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Strategy for Cytoplasmic Delivery Using Inorganic Particles.

Zhi Ping Gordon Xu1

  • 1Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, 4072, Australia. gordonxu@uq.edu.au.

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|February 3, 2022
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Summary

Inorganic nanoparticles enhance cellular uptake by facilitating endosome escape, a crucial step for delivering therapeutics like nucleic acids. Their unique properties, such as anti-acidification, enable novel delivery mechanisms.

Keywords:
anti-acidificationcellular deliveryendosome escapelysosome escapenorganic nanomaterials

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Endosome escape is vital for intracellular delivery of biomolecules and therapeutics.
  • Lysosome escape is a common endocytosis pathway, but enhanced endosome escape is desirable.
  • Inorganic materials, particularly nanomaterials, show promise in facilitating endosome escape.

Purpose of the Study:

  • To review strategies for designing inorganic nanoparticle-based delivery vehicles with endosome escapability.
  • To discuss mechanisms by which inorganic nanomaterials enhance endosome escape.
  • To provide a summary and future outlook for inorganic nanomaterials in drug delivery.

Main Methods:

  • Literature review of inorganic nanoparticle design for cellular delivery.
  • Analysis of mechanisms like salt osmotic effect and gas blast effect.
  • Discussion of specific inorganic nanomaterials used in delivery systems.

Main Results:

  • Inorganic nanomaterials exhibit unique mechanisms for endosome escape, including osmotic and gas effects.
  • Weakly alkaline properties and anti-acidification capacity are key features of these nanomaterials.
  • Several inorganic nanomaterials are actively researched for their delivery potential.

Conclusions:

  • Inorganic nanoparticles offer effective strategies for enhancing endosome escape.
  • Their properties allow for improved intracellular delivery of therapeutics.
  • Further research into inorganic nanomaterials holds significant promise for advanced drug delivery systems.