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. 2006 Jun;9(6):435-43.
doi: 10.1016/j.ccr.2006.04.020.

Specific activation of microRNA-127 with downregulation of the proto-oncogene BCL6 by chromatin-modifying drugs in human cancer cells

Yoshimasa Saito  1 , Gangning Liang, Gerda Egger, Jeffrey M Friedman, Jody C Chuang, Gerhard A Coetzee, Peter A Jones
Affiliations
Free article

Specific activation of microRNA-127 with downregulation of the proto-oncogene BCL6 by chromatin-modifying drugs in human cancer cells

Yoshimasa Saito et al. Cancer Cell. 2006 Jun.
Free article

Abstract

Expression profiling of T24 cells revealed that 17 out of 313 human miRNAs were upregulated more than 3-fold by simultaneous treatment with the chromatin-modifying drugs 5-aza-2'-deoxycytidine and 4-phenylbutyric acid. One of these, miR-127, is embedded in a CpG island and is highly induced from its own promoter after treatment. miR-127 is usually expressed as part of a miRNA cluster in normal cells but not in cancer cells, suggesting that it is subject to epigenetic silencing. In addition, the proto-oncogene BCL6, a potential target of miR-127, was translationally downregulated after treatment. These results suggest that DNA demethylation and histone deacetylase inhibition can activate expression of miRNAs that may act as tumor suppressors.

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