期刊
MOLECULAR MEDICINE REPORTS
卷 12, 期 3, 页码 4530-4537出版社
SPANDIDOS PUBL LTD
DOI: 10.3892/mmr.2015.3897
关键词
maternally expressed gene 3; apoptosis; cell cycle; cisplatin; A549/DDP; lung cancer
Maternally expressed gene 3 (Meg3) has been shown to promote tumor progression. However, the role of Meg3 in the development of a chemoresistant phenotype of human lung cancer has remains. Reverse transcription-quantitative polymerase chain reaction analysis was used to determine the expression of Meg3. Flow cytometric analysis and MTT assay were also used to investigate the cell cycle and apoptosis. The present study detected that the expression levels of Meg3 were significantly lower in cisplatin-resistant A549/DDP lung cancer cells, compared with those in parental A549 cells. Furthermore, upregulation of Meg3 was able to re-sensitize the A549/DDP cells to cisplatin in vitro. Whereas downregulation of Meg3, by RNA interference, decreased the sensitivity of A549 cells to cisplatin. The results of the present study also demonstrated that the Meg3-mediated chemosensitivity enhancement was associated with the induction of cell-cycle arrest and increased apoptosis, through regulation of p53, beta-catenin and survivin, which is a target gene of the WNT/beta-catenin signaling pathway. In conclusion, these results suggested that Meg3 may have a crucial role in the development of cisplatin resistance in non-small cell lung cancer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据