miR‑140‑3p inhibits breast cancer proliferation and migration by directly regulating the expression of tripartite motif 28

Zhou,Yu; Wang,Bo; Wang,Yu; Chen,Gaohui; Lian,Qixin; Wang,Haidong

doi:10.3892/ol.2019.10038

miR‑140‑3p inhibits breast cancer proliferation and migration by directly regulating the expression of tripartite motif 28

Authors:
- Yu Zhou
- Bo Wang
- Yu Wang
- Gaohui Chen
- Qixin Lian
- Haidong Wang
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Affiliations: Department of Oncology, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China, Department of Anorectal Surgery, First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China, Department of Oncology, Jiamusi University, Jiamusi, Heilongjiang 154007, P.R. China, Department of General Surgery, Daqing City People's Hospital, Daqing, Heilongjiang 163316, P.R. China
Published online on: February 13, 2019 https://doi.org/10.3892/ol.2019.10038
Pages: 3835-3841
Copyright: © Zhou et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to determine the expression profile and significance of microRNA‑140‑3p (miR‑140‑3p) in breast cancer (BC). miR‑140‑3p expression in BC tumor tissues and cell lines was measured by reverse transcription‑ quantitative polymerase chain reaction. Luciferase activity reporter assay and western blotting were used to assess the effect of miR‑140‑3p expression on tripartite motif 28 (TRIM28). Cell growth, migration, and invasion were assessed by Cell Counting Kit‑8 assay, wound‑healing assay and Transwell invasion assay, respectively. miR‑140‑3p expression was significantly reduced in BC tumor tissues compared with in adjacent normal tissues. Additionally, low miR‑140‑3p expression was found to predict poor prognosis of patients with BC. TRIM28 expression was significantly reduced by miR‑140‑3p overexpression in BC cell lines, and was inversely correlated with miR‑140‑3p in BC tissues. Overexpression of miR‑140‑3p also inhibited cell proliferation, migration and invasion compared with in the control group. In conclusion, the present study revealed that miR‑140‑3p inhibited the progression of BC partially by regulating TRIM28.

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