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Silica Gel Column Chromatography: Overview01:10

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Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
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Related Experiment Video

Updated: Feb 3, 2026

Encapsulating Cytochrome c in Silica Aerogel Nanoarchitectures without Metal Nanoparticles while Retaining Gas-phase Bioactivity
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Silica-Based Nanoparticles for Protein Encapsulation and Delivery.

Filippo Begarani1,2, Domenico Cassano3,4, Eleonora Margheritis5

  • 1NEST-Scuola Normale Superiore, Pisa 56100, Italy. filippo.begarani@sns.it.

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|November 4, 2018
PubMed
Summary

This study presents a novel nanoparticle system for effective protein delivery, overcoming limitations in protein stability and ensuring targeted release. The developed silica-shielded liposomes offer a promising platform for therapeutic protein applications.

Keywords:
Lysosomal Storage Disorders (LSDs)biodegradationliposomesprotein-deliverysilica

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Drug Delivery Systems

Background:

  • Effective therapeutic protein delivery remains challenging due to protein instability during transport.
  • Existing nanoparticle synthesis methods can harm protein structure and function.
  • Optimizing nanoparticle biocompatibility and controlled degradation is crucial for protein release.

Purpose of the Study:

  • To develop a nanoparticle system that protects protein integrity during synthesis and delivery.
  • To create a biocompatible and degradable nanoparticle for triggered protein release.
  • To demonstrate the potential of silica-shielded liposomes for efficient protein delivery.

Main Methods:

  • Synthesized silica-shielded liposomes using mild, aqueous conditions.
  • Loaded liposomes with Green Fluorescent Protein (GFP) as a model therapeutic protein.
  • Evaluated protein encapsulation efficiency, protection during intracellular trafficking, and release kinetics in acidic environments.

Main Results:

  • Successfully encapsulated and protected Green Fluorescent Protein within silica-shielded liposomes.
  • Demonstrated that the nanoparticles protect the protein during simulated intracellular transport.
  • Showcased triggered protein release upon nanoparticle degradation in acidic organelles.

Conclusions:

  • Silica-shielded liposomes provide a viable strategy for preserving protein physicochemical identity.
  • This nanoparticle system facilitates targeted and efficient protein delivery.
  • The proof-of-principle study opens avenues for advanced therapeutic protein applications.