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  • Title: [Effects of secoisolariciresinol diglucoside combined with bortezomib on induction of apoptosis in lung cancer cell line A549].
    Author: Li XW, Yang JR.
    Journal: Zhong Yao Cai; 2012 Feb; 35(2):248-53. PubMed ID: 22822672.
    Abstract:
    OBJECTIVE: To study the influence of Secoisolariciresinol Diglucoside (SDG) combined with Bortezomib on induction of apoptosis in lung cancer cell line A549 and its relative mechanisms. METHODS: The effect on proliferation was evaluated by MTT assay. The cell apoptosis was studied by flow cytometry and Hoechst 33342 staining. Colorimetric method was used to detect the activity of Caspase-3. Real time PCR was used to detect the expression of Caspase-3, BCL-2 and BAX mRNA. Western blot was used to determine the change of p-JNK, BCL-2 and BAX protein expression in A549 cells. RESULTS: The cell growth was significantly slowed down and the cell apoptosis was induced after the combined treatment. Meanwhile the Caspase-3 activity and the expression of Caspase-3 mRNA were obviously increased, the expression of BCL-2 mRNA and protein were significantly down regulated and the expression of BAX. p-JNK mRNA and protein were significantly up regulated after the combined treatment. CONCLUSION: The results demonstrate that SDG combined with Bortezomib can significantly induce apoptosis of A549 cells, its mechanisms may be involved in activation of the JNK pathway.
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