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  • Title: Allyl-isatin suppresses cell viability, induces cell cycle arrest, and promotes cell apoptosis in hepatocellular carcinoma HepG2 cells.
    Author: Bian W, An Y, Qu H, Yang Y, Yang J, Xu Y.
    Journal: Fundam Clin Pharmacol; 2016 Jun; 30(3):253-62. PubMed ID: 26945926.
    Abstract:
    The anticancer effect of the newly synthesized isatin derivative, N-allyl-isatin (Allyl-I), was evaluated in vitro with human hepatocellular carcinoma HepG2 cells. Cell viability was detected by cell counting kit-8 (CCK8) assay. Acridine orange (AO)/ethidium bromide (EB) double staining was used to observe the cell morphology. Flow cytometry was used to assess the effects of Allyl-I on the cell cycle, apoptosis rate, and mitochondrial membrane potential (MMP). Western blot analysis was performed to detect the influence of Ally1-I on the expression of cytochrome c (cyt c), Bax, Bcl-2, and cleaved caspase-3. Allyl-I significantly inhibited HepG2 cell viability in a time- and dose-dependent manner. Allyl-I can induce cell cycle arrest in HepG2 cells at the G2/M phase. Apoptotic nuclear morphological changes were observed after AO/EB double staining. Fluorescein isothiocyanate-conjugated Annexin V (Annexin V-FITC) and propidium iodide (PI) double staining showed that the apoptotic rates significantly increased in the presence of Allyl-I. Rhodamine 123 staining indicated that Allyl-I can decrease the MMP. Allyl-I also altered the expression of mitochondrial apoptosis-related proteins. Protein levels of cyt c and cleaved caspase-3 were upregulated following Allyl-I treatment. By contrast, the Bcl-2/Bax ratio decreased. Results suggest that Allyl-I suppresses cell viability, induces cell cycle arrest, and promotes cell apoptosis in HepG2 cells. Furthermore, the induction of apoptosis might be correlated with the mitochondrial pathway.
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