Live·Open questions in longevity research

Mechanics and load

Actomyosin contraction

Active cellular contraction generated by actomyosin

Hypotheses on this target 3

Actomyosin contractionInhibition. Hypotheses on this target 22Activation. Hypotheses on this target 11Function preservation. Hypotheses on this target 0Remodelling. Hypotheses on this target 0Load normalisation. Hypotheses on this target 0Direct measurement. Hypotheses on this target 0

Inhibition2

  • Bending-triggered calcium entry may make skin cells contract and initiate cracks after drying

    Where this hypothesis actsLiving keratinocytes beneath an unevenly dried stratum corneum during bending

    What is proposedBriefly suppress excessive contractile force

    With whatSmall molecule

    HowBrief pharmacological inhibition of myosin II while preserving initial modulus, passive relaxation, hydration, geometry and external load

    Possible resultPossible prevention of the first edge microcrack and preservation of mechanical stability

    2026-09-25

  • A self-supporting matrix may determine when senescent cell removal preserves skin strength

    Where this hypothesis actsCells within healing skin tissue during assessment of passive matrix load transmission

    What is proposedBriefly suppress contraction to test whether the matrix bears load independently

    With whatNot stated in the record

    HowCompare paired samples with maintained and temporarily suppressed cellular contraction; the suppression technique is not stated

    Possible resultExpected identification of a stable passive load-bearing network that marks the safe time for cell removal

    2026-09-26

Activation1

  • Precisely timed fibroblast contraction protects aging skin during movement

    Where this hypothesis actsFibroblasts in aged skin under cyclic deformation, especially with impaired hypodermal support

    What is proposedRestore contractile responses timed to oppose deformation

    With whatTargeted delivery

    HowUse fibroblast-targeted, FAK-independent actomyosin activation synchronized to imposed deformation, without increasing mean shortening, residual prestress, or matrix deposition

    Possible resultPossible restoration of damping and fatigue resistance without renewed chronic contracture

    2026-09-21