blogs are theirs and do not necessarily represent that of the Bioethics Research Library and Kennedy Institute of Ethics or Georgetown University.