The abstract is read at the publisher; the summary is JClub's.
FMRP loss in cortical excitatory versus inhibitory synapses of hemizygous and heterozygous Fmr1-deficient mice causes cell type-specific mRNA and protein remodeling, with opposing protein changes in each subtype.
- Why it matters: Bulk homogenates and averaged synaptic fractions can mask synapse-type-specific molecular alterations that likely underlie synaptopathies in Fragile X Syndrome and related neurodevelopmental disorders.
- What they did: Using fluorescence-activated synaptosome sorting, the study isolated cortical excitatory and inhibitory synapses from hemizygous and heterozygous Fmr1-deficient mice, then profiled mRNAs by RNA-sequencing and proteins by mass spectrometry.
- The result: Only a minority of dysregulated mRNAs/proteins were shared across synapse types, and mRNA–protein changes were poorly coordinated, suggesting post-transcriptional control including translational and ubiquitin-dependent degradation machinery such as CAND1.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.