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Electromechanical Nanogenerator-Cell Interaction Modulates Cell Activity.

Gonzalo Murillo1, Andreu Blanquer2, Carolina Vargas-Estevez1

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This summary is machine-generated.

Living cells cultured on piezoelectric nanogenerators generate their own electrical fields, stimulating cell activity and opening new avenues for bioelectronic therapies without external chemical or physical intervention.

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Area of Science:

  • Bioelectronic Medicine
  • Cellular Electrophysiology
  • Nanotechnology

Background:

  • Noninvasive electrical stimulation offers alternatives to drug-based therapies.
  • Understanding cell-material interactions is crucial for bioelectronic applications.

Purpose of the Study:

  • To investigate the self-stimulation of cell activity by piezoelectric nanogenerators (NGs).
  • To explore the potential of NGs for in situ electrical modulation of cell behavior.

Main Methods:

  • Culturing cells (macrophages, Saos-2 osteoblast-like cells) on 2D ZnO nanosheet-based NGs.
  • Analyzing electromechanical interactions between cells and NGs.
  • Measuring cell motility, ion channel activity, and intracellular calcium transients.

Main Results:

  • NG-cell interactions induced local electric fields that modulated cell activity.
  • Macrophage motility was stimulated.
  • Osteoblast-like cells exhibited ion channel opening and calcium transients.
  • High cell viability, proliferation, and differentiation were observed.

Conclusions:

  • Piezoelectric nanogenerators can achieve in situ, cell-scale electrical stimulation.
  • This approach holds promise for bioelectronic therapies targeting excitable cells like neurons and muscle cells.