OncoTargets and Therapy (Feb 2021)

LncRNA MCTP1-AS1 Regulates EMT Process in Endometrial Cancer by Targeting the miR-650/SMAD7 Axis

  • Gao Q,
  • Huang Q,
  • Li F,
  • Luo F

Journal volume & issue
Vol. Volume 14
pp. 751 – 761

Abstract

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Qin Gao,* Qin Huang,* Fangbing Li, Fang Luo Obstetrics and Gynecology of Pu Ren Hospital in Wuhan, Wuhan, 430081, People’s Republic of China*These authors contributed equally to this workCorrespondence: Fang Luo Tel +86-13507157935Email [email protected]: Long noncoding RNAs (lncRNAs) play critical roles in the pathogenesis of several diseases, especially some kinds of cancer. This study aimed to investigate the expression of MTCP1-AS1 and its effects on endometrial cancer (EC).Methods: MTCP1-AS1 expression level was determined in human EC tissues and cell lines by qRT-PCR. The role of MTCP1-AS1 on EC cell proliferation, migration, invasion and epithelial to mesenchymal transition (EMT) was detected by CCK8, wound-healing assay, transwell assay and Western blot, respectively. Moreover, luciferase reporter assay and RNA-binding protein immunoprecipitation (RIP) assay were performed to verify the targeting relationship between miR-650, MCTP1-AS1 and SMAD7 in EC cells.Results: Our data showed that MCTP1-AS1 expression was downregulated in EC tissues and cell lines. Overexpression of MCTP1-AS1 inhibited cell proliferation, migration, invasion and EMT process of EC cells. Moreover, MCTP1-AS1 was proved to be the target of miR-650 and reversely correlated with its expression. In addition, MCTP1-AS1 reversed the effect of miR-650 on the EC cells, which might be associated with the role of SMAD7. Moreover, Western blot showed siRNA-SMAD7 transfection could rescue the repressed TGF-β/SMAD pathway induced by MCTP1-AS1 in EC cells.Conclusion: Taken together, these data suggested that lncRNA MCTP1-AS1 inhibited cell proliferation, migration, invasion and EMT process of EC cells via targeting the miR-650/SMAD7 axis and it has the potential to be explored as a therapeutic target for the treatment of EC in the future.Keywords: endometrial cancer, EC, lncRNAs, MCTP1-AS1, miR-650, SMAD7, EMT

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