Redox Dual Action
Context-dependent curcumin redox activity explaining selective toxicity toward cancer cells
Curcumin shows context-dependent redox behaviour. This helps explain why it can protect normal cells in some settings while increasing oxidative stress in tumour cells in others.
In normal cells or lower-stress contexts
Curcumin can act as an antioxidant.
Activates Nrf2-linked antioxidant pathways
Supports endogenous antioxidant enzymes such as SOD and GSH-related systems
Helps protect healthy tissue from oxidative injury
In metabolically stressed tumour cells
Curcumin can act as a pro-oxidant.
Increases reactive oxygen species
Promotes oxidative damage and apoptosis
Exploits the higher baseline oxidative stress already present in many tumours
Why this matters
Cancer cells often live close to their redox limit. A compound that increases oxidative stress further can push them into cell death while still being relatively well tolerated by healthy tissue.
ROS dependence: Context-dependent dual action
See the references on Anticancer Mechanisms.
This information is for education only. It is not medical advice, diagnosis, or treatment. Please speak with a qualified clinician before making changes to care, medication, or supplement use.
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