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Curcumin induces FasL-related apoptosis through p38 activation in human hepatocellular carcinoma Huh7 cells
- Source :
-
Life Sciences . Mar2013, Vol. 92 Issue 6/7, p352-358. 7p. - Publication Year :
- 2013
-
Abstract
- Abstract: Aim: The aim of this study is to explore the underlying molecular mechanism of curcumin-induced apoptosis in human hepatocellular carcinoma (HCC) Huh7 cells. Main methods: Fas and FasL mRNA expression was analyzed by reverse transcription PCR. Western blot was applied to detect the protein expression of Bcl-2 family members, MAPK family members, c-Jun, c-Fos, ATF-2, caspase-3, PARP, TNF receptor family members and the respective ligands. Apoptotic cells were assayed with annexin V/PI double staining and flow cytometry. Key findings: Curcumin treatment resulted in a fast and significant increase of Fas and Fas ligand (FasL) along with activation of caspase-3 and cleavage of PARP in Huh7 cells. Inhibition of caspase-3 activity by the specific inhibitor Z-DEVD-FMK rescued Huh7 cells from curcumin-induced apoptosis. Neutralization of FasL significantly protected the cells from curcumin-induced caspase-3 activation and apoptosis in a dose-dependent manner. Moreover, p38 was rapidly activated in response to curcumin, and inactivation of p38 by pharmacologic inhibitor SB203580 dramatically suppressed curcumin-induced FasL expression and apoptosis. Significance: Our results demonstrated that curcumin induces apoptosis through p38-denpendent up-regulation of FasL in Huh7 cells. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00243205
- Volume :
- 92
- Issue :
- 6/7
- Database :
- Academic Search Index
- Journal :
- Life Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 85585447
- Full Text :
- https://doi.org/10.1016/j.lfs.2013.01.013