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Characterization of sequentially-staged cancer cells using electrorotation.

Claudia I Trainito1, Daniel C Sweeney2, Jaka Čemažar2

  • 1CNRS SATIE Institut d'Alembert ENS Paris Saclay, France.

Plos One
|September 20, 2019
PubMed
Summary
This summary is machine-generated.

Electrorotation (EROT) measures cancer cell electrical properties. Increased membrane capacitance and conductivity correlate with malignancy, enabling non-invasive cancer cell characterization.

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Area of Science:

  • Biophysics
  • Cell Biology
  • Electrical Engineering

Background:

  • Cellular electrical properties differ between malignant and non-malignant cells.
  • Label-free cell manipulation methods are crucial for disease diagnosis.
  • Electrorotation (EROT) utilizes electrical properties for cell characterization.

Purpose of the Study:

  • To characterize individual cells in a cancer model using electrorotation.
  • To investigate the dielectric properties of cells at different malignancy stages.
  • To determine the contribution of cell membrane and nucleus to EROT response.

Main Methods:

  • Utilized a microfabricated device for cell manipulation.
  • Applied dielectrophoretic forces to suspend cells.
  • Measured cell angular velocity under rotating electric fields (3 kHz to 10 MHz).

Main Results:

  • The cell membrane significantly influences the EROT response between 3 kHz and 10 MHz.
  • Membrane capacitance, membrane conductance, and cytoplasmic conductivity increase with malignancy.
  • EROT spectra were analyzed using single-shell and double-shell models.

Conclusions:

  • Electrorotation is a promising non-invasive technique for characterizing cancer cell dielectric properties.
  • EROT can differentiate cells based on their stage of malignancy.
  • Changes in electrical properties reflect the progression of cancer phenotypes.