The fully ripe banana produces a substance called TNF (Tumor Necrosis Factor) which has the ability to combat abnormal cells. So don’t be surprised very soon the shop will go out of stock for bananas.
How does TNF kill cancer cells? Tumor necrosis factors (or the TNF-family) refer to a group of cytokines family that can cause cell death.
Mechanism: TNF acts via the TNF Receptor (TNF-R) and is part of the extrinsic pathway for triggering apoptosis. TNF-R is associated with procaspases through adapter proteins (FADD, TRADD, etc.) that can cleave other inactive procaspases and trigger the procaspase cascade, irreversibly committing the cell to apoptosis.