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| Bioactivity |
Pracinostat is a potent histone deacetylase (HDAC) inhibitor, with IC50s of 40-140 nM, used for cancer research. Pracinostat also inhibits metallo-β-lactamase domain-containing protein 2 (MBLAC2) hydrolase activity with an EC50 below 10 nM[1][4]. |
| Invitro |
Pracinostat (SB939) is a potent novel hydroxamate-based inhibitor of HDACs class I, II, and IV, inhibiting the isolated enzymes with a Ki of 19 to 48 nM (class I), 16 to 247 nM (class II), and 43 nM (class IV), but with no activity against the class III isoenzyme SIRT I. SB939 has effects on HCT-116 colon cancer cell line and the HL-60 acute myeloid leukemia cell line, with IC50s of 0.48 μM and 70 nM, respectively. SB939 does not inhibit the proliferation of normal human dermal fibroblasts at concentrations up to 100 μM[1]. Pracinostat (SB939, compound 3) inhibits CYP2C19 with IC50 of 5.78 μM. SB939 shows potent activities against A2780, COLO 205, HCT-116, and PC-3 cell lines, with IC50s of 0.48 ± 0.21, 0.56 ± 0.08, 0.48 ± 0.27, and 0.34 ± 0.06[2]. Pracinostat downregulates JAK and FLT3 signaling in JAK2V617F and FLT-ITD cell lines, and shows synergy in combination with pacritinib. Pracinostat and pacritinib show in vitro synergy on STAT signaling and apoptosis. Pracinostat potently inhibits proliferation of different AML subtypes as a single agent and is synergistic with pacritinib in JAK2V617F or FLT3-ITD AML cell lines[3]. |
| Name |
Pracinostat |
| CAS |
929016-96-6 |
| Formula |
C20H30N4O2 |
| Molar Mass |
358.48 |
| Transport |
Room temperature in continental US; may vary elsewhere. |
| Storage |
| Powder |
-20°C |
3 years |
| In solvent |
-80°C |
6 months |
|
-20°C |
1 month |
|
