Identification of putative Hdc enhancers.
A, BMMCs were used for ChIP-seq (duplicate samples were used
for H3K4me1 ChIP-seq and triplicate samples were used for H3K27ac ChIP-seq).
H3K4me1 and H3K27ac ChIP-seq data were analyzed with the Integrative Genomics
Viewer. Red bars indicate putative Hdc enhancers that show
significant H3K4me1 and H3K27ac modifications. RPM: reads per million
nucleotides; E: enhancer, +0.3 indicates the distance from the beginning of the
downstream Hdc enhancer to the TSS of the Hdc
gene, and −8.8 indicates the distance from the beginning of the upstream
Hdc enhancer to the TSS of the Hdc gene.
B, Scheme of the luciferase constructions (upper panel) and
luciferase reporter analysis of the Hdc enhancer activities in
the CFTL-15 mast cell line_(lower panel). Error bars represent mean ±
SEM, n=3 transfectants. HdcMP: Hdc minimal
promoter.