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A research team at Stanford University in the US announced that they successfully transplanted brain organoids (mini-brains) made from human iPS cells into newborn mice genetically engineered to barely form a cerebral cortex or hippocampus, getting the organoid to integrate with the mouse’s brain and actually function. The findings were published in the online edition of the British journal Nature on September 16. The same team ran a similar experiment with rats back in 2022, but since a rat’s brain grows faster than a human one, the results were of limited use — so this time they used mice that lack most of their brain, giving the transplanted human tissue room to grow. On 5ch, brief comments debating the ethics of the technology were followed by a string of replies bringing up related neuroscience topics.

Human brain organoid transplanted, found to function — in genetically engineered live mice, US university

A Stanford University research team announced in the online edition of the British journal Nature on the 16th that they turned human induced pluripotent stem (iPS) cells into a cluster of brain nerve cells and transplanted them into the cerebrum of newborn mice engineered to lack a cerebral cortex and a hippocampus (the memory center) — and the tissue grew together with the mouse’s brain and began functioning.

(Omitted below — see the source for the full article)

Source: jiji.com / Original article here

※This article is excerpted and summarized from the 5ch (Science News+) thread “Human brain organoid transplanted, found to function — in genetically engineered live mice, US university.”

A thread on 5ch’s “Nandemo Jikkyo G” (anything-goes live-commentary) board went viral after a poster claimed a welfare recipient had bought an iPhone 18 Pro. The purchase appears to have been made with savings rather than a loan, which sparked debate over the system’s rules on how much a welfare payment gets cut when a recipient saves money. Some argued that simply owning the phone isn’t a problem, noting that the Ministry of Health, Labour and Welfare classifies smartphones as necessary equipment for recipients’ self-reliance, while others questioned why such an expensive iPhone was chosen over cheaper alternatives — leaving the thread split.

*This article is compiled as an excerpt and summary of the 5ch (“Nandemo Jikkyo G”) thread “[Image] Welfare Recipient Buys an iPhone 18 Pro! LOLOLOLOLOLOLOLOLOLOLOLOLOLOLOLOL.”