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MiR-27 miR-27 is a family of microRNA precursors found in animals, including humans. MicroRNAs are typically transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give a ~22 nucleotide product. The excised region or, mature product, of the miR-27 precursor is the microRNA mir-27. ''Herpesvirus saimiri'' expresses several non-coding RNAs (HSURs) which have been found to significantly reduce the level of mir-27 in a host cell. It has been proposed that miR-27 operates together with miR-23 and mir-24 in a co-operative cluster. ==Regulation of adipocyte differentiation== miR-27 is one of a number of microRNAs implicated in cholesterol homeostasis and fatty acid metabolism. The miR-27 gene family has been shown to be downregulated during the differentiation of adipocytes. miR-27 overexpression inhibits adipocyte formation when overexpressed, acting by blocking the expression of two main regulators of adipogenesis. MicroRNAs miR-27a and -27b have been found to negatively regulate adipocyte differentiation through regulation of the peroxisome proliferator-activated receptor gamma (PPARγ) post-transcriptionally, as well as C/EBP alpha in the case of miR-27b. miR-27 can be identified both as an adipogenic inhibitor and as playing an important role in the development of obesity.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「MiR-27」の詳細全文を読む
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