Journal: The Journal of Clinical Investigation
Article Title: Spinal α 2 δ -1 induces GluA3 degradation to regulate assembly of calcium-permeable AMPA receptors and pain hypersensitivity
doi: 10.1172/JCI193349
Figure Lengend Snippet: ( A ) Changes in the hindpaw withdrawal thresholds of sham control and SNL rats 2 and 3 weeks after intrathecal injection of control (Cont) lentiviral vectors or lentiviral vectors expressing Gria3 ( n = 13 rats per group). ** P < 0.01, *** P < 0.001; 2-way ANOVA followed by Tukey’s post hoc test. ( B and C ) Representative immunoblot images ( B ) and quantification ( C ) show the protein levels of GluA3 and GluA2/GluA3 complexes in the dorsal spinal cords of sham control and SNL rats treated with intrathecal control lentiviruses or Gria3 -expressing lentiviruses ( n = 8 rats per group). Protein extracts from spinal cord tissues were immunoprecipitated (IP) using a GluA2 antibody or IgG. Immunoblotting was then conducted using GluA2, GluA3, and β-actin antibodies. β-Actin protein bands were used as the internal control on the same gel. ** P < 0.01, *** P < 0.001; 2-way ANOVA followed by Tukey’s post hoc test. ( D and E ) Representative recording traces ( D ) and quantification ( E ) show the differential effect of bath application of IEM-1460 (50 μM) on the amplitude of monosynaptic AMPAR-EPSCs in spinal lamina II neurons from SNL rats treated with intrathecal injection of control lentiviruses or Gria3 -expressing lentiviruses ( n = 18 neurons from 4 rats per group). Data were normalized to the baseline value (100%) before IEM-1460 application. * P < 0.05, ** P < 0.01 versus control vector group at the same time point; 2-way ANOVA followed by Tukey’s post hoc test. Data are presented as mean ± SEM.
Article Snippet: The rabbit anti-GluA3 antibody (mAb5117, Cell Signaling Technology) or rabbit anti-GluA2 antibody (AB10529, EMD Millipore) was preincubated with protein G agarose beads at 25°C for 1 h, and the protein samples were then exposed to the antibody-conjugated beads at 4°C overnight.
Techniques: Control, Injection, Expressing, Western Blot, Immunoprecipitation, Plasmid Preparation