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It’s no carbon copy. Macaque monkeys in Shanghai have been genetically engineered to display autism-like behaviour. Compared with other macaques, they spend less time interacting with other monkeys and are more anxious when people come into their cages.
These monkeys have extra copies of a gene called MECP2, which has been linked to autism. It produces the MECP2 protein, which is essential in nervous systems, but people who have extra copies of this gene are sometimes diagnosed as autistic and also have severe intellectual disabilities.
By replicating this extra dose of MECP2 in macaques, researchers at the Chinese Academy of Sciences’s Institute of Neuroscience in Shanghai say they have created monkeys that will help us learn about this poorly understood condition. But other researchers are divided on whether such a diverse condition that is tied to human behaviour can be meaningfully reproduced in monkeys.
Running in circles
Zilong Qiu and his team believe that while many different, rare mutations are likely to lead to conditions that present as autism, these may affect common circuits in...