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Table 4 Modulation of cytotoxicity by zosuquidar and the P-gp activity in 31 patient cells

From: Zosuquidar restores drug sensitivity in P-glycoprotein expressing acute myeloid leukemia (AML)

  

RMF

Uptake

 

Resistance Modifiding

DNR/Ida

MITOX

Mylotarg

DIOC2 +Zosu

P01

No

1.1

0.6

1.0

0.06

P02

Yes/DNR, Ida, Mylotarg

2.3/3.2

20%

35%e

0.53

P03

No

0.7

ND

0.8

0.05

P04

No

0.8

ND

1.3

0.1

P05

No

1.1

0.92

1.1

0.05

P06

Yes/Mylotarg

ND

ND

4.1

0.7

P07

Yes/Mylotarg

1.6

ND

29%

0.46

P08

No

1.0

ND

1.2

0.13

P09

No

0.7/1.2

ND

1.0

0.24

P10

No

1.0/1.0

ND

1.0

0.33

P11

No

0.9

ND

13%

0.4

P12

Yes/MITOX

ND

2.1

ND

0.6

P13

No

0.9

1.1

0.9

0.13

P14

No

1.1

ND

ND

0.23

P15

No

1.1

1.3

1.0

0.13

P16

Yes/DNR, Mitox

6.6

2.1

ND

0.04

P17

No

1.0

1.0

0.9

0.05

P18

No

1.1

0.9

1.0

0.06

P19

No

1.0

1.0

1.0

0

P20

Yes/DNR, Mylotarg

1.4

ND

3

0.38

P21

No

ND

ND

0.5

0.12

P22

No

1.2

1

1

0.21

P23

No

1.1

1.0

1.0

0.21

P24

No

ND

ND

1.1

0.06

P25

Yes/DNR, Mitox, Mylo

2.5

2.3

30%

0.05

P26

No

1

ND

ND

0.04

P27

No

0.87

0.82

ND

0.24

P28

No

0.7

1.2

ND

0

P29

Yes/Mylotarg

ND

ND

2.0

0.04

P30

No

1.0

1.1

1.0

0.08

P31

No

1.2

ND

9%

0.26

  1. a. RMF: ratio of IC50 in the presence of zosuquidar over the IC50 in the absence of zosuquidar.
  2. b. The concentration of DNR, Ida and Mitox was varied from 5 to 1000 nM.
  3. c. The concentration of Mylotarg was varied from 12.5 to 1000 ng/ml.
  4. d. ND: Non determiner due to missing the cells, or IC50 was out of the concentration measured.
  5. e. Results on percentage when IC50 could not be able to determine, and X% cell death more in presence of zosuquidar than without zosuquidar.