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A Robust Nanoparticle-based Magnetic Separation Method for Intact Lysosomes.

The Son Le1, Mari Takahashi1, Shinya Maenosono1

  • 1School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan.

Bio-Protocol
|August 8, 2022
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Summary

This study introduces magnetic-plasmonic nanoparticles (MPNPs) for tracking lysosome trafficking and isolation. This method improves upon traditional probes, enabling efficient isolation of intact lysosomes from various cell types.

Keywords:
EndocytosisEndolysosomal pathwayIntracellular traffickingLysosomesMagnetic separationNanoparticlesPlasmonic imaging

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Area of Science:

  • Cell Biology
  • Nanotechnology
  • Biochemistry

Background:

  • Lysosome isolation is crucial for understanding cellular functions and disease mechanisms.
  • Magnetic nanoparticle-based fractionation offers efficient, pure lysosome isolation while preserving structure.
  • Tracking magnetic probes is key to optimizing lysosome isolation timing, but traditional probes have limitations.

Purpose of the Study:

  • To develop a novel protocol for lysosome isolation using magnetic-plasmonic nanoparticles (MPNPs).
  • To overcome limitations of traditional magnetic probes, such as superparamagnetic iron oxide nanoparticles (SPIONs).
  • To enable efficient and intact lysosome isolation from adherent cell lines.

Main Methods:

  • Utilizing MPNPs with intrinsic imaging capabilities to track intracellular trafficking.
  • Employing a magnetic column for rapid lysosome isolation post-trafficking.
  • Applying the protocol to various adherent cell lines.

Main Results:

  • MPNPs allow for intrinsic imaging of intracellular trafficking, eliminating the need for external fluorescent dyes.
  • The protocol facilitates quick isolation of intact lysosomes.
  • The method is adaptable to different adherent cell lines.

Conclusions:

  • The developed MPNP-based protocol offers an improved method for lysosome isolation.
  • This technique enhances the study of lysosome function and disease association.
  • The protocol provides a versatile tool for cell biology research.