Live·Open questions in longevity research

Rhythm or programme

Circadian phase distribution

The distribution of cells across different phases of their molecular clocks

Hypotheses on this target 3

Circadian phase distributionInhibition. Hypotheses on this target 0Activation. Hypotheses on this target 0Function preservation. Hypotheses on this target 0Feedback restoration. Hypotheses on this target 0Rhythm restoration. Hypotheses on this target 33Direct measurement. Hypotheses on this target 0
  • Inhibition
  • Activation
  • Function preservation
  • Feedback restoration
  • Rhythm restoration3
  • Direct measurement

Rhythm restoration3

  • Synchronized cilium loss may prolong skin growth by removing a brake on cell-cycle re-entry

    Where this hypothesis actsDermal fibroblasts during recovery after a sleep shift

    What is proposedBroaden the distribution of fibroblast clock phases while keeping the mean phase unchanged

    With whatNot stated in the record

    HowCompare narrow and broad phase distributions in reconstructed skin with matched mean phase, clock amplitude, cell composition, injury and total treatment

    Possible resultPossible shorter periods of shared cilium loss and less residual proliferation before the next cycle

    2026-09-25

  • The order of irritation and stretching may shift skin cell clocks and alter barrier recovery

    Where this hypothesis actsKeratinocytes and fibroblasts after irritation and stretching, with measured functions restored to youthful ranges

    What is proposedAlign the phases of molecular clocks in both cell populations

    With whatNot stated in the record

    HowApply a synchronizing intervention, then withdraw it; keep extracellular matrix and p300 distribution comparable across control arms. The intervention is not specified

    Possible resultExpected elimination of the response difference between irritation–stretching sequences after synchronization ends

    2026-09-25

  • Aligned cellular clocks cause local skin repair failures

    Where this hypothesis actsNeighboring epithelial repair units repeatedly exposed to a daily heat–friction–barrier sequence

    What is proposedMaintain diverse circadian phases among functionally interchangeable repair contributors

    With whatCell therapy

    HowAssemble independently entrained epithelial microtissues into shared repair neighborhoods with staggered clock phases, verifying that imposed phase offsets persist

    Possible resultPossible recovery rescue by reducing coincident repair outages without accelerating individual contributors

    2026-09-21