Reversing aging in old cells by targeting PURPL RNA through gene activity changes

PURPL lncRNA appears to help maintain senescent-cell programs through H3K9me3-linked transcriptional control.

Cell-based CRISPRi and overexpression experiments in senescent cells linked PURPL depletion to youthful morphology and lower p21 and SA-beta-gal, while PURPL overexpression accelerated senescence-like transcriptional and phenotypic changes.

The findings come from cell models and marker or genomic endpoints, so they do not establish organism-level rejuvenation or therapeutic benefit in age-related disease.