Researchers have identified that overexpression of the RNASEK protein, which degrades circular RNAs, significantly slows aging in the model organism Caenorhabditis elegans. As RNASEK levels decline with age, circular RNAs accumulate, suggesting a potential causal relationship between circular RNA aggregation and cellular dysfunction. By artificially increasing RNASEK expression, the study demonstrates an extension of lifespan and improved healthspan, indicating that circular RNAs may indeed contribute to aging-related decline.

This finding is pivotal for the longevity and healthspan research community as it shifts the perspective on circular RNAs from mere biomarkers of aging to active participants in the aging process. The research underscores the importance of RNASEK in preventing the formation of toxic stress granules that disrupt cellular function, a mechanism that appears relevant not only in worms but also in human cells.

A key takeaway from this study is the potential for RNASEK-targeted therapies to mitigate age-related decline by enhancing the clearance of harmful circular RNAs, opening new avenues for longevity interventions.

Source: fightaging.org