Ethics, iBlastoids, and Brain Organoids: Time to Revise Antiquated Laws and Processes
Written by Julian Savulescu
Oxford Uehiro Centre for Practical Ethics and Wellcome Centre for Ethics, University of Oxford
Biomedical Ethics Research Group, Murdoch Children’s Research Institute
Jose Polo and his team at Monash University have successfully reprogrammed human adult cells (fibroblasts – skin cells) to form “iBlastoids”. These are structures which are like early human embryos. Normally when a sperm enters an egg, it produces a new cell, which divides, and these cells divide until a blastocyst is formed in the first week, consisting of 200-300 cells. In normal embryonic development, this would implant in the uterus. However, iBlastoids can’t do this as they lack the normal membrane that surrounds the blastocyst. They cannot by themselves form a fetus or baby.
They will be useful to study early human development and why so many embryos die soon after formation. They can be used to study mutations or the effect of toxins, perhaps developing treatments for infertility. So far, they have only been allowed to develop to the equivalent of a Day 11 Blastocyst. It is not clear whether they can produce the precursors to brain development:
“the developmental potential of iBlastoids as a model for primitive streak formation and gastrulation remains to be determined, and will require an international conversation on the applicability of the 14-day rule to iBlastoids.” (Excerpt from the team’s Nature article)
Cross Post: Fresh Urgency in Mapping Out Ethics of Brain Organoid Research
Written by Julian Koplin, University of Melbourne and
Julian Savulescu, University of Oxford
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Researchers have grown groups of brain cells in the lab –
known as ‘organoids’ – that produce brain waves resembling
those found in premature infants.
from www.shutterstock.com
Scientists have become increasingly adept at creating brain organoids – which are essentially miniature human brains grown in the laboratory from stem cells.
Although brain organoid research might seem outlandish, it serves an important moral purpose. Among other benefits, it promises to help us understand early brain development and neurodevelopmental disorders such as microcephaly, autism and schizophrenia.
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