ttp://www.jbc.org/content/285/10/7619.full
We then assessed the expression of AMPAR subunits in the N2A cells used for the screen. Compared with primary hippocampal neurons, our N2A cells expressed low but detectable levels of AMPAR subunit RNA (data not shown). Western blotting with multiple antibodies revealed that the N2A cells expressed proteins that cross-reacted with GluR1, GluR2/3, and Glur4 antibodies (supplemental Fig. 1B). However, for each protein the banding pattern from hippocampal neurons and N2A cells was different. Given that the physiological relevance of bADDL binding with N2A cells is unclear, and particularly that those cells lack dendritic spines and express low levels of the neuronal AMPAR proteins, we focused on primary hippocampal neurons to assess the involvement of these two molecules in the Aβ oligomeric-synaptic interaction without further characterization of the N2A findings. |
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