Figure 8.
TGF-β1 mediates repression of miR-217 via de novo methylation. (*p<0.05; **p<0.01)
A: qRT-PCR analysis demonstrating that CSC exposure (48h) increased TGF-β1 expression in Het-1A, EsC1, EsC2, and OE19 cells.
B: qRT-PCR analysis demonstrating that 48h exposure to recombinant TGF-β1 decreased miR-217 expression in Het-1A and EACC.
C: qRT-PCR analysis demonstrating that a neutralizing TGF-β1 antibody modestly increased miR-217, but not miR-216a expression in Het-1A, EsC1, EsC2, and OE19 cells.
D: MeDIP analysis demonstrating that recombinant TGF-β1 increased DNA methylation levels in Het-1A cells at 5ng/ml, and in EsC1 and EsC2 cells at 10ng/ml level. This neutralizing antibody had no effect on DNA methylation within UBE2B or H19 ICR.