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Human cells grown in monkey embryos raises ethics debate
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Scientists have made a part-human, part-monkey embryo
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First part-human, part-monkey embryo created by scientists sparks outcry
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BBC News
By Helen Briggs
image captionHuman cells were grown in an early monkey embryo
Monkey embryos containing human cells have been made in a laboratory, a study has confirmed.
The research, by a US-Chinese team, has sparked fresh debate into the ethics of such experiments.
The scientists injected human stem cells - cells that have the ability to develop into many different body tissues - into macaque embryos.
The developing embryos were studied for up to 20 days.
Other so-called mixed-species embryos, or chimeras, have been produced in the past, with human cells implanted into sheep and pig embryos.
The scientists were led by Prof Juan Carlos Izpisua Belmonte of the Salk Institute in the US, who, in 2017, helped make the first human-pig hybrid.
Ethical concerns raised over human cells grown in monkey embryos UK experts have called for public discussion and debate about the ethical and regulatory challenges on human-animal chimeras. 15 April, 2021 15:00
US scientists have grown human cells in monkey embryos with the aim to understand more about how cells develop and communicate with each other.
Researchers from the Salk Institute in California have produced what is known as monkey-human chimeras, with human stem cells – special cells that have the ability to develop into many different cell types – inserted in macaque embryos in petri dishes in the lab.
However, some ethicists in the UK have raised concerns, saying this type of work “poses significant ethical and legal challenges” and “opens Pandora’s box to human-nonhuman chimeras”.