Dendroflorin retards the senescence of MRC-5 cells.

The influence of dendroflorin, a potentially active compound extracted from Dendrobium nobile, on cell growth and cell cycles was assessed in a human embryo lung fibroblastic MRC-5 cell line. An MTT assay indicated that dendroflorin benefits cell proliferation. Additionally, we used flow cytometry to examine the cell cycles in senescent MRC-5 cells after treatment with dendroflorin, discovering that dendroflorin could trigger cells in the G1 phase to enter the S phase. Further examination of intracellular ROS contents using DCFH-DA suggested that dendroflorin helps ROS degradation, partly elucidating the mechanism of its effects. All of the above results suggest that dendroflorin is a potential candidate with anti-senescence activity.