STAT3-mediated activation of mitochondrial pathway contributes to antitumor effect of dihydrotanshinone I in esophageal squamous cell carcinoma cells

Table 1 IC₅₀ of dihydrotanshinone I in esophageal squamous cell carcinoma cells and normal esophageal epithelial cells

	Time of treatment	IC50 (μmol/L)	95%CI (μmol/L)
KYSE30	12 h	1.313	0.962-1.675
	24 h	0.697	0.438-0.961
	36 h	0.407	0.219-0.607
Eca109	12 h	9.750	8.363-11.499
	24 h	5.895	3.766-9.633
	36 h	2.279	1.700-2.988
KYSE450	12 h	18.890	13.967-28.640
	24 h	13.878	10.287-20.148
	36 h	9.196	6.849-12.921
KYSE510	12 h	13.962	12.063-16.416
	24 h	9.943	7.675-13.496
	36 h	6.325	4.831-8.423
Het-1A	12 h	778.956	216.388-175793.136
	24 h	758.751	238.424-20168.744
	36 h	632.324	227.536-6313.869