Mayo Clinic researchers in the United States have found that senescent cells – non-dividing “zombie” cells – accumulate in the skin as people age and may influence ageing in other parts of the body.
Their recent study revealed that transplanting senescent skin cells into a pre-clinical model revealed that they not only caused that senescence to spread to other tissues, but also accelerated physical decline, impaired muscle function and adversely affected brain health.
This discovery indicates that senescent cells in the skin could drive broader, systemic ageing.
“This discovery is significant because it suggests that senescent cells in the skin – an organ not typically associated with ageing, beyond wrinkles – might be driving broader, systemic ageing processes.
“These findings could also help explain the link between skin conditions and cognitive decline, offering potential new pathways for addressing both physical and mental deterioration as we age,” says study co-lead author Dr João Passos.
This research, published Oct 17 (2024) in the journal Aging Cell, also offers support for anti-ageing strategies that aim to keep both the body and mind healthier for longer.
“This study suggests that skin senescence may accelerate ageing in other organs, highlighting the importance of preventing factors like sun exposure, smoking, alcohol and poor diet that contribute to premature skin ageing,” says study first author Ana Catarina Franco.
The researchers aim to investigate whether senolytic drugs – originally developed at Mayo Clinic and shown to eliminate senescent cells among people with a high number of such cells – can improve overall health when applied topically to the skin.
They also plan to do more research to try to understand the mechanisms by which senescent cells may spread from the skin to other organs. – Mayo Clinic News Network/Tribune News Service
