Growth inhibitory effects of dihydroartemisinin on pancreatic cancer cells: involvement of cell cycle arrest and inactivation of nuclear factor-kappaB.

Journal of Cancer Research and Clinical Oncology
Hua ChenDongbo Xue

Abstract

In a recent publication, we have shown that dihydroartemisinin (DHA), a derivative of antimalaria drug artemisinin, inhibits growth of pancreatic cancer cells in vitro and in vivo mediated by its anti-proliferative and pro-apoptotic effects. As it has been shown that the apoptosis might be induced due to cell cycle arrest, and that transcriptional factor nuclear factor-kappa B (NF-kappaB) plays vital roles in the apoptosis of pancreatic cancer cells, we extend our study to investigate the effects of DHA on cell cycle progression and NF-kappaB activity in pancreatic cancer cells to further reveal the anticancer effects of DHA on pancreatic cancer. Cell cycle progression was determined by propidium iodide staining and flow cytometry. Changes in the expression of cell cycle-associated proteins were detected using Western blot analysis. Measurement of NF-kappaB activity was performed with immunoblot analyzing the nuclear protein expression of NF-kappaB/p65 and ELISA detecting the NF-kappaB DNA-binding activity. The treatment with DHA resulted in a dose-dependent G(0)/G(1) cell cycle arrest and regulated the expression of some cyclins, cdks and cdk inhibitors that involved in the G(0)/G(1) cell cycle progression such as cyclin E, cd...Continue Reading

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