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Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...

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Cellular Mechanosensitivity: Validation of an Adaptable 3D-Printed Device for Microindentation.

Giulio Capponi1,2, Martina Zambito2, Igor Neri1

  • 1Dipartimento di Fisica e Geologia, Università di Perugia, 06100 Perugia, Italy.

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Summary

Researchers developed an affordable, 3D-printed device for microindentation to measure cellular mechanotransduction. This open-hardware tool quantifies the function of mechanosensitive ion channels, like Piezo1, in living cells.

Keywords:
3D printingmechanobiologymechanosensitivitymechanotransductionpiezo1

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Area of Science:

  • Cell Biology
  • Biophysics
  • Biomedical Engineering

Background:

  • Mechanotransduction is the cellular process of converting mechanical stimuli into biochemical signals, crucial for physiology and homeostasis.
  • Mechanosensitive ion channels (MSCs), particularly Piezo1 and Piezo2, are key mediators of this process.
  • Existing assays for mechanosensitivity are often costly or unreliable, hindering research.

Purpose of the Study:

  • To develop an affordable and reliable open-hardware assay for measuring cellular mechanotransduction.
  • To provide a versatile platform for stimulating single cells and observing downstream effects of MSCs.
  • To advance the understanding of Piezo channel function in cellular responses.

Main Methods:

  • Designed and validated a 3D-printed actuation platform for controlled microindentation of single adherent cells.
  • Utilized genetic and pharmacological manipulation of Piezo1 expression and activity in a neural cell line.
  • Measured cellular responses to mechanical stimuli to assess mechanosensitivity.

Main Results:

  • Successfully demonstrated the device's capability to measure Piezo1-mediated mechanosensitivity in a mouse neural cell line.
  • Validated the assay's reliability through genetic and pharmacological interventions.
  • The open-hardware approach proved effective in quantifying cellular responses to mechanical force.

Conclusions:

  • The developed microindentation device offers an accessible and versatile tool for studying mechanotransduction.
  • This technology can be integrated with various readout systems, enhancing the study of MSCs.
  • The findings provide a new avenue for investigating cellular mechanobiology and its role in health and disease.