Effect of Dexamethasone at Different Concentrations on OS-732 Cell Apoptosis and Cell Cycle / 广州中医药大学学报

ABSTRACT

Objective To observe the effect of glucocorticoid on osteoblast-like cell apoptosis and the cell cycle. Methods Osteoblast-like cells OS-732 at the density of 1?105/mL were cultured in vitro with dexamethasone (DMX) at the concentrations of 10-7,10-8 and 10-9 mmol/L. The apoptosis of OS-732 was detected by flow cytometry after the culturing for 24 and 48 hours,and then DNA content was detected and the cell cycle was analysed. Results At the time point of the 24th hour,DNA content at G2/M phase of OS-732 cell cycle was increased obviously in DMX1(10-7 mmol/L)group (P