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. 2019 Jun 17;9:8674. doi: 10.1038/s41598-019-45203-1

Figure 6.

Figure 6

Role of DNA methylation on the binding of transcription factors to FCGRT. (a) Bioinformatics analysis of transcription factors potentially targeting the FCGRT locus (−1793 bp to A+1TG region). The −1058 bp to A+1TG region is shown in orange. Regions amplified by primer sets 1, 2, and 3 are indicated in magenta, cyan and green, respectively. CpG sites are represented as circles. (b) Chromatin immunoprecipitation (ChIP) assays evaluating the binding of Sp1, GABPα, and Zbtb7a, to the FCGRT locus in AC16 cells with or without Aza treatment (5 µM, 72 h). Panels show representative agarose gel electrophoresis analysis of PCR amplification products obtained with primers sets 1–3 using input samples and immunoprecipitated DNA samples. IgG controls are also shown (right panels, top, and bottom). Images were cropped from pictures taken from 3 individual agarose gels (full length pictures are included in supplementary material file 1, Figure S3). (c) Quantitative PCR analysis of ChIP samples assessing transcription factor enrichment in FCGRT regions amplified by primer sets 1 and 2. Values are expressed relative to values from IgG control antibody. Data show the mean ± SD from two independent qPCR experiments (3–4 replicates). *** P < 0.0001, 1-way ANOVA (Turkey’s test).