To induce IH, balloon injury of common carotid artery was performed in Sprague-Dawley rats. Immediately after the injury, lentivirus was intra-luminally infused into the injured artery wall to express scrambled or DOT1L-specific shRNA. In a separate experiment, the AURKB-selective inhibitor barasertib (10 mg/kg) was applied in perivascular hydrogel. Arteries were collected 14 days after injury for immunostaining or morphometric analysis. N, neointima (between arrows); M, media; A, adventitia. Scale bar:100 μm.
A. DOT1L silencing reduces AURKB. Quantification: Mean ± SEM, n=4 rats; unpaired Student’s t-test: *p<0.05.
B-C. AURKB inhibition mitigates IH (neointima vs media area ratio). Quantification: Mean ± SEM, n= 6 rats; unpaired Student’s t-test: *p<0.05.