PARIS: Scientists have used stem cells to create structures that resemble human embryos in the lab, in a first that has prompted calls for stricter regulation in the rapidly advancing field.
Several different labs around the world have released pre-print studies in the past seven days describing their research, which experts said should be treated with caution as the research has not yet been peer-reviewed.
The first announcement was last Wednesday , when Magdalena Zernicka-Goetz of Cambridge University and the California Institute of Technology described her team's work at the International Society for Stem Cell Research's annual meeting in Boston.
Within a few weeks of each other in August last year, both the Zernicka-Goetz and Hanna teams published papers about their work creating the first embryo-like structures using stem cells from mice. "The similarity to the natural embryo is remarkable, almost uncanny," said Jesse Veenvliet, a researcher at Germany's Max Planck Institute of Molecular Cell Biology and Genetics.
Regulations for research in this area differ between countries but most apply to embryos that have been fertilised - a loophole the new embryo-like models slip through.
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