Reducing seven genes’ activity extended lifespan in worms
Worms lived longer than controls after researchers reduced each of seven genes’ activity separately, beginning on the fifth day of adulthood.
Our read
Mechanisms- Studied:
- Experiments in Caenorhabditis elegans worms, against control worms
- What changed:
- Worms lived longer than controls when researchers reduced each of seven genes’ activity separately
- The catch:
- Gene selection ignored brain cell proportions; adjusting for them removed all age-group gene-activity differences
- Stake:
- An author founded Recuerdo Pharmaceuticals.
- Why it’s aging research:
- Lifespan, survival or healthspan.
Editor of record: Boris Djordjevic · AgingResearch.News
In experiments with Caenorhabditis elegans worms, reducing the activity of seven genes, tested separately, extended lifespan compared with controls. The researchers used a feeding method to reduce gene activity starting on the fifth day of adulthood, with three repeats per condition.
They chose the genes through an observational analysis of gene activity in 41 postmortem human brain samples from people aged 24 to 106 without neurological or cognitive abnormalities. The samples came from the prefrontal cortex, a region at the front of the brain. The team compared aging-related gene activity with patterns in Alzheimer’s disease to identify potentially protective genes. They selected seven with counterparts in worms for the lifespan experiments.
Why it matters
Preserving brain function with age is a central goal in Alzheimer’s research. The authors suggested that the predicted brain-resilience genes could be candidate targets for treatments for memory and thinking problems.
Caveats
The worm lifespan experiments did not test prevention of human dementia. The observational human analysis omitted an adjustment for brain cell proportions that had removed all age-group differences in gene activity.
The paper
Molecular Networks and Key Regulators Underlying Resilience of the Human Brain to Aging and Dementia
Icahn School of Medicine at Mount Sinai
Biomolecules, Jul 6, 2026, Open access
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