Chang, A.J., Song, D.H. and Wolfe, M.M.
Notes: The researchers sought to determine whether PPARγ expression might direct the effects of gastrin in proliferation of colorectal cancer cells (CRC). They determined that cell line DLD-1 cells had both PPARγ and gastrin receptors. They demonstrated that gastrin stimulated CRC cell proliferation with a coincident decrease in PPARγ levels. These studies show that gastrins trophic properties could be due in part to transactivation of EGFR and phosphorylation of ERK1/2, leading to a decrease in PPARγ activation.
The authors used CellTiter 96® Aqueous One Solution Cell Proliferation Assay to measure cell growth of the CRC cell line DLD-1.
The DLD-1 cells were transiently transfected with a luciferase vector, and FuGENE® 6 Transfection Reagent was used at a DNA ratio of 3:1 in 24-well plates. To normalize for transfection efficiency, the cells were co-transfected with a β-Gal reporter construct. The Dual-Luciferase® Assay System was used to measure PPARgamma activity with values then normalized to Beta-Gal, measured with the β-Galactosidase Enzyme Assay System. (4280)