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Formulation and Characterization of Bioactive Agent Containing Nanodisks
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Formulation and Characterization of Bioactive Agent Containing Nanodisks.

Kyle Lethcoe1, Colin A Fox1, Isabel Moh1

  • 1Department of Biochemistry and Molecular Biology, University of Nevada.

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Nanodisks, disk-shaped nanoparticles, efficiently solubilize hydrophobic drugs like amphotericin B. This formulation method enables versatile in vitro and in vivo applications for drug delivery.

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Drug Delivery

Background:

  • Nanodisks are discrete nanoparticles composed of lipids, scaffold proteins, and bioactive agents.
  • They are disk-shaped, with a lipid bilayer enclosed by a scaffold protein, typically an apolipoprotein.
  • Hydrophobic drugs can be integrated into the lipid bilayer, forming homogeneous particles of 10-20 nm.

Purpose of the Study:

  • To describe a general methodology for formulating and characterizing nanodisks.
  • To demonstrate the formulation of nanodisks containing the hydrophobic antibiotic amphotericin B.
  • To highlight the potential of nanodisk technology for drug delivery applications.

Main Methods:

  • Formulation involves precise component ratios, sequential addition, and bath sonication.
  • Scaffold proteins spontaneously organize lipids and drugs into homogeneous nanodisks.
  • Characterization includes solubilization efficiency, electron microscopy, spectroscopy, and biological activity assays.

Main Results:

  • The formulation process transitions the mixture from turbid to clear, yielding a stable nanodisk population.
  • Nanodisks effectively solubilize hydrophobic agents like amphotericin B.
  • Characterization confirmed particle homogeneity and size (10-20 nm).

Conclusions:

  • Nanodisk technology offers a versatile platform for formulating hydrophobic drugs.
  • The described methodology facilitates the creation of stable, aqueous-soluble nanodisks.
  • Nanodisks have broad potential for in vitro and in vivo applications, particularly in drug delivery.