Somatostatin-expressing interneurons of prefrontal cortex modulate social deficits in the Magel2 mouse model of autism.
Xiaona Wang, Mengyuan Chen, Daoqi Mei and 10 others
PMID 40069835WHAT IT FOUND
In Magel2 knockout mice, brain cells called somatostatin cells in the prefrontal cortex were less active during social interaction.
Inhibiting them reduced social interaction; activating them increased time with a novel mouse. No human therapy was tested.
Key findings
01Magel2 knockout mice did not prefer a novel mouse over an empty cage and had a lower social discrimination index than control mice.
02Prefrontal somatostatin interneurons in Magel2 knockout mice required more current to fire and showed little calcium signal change when interacting with a novel mouse.
03Silencing prefrontal somatostatin neurons in control mice reduced social preference, while activating these neurons or their lateral septum projections in Magel2 knockout mice increased time with a novel mouse.
STILL TO COME
How it was doneWhat they found
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What it does not show
The study was done in male mice, not in people, and the interventions used brain surgery, viruses, light stimulation or CNO. The social measure was time near a novel mouse in a three-chamber box, not communication, play, learning or daily participation in humans. The mice modelled Magel2-related conditions, so the findings may not apply to other causes of autism. Behavioural groups had 10 mice each, a small number for testing general effects. The paper does not report a therapy that a therapist could deliver to a patient.
Declared interests
The supplied text does not include an author conflict-of-interest declaration. The publication types list research support from a non-U.S. government.
The easy way to misread this
Do not read this as evidence that activating brain cells can treat autism in people. The rescue was seen only in Magel2 knockout mice after direct manipulation of medial prefrontal cortex neurons with light or CNO. No human patients were treated.