Hippocampal CA3-CA1 synaptic rescue via DHHC2-mediated PSD95 palmitoylation stabilization

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## Molecular Mechanism and Rationale The core mechanism centers on DHHC2 palmitoyltransferase-mediated post-translational modification of PSD95, which is essential for maintaining synaptic scaffold stability at hippocampal CA3-CA1 synapses. Under normal conditions, DHHC2 catalyzes the reversible palmitoylation of PSD95 at cysteine residues 3 and 5, promoting its membrane association and preventin