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SID 3712249 inhibits the biogenesis of microRNA-544 (miR-544), a silencer of mammalian target of rapamycin (mTOR).1 Under hypoxic conditions, SID 3712249 (20 nM) increases MTOR mRNA expression and decreases the mRNA expression of the genes encoding miR-544, hypoxia-inducible factor-1α (HIF-1α), and ataxia-telangiectasia mutated kinase (ATM) in MDA-MB-231, MCF-7, and MCF-10A cells. It induces apoptosis in MDA-MB-231 cells in a hypoxia- and mTOR-dependent manner when used at a concentration of 20 nM. SID 3712249 (20 nM) enhances the sensitivity of MCF-7 and MDA-MB-231 cells cultured under hypoxic conditions to decreases in cell viability induced by 5-fluorouracil (5-FU; Item No. 14416). It reduces tumor growth in an MDA-MB-231 mouse xenograft model.
WARNING This product is not for human or veterinary use.
1. Small molecule inhibition of miR-