Research Article

Metformin-Induced MicroRNA-34a-3p Downregulation Alleviates Senescence in Human Dental Pulp Stem Cells by Targeting CAB39 through the AMPK/mTOR Signaling Pathway

Figure 3

Metformin inhibits senescence in DPSCs. Young and aging DPSCs were treated with 100 μM metformin for 48 h. (a) Cellular senescence was determined using SA-β-gal staining. Representative images are shown (scale bar: 20 μm). (b) Quantitative analysis of SA-β-gal-positive cells. (c) Representative blots of p53, p21, and p16 protein expression levels by western blotting. (d) Quantitative analysis of p53, p21, and p16 proteins. Data are expressed as the (). , with comparisons indicated by lines.
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