Convergent depression of activity-dependent bulk endocytosis in rodent models of autism spectrum disorder.
Katherine Bonnycastle, Mohammed Sarfaraz Nawaz, Peter C Kind and 1 others
PMID 40241211WHAT IT FOUND
Neurons from rat autism models showed reduced bulk membrane retrieval during high activity, while vesicle fusion and cargo retrieval appeared unchanged.
This is a cell-level finding, not a clinical outcome.
Key findings
01Neurons from all five independent monogenic rat autism models showed reduced activity-dependent bulk endocytosis, with no obvious deficit in synaptic vesicle release or cargo trafficking.
02The reduction was seen whether the mutated gene product was presynaptic, postsynaptic, or not overtly presynaptic.
03The findings come from cultured embryonic hippocampal neurons, so they do not show what happens in intact brain circuits or other brain regions.
STILL TO COME
How it was doneWhat they found
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What it does not show
The work was done only in primary neuronal culture, so it cannot assess intact brain microcircuitry. Neurons were embryonic hippocampal neurons, so findings may not extend to other brain regions or mature neurons. The mechanism of ADBE depression was not determined. The hyperexcitability explanation is not proven for all models, including Nlgn3.
Declared interests
The supplied publication types list non-U.S. government research support; no author conflict-of-interest declaration is included.
The easy way to misread this
Do not read this as evidence that a therapy changes bulk endocytosis in humans or that people with autism have this cellular deficit. The study measured cultured rodent neurons, not patients.