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. 2021 Feb 4;11:110. doi: 10.1038/s41398-021-01212-1

Fig. 3. DISC1 regulates BMAL1 stability, and knockout of Disc1 damps the oscillation of BMAL1.

Fig. 3

a GFP-BMAL1 and Flag-DISC1 were co-transfected into HEK293 cells. Empty Flag vector was used as a control. b Quantification of GFP-BMAL1 levels from (a) relative to tubulin control (n = 5, biological replicates). c Endogenous BMAL1 protein expression was decreased in Disc1 knockout (Disc1-LI) MEFs. d Quantification of BMAL1 protein levels from (c) with tubulin control (n = 5, biological replicates). e Endogenous BMAL1 protein levels were measured in MEFs following treatment with 1 μM of dexamethasone to synchronize the circadian cycle. f Quantification of BMAL1 protein levels from (e) relative to tubulin control (n = 3 for each time point, biological replicates). The ratios of the relative band intensity at each time point to the band intensities averaged across all time points were presented. gj mRNA levels of circadian genes measured by qRT-PCR after dexamethasone synchronization (n = 3 for each time point, biological replicates). The expression of circadian genes was reduced in Disc1 knockout MEFs. The panels show levels of Per1 (g), Per2 (h), Cry1 (i), and Bmal1 (j). Data are means with SEM. *p ≤ 0.05, **p ≤ 0.01, #p ≤ 0.0001, unpaired t-test for (b, d); two-way ANOVA and Sidak’s multiple comparisons for (fi), and (j).