B1. TNF-α level of cells in each group measured by ELISA.
	Blank	OGD	OGD+S	OGD+S+oe-NC	OGD+S+oe-G9a	F value	DF
TNF-α (ng/L)	30.2±5.1	65.1±3.7*	51.1±5.3**	48.7±5.7	67.2±4.9***	26.81	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.