Gene helps worms stay active under mild low-oxygen stress
Worms lacking a gene for a signaling protein had weaker movement benefits and a blunted gene-activity response to cobalt chloride.
Limit: Movement under reduced oxygen itself was not measured; worms received cobalt chloride
Edited by Boris Djordjevic · AgingResearch.News
In Caenorhabditis elegans worms, laboratory experiments tested how ador-1, a gene for a signaling protein, contributed to responses to mild low-oxygen stress. Researchers exposed worms with and without the gene to low-dose cobalt chloride. Automated imaging tracked movement, speed and lifespan measures.
Worms with ador-1 sustained movement longer and traveled farther throughout adulthood. These benefits were markedly weaker in worms lacking the gene, which also had poorer baseline healthspan—the time spent functioning well. Gene-activity analyses identified coordinated changes in pathways related to nerve and muscle function and mitochondrial adaptation. Mitochondria are cells’ energy-producing structures. Worms lacking ador-1 had a substantially blunted gene-activity response to cobalt chloride.
Why it matters
Maintaining movement with age is one aspect of healthspan. The authors propose that successful adaptation to low oxygen requires coordinated regulation across multiple biological systems.
Caveats
The healthspan findings relied on movement measures in worms exposed to cobalt chloride. These experiments did not test whether low-oxygen exposure improves healthspan in people.
The paper
Health Research Institute of the Balearic Islands; Universitat de les Illes Balears
Free Radical Biology & Medicine, Jun 19, 2026
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