Abstract：
:Recent studies have shown abnormal expression levels of cyclooxygenase-2 (COX-2) and miR-21b-3p in cerebral ischemia-reperfusion (I/R) rat models. Decreased COX-2 expression could reduce brain injury and thus could be a target of miR-21b-3p according to the miRNA databases (miRDB) analysis. However, its functions and underlying mechanisms in I/R injury remain unclear. In our study, we have established an oxygen/glucose deprivation and reperfusion (OGD/R) model by using NS2OY cells. The expression of miR-21b-3p and COX-2 was determined by quantitative real-time PCR or Western blot, and the fluorescence intensities were detected by fluorescence in situ hybridization (FISH) or immunofluorescence. After transfection and OGD/R treatments, the functions of miR-21b-3p and COX-2 on cell viability and apoptosis were detected using cell-counting kit 8, Edu staining, flow cytometry and Hoechst staining, respectively. Finally, dual-luciferase reporter assay was used to explore the relationship between miR-21-b-3p and COX-2. The results have showed that COX-2 mRNA and protein expression were significantly increased; however, the expression of miR-21b-3p was remarkably reduced in NS2OY cells after OGD/R treatment. The changes were most remarkable in OGD 2 h/R24 group. Function analysis has showed that when NS2OY cells were exposed to OGD/R injury, overexpressed miR-21b-3p significantly downregulated COX-2 expression, increased cell viability and decreased apoptosis. In addition, knocking down the expression of COX-2 could also increase cell viability and decrease apoptosis. Dual-luciferase reporter assays showed miR-21b-3p as the target of 3'-UTR of COX-2. Therefore, we concluded that OGD/R-induced injury by down-regulating COX-2.
journal_name
Am J Transl Resjournal_title
American journal of translational researchauthors
Wu X,Peng K,Huang H,Li Z,Xiang W,Deng W,Liu L,Li W,Zhang Tsubject
Has Abstractpub_date
2019-05-15 00:00:00pages
3007-3017issue
5issn
1943-8141journal_volume
11pub_type
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journal_title：American journal of translational research
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journal_title：American journal of translational research
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journal_title：American journal of translational research
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journal_title：American journal of translational research
pub_type： 杂志文章
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journal_title：American journal of translational research
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journal_title：American journal of translational research
pub_type： 杂志文章
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更新日期：2019-07-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
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journal_title：American journal of translational research
pub_type： 杂志文章
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journal_title：American journal of translational research
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doi：
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journal_title：American journal of translational research
pub_type： 杂志文章
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journal_title：American journal of translational research
pub_type： 杂志文章
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2018-05-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2019-03-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2016-07-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2016-03-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2012-01-01 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2020-08-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2018-10-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章,评审
doi：
更新日期：2014-10-11 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2018-12-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2012-01-01 00:00:00
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journal_title：American journal of translational research
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doi：
更新日期：2014-05-15 00:00:00
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journal_title：American journal of translational research
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doi：
更新日期：2016-10-15 00:00:00
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journal_title：American journal of translational research
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doi：
更新日期：2019-03-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2015-09-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2020-03-15 00:00:00
abstract：:Fisetin (3,7,3',4'-tetrahydroxyflavone) is a dietary flavonoid and has been indicated as a novel anti-cancer agent in several types of cancer cells. However, the mechanisms underlying the effect of fisetin in human oral squamous cell carcinoma (OSCC) remain unclear. Here, we report that fisetin significantly inhibits ...
journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2017-12-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2019-05-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2018-04-15 00:00:00
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journal_title：American journal of translational research
pub_type： 杂志文章
doi：
更新日期：2017-02-15 00:00:00
