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Table 2 Sensitivity of primary cells to RITA and nutlin3a

From: RITA (Reactivating p53 and Inducing Tumor Apoptosis) is efficient against TP53 abnormalmyeloma cells independently of the p53 pathway

Samples’ characteristics

Cell death

DR5 fold increase

Number

Disease

Status

Origin

t(4;14)

t(11;14)

del(17p)

RITA

Nutlin3a

RITA

Nutlin3a

1

pPCL

D

PB

-

-

0%

0%

16%

1.35

2.51

2

MM

R

BM

-

-

3%

4%

45%

nd

3.31

3

MM

D

BM

+

-

6%

42%

14%

nd

2.22

4

sPCL

R

PB

-

-

6%

11%

87%

1.37

5.03

5

MM

D

BM

+

-

7%

nd

46%

nd

1.20

6

MM

D

BM

+

-

7%

87%

13%

0.84

1.40

7

MM

R

BM

+

-

10%

61%

63%

nd

nd

8

MM

D

BM

-

-

11%

18%

8%

0.86

1.43

9

MM

D

BM

-

-

12%

9%

0%

1.10

2.07

10

MM

D

BM

+

-

13%

14%

14%

0.92

1.38

11

MM

D

BM

-

-

14%

90%

47%

0.83

1.46

12

MM

D

BM

-

-

16%

50%

31%

1.00

1.50

13

MM

R

BM

-

-

18%

4%

35%

1.21

2.29

14

sPCL

R

PB

-

-

19%

29%

48%

0.98

1.28

15

sPCL

R

PB

-

+

68%

98%

17%

1.05

0.98

16

MM

D

BM

-

+

76%

39%

11%

0.92

0.88

17

MM

D

BM

+

-

78%

0%

0%

nd

1.00

18

pPCL

D

PB

+

-

85%

100%

17%

0.90

0.94

19

pPCL

D

PB

-

+

89%

9%

19%

0.81

1.14

20

MM

R

BM

-

+

92%

4%

3%

nd

1.00

21

pPCL

R

PB

-

+

95%

32%

7%

0.99

1.05

22

sPCL

R

PB

-

nd

95%

38%

7%

0.98

1.04

  1. The cells were treated overnight with RITA (1 μM) or nutlin3a (10 μM). The cell death and DR5 expression were assessed by flow cytometry, respectively by the loss of CD138 expression or direct DR5 staining. The DR5 fold increase was calculated by dividing the mean fluorescence ratios (specific over control staining) of treated cells by that of untreated cells. The chromosome 17p deletion and t(14q32) translocations were assessed by FISH.
  2. MM: multiple myeloma, pPCL: primary plasma cell leukemia, sPCL: secondary plasma cell leukemia, D: diagnosis, R: relapse, BM: bone marrow, PB: peripheral blood, nd: not done.