06 / 08 · Research directions
Key mechanisms of longevity
Find processes whose targeted alteration changes lifespan, tissue function or resilience.
Find the processes that make a causal difference
A mechanism becomes a useful target when changing it changes an outcome. Nutrient sensing, damage repair, protein quality control, cellular senescence and epigenetic regulation offer candidate routes. The central task is to identify where, when and how much to intervene, and which effects matter to the whole organism.
What to investigate
Perturb a candidate process and measure downstream effects with appropriate controls.
Identify the tissue, cell type and age at which the intervention produces its benefit.
Check replication, dose dependence and the consequences for development, fertility and disease risk.
Evidence to build on
A 2022 study selectively removed the insulin-like receptor DAF-2 in the intestine of C. elegans and reported a near doubling of lifespan with limited fitness costs under the tested conditions. The experiment illustrates why tissue specificity matters when testing a longevity mechanism.
What remains unresolved
The result comes from a nematode model. Conservation of a signalling pathway can motivate further work, while the useful tissue, dose, timing and safety profile in mammals remain separate experimental questions.
The next useful experiment
Test the same candidate mechanism in different tissues and at different ages, measuring survival alongside function and adverse outcomes.
Proposed experiments →The wider strategy
The presentation treats the search for a leading mechanism as a distinct route. Its candidates range from extracellular matrix damage and vascular changes to genome instability and epigenetic regulation.
The Death-Fighting Spectrum presentation ↗