ARQ 531_product_DataBase

Bioactivity

ARQ 531 (MK-1026) is a reversible non-covalent and orally active inhibitor of Bruton’s Tyrosine Kinase (BTK), with IC50s of 0.85 nM and 0.39 nM for WT-BTK and C481S-BTK, respectively.

Target

IC50: 0.85 nM (WT-BTK), 0.39 nM (C481S-BTK).

Invitro

ARQ 531 shows strong target inhibition in TMD8 cell line. The IC50 values are 0.85 nM and 0.39 nM for WT-BTK and C481S-BTK, respectively, in biochemical assay. Additionally, ARQ 531 also shows strong inhibition of TEK kinases with IC50s of 5.23 nM (BMX), 5.80 nM (TEC), 36.4 nM (TXK). The IC50s of ARQ 531 for SRC kinases are 3.86 nM (LCK), 4.22 nM (YES), 9.71 nM (BLK), 18.3 nM (HCK), 18.8 nM (LYNa), 25.9 nM (FGR), 32.2 nM (FYN), 48.0 nM (FRK) and for TRK kinases are 11.7 nM (TrkB), 13.1 nM (TrkA), 19.1 nM (TrkC). ARQ 531 inhibits proliferation of diverse types of cell lines (TMD8: GI50=0.13 μM, REC1: GI50=0.18 nM) and shows potency in cell lines that are addict to BCR, Src-family kinase and PI3K/AKT pathways.

In Vivo

ARQ 531 is efficacious in TMD-8 tumor xenograft model. ARQ 531 causes complete tumor regression after 14 days of treatment. ARQ 531 is also efficacious in collagen induced arthritis model. ARQ 531 demonstrates potent efficacy against arthritis in mouse model. In the BTK driven TMD8 xenograft mouse model, ARQ 531 demonstrates excellent anti-tumor activity with durable response. ARQ 531 demonstrates in vivo efficacy in a mouse collagen-induced arthritis (CIA) model[1].

Name

ARQ 531

CAS

2095393-15-8

Formula

C25H23ClN4O4

Molar Mass

478.93

Appearance

Solid

Transport

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Reference

[1]. S Eathiraj, et al. Targeting PCI-32765-Resistant BTK-C481S Mutation with ARQ 531, a Reversible Non-Covalent Inhibitor of BTK. Clinical Lymphoma Myeloma & Leukemia, 2016, 16: S47-S48.

PeptideDB

ARQ 531

CAS: 2095393-15-8 F: C25H23ClN4O4 W: 478.93