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. 2021 Jun 23;40(30):4930–4940. doi: 10.1038/s41388-021-01899-y

Fig. 3. MUC1-C→E2F1 pathway induces ARID2 and BRD7 expression.

Fig. 3

A Schemas of the ARID2 and BRD7 promoter regions with positioning of putative E2F binding motifs. B, C Soluble chromatin from DU-145 cells was precipitated with anti-E2F1, anti-MUC1-C or a control IgG (left). Soluble chromatin was precipitated with anti-MUC1-C (ChIP) and then reprecipitated with anti-E2F1 or a control IgG (re-ChIP) (right). The DNA samples were amplified by qPCR with primers for the ARID2 (B) and BRD7 (C) promoter regions. The results (mean ± SD of 3 determinations) are expressed as the relative fold enrichment compared to that obtained with the IgG control (assigned a value of 1). D, E DU-145/tet-MUC1shRNA cells were treated with vehicle or DOX for 7 days. Soluble chromatin was precipitated with anti-E2F1 or a control IgG. The DNA samples were amplified by qPCR with primers for the PBRM1 (D) and BRD7 (E) promoter regions. The results (mean ± SD of 3 determinations) are expressed as the relative fold enrichment compared to that obtained with the IgG control (assigned a value of 1). F DU-145/CshRNA and DU-145/E2F1shRNA cells were analyzed for ARID2 and BRD7 mRNA levels by qRT-PCR. The results (mean ± SD of 4 determinations) are expressed as relative mRNA levels compared to that obtained for CshRNA cells (assigned a value of 1). G Lysates from DU-145/CshRNA and DU-145/E2F1shRNA (left) or LNCaP-AI/CshRNA and LNCaP-AI/E2F1shRNA (right) cells were immunoblotted with antibodies against the indicated proteins.