The mechanism of apoptosis of TE-13 cells induced by ethanol extract of Forsythia suspensa root in vitro
10.3781/j.issn.1000-7431.2013.03.006
- Author:
Xi YAN
1
Author Information
1. Research Center
- Publication Type:Journal Article
- Keywords:
Apoptosis;
Esophageal neoplasms;
Forsythia;
Plant extract;
TE-13 cells
- From:
Tumor
2013;33(3):239-244
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the probable mechanism of FSEER (ethanol extract of Forsythia suspensa root)-induced apoptosis of esophageal cancer TE-13 cells in vitro . Methods: Change of mitochondrial membrane potential in TE-13 celsl after treatment with different concentrations of FSEER (0.4, 0.5 and 0.6 mg/mL) for 24 h was examined by FCM (flow cytometry). The expressions of apoptosisassociated proteins [cleaved caspase-3, caspase-8, cleaved caspase-9 and Cyt-C (cytochrome-C)] in esophageal cancer cells after FSEER treatment were detected by Western blotting. The expression levels of Bax, Bad, Noxa, Bcl-2, Bcl-xl and Mcl-1 mRNAs in TE-13 cells after treatment with different concentrations of FSEER for 24 h were detected by RT (reverse transcription)-PCR. Results: FSEER (0.4, 0.5 and 0.6 mg/mL for 24 h) can significantly reduce the mitochondrial membrane potential of TE-13 cells in a dose-dependent manner, as compared with the TE-13 cells without any treatment (P < 0.05). The result of Western blotting showed that the expression levels of cleaved caspase-3, cleaved-caspase-9 and Cyt-C in TE-13 cells after FSEER treatment were significantly increased but the expression level of caspase-8 had no change as compared with those of the TE-13 cells without any treatment (P < 0.05). RT-PCR showed that FSEER could up-regulate the expression levels of Bax, Bad and Noxa mRNAs and down-regulate the expression levels of Bcl-2, Bcl-xl and Mcl-1 mRNAs. Conclusion: The underlying mechanism of FSEER-induced apoptosis of TE-13 cells may be related to the mitochondria-dependent pathway. Copyright © 2013 by TUMOR.
