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Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells
MicroRNAs (miRNAs), as key negative regulators of gene expression, are closely related to tumor occurrence and progression. miR-194-5p (miR-194-1) has been shown to play a regulatory role in various cancers however, its biological function and mechanism of action in breast cancer have not yet been w...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8745262/ https://www.ncbi.nlm.nih.gov/pubmed/35008751 http://dx.doi.org/10.3390/ijms23010325 |
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author | Yen, Yu-Ting Yang, Jou-Chun Chang, Jiun-Bo Tsai, Shih-Chang |
author_facet | Yen, Yu-Ting Yang, Jou-Chun Chang, Jiun-Bo Tsai, Shih-Chang |
author_sort | Yen, Yu-Ting |
collection | PubMed |
description | MicroRNAs (miRNAs), as key negative regulators of gene expression, are closely related to tumor occurrence and progression. miR-194-5p (miR-194-1) has been shown to play a regulatory role in various cancers however, its biological function and mechanism of action in breast cancer have not yet been well explored. In this study, we use the UALCAN and LinkedOmics databases to analyze transcription expression in The Cancer Genome Atlas Breast Invasive Carcinoma (TCGA-BRCA). The epithelial-mesenchymal transition status of breast cancer cells was evaluated by wound-healing assay, trans-well assays, and gelatin zymography, while protein expression was assessed by Western blotting. miR-194-5p expression was found to be up-regulated in breast cancer clinical specimens but down-regulated in the triple-negative breast cancer (TNBC) cell line MDA-MB-231 and breast cancer clinical specimens in The Cancer Genome Atlas (TCGA). miR-194-5p significantly inhibited the expression of the epithelial marker ZO-1 and increased the expression of mesenchymal markers, including ZEB-1 and vimentin, in MDA-MB-231 cells. miR-194-5p significantly reduced the gelatin-degrading activity of matrix metalloproteinase-2 (MMP-2) and MMP-9 in zymography assays. In MDA-MB-231 cells and TCGA patient samples, ZEB-1 expression was significantly inversely correlated with miR-194-5p expression. High levels of miR-194-5p were associated with good overall survival. miR-194-5p regulates epithelial–mesenchymal transition (EMT) in TNBC. Our findings suggest that miR-194-5p functions as a tumor biomarker in breast cancer, providing new insights for the study of breast cancer development and metastasis. |
format | Online Article Text |
id | pubmed-8745262 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87452622022-01-11 Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells Yen, Yu-Ting Yang, Jou-Chun Chang, Jiun-Bo Tsai, Shih-Chang Int J Mol Sci Article MicroRNAs (miRNAs), as key negative regulators of gene expression, are closely related to tumor occurrence and progression. miR-194-5p (miR-194-1) has been shown to play a regulatory role in various cancers however, its biological function and mechanism of action in breast cancer have not yet been well explored. In this study, we use the UALCAN and LinkedOmics databases to analyze transcription expression in The Cancer Genome Atlas Breast Invasive Carcinoma (TCGA-BRCA). The epithelial-mesenchymal transition status of breast cancer cells was evaluated by wound-healing assay, trans-well assays, and gelatin zymography, while protein expression was assessed by Western blotting. miR-194-5p expression was found to be up-regulated in breast cancer clinical specimens but down-regulated in the triple-negative breast cancer (TNBC) cell line MDA-MB-231 and breast cancer clinical specimens in The Cancer Genome Atlas (TCGA). miR-194-5p significantly inhibited the expression of the epithelial marker ZO-1 and increased the expression of mesenchymal markers, including ZEB-1 and vimentin, in MDA-MB-231 cells. miR-194-5p significantly reduced the gelatin-degrading activity of matrix metalloproteinase-2 (MMP-2) and MMP-9 in zymography assays. In MDA-MB-231 cells and TCGA patient samples, ZEB-1 expression was significantly inversely correlated with miR-194-5p expression. High levels of miR-194-5p were associated with good overall survival. miR-194-5p regulates epithelial–mesenchymal transition (EMT) in TNBC. Our findings suggest that miR-194-5p functions as a tumor biomarker in breast cancer, providing new insights for the study of breast cancer development and metastasis. MDPI 2021-12-28 /pmc/articles/PMC8745262/ /pubmed/35008751 http://dx.doi.org/10.3390/ijms23010325 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yen, Yu-Ting Yang, Jou-Chun Chang, Jiun-Bo Tsai, Shih-Chang Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title | Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title_full | Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title_fullStr | Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title_full_unstemmed | Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title_short | Down-Regulation of miR-194-5p for Predicting Metastasis in Breast Cancer Cells |
title_sort | down-regulation of mir-194-5p for predicting metastasis in breast cancer cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8745262/ https://www.ncbi.nlm.nih.gov/pubmed/35008751 http://dx.doi.org/10.3390/ijms23010325 |
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