Journal: Acta Physiologica (Oxford, England)
Article Title: NMDA‐Type Glutamate Receptor Activation Promotes Ischemic Arrhythmias by Targeting the AKT1–TBX3–Nav1.5 Axis
doi: 10.1111/apha.70085
Figure Lengend Snippet: AKT1 is the predominant AKT isoform in myocardium and post‐translationally upregulates TBX3. (a) Protein levels of TBX3 and Nav1.5 in H9C2 cells treated with MK2206 at different time points. (b, c) mRNA levels of Nav1.5 and TBX3 in H9C2 cells treated with MK2206 at different time points. (d) Bioinformatics analysis based on the reported single‐cell transcriptome data. The original dataset is GSE126128 . (e) qRT‐PCR analyses using primers specific to AKT1, AKT2, and AKT3 of human, mice, and H9C2 cells. (f) Screening of the best small hairpin RNAs for AKT1 (sh‐AKT1) using Western blot. (g) AKT1 knockdown caused a decrease in TBX3 protein level and an increase in Nav1.5 protein level. Data from three independent repetitions of experiments are expressed as means ± standard deviations (SDs). Two‐tailed Student's t test was performed for comparison between two groups, and one‐way ANOVA followed by a post hoc Tukey's test was used to compare the data from multiple groups. (* p < 0.05, ** p < 0.01, *** p < 0.001).
Article Snippet: The primary antibodies used were as follows: rabbit polyclonal anti‐NR1 (1:1000, Abcam), rabbit polyclonal anti‐p‐NR1 (1:1000, Abcam), rabbit polyclonal anti‐Nav1.5 (1:1000, Proteintech), rabbit monoclonal anti‐Kv11.1 (1:1000, Abcam), rabbit polyclonal anti‐Kv4.2 (1:1000, Proteintech), mouse monoclonal anti‐Kv7.1 (1:1000, Abcam), rabbit polyclonal anti‐Kir2.1 (1:1000, Proteintech), rabbit polyclonal anti‐Cav1.2 (1:1000, Proteintech), rabbit polyclonal anti‐TBX3 (1:1000, Abcam), mouse monoclonal anti‐Flag M2 (1:1000, Sigma‐Aldrich), rabbit polyclonal AKT (1:1000, Cell Signaling), rabbit polyclonal p‐AKT (1:1000, Cell Signaling), rabbit polyclonal AKT1 (1:1000, Cell Signaling), rabbit polyclonal p‐AKT1 (1:1000, Cell Signaling), mouse polyclonal anti‐tubulin (1:1000, Proteintech), and mouse polyclonal anti‐actin (1:1000, Proteintech).
Techniques: Quantitative RT-PCR, Western Blot, Knockdown, Two Tailed Test, Comparison