Human Gene Set: CARD_MIR302A_TARGETS

Standard name CARD_MIR302A_TARGETS
Systematic name M2208
Brief description Potential targets of MIR302A [GeneID=407028].
Full description or abstract Oct4 and Sox2 are transcription factors required for pluripotency during early embryogenesis and for the maintenance of embryonic stem cell (ESC) identity. Functional mechanisms contributing to pluripotency are expected to be associated with genes transcriptionally activated by these factors. Here, we show that Oct4 and Sox2 bind to a conserved promoter region of miR-302, a cluster of eight microRNAs expressed specifically in ESCs and pluripotent cells. The expression of miR-302a is dependent on Oct4/Sox2 in human ESCs (hESCs), and miR-302a is expressed at the same developmental stages and in the same tissues as Oct4 during embryogenesis. miR-302a is predicted to target many cell cycle regulators, and the expression of miR-302a in primary and transformed cell lines promotes an increase in S-phase and a decrease in G(1)-phase cells, reminiscent of an ESC-like cell cycle profile. Correspondingly, the inhibition of miR-302 causes hESCs to accumulate in G(1) phase. Moreover, we show that miR-302a represses the productive translation of an important G(1) regulator, cyclin D1, in hESCs. The transcriptional activation of miR-302 and the translational repression of its targets, such as cyclin D1, may provide a link between Oct4/Sox2 and cell cycle regulation in pluripotent cells.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18710938   Authors: Card DA,Hebbar PB,Li L,Trotter KW,Komatsu Y,Mishina Y,Archer TK
Exact source Fig. 4S
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Organism Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
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Version history 3.1: First introduced

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