(A). BrdU immunofluorescence labeling (2h) was performed in preadipocytes and adipocytes treated with the DNA synthesis inhibitor aphidicolin (APC) (1μg/mL, daily 4X). (B) MTT cell proliferation assay was performed in preadipocytes and adipocytes treated with aphidicolin (APC) (1μg/mL, daily 4X). (C). Propidium iodide cell cycle flow cytometry analysis was performed on preadipocytes and adipocytes treated with APC (1μg/mL, daily 4X). (D). Subcellular fractionation was performed on adipocytes treated with either guadecitabine (100nM, daily 3X) alone or APC (1μg/mL, daily 4X) starting on day 1 and guadecitabine together with APC therein after for 3 days. Western blot was performed on cytoplasmic and chromatin fractions and probed for DNMT1, histone H3, and GAPDH. All experiments were performed in triplicate. (*P < 0.05).