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• W3157824934 abstract "Neurons maintain stable levels of excitability using homeostatic synaptic scaling, which adjusts the strength of a neuron's postsynaptic inputs to compensate for extended changes in overall activity. Here, we investigated whether prolonged changes in activity affect network-level protein interactions at the synapse. We assessed a glutamatergic synapse protein interaction network (PIN) composed of 380 binary associations among 21 protein members in mouse neurons. Manipulating the activation of cultured mouse cortical neurons induced widespread bidirectional PIN alterations that reflected rapid rearrangements of glutamate receptor associations involving synaptic scaffold remodeling. Sensory deprivation of the barrel cortex in live mice (by whisker trimming) caused specific PIN rearrangements, including changes in the association between the glutamate receptor mGluR5 and the kinase Fyn. These observations are consistent with emerging models of experience-dependent plasticity involving multiple types of homeostatic responses. However, mice lacking Homer1 or Shank3B did not undergo normal PIN rearrangements, suggesting that the proteins encoded by these autism spectrum disorder-linked genes serve as structural hubs for synaptic homeostasis. Our approach demonstrates how changes in the protein content of synapses during homeostatic plasticity translate into functional PIN alterations that mediate changes in neuron excitability." @default.
• W3157824934 created "2021-05-10" @default.
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• W3157824934 date "2021-05-04" @default.
• W3157824934 modified "2023-09-29" @default.
• W3157824934 title "Remodeling of the Homer-Shank interactome mediates homeostatic plasticity" @default.
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• W3157824934 doi "https://doi.org/10.1126/scisignal.abd7325" @default.
• W3157824934 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8300860" @default.
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• W3157824934 hasPublicationYear "2021" @default.
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