The wild race to improve synthetic embryos —Antonio Regalado Last week, The Guardian blasted out news of a sensational "breakthrough" at the meeting of the International Society for Stem Cell Research in Boston. The claim was that a researcher named Magdalena Zernicka-Goetz, based at the University of Cambridge and Caltech, had created "synthetic human embryos" using stem cells as the starting point. What irked me about this story was that this idea isn't so new. The amazing fact that stem cells will self-organize into structures sharing features with real embryos has been known and studied for several years, as we first reported in 2017. Since then, several labs have been in a competitive race to make these "embryo models" more complete, more realistic, and ever more like bona fide embryos, complete with placenta tissue. What irked scientists was that Zernicka-Goetz appeared to claim to have finished the race—but did so in the media, without providing any scientific proof. The twist in the story is that there actually was a breakthrough, but it came from a different lab… Read the full story. Antonio is standing in for Jessica Hamzelou, who normally writes The Checkup, her weekly newsletter giving you the inside track on all things biotech. Sign up to receive it in your inbox every Thursday. |
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