Abstract:
:Liver cancer, particularly hepatocellular carcinoma (HCC), is one of leading causes of cancer-related mortality worldwide. Upregulation of the evolutionary conserved Hippo signaling pathway has been observed in HCC patients, and Yes-associated protein 1 (YAP1) has been reported to play a key role in HCC tumorigenesis. microRNAs (miRNAs) are a family of small non-coding RNAs, usually 21-25 nucleotides in length, and are essential in the regulation of gene expression. Abnormal miRNA expression has been implicated in the initiation and progression of numerous forms of cancers, including liver cancer. Here, we report the identification of a novel miRNA, miR-186, and its functions as an HCC tumor suppressor. We observed that miR-186 was downregulated in several HCC cell lines, and that it directly targets YAP1 mRNA. Overexpression of miR-186 in HCC cells significantly downregulates YAP1 mRNA and protein levels, leading to downregulation of the Hippo signaling pathway, which in turn severely inhibits HCC cell migration, invasion and proliferation. Our study is the first to report the direct involvement of miR-186 in downregulating YAP1 and, more significantly, inhibiting HCC tumorigenesis, and supports the role miR-186 as a potential therapeutic target in treating liver cancer.
journal_name
Oncol Lettjournal_title
Oncology lettersauthors
Ruan T,He X,Yu J,Hang Zdoi
10.3892/ol.2016.4312subject
Has Abstractpub_date
2016-04-01 00:00:00pages
2941-2945issue
4eissn
1792-1074issn
1792-1082pii
OL-0-0-4312journal_volume
11pub_type
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