Curcumin induces apoptosis by PTEN/PI3K/AKT pathway in EC109 cells.
- Author:
Xiu-juan LI
;
Yu-zhen LI
;
Chun-ting JIN
;
Jie FAN
;
Hai-jun LI
- Publication Type:Journal Article
- MeSH: Apoptosis; Caspase 3; metabolism; Cell Line, Tumor; Cell Proliferation; Curcumin; pharmacology; Esophageal Neoplasms; metabolism; Glycogen Synthase Kinase 3; metabolism; Glycogen Synthase Kinase 3 beta; Humans; PTEN Phosphohydrolase; metabolism; Phosphatidylinositol 3-Kinases; metabolism; Proto-Oncogene Proteins c-akt; metabolism; Signal Transduction
- From: Chinese Journal of Applied Physiology 2015;31(2):174-177
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the molecular mechanism of curcumin in human esophageal carcinoma cell line (EC109).
METHODSEC109 cells were cultivated in vitro. When 80%-90% confluence was reached, they were treated with curcumin in different concentrations (15-120 µmol/L). The effects on cell proliferation were examined by CCK-8 colorimetry. The ultrastructure of EC109 cells were detected with transmission electron microscope(TEM). The cells apoptosis was observed with laser confocal microscope(LCM) by AnnexinV-FITC/PI double staining. The proteins level of PTEN, AKT, GSK3β and Caspase 3 were tested by flow cytometry(FCM) .
RESULTSCCK-8 test showed that curcumin could inhibit the proliferation of EC109 cells in a time- and concentration-dependent manner. TEM and LCM examinations indicated that curcumin could make EC109 cells apoptosis. The data of FCM showed that curcumin could increase the expression of PTEN, GSK3β and Caspase 3, decreased the expression of AKT.
CONCLUSIONThe effects of curcumin on inhibiting proliferation and promoting apoptosis of EC109 cells were related with increased expression of PTEN and inhibition of PI3K/AKT signaling pathway.