Human Brain Cells Implanted in Rats Prompt Excitement–And Concern

October 14, 2022

(Nature) – Miniature human-brain-like structures transplanted into rats can send signals and respond to environmental cues picked up by the rats’ whiskers, according to a study. This demonstration that neurons grown from human stem cells can interface with nerve cells in live rodents could lead to a way to test therapies for human brain disorders. Scientists would like to use brain organoids — tiny brain-like structures grown from human stem cells — to study neurodegenerative and neuropsychiatric disorders that humans develop. But the organoids mimic human brains only so far. (Read More)