Table 1.

Inhibition effect of PDT-BIPA on different types of cell lines ^a.

Cells	Time	IC50/μM
		PDT-PAO	PDT-BIPA
HL-60	24 h	0.50 ± 0.13	0.55 ± 0.01
	48 h	0.42 ± 0.05	1.01 ± 0.23
NB4	24 h	1.15 ± 0.10	1.28 ± 0.11
	48 h	1.22 ± 0.02	1.57 ± 0.38
K562	24 h	1.53 ± 0.46	0.92 ± 0.15
	48 h	0.98 ± 0.22	0.57 ± 0.20
U87	24 h	1.45 ± 0.16	1.75 ± 0.71
	48 h	1.03 ± 0.08	0.88 ± 0.28
HeLa	24 h	1.17 ± 0.23	1.00 ± 0.44
	48 h	0.57 ± 0.08	0.75 ± 0.21
MCF-7	24 h	3.84 ± 0.62	2.56 ± 0.62
	48 h	1.63 ± 0.56	1.58 ± 0.23
GES	24 h	6.71 ± 0.58	6.40 ± 0.56
	48 h	3.29 ± 0.84	4.10 ± 0.20

^a The data (IC₅₀) are expressed as the mean ± SD of at least three independent experiments and the unit is μmol/L.