Release of nucleophosmin from the nucleus: Involvement in aloe-emodin–induced human lung non small carcinoma cell apoptosis

✍ Scribed by Hong-Zin Lee; Chun-Hsiung Wu; Shen-Peng Chang

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: French
• Weight: 231 KB
• Volume: 113
• Category: Article
• ISSN: 0020-7136
• DOI: 10.1002/ijc.20676

✦ Synopsis

Aloe-emodin (1,8-dihydroxy-3-(hydroxymethyl)-anthraquinone) is one of the active constituents from the root and rhizome of Rheum palmatum. Our previous study has demonstrated that aloe-emodin induced a significant change in the expression of lung cancer cell apoptosis-related proteins compared to those of control cells. However, the molecular mechanisms underlying the biological effects of aloe-emodin still remain unknown. Based on these reasons, we were interested in the change of aloe-emodin-induced total protein expression by the proteomics technique during aloe-emodin-induced lung cancer cell apoptosis. Our study applied 2D electrophoresis to analyze the proteins involved in aloe-emodin-induced apoptosis in H460 cells. We found that the release of nucleophosmin from the nucleus to the cytosol and the degradation of nucleophosmin were associated with aloe-emodin-induced H460 cell apoptosis. Our study also demonstrated that the gene expression of nucleophosmin remained unchanged after treatment with aloeemodin. The aloe-emodin-caused increase in the amount of proform and fragment of nucleophosmin in cytoplasm may be one of the important events for aloe-emodin-induced H460 cell apoptosis.