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"Programmed packaging" for gene delivery.

M Hyodo1, Y Sakurai1, H Akita1

  • 1Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.

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|May 1, 2014
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Summary
This summary is machine-generated.

We developed multifunctional envelope-type nano devices (MENDs) using "Programmed packaging" to precisely control the delivery of nucleic acids, proteins, and peptides within cells and throughout the body. This technology enhances targeted delivery for applications like cancer therapy and DNA vaccines.

Keywords:
Active targetingDrug delivery systemGene therapyMENDpDNAsiRNA

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Molecular Biology

Background:

  • Controlling intracellular trafficking and biodistribution of therapeutic compounds is crucial for drug delivery.
  • Existing methods often lack specificity and efficiency in targeting specific cells or tissues.
  • Novel nanocarrier systems are needed to overcome these limitations.

Purpose of the Study:

  • To introduce the concept of "Programmed packaging" using multifunctional envelope-type nano devices (MENDs).
  • To demonstrate the capability of MENDs in controlling intracellular trafficking and biodistribution.
  • To showcase successful applications of MENDs in targeted drug delivery.

Main Methods:

  • Development of MENDs based on the "Programmed packaging" concept.
  • Utilizing molecular mechanisms of cell biology, including endocytosis and vesicular trafficking.
  • Application of Systematic Evolution of Ligands by Exponential Enrichment (SELEX) for ligand identification.
  • Design and optimization of pH-sensitive lipids (YSK05) and ss-cleavable, pH-activated lipid-like surfactants (ssPalm).

Main Results:

  • MENDs demonstrated control over intracellular trafficking and biodistribution of encapsulated nucleic acids, proteins, and peptides.
  • Successful delivery of siRNA to tumors and tumor vasculature using pH-sensitive lipid YSK05.
  • Efficient delivery of pDNA to immune cells like dendritic cells using the KALA ligand, showing potential for DNA vaccines.
  • Introduction of ssPalm as a novel lipid-like material with pH-activatable and SS-cleavable properties.

Conclusions:

  • "Programmed packaging" with MENDs offers a versatile strategy for precise control over drug delivery.
  • MENDs show significant potential for advancing targeted therapies, including cancer treatment and vaccine development.
  • The developed MEND system and materials represent a breakthrough in nanomedicine for intracellular and in vivo delivery.