Research Article

Induction of Endoplasmic Reticulum Stress Pathway by Green Tea Epigallocatechin-3-Gallate (EGCG) in Colorectal Cancer Cells: Activation of PERK/p-eIF2α/ATF4 and IRE1α

Figure 6

Mechanism of action of EGCG in colorectal cancer (CRC). ER stress is induced by EGCG and activates UPR proteins, PERK (with its downstream targets eIF2α and ATF4), and IRE1α. Caspase 3/7 activity is also enhanced, indicating apoptosis occurrence in the colorectal cancer cells.