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[Longikaurin A induces apoptosis of multiple myeloma H929 cells].
- Source :
-
Zhongguo shi yan xue ye xue za zhi [Zhongguo Shi Yan Xue Ye Xue Za Zhi] 2012 Jun; Vol. 20 (3), pp. 611-5. - Publication Year :
- 2012
-
Abstract
- The aim of this study was to investigate the biological effect of longikaurin A on multiple myeloma H929 cells. Effects of oridonin and longikaurin A on proliferation of H929 cells were evaluated by CCK-8 assay. Cell morphological features of H929 cells were examined under inverted phase contrast microscope. Apoptosis was determined by Annexin V/PI staining. Expression of caspase-3, caspase-9, and PARP were detected by Western blot. Reactive oxygen species (ROS) level was determined by DCFDA assay. The results showed that longikaurin A (IC(50) 0.85 µmol/L) was more effective than oridonin ((IC(50) 10.66 µmol/L) to inhibit the proliferation of H929 cells. Treatment with longikaurin 2 µmol/L significantly increased the percentage of Annexin V positive cells. Caspase-3 and caspase-9 were activated and PARP, one substrate of caspase-3, was cleaved into 85 kDa fragments. The ROS scavenger N-acetyl-cysteine significantly blocked apoptosis induced by longikaurin A. However, longikaurin A did not increase the ROS level in H929 cells. It is concluded that longikaurin A is more effective than oridonin to induce apoptosis in multiple myeloma H929 cells without increasing the ROS level.
Details
- Language :
- Chinese
- ISSN :
- 1009-2137
- Volume :
- 20
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Zhongguo shi yan xue ye xue za zhi
- Publication Type :
- Academic Journal
- Accession number :
- 22739166