Title : Butyrate inhibits pro-proliferative miR-92a by diminishing c-Myc-induced miR-17-92a cluster transcription in human colon cancer cells.

Pub. Date : 2015 Oct 13

PMID : 26463716






7 Functional Relationships(s)
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1 Butyrate inhibits pro-proliferative miR-92a by diminishing c-Myc-induced miR-17-92a cluster transcription in human colon cancer cells. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
2 The effects of butyrate, SAHA and valproic acid on protein levels of c-Myc, Drosha and p57 were measured in HCT-116 cells using immunoblotting. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
3 Regulation of C13orf25 promoter activity by butyrate was analyzed by luciferase reporter assay using modified pGL3 constructs containing a wild-type or mutated c-Myc binding site. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
4 Treating human colon cancer cells with butyrate reduced the levels of pri-miR17-92a, precursor and mature miR-92a, as well as c-Myc. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
5 Mutation of the c-Myc binding site diminished butyrate"s inhibitory effects on C13orf25 promoter activity. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
6 c-Myc over-expression neutralized butyrate-induced attenuation of pri-miR17-92a. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens
7 CONCLUSIONS: Our findings identify a novel cellular mechanism whereby butyrate inhibits miR-92a transcription by reducing c-Myc, thus augmenting p57 levels. Butyrates MYC proto-oncogene, bHLH transcription factor Homo sapiens