Cycloprodigiosin Hydrochloride Activates the Ras-PI3K-Akt Pathway and Suppresses Protein Synthesis Inhibition-Induced Apoptosis in PC12 Cells. Bioscience, biotechnology, and biochemistry [Biosci Biotechnol Biochem] Journal article | | Title | Cycloprodigiosin Hydrochloride Activates the Ras-PI3K-Akt Pathway and Suppresses Protein Synthesis Inhibition-Induced Apoptosis in PC12 Cells. | | Author(s) | Kawauchi K, Tobiume K, Iwashita K, Inagaki H, Morikawa T, Shibukawa Y, Moriyama Y, Hirata H, Kamata H | | Institution | Department of Molecular Oncology, Institute of Gerontology, Nippon Medical School. | | Source | Biosci Biotechnol Biochem 2008 Jun 7. | | Abstract | Cycloprodigiosin hydrochloride (cPrG-HCl), a member of the prodigiosin family of compounds, has been reported to act as an H(+)/Cl(-) symporter. This compound induces apoptosis in several cancer cells and acts as an antitumor drug in animal models. In this study, we found a novel function of cPrG-HCl; to suppress cell death in PC12 cells, which is caused by protein synthesis inhibitors cycloheximide and actinomycin D. cPrG-HCl activated Akt and suppressed apoptosis, and this was accompanied by inhibition of caspase-3 activity and DNA fragmentation independently of its H(+)/Cl(-) symporter activity. Wortmannin, a phosphatidylinositol 3-kinase (PI3K) inhibitor, and dominant-negative Ras attenuated the anti-apoptotic activity of cPrG-HCl, which indicates that cPrG-HCl activated the Ras-PI3K-Akt pathway suppressing apoptosis. On the other hand, serum-deprivation-induced apoptosis was not suppressed by cPrG-HCl. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 18540098 |
|
|
| |
Advertise on this site.
| | |
|
