title: Effect of Second mitochondria-derived activator of caspase in combination with Docetaxel on lung cancer cell A549.
abstract: This study was to investigate inhibiting effect of structurally unique Second mitochondria-derived activator of caspase (Smac) in combination with Docetaxel on lung cancer cell line A549. Results showed that the expression of Smac in transfected A549 cells was higher than the control cells both at mRNA level and protein level (P<0.05). Smac over-expression induced a little apoptosis, however, when treated with Docetaxel together, the cells showed a higher apoptosis rate. The apoptosis rate was significantly increased in Smac + Docetaxel group when compared with that in Smac group and Docetaxel group (P<0.05). Cells cloning ability in Smac + Docetaxel group was worse than that of other groups (P<0.05), cell mass formed in relatively small quantities and sparse location. Thus, over-expression of Smac increases the sensitivity of lung cancer A549 cells to Docetaxel treatment, and transfection of Smac to tumor cells might provide a potential therapy modality.
authors.affiliation: Cancer Center of The Second Hospital, Shandong University Jinan, China.
authors.forename: Xiao-Mei
authors.initials: XM
authors.lastname: Li
authors.affiliation: Xinjiang Uygur Autonomous Region People's Hospital Urumqi, China.
authors.forename: Yong-Wei
authors.initials: YW
authors.lastname: Yang
authors.affiliation: Xinjiang Uygur Autonomous Region People's Hospital Urumqi, China.
authors.forename: Xiao-Kaiti
authors.initials: XK
authors.lastname: Maimaitiyiming
authors.affiliation: Xinjiang Uygur Autonomous Region People's Hospital Urumqi, China.
authors.forename: Cheng-Yu
authors.initials: CY
authors.lastname: Jin
authors.affiliation: Department of Pharmacology, The Second Hospital, Shandong University Jinan, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Zou
authors.affiliation: Cancer Center of The Second Hospital, Shandong University Jinan, China.
authors.forename: Yu-Hua
authors.initials: YH
authors.lastname: Jiang
authors.affiliation: Department of Thoracic, The Second Hospital, Shandong University Jinan, China.
authors.forename: Chuan-Liang
authors.initials: CL
authors.lastname: Peng
keywords: Docetaxel; Second mitochondria-derived activator of caspase; apoptosis; cloning ability; lung cancer