Periodic Reporting for period 1 - SynPCP (Synapse formation and maturity through planar cell polarity pathway)
Reporting period: 2018-03-01 to 2020-02-29
Here, we used single molecule super-resolution microscopy combined with tessellation-based analysis to quantify the molecular organization and dynamics of various dendritic spine proteins at the single-molecule level. We show a very specific spatial correlation of Scribble with specific components of the dendritic spines. Expression of mutated forms of Scribble found in ASD and spina bifida modified PSD-95 nanoscale organization in spines along dendrites. These Scribble mutations affect PSD-95 clustering and nano-clustering in terms of size and number differently. Altogether, we identify a critical role for Scribble in PSD95 nanoscale organization that regulate the accumulation of AMPAR and spine plasticity.
1. Scrib levels regulate differently PSD95 organization in proximal and distal spine
2. Scrib mutations studied disrupt the link between Scrib and actin structure,
3. Scrib mutations disrupt the organization on dendritic spines through the disruption of clustering and nanoclustering of postsynaptic proteins
Results of this project have not yet been published in a peer-reviewed journal