Abstract:
:Accumulating evidences indicate that microRNAs (miRNAs) play vital roles in multiple diseases, including cancer. In the present study, we showed that miR-6775-3p plays a tumor suppressive role in esophageal squamous cell carcinoma (ESCC). High expression miR-6775-3p is associated with good clinical outcomes of ESCC patients. Over-expression of miR-6775-3p inhibited tumor growth and liver metastasis of ESCC xenograft tumors. Enforced expression of miR-6775-3p inhibited ESCC cell proliferation, migration, and invasion. KEGG pathway analysis revealed that miR-6775-3p was associated with the genes on "pathway in cancer". Mechanically, miR-6775-3p inhibited the expression of tumor antigens MAGE-A family through direct binding the 3'UTR region of MAGE-A mRNAs, and attenuated MAGE-A-inhibited transcriptional activity of tumor suppressor p53. In addition, miR-6775-3p also directly inhibits its host gene SLC7A5 which has been reported to play oncogenic roles in cancer progression. Interestingly, miR-6775-3p and its host gene SLC7A5 were directly transcriptionally induced by p53. Thus, for the first time, our study proposed a novel positive feedback regulation between miR-6775-3p and p53 via MAGE-A family, which plays crucial role in ESCC progression.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Meng L,Liu F,Ju Y,Ding P,Liu S,Chang S,Liu S,Zhang Y,Lian Y,Gu L,Zhang X,Sang Mdoi
10.1038/s41419-018-1119-3subject
Has Abstractpub_date
2018-10-17 00:00:00pages
1057issue
11issn
2041-4889pii
10.1038/s41419-018-1119-3journal_volume
9pub_type
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