A single chemical from your gut can reverse aging and help you live 50% longer by fixing 'typos' in how your body makes proteins.
March 25, 2026
Original Paper
Evolutionarily Conserved Decline of tRNA Mannosyl-Queuosine Links Translational Regulation to Aging and Is Reversed by Queuine
bioRxiv · 10.64898/2026.03.22.713446
The Takeaway
Scientists discovered that a specific chemical tag on our protein-building 'tRNA' molecules consistently disappears as we age across species. By supplementing with 'queuine'—a precursor made by gut bacteria—they restored these tags and dramatically increased the lifespan of fruit flies while reversing cellular aging markers.
From the abstract
Aging arises from interconnected molecular defects, yet upstream regulatory mechanisms that coordinate these hallmarks remain incompletely defined. While epitranscriptomic regulation has emerged as a critical layer of gene control, the contribution of tRNA-specific modifications to aging remains largely unexplored. Here, we systematically profile tRNA modifications across multiple organs, species, and senescence models and identify mannosyl-queuosine (manQ), a wobble-position modification of tRN