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Related Experiment Videos

Nanodisks derived from amphotericin B lipid complex.

Megan Tufteland1, Gang Ren, Robert O Ryan

  • 1Center for Prevention of Obesity, Diabetes & Cardiovascular Diseases, Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, California 94609, USA.

Journal of Pharmaceutical Sciences
|February 14, 2008
PubMed
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Apolipoprotein A-I transforms Amphotericin B lipid complex (ABLC) into nanoscale disk-shaped complexes (nanodisks). This formulation preserves antifungal activity and reduces toxicity, improving stability and nebulization.

Area of Science:

  • Lipid-based drug delivery systems
  • Antifungal formulations
  • Nanotechnology in medicine

Background:

  • Amphotericin B lipid complex (ABLC) is a lipid formulation of Amphotericin B used for fungal infections.
  • Improving the stability, delivery, and safety profile of antifungal drugs is crucial.
  • Apolipoproteins are proteins that bind lipids and play roles in their transport and metabolism.

Purpose of the Study:

  • To investigate the effect of apolipoproteins on Amphotericin B lipid complex (ABLC).
  • To characterize the resulting nanostructure and its impact on Amphotericin B (AMB) properties.
  • To evaluate the biological activity and toxicity of the modified formulation.

Main Methods:

  • Incubation of ABLC with recombinant human apolipoprotein A-I (apoA-I).

Related Experiment Videos

  • Spectroscopy and electron microscopy to analyze changes in solubility and morphology.
  • Fungal growth inhibition assays and cell toxicity assessments (Hep3B cells).

    • Main Results:

    • ApoA-I induced solubilization of ABLC, forming nanoscale disk-shaped complexes (nanodisks, ND).
    • AMB-associated nanodisks showed enhanced nebulization efficiency compared to ABLC.
    • The nanodisk formulation retained the potent biological activity and reduced toxicity of ABLC.

    Conclusions:

    • Transformation of ABLC into AMB-ND preserves AMB's efficacy and reduces cell toxicity.
    • AMB-ND offer improved stability, storage, and nebulization efficiency over conventional ABLC.
    • The protein component of AMB-ND allows for potential tissue-specific targeting through genetic engineering.