Table 2 EC50 values across multiple CREB3L1-deficient TNBC and luminal A breast cancer cell lines.

From: Homoharringtonine demonstrates a cytotoxic effect against triple-negative breast cancer cell lines and acts synergistically with paclitaxel

Cell line

Palbociclib Isethionate

Cladribine

Lanatoside C

Homoharringtonine

Parental EC50, nM (na)

Parental + HA-CREB3L1 EC50, nM (na)

Parental EC50, nM (na)

Parental + HA-CREB3L1 EC50, nM (na)

Parental EC50, nM (na)

Parental + HA-CREB3L1 EC50, nM (na)

Parental EC50, nM (na)

Parental + HA-CREB3L1 EC50, nM (na)

BT549

12600 ± 4800 (9)

 

178 ± 84 (9)

 

42 ± 12 (9)

 

89 ± 10 (9)

 

HCC1395

4000 ± 2000 (6)

 

10100 ± 1200 (6)

 

510 ± 300 (6)

 

104 ± 31 (6)

 

HCC1806

500 ± 130 (9)

1300 ± 490 (9)

92 ± 44 (9)

182 ± 60 (9)

143 ± 85 (9)

233 ± 100 (9)

29 ± 4 (9)

42 ± 7 (9)

HCC38

210 ± 70 (9)

 

65 ± 56 (9)

 

300 ± 100 (9)

 

58 ± 10 (9)

 

Hs578T

3200 ± 1400 (4)

 

5700 ± 1200 (4)

 

1000 ± 800 (4)

 

42 ± 24 (4)

 

MDA-MB-157

ND

 

5000 ± 4300 (4)

 

550 ± 240 (4)

 

7.5 ± 1.2 (4)

 

MDA-MB-436

17000 ± 14000 (4)

 

660 ± 180 (4)

 

460 ± 250 (4)

 

33 ± 36 (4)

 

HCC1428

21 ± 15 (4)

160 ± 250 (4)

740 ± 330 (4)

2200 ± 1700 (4)

35 ± 8 (4)

32 ± 8 (4)

9 ± 3 (4)

10 ± 3 (4)

MCF7

4400 ± 3500 (4)

 

3400 ± 2100 (4)

 

450 ± 490 (4)

 

18 ± 9 (4)

 

T47D

13000 ± 9800 (4)

7200 ± 9200 (4)

9600 ± 1800 (6)

1800 ± 1300 (6)

500 ± 50 (4)

89 ± 34 (4)

400 ± 180 (6)

88 ± 55 (6)

ZR-75-1

710 ± 350 (8)

 

750 ± 350 (9)

 

650 ± 510 (9)

 

117 ± 35 (9)

 
  1. n, number of replicate measurements.
  2. aCell viability was determined over a range of drug concentrations after 4 days of drug treatment and EC50 values were determined.