Genetic Suppression of mTOR Rescues Synaptic and Social Behavioral Abnormalities in a Mouse Model of Pten Haploinsufficiency.
Wen-Chin Huang, Youjun Chen, Damon T Page
PMID 31441226WHAT IT FOUND
In mice, reducing mTOR signaling corrected social behavior deficits and brain connectivity issues linked to PTEN mutations, but did not fix brain overgrowth.
Reducing beta-catenin fixed brain overgrowth but did not correct social behaviors.
Key findings
01Reducing mTOR signaling rescued social behavioral deficits and normalized excitatory synaptic markers in the prefrontal cortex in mice with PTEN haploinsufficiency.
02Reducing beta-catenin signaling rescued brain overgrowth but failed to correct social behavioral deficits or synaptic hyperconnectivity.
03Brain overgrowth and social behavioral deficits are dissociable phenotypes, as different genetic suppressions corrected one but not the other.
STILL TO COME
How it was doneWhat they found
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What it does not show
This is a basic science study in mice, not a clinical trial in humans. The study used only female mice, so effects in males are unknown. The interventions were genetic suppressions in the mice, not therapeutic agents available for clinical use. The relevance to human speech-language pathology or occupational therapy is indirect, as it explores molecular mechanisms rather than functional outcomes or treatments.
Declared interests
The authors declare no conflict of interest. The study was supported by NIH and non-U.S. government grants.
The easy way to misread this
Do not interpret this as evidence that mTOR inhibitors or beta-catenin modulators are clinical treatments for autism or social communication disorders. The study identifies molecular pathways in a mouse model, not therapeutic effects in humans.