Topic

Mouse brains host human organoids

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Researchers transplanted lab-grown human cerebral organoids into mice engineered without a cortex, where the tissue grew, integrated with neural circuits and produced its own activity, prompting ethical debate.

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Just out in Nature an extraordinary paper by @sergiuppasca.bsky.social and his team who genetically altered mice & transferred organoids derived from human neural cells into the cortex. @anilseth.bsky.social and I explore the ethical implications in a forthcoming commentary.
September 16, 2026 at 6:08 PM
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Breakthrough in Science: “Human brain cells transplanted into mice in ‘most extensive’ integration ever”
nitafarahany.substack.com/p/breakthrou...
Breakthrough in Science: “Human brain cells transplanted into mice in ‘most extensive’ integration ever”
A quite aside from our regularly schedule class
nitafarahany.substack.com
September 16, 2026 at 6:05 PM
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STAT+: Scientists made mice with half a brain. Then they filled them with human organoids www.statnews.com/2026/09/16/h...
Scientists made mice with half a brain. Then they filled them with human organoids
Scientists have made mice with half a brain, then filled them with human organoids — possibly opening new avenues for research but also raising ethical issues.
www.statnews.com
September 16, 2026 at 5:43 PM
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4/6 The Stanford team have been thorough and proactive in addressing ethical concerns that comes from this frontier work. But their pioneering work nonetheless raises many open questions: are the xenocortical mice conscious? Do they have any human-like properties of consciousness or cognition?
September 16, 2026 at 5:29 PM