Tea pigments induce cell-cycle arrest and apoptosis in HepG2 cells

Figure 1 Effect of tea pigments on HepG2 cell growth.

Figure 2 Upregulation of p21^WAF1 protein expression in HepG2 cell lines treated with tea pigments visualized by ECL detection system (A) and plotted as relative protein level (B).

Figure 3 Induction of apoptosis by tea pigments in HepG2 cells. Lane 1: DNA molecular weight marker; lane 2 (control): DNA collected from untreated HepG2 cells after 3 d; lanes 3 and 4: DNA collected from HepG2 cells treated with 100 mg/L after 2 and 3 d.

Figure 4 Downregulation of Bcl-2 protein expression in HepG2 cell lines treated with tea pigments visualized by ECL detection system (A) and plotted as relative protein level (B).