Definition
ChEBI: NAV2729 is a pyrazolopyrimidine that is 4H-pyrazolo[1,5-a]pyrimidin-7-one which is substituted at positions 2, 3, and 5 by benzyl, p-chlorophenyl, and p-nitrophenyl groups, respectively. It is an inhibitor of ADP-ribosylation factor 6 (ARF6), a member of the ADP ribosylation factor family of GTP-binding proteins. It has a role as an inhibitor. It is a pyrazolopyrimidine, a C-nitro compound and a member of monochlorobenzenes.
Biological Activity
NAV-2729 (IC50 of\u20091.5\u2009μM) has a therapeutic benefit in reducing the adverse effect of diabetic retinopathy in animal models.', 'Originally characterized as a non-nucleotide-competitive and reversible ARF6-selective inhibitor (IC50 = 1.4 μM without GEF and 2.4 μM with 100 nM ARNO or BRAG2/GEP100) th at targets ARF6 GEF-binding region, NAV-2729 prevents GEF-dependent ARF1 & ARF6 activity (% inhibition of BRAG2Sec7PH-stimulated GTPase activity/[NAV-2729] = 50% Δ17Arf1/10 μM and 15% Δ13Arf6/25 μM) with higher potency against BRAG2- than ARNO-dependent ARF1 activity (64% vs. 20% Δ17Arf1 inhibition at 25 μM in the presence of respective GEF sec7 domain). NAV-2729 treatment effectively inhibits G-alpha-q downstream signaling pathways and anchorage-independent colony growth of Mel92.1 & Mel202 melanoma cells in vitro (10 μM) as well as uveal melanoma tumor establishment in Mel202 xenograft mice in vivo (30 mg/kg/day i.p.).
