| Bioactivity | ZL0420 is a potent and selective bromodomain-containing protein 4 (BRD4) inhibitor with IC50 values of 27 nM against BRD4 BD1 and 32 nM against BRD4 BD2. | ||||||||||||
| Target | IC50: 27 nM (BRD4 BD1), 32 nM (BRD4 BD2) | ||||||||||||
| Invitro | ZL0420 is well docked into the acetyl-lysine (KAc) binding pocket of BRD4, forming key interactions including the critical hydrogen bonds with Asn140 directly and Tyr97 indirectly via a H2O molecule. ZL0420 exhibits submicromolar potency of inhibiting the TLR3-dependent innate immune gene program, including ISG54, ISG56, IL-8, and Groβ genes in cultured human small airway epithelial cells (hSAECs) with IC50s of 0.49-0.86 µM[1]. | ||||||||||||
| In Vivo | ZL0420 demonstrates potent efficacy reducing airway inflammation in a mouse model with low toxicity. ZL0420 displays high efficacy and almost completely blocks the profound accumulation of neutrophils around the small and medium sized airways induced by poly(I:C) administration[1]. | ||||||||||||
| Name | ZL0420 | ||||||||||||
| CAS | 2230496-80-5 | ||||||||||||
| Formula | C16H16N4O2 | ||||||||||||
| Molar Mass | 296.32 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Liu Z, et al. Discovery of potent and selective BRD4 inhibitors capable of blocking TLR3-induced acute airway inflammation. Eur J Med Chem. 2018 May 10;151:450-461. |