Fig. 8.
Working model of OL action in promoting radiation sensitivity. OL decreases HIF1α expression, which in turn represses miR-519d expression. miR-519d functions to directly target PDRG1 mRNA and inhibit its expression. PDRG1 is able to inhibit radiation sensitivity via the ATM-P53 axis. The overall effect of OL in NPC is then to promote radiation sensitivity