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Long-term potentiation reconstituted with an artificial TARP/PSD-95 complex.

ABSTRACT: The critical role of AMPA receptor (AMPAR) trafficking in long-term potentiation (LTP) of excitatory synaptic transmission is now well established, but the underlying molecular mechanism is still uncertain. Recent research suggests that PSD-95 captures AMPARs via an interaction with the AMPAR auxiliary subunits-transmembrane AMPAR regulatory proteins (TARPs). To determine if such interaction is a core minimal component of the AMPAR trafficking and LTP mechanism, we engineered artificial binding partners, which individually were biochemically and functionally dead but which, when expressed together, rescue binding and both basal synaptic transmission and LTP. These findings establish the TARP/PSD-95 complex as an essential interaction underlying AMPAR trafficking and LTP.

SUBMITTER: Ravi AS

PROVIDER: S-EPMC9797105 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Long-term potentiation reconstituted with an artificial TARP/PSD-95 complex.

Ravi Anagh Sinha AS Zeng Menglong M Chen Xudong X Sandoval Gerardo G Diaz-Alonso Javier J Zhang Mingjie M Nicoll Roger A RA

Cell reports 20221001 2

The critical role of AMPA receptor (AMPAR) trafficking in long-term potentiation (LTP) of excitatory synaptic transmission is now well established, but the underlying molecular mechanism is still uncertain. Recent research suggests that PSD-95 captures AMPARs via an interaction with the AMPAR auxiliary subunits-transmembrane AMPAR regulatory proteins (TARPs). To determine if such interaction is a core minimal component of the AMPAR trafficking and LTP mechanism, we engineered artificial binding ...[more]

PMID: 36223737

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