Upregulation of microRNA-200a associates with tumor proliferation, CSCs phenotype and chemosensitivity in ovarian cancer

In: NEOPLASMA, vol. 62, no. 4

N. Liu - L. Zhong - J. Zeng - X. Zhang - Q. Yang - D. Liao - Y. Wang - G. Chen

Detaily:

Rok, strany: 2015, 550 - 559

O článku:

Ovarian cancer is a lethal gynecologic malignancy and always has a poor prognosis. Despite new treatments modalities, the long term outcomes had not been significantly improved in the past 30 years. Although microRNA-200a (miR-200a) has been reported to be a prognostic marker in ovarian cancer, it’s exact role in ovarian cancer remain unclear. In this study, we inserted the response element of miR-200a in ovarian cancer cell line via lentivirus-mediated transgene in vitro, and qRT-PCR (real time quantitative reverse transcription PCR) assay confirmed that miR-200a was up regulated compared with control. Then colony-formation assay, cell cycle analysis, CCK8 assays in vitro and xenograft experiments in vivo were performed and verified that miR-200a promoted proliferation, while blocked the formation of tumor spheroids and reduced the ratio of SP (side population) cells in ovarian cancer. Finally, we invalidated that miR-200a significantly enhanced the chemosensitivity of paclitaxel but not cisplatin in both adherent culture and sphere culture. Taken together, we demonstrated that upregulation miR-200a promoted proliferation and inhibited CSCs phenotype in OVCAR-3 ovarian cancer cell line, combined with cell cycle-targeting drug paclitaxel could effectively eliminate the “side effects” of proliferation, and showed evidences that this strategy may be promising for ovarian cancer treatment. Keywords: microRNA, ovarian cancer, proliferation, cancer stem cells, chemosensitivity

Ako citovať:

ISO 690:

Liu, N., Zhong, L., Zeng, J., Zhang, X., Yang, Q., Liao, D., Wang, Y., Chen, G. 2015. Upregulation of microRNA-200a associates with tumor proliferation, CSCs phenotype and chemosensitivity in ovarian cancer. In NEOPLASMA, vol. 62, no.4, pp. 550-559. 0028-2685.

APA:

Liu, N., Zhong, L., Zeng, J., Zhang, X., Yang, Q., Liao, D., Wang, Y., Chen, G. (2015). Upregulation of microRNA-200a associates with tumor proliferation, CSCs phenotype and chemosensitivity in ovarian cancer. NEOPLASMA, 62(4), 550-559. 0028-2685.