In vitro activity: DMOG shows only weakly active in the microsomal system, but efficiently suppresses hydroxyproline synthesis in intact cells. DMOG reduces FGF-2-induced proliferation and cyclin A expression by inhibiting prolyl hydroxylase activity in HPASMC.

Kinase Assay:

Cell Assay: To analyze DNA synthesis as an index of cellular proliferation, VSMC are plated in 48-well plates (5,000 per square centimeter) in growth medium, incubated overnight, and serum-deprived (1% FCS) for 24 h. Replicate wells are then stored at –70°C for baseline (day 0) cell counts, and fresh medium with or without growth factors is added to the remaining wells, which are incubated 72-96 h in 20 or 5% O2. Days 0 and 3 or 4 cell counts are determined by lysing cells in a buffer containing a fluorescent dye, which has minimal fluorescence by itself but fluoresces when bound to DNA or RNA. Absolute cell numbers are calculated by comparing the fluorescence of specimens with that of a standard curve similarly prepared using a known number of cells.

Biochem J. 1994 Jun 1;300 ( Pt 2):525-30; J Physiol. 2004 Oct 1;560(Pt 1):21-6; Acta Biochim Biophys Sin (Shanghai). 2014 Feb;46(2):112-8.