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Table 3 IC50 values of compounds isolated Brucea antidysenterica towards the investigated cell lines

From: Cytotoxicity of the methanol extracts and compounds of Brucea antidysenterica (Simaroubaceae) towards multifactorial drug-resistant human cancer cell lines

Cell lines

Samples, IC50 (in µM) and D.R.* or S.I.** (in bracket)

 

1

2

3

4

5

6

7

CCRF-CEM

19.11 ± 1.56

4.28 ± 0.31

28.42 ± 1.76

31.99 ± 2.16

44.22 ± 3.52

23.19 ± 1.63

20.38 ± 0.94

CEM/ADR5000

Degree of resistance*

32.03 ± 2.05

(1.68)

3.07 ± 0.18

(0.72)

73.94 ± 5.32

(2.60)

 > 100

(> 3.13)

 > 100

(> 2.26)

 > 100

(> 4.31)

 > 100

(> 4.91)

MDA-MB-231-pcDNA

13.40 ± 0.93

4.07 ± 0.37

 > 100

 > 100

 > 100

 > 100

 > 100

MDA-MB-231-BCRP

Degree of resistance

47.50 ± 2.75

(3.54)

6.65 ± 0.24

(1.63)

 > 100

 > 100

 > 100

 > 100

 > 100

HCT116 p53+/+

23.86 ± 2.32

11.44 ± 0.98

 > 100

 > 100

24.72 ± 2.16

 > 100

 > 100

HCT116 p53−/−

Degree of resistance

36.43 ± 3.04

(1.53)

6.74 ± 0.33

(0.59)

50.48 ± 3.81

(< 0.50)

32.16 ± 2.37

(< 0.32)

20.97 ± 1.72

(0.85)

 > 100

 > 100

U87MG

24.25 ± 1.16

9.29 ± 0.73

 > 100

28.29 ± 2.08

19.58 ± 1.55

 > 100

 > 100

U87MG.ΔEGFR

Degree of resistance

36.28 ± 3.01

(1.50)

5.42 ± 0.44

(0.58)

 > 100

28.32 ± 1.66

(1.00)

21.12 ± 1.49

(1.08)

 > 100

 > 100

HepG2

39.94 ± 2.84

2.73 ± 0.19

85.16 ± 5.70

31.17 ± 2.11

26.09 ± 1.63

15.48 ± 1.06

 > 100

AML12

Selectivity index**

 > 100

(> 2.50)

51.16 ± 3.20

(18.74)

 > 100

(> 1.17)

 > 100

(> 3.21)

 > 100

(> 3.83)

 > 100

(> 6.46)

 > 100

  1. (*): (*): Degree of resistance (D.R.): ratio of IC50 vs IC50 in the sensitive cell line; CEM/ADR5000 vs CCRF-CEM, MDA-MB-231-BCRP vs MDA-MB-231-pcDNA, HCT116 p53−/− vs HCT116 p53+/+ and U87.MGΔEGFR vs U87.MG; (**): Selectivity index (S.I): ratio of IC50 in AML12 vs IC50 in HepG2 cells [13, 48]; Tested samples were: 3, (3-(3-Methyl-1-oxo-2-butenyl))1H indole (1), hydnocarpin (2), (20R)-O-(3)-α-L-arabinopyranosyl-pregn-5-en-3β,20-diol (3), (20R)-O-(3)-β-D-glucopyranosyl(1 → 2)-α-L-arabinopyranosyl-pregn -5-en-3β,20-diol (4), canthin-6-one (5), cleomiscosin C (6), bruceolline F (7). In bold: significant cytotoxic effect [9, 72]. Data for Doxorubicin used as positive control are available in Table 2