ChIP analysis was performed as previously reported [27 (link)] by using 5 μg of the following antibodies: rabbit anti-H3K4me3 (07473), rabbit anti-H3K27me3 (07449), rabbit anti-H3AcK9 (07352), or rabbit IgG as a negative control (12307) (all from Millipore, MA, USA). 5 ng of immunoprecipitated DNA and the relative control were used as templates for RT-qPCR analysis, performed in duplicate. Primers utilized to amplify the HNF1/6 consensus on HNF4α promoter are as follows: forward 5′-TCCGAAAGACCCAAGTGTGG-3′ and reverse 5′-GCCAATCACGTCCCAGATCA-3′.
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