Title: Inhibition of oridonin in HepG-2 cells proliferation
Abstract:Objective To investigate the proapoptotic effect and the underlying mechanism of oridonin in human hepatocarcinoma(HepG-2) cells. Methods MTT assay was used to measure the cell viability. Apoptosis wa...Objective To investigate the proapoptotic effect and the underlying mechanism of oridonin in human hepatocarcinoma(HepG-2) cells. Methods MTT assay was used to measure the cell viability. Apoptosis was determined by flow cytometry analysis after Annexin V/PI staining and fluorescence microscope after Hoechst staining. The expression of MAPK signaling pathway proteins was determined by immunoblot analysis. Results Treatment with oridonin for 24 h resulted in a marked decrease in cell viability of HepG-2 cells in a dosedependent manner. The IC50values were determined as 38. 41 μmol/L for 24 h. After treatment with 20,40 and 60 μmol/L oridonin for 24 h,apoptotic rates of HepG-2 cells increased by flow cytometry analysis and typical apoptotic nucleus alterations were observed with fluorescence microscope. Treatment with 20,40 and 60 μmol/L oridonin down-regulated protein expression of Bcl-2,caspase-9,caspase-3 and increased the expression of pJNK,p-p38,p-p53 as well as activated the cleavage of caspase-9. Conclusion Oridonin may induce the apoptosis of HepG-2 cells through MAPK pathway.Read More
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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