70% confluence hESCs were treated with Ad-ATF3-His or Ad-LacZ for 2 days. Crosslink, cell lysis, genomic DNA fragments extraction were performed as described32 (link), and then immunoprecipitated using ATF3 antibody (ChIP Grade, ab207434, Abcam) and nonspecific IgG as technical control. The specific primers that were used to amplify the hsa-miR-135b promoter DNA fragments containing a putative ATF3 binding sequence were 5′-CAGCTGAAGCCCTCTTTCTG-3′ and 5′-AGGAGGGTCTGGGTAAAGGA-3′.
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