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ARQ 531 is a potent reversible inhibitor of BTK (IC50 = 0.85 nM), exhibits potent antitumor activity in ibrutinib-resistant diffuse large B-cell lymphoma. ARQ 531 targets multiple oncogenic signaling pathways in both ABC- and GCB-DLBCL cell lines. Unlike ibrutinib, ARQ 531 suppressed both the upstream activating signals (via inhibition of a select member of Src kinase family) and the downstream signaling pathways (via pAKT and pERK kinases). In GCB-DLBCL cell lines (SUDHL-4 and DOHH-2), ARQ 531 potently suppressed expression of anti-apoptotic c-Myc and BCL6 oncoproteins in a dose dependent fashion, and concomitantly induced apoptotic cleavage of PARP protein.
In the ibrutinib-resistant SUDHL-4 mouse xenograft model, ARQ 531 potently suppressed tumor growth (>80% inhibition) compared to the control group when dosed orally at 75 mg/kg. Additionally, preliminary data suggest that ARQ 531 crosses the blood, brain-barrier.
| Molecular Weight | 478.93 |
| Formula | C25H23ClN4O4 |
| CAS Number | 2095393-15-8 |
| Solubility (25°C) | DMSO ≥ 80 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related BTK Products |
|---|
| PCI-32765
PCI-32765 (Ibrutinib) is a potent, selective and orally bioavailable irreversible inhibitor of BTK with IC50 value of 0.46 nM. |
| Spebrutinib (AVL-292)
Spebrutinib (AVL-292) is an oral, potent and selective small molecule covalent inhibitor of Btk (IC50 < 0.5 nM). |
| CNX-774
CNX-774 is an irreversible, orally active, and highly selective BTK inhibitor with IC50 of <1 nM. |
| GDC-0834
GDC-0834 is a novel potent and selective BTK inhibitor with IC50 of 5.9 nM. |
| CGI1746
CGI1746 is a potent and highly selective small-molecule inhibitor of the Btk with IC50 of 1.9 nM. |
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Products are for research use only. Not for human use. We do not sell to patients.
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