Tumor suppressors play important roles in the regulation mechanisms of tissue homeostasis, cell self-renewal, regeneration, and aging.
Cell division and reproduction can be negatively impacted by stressors internal and external resulting in cellular senescence , ageing and disease.
In cellular senescence, the mechanism is managed by p53 and RB tumor suppressor proteins and is an important anticancer mechanism. Senescent cells may undergo changes that contribute to aging and certain age-related diseases, including late onset cancers. The senescence response maybe promoting early-life survival by restraining the potential of child hood disease and cancers but eventually limiting life span as senescent cells accumulate gradually over time .