Abstract:
Purpose:The exact mechanism regulating fibronectin (FN) expression in breast cancer cells has not been fully elucidated. In this study, we investigated the pharmacological mechanism of berberine (BBR) with respect to FN expression in triple-negative breast cancer (TNBC) cells. Methods:The clinical significance of FN mRNA expression was analyzed using the Kaplan-Meier plotter database (http://kmplot.com/breast). FN mRNA and protein expression levels were analyzed by real-time polymerase chain reaction and western blotting, respectively. Results:Using publicly available clinical data, we observed that high FN expression was associated with poor prognosis in patients with breast cancer. FN mRNA and protein expression was increased in TNBC cells compared with non-TNBC cells. As expected, recombinant human FN significantly induced cell spreading and adhesion in MDA-MB231 TNBC cells. We also investigated the regulatory mechanism underlying FN expression. Basal levels of FN mRNA and protein expression were downregulated by a specific activator protein-1 (AP-1) inhibitor, SR11302. Interestingly, FN expression in TNBC cells was dose-dependently decreased by BBR treatment. The level of c-Jun phosphorylation was also decreased by BBR treatment. Conclusion:Our findings demonstrate that FN expression is regulated via an AP-1-dependent mechanism, and that BBR suppresses FN expression in TNBC cells through inhibition of AP-1 activity.
journal_name
J Breast Cancerjournal_title
Journal of breast cancerauthors
Jeong Y,You D,Kang HG,Yu J,Kim SW,Nam SJ,Lee JE,Kim Sdoi
10.4048/jbc.2018.21.1.21subject
Has Abstractpub_date
2018-03-01 00:00:00pages
21-27issue
1eissn
1738-6756issn
2092-9900journal_volume
21pub_type
杂志文章abstract:PURPOSE:MicroRNAs (miRNAs) are a major class of small endogenous RNA molecules that posttranscriptionally regulate the expression of most genes in the human genome. miRNAs are often located in chromosomal fragile sites, which are suscept-ible to amplification or deletion. Chromosomal deletions are frequent events in br...
journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2016.19.2.148
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abstract::On a pathological specimen of breast cancer cells, retraction artifact during histological processing mimics true lymphovascular invasion (LVI). The accurate determination of the presence or absence of LVI is a factor in determining risk of having a positive sentinel node, or having additional positive axillary nodes ...
journal_title:Journal of breast cancer
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journal_title:Journal of breast cancer
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更新日期:2017-06-01 00:00:00
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journal_title:Journal of breast cancer
pub_type: 杂志文章,评审
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journal_title:Journal of breast cancer
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abstract::The combination of luteinizing hormone-releasing hormone analogs (LHRHa) with tamoxifen is used as a standard postoperative adjuvant therapy in patients with hormone receptor-positive/premenopausal breast cancer. Long-acting LHRHa formulations offer advantages in terms of patient convenience. However, data on the effe...
journal_title:Journal of breast cancer
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journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2019.22.e11
更新日期:2019-02-15 00:00:00
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journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2020.23.e61
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2013.16.3.308
更新日期:2013-09-01 00:00:00
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journal_title:Journal of breast cancer
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doi:10.4048/jbc.2020.23.e44
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journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2013.16.4.386
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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更新日期:2015-06-01 00:00:00
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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journal_title:Journal of breast cancer
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journal_title:Journal of breast cancer
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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journal_title:Journal of breast cancer
pub_type: 杂志文章
doi:10.4048/jbc.2012.15.4.412
更新日期:2012-12-01 00:00:00
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journal_title:Journal of breast cancer
pub_type:
doi:10.4048/jbc.2018.21.1.96
更新日期:2018-03-01 00:00:00
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journal_title:Journal of breast cancer
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pub_type: 杂志文章
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更新日期:2012-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
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journal_title:Journal of breast cancer
pub_type: 杂志文章
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更新日期:2016-12-01 00:00:00