Figure 2. HBV infection induces DNA demethylation of SALL4 in HepG2hNTCP cell line.
(a) Quantification of secreted HBeAg by ELISA (Left panel), and quantification of pregenomic RNA by QPCR (Right panel) after HBV infection for 6 days. (b) Quantification of SALL4 gene expression (SALL4A and SALL4B slicing variants) by QPCR after HBV infection for 4 and 6 days (D4, D6). (c) Bisulfite sequencing PCR results of SALL4 clones, using DNA from HepG2hNTCP cells without (−) HBV infection (D0) or with (+) HBV infection at 4 and 6 days (D4 and D6). Open and closed circles denote unmethylated and methylated states, respectively. Error bars denote S.D. *P< 0.05; **P< 0.01.