Table 3 Synergy of drug combinations.

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

Drug 1 (EC50a)

Drug 2 (EC50a)

HCC1806

HCC1806 + HA-CREB3L1

ZIPb (drug1; drug2)

% Cytotoxicity

ZIPb (drug1; drug2)

% Cytotoxicity

Palbociclib Isethionate (500 nM)

Doxorubicin (13.2 nM)

12.4 (37 nM; 1.37 nM)

50

5.1 (111 nM; 0.08 nM)

26

Palbociclib Isethionate (500 nM)

Paclitaxel (1.2 nM)

6.6 (492 nM; 0.46 nM)

50

8.7 (9000 mM; 1.2 nM)

95

Cladribine (92 nM)

Doxorubicin (13.2 nM)

16.2 (12 nM; 1.37 nM)

21

18.8 (37 nM; 4.12 nM)

24

Cladribine (92 nM)

Paclitaxel (1.2 nM)

9.3 (12 nM; 0.15 nM)

15

24 (79 nM; 0.46 nM)

41

Lanatoside C (143 nM)

Doxorubicin (13.2 nM)

1.3 (31 nM; 111 nM)

55

9.1 (31 nM; 4.12 nM)

17

Lanatoside C (143 nM)

Paclitaxel (1.2 nM)

2.8 (16 nM; 111 nM)

96

12 (151 nM; 0.46 nM)

53

Homoharringtonine (29 nM)

Doxorubicin (13.2 nM)

15.7 (12 nM; 0.46 nM)

21

12.7 (12 nM; 1.37 nM)

14

Homoharringtonine (29 nM)

Paclitaxel (1.2 nM)

51 (12 nM; 0.15 nM)

76

59 (12 nM; 0.15 nM)

83

  1. Significant values are in [bold].
  2. aEC50 as single agent in HCC1806 cells.
  3. bZIP, zero-interaction potency; scores > 10 indicate synergy.