The Dual Role of Sulforaphane-Induced Cellular Stress-A Systems Biological Study

Area of Science:

• Cellular Biology
• Molecular Biology
• Systems Biology

Background:

• The endoplasmic reticulum (ER) is vital for cellular homeostasis.
• ER stress triggers autophagy for survival, but excessive stress leads to cell death.
• Understanding modulators of ER stress response is crucial for disease treatment.

Purpose of the Study:

• To investigate the effects of sulforaphane (SFN) on ER stress.
• To explore how SFN-induced autophagy influences ER stress progression.
• To determine the concentration- and time-dependent effects of SFN.

Main Methods:

• Systems biology approach combining theoretical and molecular techniques.
• Analysis of SFN's impact on cell-death mechanisms and autophagy.
• Investigation of SFN's effect on mTORC1 and ULK1 pathways.

Main Results:

• SFN induced cell death in a concentration- and time-dependent manner.
• Low SFN concentrations and short treatment promoted autophagy; high concentrations and longer treatment induced cell death.
• SFN activated autophagy via mTORC1, requiring ULK1.
• SFN pre- or co-treatment enhanced cell survival under ER stress conditions.

Conclusions:

• SFN exhibits dual effects on ER stress, promoting survival at low doses and cell death at high doses.
• SFN-induced autophagy, dependent on mTORC1 and ULK1, plays a key role in cell survival.
• SFN shows potential therapeutic value for managing ER stress-related diseases.