Long-lived species share DNA maintenance and stress response pathways
Researchers surveyed 101 species that live past 250 years, mostly plants, to compare mechanisms of lifespan variation. Both within-species and between-species differences involve DNA maintenance, stemness, and stress management. These mechanisms resemble those active in early development and germ cells.
The survey spans an extraordinary range of lifespans, from species barely reaching 250 years to those living up to 80,000 years, with a few considered potentially immortal. Notably, no mammal appears on the list, and plants dominate the sample at 90 of the 101 species examined.
The researchers compared genetic, transcriptional, proteomic, and metabolomic data alongside regeneration and stress responses. They found that lifespan variation—whether between species or between individuals of the same species—consistently involves DNA maintenance, stemness, and stress management pathways. These same mechanisms are characteristic of early development and germ cells, suggesting shared biological foundations for longevity.
This research could eventually inform human longevity interventions by identifying which biological pathways most consistently correlate with extended lifespan across diverse species. If DNA maintenance, stemness, and stress management prove broadly transferable, therapies targeting these mechanisms may help extend human healthspan. However, the study's own caveats—limited molecular data and methodological inconsistencies—suggest practical applications remain distant. Society may benefit most from refined research priorities rather than immediate clinical breakthroughs.