Add time:08/06/2019         Source:sciencedirect.com

4-Demethyl-picropodophyllotoxin 7′-O-β-d-glucopyranoside (4DPG), a new Podophyllotoxin glucoside (cas 16481-54-2), was isolated from the rhizomes of Sinopodophyllum emodi (Wall.) Ying and showed cytotoxic effects in human carcinoma cells. Among the target cells (HeLa, A2 and SH-SY5Y), the cytotoxic effects of 4DPG showed dose- and time-dependency. Furthermore, the cervical carcinoma cell line, HeLa, was more sensitive to 4DPG. Flow cytometric analysis demonstrated the presence of apoptotic cells with low DNA content, a decrease of cell population at the G1 phase, and a concomitant increase of cell population at the G2/M phase. 4DPG also caused DNA fragmentation in HeLa cells. Treatment with 0.1 μM 4DPG increased p53 expression and Bax/Bcl-2 ratio in HeLa cells, as well as in A2 cells. These results suggested that 4DPG-induced apoptosis might be through a p53-dependent pathway.

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