Abstract Title:

Antiproliferative activity of paeoniflorin is through cell cycle arrest and the Fas/Fas ligand-mediated apoptotic pathway in human non-small cell lung cancer A549 cells.

Abstract Source:

Clin Exp Pharmacol Physiol. 2008 Feb ;35(2):141-7. Epub 2007 Oct 17. PMID: 17941899

Abstract Author(s):

Jen-Yu Hung, Chih-Jen Yang, Ying-Ming Tsai, Hurng-Wern Huang, Ming-Shyan Huang

Article Affiliation:

Jen-Yu Hung


1. Paeoniflorin (PF), isolated from the paeony root, is reported to have immunoregulatory, neuromuscular blocking, anticonvulsant, antihyperglycaemic and antihypotensive effects. 2. The present study investigated the antiproliferative activity of PF. The results showed that PF inhibited the proliferation of A549 by blocking cell cycle progression in the G(0)/G(1) phase and inducing apoptosis. 3. An ELISA showed that G(0)/G(1) phase arrest may be due to p53-independent induction of p21/wild-type p53-activated fragment 1 (WAF1). Increased protein expression of Fas/apoptosis-1 (APO-1) and its two ligands, membrane-bound Fas ligand and soluble Fas ligand, may be responsible for the PF-induced apoptosis. 4. This is the first study to show that the induction of p21/WAF1 and the activity of the Fas/Fas ligand apoptotic system may participate in the antiproliferative activity of PF in A549 cells.

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