Protein disposal preserves tissue function

Ageing researchers are asking whether clearing damaged proteins can keep tissues working when mitochondrial cleanup fails. This proposed mechanism says inhibiting mTOR, a nutrient-sensing growth regulator, may boost ubiquitin-tagged protein disposal through the proteasome, the cell’s protein-recycling machine. The test disables mitophagy, the removal of damaged mitochondria, then asks whether protection follows that extra disposal. Selectively removing it should erase protection; restoring proteasomal flux, the breakdown rate, should return it. That pattern would support a shared mediator across tissues rather than delayed death from one problem.