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Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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Development of a Smart Wireless Multisensor Platform for an Optogenetic Brain Implant.

André B Cunha1, Christin Schuelke1,2, Alireza Mesri3

  • 1Department of Physics, University of Oslo, Sem Sælands vei 24, 0371 Oslo, Norway.

Sensors (Basel, Switzerland)
|January 23, 2024
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Summary
This summary is machine-generated.

This study presents a wireless, modular multisensor platform for monitoring implantable stem cell therapies. The device enables precise control and assessment of optogenetically modified neural stem cells for neurodegenerative disease treatment.

Keywords:
PSoCParkinson’s diseaseamperometrybrain implantcyclic voltammetrydopamineelectrochemistryimpedanceneural stem cellsoptogenetics

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Regenerative Medicine

Background:

  • Implantable cell therapies offer potential for neural function restoration in neurodegenerative diseases.
  • Poor cell retention and survival are major hurdles for clinical stem cell therapy implementation.
  • Precise monitoring of cell-based therapies is crucial for pre-clinical and clinical success.

Purpose of the Study:

  • To develop a smart, wireless, optogenetic neural stem cell implant system.
  • To address multidisciplinary challenges in developing advanced cell-based therapies.
  • To create a modular multisensor platform for monitoring and controlling neural stem cell implants.

Main Methods:

  • An iterative development methodology and modular design philosophy were employed.
  • A miniaturized, wireless-controlled, modular multisensor platform was developed.
  • The platform integrates an impedance analyzer, a potentiostat, and an optical stimulator.

Main Results:

  • The platform demonstrated electrical impedance spectroscopy for cell monitoring.
  • Optical stimulation successfully induced dopamine release from optogenetically modified neurons.
  • The potentiostat enabled cyclic voltammetry and amperometric detection of dopamine release.

Conclusions:

  • The developed opto-electric multisensor platform facilitates precise monitoring and control of neural stem cell therapies.
  • This technology can mitigate challenges in cell retention and survival for implantable therapies.
  • The platform is designed as an opto-electric headstage for future in vivo studies in animal models.