B2. IL-1β level of cells in each group measured by ELISA.
	Blank	OGD	OGD+S	OGD+S+oe-NC	OGD+S+oe-G9a	F value	DF
IL-1β (ng/L)	501.2±40.8	826.4±56.1*	624.1±37.7**	630.7±51.3	851.2±47***	29.81	4

One-way ANOVA was used to compare the mean difference among the five groups. Tukey’s multiple comparisons test was used for post hoc test,

^*p<0.001 between blank group and OGD group,

^**p<0.05 between OGD group and OGD+S group,

^***p<0.05 between OGD+S group and OGD+S+oe-G9a group.