As shown in Figure 1 B, cotransfection of miR-148b mimics with the DNMT1 3′UTR reporter resulted in a decrease (40%) in luciferase activity and a highly significant decline in mRNA of DNMT1 in A549/DDP cells.
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miR-148b reverses cisplatin-resistance in non-small cell cancer cells via negatively regulating DNA (cytosine-5)-methyltransferase 1(DNMT1) expression.
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