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Platinum Nanoparticle-Based Microreactors as Support for Neuroblastoma Cells.

Adam Armada-Moreira1,2,3, Essi Taipaleenmäki1, Marie Baekgaard-Laursen1

  • 1Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark.

ACS Applied Materials & Interfaces
|October 31, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed microreactors with platinum nanoparticles to combat excitotoxicity in neurological diseases. These devices safely reduce harmful hydrogen peroxide and ammonia levels in cell cultures, showing therapeutic potential.

Keywords:
Polydopamineammonia toxicityexcitotoxicityneuroblastoma cellsoxidative stressplatinum nanoparticles

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Nanotechnology

Background:

  • Excitotoxicity, linked to impaired glutamate clearance, drives neurotoxicity in neurological diseases.
  • This process involves overactivated glutamate receptors, leading to reactive oxygen species and ammonia toxicity.

Purpose of the Study:

  • To develop and assess microreactors with artificial enzyme capabilities for treating excitotoxicity.
  • To evaluate the biological response and therapeutic potential of these microreactors in a human neuroblastoma cell model.

Main Methods:

  • Microreactors were fabricated using platinum nanoparticles as artificial enzymes and poly(dopamine) terminating layers.
  • The microreactors' efficacy in depleting hydrogen peroxide (H2O2) and ammonia was tested.
  • Biological response and toxicity were assessed in human neuroblastoma cell cultures.

Main Results:

  • Microreactors effectively scavenged H2O2 and ammonia, confirming their intended function.
  • Cell proliferation correlated with microreactor concentration, with no inherent toxicity observed.
  • Microreactors ameliorated excitotoxicity effects in cell culture.

Conclusions:

  • The developed microreactors demonstrate a safe and effective method for reducing excitotoxicity.
  • These findings suggest a promising therapeutic strategy for neurological diseases associated with excitotoxicity.