AMPA receptor (GluA2) - "Activation, potentiation and inhibition of AMPA receptors on the SyncroPatch 384PE"
SyncroPatch 384PE application note: (3.1 MB)
Cells were kindly provided by SB Drug Discovery.
AMPA receptors are cation-permeable ionotropic glutamate receptors of the non-NMDA receptor subfamily. To date four subunits, GluA1-4, have been identified which are of similar size (approx. 900 kDa) and share 68-73% amino acid sequence identity. The functional receptor exists as a tetramer, either as homomers or heteromers (GluA1 and GluA4). The vast majority of excitatory fast synaptic transmission in the mammalian central nervous system is mediated by AMPA receptors of differing subunit combinations. It is well known that glutamate is a neurotoxin and it is proposed that overactivation of ionotropic glutamate receptors may underlie many neurodegenerative disorders such as ischemic stroke, epilepsy, Parkinson’s and dementia, amongst others. Here we present data collected on the SyncroPatch 384PE showing recordings of GluA2-mediated currents. Glutamate activated GluA2 receptors with an EC50 similar to those reported in the literature. CNQX inhibited and LY404187 enhanced GluA2-mediated responses.