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In Vesiculo Synthesis of Peptide Membrane Precursors for Autonomous Vesicle Growth
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Macrocyclic peptides self-assemble into robust vesicles with molecular recognition capabilities.

Woo-jin Jeong1, Yong-beom Lim

  • 1Translational Research Center for Protein Function Control and Department of Materials Science & Engineering, Yonsei University , Seoul 120-749, Korea.

Bioconjugate Chemistry
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New peptide building blocks form stable, small vesicles for drug delivery. These self-assembled peptide vesicles offer efficient cellular uptake and molecular recognition for targeted intracellular delivery.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Molecular Biology

Background:

  • Conventional amphiphiles face limitations in forming stable vesicles at high hydrophilic ratios.
  • Developing novel self-assembling systems is crucial for advanced drug delivery applications.

Purpose of the Study:

  • To engineer macrocyclic peptide building blocks for self-assembled peptide vesicles.
  • To investigate the formation, properties, and delivery capabilities of these novel peptide vesicles.

Main Methods:

  • Synthesis of macrocyclic peptide building blocks with flexible hydrophobic segments.
  • Characterization of self-assembled peptide vesicle formation, size, stability, and drug encapsulation.
  • In vitro studies on drug release kinetics, cellular internalization, and RNA molecular recognition.

Main Results:

  • Peptide vesicles formed at high hydrophilic-to-total mass ratios, differing from conventional amphiphiles.
  • Vesicles exhibited homogeneous size distribution, small size, and robust structural/thermal stability.
  • Efficient drug entrapment and slow release, high cellular uptake, and selective RNA binding were demonstrated.

Conclusions:

  • Flexible macrocyclic peptides are effective building blocks for self-assembled peptide vesicles.
  • These peptide vesicles show promise as stable, efficient intracellular delivery vehicles with molecular recognition.
  • The system offers a novel platform for targeted delivery of therapeutics and biomacromolecules.