Abstract:
:Breast cancer (BC) is the most prevalent malignant cancer in the world, is the leading cause of cancer-related death female. Recently, there is accumulating evidence that long noncoding RNAs (lncRNAs) might as an important role in the progression of BC. (epithelial-mesenchymal transition (EMT) is considered to play a vital role in tumor cells migration and invasion. Nevertheless, the entire biological mechanisms and functions of lncRNAs in tumor migration, invasion, and EMT remain uncertain. In the present research, we observed that the expression of lncRNA AC073284.4 was downregulated in BC paclitaxel-resistant (PR) cells (MCF-7/PR) and tissues. Bioinformatics analysis predicted that miR-18b-5p was a direct target of AC073284.4, which has been validated by dual-luciferase reporter gene assay. We further proved that AC073284.4 could directly bind to miR-18b-5p and relieve the suppression for dedicator of cytokinesis protein 4 (DOCK4). Furthermore, the underlying functional experiments demonstrated that AC073284.4 might sponge miR-18b-5p to attenuate the invasion, metastasis, and EMT of BC cell through upregulating DOCK4 expression. In summary, AC073284.4 might serve as a competing endogenous RNA (ceRNA) in BC progression via modulating miR-18b-5p/DOCK4 axis, which weakens EMT and migration of BC. These results suggesting that AC073284.4 might function as a potential novel diagnostic biomarker in the progression of BC.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Wang YY,Yan L,Yang S,Xu HN,Chen TT,Dong ZY,Chen SL,Wang WR,Yang QL,Chen CJdoi
10.1002/jcp.28887subject
Has Abstractpub_date
2019-12-01 00:00:00pages
23202-23215issue
12eissn
0021-9541issn
1097-4652journal_volume
234pub_type
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