GoKawiilStudy finds cold temperature triggers BH2-related metabolic pathway extending C. elegans lifespan
Researchers studying the roundworm Caenorhabditis elegans report that lowering ambient temperature activates a metabolic network built around tetrahydrobiopterin (BH2/BH4) precursors that promotes longer lifespan and better protein quality control (proteostasis). The work used an extensive panel of mutant worm strains—including those lacking enzymes in dopamine, serotonin and pterin biosynthesis pathways—to trace how cold exposure engages this network. Experiments were conducted across three standard rearing temperatures, 15°C, 20°C and 25°C, in adult hermaphrodite worms.
GoKawiil's interpretation of the reporting above, not reported fact.
The findings add to a body of research linking lower temperatures to extended lifespan in simple organisms, suggesting a specific biochemical pathway—rather than general metabolic slowdown—may underlie some of these effects. Because proteostasis decline is associated with aging and neurodegenerative disease in many species, the researchers' identification of this BH2-linked network could point toward conserved mechanisms worth exploring in more complex animals, though that extrapolation remains speculative at this stage. The use of numerous genetic mutants and tissue-specific RNAi tools indicates the team aimed to pinpoint which tissues and genes drive the response, which could guide future targeted studies.
- Cold exposure activates a BH2/BH4 metabolic network in C. elegans linked to longevity and proteostasis.
- Researchers used a wide array of mutant strains affecting dopamine, serotonin and pterin pathways to study this response.
- Tissue-specific RNAi techniques were employed to localize where the cold-induced pathway operates in the worm.
Source: nature.com — Lee, 2026-10-21
Published there as: “Cold activates a BH2 metabolic network promoting longevity and proteostasis”
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