Circular DNA fragments outside the nucleus (anellomes) follow distinct sex-specific patterns across the lifespan, with different trajectories in men and women that may reflect fundamental differences in cellular aging. These patterns offer a quantifiable marker for tracking how cellular stress accumulates and resolves differently between sexes.
Key Points
- Anellome abundance shows biphasic, sex-dependent trajectories across lifespan
- Women and men display different cellular stress accumulation patterns
- Circular DNA dynamics may serve as aging biomarker independent of chronological age
Longevity Analysis
The anellome represents a measurable window into how cells handle oxidative and replicative stress over time. Since these circular DNA fragments accumulate in response to cellular damage and stress, their sex-specific trajectories suggest that men and women age at different rates and through different mechanisms at the cellular level. Understanding these patterns allows for more precise interpretation of individual aging status—moving beyond chronological age to detect actual cellular burden and recovery capacity. This distinction becomes clinically relevant when designing interventions that may need to account for sex-based differences in how cells accumulate and clear damage.
Original published by Nature - npj Aging, by Yakhouba Kane.