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  • Title: LncRNA MNX1-AS1 promotes the progression of cervical cancer through activating MAPK pathway.
    Author: Liu X, Yang Q, Yan J, Zhang X, Zheng M.
    Journal: J Cell Biochem; 2019 Mar; 120(3):4268-4277. PubMed ID: 30302806.
    Abstract:
    Long noncoding RNAs (lncRNAs) have been discovered as significant regulators in a wide range of human cancers. Among them, lncRNA MNX1-AS1 has been proved to be an oncogene in ovarian cancer and glioblastoma. However, the regulatory mechanism of MNX1-AS1 in cervical cancer remains to be understood. Therefore, this study planned to explore the role of MNX1-AS1 in cervical cancer. In the beginning, we found that the expression of MNX1-AS1 was obviously upregulated in cervical cancer tissues and cell lines. Kaplan-Meier survival analysis revealed that patients with higher MNX1-AS1 expression level suffered from shorter overall survival time than those with lower MNX1-AS1 level. Moreover, by loss-of-function and gain-of-function assay, the effect of MNX1-AS1 on cell proliferation and apoptosis was examined on cellular level. Results showed that the proliferation of Hela cells was significantly inhibited and apoptosis enhanced by the transfection of shMNX1-AS1, while overexpressing MNX1-AS1 in E6E7 cells presented the contrary results. As for mechanism investigation, it was demonstrated that overexpression of MNX1-AS1 significantly improved the expression of p-ERK1/2 and p-JNK. And the effects of MNX1-AS1 on cell proliferation and apoptosis would be diminished after inactivating the phosphorylation of either ERK or JNK. Taken together, it was identified that MNX1-AS1 promoted proliferation and inhibited apoptosis of cervical cancer cells through MAPK pathway.
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