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Related Experiment Video

Updated: Oct 17, 2025

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
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Evaluating methods and protocols of ferritin-based magnetogenetics.

Miriam Hernández-Morales1,2, Victor Han1,2, Richard H Kramer3

  • 1Department of Electrical Engineering and Computer Sciences, University of California, 505 Cory Hall MC# 1770, Berkeley, CA 94720, USA.

Iscience
|October 8, 2021
PubMed
Summary
This summary is machine-generated.

Ferritin iron Redistribution to Ion Channels (FeRIC) uses magnetic fields to control cell activity. This study identifies key experimental factors influencing FeRIC

Keywords:
BioelectromagneticsBiology experimental methodsGenetics

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Area of Science:

  • Biophysics
  • Cellular Biology
  • Magnetogenetics

Background:

  • Magnetogenetics offers remote control of cellular functions.
  • Ferritin iron Redistribution to Ion Channels (FeRIC) is a novel magnetogenetic technique.
  • FeRIC couples cellular ferritins to TRPV channels for RF-mediated activation.

Purpose of the Study:

  • To investigate factors affecting FeRIC efficiency.
  • To optimize magnetogenetic protocols using FeRIC.
  • To understand the biochemical pathway of RF-induced TRPV channel activation.

Main Methods:

  • Utilized RF alternating magnetic fields to stimulate cells expressing ferritin-tagged TRPV channels.
  • Manipulated ferritin expression, iron load, TRPV expression, and cellular redox state.
  • Measured changes in cytosolic Ca2+ levels as an indicator of channel activation.

Main Results:

  • Identified specific experimental factors that enhance or abolish RF control of ferritin-tagged TRPV.
  • Demonstrated that ferritin expression, iron load, TRPV expression, and redox state significantly impact FeRIC efficacy.
  • Elucidated the biochemical pathway involving iron, reactive oxygen species, and oxidized lipids in FeRIC.

Conclusions:

  • FeRIC efficacy is highly sensitive to cellular conditions.
  • Optimizing ferritin expression, iron loading, TRPV function, and redox state is crucial for reproducible magnetogenetics.
  • These findings provide a foundation for refining FeRIC protocols for broader applications.