MiR-29a-5p inhibits proliferation and invasion and induces apoptosis in endometrial carcinoma via targeting TPX2
| Autor: | Tiechao, Jiang, Dongming, Sui, Dong, You, Songmei, Yao, Lirong, Zhang, Yingjian, Wang, Jixue, Zhao, Yaozhong, Zhang |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Mice
Inbred BALB C Base Sequence Down-Regulation Mice Nude Nuclear Proteins Apoptosis Cell Cycle Proteins Middle Aged Prognosis Endometrial Neoplasms Retraction Gene Expression Regulation Neoplastic MicroRNAs Cell Line Tumor Animals Humans Female Neoplasm Invasiveness Microtubule-Associated Proteins Cell Proliferation Research Paper |
| Zdroj: | Cell Cycle |
| Popis: | This study was aimed to explore the effects of miR-29a-5p expression and its target gene TPX2 (target protein for Xenopus kinesin-like protein 2) on endometrial cancer (EC) devel on EC development and to assess the prognostic impacts of TPX2. Microarray-based GEO and TCGA (the Cancer Genome Atlas) EC expression data were used to identify differentially expressed miRNAs and mRNAs. The observed potential target relationship between miR-29a-5p and TPX2 was verified using TargetScan and luciferase reporter assays. The mRNA and protein expression levels of miR-29a-5p and TPX2 were confirmed by qRT-PCR and western blot, respectively. Associations between TPX2 expression and patient prognosis were assessed using Kaplan-Meier and log-rank assays. Changes in EC-derived cell proliferation, invasion and apoptosis after exogenous miR-29a-5p and TPX2 over-expression and/or silencing were assessed using CCK-8 (cell counting kit-8), colony formation, Transwell and flow cytometry assays, respectively. We found that in primary EC tissues the expression of miR-29a-5p was down-regulated and the expression of TPX2 was up-regulated. We also found that low expression of TPX2 were associated with a better prognosis, and vice versa. Subsequent exogenous miR-29a-5p over-expression and TPX2 silencing could inhibit EC-derived cell proliferation and invasion, and to induce apoptosis. We also found that miR-29a-5p might target and repress TPX2, thereby inhibiting EC-derived cell proliferation and invasion and enhancing apoptosis. We conclude that miR-29a-5p could inhibit the proliferation and invasion of EC-derived cells and enhance the apoptosis of EC-derived cells via TPX2 down-regulation. A high TPX2 expression in primary EC tissues was found to be associated with a poor prognosis. As such, these biomarkers may serve as promising prognostic indicators. ABBREVIATIONS: EC: Endometrial cancer; 3ʹ-UTR: 3ʹ-untranslated regions; TPX2: target protein for Xenopus kinesin-like protein 2; TCGA: the Cancer Genome Atlas; UCEC: uterine corpus endometrial carcinoma; CCK-8: cell counting kit-8; OD: optical density; FCM: flow cytometry; EMT: epithelial-mesenchymal transition |
| Databáze: | OpenAIRE |
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