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Genetically encoded mechano-sensors with versatile readouts and compact size.

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Researchers developed new coiled-coil sensors to measure molecular forces in living cells. This breakthrough simplifies in vivo mechanical force quantification across diverse biological processes.

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Area of Science:

  • Biophysics
  • Molecular Biology
  • Cell Biology

Background:

  • Mechanical forces are vital for cellular functions.
  • Quantifying molecular-scale forces in vivo is difficult.

Purpose of the Study:

  • To introduce a novel strategy for in vivo mechanical force measurement.
  • To develop genetically encoded, tunable, and modular mechano-sensors.

Main Methods:

  • Utilized calibrated coiled-coils as genetically encoded mechano-sensors.
  • Employed diverse readouts including luminescence, fluorescence, and analytical biochemistry.
  • Applied sensors in yeast, nematodes, and mammalian cells.

Main Results:

  • Successfully measured forces during yeast cytokinesis and endocytosis.
  • Mapped force distributions in nematode axons.
  • Quantified forces transmitted to the nucleus and within focal adhesions in mammalian cells.
  • Discovered new insights into intracellular force transmission.

Conclusions:

  • Calibrated coiled-coils offer a simplified and broadly applicable method for in vivo force measurement.
  • These sensors provide novel insights into intracellular force dynamics.
  • The technology is compatible with standard biological laboratory instrumentation.