Psilocybin decelerates cellular senescence
Research Square June 27, 2023 Louise Hecker, Kosuke Kato, Jennifer Kleinhenz et al.
Psilocybin, the psychoactive substance in hallucinogenic mushrooms, has shown therapeutic effects in over 136 clinical studies for psychiatric, neurodegenerative, and chronic pain conditions, though its molecular mechanisms remain unclear. This study tested whether psilocybin affects cellular aging using a human cell model of replicative senescence. Continuous treatment with psilocybin caused a dose-dependent reduction in cell-cycle arrest markers, increased DNA replication and proliferation markers, lowered senescence-associated secretory phenotype (SASP), and decreased oxidative stress, without killing senescent cells. These results provide the first experimental evidence that psilocybin may slow cellular senescence, suggesting potential as a geroprotective agent for age-related diseases.