Table 1. pIC50 of Representative Compounds As Measured by AlphaScreen and ΔTm As Measured by DSF.
6 |
7 |
8 |
15 |
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target | ΔTm °Ca,b | pIC50 | ΔTm °Ca,b | pIC50 | ΔTm °Ca,b | pIC50 | ΔTm °Ca,b | pIC50 |
BRD4(1) | 1.4 ± 0.40 (3) | 4.7 (4.6–4.8)c | 2.2 ± 0.15 (3) | 5.7 (5.6–5.8)c | 1.7 ± 0.08 (3) | 5.9 (5.9–5.9)c | 4.3 ± 0.16 (3) | 5.3 ± 0.54 (2)a |
BRD9 | 2.1 ± 0.56 (3) | ND | 3.6 ± 0.31 (3) | 5.9 (5.7–6.1)c | 1.8 ± 0.22 (3) | 5.8 (5.6–6)c | 5.6 ± 0.30 (3) | 6.3 ± 0.12 (2)a |
CECR2 | 1.5 ± 0.54 (3) | 5.3 (5.1–5.5)c | 2.4 ± 0.7 (3) | 5.5 (4.9–6.0)c | 3.2 ± 0.87 (3) | 6.6 (6.5–6.7)c | 3.3 ± 0.14 (3) | 6.3 ± 0.17 (2)a |
CREBBP | 1.6 ± 0.10 (3) | 5.2 ± 0.48 (2)a | 1.9 ± 0.12 (3) | 5.8 (5.5–6.1)c | 0.7 ± 0.1 (3) | 5.9 (5.7–6.2)c | 2.8 ± 0.13 (3) | 4.8 ± 0.061 (3)a |
BAZ2B | 0.03 ± 0.03 (3) | <4d | 0.23 ± 0.09 (3) | <4d | 0.20 ± 0.11 (3) | <4d | –0.013 ± 0.18 (3) | <4d |
PB1(5) | 0.16 ± 0.03 (3) | <4d | –0.18 ± 0.13 (3) | <4d | –0.33 ± 0.05 (3) | <4d | –0.070 ± 0.087 (3) | <4d |
TIF1α | –0.14 ± 0.04 (3) | <4d | –0.27 ± 0.05 (3) | <4d | –0.19 ± 0.06 (3) | <4d | –0.12 ± 0.082 (3) | <4d |
R2e | 0.90 | 0.90 | 0.80 | 0.82 |
Mean ± standard error of the mean (number of determinations).
Compound concentration 10 μM.
pIC50 (95% CI based on duplicate pIC50 measurements).
<25% inhibition at 100 μM.
Coefficient of determination based on a linear correlation between DSF Tm shift (abscissa) and AlphaScreen pIC50 (ordinate).