Noncoding RNA

Across 333 annotated animal species, absolute ncRNA length was positively associated with lifespan. The article presents noncoding RNA evolution as a candidate explanation for large animal lifespan differences that protein-coding genes have not sufficiently explained. Relative ncRNA length showed a positive but statistically nonsignificant trend with lifespan. The paper hypothesizes that longer-lived species accumulate more ncRNA sequence and specific ncRNA motifs. The study interprets ncRNAs as evolutionary drivers of animal lifespan because ncRNA length, unlike protein-coding length, was positively associated with lifespan. The study frames ncRNA evolution as a foundation for future longevity and aging research.