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Published in: World Journal of Surgical Oncology 1/2021

Open Access 01-12-2021 | Breast Cancer | Research

MicroRNA-638 inhibits the progression of breast cancer through targeting HOXA9 and suppressing Wnt/β-cadherin pathway

Authors: Qian Xu, Qianqian Zhang, Mengli Dong, Yuan Yu

Published in: World Journal of Surgical Oncology | Issue 1/2021

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Abstract

Background

Previous studies had shown that microRNA-638 (miR-638) exhibited different effects in malignant tumors. Moreover, the function of miR-638 has not been reported in breast cancer. Hence, we designed this research to explore the function of miR-638 in breast cancer.

Methods

Firstly, miR-638 expressions were measured in breast cancer tissues via RT-qPCR. Protein expressions were detected through immunocytochemical (IHC) assay and western blot analysis. Then, Cell Counting Kit-8 (CCK-8) assay and Transwell assay were conducted to observe proliferation and motility of the cells. Dual luciferase assay was performed to confirm the binding site between miR-638 and Homeobox protein Hox-A9 (HOXA9).

Results

Reduced expression of miR-638 was detected in breast cancer. And low miR-638 expression was related to poor prognosis in patients with breast cancer. Functionally, the viability, migration, and invasion of the breast cancer cells were suppressed by miR-638 overexpression. Furthermore, miR-638 can directly bind to HOXA9, and increased expression of HOXA9 was also detected in breast cancer. In particular, HOXA9 upregulation can impair anti-tumor effect of miR-638 in breast cancer, and miR-638 can hinder the Wnt/β-cadherin pathway and epithelial-mesenchymal transition (EMT) in breast cancer.

Conclusion

miR-638 inhibits breast cancer progression through binding to HOXA9.
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Metadata
Title
MicroRNA-638 inhibits the progression of breast cancer through targeting HOXA9 and suppressing Wnt/β-cadherin pathway
Authors
Qian Xu
Qianqian Zhang
Mengli Dong
Yuan Yu
Publication date
01-12-2021
Publisher
BioMed Central
Published in
World Journal of Surgical Oncology / Issue 1/2021
Electronic ISSN: 1477-7819
DOI
https://doi.org/10.1186/s12957-021-02363-7

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