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Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase
Triptolide, an extract of Tripterygium wilfordii, has been shown to have a potent anticancer activity. In the present study, it was found that triptolide could effectively induce apoptosis and inhibit proliferation and invasion in malignant MDA-MB-231 breast cancer cells. The study focused on its ef...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Cognizant Communication Corporation
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7848294/ https://www.ncbi.nlm.nih.gov/pubmed/31072418 http://dx.doi.org/10.3727/096504019X15560124931900 |
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author | Liu, Qin Wang, Wei Li, Fangqiong Yu, Dongyang Xu, Chunfen Hu, Hongbing |
author_facet | Liu, Qin Wang, Wei Li, Fangqiong Yu, Dongyang Xu, Chunfen Hu, Hongbing |
author_sort | Liu, Qin |
collection | PubMed |
description | Triptolide, an extract of Tripterygium wilfordii, has been shown to have a potent anticancer activity. In the present study, it was found that triptolide could effectively induce apoptosis and inhibit proliferation and invasion in malignant MDA-MB-231 breast cancer cells. The study focused on its effect on inhibiting invasion, which has not been extensively reported to date. We predicted that triptolide may change invasion activity via microRNAs (miRNAs), which have been recognized as important regulators of gene expression. miRNAome variation in MDA-MB-231 cells with or without triptolide treatment demonstrated that miR-146a was upregulated following treatment with triptolide. Our previous studies have shown that miR-146a can inhibit migration and invasion by targeting RhoA in breast cancer. This time, we found that miR-146a can target Rac1, another key member of the Rho GTPase family. Luciferase reporter containing Rac1 3′-UTR was constructed to prove this hypothesis. In addition, following treatment with triptolide, the expression of RhoA and Rac1 was found to be decreased. These results indicated that triptolide exerts its anti-invasion activity through a miRNA-mediated mechanism, which indirectly regulates the expression of Rho GTPase. Triptolide combined with miR-146a could improve the effect of triptolide treatment on breast cancer. |
format | Online Article Text |
id | pubmed-7848294 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Cognizant Communication Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-78482942021-02-16 Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase Liu, Qin Wang, Wei Li, Fangqiong Yu, Dongyang Xu, Chunfen Hu, Hongbing Oncol Res Article Triptolide, an extract of Tripterygium wilfordii, has been shown to have a potent anticancer activity. In the present study, it was found that triptolide could effectively induce apoptosis and inhibit proliferation and invasion in malignant MDA-MB-231 breast cancer cells. The study focused on its effect on inhibiting invasion, which has not been extensively reported to date. We predicted that triptolide may change invasion activity via microRNAs (miRNAs), which have been recognized as important regulators of gene expression. miRNAome variation in MDA-MB-231 cells with or without triptolide treatment demonstrated that miR-146a was upregulated following treatment with triptolide. Our previous studies have shown that miR-146a can inhibit migration and invasion by targeting RhoA in breast cancer. This time, we found that miR-146a can target Rac1, another key member of the Rho GTPase family. Luciferase reporter containing Rac1 3′-UTR was constructed to prove this hypothesis. In addition, following treatment with triptolide, the expression of RhoA and Rac1 was found to be decreased. These results indicated that triptolide exerts its anti-invasion activity through a miRNA-mediated mechanism, which indirectly regulates the expression of Rho GTPase. Triptolide combined with miR-146a could improve the effect of triptolide treatment on breast cancer. Cognizant Communication Corporation 2019-09-23 /pmc/articles/PMC7848294/ /pubmed/31072418 http://dx.doi.org/10.3727/096504019X15560124931900 Text en Copyright © 2019 Cognizant, LLC. http://creativecommons.org/licenses/by-nc-nd/4.0/ This article is licensed under a Creative Commons Attribution-NonCommercial NoDerivatives 4.0 International License. |
spellingShingle | Article Liu, Qin Wang, Wei Li, Fangqiong Yu, Dongyang Xu, Chunfen Hu, Hongbing Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title | Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title_full | Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title_fullStr | Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title_full_unstemmed | Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title_short | Triptolide Inhibits Breast Cancer Cell Metastasis Through Inducing the Expression of miR-146a, a Negative Regulator of Rho GTPase |
title_sort | triptolide inhibits breast cancer cell metastasis through inducing the expression of mir-146a, a negative regulator of rho gtpase |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7848294/ https://www.ncbi.nlm.nih.gov/pubmed/31072418 http://dx.doi.org/10.3727/096504019X15560124931900 |
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