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Related Experiment Video

Updated: Jun 24, 2025

Functional Evaluation of Biological Neurotoxins in Networked Cultures of Stem Cell-derived Central Nervous System Neurons
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Dual-Modal Cellular Nanoparticles for Continuous Neurotoxin Detoxification.

Mingxuan Kai1, Wei-Ting Shen1, Yiyan Yu1

  • 1Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, Shu and K.C. Chien and Peter Farrell Collaboratory, University of California San Diego, La Jolla, California 92093, United States.

Nano Letters
|June 10, 2024
PubMed
Summary

This study introduces Neuron-MOF/SxtN-NPs, a novel nanoparticle for continuous neurotoxin neutralization. These biomimetic nanomedicines significantly improve survival rates in neurotoxin-intoxicated mice with no observed adverse effects.

Keywords:
Nanomedicinecell membrane coatingcellular nanoparticledetoxificationneurotoxin

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Area of Science:

  • Biomaterials Science
  • Nanomedicine
  • Toxicology

Background:

  • Neurotoxins pose a significant threat due to their lethality and diverse nature.
  • Existing countermeasures lack broad-spectrum efficacy against the wide array of neurotoxins.
  • Development of effective and versatile neurotoxin neutralization strategies is critical.

Purpose of the Study:

  • To engineer a dual-modal cellular nanoparticle (CNP) for continuous neurotoxin neutralization.
  • To develop a biomimetic nanomedicine platform combining membrane-based and enzyme-based neutralization mechanisms.
  • To evaluate the efficacy and safety of the novel nanoparticle formulation against neurotoxins.

Main Methods:

  • Encapsulation of N-sulfotransferase (SxtN) enzyme within metal-organic framework (MOF) nanoparticle cores.
  • Coating of MOF/SxtN nanoparticles with a natural neuronal membrane, creating Neuron-MOF/SxtN-NPs.
  • In vitro validation of enzyme protection and continuous saxitoxin (STX) neutralization.
  • In vivo assessment of survival rates in a mouse model of STX intoxication and acute toxicity studies.

Main Results:

  • The MOF core successfully protected the encapsulated SxtN enzyme payload.
  • Neuron-MOF/SxtN-NPs demonstrated continuous neutralization of saxitoxin (STX).
  • In vivo studies showed significantly improved survival rates in STX-intoxicated mice treated with the nanoparticles.
  • Acute toxicity assessments indicated no adverse effects in healthy mice administered with Neuron-MOF/SxtN-NPs.

Conclusions:

  • Neuron-MOF/SxtN-NPs offer a dual-modal approach for broad-spectrum neurotoxin neutralization.
  • This biomimetic nanomedicine platform provides continuous neutralization and enhanced protection against neurotoxins.
  • The developed nanomedicine represents a promising advancement in developing effective countermeasures against neurotoxin threats.